Re: [PATCH v1 2/6] Extract ix86 dllimport implementation to mingw

[Evgeny Karpov]

Thursday, May 23, 2024 10:35 AM
Uros Bizjak  wrote:

> Richard Sandiford  wrote:
> >
> > > This looks good to me apart from a couple of very minor comments
> > > below, but please get approval from the x86 maintainers as well.  In
> > > particular, they might prefer to handle ix86_legitimize_pe_coff_symbol in
> some other way.
> >
> > Jan and Uros, could you please review x86 refactoring for mingw part?
> 
> Yes, perhaps legitimize_pe_coff_symbol should be handled similar to how
> machopic_legitimize_pic_address is handled.and just use "#if TARGET_PECOFF"
> at call sites when calling functions from the new winnt-dll.h. This would also
> allow us to remove  the early check for !TARGET_PECOFF in
> legitimize_pe_coff_symbol.
> 
> Uros.


The function legitimize_pe_coff_symbol is now part of mingw and will not be 
used for linux targets. 
This is why ix86_legitimize_pe_coff_symbol has been introduced, to be available 
for all platforms.

Regards,
Evgeny

Re: [PATCH v1 2/6] Extract ix86 dllimport implementation to mingw

[Evgeny Karpov]

Wednesday, May 22, 2024 1:06 PM
Richard Sandiford  wrote:

> This looks good to me apart from a couple of very minor comments below, but
> please get approval from the x86 maintainers as well.  In particular, they 
> might
> prefer to handle ix86_legitimize_pe_coff_symbol in some other way.

Thanks, Richard, for the review!
The suggestions will be addressed in the next version.

Jan and Uros, could you please review x86 refactoring for mingw part? Thanks.

Regards,
Evgeny

[COMMITTED] Regenerate cygming.opt.urls and mingw.opt.urls

[Evgeny Karpov]

Monday, May 13, 2024 3:49 PM wrote:
David Malcolm  wrote:

> >
> > It might be a "make" dependencies issue:
> > "make regenerate-opt-urls" has dependencies on OPT_URLS_HTML_DEPS
> > which is currently defined as:
> > OPT_URLS_HTML_DEPS = $(build_htmldir)/gcc/Option-Index.html \
> > $(build_htmldir)/gdc/Option-Index.html \
> > $(build_htmldir)/gfortran/Option-Index.html
> > which might not be enough for the doc changes when moving things
> > around that affect other generated html files.
> >
> > So when the CI runs "make regenerate-opt-urls" in a pristine build it
> > will forcibly rerun texinfo to regenerate the docs first, whereas if
> > you manually run the script in a build directory, you might not be
> > seeing the latest version of the HTML (especially in thre presence of
> > file moves).
> >
> > So I think the Makefile as currently written handles most cases, but
> > can get it slightly wrong for the case you ran into here (sorry);
> > fully refreshing the built docs ought to fix such cases.
> 
> Specifically, if you have some generated .html files in the
> $(build_htmldir) from a file that has gone away (due to a move), then I 
> suspect
> these .html files stick around until you fully delete the $(build_htmldir), 
> and in
> the meantime they get found by regenerate-opt- urls.py and lead to duplicate
> enries, leading to differences against a pristine build dir.
> 
> Dave

Thank you, Mark and Dave, for clarifying why the patch series
encountered this issue! The relocation of opt.urls files and
the use of "make regenerate-opt-urls" instead of running the 
script might explain why resolving duplicates for mthreads
has not been triggered earlier.

Regards,
Evgeny

RE: [EXTERNAL] [COMMITTED] Regenerate cygming.opt.urls and mingw.opt.urls

[Evgeny Karpov]

Sunday, May 12, 2024
Mark Wielaard  wrote:

> The new cygming.opt.urls and mingw.opt.urls in the
> gcc/config/mingw/cygming.opt.urls directory need to generated by make
> regenerate-opt-urls in the gcc subdirectory. They still contained references 
> to
> the gcc/config/i386 directory from which they were copied.
> 
> Fixes: 1f05dfc131c7 ("Reuse MinGW from i386 for AArch64")
> Fixes: e8d003736e6c ("Rename "x86 Windows Options" to "Cygwin and
> MinGW Options"")
> 
> gcc/ChangeLog:
> 
>   * config/mingw/cygming.opt.urls: Regenerate.
>   * config/mingw/mingw.opt.urls: Likewise.
> ---

Hello Mark, 
Thank you for reviewing our changes related to the refactoring of extracting 
the MinGW implementation from ix64. 

It was expected to move the MinGW-related files without changes in this commit 
("Reuse MinGW from i386 for AArch64") and apply the renaming in a follow-up 
commit, which has been done in 'Rename "x86 Windows Options" to "Cygwin and 
MinGW Options"'. 

The script to update opt.urls files has been used.

>  gcc/config/mingw/cygming.opt.urls | 7 +++
>  gcc/config/mingw/mingw.opt.urls   | 2 +-
>  2 files changed, 4 insertions(+), 5 deletions(-)
> 
> diff --git a/gcc/config/mingw/cygming.opt.urls
> b/gcc/config/mingw/cygming.opt.urls
> index c624e22e4427..af11c4997609 100644
> --- a/gcc/config/mingw/cygming.opt.urls
> +++ b/gcc/config/mingw/cygming.opt.urls
> @@ -1,4 +1,4 @@

> -; Autogenerated by regenerate-opt-urls.py from gcc/config/i386/cygming.opt
> and generated HTML
> +; Autogenerated by regenerate-opt-urls.py from
> +gcc/config/mingw/cygming.opt and generated HTML

I am not sure why this comment has not been updated. Is it critical or it could 
be updated next time when it is needed?

>
>  mconsole
>  UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mconsole)
> @@ -9,9 +9,8 @@ UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-
> mdll)
>  mnop-fun-dllimport
>  UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mnop-fun-dllimport)
> 
> -; skipping UrlSuffix for 'mthreads' due to multiple URLs:
> -;   duplicate: 'gcc/Cygwin-and-MinGW-Options.html#index-mthreads-1'
> -;   duplicate: 'gcc/x86-Options.html#index-mthreads'
> +mthreads
> +UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mthreads-1)

mthreads has the same issue before applying changes. Has something been changed 
recently?
This is the change in patch series in 'Rename "x86 Windows Options" to "Cygwin 
and MinGW Options"' commit.

; skipping UrlSuffix for 'mthreads' due to multiple URLs:
+;   duplicate: 'gcc/Cygwin-and-MinGW-Options.html#index-mthreads-1'
 ;   duplicate: 'gcc/x86-Options.html#index-mthreads'
-;   duplicate: 'gcc/x86-Windows-Options.html#index-mthreads-1'

Regards,
Evgeny

>  mwin32
>  UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mwin32)
> diff --git a/gcc/config/mingw/mingw.opt.urls
> b/gcc/config/mingw/mingw.opt.urls index f8ee5be6a535..40fb086606b2
> 100644

> --- a/gcc/config/mingw/mingw.opt.urls
> +++ b/gcc/config/mingw/mingw.opt.urls
> @@ -1,4 +1,4 @@
> -; Autogenerated by regenerate-opt-urls.py from gcc/config/i386/mingw.opt
> and generated HTML
> +; Autogenerated by regenerate-opt-urls.py from
> +gcc/config/mingw/mingw.opt and generated HTML
> 
>  mcrtdll=
>  UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mcrtdll)
> --
> 2.39.3

[PATCH v1 6/6] aarch64: Add DLL import/export to AArch64 target

[Evgeny Karpov]

This patch reuses the MinGW implementation to enable DLL import/export
functionality for the aarch64-w64-mingw32 target. It also modifies
environment configurations for MinGW.

gcc/ChangeLog:

* config.gcc: Add winnt-dll.o, which contains the DLL
import/export implementation.
* config/aarch64/aarch64-protos.h (legitimize_pe_coff_symbol):
Declare a MinGW function for expanding a symbol for COFF.
* config/aarch64/aarch64.cc (aarch64_legitimize_pe_coff_symbol):
Add a conditional function that reuses the MinGW implementation
for COFF and does nothing otherwise.
(aarch64_load_symref_appropriately): Add dllimport
implementation.
(aarch64_expand_call): Likewise.
(aarch64_legitimize_address): Likewise.
* config/aarch64/cygming.h (SYMBOL_FLAG_DLLIMPORT): Modify MinGW
environment to support DLL import/export.
(SYMBOL_FLAG_DLLEXPORT): Likewise.
(SYMBOL_REF_DLLIMPORT_P): Likewise.
(SYMBOL_FLAG_STUBVAR): Likewise.
(SYMBOL_REF_STUBVAR_P): Likewise.
(mingw_pe_valid_dllimport_attribute_p): Likewise.
(mingw_pe_file_end): Likewise.
(mingw_pe_record_stub): Likewise.
(TARGET_VALID_DLLIMPORT_ATTRIBUTE_P): Likewise.
(TARGET_ASM_FILE_END): Likewise.
(SUB_TARGET_RECORD_STUB): Likewise.
---
 gcc/config.gcc  |  2 +-
 gcc/config/aarch64/aarch64-protos.h |  1 +
 gcc/config/aarch64/aarch64.cc   | 37 +
 gcc/config/aarch64/cygming.h| 19 +--
 4 files changed, 56 insertions(+), 3 deletions(-)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index be2b20a155c..dce3a422daf 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1280,7 +1280,7 @@ aarch64-*-mingw*)
tmake_file="${tmake_file} aarch64/t-aarch64"
target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt.cc"
extra_options="${extra_options} mingw/cygming.opt mingw/mingw.opt"
-   extra_objs="${extra_objs} winnt.o"
+   extra_objs="${extra_objs} winnt.o winnt-dll.o"
c_target_objs="${c_target_objs} msformat-c.o"
d_target_objs="${d_target_objs} winnt-d.o"
tmake_file="${tmake_file} mingw/t-cygming"
diff --git a/gcc/config/aarch64/aarch64-protos.h 
b/gcc/config/aarch64/aarch64-protos.h
index 95972556c56..996acb60d61 100644
--- a/gcc/config/aarch64/aarch64-protos.h
+++ b/gcc/config/aarch64/aarch64-protos.h
@@ -25,6 +25,7 @@
 #include "input.h"
 #include "config/arm/aarch-common.h"
 #include "config/mingw/winnt.h"
+#include "config/mingw/winnt-dll.h"
 
 /* SYMBOL_SMALL_ABSOLUTE: Generate symbol accesses through
high and lo relocs that calculate the base address using a PC
diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index 19205927430..7e28b5f0c08 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -856,6 +856,10 @@ static const attribute_spec aarch64_gnu_attributes[] =
   { "Advanced SIMD type", 1, 1, false, true,  false, true,  NULL, NULL },
   { "SVE type",  3, 3, false, true,  false, true,  NULL, NULL 
},
   { "SVE sizeless type",  0, 0, false, true,  false, true,  NULL, NULL },
+#if TARGET_DLLIMPORT_DECL_ATTRIBUTES
+  { "dllimport", 0, 0, false, false, false, false, handle_dll_attribute, NULL 
},
+  { "dllexport", 0, 0, false, false, false, false, handle_dll_attribute, NULL 
},
+#endif
 #ifdef SUBTARGET_ATTRIBUTE_TABLE
   SUBTARGET_ATTRIBUTE_TABLE
 #endif
@@ -2815,6 +2819,15 @@ tls_symbolic_operand_type (rtx addr)
   return tls_kind;
 }
 
+rtx aarch64_legitimize_pe_coff_symbol (rtx addr, bool inreg)
+{
+#if TARGET_PECOFF
+  return legitimize_pe_coff_symbol (addr, inreg);
+#else
+  return NULL_RTX;
+#endif
+}
+
 /* We'll allow lo_sum's in addresses in our legitimate addresses
so that combine would take care of combining addresses where
necessary, but for generation purposes, we'll generate the address
@@ -2861,6 +2874,17 @@ static void
 aarch64_load_symref_appropriately (rtx dest, rtx imm,
   enum aarch64_symbol_type type)
 {
+  /* If legitimize returns a value
+ copy it directly to the destination and return.  */
+
+  rtx tmp = aarch64_legitimize_pe_coff_symbol (imm, true);
+
+  if (tmp)
+{
+   emit_insn (gen_rtx_SET (dest, tmp));
+   return;
+}
+
   switch (type)
 {
 case SYMBOL_SMALL_ABSOLUTE:
@@ -11231,6 +11255,12 @@ aarch64_expand_call (rtx result, rtx mem, rtx cookie, 
bool sibcall)
 
   gcc_assert (MEM_P (mem));
   callee = XEXP (mem, 0);
+
+  tmp = aarch64_legitimize_pe_coff_symbol (callee, false);
+
+  if (tmp)
+callee = tmp;
+
   mode = GET_MODE (callee);
   gcc_assert (mode == Pmode);
 
@@ -12707,6 +12737,13 @@ aarch64_anchor_offset (HOST_WIDE_INT offset, 
HOST_WIDE_INT size,
 static rtx
 aarch64_legitimize_address (rtx x, rtx /* orig_x  */, machine_mode mode)
 {
+  if (TARGET_DLLIMPORT_DECL_ATTRIBUTES)
+{
+  rtx 

[PATCH v1 5/6] Adjust DLL import/export implementation for AArch64

[Evgeny Karpov]

The DLL import/export mingw implementation, originally from ix86, requires
minor adjustments to be compatible with AArch64.

gcc/ChangeLog:

* config/mingw/mingw32.h (defined): Use the correct DllMainCRTStartup
entry function.
* config/mingw/winnt-dll.cc (defined): Exclude ix86-related code.
---
 gcc/config/mingw/mingw32.h| 2 +-
 gcc/config/mingw/winnt-dll.cc | 4 
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/gcc/config/mingw/mingw32.h b/gcc/config/mingw/mingw32.h
index 08f1b5f0696..efe777051b4 100644
--- a/gcc/config/mingw/mingw32.h
+++ b/gcc/config/mingw/mingw32.h
@@ -79,7 +79,7 @@ along with GCC; see the file COPYING3.  If not see
 #endif
 
 #undef SUB_LINK_ENTRY
-#if TARGET_64BIT_DEFAULT
+#if TARGET_64BIT_DEFAULT || defined (TARGET_AARCH64_MS_ABI)
 #define SUB_LINK_ENTRY SUB_LINK_ENTRY64
 #else
 #define SUB_LINK_ENTRY SUB_LINK_ENTRY32
diff --git a/gcc/config/mingw/winnt-dll.cc b/gcc/config/mingw/winnt-dll.cc
index 349ade6f5c0..294361fab4c 100644
--- a/gcc/config/mingw/winnt-dll.cc
+++ b/gcc/config/mingw/winnt-dll.cc
@@ -206,9 +206,13 @@ legitimize_pe_coff_symbol (rtx addr, bool inreg)
}
 }
 
+#if !defined (TARGET_AARCH64_MS_ABI)
+
   if (ix86_cmodel != CM_LARGE_PIC && ix86_cmodel != CM_MEDIUM_PIC)
 return NULL_RTX;
 
+#endif
+
   if (GET_CODE (addr) == SYMBOL_REF
   && !is_imported_p (addr)
   && SYMBOL_REF_EXTERNAL_P (addr)
-- 
2.25.1

[PATCH v1 4/6] aarch64: Add selectany attribute handling

[Evgeny Karpov]

This patch extends the aarch64 attributes list with the selectany
attribute for the aarch64-w64-mingw32 target and reuses the mingw
implementation to handle it.

* config/aarch64/aarch64.cc:
Extend the aarch64 attributes list.
* config/aarch64/cygming.h (SUBTARGET_ATTRIBUTE_TABLE):
Define the selectany attribute.
---
 gcc/config/aarch64/aarch64.cc | 5 -
 gcc/config/aarch64/cygming.h  | 3 +++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index c763a8a6298..19205927430 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -855,7 +855,10 @@ static const attribute_spec aarch64_gnu_attributes[] =
  NULL },
   { "Advanced SIMD type", 1, 1, false, true,  false, true,  NULL, NULL },
   { "SVE type",  3, 3, false, true,  false, true,  NULL, NULL 
},
-  { "SVE sizeless type",  0, 0, false, true,  false, true,  NULL, NULL }
+  { "SVE sizeless type",  0, 0, false, true,  false, true,  NULL, NULL },
+#ifdef SUBTARGET_ATTRIBUTE_TABLE
+  SUBTARGET_ATTRIBUTE_TABLE
+#endif
 };
 
 static const scoped_attribute_specs aarch64_gnu_attribute_table =
diff --git a/gcc/config/aarch64/cygming.h b/gcc/config/aarch64/cygming.h
index 0d048879311..76623153080 100644
--- a/gcc/config/aarch64/cygming.h
+++ b/gcc/config/aarch64/cygming.h
@@ -154,6 +154,9 @@ still needed for compilation.  */
 flag_stack_check = STATIC_BUILTIN_STACK_CHECK; \
   } while (0)
 
+#define SUBTARGET_ATTRIBUTE_TABLE \
+  { "selectany", 0, 0, true, false, false, false, \
+mingw_handle_selectany_attribute, NULL }
 
 #define SUPPORTS_ONE_ONLY 1
 
-- 
2.25.1

[PATCH v1 3/6] Rename functions for reuse in AArch64

[Evgeny Karpov]

This patch renames functions related to dllimport/dllexport
and selectany functionality. These functions will be reused
in the aarch64-w64-mingw32 target.

gcc/ChangeLog:

* config/i386/cygming.h (mingw_pe_record_stub):
Rename functions in mingw folder which will be reused for
aarch64.
(TARGET_ASM_FILE_END): Update to new target-independent name.
(SUBTARGET_ATTRIBUTE_TABLE): Likewise.
(TARGET_VALID_DLLIMPORT_ATTRIBUTE_P): Likewise.
(SUB_TARGET_RECORD_STUB): Likewise.
* config/i386/i386-protos.h (ix86_handle_selectany_attribute): Likewise.
(mingw_handle_selectany_attribute): Likewise.
(i386_pe_valid_dllimport_attribute_p): Likewise.
(mingw_pe_valid_dllimport_attribute_p): Likewise.
(i386_pe_file_end): Likewise.
(mingw_pe_file_end): Likewise.
(i386_pe_record_stub): Likewise.
(mingw_pe_record_stub): Likewise.
* config/mingw/winnt.cc (ix86_handle_selectany_attribute): Likewise.
(mingw_handle_selectany_attribute): Likewise.
(i386_pe_valid_dllimport_attribute_p): Likewise.
(mingw_pe_valid_dllimport_attribute_p): Likewise.
(i386_pe_record_stub): Likewise.
(mingw_pe_record_stub): Likewise.
(i386_pe_file_end): Likewise.
(mingw_pe_file_end): Likewise.
* config/mingw/winnt.h (mingw_handle_selectany_attribute):
Declate functionality that will be reused by multiple targets.
(mingw_pe_file_end): Likewise.
(mingw_pe_record_stub): Likewise.
(mingw_pe_valid_dllimport_attribute_p): Likewise.
---
 gcc/config/i386/cygming.h | 6 +++---
 gcc/config/i386/i386-protos.h | 3 ---
 gcc/config/mingw/winnt.cc | 6 +++---
 gcc/config/mingw/winnt.h  | 6 +-
 4 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/gcc/config/i386/cygming.h b/gcc/config/i386/cygming.h
index 4110ceab824..061136efa0a 100644
--- a/gcc/config/i386/cygming.h
+++ b/gcc/config/i386/cygming.h
@@ -342,7 +342,7 @@ do {\
 
 /* Output function declarations at the end of the file.  */
 #undef TARGET_ASM_FILE_END
-#define TARGET_ASM_FILE_END i386_pe_file_end
+#define TARGET_ASM_FILE_END mingw_pe_file_end
 
 /* Kludge because of missing PE-COFF support for early LTO debug.  */
 #undef  TARGET_ASM_LTO_START
@@ -443,7 +443,7 @@ do {\
 
 #define SUBTARGET_ATTRIBUTE_TABLE \
   { "selectany", 0, 0, true, false, false, false, \
-ix86_handle_selectany_attribute, NULL }
+mingw_handle_selectany_attribute, NULL }
   /* { name, min_len, max_len, decl_req, type_req, fn_type_req,
affects_type_identity, handler, exclude } */
 
@@ -451,7 +451,7 @@ do {\
 #undef NO_PROFILE_COUNTERS
 #define NO_PROFILE_COUNTERS 1
 
-#define TARGET_VALID_DLLIMPORT_ATTRIBUTE_P i386_pe_valid_dllimport_attribute_p
+#define TARGET_VALID_DLLIMPORT_ATTRIBUTE_P mingw_pe_valid_dllimport_attribute_p
 #define TARGET_CXX_ADJUST_CLASS_AT_DEFINITION 
i386_pe_adjust_class_at_definition
 #define SUBTARGET_MANGLE_DECL_ASSEMBLER_NAME i386_pe_mangle_decl_assembler_name
 
diff --git a/gcc/config/i386/i386-protos.h b/gcc/config/i386/i386-protos.h
index dbced12f8d4..4dc90179b9b 100644
--- a/gcc/config/i386/i386-protos.h
+++ b/gcc/config/i386/i386-protos.h
@@ -261,7 +261,6 @@ extern unsigned int ix86_local_alignment (tree, 
machine_mode,
 extern unsigned int ix86_minimum_alignment (tree, machine_mode,
unsigned int);
 extern tree ix86_handle_shared_attribute (tree *, tree, tree, int, bool *);
-extern tree ix86_handle_selectany_attribute (tree *, tree, tree, int, bool *);
 extern int x86_field_alignment (tree, int);
 extern tree ix86_valid_target_attribute_tree (tree, tree,
  struct gcc_options *,
@@ -301,12 +300,10 @@ extern void ix86_register_pragmas (void);
 extern void i386_pe_record_external_function (tree, const char *);
 extern bool i386_pe_binds_local_p (const_tree);
 extern const char *i386_pe_strip_name_encoding_full (const char *);
-extern bool i386_pe_valid_dllimport_attribute_p (const_tree);
 extern void i386_pe_asm_output_aligned_decl_common (FILE *, tree,
const char *,
HOST_WIDE_INT,
HOST_WIDE_INT);
-extern void i386_pe_file_end (void);
 extern void i386_pe_asm_lto_start (void);
 extern void i386_pe_asm_lto_end (void);
 extern void i386_pe_start_function (FILE *, const char *, tree);
diff --git a/gcc/config/mingw/winnt.cc b/gcc/config/mingw/winnt.cc
index 9901576ade0..a0b5950be2e 100644
--- a/gcc/config/mingw/winnt.cc
+++ b/gcc/config/mingw/winnt.cc
@@ -71,7 +71,7 @@ ix86_handle_shared_attribute (tree *node, tree name, tree, 
int,
 /* Handle a "selectany" attribute;

[PATCH v1 2/6] Extract ix86 dllimport implementation to mingw

[Evgeny Karpov]

This patch extracts the ix86 implementation for expanding a SYMBOL
into its corresponding dllimport, far-address, or refptr symbol.
It will be reused in the aarch64-w64-mingw32 target.
The implementation is copied as is from i386/i386.cc with
minor changes to follow to the code style.

Also this patch replaces the original DLL import/export
implementation in ix86 with mingw.

gcc/ChangeLog:

* config.gcc: Add winnt-dll.o, which contains the DLL
import/export implementation.
* config/i386/cygming.h (SUB_TARGET_RECORD_STUB): Remove the
old implementation. Rename the required function to MinGW.
Rename it to a conditional function that will reuse the
MinGW implementation for COFF and nothing otherwise.
* config/i386/i386-expand.cc (ix86_expand_move): Likewise.
* config/i386/i386-expand.h (is_imported_p): Likewise.
(mingw_GOT_alias_set): Likewise.
(ix86_legitimize_pe_coff_symbol): Likewise.
* config/i386/i386-protos.h: Likewise.
* config/i386/i386.cc (is_imported_p): Likewise.
(ix86_legitimize_pe_coff_symbol): Likewise.
(ix86_GOT_alias_set): Likewise.
(legitimize_pic_address): Likewise.
(struct dllimport_hasher):
(GTY): Likewise.
(get_dllimport_decl): Likewise.
(legitimize_pe_coff_extern_decl): Likewise.
(legitimize_dllimport_symbol): Likewise.
(legitimize_pe_coff_symbol): Likewise.
(ix86_legitimize_address): Likewise.
* config/mingw/winnt.h (mingw_pe_record_stub): Likewise.
* config/mingw/winnt.cc (i386_pe_record_stub): Likewise.
(mingw_pe_record_stub): Likewise.
* config/mingw/t-cygming: Add the winnt-dll.o compilation.
* config/mingw/winnt-dll.cc: New file.
---
 gcc/config.gcc |   6 +-
 gcc/config/i386/cygming.h  |   2 +-
 gcc/config/i386/i386-expand.cc |   2 +-
 gcc/config/i386/i386-expand.h  |   2 +-
 gcc/config/i386/i386-protos.h  |   2 +-
 gcc/config/i386/i386.cc| 211 --
 gcc/config/mingw/t-cygming |   6 +
 gcc/config/mingw/winnt-dll.cc  | 229 +
 gcc/config/mingw/winnt-dll.h   |  26 
 gcc/config/mingw/winnt.cc  |   2 +-
 gcc/config/mingw/winnt.h   |   1 +
 11 files changed, 292 insertions(+), 197 deletions(-)
 create mode 100644 gcc/config/mingw/winnt-dll.cc
 create mode 100644 gcc/config/mingw/winnt-dll.h

diff --git a/gcc/config.gcc b/gcc/config.gcc
index ef7f854735a..be2b20a155c 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -2181,7 +2181,7 @@ i[34567]86-*-cygwin*)
tmake_file="${tmake_file} mingw/t-cygming t-slibgcc"
target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt.cc"
extra_options="${extra_options} mingw/cygming.opt i386/cygwin.opt"
-   extra_objs="${extra_objs} winnt.o winnt-stubs.o"
+   extra_objs="${extra_objs} winnt.o winnt-stubs.o winnt-dll.o"
c_target_objs="${c_target_objs} msformat-c.o"
cxx_target_objs="${cxx_target_objs} winnt-cxx.o msformat-c.o"
d_target_objs="${d_target_objs} cygwin-d.o"
@@ -2199,7 +2199,7 @@ x86_64-*-cygwin*)
tmake_file="${tmake_file} mingw/t-cygming t-slibgcc"
target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt.cc"
extra_options="${extra_options} mingw/cygming.opt i386/cygwin.opt"
-   extra_objs="${extra_objs} winnt.o winnt-stubs.o"
+   extra_objs="${extra_objs} winnt.o winnt-stubs.o winnt-dll.o"
c_target_objs="${c_target_objs} msformat-c.o"
cxx_target_objs="${cxx_target_objs} winnt-cxx.o msformat-c.o"
d_target_objs="${d_target_objs} cygwin-d.o"
@@ -2283,7 +2283,7 @@ i[34567]86-*-mingw* | x86_64-*-mingw*)
*)
;;
esac
-   extra_objs="${extra_objs} winnt.o winnt-stubs.o"
+   extra_objs="${extra_objs} winnt.o winnt-stubs.o winnt-dll.o"
c_target_objs="${c_target_objs} msformat-c.o"
cxx_target_objs="${cxx_target_objs} winnt-cxx.o msformat-c.o"
gas=yes
diff --git a/gcc/config/i386/cygming.h b/gcc/config/i386/cygming.h
index beedf7c398a..4110ceab824 100644
--- a/gcc/config/i386/cygming.h
+++ b/gcc/config/i386/cygming.h
@@ -459,7 +459,7 @@ do {\
 #define TARGET_ASM_ASSEMBLE_VISIBILITY i386_pe_assemble_visibility
 
 #undef SUB_TARGET_RECORD_STUB
-#define SUB_TARGET_RECORD_STUB i386_pe_record_stub
+#define SUB_TARGET_RECORD_STUB mingw_pe_record_stub
 
 /* Static stack checking is supported by means of probes.  */
 #define STACK_CHECK_STATIC_BUILTIN 1
diff --git a/gcc/config/i386/i386-expand.cc b/gcc/config/i386/i386-expand.cc
index 8bb8f21e686..77bf4433aa8 100644
--- a/gcc/config/i386/i386-expand.cc
+++ b/gcc/config/i386/i386-expand.cc
@@ -412,7 +412,7 @@ ix86_expand_move (machine_mode mode, rtx operands[])
}
   else
{
- tmp = legitimize_pe_coff_symbol (op1, addend != 

[PATCH v1 1/6] Move mingw_* declarations to the mingw folder

[Evgeny Karpov]

This patch refactors recent changes to move mingw-related
functionality to the mingw folder. More renamings to the mingw_
prefix will be done in follow-up commits.

This is the first commit in the second patch series to add DLL
import/export implementation to AArch64.

