Every supported version of the Solaris/x86 assembler supports
subtraction of symbols in different sections. Therefore the
HAVE_AS_IX86_DIFF_SECT_DELTA is always defined with both as and gas and
can be removed.
Bootstrapped without regressions on i386-pc-solaris2.11,
amd64-pc-solaris2.11 with both the original Solaris 11.4 as and the
current one, and x86_64-pc-linux-gnu.
Committed to trunk.
Rainer
--
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University
2026-06-25 Rainer Orth <[email protected]>
gcc:
* configure.ac (gcc_cv_as_ix86_diff_sect_delta): Remove.
* configure: Regenerate.
* config.in: Likewise.
* config/i386/sol2.h [!HAVE_AS_IX86_DIFF_SECT_DELTA]
(ASM_PREFERRED_EH_DATA_FORMAT): Remove.
(JUMP_TABLES_IN_TEXT_SECTION): Likewise.
(ASM_OUTPUT_DWARF_PCREL): Likewise.
# HG changeset patch
# Parent a7bf1d740035ac7a5f5406966ce57089168fc539
Remove HAVE_AS_IX86_DIFF_SECT_DELTA
diff --git a/gcc/config.in b/gcc/config.in
--- a/gcc/config.in
+++ b/gcc/config.in
@@ -513,13 +513,6 @@
#endif
-/* Define if your assembler supports the subtraction of symbols in different
- sections. */
-#ifndef USED_FOR_TARGET
-#undef HAVE_AS_IX86_DIFF_SECT_DELTA
-#endif
-
-
/* Define if your assembler supports the ffreep mnemonic. */
#ifndef USED_FOR_TARGET
#undef HAVE_AS_IX86_FFREEP
diff --git a/gcc/config/i386/sol2.h b/gcc/config/i386/sol2.h
--- a/gcc/config/i386/sol2.h
+++ b/gcc/config/i386/sol2.h
@@ -26,17 +26,6 @@ along with GCC; see the file COPYING3.
#undef STACK_REALIGN_DEFAULT
#define STACK_REALIGN_DEFAULT (TARGET_64BIT ? 0 : 1)
-/* Old versions of the Solaris assembler cannot handle the difference of
- labels in different sections, so force DW_EH_PE_datarel if so. */
-#ifndef HAVE_AS_IX86_DIFF_SECT_DELTA
-#undef ASM_PREFERRED_EH_DATA_FORMAT
-#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
- (flag_pic ? ((GLOBAL ? DW_EH_PE_indirect : 0) \
- | (TARGET_64BIT ? DW_EH_PE_pcrel | DW_EH_PE_sdata4 \
- : DW_EH_PE_datarel)) \
- : DW_EH_PE_absptr)
-#endif
-
/* The Solaris linker will not merge a read-only .eh_frame section
with a read-write .eh_frame section. None of the encodings used
with non-PIC code require runtime relocations. In 64-bit mode,
@@ -110,23 +99,6 @@ along with GCC; see the file COPYING3.
#undef ASM_QUAD
#endif
-/* The native Solaris assembler can't calculate the difference between
- symbols in different sections, which causes problems for -fPIC jump
- tables in .rodata. */
-#ifndef HAVE_AS_IX86_DIFF_SECT_DELTA
-#undef JUMP_TABLES_IN_TEXT_SECTION
-#define JUMP_TABLES_IN_TEXT_SECTION 1
-
-/* The native Solaris assembler cannot handle the SYMBOL-. syntax, but
- requires SYMBOL@rel/@rel64 instead. */
-#define ASM_OUTPUT_DWARF_PCREL(FILE, SIZE, LABEL) \
- do { \
- fputs (integer_asm_op (SIZE, FALSE), FILE); \
- assemble_name (FILE, LABEL); \
- fputs (SIZE == 8 ? "@rel64" : "@rel", FILE); \
- } while (0)
-#endif
-
/* The Solaris assembler wants a .local for non-exported aliases. */
#define ASM_OUTPUT_DEF_FROM_DECLS(FILE, DECL, TARGET) \
do { \
diff --git a/gcc/configure b/gcc/configure
--- a/gcc/configure
+++ b/gcc/configure
@@ -29836,44 +29836,6 @@ $as_echo "#define HAVE_AS_IX86_SWAP 1" >
fi
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for different section symbol subtraction" >&5
-$as_echo_n "checking assembler for different section symbol subtraction... " >&6; }
-if ${gcc_cv_as_ix86_diff_sect_delta+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- gcc_cv_as_ix86_diff_sect_delta=no
- if test x"$gcc_cv_as" != x; then
- $as_echo '.section .rodata
-.L1:
- .long .L2-.L1
- .long .L3-.L1
- .text
-.L3: nop
-.L2: nop' > conftest.s
- if { ac_try='$gcc_cv_as $gcc_cv_as_flags -o conftest.o conftest.s >&5'
- { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
- (eval $ac_try) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; }
- then
- gcc_cv_as_ix86_diff_sect_delta=yes
- else
- echo "configure: failed program was" >&5
- cat conftest.s >&5
- fi
- rm -f conftest.o conftest.s
- fi
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_ix86_diff_sect_delta" >&5
-$as_echo "$gcc_cv_as_ix86_diff_sect_delta" >&6; }
-if test $gcc_cv_as_ix86_diff_sect_delta = yes; then
-
-$as_echo "#define HAVE_AS_IX86_DIFF_SECT_DELTA 1" >>confdefs.h
-
-fi
-
-
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for rep and lock prefix" >&5
$as_echo_n "checking assembler for rep and lock prefix... " >&6; }
if ${gcc_cv_as_ix86_rep_lock_prefix+:} false; then :
diff --git a/gcc/configure.ac b/gcc/configure.ac
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -4950,18 +4950,6 @@ foo: nop
[AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
[Define if your assembler supports the swap suffix.])])
- gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
- gcc_cv_as_ix86_diff_sect_delta,,
- [.section .rodata
-.L1:
- .long .L2-.L1
- .long .L3-.L1
- .text
-.L3: nop
-.L2: nop],,
- [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
- [Define if your assembler supports the subtraction of symbols in different sections.])])
-
gcc_GAS_CHECK_FEATURE([rep and lock prefix],
gcc_cv_as_ix86_rep_lock_prefix,,
[rep movsl