Coauthors: Zac Walker ,
Mark Harmstone   and
Ron Riddle 

Refactored, prepared, and validated by
Radek Barton  and
Evgeny Karpov 

gcc/ChangeLog:

* config/aarch64/aarch64-protos.h
(mingw_pe_maybe_record_exported_symbol): Move mingw_*
declarations to mingw.
(mingw_pe_section_type_flags): Likewise.
(mingw_pe_unique_section): Likewise.
(mingw_pe_encode_section_info): Likewise.
* config/aarch64/cygming.h
(mingw_pe_asm_named_section): Likewise.
(mingw_pe_declare_function_type): Likewise.
* config/i386/i386-protos.h
(mingw_pe_unique_section): Likewise.
(mingw_pe_declare_function_type): Likewise.
(mingw_pe_maybe_record_exported_symbol): Likewise.
(mingw_pe_encode_section_info): Likewise.
(mingw_pe_section_type_flags): Likewise.
(mingw_pe_asm_named_section): Likewise.
* config/mingw/winnt.h: New file.
---
 gcc/config/aarch64/aarch64-protos.h |  6 +-
 gcc/config/aarch64/cygming.h|  4 
 gcc/config/i386/i386-protos.h   |  8 ++--
 gcc/config/mingw/winnt.h| 29 +
 4 files changed, 32 insertions(+), 15 deletions(-)
 create mode 100644 gcc/config/mingw/winnt.h

diff --git a/gcc/config/aarch64/aarch64-protos.h 
b/gcc/config/aarch64/aarch64-protos.h
index 1d3f94c813e..95972556c56 100644
--- a/gcc/config/aarch64/aarch64-protos.h
+++ b/gcc/config/aarch64/aarch64-protos.h
@@ -24,6 +24,7 @@
 
 #include "input.h"
 #include "config/arm/aarch-common.h"
+#include "config/mingw/winnt.h"
 
 /* SYMBOL_SMALL_ABSOLUTE: Generate symbol accesses through
high and lo relocs that calculate the base address using a PC
@@ -1110,11 +,6 @@ extern void aarch64_output_patchable_area (unsigned int, 
bool);
 
 extern void aarch64_adjust_reg_alloc_order ();
 
-extern void mingw_pe_maybe_record_exported_symbol (tree, const char *, int);
-extern unsigned int mingw_pe_section_type_flags (tree, const char *, int);
-extern void mingw_pe_unique_section (tree, int);
-extern void mingw_pe_encode_section_info (tree, rtx, int);
-
 bool aarch64_optimize_mode_switching (aarch64_mode_entity);
 void aarch64_restore_za (rtx);
 
diff --git a/gcc/config/aarch64/cygming.h b/gcc/config/aarch64/cygming.h
index 2e7b01feb76..0d048879311 100644
--- a/gcc/config/aarch64/cygming.h
+++ b/gcc/config/aarch64/cygming.h
@@ -51,10 +51,6 @@ still needed for compilation.  */
 #include 
 #endif
 
-extern void mingw_pe_asm_named_section (const char *, unsigned int, tree);
-extern void mingw_pe_declare_function_type (FILE *file, const char *name,
-   int pub);
-
 #define TARGET_ASM_NAMED_SECTION  mingw_pe_asm_named_section
 
 /* Select attributes for named sections.  */
diff --git a/gcc/config/i386/i386-protos.h b/gcc/config/i386/i386-protos.h
index dbc861fb1ea..96368521380 100644
--- a/gcc/config/i386/i386-protos.h
+++ b/gcc/config/i386/i386-protos.h
@@ -17,6 +17,8 @@ You should have received a copy of the GNU General Public 
License
 along with GCC; see the file COPYING3.  If not see
 <http://www.gnu.org/licenses/>.  */
 
+#include "config/mingw/winnt.h"
+
 /* In i386-common.cc.  */
 extern bool ix86_handle_option (struct gcc_options *opts,
struct gcc_options *opts_set ATTRIBUTE_UNUSED,
@@ -295,16 +297,10 @@ extern void ix86_target_macros (void);
 extern void ix86_register_pragmas (void);
 
 /* In winnt.cc  */
-extern void mingw_pe_unique_section (tree, int);
-extern void mingw_pe_declare_function_type (FILE *, const char *, int);
 extern void i386_pe_record_external_function (tree, const char *);
-extern void mingw_pe_maybe_record_exported_symbol (tree, const char *, int);
-extern void mingw_pe_encode_section_info (tree, rtx, int);
 extern bool i386_pe_binds_local_p (const_tree);
 extern const char *i386_pe_strip_name_encoding_full (const char *);
 extern bool i386_pe_valid_dllimport_attribute_p (const_tree);
-extern unsigned int mingw_pe_section_type_flags (tree, const char *, int);
-extern void mingw_pe_asm_named_section (const char *, unsigned int, tree);
 extern void i386_pe_asm_output_aligned_decl_common (FILE *, tree,
const char *,
HOST_WIDE_INT,
diff --git a/gcc/config/mingw/winnt.h b/gcc/config/mingw/winnt.h
new file mode 100644
index 000..da8445904ce
--- /dev/null
+++ b/gcc/config/mingw/winnt.h
@@ -0,0 +1,29 @@
+/* Subroutines for targets on Windows.
+Copyright (C) 2024 Free Software Foundation, Inc.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Pub

[PATCH v1 0/6] Add DLL import/export implementation to AArch64

[Evgeny Karpov]

Hello,

This is the second patch series, following the first patch series which
introduced the aarch64-w64-mingw32 target.
https://gcc.gnu.org/pipermail/gcc-patches/2024-February/thread.html#646203
https://gcc.gnu.org/pipermail/gcc-patches/2024-March/thread.html#647128
https://gcc.gnu.org/pipermail/gcc-patches/2024-April/thread.html#649261

The patch series aims at the goal:
Extend the aarch64-w64-mingw32 C implementation to
cross-compile OpenSSL, OpenBLAS, FFmpeg, and libjpeg-turbo. All
packages successfully pass tests.

The changes in this patch series are focused on reusing functionality
for DLL import/export from ix86 in aarch64. The ix86 implementation
for expanding a SYMBOL into its corresponding dllimport symbol has
been moved to the mingw folder. Functions related to
dllimport/dllexport functionality have been renamed for reuse in the
AArch64 target.

This patch series is implemented on top of the first patch series which
has not been merged yet. It is currently awaiting the opening of GCC Stage1.
https://gcc.gnu.org/pipermail/gcc-patches/2024-April/thread.html#649261

Patchwork cannot verify this patch series. However, a link to Linaro CI will
be provided once the testing is complete.
A minimal regression test for building main targets can be found here:
https://github.com/Windows-on-ARM-Experiments/mingw-woarm64-build/actions/runs/8739609732

Regression test for all languages on x86_86-w64-mingw32 is in progress and 
will be also provided.

Known issues:
In order to compile FFmpeg, the optimization level should be reduced
from -O3 to -O2. The fix for this issue is planned to be delivered
in the third patch series.

Thank you for your review!

Coauthors: Zac Walker ,
Mark Harmstone   and
Ron Riddle 

Refactored, prepared, and validated by
Radek Barton  and
Evgeny Karpov 

Regards,
Evgeny


Evgeny Karpov (6):
  Move mingw_* declarations to the mingw folder
  Extract ix86 dllimport implementation to mingw
  Rename functions for reuse in AArch64
  aarch64: Add selectany attribute handling
  Adjust DLL import/export implementation for AArch64
  aarch64: Add DLL import/export to AArch64 target

 gcc/config.gcc  |   8 +-
 gcc/config/aarch64/aarch64-protos.h |   7 +-
 gcc/config/aarch64/aarch64.cc   |  42 -
 gcc/config/aarch64/cygming.h|  26 +++-
 gcc/config/i386/cygming.h   |   8 +-
 gcc/config/i386/i386-expand.cc  |   2 +-
 gcc/config/i386/i386-expand.h   |   2 +-
 gcc/config/i386/i386-protos.h   |  13 +-
 gcc/config/i386/i386.cc | 211 +++--
 gcc/config/mingw/mingw32.h  |   2 +-
 gcc/config/mingw/t-cygming  |   6 +
 gcc/config/mingw/winnt-dll.cc   | 233 
 gcc/config/mingw/winnt-dll.h|  26 
 gcc/config/mingw/winnt.cc   |   8 +-
 gcc/config/mingw/winnt.h|  34 
 15 files changed, 402 insertions(+), 226 deletions(-)
 create mode 100644 gcc/config/mingw/winnt-dll.cc
 create mode 100644 gcc/config/mingw/winnt-dll.h
 create mode 100644 gcc/config/mingw/winnt.h

-- 
2.25.1

[PATCH v2 00/13] Add aarch64-w64-mingw32 target

[Evgeny Karpov]

Wednesday, April 10, 2024 8:40 PM
Richard Sandiford  wrote:

> Thanks for the updates and sorry again for the slow review.
> I've replied to some of the patches in the series but otherwise it looks good 
> to
> me.
> 
> If you agree with the suggested changes then the series is OK for stage 1,
> assuming no objections from those with an interest in the
> x86 cygwin/mingw port.
> 
> Richard

Thank you, Richard, for the review!
v3 addresses all comments on v2.
https://gcc.gnu.org/pipermail/gcc-patches/2024-April/thread.html#649261

Regards,
Evgeny

[PATCH v3 12/12] Add aarch64-w64-mingw32 target to libgcc

[Evgeny Karpov]

From: Zac Walker 
Date: Mon, 12 Feb 2024 15:22:47 +0100
Subject: [PATCH v3 12/12] Add aarch64-w64-mingw32 target to libgcc

Reuse MinGW definitions from i386 for libgcc. Move reused files to
libgcc/config/mingw folder.

libgcc/ChangeLog:

* config.host: Add aarch64-w64-mingw32 target. Adjust targets
after moving MinGW files.
* config/i386/t-gthr-win32: Move to...
* config/mingw/t-gthr-win32: ...here.
* config/i386/t-mingw-pthread: Move to...
* config/mingw/t-mingw-pthread: ...here.
* config/aarch64/t-no-eh: New file. EH is not yet implemented for
the target, and the default definition should be disabled.
---
 libgcc/config.host| 23 +++
 libgcc/config/aarch64/t-no-eh |  2 ++
 libgcc/config/{i386 => mingw}/t-gthr-win32|  0
 libgcc/config/{i386 => mingw}/t-mingw-pthread |  0
 4 files changed, 21 insertions(+), 4 deletions(-)
 create mode 100644 libgcc/config/aarch64/t-no-eh
 rename libgcc/config/{i386 => mingw}/t-gthr-win32 (100%)
 rename libgcc/config/{i386 => mingw}/t-mingw-pthread (100%)

diff --git a/libgcc/config.host b/libgcc/config.host
index e75a7af647f..0f853b7d02b 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -465,6 +465,21 @@ aarch64*-*-vxworks7*)
tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm"
tmake_file="${tmake_file} t-dfprules"
;;
+aarch64-*-mingw*)
+   case ${target_thread_file} in
+ win32)
+   tmake_thr_file="mingw/t-gthr-win32"
+   ;;
+ posix)
+   tmake_thr_file="mingw/t-mingw-pthread"
+   ;;
+   esac
+   tmake_file="${tmake_file} ${cpu_type}/t-no-eh ${tmake_thr_file}"
+   tmake_file="${tmake_file} t-dfprules"
+   tmake_file="${tmake_file} ${cpu_type}/t-aarch64"
+   tmake_file="${tmake_file} ${cpu_type}/t-lse"
+   tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm"
+   ;;
 alpha*-*-linux*)
tmake_file="${tmake_file} alpha/t-alpha alpha/t-ieee t-crtfm 
alpha/t-linux"
extra_parts="$extra_parts crtfastmath.o"
@@ -883,10 +898,10 @@ i[34567]86-*-mingw*)
fi
case ${target_thread_file} in
  win32)
-   tmake_thr_file="i386/t-gthr-win32"
+   tmake_thr_file="mingw/t-gthr-win32"
;;
  posix)
-   tmake_thr_file="i386/t-mingw-pthread"
+   tmake_thr_file="mingw/t-mingw-pthread"
;;
  mcf)
tmake_thr_file="i386/t-mingw-mcfgthread"
@@ -910,10 +925,10 @@ i[34567]86-*-mingw*)
 x86_64-*-mingw*)
case ${target_thread_file} in
  win32)
-   tmake_thr_file="i386/t-gthr-win32"
+   tmake_thr_file="mingw/t-gthr-win32"
;;
  posix)
-   tmake_thr_file="i386/t-mingw-pthread"
+   tmake_thr_file="mingw/t-mingw-pthread"
;;
  mcf)
tmake_thr_file="i386/t-mingw-mcfgthread"
diff --git a/libgcc/config/aarch64/t-no-eh b/libgcc/config/aarch64/t-no-eh
new file mode 100644
index 000..1802339a583
--- /dev/null
+++ b/libgcc/config/aarch64/t-no-eh
@@ -0,0 +1,2 @@
+# Not using EH
+LIB2ADDEH =
diff --git a/libgcc/config/i386/t-gthr-win32 b/libgcc/config/mingw/t-gthr-win32
similarity index 100%
rename from libgcc/config/i386/t-gthr-win32
rename to libgcc/config/mingw/t-gthr-win32
diff --git a/libgcc/config/i386/t-mingw-pthread 
b/libgcc/config/mingw/t-mingw-pthread
similarity index 100%
rename from libgcc/config/i386/t-mingw-pthread
rename to libgcc/config/mingw/t-mingw-pthread
-- 
2.25.1

[PATCH v3 11/12] aarch64: Add aarch64-w64-mingw32 target to libatomic

[Evgeny Karpov]

From: Zac Walker 
Date: Fri, 1 Mar 2024 02:23:45 +0100
Subject: [PATCH v3 11/12] aarch64: Add aarch64-w64-mingw32 target to libatomic

libatomic/ChangeLog:

* configure.tgt: Add aarch64-w64-mingw32 target.
---
 libatomic/configure.tgt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libatomic/configure.tgt b/libatomic/configure.tgt
index 4237f283fe4..e49fd57ab41 100644
--- a/libatomic/configure.tgt
+++ b/libatomic/configure.tgt
@@ -44,7 +44,7 @@ case "${target_cpu}" in
   aarch64*)
ARCH=aarch64
case "${target}" in
-   aarch64*-*-linux*)
+   aarch64*-*-linux* | aarch64-*-mingw*)
if test -n "$enable_aarch64_lse"; then
try_ifunc=yes
fi
-- 
2.25.1

[PATCH v3 10/12] aarch64: Build and add objects for Cygwin and MinGW for AArch64

[Evgeny Karpov]

From: Zac Walker 
Date: Tue, 20 Feb 2024 13:55:51 +0100
Subject: [PATCH v3 10/12] aarch64: Build and add objects for Cygwin and MinGW
 for AArch64

gcc/ChangeLog:

* config.gcc: Build and add objects for Cygwin and MinGW. Add Cygwin
and MinGW options to the target.
---
 gcc/config.gcc | 5 +
 1 file changed, 5 insertions(+)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index d2f92e0fc50..ef7f854735a 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1279,6 +1279,11 @@ aarch64-*-mingw*)
tm_file="${tm_file} mingw/mingw-stdint.h"
tmake_file="${tmake_file} aarch64/t-aarch64"
target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt.cc"
+   extra_options="${extra_options} mingw/cygming.opt mingw/mingw.opt"
+   extra_objs="${extra_objs} winnt.o"
+   c_target_objs="${c_target_objs} msformat-c.o"
+   d_target_objs="${d_target_objs} winnt-d.o"
+   tmake_file="${tmake_file} mingw/t-cygming"
case ${enable_threads} in
  "" | yes | win32)
thread_file='win32'
-- 
2.25.1

[PATCH v3 09/12] Rename "x86 Windows Options" to "Cygwin and MinGW Options"

[Evgeny Karpov]

From: Zac Walker 
Date: Thu, 11 Apr 2024 13:43:23 +0200
Subject: [PATCH v3 09/12] Rename "x86 Windows Options" to "Cygwin and MinGW
 Options"

Rename "x86 Windows Options" to "Cygwin and MinGW Options".
It will be used also for AArch64.

gcc/ChangeLog:

* config/i386/mingw-w64.opt.urls: Rename options' name and
regenerate option URLs.
* config/lynx.opt.urls: Likewise.
* config/mingw/cygming.opt.urls: Likewise.
* config/mingw/mingw.opt.urls: Likewise.
* doc/invoke.texi: Likewise.
---
 gcc/config/i386/mingw-w64.opt.urls |  2 +-
 gcc/config/lynx.opt.urls   |  2 +-
 gcc/config/mingw/cygming.opt.urls  | 18 +-
 gcc/config/mingw/mingw.opt.urls|  2 +-
 gcc/doc/invoke.texi| 10 ++
 5 files changed, 22 insertions(+), 12 deletions(-)

diff --git a/gcc/config/i386/mingw-w64.opt.urls 
b/gcc/config/i386/mingw-w64.opt.urls
index 6bb53ef29b2..5cceba1d1a1 100644
--- a/gcc/config/i386/mingw-w64.opt.urls
+++ b/gcc/config/i386/mingw-w64.opt.urls
@@ -1,5 +1,5 @@
 ; Autogenerated by regenerate-opt-urls.py from gcc/config/i386/mingw-w64.opt 
and generated HTML
 
 municode
-UrlSuffix(gcc/x86-Windows-Options.html#index-municode)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-municode)
 
diff --git a/gcc/config/lynx.opt.urls b/gcc/config/lynx.opt.urls
index 63e7b9c4b33..b547138f7ff 100644
--- a/gcc/config/lynx.opt.urls
+++ b/gcc/config/lynx.opt.urls
@@ -1,5 +1,5 @@
 ; Autogenerated by regenerate-opt-urls.py from gcc/config/lynx.opt and 
generated HTML
 
 mthreads
-UrlSuffix(gcc/x86-Windows-Options.html#index-mthreads-1)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mthreads-1)
 
diff --git a/gcc/config/mingw/cygming.opt.urls 
b/gcc/config/mingw/cygming.opt.urls
index 87799befe3c..c624e22e442 100644
--- a/gcc/config/mingw/cygming.opt.urls
+++ b/gcc/config/mingw/cygming.opt.urls
@@ -1,30 +1,30 @@
 ; Autogenerated by regenerate-opt-urls.py from gcc/config/i386/cygming.opt and 
generated HTML
 
 mconsole
-UrlSuffix(gcc/x86-Windows-Options.html#index-mconsole)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mconsole)
 
 mdll
-UrlSuffix(gcc/x86-Windows-Options.html#index-mdll)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mdll)
 
 mnop-fun-dllimport
-UrlSuffix(gcc/x86-Windows-Options.html#index-mnop-fun-dllimport)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mnop-fun-dllimport)
 
 ; skipping UrlSuffix for 'mthreads' due to multiple URLs:
+;   duplicate: 'gcc/Cygwin-and-MinGW-Options.html#index-mthreads-1'
 ;   duplicate: 'gcc/x86-Options.html#index-mthreads'
-;   duplicate: 'gcc/x86-Windows-Options.html#index-mthreads-1'
 
 mwin32
-UrlSuffix(gcc/x86-Windows-Options.html#index-mwin32)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mwin32)
 
 mwindows
-UrlSuffix(gcc/x86-Windows-Options.html#index-mwindows)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mwindows)
 
 mpe-aligned-commons
-UrlSuffix(gcc/x86-Windows-Options.html#index-mpe-aligned-commons)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mpe-aligned-commons)
 
 fset-stack-executable
-UrlSuffix(gcc/x86-Windows-Options.html#index-fno-set-stack-executable)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-fno-set-stack-executable)
 
 fwritable-relocated-rdata
-UrlSuffix(gcc/x86-Windows-Options.html#index-fno-writable-relocated-rdata)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-fno-writable-relocated-rdata)
 
diff --git a/gcc/config/mingw/mingw.opt.urls b/gcc/config/mingw/mingw.opt.urls
index 2cbbaadf310..f8ee5be6a53 100644
--- a/gcc/config/mingw/mingw.opt.urls
+++ b/gcc/config/mingw/mingw.opt.urls
@@ -1,7 +1,7 @@
 ; Autogenerated by regenerate-opt-urls.py from gcc/config/i386/mingw.opt and 
generated HTML
 
 mcrtdll=
-UrlSuffix(gcc/x86-Windows-Options.html#index-mcrtdll)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mcrtdll)
 
 ; skipping UrlSuffix for 'pthread' due to multiple URLs:
 ;   duplicate: 'gcc/Link-Options.html#index-pthread-1'
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 5d5e70c3033..951ab9ae2f8 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -1499,6 +1499,8 @@ See RS/6000 and PowerPC Options.
 -munroll-only-small-loops -mlam=@var{choice}}
 
 @emph{x86 Windows Options}
+
+@emph{Cygwin and MinGW Options}
 @gccoptlist{-mconsole  -mcrtdll=@var{library}  -mdll
 -mnop-fun-dllimport  -mthread
 -municode  -mwin32  -mwindows  -fno-set-stack-executable}
@@ -21027,6 +21029,7 @@ platform.
 * C6X Options::
 * CRIS Options::
 * C-SKY Options::
+* Cygwin and MinGW Options::
 * Darwin Options::
 * DEC Alpha Options::
 * eBPF Options::
@@ -36272,6 +36275,13 @@ positions 62:57 can be used for metadata.
 @cindex x86 Windows Options
 @cindex Windows Options for x86
 
+@xref{Cygwin and MinGW Options}.
+
+@node Cygwin and MinGW Options
+@subsection Cygwin and MinGW Options
+@cindex Cygwin and MinGW Options
+@cindex Options for Cygwin and MinGW
+
 These additional options are available for Microsoft Windows targets:
 
 

[PATCH v3 08/12] aarch64: Add SEH to machine_function

[Evgeny Karpov]

From: Zac Walker 
Date: Tue, 20 Feb 2024 18:10:08 +0100
Subject: [PATCH v3 08/12] aarch64: Add SEH to machine_function

SEH is not enabled in aarch64-w64-mingw32 target yet. However, it is
needed to be declared in machine_function for reusing winnt.cc.

gcc/ChangeLog:

* config/aarch64/aarch64.h (struct seh_frame_state): Declare SEH
structure in machine_function.
(GTY): Add SEH field.
---
 gcc/config/aarch64/aarch64.h | 6 ++
 1 file changed, 6 insertions(+)

diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h
index 6d360ca3e33..67736baedc1 100644
--- a/gcc/config/aarch64/aarch64.h
+++ b/gcc/config/aarch64/aarch64.h
@@ -1045,6 +1045,9 @@ struct GTY (()) aarch64_frame
   bool is_scs_enabled;
 };
 
+/* Private to winnt.cc.  */
+struct seh_frame_state;
+
 #ifdef hash_set_h
 typedef struct GTY (()) machine_function
 {
@@ -1085,6 +1088,9 @@ typedef struct GTY (()) machine_function
  still exists and still fulfils its original purpose. the same register
  can be reused by other code.  */
   rtx_insn *advsimd_zero_insn;
+
+  /* During SEH output, this is non-null.  */
+  struct seh_frame_state * GTY ((skip (""))) seh;
 } machine_function;
 #endif
 #endif
-- 
2.25.1

[PATCH v3 07/12] aarch64: Add Cygwin and MinGW environments for AArch64

[Evgeny Karpov]

From: Zac Walker 
Date: Thu, 11 Apr 2024 13:41:51 +0200
Subject: [PATCH v3 07/12] aarch64: Add Cygwin and MinGW environments for
 AArch64

Define Cygwin and MinGW environment such as types, SEH definitions,
shared libraries, etc.

gcc/ChangeLog:

* config.gcc: Add Cygwin and MinGW difinitions.
* config/aarch64/aarch64-protos.h
(mingw_pe_maybe_record_exported_symbol): Declare functions
which are used in Cygwin and MinGW environment.
(mingw_pe_section_type_flags): Likewise.
(mingw_pe_unique_section): Likewise.
(mingw_pe_encode_section_info): Likewise.
* config/aarch64/cygming.h: New file.
---
 gcc/config.gcc  |   4 +
 gcc/config/aarch64/aarch64-protos.h |   5 +
 gcc/config/aarch64/cygming.h| 172 
 3 files changed, 181 insertions(+)
 create mode 100644 gcc/config/aarch64/cygming.h

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 3bc4982850b..d2f92e0fc50 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1274,7 +1274,11 @@ aarch64*-*-gnu*)
 aarch64-*-mingw*)
tm_file="${tm_file} aarch64/aarch64-abi-ms.h"
tm_file="${tm_file} aarch64/aarch64-coff.h"
+   tm_file="${tm_file} aarch64/cygming.h"
+   tm_file="${tm_file} mingw/mingw32.h"
+   tm_file="${tm_file} mingw/mingw-stdint.h"
tmake_file="${tmake_file} aarch64/t-aarch64"
+   target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt.cc"
case ${enable_threads} in
  "" | yes | win32)
thread_file='win32'
diff --git a/gcc/config/aarch64/aarch64-protos.h 
b/gcc/config/aarch64/aarch64-protos.h
index 42639e9efcf..1d3f94c813e 100644
--- a/gcc/config/aarch64/aarch64-protos.h
+++ b/gcc/config/aarch64/aarch64-protos.h
@@ -1110,6 +1110,11 @@ extern void aarch64_output_patchable_area (unsigned int, 
bool);
 
 extern void aarch64_adjust_reg_alloc_order ();
 
+extern void mingw_pe_maybe_record_exported_symbol (tree, const char *, int);
+extern unsigned int mingw_pe_section_type_flags (tree, const char *, int);
+extern void mingw_pe_unique_section (tree, int);
+extern void mingw_pe_encode_section_info (tree, rtx, int);
+
 bool aarch64_optimize_mode_switching (aarch64_mode_entity);
 void aarch64_restore_za (rtx);
 
diff --git a/gcc/config/aarch64/cygming.h b/gcc/config/aarch64/cygming.h
new file mode 100644
index 000..2e7b01feb76
--- /dev/null
+++ b/gcc/config/aarch64/cygming.h
@@ -0,0 +1,172 @@
+/* Operating system specific defines to be used when targeting GCC for
+   hosting on Windows32, using a Unix style C library and tools.
+   Copyright (C) 1995-2024 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+.  */
+
+#ifndef GCC_AARCH64_CYGMING_H
+#define GCC_AARCH64_CYGMING_H
+
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE DINFO_TYPE_NONE
+
+#define FASTCALL_PREFIX '@'
+
+#define print_reg(rtx, code, file) (gcc_unreachable ())
+
+#define SYMBOL_FLAG_DLLIMPORT 0
+#define SYMBOL_FLAG_DLLEXPORT 0
+
+#define SYMBOL_REF_DLLEXPORT_P(X) \
+   ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_DLLEXPORT) != 0)
+
+/* Disable SEH and declare the required SEH-related macros that are
+still needed for compilation.  */
+#undef TARGET_SEH
+#define TARGET_SEH 0
+
+#define SSE_REGNO_P(N) (gcc_unreachable (), 0)
+#define GENERAL_REGNO_P(N) (gcc_unreachable (), 0)
+#define SEH_MAX_FRAME_SIZE (gcc_unreachable (), 0)
+
+#undef TARGET_PECOFF
+#define TARGET_PECOFF 1
+
+#include 
+#ifdef __MINGW32__
+#include 
+#endif
+
+extern void mingw_pe_asm_named_section (const char *, unsigned int, tree);
+extern void mingw_pe_declare_function_type (FILE *file, const char *name,
+   int pub);
+
+#define TARGET_ASM_NAMED_SECTION  mingw_pe_asm_named_section
+
+/* Select attributes for named sections.  */
+#define TARGET_SECTION_TYPE_FLAGS  mingw_pe_section_type_flags
+
+#define TARGET_ASM_UNIQUE_SECTION mingw_pe_unique_section
+#define TARGET_ENCODE_SECTION_INFO  mingw_pe_encode_section_info
+
+/* Declare the type properly for any external libcall.  */
+#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
+  mingw_pe_declare_function_type (FILE, XSTR (FUN, 0), 1)
+
+#define TARGET_OS_CPP_BUILTINS()   \
+  do   \
+{  \
+  

[PATCH v3 06/12] Exclude i386 functionality from aarch64 build

[Evgeny Karpov]

From: Zac Walker 
Date: Thu, 11 Apr 2024 13:38:59 +0200
Subject: [PATCH v3 06/12] Exclude i386 functionality from aarch64 build

This patch defines TARGET_AARCH64_MS_ABI in config.gcc and uses it to
exclude i386 functionality from aarch64 build and adjust MinGW headers
for AArch64 MS ABI.

gcc/ChangeLog:

* config.gcc: Define TARGET_AARCH64_MS_ABI.
* config/mingw/mingw-stdint.h (INTPTR_TYPE): Use
TARGET_AARCH64_MS_ABI to adjust MinGW headers for
AArch64 MS ABI.
(UINTPTR_TYPE): Likewise.
(defined): Likewise.
* config/mingw/mingw32.h (DEFAULT_ABI): Likewise.
(defined): Likewise.
* config/mingw/winnt.cc (defined): Use TARGET_ARM64_MS_ABI to
exclude ix86_get_callcvt.
(i386_pe_maybe_mangle_decl_assembler_name): Likewise.
(i386_pe_mangle_decl_assembler_name): Likewise.
---
 gcc/config.gcc  | 1 +
 gcc/config/mingw/mingw-stdint.h | 9 +++--
 gcc/config/mingw/mingw32.h  | 4 +++-
 gcc/config/mingw/winnt.cc   | 8 
 4 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 1712441429c..3bc4982850b 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1285,6 +1285,7 @@ aarch64-*-mingw*)
esac
default_use_cxa_atexit=yes
user_headers_inc_next_post="${user_headers_inc_next_post} float.h"
+   tm_defines="${tm_defines} TARGET_AARCH64_MS_ABI=1"
;;
 aarch64*-wrs-vxworks*)
 tm_file="${tm_file} elfos.h aarch64/aarch64-elf.h"
diff --git a/gcc/config/mingw/mingw-stdint.h b/gcc/config/mingw/mingw-stdint.h
index c0feade76e9..debbe829bdf 100644
--- a/gcc/config/mingw/mingw-stdint.h
+++ b/gcc/config/mingw/mingw-stdint.h
@@ -46,5 +46,10 @@ along with GCC; see the file COPYING3.  If not see
 #define UINT_FAST32_TYPE "unsigned int"
 #define UINT_FAST64_TYPE "long long unsigned int"
 
-#define INTPTR_TYPE (TARGET_64BIT ? "long long int" : "int")
-#define UINTPTR_TYPE (TARGET_64BIT ? "long long unsigned int" : "unsigned int")
+#if defined (TARGET_AARCH64_MS_ABI)
+# define INTPTR_TYPE "long long int"
+# define UINTPTR_TYPE "long long unsigned int"
+#else
+# define INTPTR_TYPE (TARGET_64BIT ? "long long int" : "int")
+# define UINTPTR_TYPE (TARGET_64BIT ? "long long unsigned int" : "unsigned 
int")
+#endif
\ No newline at end of file
diff --git a/gcc/config/mingw/mingw32.h b/gcc/config/mingw/mingw32.h
index 58304fc55f6..08f1b5f0696 100644
--- a/gcc/config/mingw/mingw32.h
+++ b/gcc/config/mingw/mingw32.h
@@ -19,7 +19,9 @@ along with GCC; see the file COPYING3.  If not see
 .  */
 
 #undef DEFAULT_ABI
-#define DEFAULT_ABI MS_ABI
+#if !defined (TARGET_AARCH64_MS_ABI)
+# define DEFAULT_ABI MS_ABI
+#endif
 
 /* By default, target has a 80387, uses IEEE compatible arithmetic,
returns float values in the 387 and needs stack probes.
diff --git a/gcc/config/mingw/winnt.cc b/gcc/config/mingw/winnt.cc
index 1ed383155d0..2a4fc03fc56 100644
--- a/gcc/config/mingw/winnt.cc
+++ b/gcc/config/mingw/winnt.cc
@@ -224,6 +224,8 @@ gen_stdcall_or_fastcall_suffix (tree decl, tree id, bool 
fastcall)
   return get_identifier (new_str);
 }
 
+#if !defined (TARGET_AARCH64_MS_ABI)
+
 /* Maybe decorate and get a new identifier for the DECL of a stdcall or
fastcall function. The original identifier is supplied in ID. */
 
@@ -250,6 +252,8 @@ i386_pe_maybe_mangle_decl_assembler_name (tree decl, tree 
id)
   return new_id;
 }
 
+#endif
+
 /* Emit an assembler directive to set symbol for DECL visibility to
the visibility type VIS, which must not be VISIBILITY_DEFAULT.
As for PE there is no hidden support in gas, we just warn for
@@ -266,6 +270,8 @@ i386_pe_assemble_visibility (tree decl, int)
  "in this configuration; ignored");
 }
 
+#if !defined (TARGET_AARCH64_MS_ABI)
+
 /* This is used as a target hook to modify the DECL_ASSEMBLER_NAME
in the language-independent default hook
langhooks,c:lhd_set_decl_assembler_name ()
@@ -278,6 +284,8 @@ i386_pe_mangle_decl_assembler_name (tree decl, tree id)
   return (new_id ? new_id : id);
 }
 
+#endif
+
 /* This hook behaves the same as varasm.cc/assemble_name(), but
generates the name into memory rather than outputting it to
a file stream.  */
-- 
2.25.1

[PATCH v3 05/12] Rename section and encoding functions from i386 which will be used in aarch64

[Evgeny Karpov]

From: Zac Walker 
Date: Tue, 20 Feb 2024 17:22:31 +0100
Subject: [PATCH v3 05/12] Rename section and encoding functions from i386
 which will be used in aarch64

gcc/ChangeLog:

* config/i386/cygming.h (SUBTARGET_ENCODE_SECTION_INFO):
Rename functions in mingw folder which will be reused for
aarch64.
(TARGET_ASM_UNIQUE_SECTION): Likewise.
(TARGET_ASM_NAMED_SECTION): Likewise.
(TARGET_SECTION_TYPE_FLAGS): Likewise.
(ASM_DECLARE_COLD_FUNCTION_NAME): Likewise.
(ASM_OUTPUT_EXTERNAL_LIBCALL): Likewise.
* config/i386/i386-protos.h (i386_pe_unique_section):
Rename into ...
(mingw_pe_unique_section): ... this.
(i386_pe_declare_function_type): Rename into ...
(mingw_pe_declare_function_type): ... this.
(i386_pe_encode_section_info): Rename into ...
(mingw_pe_encode_section_info): ... this.
(i386_pe_maybe_record_exported_symbol): Rename into ...
(mingw_pe_maybe_record_exported_symbol): ... this.
(i386_pe_section_type_flags): Rename into ...
(mingw_pe_section_type_flags): ... this.
(i386_pe_asm_named_section): Rename into ...
(mingw_pe_asm_named_section): ... this.
* config/mingw/winnt.cc (i386_pe_encode_section_info):
Rename into ...
(mingw_pe_encode_section_info): ... this.
(i386_pe_unique_section): Rename into ...
(mingw_pe_unique_section): ... this.
(i386_pe_section_type_flags): Rename into ...
(mingw_pe_section_type_flags): ... this.
(i386_pe_asm_named_section): Rename into ...
(mingw_pe_asm_named_section): ... this.
(i386_pe_asm_output_aligned_decl_common): Likewise.
(i386_pe_declare_function_type): Rename into ...
(mingw_pe_declare_function_type): ... this.
(i386_pe_maybe_record_exported_symbol): Rename into ...
(mingw_pe_maybe_record_exported_symbol): ... this.
(i386_pe_start_function): Likewise.
* varasm.cc (switch_to_comdat_section): Likewise.
---
 gcc/config/i386/cygming.h | 18 +-
 gcc/config/i386/i386-protos.h | 12 ++--
 gcc/config/mingw/winnt.cc | 22 +++---
 gcc/varasm.cc |  2 +-
 4 files changed, 27 insertions(+), 27 deletions(-)

diff --git a/gcc/config/i386/cygming.h b/gcc/config/i386/cygming.h
index 1af5bc380a5..beedf7c398a 100644
--- a/gcc/config/i386/cygming.h
+++ b/gcc/config/i386/cygming.h
@@ -219,7 +219,7 @@ do {
\
section and we need to set DECL_SECTION_NAME so we do that here.
Note that we can be called twice on the same decl.  */
 
-#define SUBTARGET_ENCODE_SECTION_INFO  i386_pe_encode_section_info
+#define SUBTARGET_ENCODE_SECTION_INFO  mingw_pe_encode_section_info
 
 /* Local and global relocs can be placed always into readonly memory
for PE-COFF targets.  */
@@ -235,7 +235,7 @@ do {
\
 #undef ASM_DECLARE_OBJECT_NAME
 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL)\
 do {   \
-  i386_pe_maybe_record_exported_symbol (DECL, NAME, 1);\
+  mingw_pe_maybe_record_exported_symbol (DECL, NAME, 1);   \
   ASM_OUTPUT_LABEL ((STREAM), (NAME)); \
 } while (0)
 
@@ -283,16 +283,16 @@ do {  \
 /* Windows uses explicit import from shared libraries.  */
 #define MULTIPLE_SYMBOL_SPACES 1
 
-#define TARGET_ASM_UNIQUE_SECTION i386_pe_unique_section
+#define TARGET_ASM_UNIQUE_SECTION mingw_pe_unique_section
 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
 
 #define SUPPORTS_ONE_ONLY 1
 
 /* Switch into a generic section.  */
-#define TARGET_ASM_NAMED_SECTION  i386_pe_asm_named_section
+#define TARGET_ASM_NAMED_SECTION  mingw_pe_asm_named_section
 
 /* Select attributes for named sections.  */
-#define TARGET_SECTION_TYPE_FLAGS  i386_pe_section_type_flags
+#define TARGET_SECTION_TYPE_FLAGS  mingw_pe_section_type_flags
 
 /* Write the extra assembler code needed to declare a function
properly.  */
@@ -307,7 +307,7 @@ do {\
 #define ASM_DECLARE_COLD_FUNCTION_NAME(FILE, NAME, DECL)   \
   do   \
 {  \
-  i386_pe_declare_function_type (FILE, NAME, 0);   \
+  mingw_pe_declare_function_type (FILE, NAME, 0);  \
   i386_pe_seh_cold_init (FILE, NAME);  \
   ASM_OUTPUT_LABEL (FILE, NAME);   \
 }  \
@@ -333,7 +333,7 @@ do {\
 
 /* Declare the type properly for any external libcall.  */
 #define 

[PATCH v3 04/12] Reuse MinGW from i386 for AArch64

[Evgeny Karpov]

From: Zac Walker 
Date: Fri, 1 Mar 2024 02:41:50 +0100
Subject: [PATCH v3 04/12] Reuse MinGW from i386 for AArch64

This patch creates a new config/mingw directory to share MinGW
related definitions, and moves there the corresponding existing files
from config/i386.

gcc/ChangeLog:

* config.gcc: Adjust targets after moving MinGW related files
from i386 to mingw folder.
* config/i386/cygming.opt: Move to...
* config/mingw/cygming.opt: ...here.
* config/i386/cygming.opt.urls: Move to...
* config/mingw/cygming.opt.urls: ...here.
* config/i386/cygwin-d.cc: Move to...
* config/mingw/cygwin-d.cc: ...here.
* config/i386/mingw-stdint.h: Move to...
* config/mingw/mingw-stdint.h: ...here.
* config/i386/mingw.opt: Move to...
* config/mingw/mingw.opt: ...here.
* config/i386/mingw.opt.urls: Move to...
* config/mingw/mingw.opt.urls: ...here.
* config/i386/mingw32.h: Move to...
* config/mingw/mingw32.h: ...here.
* config/i386/msformat-c.cc: Move to...
* config/mingw/msformat-c.cc: ...here.
* config/i386/t-cygming: Move to...
* config/mingw/t-cygming: ...here and updated.
* config/i386/winnt-cxx.cc: Move to...
* config/mingw/winnt-cxx.cc: ...here.
* config/i386/winnt-d.cc: Move to...
* config/mingw/winnt-d.cc: ...here.
* config/i386/winnt-stubs.cc: Move to...
* config/mingw/winnt-stubs.cc: ...here.
* config/i386/winnt.cc: Move to...
* config/mingw/winnt.cc: ...here.
---
 gcc/config.gcc  | 22 ++--
 gcc/config/{i386 => mingw}/cygming.opt  |  0
 gcc/config/{i386 => mingw}/cygming.opt.urls |  0
 gcc/config/{i386 => mingw}/cygwin-d.cc  |  0
 gcc/config/{i386 => mingw}/mingw-stdint.h   |  0
 gcc/config/{i386 => mingw}/mingw.opt|  0
 gcc/config/{i386 => mingw}/mingw.opt.urls   |  0
 gcc/config/{i386 => mingw}/mingw32.h|  0
 gcc/config/{i386 => mingw}/msformat-c.cc|  0
 gcc/config/{i386 => mingw}/t-cygming| 23 -
 gcc/config/{i386 => mingw}/winnt-cxx.cc |  0
 gcc/config/{i386 => mingw}/winnt-d.cc   |  0
 gcc/config/{i386 => mingw}/winnt-stubs.cc   |  0
 gcc/config/{i386 => mingw}/winnt.cc |  0
 14 files changed, 24 insertions(+), 21 deletions(-)
 rename gcc/config/{i386 => mingw}/cygming.opt (100%)
 rename gcc/config/{i386 => mingw}/cygming.opt.urls (100%)
 rename gcc/config/{i386 => mingw}/cygwin-d.cc (100%)
 rename gcc/config/{i386 => mingw}/mingw-stdint.h (100%)
 rename gcc/config/{i386 => mingw}/mingw.opt (100%)
 rename gcc/config/{i386 => mingw}/mingw.opt.urls (100%)
 rename gcc/config/{i386 => mingw}/mingw32.h (100%)
 rename gcc/config/{i386 => mingw}/msformat-c.cc (100%)
 rename gcc/config/{i386 => mingw}/t-cygming (73%)
 rename gcc/config/{i386 => mingw}/winnt-cxx.cc (100%)
 rename gcc/config/{i386 => mingw}/winnt-d.cc (100%)
 rename gcc/config/{i386 => mingw}/winnt-stubs.cc (100%)
 rename gcc/config/{i386 => mingw}/winnt.cc (100%)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index dffc041cc18..1712441429c 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -2168,9 +2168,9 @@ i[4567]86-wrs-vxworks*|x86_64-wrs-vxworks7*)
 i[34567]86-*-cygwin*)
tm_file="${tm_file} i386/unix.h i386/bsd.h i386/gas.h i386/cygming.h 
i386/cygwin.h i386/cygwin-stdint.h"
xm_file=i386/xm-cygwin.h
-   tmake_file="${tmake_file} i386/t-cygming t-slibgcc"
-   target_gtfiles="$target_gtfiles \$(srcdir)/config/i386/winnt.cc"
-   extra_options="${extra_options} i386/cygming.opt i386/cygwin.opt"
+   tmake_file="${tmake_file} mingw/t-cygming t-slibgcc"
+   target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt.cc"
+   extra_options="${extra_options} mingw/cygming.opt i386/cygwin.opt"
extra_objs="${extra_objs} winnt.o winnt-stubs.o"
c_target_objs="${c_target_objs} msformat-c.o"
cxx_target_objs="${cxx_target_objs} winnt-cxx.o msformat-c.o"
@@ -2186,9 +2186,9 @@ x86_64-*-cygwin*)
need_64bit_isa=yes
tm_file="${tm_file} i386/unix.h i386/bsd.h i386/gas.h i386/cygming.h 
i386/cygwin.h i386/cygwin-w64.h i386/cygwin-stdint.h"
xm_file=i386/xm-cygwin.h
-   tmake_file="${tmake_file} i386/t-cygming t-slibgcc"
-   target_gtfiles="$target_gtfiles \$(srcdir)/config/i386/winnt.cc"
-   extra_options="${extra_options} i386/cygming.opt i386/cygwin.opt"
+   tmake_file="${tmake_file} mingw/t-cygming t-slibgcc"
+   target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt.cc"
+   extra_options="${extra_options} mingw/cygming.opt i386/cygwin.opt"
extra_objs="${extra_objs} winnt.o winnt-stubs.o"
c_target_objs="${c_target_objs} msformat-c.o"
cxx_target_objs="${cxx_target_objs} winnt-cxx.o msformat-c.o"
@@ -2224,7 +2224,7 @@ i[34567]86-*-mingw* | x86_64-*-mingw*)
if test x$enable_threads = xmcf 

[PATCH v3 03/12] aarch64: Add aarch64-w64-mingw32 COFF

[Evgeny Karpov]

From: Zac Walker 
Date: Thu, 11 Apr 2024 14:46:07 +0200
Subject: [PATCH v3 03/12] aarch64: Add aarch64-w64-mingw32 COFF

Define ASM specific for COFF format on AArch64.

gcc/ChangeLog:

* config.gcc: Add COFF format support definitions.
* config/aarch64/aarch64-coff.h: New file.
---
 gcc/config.gcc|  1 +
 gcc/config/aarch64/aarch64-coff.h | 91 +++
 2 files changed, 92 insertions(+)
 create mode 100644 gcc/config/aarch64/aarch64-coff.h

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 0aeb5641461..dffc041cc18 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1273,6 +1273,7 @@ aarch64*-*-gnu*)
;;
 aarch64-*-mingw*)
tm_file="${tm_file} aarch64/aarch64-abi-ms.h"
+   tm_file="${tm_file} aarch64/aarch64-coff.h"
tmake_file="${tmake_file} aarch64/t-aarch64"
case ${enable_threads} in
  "" | yes | win32)
diff --git a/gcc/config/aarch64/aarch64-coff.h 
b/gcc/config/aarch64/aarch64-coff.h
new file mode 100644
index 000..81fd9954f75
--- /dev/null
+++ b/gcc/config/aarch64/aarch64-coff.h
@@ -0,0 +1,91 @@
+/* Machine description for AArch64 architecture.
+   Copyright (C) 2024 Free Software Foundation, Inc.
+
+   This file is part of GCC.
+
+   GCC is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   GCC is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GCC; see the file COPYING3.  If not see
+   .  */
+
+#ifndef GCC_AARCH64_COFF_H
+#define GCC_AARCH64_COFF_H
+
+#ifndef LOCAL_LABEL_PREFIX
+# define LOCAL_LABEL_PREFIX""
+#endif
+
+/* Using long long breaks -ansi and -std=c90, so these will need to be
+   made conditional for an LLP64 ABI.  */
+#undef SIZE_TYPE
+#define SIZE_TYPE  "long long unsigned int"
+
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE   "long long int"
+
+#undef LONG_TYPE_SIZE
+#define LONG_TYPE_SIZE 32
+
+#ifndef ASM_GENERATE_INTERNAL_LABEL
+# define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)  \
+  sprintf (STRING, "*%s%s%u", LOCAL_LABEL_PREFIX, PREFIX, (unsigned int)(NUM))
+#endif
+
+#define ASM_OUTPUT_ALIGN(STREAM, POWER)\
+  fprintf (STREAM, "\t.align\t%d\n", (int)POWER)
+
+/* Output a common block.  */
+#ifndef ASM_OUTPUT_COMMON
+# define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)\
+{  \
+  fprintf (STREAM, "\t.comm\t");   \
+  assemble_name (STREAM, NAME);\
+  asm_fprintf (STREAM, ", %d, %d\n",   \
+  (int)(ROUNDED), (int)(SIZE));\
+}
+#endif
+
+/* Output a local common block.  /bin/as can't do this, so hack a
+   `.space' into the bss segment.  Note that this is *bad* practice,
+   which is guaranteed NOT to work since it doesn't define STATIC
+   COMMON space but merely STATIC BSS space.  */
+#ifndef ASM_OUTPUT_ALIGNED_LOCAL
+# define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN)   \
+{  \
+  switch_to_section (bss_section); \
+  ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT));   \
+  ASM_OUTPUT_LABEL (STREAM, NAME); \
+  fprintf (STREAM, "\t.space\t%d\n", (int)(SIZE)); \
+}
+#endif
+
+#define ASM_OUTPUT_SKIP(STREAM, NBYTES)\
+  fprintf (STREAM, "\t.space\t%d  // skip\n", (int) (NBYTES))
+
+/* Definitions that are not yet supported by binutils for the
+   aarch64-w64-mingw32 target.  */
+#define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE)
+#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)
+
+#define TEXT_SECTION_ASM_OP"\t.text"
+#define DATA_SECTION_ASM_OP"\t.data"
+#define BSS_SECTION_ASM_OP "\t.bss"
+
+#define CTORS_SECTION_ASM_OP   "\t.section\t.ctors, \"aw\""
+#define DTORS_SECTION_ASM_OP   "\t.section\t.dtors, \"aw\""
+
+#define GLOBAL_ASM_OP "\t.global\t"
+
+#undef SUPPORTS_INIT_PRIORITY
+#define SUPPORTS_INIT_PRIORITY 0
+
+#endif
-- 
2.25.1

[PATCH v3 02/12] aarch64: Mark x18 register as a fixed register for MS ABI

[Evgeny Karpov]

From: Zac Walker 
Date: Thu, 11 Apr 2024 13:30:27 +0200
Subject: [PATCH v3 02/12] aarch64: Mark x18 register as a fixed register for
 MS ABI

Define the MS ABI for aarch64-w64-mingw32.
Adjust FIXED_REGISTERS, CALL_REALLY_USED_REGISTERS and
STATIC_CHAIN_REGNUM for AArch64 MS ABI.
The X18 register is reserved on Windows for the TEB.

gcc/ChangeLog:

* config.gcc: Define TARGET_AARCH64_MS_ABI when
AArch64 MS ABI is used.
* config/aarch64/aarch64.h (FIXED_X18): Adjust
FIXED_REGISTERS, CALL_REALLY_USED_REGISTERS and
STATIC_CHAIN_REGNUM for AArch64 MS ABI.
(CALL_USED_X18): Likewise.
(FIXED_REGISTERS): Likewise.
* config/aarch64/aarch64-abi-ms.h: New file.
---
 gcc/config.gcc  |  1 +
 gcc/config/aarch64/aarch64-abi-ms.h | 34 +
 gcc/config/aarch64/aarch64.h|  7 --
 3 files changed, 40 insertions(+), 2 deletions(-)
 create mode 100644 gcc/config/aarch64/aarch64-abi-ms.h

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 6f97f24af10..0aeb5641461 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1272,6 +1272,7 @@ aarch64*-*-gnu*)
 tm_defines="${tm_defines}  TARGET_DEFAULT_ASYNC_UNWIND_TABLES=1"
;;
 aarch64-*-mingw*)
+   tm_file="${tm_file} aarch64/aarch64-abi-ms.h"
tmake_file="${tmake_file} aarch64/t-aarch64"
case ${enable_threads} in
  "" | yes | win32)
diff --git a/gcc/config/aarch64/aarch64-abi-ms.h 
b/gcc/config/aarch64/aarch64-abi-ms.h
new file mode 100644
index 000..15dc33d0474
--- /dev/null
+++ b/gcc/config/aarch64/aarch64-abi-ms.h
@@ -0,0 +1,34 @@
+/* Machine description for AArch64 MS ABI.
+   Copyright (C) 2024 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+.  */
+
+#ifndef GCC_AARCH64_ABI_MS_H
+#define GCC_AARCH64_ABI_MS_H
+
+/* X18 reserved for the TEB on Windows.  */
+
+#undef FIXED_X18
+#define FIXED_X18 1
+
+#undef CALL_USED_X18
+#define CALL_USED_X18 0
+
+#undef  STATIC_CHAIN_REGNUM
+#define STATIC_CHAIN_REGNUM R17_REGNUM
+
+#endif /* GCC_AARCH64_ABI_MS_H.  */
diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h
index 45e901cda64..6d360ca3e33 100644
--- a/gcc/config/aarch64/aarch64.h
+++ b/gcc/config/aarch64/aarch64.h
@@ -536,11 +536,14 @@ constexpr auto AARCH64_FL_DEFAULT_ISA_MODE = 
AARCH64_FL_SM_OFF;
register.  GCC internally uses the poly_int variable aarch64_sve_vg
instead.  */
 
+#define FIXED_X18 0
+#define CALL_USED_X18 1
+
 #define FIXED_REGISTERS\
   {\
 0, 0, 0, 0,   0, 0, 0, 0,  /* R0 - R7 */   \
 0, 0, 0, 0,   0, 0, 0, 0,  /* R8 - R15 */  \
-0, 0, 0, 0,   0, 0, 0, 0,  /* R16 - R23 */ \
+0, 0, FIXED_X18, 0,   0, 0, 0, 0,  /* R16 - R23.  */   \
 0, 0, 0, 0,   0, 1, 0, 1,  /* R24 - R30, SP */ \
 0, 0, 0, 0,   0, 0, 0, 0,   /* V0 - V7 */   \
 0, 0, 0, 0,   0, 0, 0, 0,   /* V8 - V15 */ \
@@ -564,7 +567,7 @@ constexpr auto AARCH64_FL_DEFAULT_ISA_MODE = 
AARCH64_FL_SM_OFF;
   {\
 1, 1, 1, 1,   1, 1, 1, 1,  /* R0 - R7 */   \
 1, 1, 1, 1,   1, 1, 1, 1,  /* R8 - R15 */  \
-1, 1, 1, 0,   0, 0, 0, 0,  /* R16 - R23 */ \
+1, 1, CALL_USED_X18, 0, 0,   0, 0, 0, /* R16 - R23.  */   \
 0, 0, 0, 0,   0, 1, 1, 1,  /* R24 - R30, SP */ \
 1, 1, 1, 1,   1, 1, 1, 1,  /* V0 - V7 */   \
 0, 0, 0, 0,   0, 0, 0, 0,  /* V8 - V15 */  \
-- 
2.25.1

[PATCH v3 01/12] Introduce aarch64-w64-mingw32 target

[Evgeny Karpov]

From: Zac Walker 
Date: Fri, 1 Mar 2024 01:40:53 +0100
Subject: [PATCH v3 01/12] Introduce aarch64-w64-mingw32 target

Add the initial aarch64-w64-mingw32 target for gcc.

This is the first commit in a sequence of patch series to add
new aarch64-w64-mingw32 target.

Coauthors: Zac Walker ,
Mark Harmstone   and
Ron Riddle 

Refactored, prepared, and validated by
Radek Barton  and
Evgeny Karpov 

fixincludes/ChangeLog:

* mkfixinc.sh: Extend for *-mingw32* targets.

gcc/ChangeLog:

* config.gcc: Add aarch64-w64-mingw32 target.
---
 fixincludes/mkfixinc.sh |  3 +--
 gcc/config.gcc  | 13 +
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/fixincludes/mkfixinc.sh b/fixincludes/mkfixinc.sh
index df90720b716..7112f4dcd64 100755
--- a/fixincludes/mkfixinc.sh
+++ b/fixincludes/mkfixinc.sh
@@ -12,8 +12,7 @@ target=fixinc.sh
 # Check for special fix rules for particular targets
 case $machine in
 i?86-*-cygwin* | \
-i?86-*-mingw32* | \
-x86_64-*-mingw32* | \
+*-mingw32* | \
 powerpc-*-eabisim* | \
 powerpc-*-eabi*| \
 powerpc-*-rtems*   | \
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 5df3c52f8e9..6f97f24af10 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1271,6 +1271,19 @@ aarch64*-*-gnu*)
 tmake_file="${tmake_file} aarch64/t-aarch64"
 tm_defines="${tm_defines}  TARGET_DEFAULT_ASYNC_UNWIND_TABLES=1"
;;
+aarch64-*-mingw*)
+   tmake_file="${tmake_file} aarch64/t-aarch64"
+   case ${enable_threads} in
+ "" | yes | win32)
+   thread_file='win32'
+   ;;
+ posix)
+   thread_file='posix'
+   ;;
+   esac
+   default_use_cxa_atexit=yes
+   user_headers_inc_next_post="${user_headers_inc_next_post} float.h"
+   ;;
 aarch64*-wrs-vxworks*)
 tm_file="${tm_file} elfos.h aarch64/aarch64-elf.h"
 tm_file="${tm_file} vx-common.h vxworks.h aarch64/aarch64-vxworks.h"
-- 
2.25.1

[PATCH v3 00/12] Add aarch64-w64-mingw32 target

[Evgeny Karpov]

Hello,

Thank you for reviewing v2!
v3 addresses all comments on v2.

v3 Changes:
- Exclude the aarch64_calling_abi declaration from the patch series.
- Refactor x18 adjustment for MS ABI.
- Remove unnecessary headers.
- Add an extra comment to explain empty definitions.
- Use gcc_unreachable for definitions that are needed for compilation, 
but not used by the aarch64-w64-mingw32 target.
- Retain old index entries.
- Rebase from 11th April 2024

Regards,
Evgeny


Zac Walker (12):
  Introduce aarch64-w64-mingw32 target
  aarch64: Mark x18 register as a fixed register for MS ABI
  aarch64: Add aarch64-w64-mingw32 COFF
  Reuse MinGW from i386 for AArch64
  Rename section and encoding functions from i386 which will be used in
aarch64
  Exclude i386 functionality from aarch64 build
  aarch64: Add Cygwin and MinGW environments for AArch64
  aarch64: Add SEH to machine_function
  Rename "x86 Windows Options" to "Cygwin and MinGW Options"
  aarch64: Build and add objects for Cygwin and MinGW for AArch64
  aarch64: Add aarch64-w64-mingw32 target to libatomic
  Add aarch64-w64-mingw32 target to libgcc

 fixincludes/mkfixinc.sh   |   3 +-
 gcc/config.gcc|  47 +++--
 gcc/config/aarch64/aarch64-abi-ms.h   |  34 
 gcc/config/aarch64/aarch64-coff.h |  91 +
 gcc/config/aarch64/aarch64-protos.h   |   5 +
 gcc/config/aarch64/aarch64.h  |  13 +-
 gcc/config/aarch64/cygming.h  | 172 ++
 gcc/config/i386/cygming.h |  18 +-
 gcc/config/i386/cygming.opt.urls  |  30 ---
 gcc/config/i386/i386-protos.h |  12 +-
 gcc/config/i386/mingw-w64.opt.urls|   2 +-
 gcc/config/lynx.opt.urls  |   2 +-
 gcc/config/{i386 => mingw}/cygming.opt|   0
 gcc/config/mingw/cygming.opt.urls |  30 +++
 gcc/config/{i386 => mingw}/cygwin-d.cc|   0
 gcc/config/{i386 => mingw}/mingw-stdint.h |   9 +-
 gcc/config/{i386 => mingw}/mingw.opt  |   0
 gcc/config/{i386 => mingw}/mingw.opt.urls |   2 +-
 gcc/config/{i386 => mingw}/mingw32.h  |   4 +-
 gcc/config/{i386 => mingw}/msformat-c.cc  |   0
 gcc/config/{i386 => mingw}/t-cygming  |  23 ++-
 gcc/config/{i386 => mingw}/winnt-cxx.cc   |   0
 gcc/config/{i386 => mingw}/winnt-d.cc |   0
 gcc/config/{i386 => mingw}/winnt-stubs.cc |   0
 gcc/config/{i386 => mingw}/winnt.cc   |  30 +--
 gcc/doc/invoke.texi   |  10 +
 gcc/varasm.cc |   2 +-
 libatomic/configure.tgt   |   2 +-
 libgcc/config.host|  23 ++-
 libgcc/config/aarch64/t-no-eh |   2 +
 libgcc/config/{i386 => mingw}/t-gthr-win32|   0
 libgcc/config/{i386 => mingw}/t-mingw-pthread |   0
 32 files changed, 473 insertions(+), 93 deletions(-)
 create mode 100644 gcc/config/aarch64/aarch64-abi-ms.h
 create mode 100644 gcc/config/aarch64/aarch64-coff.h
 create mode 100644 gcc/config/aarch64/cygming.h
 delete mode 100644 gcc/config/i386/cygming.opt.urls
 rename gcc/config/{i386 => mingw}/cygming.opt (100%)
 create mode 100644 gcc/config/mingw/cygming.opt.urls
 rename gcc/config/{i386 => mingw}/cygwin-d.cc (100%)
 rename gcc/config/{i386 => mingw}/mingw-stdint.h (86%)
 rename gcc/config/{i386 => mingw}/mingw.opt (100%)
 rename gcc/config/{i386 => mingw}/mingw.opt.urls (86%)
 rename gcc/config/{i386 => mingw}/mingw32.h (99%)
 rename gcc/config/{i386 => mingw}/msformat-c.cc (100%)
 rename gcc/config/{i386 => mingw}/t-cygming (73%)
 rename gcc/config/{i386 => mingw}/winnt-cxx.cc (100%)
 rename gcc/config/{i386 => mingw}/winnt-d.cc (100%)
 rename gcc/config/{i386 => mingw}/winnt-stubs.cc (100%)
 rename gcc/config/{i386 => mingw}/winnt.cc (97%)
 create mode 100644 libgcc/config/aarch64/t-no-eh
 rename libgcc/config/{i386 => mingw}/t-gthr-win32 (100%)
 rename libgcc/config/{i386 => mingw}/t-mingw-pthread (100%)

-- 
2.25.1

[PING][PATCH v2 00/13] Add aarch64-w64-mingw32 target

[Evgeny Karpov]

On Thursday, March 7, 2024 9:48 PM
Evgeny Karpov wrote:

> > Changes from v1 to v2:
> > Adjust the target name to aarch64-*-mingw* to exclude the big-endian
> > target from support.
> > Exclude 64-bit ISA.

> > Update commit descriptions to follow standard style.
> > Rebase from 4th March 2024.
> 
> Hello,
> 
> It looks like the initial feedback has been addressed.
> While unit testing for the x86_64-w64-mingw32 target is still in progress, the
> first 4 patches do not obviously change other targets, including 
> aarch64-linux-
> gnu.
> Could they be merged once stage 1 starts, or could it be done even now?
> Thanks!
> 
> Regards,
> Evgeny

Hello,

The original question was about merging the first 4 patches from the series. 
Since then, we have obtained regression tests 
https://gcc.gnu.org/pipermail/gcc-patches/2024-March/648086.html .
It appears that it would be safe to merge the entire series without breaking 
other targets.

Regards,
Evgeny

[PATCH v2 00/13] Add aarch64-w64-mingw32 target

[Evgeny Karpov]

Monday, March 18, 2024 2:34 PM
Christophe Lyon wrote:

> I had a look at the v2 series, and besides a minor comment patch #8, ISTM than
> all the comments your received about v1 have been addressed, indeed.
> 
> > While unit testing for the x86_64-w64-mingw32 target is still in
> > progress, the first 4 patches do not obviously change other targets,
> > including aarch64-linux-gnu.
> > Could they be merged once stage 1 starts, or could it be done even
> > now?
> 
> What would be the benefit of committing only the first 4 patches?
> (whether now or when stage 1 reopens)
> 
> Thanks,
> 
> Christophe

Work on obtaining regression test results for x86_x64-w64-mingw32 was still in 
progress at that moment.
The first 4 patches do not obviously change other targets, so it was safe to 
merge them.
Now, based on the regression test results 
https://gcc.gnu.org/pipermail/gcc-patches/2024-March/647967.html,
it appears safe to merge the entire series.

Regards,
Evgeny

[PATCH v2 08/13] aarch64: Add Cygwin and MinGW environments for AArch64

[Evgeny Karpov]

Monday, March 18, 2024 2:27 PM
Christophe Lyon wrote: 

> > +/* Disable SEH and declare the required SEH-related macros that are
> > +still needed for compilation.  */ #undef TARGET_SEH #define
> > +TARGET_SEH 0
> > +
> > +#define SSE_REGNO_P(N) 0
> > +#define GENERAL_REGNO_P(N) 0
> I think you forgot to add a comment to explain the above two lines.
> (it was requested during v1 review)
> 
> Thanks,
> 
> Christophe

Hi Christophe,

Thank you for the review!
The comment regarding SEH and SEH-related macros has been added two lines above.
It may not be obvious, but these macros are needed to emit SEH data in 
mingw/winnt.cc.
This group is separated by an empty line; however, it still relates to 
SEH-related macros.

Regards,
Evgeny

[PATCH v2 00/13] Add aarch64-w64-mingw32 target

[Evgeny Karpov]

Monday, March 4, 2024
Evgeny Karpov wrote:

>
> Changes from v1 to v2:
> Adjust the target name to aarch64-*-mingw* to exclude the big-endian target
> from support.
> Exclude 64-bit ISA.
> Rename enum calling_abi to aarch64_calling_abi.
> Move AArch64 MS ABI definitions FIXED_REGISTERS,
> CALL_REALLY_USED_REGISTERS, and STATIC_CHAIN_REGNUM from aarch64.h
> to aarch64-abi-ms.h.
> Rename TARGET_ARM64_MS_ABI to TARGET_AARCH64_MS_ABI.
> Exclude TARGET_64BIT from the aarch64 target.
> Exclude HAVE_GAS_WEAK.
> Set HAVE_GAS_ALIGNED_COMM to 1 by default.
> Use a reference from "x86 Windows Options" to "Cygwin and MinGW
> Options".
> Update commit descriptions to follow standard style.
> Rebase from 4th March 2024.

Hello,

It looks like the initial feedback has been addressed.
While unit testing for the x86_64-w64-mingw32 target is still in
progress, the first 4 patches do not obviously change other
targets, including aarch64-linux-gnu.
Could they be merged once stage 1 starts, 
or could it be done even now? 
Thanks!

Regards,
Evgeny

[PATCH v2 00/13] Add aarch64-w64-mingw32 target

[Evgeny Karpov]

Wednesday, March 6, 2024
LIU Hao wrote:

> May I suggest you keep the mcf thread model for aarch-w64-mingw32? I
> requested Martin Storsjö to test it on a physical Windows 11 on ARM machine
> with Clang and all tests passed. I think it should work once the GCC support 
> is
> complete.
> 
> 
> --
> Best regards,
> LIU Hao

The MCF thread model will be added to the aarch64-w64-mingw32 target
in the next patch series. Most probably, this will occur when the
mingw unit tests are integrated into the aarch64-w64-mingw32 target.

Regards,
Evgeny

[PATCH v2 00/13] Add aarch64-w64-mingw32 target

[Evgeny Karpov]

Zac Walker (13):
  Introduce aarch64-w64-mingw32 target
  aarch64: The aarch64-w64-mingw32 target implements the MS ABI
  aarch64: Mark x18 register as a fixed register for MS ABI
  aarch64: Add aarch64-w64-mingw32 COFF
  Reuse MinGW from i386 for AArch64
  Rename section and encoding functions from i386 which will be used in
aarch64
  Exclude i386 functionality from aarch64 build
  aarch64: Add Cygwin and MinGW environments for AArch64
  aarch64: Add SEH to machine_function
  Rename "x86 Windows Options" to "Cygwin and MinGW Options"
  aarch64: Build and add objects for Cygwin and MinGW for AArch64
  aarch64: Add aarch64-w64-mingw32 target to libatomic
  Add aarch64-w64-mingw32 target to libgcc

 fixincludes/mkfixinc.sh   |   3 +-
 gcc/config.gcc|  47 +++--
 gcc/config/aarch64/aarch64-abi-ms.h   |  64 +++
 gcc/config/aarch64/aarch64-coff.h |  91 +
 gcc/config/aarch64/aarch64-opts.h |   7 +
 gcc/config/aarch64/aarch64-protos.h   |   5 +
 gcc/config/aarch64/aarch64.h  |   6 +
 gcc/config/aarch64/cygming.h  | 175 ++
 gcc/config/i386/cygming.h |  18 +-
 gcc/config/i386/cygming.opt.urls  |  30 ---
 gcc/config/i386/i386-protos.h |  12 +-
 gcc/config/i386/mingw-w64.opt.urls|   2 +-
 gcc/config/lynx.opt.urls  |   2 +-
 gcc/config/{i386 => mingw}/cygming.opt|   0
 gcc/config/mingw/cygming.opt.urls |  30 +++
 gcc/config/{i386 => mingw}/cygwin-d.cc|   0
 gcc/config/{i386 => mingw}/mingw-stdint.h |   9 +-
 gcc/config/{i386 => mingw}/mingw.opt  |   0
 gcc/config/{i386 => mingw}/mingw.opt.urls |   2 +-
 gcc/config/{i386 => mingw}/mingw32.h  |   6 +-
 gcc/config/{i386 => mingw}/msformat-c.cc  |   0
 gcc/config/{i386 => mingw}/t-cygming  |  23 ++-
 gcc/config/{i386 => mingw}/winnt-cxx.cc   |   0
 gcc/config/{i386 => mingw}/winnt-d.cc |   0
 gcc/config/{i386 => mingw}/winnt-stubs.cc |   0
 gcc/config/{i386 => mingw}/winnt.cc   |  30 +--
 gcc/doc/invoke.texi   |  12 +-
 gcc/varasm.cc |   2 +-
 libatomic/configure.tgt   |   2 +-
 libgcc/config.host|  23 ++-
 libgcc/config/aarch64/t-no-eh |   2 +
 libgcc/config/{i386 => mingw}/t-gthr-win32|   0
 libgcc/config/{i386 => mingw}/t-mingw-pthread |   0
 33 files changed, 510 insertions(+), 93 deletions(-)
 create mode 100644 gcc/config/aarch64/aarch64-abi-ms.h
 create mode 100644 gcc/config/aarch64/aarch64-coff.h
 create mode 100644 gcc/config/aarch64/cygming.h
 delete mode 100644 gcc/config/i386/cygming.opt.urls
 rename gcc/config/{i386 => mingw}/cygming.opt (100%)
 create mode 100644 gcc/config/mingw/cygming.opt.urls
 rename gcc/config/{i386 => mingw}/cygwin-d.cc (100%)
 rename gcc/config/{i386 => mingw}/mingw-stdint.h (86%)
 rename gcc/config/{i386 => mingw}/mingw.opt (100%)
 rename gcc/config/{i386 => mingw}/mingw.opt.urls (86%)
 rename gcc/config/{i386 => mingw}/mingw32.h (98%)
 rename gcc/config/{i386 => mingw}/msformat-c.cc (100%)
 rename gcc/config/{i386 => mingw}/t-cygming (73%)
 rename gcc/config/{i386 => mingw}/winnt-cxx.cc (100%)
 rename gcc/config/{i386 => mingw}/winnt-d.cc (100%)
 rename gcc/config/{i386 => mingw}/winnt-stubs.cc (100%)
 rename gcc/config/{i386 => mingw}/winnt.cc (97%)
 create mode 100644 libgcc/config/aarch64/t-no-eh
 rename libgcc/config/{i386 => mingw}/t-gthr-win32 (100%)
 rename libgcc/config/{i386 => mingw}/t-mingw-pthread (100%)

[PATCH v2 00/13] Add aarch64-w64-mingw32 target

[Evgeny Karpov]

gcc/ChangeLog:

* config.gcc:
* config/aarch64/aarch64-opts.h (enum aarch64_calling_abi):
* config/aarch64/aarch64-protos.h 
(mingw_pe_maybe_record_exported_symbol):
(mingw_pe_section_type_flags):
(mingw_pe_unique_section):
(mingw_pe_encode_section_info):
* config/aarch64/aarch64.h (struct seh_frame_state):
(GTY):
* config/i386/cygming.h (SUBTARGET_ENCODE_SECTION_INFO):
(TARGET_ASM_UNIQUE_SECTION):
(TARGET_ASM_NAMED_SECTION):
(TARGET_SECTION_TYPE_FLAGS):
(ASM_DECLARE_COLD_FUNCTION_NAME):
(ASM_OUTPUT_EXTERNAL_LIBCALL):
* config/i386/i386-protos.h (i386_pe_unique_section):
(i386_pe_declare_function_type):
(mingw_pe_unique_section):
(mingw_pe_declare_function_type):
(i386_pe_maybe_record_exported_symbol):
(i386_pe_encode_section_info):
(mingw_pe_maybe_record_exported_symbol):
(mingw_pe_encode_section_info):
(i386_pe_section_type_flags):
(i386_pe_asm_named_section):
(mingw_pe_section_type_flags):
(mingw_pe_asm_named_section):
* config/i386/mingw-w64.opt.urls:
* config/lynx.opt.urls:
* config/i386/cygming.opt: Move to...
* config/mingw/cygming.opt: ...here.
* config/i386/cygwin-d.cc: Move to...
* config/mingw/cygwin-d.cc: ...here.
* config/i386/mingw-stdint.h: Move to...
* config/mingw/mingw-stdint.h: ...here.
* config/i386/mingw.opt: Move to...
* config/mingw/mingw.opt: ...here.
* config/i386/mingw.opt.urls: Move to...
* config/mingw/mingw.opt.urls: ...here.
* config/i386/mingw32.h: Move to...
* config/mingw/mingw32.h: ...here.
* config/i386/msformat-c.cc: Move to...
* config/mingw/msformat-c.cc: ...here.
* config/i386/t-cygming: Move to...
* config/mingw/t-cygming: ...here.
* config/i386/winnt-cxx.cc: Move to...
* config/mingw/winnt-cxx.cc: ...here.
* config/i386/winnt-d.cc: Move to...
* config/mingw/winnt-d.cc: ...here.
* config/i386/winnt-stubs.cc: Move to...
* config/mingw/winnt-stubs.cc: ...here.
* config/i386/winnt.cc: Move to...
* config/mingw/winnt.cc: ...here.
* doc/invoke.texi:
* varasm.cc (switch_to_comdat_section):
* config/i386/cygming.opt.urls: Removed.
* config/aarch64/aarch64-abi-ms.h: New file.
* config/aarch64/aarch64-coff.h: New file.
* config/aarch64/cygming.h: New file.
* config/mingw/cygming.opt.urls: New file.

libatomic/ChangeLog:

* configure.tgt:

libgcc/ChangeLog:

* config.host:
* config/i386/t-gthr-win32: Move to...
* config/mingw/t-gthr-win32: ...here.
* config/i386/t-mingw-pthread: Move to...
* config/mingw/t-mingw-pthread: ...here.
* config/aarch64/t-no-eh: New file.

[PATCH v2 13/13] Add aarch64-w64-mingw32 target to libgcc

[Evgeny Karpov]

From: Zac Walker 
Date: Mon, 12 Feb 2024 15:22:47 +0100
Subject: [PATCH v2 13/13] Add aarch64-w64-mingw32 target to libgcc

Reuse MinGW definitions from i386 for libgcc. Move reused files to
libgcc/config/mingw folder.

libgcc/ChangeLog:

* config.host: Add aarch64-w64-mingw32 target. Adjust targets
after moving MinGW files.
* config/i386/t-gthr-win32: Move to...
* config/mingw/t-gthr-win32: ...here.
* config/i386/t-mingw-pthread: Move to...
* config/mingw/t-mingw-pthread: ...here.
* config/aarch64/t-no-eh: New file. EH is not yet implemented for
the target, and the default definition should be disabled.
---
 libgcc/config.host| 23 +++
 libgcc/config/aarch64/t-no-eh |  2 ++
 libgcc/config/{i386 => mingw}/t-gthr-win32|  0
 libgcc/config/{i386 => mingw}/t-mingw-pthread |  0
 4 files changed, 21 insertions(+), 4 deletions(-)
 create mode 100644 libgcc/config/aarch64/t-no-eh
 rename libgcc/config/{i386 => mingw}/t-gthr-win32 (100%)
 rename libgcc/config/{i386 => mingw}/t-mingw-pthread (100%)

diff --git a/libgcc/config.host b/libgcc/config.host
index 59a42d3a01f..3396a84893f 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -456,6 +456,21 @@ aarch64*-*-vxworks7*)
tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm"
tmake_file="${tmake_file} t-dfprules"
;;
+aarch64-*-mingw*)
+   case ${target_thread_file} in
+ win32)
+   tmake_thr_file="mingw/t-gthr-win32"
+   ;;
+ posix)
+   tmake_thr_file="mingw/t-mingw-pthread"
+   ;;
+   esac
+   tmake_file="${tmake_file} ${cpu_type}/t-no-eh ${tmake_thr_file}"
+   tmake_file="${tmake_file} t-dfprules"
+   tmake_file="${tmake_file} ${cpu_type}/t-aarch64"
+   tmake_file="${tmake_file} ${cpu_type}/t-lse"
+   tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm"
+   ;;
 alpha*-*-linux*)
tmake_file="${tmake_file} alpha/t-alpha alpha/t-ieee t-crtfm 
alpha/t-linux"
extra_parts="$extra_parts crtfastmath.o"
@@ -874,10 +889,10 @@ i[34567]86-*-mingw*)
fi
case ${target_thread_file} in
  win32)
-   tmake_thr_file="i386/t-gthr-win32"
+   tmake_thr_file="mingw/t-gthr-win32"
;;
  posix)
-   tmake_thr_file="i386/t-mingw-pthread"
+   tmake_thr_file="mingw/t-mingw-pthread"
;;
  mcf)
tmake_thr_file="i386/t-mingw-mcfgthread"
@@ -901,10 +916,10 @@ i[34567]86-*-mingw*)
 x86_64-*-mingw*)
case ${target_thread_file} in
  win32)
-   tmake_thr_file="i386/t-gthr-win32"
+   tmake_thr_file="mingw/t-gthr-win32"
;;
  posix)
-   tmake_thr_file="i386/t-mingw-pthread"
+   tmake_thr_file="mingw/t-mingw-pthread"
;;
  mcf)
tmake_thr_file="i386/t-mingw-mcfgthread"
diff --git a/libgcc/config/aarch64/t-no-eh b/libgcc/config/aarch64/t-no-eh
new file mode 100644
index 000..1802339a583
--- /dev/null
+++ b/libgcc/config/aarch64/t-no-eh
@@ -0,0 +1,2 @@
+# Not using EH
+LIB2ADDEH =
diff --git a/libgcc/config/i386/t-gthr-win32 b/libgcc/config/mingw/t-gthr-win32
similarity index 100%
rename from libgcc/config/i386/t-gthr-win32
rename to libgcc/config/mingw/t-gthr-win32
diff --git a/libgcc/config/i386/t-mingw-pthread 
b/libgcc/config/mingw/t-mingw-pthread
similarity index 100%
rename from libgcc/config/i386/t-mingw-pthread
rename to libgcc/config/mingw/t-mingw-pthread
-- 
2.25.1

[PATCH v2 12/13] aarch64: Add aarch64-w64-mingw32 target to libatomic

[Evgeny Karpov]

From: Zac Walker 
Date: Fri, 1 Mar 2024 02:23:45 +0100
Subject: [PATCH v2 12/13] aarch64: Add aarch64-w64-mingw32 target to libatomic

libatomic/ChangeLog:

* configure.tgt: Add aarch64-w64-mingw32 target.
---
 libatomic/configure.tgt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libatomic/configure.tgt b/libatomic/configure.tgt
index 4237f283fe4..e49fd57ab41 100644
--- a/libatomic/configure.tgt
+++ b/libatomic/configure.tgt
@@ -44,7 +44,7 @@ case "${target_cpu}" in
   aarch64*)
ARCH=aarch64
case "${target}" in
-   aarch64*-*-linux*)
+   aarch64*-*-linux* | aarch64-*-mingw*)
if test -n "$enable_aarch64_lse"; then
try_ifunc=yes
fi
-- 
2.25.1

[PATCH v2 11/13] aarch64: Build and add objects for Cygwin and MinGW for AArch64

[Evgeny Karpov]

From: Zac Walker 
Date: Tue, 20 Feb 2024 13:55:51 +0100
Subject: [PATCH v2 11/13] aarch64: Build and add objects for Cygwin and MinGW
 for AArch64

gcc/ChangeLog:

* config.gcc: Build and add objects for Cygwin and MinGW. Add Cygwin
and MinGW options to the target.
---
 gcc/config.gcc | 5 +
 1 file changed, 5 insertions(+)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 4471599454b..ed5431b0f5d 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1272,6 +1272,11 @@ aarch64-*-mingw*)
tm_file="${tm_file} mingw/mingw-stdint.h"
tmake_file="${tmake_file} aarch64/t-aarch64"
target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt.cc"
+   extra_options="${extra_options} mingw/cygming.opt mingw/mingw.opt"
+   extra_objs="${extra_objs} winnt.o"
+   c_target_objs="${c_target_objs} msformat-c.o"
+   d_target_objs="${d_target_objs} winnt-d.o"
+   tmake_file="${tmake_file} mingw/t-cygming"
case ${enable_threads} in
  "" | yes | win32)
thread_file='win32'
-- 
2.25.1

[PATCH v2 10/13] Rename "x86 Windows Options" to "Cygwin and MinGW Options"

[Evgeny Karpov]

From: Zac Walker 
Date: Fri, 1 Mar 2024 02:17:39 +0100
Subject: [PATCH v2 10/13] Rename "x86 Windows Options" to "Cygwin and MinGW
 Options"

Rename "x86 Windows Options" to "Cygwin and MinGW Options".
It will be used also for AArch64.

gcc/ChangeLog:

* config/i386/mingw-w64.opt.urls: Rename options' name and
regenerate option URLs.
* config/lynx.opt.urls: Likewise.
* config/mingw/cygming.opt.urls: Likewise.
* config/mingw/mingw.opt.urls: Likewise.
* doc/invoke.texi: Likewise.
---
 gcc/config/i386/mingw-w64.opt.urls |  2 +-
 gcc/config/lynx.opt.urls   |  2 +-
 gcc/config/mingw/cygming.opt.urls  | 18 +-
 gcc/config/mingw/mingw.opt.urls|  2 +-
 gcc/doc/invoke.texi| 12 ++--
 5 files changed, 22 insertions(+), 14 deletions(-)

diff --git a/gcc/config/i386/mingw-w64.opt.urls 
b/gcc/config/i386/mingw-w64.opt.urls
index 6bb53ef29b2..5cceba1d1a1 100644
--- a/gcc/config/i386/mingw-w64.opt.urls
+++ b/gcc/config/i386/mingw-w64.opt.urls
@@ -1,5 +1,5 @@
 ; Autogenerated by regenerate-opt-urls.py from gcc/config/i386/mingw-w64.opt 
and generated HTML
 
 municode
-UrlSuffix(gcc/x86-Windows-Options.html#index-municode)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-municode)
 
diff --git a/gcc/config/lynx.opt.urls b/gcc/config/lynx.opt.urls
index 63e7b9c4b33..b547138f7ff 100644
--- a/gcc/config/lynx.opt.urls
+++ b/gcc/config/lynx.opt.urls
@@ -1,5 +1,5 @@
 ; Autogenerated by regenerate-opt-urls.py from gcc/config/lynx.opt and 
generated HTML
 
 mthreads
-UrlSuffix(gcc/x86-Windows-Options.html#index-mthreads-1)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mthreads-1)
 
diff --git a/gcc/config/mingw/cygming.opt.urls 
b/gcc/config/mingw/cygming.opt.urls
index 87799befe3c..c624e22e442 100644
--- a/gcc/config/mingw/cygming.opt.urls
+++ b/gcc/config/mingw/cygming.opt.urls
@@ -1,30 +1,30 @@
 ; Autogenerated by regenerate-opt-urls.py from gcc/config/i386/cygming.opt and 
generated HTML
 
 mconsole
-UrlSuffix(gcc/x86-Windows-Options.html#index-mconsole)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mconsole)
 
 mdll
-UrlSuffix(gcc/x86-Windows-Options.html#index-mdll)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mdll)
 
 mnop-fun-dllimport
-UrlSuffix(gcc/x86-Windows-Options.html#index-mnop-fun-dllimport)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mnop-fun-dllimport)
 
 ; skipping UrlSuffix for 'mthreads' due to multiple URLs:
+;   duplicate: 'gcc/Cygwin-and-MinGW-Options.html#index-mthreads-1'
 ;   duplicate: 'gcc/x86-Options.html#index-mthreads'
-;   duplicate: 'gcc/x86-Windows-Options.html#index-mthreads-1'
 
 mwin32
-UrlSuffix(gcc/x86-Windows-Options.html#index-mwin32)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mwin32)
 
 mwindows
-UrlSuffix(gcc/x86-Windows-Options.html#index-mwindows)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mwindows)
 
 mpe-aligned-commons
-UrlSuffix(gcc/x86-Windows-Options.html#index-mpe-aligned-commons)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mpe-aligned-commons)
 
 fset-stack-executable
-UrlSuffix(gcc/x86-Windows-Options.html#index-fno-set-stack-executable)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-fno-set-stack-executable)
 
 fwritable-relocated-rdata
-UrlSuffix(gcc/x86-Windows-Options.html#index-fno-writable-relocated-rdata)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-fno-writable-relocated-rdata)
 
diff --git a/gcc/config/mingw/mingw.opt.urls b/gcc/config/mingw/mingw.opt.urls
index 2cbbaadf310..f8ee5be6a53 100644
--- a/gcc/config/mingw/mingw.opt.urls
+++ b/gcc/config/mingw/mingw.opt.urls
@@ -1,7 +1,7 @@
 ; Autogenerated by regenerate-opt-urls.py from gcc/config/i386/mingw.opt and 
generated HTML
 
 mcrtdll=
-UrlSuffix(gcc/x86-Windows-Options.html#index-mcrtdll)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mcrtdll)
 
 ; skipping UrlSuffix for 'pthread' due to multiple URLs:
 ;   duplicate: 'gcc/Link-Options.html#index-pthread-1'
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index bdf05be387d..e2e473e095f 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -1493,6 +1493,8 @@ See RS/6000 and PowerPC Options.
 -munroll-only-small-loops -mlam=@var{choice}}
 
 @emph{x86 Windows Options}
+
+@emph{Cygwin and MinGW Options}
 @gccoptlist{-mconsole  -mcrtdll=@var{library}  -mdll
 -mnop-fun-dllimport  -mthread
 -municode  -mwin32  -mwindows  -fno-set-stack-executable}
@@ -20976,6 +20978,7 @@ platform.
 * C6X Options::
 * CRIS Options::
 * C-SKY Options::
+* Cygwin and MinGW Options::
 * Darwin Options::
 * DEC Alpha Options::
 * eBPF Options::
@@ -36112,8 +36115,13 @@ positions 62:57 can be used for metadata.
 
 @node x86 Windows Options
 @subsection x86 Windows Options
-@cindex x86 Windows Options
-@cindex Windows Options for x86
+
+@xref{Cygwin and MinGW Options}.
+
+@node Cygwin and MinGW Options
+@subsection Cygwin and MinGW Options
+@cindex Cygwin and MinGW Options
+@cindex Options for Cygwin and MinGW
 
 These 

[PATCH v2 09/13] aarch64: Add SEH to machine_function

[Evgeny Karpov]

From: Zac Walker 
Date: Tue, 20 Feb 2024 18:10:08 +0100
Subject: [PATCH v2 09/13] aarch64: Add SEH to machine_function

SEH is not enabled in aarch64-w64-mingw32 target yet. However, it is
needed to be declared in machine_function for reusing winnt.cc.

gcc/ChangeLog:

* config/aarch64/aarch64.h (struct seh_frame_state): Declare SEH
structure in machine_function.
(GTY): Add SEH field.
---
 gcc/config/aarch64/aarch64.h | 6 ++
 1 file changed, 6 insertions(+)

diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h
index 45e901cda64..62cc97aa8c8 100644
--- a/gcc/config/aarch64/aarch64.h
+++ b/gcc/config/aarch64/aarch64.h
@@ -1042,6 +1042,9 @@ struct GTY (()) aarch64_frame
   bool is_scs_enabled;
 };
 
+/* Private to winnt.cc.  */
+struct seh_frame_state;
+
 #ifdef hash_set_h
 typedef struct GTY (()) machine_function
 {
@@ -1082,6 +1085,9 @@ typedef struct GTY (()) machine_function
  still exists and still fulfils its original purpose. the same register
  can be reused by other code.  */
   rtx_insn *advsimd_zero_insn;
+
+  /* During SEH output, this is non-null.  */
+  struct seh_frame_state * GTY ((skip (""))) seh;
 } machine_function;
 #endif
 #endif
-- 
2.25.1

[PATCH v2 08/13] aarch64: Add Cygwin and MinGW environments for AArch64

[Evgeny Karpov]

From: Zac Walker 
Date: Fri, 1 Mar 2024 10:49:28 +0100
Subject: [PATCH v2 08/13] aarch64: Add Cygwin and MinGW environments for
 AArch64

Define Cygwin and MinGW environment such as types, SEH definitions,
shared libraries, etc.

gcc/ChangeLog:

* config.gcc: Add Cygwin and MinGW difinitions.
* config/aarch64/aarch64-protos.h
(mingw_pe_maybe_record_exported_symbol): Declare functions
which are used in Cygwin and MinGW environment.
(mingw_pe_section_type_flags): Likewise.
(mingw_pe_unique_section): Likewise.
(mingw_pe_encode_section_info): Likewise.
* config/aarch64/cygming.h: New file.
---
 gcc/config.gcc  |   4 +
 gcc/config/aarch64/aarch64-protos.h |   5 +
 gcc/config/aarch64/cygming.h| 175 
 3 files changed, 184 insertions(+)
 create mode 100644 gcc/config/aarch64/cygming.h

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 3aca257c322..4471599454b 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1267,7 +1267,11 @@ aarch64*-*-linux*)
 aarch64-*-mingw*)
tm_file="${tm_file} aarch64/aarch64-abi-ms.h"
tm_file="${tm_file} aarch64/aarch64-coff.h"
+   tm_file="${tm_file} aarch64/cygming.h"
+   tm_file="${tm_file} mingw/mingw32.h"
+   tm_file="${tm_file} mingw/mingw-stdint.h"
tmake_file="${tmake_file} aarch64/t-aarch64"
+   target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt.cc"
case ${enable_threads} in
  "" | yes | win32)
thread_file='win32'
diff --git a/gcc/config/aarch64/aarch64-protos.h 
b/gcc/config/aarch64/aarch64-protos.h
index bd719b992a5..759e1a0f9da 100644
--- a/gcc/config/aarch64/aarch64-protos.h
+++ b/gcc/config/aarch64/aarch64-protos.h
@@ -1110,6 +1110,11 @@ extern void aarch64_output_patchable_area (unsigned int, 
bool);
 
 extern void aarch64_adjust_reg_alloc_order ();
 
+extern void mingw_pe_maybe_record_exported_symbol (tree, const char *, int);
+extern unsigned int mingw_pe_section_type_flags (tree, const char *, int);
+extern void mingw_pe_unique_section (tree, int);
+extern void mingw_pe_encode_section_info (tree, rtx, int);
+
 bool aarch64_optimize_mode_switching (aarch64_mode_entity);
 void aarch64_restore_za (rtx);
 
diff --git a/gcc/config/aarch64/cygming.h b/gcc/config/aarch64/cygming.h
new file mode 100644
index 000..2f239c42a89
--- /dev/null
+++ b/gcc/config/aarch64/cygming.h
@@ -0,0 +1,175 @@
+/* Operating system specific defines to be used when targeting GCC for
+   hosting on Windows32, using a Unix style C library and tools.
+   Copyright (C) 1995-2024 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+.  */
+
+#ifndef GCC_AARCH64_CYGMING_H
+#define GCC_AARCH64_CYGMING_H
+
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE DINFO_TYPE_NONE
+
+#define FASTCALL_PREFIX '@'
+
+#define print_reg(rtx, code, file)
+
+#define SYMBOL_FLAG_DLLIMPORT 0
+#define SYMBOL_FLAG_DLLEXPORT 0
+
+#define SYMBOL_REF_DLLEXPORT_P(X) \
+   ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_DLLEXPORT) != 0)
+
+/* Disable SEH and declare the required SEH-related macros that are
+still needed for compilation.  */
+#undef TARGET_SEH
+#define TARGET_SEH 0
+
+#define SSE_REGNO_P(N) 0
+#define GENERAL_REGNO_P(N) 0
+#define SEH_MAX_FRAME_SIZE 0
+
+#undef DEFAULT_ABI
+#define DEFAULT_ABI AARCH64_CALLING_ABI_MS
+
+#undef TARGET_PECOFF
+#define TARGET_PECOFF 1
+
+#include 
+#ifdef __MINGW32__
+#include 
+#endif
+
+extern void mingw_pe_asm_named_section (const char *, unsigned int, tree);
+extern void mingw_pe_declare_function_type (FILE *file, const char *name,
+   int pub);
+
+#define TARGET_ASM_NAMED_SECTION  mingw_pe_asm_named_section
+
+/* Select attributes for named sections.  */
+#define TARGET_SECTION_TYPE_FLAGS  mingw_pe_section_type_flags
+
+#define TARGET_ASM_UNIQUE_SECTION mingw_pe_unique_section
+#define TARGET_ENCODE_SECTION_INFO  mingw_pe_encode_section_info
+
+/* Declare the type properly for any external libcall.  */
+#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
+  mingw_pe_declare_function_type (FILE, XSTR (FUN, 0), 1)
+
+#define TARGET_OS_CPP_BUILTINS()   \
+  do   \
+{  \
+  builtin_define 

[PATCH v2 07/13] Exclude i386 functionality from aarch64 build

[Evgeny Karpov]

From: Zac Walker 
Date: Fri, 1 Mar 2024 02:35:40 +0100
Subject: [PATCH v2 07/13] Exclude i386 functionality from aarch64 build

This patch defines TARGET_AARCH64_MS_ABI in config.gcc and uses it to
exclude i386 functionality from aarch64 build and adjust MinGW headers
for AArch64 MS ABI.

gcc/ChangeLog:

* config.gcc: Define TARGET_AARCH64_MS_ABI.
* config/mingw/mingw-stdint.h (INTPTR_TYPE): Use
TARGET_AARCH64_MS_ABI to adjust MinGW headers for
AArch64 MS ABI.
(UINTPTR_TYPE): Likewise.
(defined): Likewise.
* config/mingw/mingw32.h (DEFAULT_ABI): Likewise.
(defined): Likewise.
* config/mingw/winnt.cc (defined): Use TARGET_ARM64_MS_ABI to
exclude ix86_get_callcvt.
(i386_pe_maybe_mangle_decl_assembler_name): Likewise.
(i386_pe_mangle_decl_assembler_name): Likewise.
---
 gcc/config.gcc  | 1 +
 gcc/config/mingw/mingw-stdint.h | 9 +++--
 gcc/config/mingw/mingw32.h  | 6 +-
 gcc/config/mingw/winnt.cc   | 8 
 4 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 26564ead079..3aca257c322 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1278,6 +1278,7 @@ aarch64-*-mingw*)
esac
default_use_cxa_atexit=yes
user_headers_inc_next_post="${user_headers_inc_next_post} float.h"
+   tm_defines="${tm_defines} TARGET_AARCH64_MS_ABI=1"
;;
 aarch64*-wrs-vxworks*)
 tm_file="${tm_file} elfos.h aarch64/aarch64-elf.h"
diff --git a/gcc/config/mingw/mingw-stdint.h b/gcc/config/mingw/mingw-stdint.h
index c0feade76e9..debbe829bdf 100644
--- a/gcc/config/mingw/mingw-stdint.h
+++ b/gcc/config/mingw/mingw-stdint.h
@@ -46,5 +46,10 @@ along with GCC; see the file COPYING3.  If not see
 #define UINT_FAST32_TYPE "unsigned int"
 #define UINT_FAST64_TYPE "long long unsigned int"
 
-#define INTPTR_TYPE (TARGET_64BIT ? "long long int" : "int")
-#define UINTPTR_TYPE (TARGET_64BIT ? "long long unsigned int" : "unsigned int")
+#if defined (TARGET_AARCH64_MS_ABI)
+# define INTPTR_TYPE "long long int"
+# define UINTPTR_TYPE "long long unsigned int"
+#else
+# define INTPTR_TYPE (TARGET_64BIT ? "long long int" : "int")
+# define UINTPTR_TYPE (TARGET_64BIT ? "long long unsigned int" : "unsigned 
int")
+#endif
\ No newline at end of file
diff --git a/gcc/config/mingw/mingw32.h b/gcc/config/mingw/mingw32.h
index 58304fc55f6..040c3e1e521 100644
--- a/gcc/config/mingw/mingw32.h
+++ b/gcc/config/mingw/mingw32.h
@@ -19,7 +19,11 @@ along with GCC; see the file COPYING3.  If not see
 .  */
 
 #undef DEFAULT_ABI
-#define DEFAULT_ABI MS_ABI
+#if defined (TARGET_AARCH64_MS_ABI)
+# define DEFAULT_ABI AARCH64_CALLING_ABI_MS
+#else
+# define DEFAULT_ABI MS_ABI
+#endif
 
 /* By default, target has a 80387, uses IEEE compatible arithmetic,
returns float values in the 387 and needs stack probes.
diff --git a/gcc/config/mingw/winnt.cc b/gcc/config/mingw/winnt.cc
index 1ed383155d0..2a4fc03fc56 100644
--- a/gcc/config/mingw/winnt.cc
+++ b/gcc/config/mingw/winnt.cc
@@ -224,6 +224,8 @@ gen_stdcall_or_fastcall_suffix (tree decl, tree id, bool 
fastcall)
   return get_identifier (new_str);
 }
 
+#if !defined (TARGET_AARCH64_MS_ABI)
+
 /* Maybe decorate and get a new identifier for the DECL of a stdcall or
fastcall function. The original identifier is supplied in ID. */
 
@@ -250,6 +252,8 @@ i386_pe_maybe_mangle_decl_assembler_name (tree decl, tree 
id)
   return new_id;
 }
 
+#endif
+
 /* Emit an assembler directive to set symbol for DECL visibility to
the visibility type VIS, which must not be VISIBILITY_DEFAULT.
As for PE there is no hidden support in gas, we just warn for
@@ -266,6 +270,8 @@ i386_pe_assemble_visibility (tree decl, int)
  "in this configuration; ignored");
 }
 
+#if !defined (TARGET_AARCH64_MS_ABI)
+
 /* This is used as a target hook to modify the DECL_ASSEMBLER_NAME
in the language-independent default hook
langhooks,c:lhd_set_decl_assembler_name ()
@@ -278,6 +284,8 @@ i386_pe_mangle_decl_assembler_name (tree decl, tree id)
   return (new_id ? new_id : id);
 }
 
+#endif
+
 /* This hook behaves the same as varasm.cc/assemble_name(), but
generates the name into memory rather than outputting it to
a file stream.  */
-- 
2.25.1

[PATCH v2 05/13] Reuse MinGW from i386 for AArch64

[Evgeny Karpov]

From: Zac Walker 
Date: Fri, 1 Mar 2024 02:41:50 +0100
Subject: [PATCH v2 05/13] Reuse MinGW from i386 for AArch64

This patch creates a new config/mingw directory to share MinGW
related definitions, and moves there the corresponding existing files
from config/i386.

gcc/ChangeLog:

* config.gcc: Adjust targets after moving MinGW related files
from i386 to mingw folder.
* config/i386/cygming.opt: Move to...
* config/mingw/cygming.opt: ...here.
* config/i386/cygming.opt.urls: Move to...
* config/mingw/cygming.opt.urls: ...here.
* config/i386/cygwin-d.cc: Move to...
* config/mingw/cygwin-d.cc: ...here.
* config/i386/mingw-stdint.h: Move to...
* config/mingw/mingw-stdint.h: ...here.
* config/i386/mingw.opt: Move to...
* config/mingw/mingw.opt: ...here.
* config/i386/mingw.opt.urls: Move to...
* config/mingw/mingw.opt.urls: ...here.
* config/i386/mingw32.h: Move to...
* config/mingw/mingw32.h: ...here.
* config/i386/msformat-c.cc: Move to...
* config/mingw/msformat-c.cc: ...here.
* config/i386/t-cygming: Move to...
* config/mingw/t-cygming: ...here and updated.
* config/i386/winnt-cxx.cc: Move to...
* config/mingw/winnt-cxx.cc: ...here.
* config/i386/winnt-d.cc: Move to...
* config/mingw/winnt-d.cc: ...here.
* config/i386/winnt-stubs.cc: Move to...
* config/mingw/winnt-stubs.cc: ...here.
* config/i386/winnt.cc: Move to...
* config/mingw/winnt.cc: ...here.
---
 gcc/config.gcc  | 22 ++--
 gcc/config/{i386 => mingw}/cygming.opt  |  0
 gcc/config/{i386 => mingw}/cygming.opt.urls |  0
 gcc/config/{i386 => mingw}/cygwin-d.cc  |  0
 gcc/config/{i386 => mingw}/mingw-stdint.h   |  0
 gcc/config/{i386 => mingw}/mingw.opt|  0
 gcc/config/{i386 => mingw}/mingw.opt.urls   |  0
 gcc/config/{i386 => mingw}/mingw32.h|  0
 gcc/config/{i386 => mingw}/msformat-c.cc|  0
 gcc/config/{i386 => mingw}/t-cygming| 23 -
 gcc/config/{i386 => mingw}/winnt-cxx.cc |  0
 gcc/config/{i386 => mingw}/winnt-d.cc   |  0
 gcc/config/{i386 => mingw}/winnt-stubs.cc   |  0
 gcc/config/{i386 => mingw}/winnt.cc |  0
 14 files changed, 24 insertions(+), 21 deletions(-)
 rename gcc/config/{i386 => mingw}/cygming.opt (100%)
 rename gcc/config/{i386 => mingw}/cygming.opt.urls (100%)
 rename gcc/config/{i386 => mingw}/cygwin-d.cc (100%)
 rename gcc/config/{i386 => mingw}/mingw-stdint.h (100%)
 rename gcc/config/{i386 => mingw}/mingw.opt (100%)
 rename gcc/config/{i386 => mingw}/mingw.opt.urls (100%)
 rename gcc/config/{i386 => mingw}/mingw32.h (100%)
 rename gcc/config/{i386 => mingw}/msformat-c.cc (100%)
 rename gcc/config/{i386 => mingw}/t-cygming (73%)
 rename gcc/config/{i386 => mingw}/winnt-cxx.cc (100%)
 rename gcc/config/{i386 => mingw}/winnt-d.cc (100%)
 rename gcc/config/{i386 => mingw}/winnt-stubs.cc (100%)
 rename gcc/config/{i386 => mingw}/winnt.cc (100%)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index cb6661f44ef..26564ead079 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -2161,9 +2161,9 @@ i[4567]86-wrs-vxworks*|x86_64-wrs-vxworks7*)
 i[34567]86-*-cygwin*)
tm_file="${tm_file} i386/unix.h i386/bsd.h i386/gas.h i386/cygming.h 
i386/cygwin.h i386/cygwin-stdint.h"
xm_file=i386/xm-cygwin.h
-   tmake_file="${tmake_file} i386/t-cygming t-slibgcc"
-   target_gtfiles="$target_gtfiles \$(srcdir)/config/i386/winnt.cc"
-   extra_options="${extra_options} i386/cygming.opt i386/cygwin.opt"
+   tmake_file="${tmake_file} mingw/t-cygming t-slibgcc"
+   target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt.cc"
+   extra_options="${extra_options} mingw/cygming.opt i386/cygwin.opt"
extra_objs="${extra_objs} winnt.o winnt-stubs.o"
c_target_objs="${c_target_objs} msformat-c.o"
cxx_target_objs="${cxx_target_objs} winnt-cxx.o msformat-c.o"
@@ -2179,9 +2179,9 @@ x86_64-*-cygwin*)
need_64bit_isa=yes
tm_file="${tm_file} i386/unix.h i386/bsd.h i386/gas.h i386/cygming.h 
i386/cygwin.h i386/cygwin-w64.h i386/cygwin-stdint.h"
xm_file=i386/xm-cygwin.h
-   tmake_file="${tmake_file} i386/t-cygming t-slibgcc"
-   target_gtfiles="$target_gtfiles \$(srcdir)/config/i386/winnt.cc"
-   extra_options="${extra_options} i386/cygming.opt i386/cygwin.opt"
+   tmake_file="${tmake_file} mingw/t-cygming t-slibgcc"
+   target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt.cc"
+   extra_options="${extra_options} mingw/cygming.opt i386/cygwin.opt"
extra_objs="${extra_objs} winnt.o winnt-stubs.o"
c_target_objs="${c_target_objs} msformat-c.o"
cxx_target_objs="${cxx_target_objs} winnt-cxx.o msformat-c.o"
@@ -2217,7 +2217,7 @@ i[34567]86-*-mingw* | x86_64-*-mingw*)
if test x$enable_threads = xmcf 

[PATCH v2 06/13] Rename section and encoding functions from i386 which will be used in aarch64

[Evgeny Karpov]

From: Zac Walker 
Date: Tue, 20 Feb 2024 17:22:31 +0100
Subject: [PATCH v2 06/13] Rename section and encoding functions from i386
 which will be used in aarch64

gcc/ChangeLog:

* config/i386/cygming.h (SUBTARGET_ENCODE_SECTION_INFO):
Rename functions in mingw folder which will be reused for
aarch64.
(TARGET_ASM_UNIQUE_SECTION): Likewise.
(TARGET_ASM_NAMED_SECTION): Likewise.
(TARGET_SECTION_TYPE_FLAGS): Likewise.
(ASM_DECLARE_COLD_FUNCTION_NAME): Likewise.
(ASM_OUTPUT_EXTERNAL_LIBCALL): Likewise.
* config/i386/i386-protos.h (i386_pe_unique_section):
Rename into ...
(mingw_pe_unique_section): ... this.
(i386_pe_declare_function_type): Rename into ...
(mingw_pe_declare_function_type): ... this.
(i386_pe_encode_section_info): Rename into ...
(mingw_pe_encode_section_info): ... this.
(i386_pe_maybe_record_exported_symbol): Rename into ...
(mingw_pe_maybe_record_exported_symbol): ... this.
(i386_pe_section_type_flags): Rename into ...
(mingw_pe_section_type_flags): ... this.
(i386_pe_asm_named_section): Rename into ...
(mingw_pe_asm_named_section): ... this.
* config/mingw/winnt.cc (i386_pe_encode_section_info):
Rename into ...
(mingw_pe_encode_section_info): ... this.
(i386_pe_unique_section): Rename into ...
(mingw_pe_unique_section): ... this.
(i386_pe_section_type_flags): Rename into ...
(mingw_pe_section_type_flags): ... this.
(i386_pe_asm_named_section): Rename into ...
(mingw_pe_asm_named_section): ... this.
(i386_pe_asm_output_aligned_decl_common): Likewise.
(i386_pe_declare_function_type): Rename into ...
(mingw_pe_declare_function_type): ... this.
(i386_pe_maybe_record_exported_symbol): Rename into ...
(mingw_pe_maybe_record_exported_symbol): ... this.
(i386_pe_start_function): Likewise.
* varasm.cc (switch_to_comdat_section): Likewise.
---
 gcc/config/i386/cygming.h | 18 +-
 gcc/config/i386/i386-protos.h | 12 ++--
 gcc/config/mingw/winnt.cc | 22 +++---
 gcc/varasm.cc |  2 +-
 4 files changed, 27 insertions(+), 27 deletions(-)

diff --git a/gcc/config/i386/cygming.h b/gcc/config/i386/cygming.h
index 1af5bc380a5..beedf7c398a 100644
--- a/gcc/config/i386/cygming.h
+++ b/gcc/config/i386/cygming.h
@@ -219,7 +219,7 @@ do {
\
section and we need to set DECL_SECTION_NAME so we do that here.
Note that we can be called twice on the same decl.  */
 
-#define SUBTARGET_ENCODE_SECTION_INFO  i386_pe_encode_section_info
+#define SUBTARGET_ENCODE_SECTION_INFO  mingw_pe_encode_section_info
 
 /* Local and global relocs can be placed always into readonly memory
for PE-COFF targets.  */
@@ -235,7 +235,7 @@ do {
\
 #undef ASM_DECLARE_OBJECT_NAME
 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL)\
 do {   \
-  i386_pe_maybe_record_exported_symbol (DECL, NAME, 1);\
+  mingw_pe_maybe_record_exported_symbol (DECL, NAME, 1);   \
   ASM_OUTPUT_LABEL ((STREAM), (NAME)); \
 } while (0)
 
@@ -283,16 +283,16 @@ do {  \
 /* Windows uses explicit import from shared libraries.  */
 #define MULTIPLE_SYMBOL_SPACES 1
 
-#define TARGET_ASM_UNIQUE_SECTION i386_pe_unique_section
+#define TARGET_ASM_UNIQUE_SECTION mingw_pe_unique_section
 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
 
 #define SUPPORTS_ONE_ONLY 1
 
 /* Switch into a generic section.  */
-#define TARGET_ASM_NAMED_SECTION  i386_pe_asm_named_section
+#define TARGET_ASM_NAMED_SECTION  mingw_pe_asm_named_section
 
 /* Select attributes for named sections.  */
-#define TARGET_SECTION_TYPE_FLAGS  i386_pe_section_type_flags
+#define TARGET_SECTION_TYPE_FLAGS  mingw_pe_section_type_flags
 
 /* Write the extra assembler code needed to declare a function
properly.  */
@@ -307,7 +307,7 @@ do {\
 #define ASM_DECLARE_COLD_FUNCTION_NAME(FILE, NAME, DECL)   \
   do   \
 {  \
-  i386_pe_declare_function_type (FILE, NAME, 0);   \
+  mingw_pe_declare_function_type (FILE, NAME, 0);  \
   i386_pe_seh_cold_init (FILE, NAME);  \
   ASM_OUTPUT_LABEL (FILE, NAME);   \
 }  \
@@ -333,7 +333,7 @@ do {\
 
 /* Declare the type properly for any external libcall.  */
 #define 

[PATCH v2 04/13] aarch64: Add aarch64-w64-mingw32 COFF

[Evgeny Karpov]

From: Zac Walker 
Date: Fri, 1 Mar 2024 01:55:47 +0100
Subject: [PATCH v2 04/13] aarch64: Add aarch64-w64-mingw32 COFF

Define ASM specific for COFF format on AArch64.

gcc/ChangeLog:

* config.gcc: Add COFF format support definitions.
* config/aarch64/aarch64-coff.h: New file.
---
 gcc/config.gcc|  1 +
 gcc/config/aarch64/aarch64-coff.h | 91 +++
 2 files changed, 92 insertions(+)
 create mode 100644 gcc/config/aarch64/aarch64-coff.h

diff --git a/gcc/config.gcc b/gcc/config.gcc
index b762393b64c..cb6661f44ef 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1266,6 +1266,7 @@ aarch64*-*-linux*)
;;
 aarch64-*-mingw*)
tm_file="${tm_file} aarch64/aarch64-abi-ms.h"
+   tm_file="${tm_file} aarch64/aarch64-coff.h"
tmake_file="${tmake_file} aarch64/t-aarch64"
case ${enable_threads} in
  "" | yes | win32)
diff --git a/gcc/config/aarch64/aarch64-coff.h 
b/gcc/config/aarch64/aarch64-coff.h
new file mode 100644
index 000..79c5a43b970
--- /dev/null
+++ b/gcc/config/aarch64/aarch64-coff.h
@@ -0,0 +1,91 @@
+/* Machine description for AArch64 architecture.
+   Copyright (C) 2024 Free Software Foundation, Inc.
+
+   This file is part of GCC.
+
+   GCC is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   GCC is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GCC; see the file COPYING3.  If not see
+   .  */
+
+#ifndef GCC_AARCH64_COFF_H
+#define GCC_AARCH64_COFF_H
+
+#include "aarch64.h"
+
+#ifndef LOCAL_LABEL_PREFIX
+# define LOCAL_LABEL_PREFIX""
+#endif
+
+/* Using long long breaks -ansi and -std=c90, so these will need to be
+   made conditional for an LLP64 ABI.  */
+#undef SIZE_TYPE
+#define SIZE_TYPE  "long long unsigned int"
+
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE   "long long int"
+
+#undef LONG_TYPE_SIZE
+#define LONG_TYPE_SIZE 32
+
+#ifndef ASM_GENERATE_INTERNAL_LABEL
+# define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)  \
+  sprintf (STRING, "*%s%s%u", LOCAL_LABEL_PREFIX, PREFIX, (unsigned int)(NUM))
+#endif
+
+#define ASM_OUTPUT_ALIGN(STREAM, POWER)\
+  fprintf (STREAM, "\t.align\t%d\n", (int)POWER)
+
+/* Output a common block.  */
+#ifndef ASM_OUTPUT_COMMON
+# define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)\
+{  \
+  fprintf (STREAM, "\t.comm\t");   \
+  assemble_name (STREAM, NAME);\
+  asm_fprintf (STREAM, ", %d, %d\n",   \
+  (int)(ROUNDED), (int)(SIZE));\
+}
+#endif
+
+/* Output a local common block.  /bin/as can't do this, so hack a
+   `.space' into the bss segment.  Note that this is *bad* practice,
+   which is guaranteed NOT to work since it doesn't define STATIC
+   COMMON space but merely STATIC BSS space.  */
+#ifndef ASM_OUTPUT_ALIGNED_LOCAL
+# define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN)   \
+{  \
+  switch_to_section (bss_section); \
+  ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT));   \
+  ASM_OUTPUT_LABEL (STREAM, NAME); \
+  fprintf (STREAM, "\t.space\t%d\n", (int)(SIZE)); \
+}
+#endif
+
+#define ASM_OUTPUT_SKIP(STREAM, NBYTES)\
+  fprintf (STREAM, "\t.space\t%d  // skip\n", (int) (NBYTES))
+
+#define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE)
+#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)
+
+#define TEXT_SECTION_ASM_OP"\t.text"
+#define DATA_SECTION_ASM_OP"\t.data"
+#define BSS_SECTION_ASM_OP "\t.bss"
+
+#define CTORS_SECTION_ASM_OP   "\t.section\t.ctors, \"aw\""
+#define DTORS_SECTION_ASM_OP   "\t.section\t.dtors, \"aw\""
+
+#define GLOBAL_ASM_OP "\t.global\t"
+
+#undef SUPPORTS_INIT_PRIORITY
+#define SUPPORTS_INIT_PRIORITY 0
+
+#endif
-- 
2.25.1

[PATCH v2 03/13] aarch64: Mark x18 register as a fixed register for MS ABI

[Evgeny Karpov]

From: Zac Walker 
Date: Fri, 1 Mar 2024 09:56:59 +0100
Subject: [PATCH v2 03/13] aarch64: Mark x18 register as a fixed register for
 MS ABI

Define the MS ABI for aarch64-w64-mingw32.
Adjust FIXED_REGISTERS, CALL_REALLY_USED_REGISTERS and
STATIC_CHAIN_REGNUM for AArch64 MS ABI.
The X18 register is reserved on Windows for the TEB.

gcc/ChangeLog:

* config.gcc: Define TARGET_AARCH64_MS_ABI when
AArch64 MS ABI is used.
* config/aarch64/aarch64-abi-ms.h: New file. Adjust
FIXED_REGISTERS, CALL_REALLY_USED_REGISTERS and
STATIC_CHAIN_REGNUM for AArch64 MS ABI.
---
 gcc/config.gcc  |  1 +
 gcc/config/aarch64/aarch64-abi-ms.h | 64 +
 2 files changed, 65 insertions(+)
 create mode 100644 gcc/config/aarch64/aarch64-abi-ms.h

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 2756377e50b..b762393b64c 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1265,6 +1265,7 @@ aarch64*-*-linux*)
TM_MULTILIB_CONFIG=`echo $TM_MULTILIB_CONFIG | sed 's/^,//'`
;;
 aarch64-*-mingw*)
+   tm_file="${tm_file} aarch64/aarch64-abi-ms.h"
tmake_file="${tmake_file} aarch64/t-aarch64"
case ${enable_threads} in
  "" | yes | win32)
diff --git a/gcc/config/aarch64/aarch64-abi-ms.h 
b/gcc/config/aarch64/aarch64-abi-ms.h
new file mode 100644
index 000..90b0dcc5edf
--- /dev/null
+++ b/gcc/config/aarch64/aarch64-abi-ms.h
@@ -0,0 +1,64 @@
+/* Machine description for AArch64 MS ABI.
+   Copyright (C) 2024 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+.  */
+
+#ifndef GCC_AARCH64_ABI_MS_H
+#define GCC_AARCH64_ABI_MS_H
+
+/* X18 reserved for the TEB on Windows.  */
+
+#undef FIXED_REGISTERS
+#define FIXED_REGISTERS\
+  {\
+0, 0, 0, 0,   0, 0, 0, 0,  /* R0 - R7.  */ \
+0, 0, 0, 0,   0, 0, 0, 0,  /* R8 - R15.  */\
+0, 0, 1, 0,   0, 0, 0, 0,  /* R16 - R23.  */   \
+0, 0, 0, 0,   0, 1, 0, 1,  /* R24 - R30, SP.  */   \
+0, 0, 0, 0,   0, 0, 0, 0,  /* V0 - V7.  */ \
+0, 0, 0, 0,   0, 0, 0, 0,   /* V8 - V15.  */   \
+0, 0, 0, 0,   0, 0, 0, 0,   /* V16 - V23.  */  \
+0, 0, 0, 0,   0, 0, 0, 0,   /* V24 - V31.  */  \
+1, 1, 1, 1,/* SFP, AP, CC, VG.  */ \
+0, 0, 0, 0,   0, 0, 0, 0,  /* P0 - P7.  */ \
+0, 0, 0, 0,   0, 0, 0, 0,   /* P8 - P15.  */   \
+1, 1,  /* FFR and FFRT.  */\
+1, 1, 1, 1, 1, 1, 1, 1 /* Fake registers.  */  \
+  }
+
+#undef CALL_REALLY_USED_REGISTERS
+#define CALL_REALLY_USED_REGISTERS \
+  {\
+1, 1, 1, 1,   1, 1, 1, 1,  /* R0 - R7.  */ \
+1, 1, 1, 1,   1, 1, 1, 1,  /* R8 - R15.  */\
+1, 1, 0, 0,   0, 0, 0, 0,   /* R16 - R23.  */  \
+0, 0, 0, 0,   0, 1, 1, 1,  /* R24 - R30, SP.  */   \
+1, 1, 1, 1,   1, 1, 1, 1,  /* V0 - V7.  */ \
+0, 0, 0, 0,   0, 0, 0, 0,  /* V8 - V15.  */\
+1, 1, 1, 1,   1, 1, 1, 1,   /* V16 - V23.  */  \
+1, 1, 1, 1,   1, 1, 1, 1,   /* V24 - V31.  */  \
+1, 1, 1, 0,/* SFP, AP, CC, VG.  */ \
+1, 1, 1, 1,   1, 1, 1, 1,  /* P0 - P7.  */ \
+1, 1, 1, 1,   1, 1, 1, 1,  /* P8 - P15.  */\
+1, 1,  /* FFR and FFRT.  */\
+0, 0, 0, 0, 0, 0, 0, 0 /* Fake registers.  */  \
+  }
+
+#undef  STATIC_CHAIN_REGNUM
+#define STATIC_CHAIN_REGNUM R17_REGNUM
+
+#endif /* GCC_AARCH64_ABI_MS_H.  */
-- 
2.25.1

[PATCH v2 02/13] aarch64: The aarch64-w64-mingw32 target implements

[Evgeny Karpov]

From: Zac Walker 
Date: Fri, 1 Mar 2024 01:45:13 +0100
Subject: [PATCH v2 02/13] aarch64: The aarch64-w64-mingw32 target implements
 the MS ABI

Two ABIs for aarch64 have been defined for different platforms.

gcc/ChangeLog:

* config/aarch64/aarch64-opts.h (enum aarch64_calling_abi):
Define two ABIs.
---
 gcc/config/aarch64/aarch64-opts.h | 7 +++
 1 file changed, 7 insertions(+)

diff --git a/gcc/config/aarch64/aarch64-opts.h 
b/gcc/config/aarch64/aarch64-opts.h
index a05c0d3ded1..52c9e4596d6 100644
--- a/gcc/config/aarch64/aarch64-opts.h
+++ b/gcc/config/aarch64/aarch64-opts.h
@@ -131,4 +131,11 @@ enum aarch64_early_ra_scope {
   AARCH64_EARLY_RA_NONE
 };
 
+/* Available call ABIs.  */
+enum aarch64_calling_abi
+{
+  AARCH64_CALLING_ABI_EABI,
+  AARCH64_CALLING_ABI_MS
+};
+
 #endif
-- 
2.25.1

[PATCH v2 01/13] Introduce aarch64-w64-mingw32 target

[Evgeny Karpov]

>From 38efaf5ab1fa017622d10239fff2ca23d2d3fb82 Mon Sep 17 00:00:00 2001
From: Zac Walker 
Date: Fri, 1 Mar 2024 01:40:53 +0100
Subject: [PATCH v2 01/13] Introduce aarch64-w64-mingw32 target

Add the initial aarch64-w64-mingw32 target for gcc.

fixincludes/ChangeLog:

* mkfixinc.sh: Extend for *-mingw32* targets.

gcc/ChangeLog:

* config.gcc: Add aarch64-w64-mingw32 target.
---
 fixincludes/mkfixinc.sh |  3 +--
 gcc/config.gcc  | 13 +
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/fixincludes/mkfixinc.sh b/fixincludes/mkfixinc.sh
index df90720b716..7112f4dcd64 100755
--- a/fixincludes/mkfixinc.sh
+++ b/fixincludes/mkfixinc.sh
@@ -12,8 +12,7 @@ target=fixinc.sh
 # Check for special fix rules for particular targets
 case $machine in
 i?86-*-cygwin* | \
-i?86-*-mingw32* | \
-x86_64-*-mingw32* | \
+*-mingw32* | \
 powerpc-*-eabisim* | \
 powerpc-*-eabi*| \
 powerpc-*-rtems*   | \
diff --git a/gcc/config.gcc b/gcc/config.gcc
index a1480b72c46..2756377e50b 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1264,6 +1264,19 @@ aarch64*-*-linux*)
done
TM_MULTILIB_CONFIG=`echo $TM_MULTILIB_CONFIG | sed 's/^,//'`
;;
+aarch64-*-mingw*)
+   tmake_file="${tmake_file} aarch64/t-aarch64"
+   case ${enable_threads} in
+ "" | yes | win32)
+   thread_file='win32'
+   ;;
+ posix)
+   thread_file='posix'
+   ;;
+   esac
+   default_use_cxa_atexit=yes
+   user_headers_inc_next_post="${user_headers_inc_next_post} float.h"
+   ;;
 aarch64*-wrs-vxworks*)
 tm_file="${tm_file} elfos.h aarch64/aarch64-elf.h"
 tm_file="${tm_file} vx-common.h vxworks.h aarch64/aarch64-vxworks.h"
-- 
2.25.1

[PATCH v2 00/13] Add aarch64-w64-mingw32 target

[Evgeny Karpov]

Hello,

v2 is ready for the review!
Based on the v1 review: 
https://gcc.gnu.org/pipermail/gcc-patches/2024-February/thread.html#646203

Testing for the x86_64-w64-mingw32 target is in progress to avoid
regression due to refactoring.

Regards,
Evgeny


Changes from v1 to v2:
Adjust the target name to aarch64-*-mingw* to exclude the big-endian
target from support.
Exclude 64-bit ISA.
Rename enum calling_abi to aarch64_calling_abi.
Move AArch64 MS ABI definitions FIXED_REGISTERS,
CALL_REALLY_USED_REGISTERS, and STATIC_CHAIN_REGNUM from aarch64.h 
to aarch64-abi-ms.h.
Rename TARGET_ARM64_MS_ABI to TARGET_AARCH64_MS_ABI.
Exclude TARGET_64BIT from the aarch64 target.
Exclude HAVE_GAS_WEAK.
Set HAVE_GAS_ALIGNED_COMM to 1 by default.
Use a reference from "x86 Windows Options" to 
"Cygwin and MinGW Options".
Update commit descriptions to follow standard style.
Rebase from 4th March 2024.

[PATCH v1 00/13] Add aarch64-w64-mingw32 target

[Evgeny Karpov]

Thank you for the initial review for v1!

Work on refactoring, rebasing, and validating 
"[PATCH v2] Add aarch64-w64-mingw32 target" is in progress. 
The v2 x64 mingw target will also be fully tested to avoid
regression due to refactoring.
Please provide feedback if anything is missing.

Changes from v1 to v2:
Adjust the target name to aarch64-*-mingw* to exclude the 
big-endian target from support.
Exclude 64-bit ISA.
Rename enum calling_abi to aarch64_calling_abi.
Move AARCH64 MS ABI definitions FIXED_REGISTERS, 
CALL_REALLY_USED_REGISTERS, and STATIC_CHAIN_REGNUM from 
aarch64.h to aarch64-abi-ms.h.
Rename TARGET_ARM64_MS_ABI to TARGET_AARCH64_MS_ABI.
Exclude TARGET_64BIT from the aarch64 target.
Exclude HAVE_GAS_WEAK.
Set HAVE_GAS_ALIGNED_COMM to 1 by default.
Use a reference from "x86 Windows Options" to "Cygwin and MinGW Options".
Update commit descriptions to follow standard style.


Regards,
Evgeny

[PATCH v1 08/13] aarch64: Add Cygwin and MinGW environments for AArch64

[Evgeny Karpov]

Thursday, February 29, 2024 6:56 PM
Andrew Pinski (QUIC) wrote:

> Looking at these results, this port is not in any shape or form to be 
> upstreamed
> right now. Even simple -g will cause failures.
> Note we don't need a clean testsuite run but the patch series is not even
> allowing enabling hello world due to the -g not being able to used.
> 
> Thanks,
> Amdrew Pinski

For now, our contribution plan contains 4 patch series.

1. Minimal aarch64-w64-mingw32 C implementation to cross-compile
hello-world with libgcc for Windows Arm64 using MinGW.
2. Extension of the aarch64-w64-mingw32 C implementation to
cross-compile OpenSSL, OpenBLAS, FFmpeg, and libjpeg-turbo. All
packages successfully pass tests.
3. Addition of call stack support for debugging, resolution of
optimization issues in the C compiler, and DLL export/import for the
aarch64-w64-mingw32 target.
4. Unit testing integration for aarch64-w64-mingw32 target

The goal is to prepare the first patch series for upstreaming as
soon as possible. This will enable iterative development and
introduce a new target that can potentially be tested and
improved by the community.

If debugging information is a strong blocker for the first patch
series, its priority can be changed. However, it would be
preferable to include it in the second and third patch series,
as originally planned.

Regards,
Evgeny

[PATCH v1 08/13] aarch64: Add Cygwin and MinGW environments for AArch64

[Evgeny Karpov]

Wednesday, February 28, 2024 2:00 AM
Andrew Pinski wrote:

> What does this mean with respect to C++ exceptions? Or you using SJLJ
> exceptions support or the dwarf unwinding ones without SEH support?
> I am not sure if SJLJ exceptions is well tested any more in GCC either.
> 
> Also I have a question if you ran the full GCC/G++ testsuites and what were 
> the
> results?
> If you did run it, did you use a cross compiler or the native compiler? Did 
> you
> do a bootstrap (GCC uses C++ but no exceptions though)?

As mentioned in the cover letter and the thread, the current
contribution covers only the C scope.
Exception handling is fully disabled for now.
There is an experimental build with C++ and SEH, however, it
is not included in the plan for the current contribution.

https://github.com/Windows-on-ARM-Experiments/mingw-woarm64-build

> If you run using a cross compiler, did you use ssh or some other route to run
> the applications?
> 
> Thanks,
> Andrew Pinski

GitHub Actions are used to cross-compile toolchains, packages
and tests, and execute tests on Windows Arm64.

https://github.com/Windows-on-ARM-Experiments/mingw-woarm64-build/actions/runs/7929205044

Regards,
Evgeny

[PATCH v1 00/13] Add aarch64-w64-mingw32 target

[Evgeny Karpov]

Monday, February 26, 2024 2:30 AM 
NightStrike wrote:

> To be clear, because of the refactoring, it will affect x86/x64 Windows 
> targets.
> Can you do a testsuite run before and after and see that it doesn't get worse?
> The full testsuite for all languages for Windows isn't in great shape, but 
> it's not
> awful.  Some languages, like Rust and Fortran, have ~10 FAILs.  C and C++ have
> several thousand.
> 
> In particular, there are quite a few testsuite test FAILs regarding MS ABI 
> that
> hopefully do not get worse.
> 

Thank you for bringing it up! Our CI will be extended to test the x64
mingw target and calculate a delta, starting from patch series v2.

> Lastly, I don't think I see in the current patch series where you add new
> testsuite coverage for aarch64-specific bits.  I probably missed it, so feel 
> free to
> helpfully correct me there :)  I'd be curious to see how the tests were 
> written to
> take into account target differences (using for example the dejagnu feature
> procs) and other nuances.

Tests have not been added yet. This does not mean they do not exist
or are not used. They are implemented and used in our CI, and will be
contributed to the aarch64-w64-mingw32 target in the next patch
series.
https://github.com/Windows-on-ARM-Experiments/mingw-woarm64-build/tree/main/tests


Regards,
Evgeny

[PATCH v1 00/13] Add aarch64-w64-mingw32 target

[Evgeny Karpov]

Friday, February 23, 2024 7:00 PM
Richard Sandiford wrote:

> Seconded. :)  Thanks also for the very clear organisation of the series, and 
> for
> commonising code rather than cut-&-pasting it.

Thank you, Richard, for the valuable feedback. It is great to hear
that the series structure is easy to review. That work has been
done before submitting v1.
 
> FWIW, I agree with all the comments posted so far, and just sent some other
> comments too.  I think my main high-level comments are:
> 
> - Could you double-check that all the code in the common files are
>   used on both aarch64 and x86?  I think it's OK to move code outside
>   of x86 even if aarch64 doesn't want to use it, provided that it makes
>   conceptual target-independent sense.  But it's not clear whether
>   unused code is deliberate or not (e.g. the EXTRA_OS_CPP_BUILTINS
>   thing I mentioned in the part 2 review).

All files from the mingw folder are used by the aarch64 target.
Some of them are used partially as mingw.cc. As mentioned in the
cover letter, the current contribution covers only the C scope.
EXTRA_OS_CPP_BUILTINS is one example which is not used.
 
> - Could you test with all languages enabled, and say what languages
>   are supported?  Some languages require an existing compiler for
>   the same language and so are more difficult to bootstrap for
>   a new port.  I suppose you'd need a cross-host build first,
>   then use the cross-compiled compilers to bootstrap.
> 
> Thanks,
> Richard

Our CI for the current contribution uses and tests only the C
language for the aarch64-w64-mingw32 target.

Regards,
Evgeny

[PATCH v1 08/13] aarch64: Add Cygwin and MinGW environments for AArch64

[Evgeny Karpov]

SEH is not implemented yet and needs to be disabled in mingw/winnt.cc. 
Disabling every SEH function that uses references to these macros might trigger 
significant refactoring, and to avoid this, required macros are defined with 0. 
It is needed only for compilation. A comment with an explanation will be added.

It looks like IL32P64 works. It has been tested on OpenSSL, OpenBLAS, 
libjpeg-turbo, and FFmpeg packages. No issues have been detected with it.

Correct, stack checking cannot be explicitly disabled by the user. It will be 
interesting to know cases when it is needed. GCC uses stack probing only when 
the stack size is exceeded; size optimization is not an option then.

Regards,
Evgeny


-Original Message-
Friday, February 23, 2024 6:16 PM 
Richard Sandiford wrote:
 
> +
> +#undef TARGET_SEH
> +#define TARGET_SEH 0
> +
> +#define SSE_REGNO_P(N) 0
> +#define GENERAL_REGNO_P(N) 0

Could you add a comment to explain how these two macros are consumed?
What is the effect of saying that everything is neither a general register nor 
an SSE register?

> +#define SEH_MAX_FRAME_SIZE 0


> +/* Windows64 continues to use a 32-bit long type.  */ #undef 
> +LONG_TYPE_SIZE #define LONG_TYPE_SIZE 32

Just curious: this is AFAIK the first IL32P64 ABI for AArch64.
Do things Just Work, including for things like arm_neon.h and other ACLE header 
files?  I'm pleasantly surprised if so :)

I suppose this is more of a generic mingw/cygwin question, but does this mean 
that stack checking cannot be explicitly disabled by a user who "knows what 
they are doing"?

Thanks,
Richard

[PATCH v1 00/13] Add aarch64-w64-mingw32 target

[Evgeny Karpov]

Richard, thank you for the initial review! Hopefully, the required actions have 
been addressed, which should improve the patch quality in v2.

Regards,
Evgeny

-Original Message-
Thursday, February 22, 2024 2:40 PM 
Richard Earnshaw (lists) wrote:

Thanks for posting this.

I've only read quickly through this patch series and responded where I think 
some action is obviously required.  That doesn't necessarily mean the other 
patches are perfect, though, just that nothing immediately caught my attention.

R.

[PATCH v1 10/13] Rename "x86 Windows Options" to "Cygwin and MinGW Options"

[Evgeny Karpov]

@xref{Cygwin and MinGW Options} re-direct from "x86 Windows Options" will be 
added in v2. Thanks!

Regards,
Evgeny


-Original Message-
Thursday, February 22, 2024 2:32 PM 
Richard Earnshaw (lists) wrote:

For this change you might want to put some form of re-direct in the manual 
under the old name so that anybody used to looking for the old entry will know 
where things have been moved to.  Something like

x86 Windows Options
  See xref(Cygwin and MinGW Options).

R.

[PATCH v1 05/13] Reuse MinGW from i386 for AArch64

[Evgeny Karpov]

Thank you for the fix, Bernhard! Please send it as a separate patch.

Regards,
Evgeny

-Original Message-
Sent: Monday, February 26, 2024 9:18 AM
Bernhard Reutner-Fischer 

PS: Please don't forget to add an entry to contrib/config-list.mk thanks

[PATCH v1 04/13] aarch64: Add aarch64-w64-mingw32 COFF

[Evgeny Karpov]

Thanks for noticing this definition.
Yes, it was added to enable proper types in mingw/mingw-stdint.h for AArch64.
Based on the review, TARGET_64BIT has been excluded from 
aarch64/aarch64-coff.h, and 
mingw/mingw-stdint.h has been modified to support AArch64.

Regards,
Evgeny


gcc/config/mingw/mingw-stdint.h
@@ -46,5 +46,10 @@

-#define INTPTR_TYPE (TARGET_64BIT ? "long long int" : "int")
-#define UINTPTR_TYPE (TARGET_64BIT ? "long long unsigned int" : "unsigned int")
+#if defined (TARGET_AARCH64_MS_ABI)
+# define INTPTR_TYPE "long long int"
+# define UINTPTR_TYPE "long long unsigned int"
+#else
+# define INTPTR_TYPE (TARGET_64BIT ? "long long int" : "int")
+# define UINTPTR_TYPE (TARGET_64BIT ? "long long unsigned int" : "unsigned 
int")
+#endif


-Original Message-
Friday, February 23, 2024 6:02 PM 
Richard Sandiford wrote:


The only surprising thing here to me was:

> +
> +#define TARGET_64BIT 1

...this.  Does some code that is shared between x86 and aarch64 rely on this 
definition?  It might be worth identifying the code in a comment if so.

Thanks,
Richard

[PATCH v1 03/13] aarch64: Mark x18 register as a fixed register for MS ABI

[Evgeny Karpov]

In user mode on Windows, it points to TEB (Thread Environment Block).
more information here
https://learn.microsoft.com/en-us/cpp/build/arm64-windows-abi-conventions?view=msvc-170#integer-registers
https://learn.microsoft.com/en-us/windows/win32/api/winternl/ns-winternl-teb

Regards,
Evgeny

-Original Message-
Friday, February 23, 2024 5:56 PM
Richard Sandiford wrote:

How does the MS ABI use this register?  Same question for Darwin I suppose.

Thanks,
Richard

[PATCH v1 03/13] aarch64: Mark x18 register as a fixed register for MS ABI

[Evgeny Karpov]

Thank you Jacek for clarifying Wine's needs for ms_abi!
Work on vararg support is planned.

Regards,
Evgeny

-Original Message-
Friday, February 23, 2024 5:10 PM 
Jacek Caban wrote:

> Dynamically might be needed also if we want to support ms_abi 
> attribute and/or -mabi=ms to support the wine folks.

Wine no longer needs ms_abi, it was needed for PE-in-ELF modules in the past. 
We use use proper PE files now, so we need a cross compiler, but no special 
attributes. aarch64-w64-mingw32 is already well supported by Wine when using 
llvm-mingw, so as soon as GCC properly supports the ABI, Wine should just work 
with it, in theory. I didn't try it, but I don't see things like vararg support 
in this patchset nor in the repo, so I assume it won't work yet.


Thanks for the work!

Jacek

[PATCH v1 03/13] aarch64: Mark x18 register as a fixed register for MS ABI

[Evgeny Karpov]

This change has been refactored based on the review and will be included in v2.

Original aarch64.h will remain unchanged, and the required definition for MS 
ABI will be implemented in aarch64-abi-ms.h. The reference to this file will be 
added to config.gcc.
This change has been verified, and it appears to work correctly.

The X18 register should not be used in any case.
The call used flag should be set to 0 for the X18 register to prevent its use 
in function calls.
The same applies to the static chain. The X17 register will be used instead of 
X18.

Regards,
Evgeny


gcc/config.gcc
@@ -1263,7 +1263,8 @@

aarch64-*-mingw*)
+   tm_file="${tm_file} aarch64/aarch64-abi-ms.h"



gcc/config/aarch64/aarch64-abi-ms.h
/* Copyright */

/* X18 reserved for the TEB on Windows.  */

#undef FIXED_REGISTERS
#define FIXED_REGISTERS \
  { \
0, 0, 0, 0,   0, 0, 0, 0,   /* R0 - R7 */   \
0, 0, 0, 0,   0, 0, 0, 0,   /* R8 - R15 */  \
0, 0, 1, 0,   0, 0, 0, 0,   /* R16 - R23.  */   \
0, 0, 0, 0,   0, 1, 0, 1,   /* R24 - R30, SP */ \
0, 0, 0, 0,   0, 0, 0, 0,   /* V0 - V7 */   \
0, 0, 0, 0,   0, 0, 0, 0,   /* V8 - V15 */  \
0, 0, 0, 0,   0, 0, 0, 0,   /* V16 - V23 */ \
0, 0, 0, 0,   0, 0, 0, 0,   /* V24 - V31 */ \
1, 1, 1, 1, /* SFP, AP, CC, VG */   \
0, 0, 0, 0,   0, 0, 0, 0,   /* P0 - P7 */   \
0, 0, 0, 0,   0, 0, 0, 0,   /* P8 - P15 */  \
1, 1,   /* FFR and FFRT */  \
1, 1, 1, 1, 1, 1, 1, 1  /* Fake registers */\
  }

#undef CALL_REALLY_USED_REGISTERS
#define CALL_REALLY_USED_REGISTERS  \
  { \
1, 1, 1, 1,   1, 1, 1, 1,   /* R0 - R7 */   \
1, 1, 1, 1,   1, 1, 1, 1,   /* R8 - R15 */  \
1, 1, 0, 0,   0, 0, 0, 0,   /* R16 - R23.  */   \
0, 0, 0, 0,   0, 1, 1, 1,   /* R24 - R30, SP */ \
1, 1, 1, 1,   1, 1, 1, 1,   /* V0 - V7 */   \
0, 0, 0, 0,   0, 0, 0, 0,   /* V8 - V15 */  \
1, 1, 1, 1,   1, 1, 1, 1,   /* V16 - V23 */ \
1, 1, 1, 1,   1, 1, 1, 1,   /* V24 - V31 */ \
1, 1, 1, 0, /* SFP, AP, CC, VG */   \
1, 1, 1, 1,   1, 1, 1, 1,   /* P0 - P7 */   \
1, 1, 1, 1,   1, 1, 1, 1,   /* P8 - P15 */  \
1, 1,   /* FFR and FFRT */  \
0, 0, 0, 0, 0, 0, 0, 0  /* Fake registers */\
  }

#undef  STATIC_CHAIN_REGNUM
#define STATIC_CHAIN_REGNUM R17_REGNUM

 

-Original Message-
Thursday, February 22, 2024 12:55 PM 
Richard Earnshaw (lists) wrote:

+/* X18 reserved for the TEB on Windows.  */ #ifdef TARGET_ARM64_MS_ABI 
+# define FIXED_X18 1 # define CALL_USED_X18 0 #else # define FIXED_X18 
+0 # define CALL_USED_X18 1 #endif

I'm not overly keen on ifdefs like this (and the one below), it can get quite 
confusing if we have to support more than a couple of ABIs.  Perhaps we could 
create a couple of new headers, one for the EABI (which all existing targets 
would then need to include) and one for the MS ABI.  Then the mingw port would 
use that instead of the EABI header.

An alternative is to make all this dynamic, based on the setting of the 
aarch64_calling_abi enum and to make the adjustments in 
aarch64_conditional_register_usage.

+# define CALL_USED_X18 0

Is that really correct?  If the register is really reserved, but some code 
modifies it anyway, this will cause the compiler to restore the old value at 
the end of a function; generally, for a reserved register, code that knows what 
it's doing would want to make permanent changes to this value.

+#ifdef TARGET_ARM64_MS_ABI
+# define STATIC_CHAIN_REGNUM   R17_REGNUM
+#else
+# define STATIC_CHAIN_REGNUM   R18_REGNUM
+#endif

If we went the enum way, we'd want something like

#define STATIC_CHAIN_REGNUM (calling_abi == AARCH64_CALLING_ABI_MS ? R17_REGNUM 
: R18_REGNUM)

R.

[PATCH v1 13/13] Add aarch64-w64-mingw32 target to libgcc

[Evgeny Karpov]

The target will be adjusted to aarch64-*-mingw* in config.gcc. This
change will ensure consistency with the target in libgcc.

Regards,
Evgeny


-Original Message-
Thursday, February 22, 2024 2:36 PM
Richard Earnshaw (lists) wrote:

>
+aarch64-*-mingw*)

This doesn't match the glob pattern you added to config.gcc in an earlier 
patch, but see my comment on that.  The two should really be consistent with 
each other or you might get build failures late on.

R.

[PATCH v1 08/13] aarch64: Add Cygwin and MinGW environments for AArch64

[Evgeny Karpov]

Thank you for the historical information regarding the introduction 
of the features. I can confirm that removing the HAVE_GAS_WEAK check
and setting HAVE_GAS_ALIGNED_COMM to 1 by default works well.
These changes will be included in v2.

Regards,
Evgeny


-Original Message-
Thursday, February 22, 2024 2:23 PM
Richard Earnshaw (lists) wrote:

>
+/* GNU as supports weak symbols on PECOFF.  */ #ifdef HAVE_GAS_WEAK

Can't we assume this is true?  It was most likely needed on i386 because 
support goes back longer than the assembler had this feature, but it looks like 
it was added in 2000, or thereabouts, so significantly before aarch64 was 
supported in the assembler.

+#ifndef HAVE_GAS_ALIGNED_COMM

And this was added to GCC in 2009, which probably means it predates 
aarch64-coff support in gas as well.

R.

[PATCH v1 02/13] aarch64: The aarch64-w64-mingw32 target implements

[Evgeny Karpov]

Hi Martin,

Thank you for the clarification regarding the vararg implementation.
It is correct. The work is still in progress and will be included in
a later patch series.

ARM64EC is a separate work, which is outside the scope of the current
contribution plan.

Regards,
Evgeny

-Original Message-
Friday, February 23, 2024 9:37 PM
Martin Storsjö wrote: 

On Fri, 23 Feb 2024, Richard Sandiford wrote:

> Are there two distinct ABIs for aarch64-*-mingw*?  Or are these 
> distinctions ignored on aarch64 and just retained for compatibility?

(As far as I know, the correct Windows vararg calling convention is not yet 
implemented in this patch series, but would be a later addition.)

ARM64EC is an entirely different thing though, both out of scope for this 
patchset, and also a much bigger thing than an MS_ABI attribute.

// Martin

[PATCH v1 02/13] aarch64: The aarch64-w64-mingw32 target implements

[Evgeny Karpov]

Hi Richard,

Thank you for your review!

The MS_ABI definition is for the x86/x64 MS ABI, and it's clear that it 
shouldn't be used on aarch64.

The AARCH64_CALLING_ABI_MS definition resolves the issue.
It just needs to be properly handled in mingw32.h.

The change below is sufficient to resolve the ABI usage in mingw.

Regards,
Evgeny

gcc/config.gcc
-   tm_defines="${tm_defines} TARGET_ARM64_MS_ABI=1"
+   tm_defines="${tm_defines} TARGET_AARCH64_MS_ABI=1"

config/aarch64/aarch64-opts.h

+/* Available call ABIs.  */
+enum aarch64_calling_abi
+{
+  AARCH64_CALLING_ABI_EABI,
+  AARCH64_CALLING_ABI_MS
+};
+

gcc/config/mingw/mingw32.h
@@ -19,7 +19,11 @@

-#define DEFAULT_ABI MS_ABI
+#if defined (TARGET_AARCH64_MS_ABI)
+# define DEFAULT_ABI AARCH64_CALLING_ABI_MS
+#else
+# define DEFAULT_ABI MS_ABI
+#endif



-Original Message-
Friday, February 23, 2024 6:50 PM
Richard Sandiford wrote:

> What do you think about this change for v2?
>
> +/* Available call ABIs.  */
> +enum aarch64_calling_abi
> +{
> +  AARCH64_CALLING_ABI_EABI,
> +  AARCH64_CALLING_ABI_MS,
> +  MS_ABI = AARCH64_CALLING_ABI_MS
> +};
> +

How is MS_ABI used in practice?  When I apply locally, it looks like the two 
non-x86 uses are in:

gcc/config/mingw/mingw32.h:  if (TARGET_64BIT && ix86_abi == MS_ABI)
\
gcc/config/mingw/winnt-d.cc:  if (TARGET_64BIT && ix86_abi == MS_ABI)

But these should fail to build if used, because AFAICT there's no definition of 
ix86_abi on aarch64.

The first match is in EXTRA_OS_CPP_BUILTINS, but I couldn't see any uses of 
that in aarch64 code, which would explain why everything builds OK.
The winnt-d.cc occurence looks like it would break the build with the D 
frontend enabled though.

Are there two distinct ABIs for aarch64-*-mingw*?  Or are these distinctions 
ignored on aarch64 and just retained for compatibility?

If there are two distinct ABIs then we should probably add them to 
aarch64_arm_pcs.  But if there is only a single ABI, we should probably avoid 
adding calling_abi altogether and instead provide a macro like TARGET_IS_MS_ABI 
that aarch64 and x86 can define differently.

(To be clear, I don't think the different handling of x18 matters for the PCS 
classification.  That's an orthogonal platform property that applies to all PCS 
variants equally.  No-one had suggested otherwise, just wanted to say in case. 
:-) )

Thanks,
Richard

[PATCH v1 02/13] aarch64: The aarch64-w64-mingw32 target implements

[Evgeny Karpov]

The calling ABI enum definition has been done following a similar convention in 
https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/config/i386/i386-opts.h;h=ef2825803b32001b9632769bdff196d1e43d27ba;hb=refs/heads/master#l41

MS_ABI is used in gcc/config/i386/mingw32.h and gcc/config/i386/winnt-d.cc
https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/config/i386/mingw32.h;h=58304fc55f629648e47490fd3c0f3db3858e4fd8;hb=refs/heads/master#l22

These files are moved to the mingw folder in the patch series.
https://gcc.gnu.org/pipermail/gcc-patches/attachments/20240221/5e75c464/attachment.txt

What do you think about this change for v2?

+/* Available call ABIs.  */
+enum aarch64_calling_abi
+{
+  AARCH64_CALLING_ABI_EABI,
+  AARCH64_CALLING_ABI_MS,
+  MS_ABI = AARCH64_CALLING_ABI_MS
+};
+

Regards,
Evgeny


Thursday, February 22, 2024 12:40 PM
Richard Earnshaw (lists) wrote:

>
+/* Available call ABIs.  */
+enum calling_abi
+{
+  AARCH64_EABI = 0,
+  MS_ABI = 1
+};
+

The convention in this file seems to be that all enum types to start with 
aarch64.  Also, the enumeration values should start with the name of the 
enumeration type in upper case, so:

enum aarch64_calling_abi
{
  AARCH64_CALLING_ABI_EABI,
  AARCH64_CALLING_ABI_MS
};

or something very much like that.

R.

[PATCH v1 01/13] Introduce aarch64-w64-mingw32 target

[Evgeny Karpov]

Hi Andrew and Richard,

Thank you for pointing out there's no need for a 64-bit ISA and the big-endian 
target.
These changes will be addressed in v2.

Regards,
Evgeny

-Original Message-
Thursday, February 22, 2024 12:33 PM 
Richard Earnshaw (lists)  wrote:
>
+aarch64*-*-mingw*)

Other targets are a bit inconsistent here as well, but, as Andrew mentioned, if 
you don't want to handle big-endian, it might be better to match 
aarch64-*-mingw* here.


-Original Message-
Wednesday, February 21, 2024 7:23 PM 
Andrew Pinski wrote:

> need_64bit_isa=yes

This is not needed in the patch as it is only used for x86_64 targets.

Should you make sure nobody specifies the big-endian target:
aarch64_be-w64-mingw32  ?

[PATCH v1 00/13] Add aarch64-w64-mingw32 target

[Evgeny Karpov]

Hi Mark,

Thanks for testing the patch series!
It is great to know that EFI also works well.

Thank you for your contribution to this work!

Regards,
Evgeny

-Original Message-
Thursday, February 22, 2024 7:11 PM 
Mark Harmstone wrote:

Hi all,

Seems to work for me! Nice work.

It also works nicely with EFI as well, for anyone interested:

test.c:

#include 

EFI_STATUS efi_main(EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE* SystemTable) {
 SystemTable->ConOut->OutputString(SystemTable->ConOut, L"hello, 
world\r\n");

 return EFI_SUCCESS;
}

$ aarch64-w64-mingw32-gcc -I/usr/include/efi -nostartfiles -Wl,--subsystem,10 
-eefi_main test.c -o test.efi

Mark

[PATCH v1 00/13] Add aarch64-w64-mingw32 target

[Evgeny Karpov]

Hi Maxim,

Thank you for the review and the test build!

Regards,
Evgeny

-Original Message-
Wednesday, February 21, 2024 7:27 PM 
Maxim Kuvyrkov wrote:

Hi Evgeny,

Great job!

For reference, here is a test build of this patch series using Linaro Toolchain 
CI: 
https://ci.linaro.org/view/tcwg-build/job/tcwg_gnu_mingw_build--master-woa64-build/9/artifact/artifacts/

--
Maxim Kuvyrkov
 

[PATCH v1 05/13] Reuse MinGW from i386 for AArch64

[Evgeny Karpov]

A ChangeLog template using "Moved... ...here" has been generated by 
contrib/mklog.py.
It seems that it needs modification.

Regards,
Evgeny

-Original Message-
Thursday, February 22, 2024 12:11 PM
Richard Earnshaw (lists) wrote:

> The ChangeLog has to be expressed in present tense, as mandated by the 
> standard; s/Moved/Move/g etc.

Agreed, but that's a detail that we can get to once the patch has been properly 
reviewed.

[PATCH v1 05/13] Reuse MinGW from i386 for AArch64

[Evgeny Karpov]

Hello Andrew,

Thank you for the review!

Renaming functions and comments that reference functions with the
i386_ prefix can trigger extensive changes. This task should
ideally be handled in a separate follow-up patch.

The primary goal of the renaming changes in
https://gcc.gnu.org/pipermail/gcc-patches/attachments/20240221/8f41fb9a/attachment-0001.txt
 
was to avoid direct references from the aarch64 target to 
functions with i386_ prefix.

Regards,
Evgeny

-Original Message-
Wednesday, February 21, 2024 7:50 PM
Andrew Pinski wrote:

On Wed, Feb 21, 2024 at 10:38 AM Evgeny Karpov  
wrote:
>
>

In config/i386/winnt.cc there are many x86_64 comments and many function names 
that use i386 in them? When moving it seems like better to rename them and 
remove references to 86.
I don't see any changes that rename the functions or comments there.

Thanks,
Andrew

RE: [EXTERNAL] Re: [PATCH v1 03/13] aarch64: Mark x18 register as a fixed register for MS ABI

[Evgeny Karpov]

Hi Richard,

Thanks for the review!

TARGET_ARM64_MS_ABI refers to the official Microsoft ARM64 ABI naming used for 
the target. 
If AARCH64 is a more preferred name, it will be changed in PATCH v2.

https://learn.microsoft.com/en-us/cpp/build/arm64-windows-abi-conventions?view=msvc-170

Regards,
Evgeny

-Original Message-
Thursday, February 22, 2024 2:11 PM
Richard Earnshaw (lists) wrote:

On 21/02/2024 18:30, Evgeny Karpov wrote:
>
+   tm_defines="${tm_defines} TARGET_ARM64_MS_ABI=1"

I missed this on first reading...

The GCC port name uses AARCH64, please use that internally rather than other 
names.  The only time when we should be using ARM64 is when it's needed for 
compatibility with other compilers and that doesn't apply here AFAICT.

R.

[PATCH v1 13/13] Add aarch64-w64-mingw32 target to libgcc

[Evgeny Karpov]

From fa02812c6fb39fd409a27cd09664530f2fabd9e3 Mon Sep 17 00:00:00 2001
From: Zac Walker 
Date: Mon, 12 Feb 2024 15:22:47 +0100
Subject: [PATCH v1 13/13] Add aarch64-w64-mingw32 target to libgcc

Reuse MinGW definitions from i386 for libgcc. Move reused files to
libgcc/config/mingw folder.

libgcc/ChangeLog:

* config.host: Add aarch64-w64-mingw32 target. Adjust targets
after moving MinGW files.
* config/i386/t-gthr-win32: Moved to...
* config/mingw/t-gthr-win32: ...here.
* config/i386/t-mingw-pthread: Moved to...
* config/mingw/t-mingw-pthread: ...here.
* config/aarch64/t-no-eh: New file. EH is not yet implemented for
the target, and the default definition should be disabled.
---
 libgcc/config.host| 23 +++
 libgcc/config/aarch64/t-no-eh |  2 ++
 libgcc/config/{i386 => mingw}/t-gthr-win32|  0
 libgcc/config/{i386 => mingw}/t-mingw-pthread |  0
 4 files changed, 21 insertions(+), 4 deletions(-)
 create mode 100644 libgcc/config/aarch64/t-no-eh
 rename libgcc/config/{i386 => mingw}/t-gthr-win32 (100%)
 rename libgcc/config/{i386 => mingw}/t-mingw-pthread (100%)

diff --git a/libgcc/config.host b/libgcc/config.host
index 59a42d3a01f..3396a84893f 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -456,6 +456,21 @@ aarch64*-*-vxworks7*)
tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm"
tmake_file="${tmake_file} t-dfprules"
;;
+aarch64-*-mingw*)
+   case ${target_thread_file} in
+ win32)
+   tmake_thr_file="mingw/t-gthr-win32"
+   ;;
+ posix)
+   tmake_thr_file="mingw/t-mingw-pthread"
+   ;;
+   esac
+   tmake_file="${tmake_file} ${cpu_type}/t-no-eh ${tmake_thr_file}"
+   tmake_file="${tmake_file} t-dfprules"
+   tmake_file="${tmake_file} ${cpu_type}/t-aarch64"
+   tmake_file="${tmake_file} ${cpu_type}/t-lse"
+   tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm"
+   ;;
 alpha*-*-linux*)
tmake_file="${tmake_file} alpha/t-alpha alpha/t-ieee t-crtfm 
alpha/t-linux"
extra_parts="$extra_parts crtfastmath.o"
@@ -874,10 +889,10 @@ i[34567]86-*-mingw*)
fi
case ${target_thread_file} in
  win32)
-   tmake_thr_file="i386/t-gthr-win32"
+   tmake_thr_file="mingw/t-gthr-win32"
;;
  posix)
-   tmake_thr_file="i386/t-mingw-pthread"
+   tmake_thr_file="mingw/t-mingw-pthread"
;;
  mcf)
tmake_thr_file="i386/t-mingw-mcfgthread"
@@ -901,10 +916,10 @@ i[34567]86-*-mingw*)
 x86_64-*-mingw*)
case ${target_thread_file} in
  win32)
-   tmake_thr_file="i386/t-gthr-win32"
+   tmake_thr_file="mingw/t-gthr-win32"
;;
  posix)
-   tmake_thr_file="i386/t-mingw-pthread"
+   tmake_thr_file="mingw/t-mingw-pthread"
;;
  mcf)
tmake_thr_file="i386/t-mingw-mcfgthread"
diff --git a/libgcc/config/aarch64/t-no-eh b/libgcc/config/aarch64/t-no-eh
new file mode 100644
index 000..1802339a583
--- /dev/null
+++ b/libgcc/config/aarch64/t-no-eh
@@ -0,0 +1,2 @@
+# Not using EH
+LIB2ADDEH =
diff --git a/libgcc/config/i386/t-gthr-win32 b/libgcc/config/mingw/t-gthr-win32
similarity index 100%
rename from libgcc/config/i386/t-gthr-win32
rename to libgcc/config/mingw/t-gthr-win32
diff --git a/libgcc/config/i386/t-mingw-pthread 
b/libgcc/config/mingw/t-mingw-pthread
similarity index 100%
rename from libgcc/config/i386/t-mingw-pthread
rename to libgcc/config/mingw/t-mingw-pthread
-- 
2.25.1

[PATCH v1 12/13] aarch64: Add aarch64-w64-mingw32 target to libatomic

[Evgeny Karpov]

From d6de6d367f109e5e0b3b0a228e4f3411b53d8e7f Mon Sep 17 00:00:00 2001
From: Zac Walker 
Date: Mon, 8 Jan 2024 22:19:45 +0100
Subject: [PATCH v1 12/13] aarch64: Add aarch64-w64-mingw32 target to libatomic

libatomic/ChangeLog:

* configure.tgt: Add aarch64-w64-mingw32 target.
---
 libatomic/configure.tgt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libatomic/configure.tgt b/libatomic/configure.tgt
index 4237f283fe4..eea4c25e061 100644
--- a/libatomic/configure.tgt
+++ b/libatomic/configure.tgt
@@ -44,7 +44,7 @@ case "${target_cpu}" in
   aarch64*)
ARCH=aarch64
case "${target}" in
-   aarch64*-*-linux*)
+   aarch64*-*-linux* | aarch64*-*-mingw*)
if test -n "$enable_aarch64_lse"; then
try_ifunc=yes
fi
-- 
2.25.1

[PATCH v1 11/13] aarch64: Build and add objects for Cygwin and MinGW for AArch64

[Evgeny Karpov]

From c00d64291446f722dd2268aaca6ca156e9888fe7 Mon Sep 17 00:00:00 2001
From: Zac Walker 
Date: Tue, 20 Feb 2024 13:55:51 +0100
Subject: [PATCH v1 11/13] aarch64: Build and add objects for Cygwin and MinGW
 for AArch64

gcc/ChangeLog:

* config.gcc: Build and add objects for Cygwin and MinGW. Add Cygwin
and MinGW options to the target.
---
 gcc/config.gcc | 5 +
 1 file changed, 5 insertions(+)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 96e3508eb30..3e839eee369 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1270,6 +1270,11 @@ aarch64*-*-mingw*)
tm_file="${tm_file} mingw/mingw-stdint.h"
tmake_file="${tmake_file} aarch64/t-aarch64"
target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt.cc"
+   extra_options="${extra_options} mingw/cygming.opt mingw/mingw.opt"
+   extra_objs="${extra_objs} winnt.o"
+   c_target_objs="${c_target_objs} msformat-c.o"
+   d_target_objs="${d_target_objs} winnt-d.o"
+   tmake_file="${tmake_file} mingw/t-cygming"
case ${enable_threads} in
  "" | yes | win32)
thread_file='win32'
-- 
2.25.1

[PATCH v1 10/13] Rename "x86 Windows Options" to "Cygwin and MinGW Options"

[Evgeny Karpov]

From 7d27cda54a56e93ba63c5cf4d47e5c865bdae525 Mon Sep 17 00:00:00 2001
From: Zac Walker 
Date: Tue, 20 Feb 2024 15:45:53 +0100
Subject: [PATCH v1 10/13] Rename "x86 Windows Options" to "Cygwin and MinGW
 Options"

Rename "x86 Windows Options" to "Cygwin and MinGW Options".
It will be used also for AArch64.

gcc/ChangeLog:

* config/i386/mingw-w64.opt.urls: Rename options' name and
regenerate option URLs.
* config/lynx.opt.urls: Likewise.
* config/mingw/cygming.opt.urls: Likewise.
* config/mingw/mingw.opt.urls: Likewise.
* doc/invoke.texi: Likewise.
---
 gcc/config/i386/mingw-w64.opt.urls |  2 +-
 gcc/config/lynx.opt.urls   |  2 +-
 gcc/config/mingw/cygming.opt.urls  | 18 +-
 gcc/config/mingw/mingw.opt.urls|  2 +-
 gcc/doc/invoke.texi| 12 ++--
 5 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/gcc/config/i386/mingw-w64.opt.urls 
b/gcc/config/i386/mingw-w64.opt.urls
index 6bb53ef29b2..5cceba1d1a1 100644
--- a/gcc/config/i386/mingw-w64.opt.urls
+++ b/gcc/config/i386/mingw-w64.opt.urls
@@ -1,5 +1,5 @@
 ; Autogenerated by regenerate-opt-urls.py from gcc/config/i386/mingw-w64.opt 
and generated HTML
 
 municode
-UrlSuffix(gcc/x86-Windows-Options.html#index-municode)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-municode)
 
diff --git a/gcc/config/lynx.opt.urls b/gcc/config/lynx.opt.urls
index 63e7b9c4b33..b547138f7ff 100644
--- a/gcc/config/lynx.opt.urls
+++ b/gcc/config/lynx.opt.urls
@@ -1,5 +1,5 @@
 ; Autogenerated by regenerate-opt-urls.py from gcc/config/lynx.opt and 
generated HTML
 
 mthreads
-UrlSuffix(gcc/x86-Windows-Options.html#index-mthreads-1)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mthreads-1)
 
diff --git a/gcc/config/mingw/cygming.opt.urls 
b/gcc/config/mingw/cygming.opt.urls
index 87799befe3c..c624e22e442 100644
--- a/gcc/config/mingw/cygming.opt.urls
+++ b/gcc/config/mingw/cygming.opt.urls
@@ -1,30 +1,30 @@
 ; Autogenerated by regenerate-opt-urls.py from gcc/config/i386/cygming.opt and 
generated HTML
 
 mconsole
-UrlSuffix(gcc/x86-Windows-Options.html#index-mconsole)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mconsole)
 
 mdll
-UrlSuffix(gcc/x86-Windows-Options.html#index-mdll)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mdll)
 
 mnop-fun-dllimport
-UrlSuffix(gcc/x86-Windows-Options.html#index-mnop-fun-dllimport)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mnop-fun-dllimport)
 
 ; skipping UrlSuffix for 'mthreads' due to multiple URLs:
+;   duplicate: 'gcc/Cygwin-and-MinGW-Options.html#index-mthreads-1'
 ;   duplicate: 'gcc/x86-Options.html#index-mthreads'
-;   duplicate: 'gcc/x86-Windows-Options.html#index-mthreads-1'
 
 mwin32
-UrlSuffix(gcc/x86-Windows-Options.html#index-mwin32)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mwin32)
 
 mwindows
-UrlSuffix(gcc/x86-Windows-Options.html#index-mwindows)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mwindows)
 
 mpe-aligned-commons
-UrlSuffix(gcc/x86-Windows-Options.html#index-mpe-aligned-commons)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mpe-aligned-commons)
 
 fset-stack-executable
-UrlSuffix(gcc/x86-Windows-Options.html#index-fno-set-stack-executable)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-fno-set-stack-executable)
 
 fwritable-relocated-rdata
-UrlSuffix(gcc/x86-Windows-Options.html#index-fno-writable-relocated-rdata)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-fno-writable-relocated-rdata)
 
diff --git a/gcc/config/mingw/mingw.opt.urls b/gcc/config/mingw/mingw.opt.urls
index 2cbbaadf310..f8ee5be6a53 100644
--- a/gcc/config/mingw/mingw.opt.urls
+++ b/gcc/config/mingw/mingw.opt.urls
@@ -1,7 +1,7 @@
 ; Autogenerated by regenerate-opt-urls.py from gcc/config/i386/mingw.opt and 
generated HTML
 
 mcrtdll=
-UrlSuffix(gcc/x86-Windows-Options.html#index-mcrtdll)
+UrlSuffix(gcc/Cygwin-and-MinGW-Options.html#index-mcrtdll)
 
 ; skipping UrlSuffix for 'pthread' due to multiple URLs:
 ;   duplicate: 'gcc/Link-Options.html#index-pthread-1'
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index e18886e0ac7..eaa1e3dc6d2 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -1492,7 +1492,7 @@ See RS/6000 and PowerPC Options.
 -mindirect-branch-cs-prefix -mneeded -mno-direct-extern-access
 -munroll-only-small-loops -mlam=@var{choice}}
 
-@emph{x86 Windows Options}
+@emph{Cygwin and MinGW Options}
 @gccoptlist{-mconsole  -mcrtdll=@var{library}  -mdll
 -mnop-fun-dllimport  -mthread
 -municode  -mwin32  -mwindows  -fno-set-stack-executable}
@@ -20970,6 +20970,7 @@ platform.
 * C6X Options::
 * CRIS Options::
 * C-SKY Options::
+* Cygwin and MinGW Options::
 * Darwin Options::
 * DEC Alpha Options::
 * eBPF Options::
@@ -21014,7 +21015,6 @@ platform.
 * VMS Options::
 * VxWorks Options::
 * x86 Options::
-* x86 Windows Options::
 * Xstormy16 Options::
 * Xtensa Options::
 * zSeries Options::
@@ -36094,10 +36094,10 @@ positions 62:48 can be used for metadata; 

[PATCH v1 08/13] aarch64: Add Cygwin and MinGW environments for AArch64

[Evgeny Karpov]

From 1ea6efa6f88d131884ecef21c4b5d2ecbab14ea7 Mon Sep 17 00:00:00 2001
From: Zac Walker 
Date: Tue, 20 Feb 2024 18:06:36 +0100
Subject: [PATCH v1 08/13] aarch64: Add Cygwin and MinGW environments for
 AArch64

Define Cygwin and MinGW environment such as types, SEH definitions,
shared libraries, etc.

gcc/ChangeLog:

* config.gcc: Add Cygwin and MinGW difinitions.
* config/aarch64/aarch64-protos.h
(mingw_pe_maybe_record_exported_symbol): Declare functions
which are used in Cygwin and MinGW environment.
(mingw_pe_section_type_flags): Likewise.
(mingw_pe_unique_section): Likewise.
(mingw_pe_encode_section_info): Likewise.
* config/aarch64/cygming.h: New file.
---
 gcc/config.gcc  |   1 +
 gcc/config/aarch64/aarch64-protos.h |   5 +
 gcc/config/aarch64/cygming.h| 178 
 3 files changed, 184 insertions(+)
 create mode 100644 gcc/config/aarch64/cygming.h

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 498ee702607..96e3508eb30 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1265,6 +1265,7 @@ aarch64*-*-linux*)
;;
 aarch64*-*-mingw*)
tm_file="${tm_file} aarch64/aarch64-coff.h"
+   tm_file="${tm_file} aarch64/cygming.h"
tm_file="${tm_file} mingw/mingw32.h"
tm_file="${tm_file} mingw/mingw-stdint.h"
tmake_file="${tmake_file} aarch64/t-aarch64"
diff --git a/gcc/config/aarch64/aarch64-protos.h 
b/gcc/config/aarch64/aarch64-protos.h
index a0b142e0b94..6d85452b0f6 100644
--- a/gcc/config/aarch64/aarch64-protos.h
+++ b/gcc/config/aarch64/aarch64-protos.h
@@ -1109,6 +1109,11 @@ extern void aarch64_output_patchable_area (unsigned int, 
bool);
 
 extern void aarch64_adjust_reg_alloc_order ();
 
+extern void mingw_pe_maybe_record_exported_symbol (tree, const char *, int);
+extern unsigned int mingw_pe_section_type_flags (tree, const char *, int);
+extern void mingw_pe_unique_section (tree, int);
+extern void mingw_pe_encode_section_info (tree, rtx, int);
+
 bool aarch64_optimize_mode_switching (aarch64_mode_entity);
 void aarch64_restore_za (rtx);
 
diff --git a/gcc/config/aarch64/cygming.h b/gcc/config/aarch64/cygming.h
new file mode 100644
index 000..cf47184eb66
--- /dev/null
+++ b/gcc/config/aarch64/cygming.h
@@ -0,0 +1,178 @@
+/* Operating system specific defines to be used when targeting GCC for
+   hosting on Windows32, using a Unix style C library and tools.
+   Copyright (C) 1995-2024 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+.  */
+
+#ifndef GCC_AARCH64_CYGMING_H
+#define GCC_AARCH64_CYGMING_H
+
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE DINFO_TYPE_NONE
+
+#define FASTCALL_PREFIX '@'
+
+#define print_reg(rtx, code, file)
+
+#define SYMBOL_FLAG_DLLIMPORT 0
+#define SYMBOL_FLAG_DLLEXPORT 0
+
+#define SYMBOL_REF_DLLEXPORT_P(X) \
+   ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_DLLEXPORT) != 0)
+
+#undef TARGET_SEH
+#define TARGET_SEH 0
+
+#define SSE_REGNO_P(N) 0
+#define GENERAL_REGNO_P(N) 0
+#define SEH_MAX_FRAME_SIZE 0
+
+#undef DEFAULT_ABI
+#define DEFAULT_ABI MS_ABI
+
+#undef TARGET_PECOFF
+#define TARGET_PECOFF 1
+
+#include 
+#ifdef __MINGW32__
+#include 
+#endif
+
+extern void mingw_pe_asm_named_section (const char *, unsigned int, tree);
+extern void mingw_pe_declare_function_type (FILE *file, const char *name,
+   int pub);
+
+#define TARGET_ASM_NAMED_SECTION  mingw_pe_asm_named_section
+
+/* Select attributes for named sections.  */
+#define TARGET_SECTION_TYPE_FLAGS  mingw_pe_section_type_flags
+
+#define TARGET_ASM_UNIQUE_SECTION mingw_pe_unique_section
+#define TARGET_ENCODE_SECTION_INFO  mingw_pe_encode_section_info
+
+/* Declare the type properly for any external libcall.  */
+#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
+  mingw_pe_declare_function_type (FILE, XSTR (FUN, 0), 1)
+
+#define TARGET_OS_CPP_BUILTINS()   \
+  do   \
+{  \
+  builtin_define ("__MSVCRT__");   \
+  builtin_define ("__MINGW32__");  \
+  builtin_define ("_WIN32");   \
+  builtin_define_std ("WIN32");

[PATCH v1 09/13] aarch64: Add SEH to machine_function

[Evgeny Karpov]

From e82f58dc1ef9405a86f6e77c29fe2359128a22aa Mon Sep 17 00:00:00 2001
From: Zac Walker 
Date: Tue, 20 Feb 2024 18:10:08 +0100
Subject: [PATCH v1 09/13] aarch64: Add SEH to machine_function

SEH is not enabled in aarch64-w64-mingw32 target yet. However, it is
needed to be declared in machine_function for reusing winnt.cc.

gcc/ChangeLog:

* config/aarch64/aarch64.h (struct seh_frame_state): Declare SEH
structure in machine_function.
(GTY): Add SEH field.
---
 gcc/config/aarch64/aarch64.h | 6 ++
 1 file changed, 6 insertions(+)

diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h
index 36916e7a97d..7f025e74a66 100644
--- a/gcc/config/aarch64/aarch64.h
+++ b/gcc/config/aarch64/aarch64.h
@@ -1055,6 +1055,9 @@ struct GTY (()) aarch64_frame
   bool is_scs_enabled;
 };
 
+/* Private to winnt.cc.  */
+struct seh_frame_state;
+
 #ifdef hash_set_h
 typedef struct GTY (()) machine_function
 {
@@ -1095,6 +1098,9 @@ typedef struct GTY (()) machine_function
  still exists and still fulfils its original purpose. the same register
  can be reused by other code.  */
   rtx_insn *advsimd_zero_insn;
+
+  /* During SEH output, this is non-null.  */
+  struct seh_frame_state * GTY ((skip (""))) seh;
 } machine_function;
 #endif
 #endif
-- 
2.25.1

[PATCH v1 05/13] Reuse MinGW from i386 for AArch64

[Evgeny Karpov]

From 408ca45f7c5c6e58208a7b8004f764dc0c1afdd3 Mon Sep 17 00:00:00 2001
From: Zac Walker 
Date: Tue, 20 Feb 2024 18:15:27 +0100
Subject: [PATCH v1 05/13] Reuse MinGW from i386 for AArch64

This patch creates a new config/mingw directory to share MinGW
related definitions, and moves there the corresponding existing files
from config/i386. It also makes uses of them on the new
aarch64-w64-mingw32 target.

gcc/ChangeLog:

* config.gcc: Adjust targets after moving MinGW related files
from i386 to mingw folder.
* config/i386/cygming.opt: Moved to...
* config/mingw/cygming.opt: ...here.
* config/i386/cygming.opt.urls: Moved to...
* config/mingw/cygming.opt.urls: ...here.
* config/i386/cygwin-d.cc: Moved to...
* config/mingw/cygwin-d.cc: ...here.
* config/i386/mingw-stdint.h: Moved to...
* config/mingw/mingw-stdint.h: ...here.
* config/i386/mingw.opt: Moved to...
* config/mingw/mingw.opt: ...here.
* config/i386/mingw.opt.urls: Moved to...
* config/mingw/mingw.opt.urls: ...here.
* config/i386/mingw32.h: Moved to...
* config/mingw/mingw32.h: ...here.
* config/i386/msformat-c.cc: Moved to...
* config/mingw/msformat-c.cc: ...here.
* config/i386/t-cygming: Moved to...
* config/mingw/t-cygming: ...here and updated.
* config/i386/winnt-cxx.cc: Moved to...
* config/mingw/winnt-cxx.cc: ...here.
* config/i386/winnt-d.cc: Moved to...
* config/mingw/winnt-d.cc: ...here.
* config/i386/winnt-stubs.cc: Moved to...
* config/mingw/winnt-stubs.cc: ...here.
* config/i386/winnt.cc: Moved to...
* config/mingw/winnt.cc: ...here.
---
 gcc/config.gcc  | 25 -
 gcc/config/{i386 => mingw}/cygming.opt  |  0
 gcc/config/{i386 => mingw}/cygming.opt.urls |  0
 gcc/config/{i386 => mingw}/cygwin-d.cc  |  0
 gcc/config/{i386 => mingw}/mingw-stdint.h   |  0
 gcc/config/{i386 => mingw}/mingw.opt|  0
 gcc/config/{i386 => mingw}/mingw.opt.urls   |  0
 gcc/config/{i386 => mingw}/mingw32.h|  0
 gcc/config/{i386 => mingw}/msformat-c.cc|  0
 gcc/config/{i386 => mingw}/t-cygming| 23 ++-
 gcc/config/{i386 => mingw}/winnt-cxx.cc |  0
 gcc/config/{i386 => mingw}/winnt-d.cc   |  0
 gcc/config/{i386 => mingw}/winnt-stubs.cc   |  0
 gcc/config/{i386 => mingw}/winnt.cc |  0
 14 files changed, 27 insertions(+), 21 deletions(-)
 rename gcc/config/{i386 => mingw}/cygming.opt (100%)
 rename gcc/config/{i386 => mingw}/cygming.opt.urls (100%)
 rename gcc/config/{i386 => mingw}/cygwin-d.cc (100%)
 rename gcc/config/{i386 => mingw}/mingw-stdint.h (100%)
 rename gcc/config/{i386 => mingw}/mingw.opt (100%)
 rename gcc/config/{i386 => mingw}/mingw.opt.urls (100%)
 rename gcc/config/{i386 => mingw}/mingw32.h (100%)
 rename gcc/config/{i386 => mingw}/msformat-c.cc (100%)
 rename gcc/config/{i386 => mingw}/t-cygming (73%)
 rename gcc/config/{i386 => mingw}/winnt-cxx.cc (100%)
 rename gcc/config/{i386 => mingw}/winnt-d.cc (100%)
 rename gcc/config/{i386 => mingw}/winnt-stubs.cc (100%)
 rename gcc/config/{i386 => mingw}/winnt.cc (100%)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 34c7be72fb6..498ee702607 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1265,7 +1265,10 @@ aarch64*-*-linux*)
;;
 aarch64*-*-mingw*)
tm_file="${tm_file} aarch64/aarch64-coff.h"
+   tm_file="${tm_file} mingw/mingw32.h"
+   tm_file="${tm_file} mingw/mingw-stdint.h"
tmake_file="${tmake_file} aarch64/t-aarch64"
+   target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt.cc"
case ${enable_threads} in
  "" | yes | win32)
thread_file='win32'
@@ -2161,9 +2164,9 @@ i[4567]86-wrs-vxworks*|x86_64-wrs-vxworks7*)
 i[34567]86-*-cygwin*)
tm_file="${tm_file} i386/unix.h i386/bsd.h i386/gas.h i386/cygming.h 
i386/cygwin.h i386/cygwin-stdint.h"
xm_file=i386/xm-cygwin.h
-   tmake_file="${tmake_file} i386/t-cygming t-slibgcc"
-   target_gtfiles="$target_gtfiles \$(srcdir)/config/i386/winnt.cc"
-   extra_options="${extra_options} i386/cygming.opt i386/cygwin.opt"
+   tmake_file="${tmake_file} mingw/t-cygming t-slibgcc"
+   target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt.cc"
+   extra_options="${extra_options} mingw/cygming.opt i386/cygwin.opt"
extra_objs="${extra_objs} winnt.o winnt-stubs.o"
c_target_objs="${c_target_objs} msformat-c.o"
cxx_target_objs="${cxx_target_objs} winnt-cxx.o msformat-c.o"
@@ -2179,9 +2182,9 @@ x86_64-*-cygwin*)
need_64bit_isa=yes
tm_file="${tm_file} i386/unix.h i386/bsd.h i386/gas.h i386/cygming.h 
i386/cygwin.h i386/cygwin-w64.h i386/cygwin-stdint.h"
xm_file=i386/xm-cygwin.h
-   tmake_file="${tmake_file} i386/t-cygming t-slibgcc"
-   target_gtfiles="$target_gtfiles 

[PATCH v1 07/13] Exclude i386 functionality from aarch64 build

[Evgeny Karpov]

From 1b7451707709d6745efb52b54b17e798d7375aac Mon Sep 17 00:00:00 2001
From: Zac Walker 
Date: Tue, 20 Feb 2024 17:31:58 +0100
Subject: [PATCH v1 07/13] Exclude i386 functionality from aarch64 build

ix86_get_callcvt is used for i386 build and needs to be excluded to
reuse winnt.cc in aarch64.

gcc/ChangeLog:

* config/mingw/winnt.cc (defined): Use TARGET_ARM64_MS_ABI to
exclude ix86_get_callcvt.
(i386_pe_maybe_mangle_decl_assembler_name): Likewise.
(i386_pe_mangle_decl_assembler_name): Likewise.
---
 gcc/config/mingw/winnt.cc | 8 
 1 file changed, 8 insertions(+)

diff --git a/gcc/config/mingw/winnt.cc b/gcc/config/mingw/winnt.cc
index 1ed383155d0..bd86cfb1156 100644
--- a/gcc/config/mingw/winnt.cc
+++ b/gcc/config/mingw/winnt.cc
@@ -224,6 +224,8 @@ gen_stdcall_or_fastcall_suffix (tree decl, tree id, bool 
fastcall)
   return get_identifier (new_str);
 }
 
+#if !defined (TARGET_ARM64_MS_ABI)
+
 /* Maybe decorate and get a new identifier for the DECL of a stdcall or
fastcall function. The original identifier is supplied in ID. */
 
@@ -250,6 +252,8 @@ i386_pe_maybe_mangle_decl_assembler_name (tree decl, tree 
id)
   return new_id;
 }
 
+#endif
+
 /* Emit an assembler directive to set symbol for DECL visibility to
the visibility type VIS, which must not be VISIBILITY_DEFAULT.
As for PE there is no hidden support in gas, we just warn for
@@ -266,6 +270,8 @@ i386_pe_assemble_visibility (tree decl, int)
  "in this configuration; ignored");
 }
 
+#if !defined (TARGET_ARM64_MS_ABI)
+
 /* This is used as a target hook to modify the DECL_ASSEMBLER_NAME
in the language-independent default hook
langhooks,c:lhd_set_decl_assembler_name ()
@@ -278,6 +284,8 @@ i386_pe_mangle_decl_assembler_name (tree decl, tree id)
   return (new_id ? new_id : id);
 }
 
+#endif
+
 /* This hook behaves the same as varasm.cc/assemble_name(), but
generates the name into memory rather than outputting it to
a file stream.  */
-- 
2.25.1

[PATCH v1 06/13] Rename section and encoding functions from i386 which will be used in aarch64

[Evgeny Karpov]

From 69561787206b968b5a86c48ca9c9f9073761ed78 Mon Sep 17 00:00:00 2001
From: Zac Walker 
Date: Tue, 20 Feb 2024 17:22:31 +0100
Subject: [PATCH v1 06/13] Rename section and encoding functions from i386
 which will be used in aarch64

gcc/ChangeLog:

* config/i386/cygming.h (SUBTARGET_ENCODE_SECTION_INFO):
Rename functions in mingw folder which will be reused for
aarch64.
(TARGET_ASM_UNIQUE_SECTION): Likewise.
(TARGET_ASM_NAMED_SECTION): Likewise.
(TARGET_SECTION_TYPE_FLAGS): Likewise.
(ASM_DECLARE_COLD_FUNCTION_NAME): Likewise.
(ASM_OUTPUT_EXTERNAL_LIBCALL): Likewise.
* config/i386/i386-protos.h (i386_pe_unique_section):
Rename into ...
(mingw_pe_unique_section): ... this.
(i386_pe_declare_function_type): Rename into ...
(mingw_pe_declare_function_type): ... this.
(i386_pe_encode_section_info): Rename into ...
(mingw_pe_encode_section_info): ... this.
(i386_pe_maybe_record_exported_symbol): Rename into ...
(mingw_pe_maybe_record_exported_symbol): ... this.
(i386_pe_section_type_flags): Rename into ...
(mingw_pe_section_type_flags): ... this.
(i386_pe_asm_named_section): Rename into ...
(mingw_pe_asm_named_section): ... this.
* config/mingw/winnt.cc (i386_pe_encode_section_info):
Rename into ...
(mingw_pe_encode_section_info): ... this.
(i386_pe_unique_section): Rename into ...
(mingw_pe_unique_section): ... this.
(i386_pe_section_type_flags): Rename into ...
(mingw_pe_section_type_flags): ... this.
(i386_pe_asm_named_section): Rename into ...
(mingw_pe_asm_named_section): ... this.
(i386_pe_asm_output_aligned_decl_common): Likewise.
(i386_pe_declare_function_type): Rename into ...
(mingw_pe_declare_function_type): ... this.
(i386_pe_maybe_record_exported_symbol): Rename into ...
(mingw_pe_maybe_record_exported_symbol): ... this.
(i386_pe_start_function): Likewise.
* varasm.cc (switch_to_comdat_section): Likewise.
---
 gcc/config/i386/cygming.h | 18 +-
 gcc/config/i386/i386-protos.h | 12 ++--
 gcc/config/mingw/winnt.cc | 22 +++---
 gcc/varasm.cc |  2 +-
 4 files changed, 27 insertions(+), 27 deletions(-)

diff --git a/gcc/config/i386/cygming.h b/gcc/config/i386/cygming.h
index 1af5bc380a5..beedf7c398a 100644
--- a/gcc/config/i386/cygming.h
+++ b/gcc/config/i386/cygming.h
@@ -219,7 +219,7 @@ do {
\
section and we need to set DECL_SECTION_NAME so we do that here.
Note that we can be called twice on the same decl.  */
 
-#define SUBTARGET_ENCODE_SECTION_INFO  i386_pe_encode_section_info
+#define SUBTARGET_ENCODE_SECTION_INFO  mingw_pe_encode_section_info
 
 /* Local and global relocs can be placed always into readonly memory
for PE-COFF targets.  */
@@ -235,7 +235,7 @@ do {
\
 #undef ASM_DECLARE_OBJECT_NAME
 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL)\
 do {   \
-  i386_pe_maybe_record_exported_symbol (DECL, NAME, 1);\
+  mingw_pe_maybe_record_exported_symbol (DECL, NAME, 1);   \
   ASM_OUTPUT_LABEL ((STREAM), (NAME)); \
 } while (0)
 
@@ -283,16 +283,16 @@ do {  \
 /* Windows uses explicit import from shared libraries.  */
 #define MULTIPLE_SYMBOL_SPACES 1
 
-#define TARGET_ASM_UNIQUE_SECTION i386_pe_unique_section
+#define TARGET_ASM_UNIQUE_SECTION mingw_pe_unique_section
 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
 
 #define SUPPORTS_ONE_ONLY 1
 
 /* Switch into a generic section.  */
-#define TARGET_ASM_NAMED_SECTION  i386_pe_asm_named_section
+#define TARGET_ASM_NAMED_SECTION  mingw_pe_asm_named_section
 
 /* Select attributes for named sections.  */
-#define TARGET_SECTION_TYPE_FLAGS  i386_pe_section_type_flags
+#define TARGET_SECTION_TYPE_FLAGS  mingw_pe_section_type_flags
 
 /* Write the extra assembler code needed to declare a function
properly.  */
@@ -307,7 +307,7 @@ do {\
 #define ASM_DECLARE_COLD_FUNCTION_NAME(FILE, NAME, DECL)   \
   do   \
 {  \
-  i386_pe_declare_function_type (FILE, NAME, 0);   \
+  mingw_pe_declare_function_type (FILE, NAME, 0);  \
   i386_pe_seh_cold_init (FILE, NAME);  \
   ASM_OUTPUT_LABEL (FILE, NAME);   \
 }  \
@@ -333,7 +333,7 @@ do {\
 
 /* Declare 

[PATCH v1 04/13] aarch64: Add aarch64-w64-mingw32 COFF

[Evgeny Karpov]

From 55fd2a63afa9abb3543d714b6f5925efd2682e08 Mon Sep 17 00:00:00 2001
From: Zac Walker 
Date: Wed, 21 Feb 2024 12:20:46 +0100
Subject: [PATCH v1 04/13] aarch64: Add aarch64-w64-mingw32 COFF

Define ASM specific for COFF format on AArch64.

gcc/ChangeLog:

* config.gcc: Add COFF format support definitions.
* config/aarch64/aarch64-coff.h: New file.
---
 gcc/config.gcc|  1 +
 gcc/config/aarch64/aarch64-coff.h | 92 +++
 2 files changed, 93 insertions(+)
 create mode 100644 gcc/config/aarch64/aarch64-coff.h

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 2a9e4c44f50..34c7be72fb6 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1264,6 +1264,7 @@ aarch64*-*-linux*)
TM_MULTILIB_CONFIG=`echo $TM_MULTILIB_CONFIG | sed 's/^,//'`
;;
 aarch64*-*-mingw*)
+   tm_file="${tm_file} aarch64/aarch64-coff.h"
tmake_file="${tmake_file} aarch64/t-aarch64"
case ${enable_threads} in
  "" | yes | win32)
diff --git a/gcc/config/aarch64/aarch64-coff.h 
b/gcc/config/aarch64/aarch64-coff.h
new file mode 100644
index 000..d91bc36b67b
--- /dev/null
+++ b/gcc/config/aarch64/aarch64-coff.h
@@ -0,0 +1,92 @@
+/* Machine description for AArch64 architecture.
+   Copyright (C) 2024 Free Software Foundation, Inc.
+
+   This file is part of GCC.
+
+   GCC is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   GCC is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GCC; see the file COPYING3.  If not see
+   .  */
+
+#ifndef GCC_AARCH64_COFF_H
+#define GCC_AARCH64_COFF_H
+
+#include "aarch64.h"
+
+#ifndef LOCAL_LABEL_PREFIX
+# define LOCAL_LABEL_PREFIX""
+#endif
+
+/* Using long long breaks -ansi and -std=c90, so these will need to be
+   made conditional for an LLP64 ABI.  */
+#undef SIZE_TYPE
+#define SIZE_TYPE  "long long unsigned int"
+
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE   "long long int"
+
+#define TARGET_64BIT 1
+#undef LONG_TYPE_SIZE
+#define LONG_TYPE_SIZE 32
+
+#ifndef ASM_GENERATE_INTERNAL_LABEL
+# define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)  \
+  sprintf (STRING, "*%s%s%u", LOCAL_LABEL_PREFIX, PREFIX, (unsigned int)(NUM))
+#endif
+
+#define ASM_OUTPUT_ALIGN(STREAM, POWER)\
+  fprintf (STREAM, "\t.align\t%d\n", (int)POWER)
+
+/* Output a common block.  */
+#ifndef ASM_OUTPUT_COMMON
+# define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)\
+{  \
+  fprintf (STREAM, "\t.comm\t");   \
+  assemble_name (STREAM, NAME);\
+  asm_fprintf (STREAM, ", %d, %d\n",   \
+  (int)(ROUNDED), (int)(SIZE));\
+}
+#endif
+
+/* Output a local common block.  /bin/as can't do this, so hack a
+   `.space' into the bss segment.  Note that this is *bad* practice,
+   which is guaranteed NOT to work since it doesn't define STATIC
+   COMMON space but merely STATIC BSS space.  */
+#ifndef ASM_OUTPUT_ALIGNED_LOCAL
+# define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN)   \
+{  \
+  switch_to_section (bss_section); \
+  ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT));   \
+  ASM_OUTPUT_LABEL (STREAM, NAME); \
+  fprintf (STREAM, "\t.space\t%d\n", (int)(SIZE)); \
+}
+#endif
+
+#define ASM_OUTPUT_SKIP(STREAM, NBYTES)\
+  fprintf (STREAM, "\t.space\t%d  // skip\n", (int) (NBYTES))
+
+#define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE)
+#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)
+
+#define TEXT_SECTION_ASM_OP"\t.text"
+#define DATA_SECTION_ASM_OP"\t.data"
+#define BSS_SECTION_ASM_OP "\t.bss"
+
+#define CTORS_SECTION_ASM_OP   "\t.section\t.ctors, \"aw\""
+#define DTORS_SECTION_ASM_OP   "\t.section\t.dtors, \"aw\""
+
+#define GLOBAL_ASM_OP "\t.global\t"
+
+#undef SUPPORTS_INIT_PRIORITY
+#define SUPPORTS_INIT_PRIORITY 0
+
+#endif
-- 
2.25.1

[PATCH v1 03/13] aarch64: Mark x18 register as a fixed register for MS ABI

[Evgeny Karpov]

From 72ca3f49e3eef9b18946b8d4e77019c1441e1a97 Mon Sep 17 00:00:00 2001
From: Zac Walker 
Date: Tue, 20 Feb 2024 15:30:33 +0100
Subject: [PATCH v1 03/13] aarch64: Mark x18 register as a fixed register for
 MS ABI

Define the MS ABI for aarch64-w64-mingw32.
Adjust FIXED_REGISTERS and STATIC_CHAIN_REGNUM for different ABIs.
The X18 register is reserved on Windows for the TEB.

gcc/ChangeLog:

* config.gcc: Define TARGET_ARM64_MS_ABI when Arm64 MS ABI is
used.
* config/aarch64/aarch64.h (FIXED_X18): Define if X18
regsiter is fixed.
(CALL_USED_X18): Define if X18 register is call used.
(FIXED_REGISTERS): Adjust FIXED_REGISTERS for different ABIs.
(STATIC_CHAIN_REGNUM): Define STATIC_CHAIN_REGNUM acording to
ABI.
---
 gcc/config.gcc   |  1 +
 gcc/config/aarch64/aarch64.h | 19 ---
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 092a091595d..2a9e4c44f50 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1276,6 +1276,7 @@ aarch64*-*-mingw*)
default_use_cxa_atexit=yes
need_64bit_isa=yes
user_headers_inc_next_post="${user_headers_inc_next_post} float.h"
+   tm_defines="${tm_defines} TARGET_ARM64_MS_ABI=1"
;;
 aarch64*-wrs-vxworks*)
 tm_file="${tm_file} elfos.h aarch64/aarch64-elf.h"
diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h
index 45e901cda64..36916e7a97d 100644
--- a/gcc/config/aarch64/aarch64.h
+++ b/gcc/config/aarch64/aarch64.h
@@ -536,11 +536,20 @@ constexpr auto AARCH64_FL_DEFAULT_ISA_MODE = 
AARCH64_FL_SM_OFF;
register.  GCC internally uses the poly_int variable aarch64_sve_vg
instead.  */
 
+/* X18 reserved for the TEB on Windows.  */
+#ifdef TARGET_ARM64_MS_ABI
+# define FIXED_X18 1
+# define CALL_USED_X18 0
+#else
+# define FIXED_X18 0
+# define CALL_USED_X18 1
+#endif
+
 #define FIXED_REGISTERS\
   {\
 0, 0, 0, 0,   0, 0, 0, 0,  /* R0 - R7 */   \
 0, 0, 0, 0,   0, 0, 0, 0,  /* R8 - R15 */  \
-0, 0, 0, 0,   0, 0, 0, 0,  /* R16 - R23 */ \
+0, 0, FIXED_X18, 0,   0, 0, 0, 0,  /* R16 - R23.  */   \
 0, 0, 0, 0,   0, 1, 0, 1,  /* R24 - R30, SP */ \
 0, 0, 0, 0,   0, 0, 0, 0,   /* V0 - V7 */   \
 0, 0, 0, 0,   0, 0, 0, 0,   /* V8 - V15 */ \
@@ -564,7 +573,7 @@ constexpr auto AARCH64_FL_DEFAULT_ISA_MODE = 
AARCH64_FL_SM_OFF;
   {\
 1, 1, 1, 1,   1, 1, 1, 1,  /* R0 - R7 */   \
 1, 1, 1, 1,   1, 1, 1, 1,  /* R8 - R15 */  \
-1, 1, 1, 0,   0, 0, 0, 0,  /* R16 - R23 */ \
+1, 1, CALL_USED_X18, 0, 0,   0, 0, 0, /* R16 - R23.  */   \
 0, 0, 0, 0,   0, 1, 1, 1,  /* R24 - R30, SP */ \
 1, 1, 1, 1,   1, 1, 1, 1,  /* V0 - V7 */   \
 0, 0, 0, 0,   0, 0, 0, 0,  /* V8 - V15 */  \
@@ -642,7 +651,11 @@ constexpr auto AARCH64_FL_DEFAULT_ISA_MODE = 
AARCH64_FL_SM_OFF;
uses alloca.  */
 #define EXIT_IGNORE_STACK  (cfun->calls_alloca)
 
-#define STATIC_CHAIN_REGNUMR18_REGNUM
+#ifdef TARGET_ARM64_MS_ABI
+# define STATIC_CHAIN_REGNUM   R17_REGNUM
+#else
+# define STATIC_CHAIN_REGNUM   R18_REGNUM
+#endif
 #define HARD_FRAME_POINTER_REGNUM  R29_REGNUM
 #define FRAME_POINTER_REGNUM   SFP_REGNUM
 #define STACK_POINTER_REGNUM   SP_REGNUM
-- 
2.25.1

[PATCH v1 02/13] aarch64: The aarch64-w64-mingw32 target implements

[Evgeny Karpov]

From 5cab07f01f66ba162b7d542e1a61c96f49942331 Mon Sep 17 00:00:00 2001
From: Zac Walker 
Date: Tue, 20 Feb 2024 15:32:08 +0100
Subject: [PATCH v1 02/13] aarch64: The aarch64-w64-mingw32 target implements
 the MS ABI

Two ABIs for aarch64 have been defined for different platforms.

gcc/ChangeLog:

* config/aarch64/aarch64-opts.h (enum calling_abi): Define
two ABIs.
---
 gcc/config/aarch64/aarch64-opts.h | 7 +++
 1 file changed, 7 insertions(+)

diff --git a/gcc/config/aarch64/aarch64-opts.h 
b/gcc/config/aarch64/aarch64-opts.h
index a05c0d3ded1..77e3eae9595 100644
--- a/gcc/config/aarch64/aarch64-opts.h
+++ b/gcc/config/aarch64/aarch64-opts.h
@@ -131,4 +131,11 @@ enum aarch64_early_ra_scope {
   AARCH64_EARLY_RA_NONE
 };
 
+/* Available call ABIs.  */
+enum calling_abi
+{
+  AARCH64_EABI = 0,
+  MS_ABI = 1
+};
+
 #endif
-- 
2.25.1

[PATCH v1 01/13] Introduce aarch64-w64-mingw32 target

[Evgeny Karpov]

From c5fec28077184119bc81d927e6062704c1796446 Mon Sep 17 00:00:00 2001
From: Zac Walker 
Date: Tue, 30 Jan 2024 06:42:46 +0100
Subject: [PATCH v1 01/13] Introduce aarch64-w64-mingw32 target

Add the initial aarch64-w64-mingw32 target for gcc.

fixincludes/ChangeLog:

* mkfixinc.sh: Extend for *-mingw32* targets.

gcc/ChangeLog:

* config.gcc: Add aarch64-w64-mingw32 target.
---
 fixincludes/mkfixinc.sh |  3 +--
 gcc/config.gcc  | 14 ++
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/fixincludes/mkfixinc.sh b/fixincludes/mkfixinc.sh
index df90720b716..7112f4dcd64 100755
--- a/fixincludes/mkfixinc.sh
+++ b/fixincludes/mkfixinc.sh
@@ -12,8 +12,7 @@ target=fixinc.sh
 # Check for special fix rules for particular targets
 case $machine in
 i?86-*-cygwin* | \
-i?86-*-mingw32* | \
-x86_64-*-mingw32* | \
+*-mingw32* | \
 powerpc-*-eabisim* | \
 powerpc-*-eabi*| \
 powerpc-*-rtems*   | \
diff --git a/gcc/config.gcc b/gcc/config.gcc
index a0f9c672308..092a091595d 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1263,6 +1263,20 @@ aarch64*-*-linux*)
done
TM_MULTILIB_CONFIG=`echo $TM_MULTILIB_CONFIG | sed 's/^,//'`
;;
+aarch64*-*-mingw*)
+   tmake_file="${tmake_file} aarch64/t-aarch64"
+   case ${enable_threads} in
+ "" | yes | win32)
+   thread_file='win32'
+   ;;
+ posix)
+   thread_file='posix'
+   ;;
+   esac
+   default_use_cxa_atexit=yes
+   need_64bit_isa=yes
+   user_headers_inc_next_post="${user_headers_inc_next_post} float.h"
+   ;;
 aarch64*-wrs-vxworks*)
 tm_file="${tm_file} elfos.h aarch64/aarch64-elf.h"
 tm_file="${tm_file} vx-common.h vxworks.h aarch64/aarch64-vxworks.h"
-- 
2.25.1

[PATCH v1 00/13] Add aarch64-w64-mingw32 target

[Evgeny Karpov]

Hello,

We would like to take your attention to the review of changes for the
new GCC target, aarch64-w64-mingw32. The new target will be
supported, tested, added to CI, and maintained by Linaro. This marks
the first of three planned patch series contributing to the GCC C
compiler's support for Windows Arm64.

1. Minimal aarch64-w64-mingw32 C implementation to cross-compile
hello-world with libgcc for Windows Arm64 using MinGW.
2. Extension of the aarch64-w64-mingw32 C implementation to
cross-compile OpenSSL, OpenBLAS, FFmpeg, and libjpeg-turbo. All
packages successfully pass tests.
3. Addition of call stack support for debugging, resolution of
optimization issues in the C compiler, and DLL export/import for the
aarch64-w64-mingw32 target.

This patch series introduces the 1st point, which involves building
hello-world for the aarch64-w64-mingw32 target. The patch depends on
the binutils changes for the aarch64-w64-mingw32 target that have
already been merged.

The binutils should include recent relocation fixes.
f87eaf8ff3995a5888c6dc4996a20c770e6bcd36
aarch64: Add new relocations and limit COFF AArch64 relocation offsets

The series is structured in a way to trivially show that it should not
affect any other targets.

In this patch, several changes have been made to support the
aarch64-w64-mingw32 target for GCC. The modifications include the
definition of the MS ABI for aarch64, adjustments to FIXED_REGISTERS
and STATIC_CHAIN_REGNUM for different ABIs, and specific definitions
for COFF format on AArch64. Additionally, the patch reuses MinGW
 types and definitions from i386, relocating them to a new
mingw folder for shared usage between both targets.

MinGW-specific options have been introduced for AArch64, along with
override options for aarch64-w64-mingw32. Builtin stack probing for
override options for aarch64-w64-mingw32. Builtin stack probing for
AArch64 has been enabled as an alternative for chkstk. Symbol name
encoding and section information handling for aarch64-w64-mingw32 have
been incorporated, and the MinGW environment has been added, which
will also be utilized for defining the Cygwin environment in the
future.

The patch includes renaming "x86 Windows Options" to "Cygwin and MinGW
Options," which now encompasses AArch64 as well. AArch64-specific
Cygwin and MinGW Options have been introduced for the unique
requirements of the AArch64 architecture.

Function type declaration and named sections support have been added.
The necessary objects for Cygwin and MinGW have been built for the
aarch64-w64-mingw32 target, and relevant files such as msformat-c.cc
and winnt-d.cc have been moved to the mingw folder for reuse in
AArch64.

Furthermore, the aarch64-w64-mingw32 target has been included in both
libatomic and libgcc, ensuring support for the AArch64 architecture
within these libraries. These changes collectively enhance the
capabilities of GCC for the specified target.

Coauthors: Zac Walker ,
Mark Harmstone   and
Ron Riddle 

Refactored, prepared, and validated by 
Radek Barton  and 
Evgeny Karpov 

Special thanks to the Linaro GNU toolchain team for internal review
and assistance in preparing the patch series!

Regards,
Evgeny


Zac Walker (13):
  Introduce aarch64-w64-mingw32 target
  aarch64: The aarch64-w64-mingw32 target implements the MS ABI
  aarch64: Mark x18 register as a fixed register for MS ABI
  aarch64: Add aarch64-w64-mingw32 COFF
  Reuse MinGW from i386 for AArch64
  Rename section and encoding functions from i386 which will be used in
aarch64
  Exclude i386 functionality from aarch64 build
  aarch64: Add Cygwin and MinGW environments for AArch64
  aarch64: Add SEH to machine_function
  Rename "x86 Windows Options" to "Cygwin and MinGW Options"
  aarch64: Build and add objects for Cygwin and MinGW for AArch64
  aarch64: Add aarch64-w64-mingw32 target to libatomic
  Add aarch64-w64-mingw32 target to libgcc

 fixincludes/mkfixinc.sh   |   3 +-
 gcc/config.gcc|  47 +++--
 gcc/config/aarch64/aarch64-coff.h |  92 +
 gcc/config/aarch64/aarch64-opts.h |   7 +
 gcc/config/aarch64/aarch64-protos.h   |   5 +
 gcc/config/aarch64/aarch64.h  |  25 ++-
 gcc/config/aarch64/cygming.h  | 178 ++
 gcc/config/i386/cygming.h |  18 +-
 gcc/config/i386/cygming.opt.urls  |  30 ---
 gcc/config/i386/i386-protos.h |  12 +-
 gcc/config/i386/mingw-w64.opt.urls|   2 +-
 gcc/config/lynx.opt.urls  |   2 +-
 gcc/config/{i386 => mingw}/cygming.opt|   0
 gcc/config/mingw/cygming.opt.urls |  30 +++
 gcc/config/{i386 => mingw}/cygwin-d.cc|   0
 gcc/config/{i386 => mingw}/mingw-stdint.h |   0
 gcc/config/{i386 => mingw}/mingw.opt  |   0
 gcc/config/{i386 => mingw}/mingw.opt.urls |   2 +-
 gcc/conf