Hi,
We are in the process of adding support for new architecture
'ppc64le' (PowerPC 64 Little Endian) and as part of that, We have worked
with libtool maintainer to get alpha release (links below) which has all
the needed bits to support building on ppc64le arch.
ftp://alpha.gnu.org/gnu/libtool/libtool-2.4.2.418.tar.gz(1.6MB)
ftp://alpha.gnu.org/gnu/libtool/libtool-2.4.2.418.tar.xz(920KB)
(A stable libtool release is expected soon this year)
' libunwind-1.1' didn't build on 'ppc64le' system because of outdated
libtoo.m4/configure/config.guess files.
hence we request you to use latest libtool alpha release and spin off a
new version of 'libcap-ng' package.
So that we can test ppc64le fixes.
Latest 'libunwind' source package we picked is from :
http://download.savannah.gnu.org/releases/libunwind/libunwind-1.1.tar.gz
Along with above change to build machine, we have found a patch
available in ubuntu, which is required to build 'unwind' successfully on
'ppc64le' system.
Im attaching the patch which is also available at ubuntu src repo ...
Your response is highly appreciated
--
Ravindran
IBM LinuxTechnologyCenter
Index: b/configure.ac
===================================================================
--- a/configure.ac
+++ b/configure.ac
@@ -165,12 +165,6 @@
AM_CONDITIONAL(USE_DWARF, [test x$use_dwarf = xyes])
AC_MSG_RESULT([$use_dwarf])
-if test x$target_arch = xppc64; then
- libdir='${exec_prefix}/lib64'
- AC_MSG_NOTICE([PowerPC64 detected, lib will be installed ${libdir}]);
- AC_SUBST([libdir])
-fi
-
AC_MSG_CHECKING([whether to restrict build to remote support])
if test x$target_arch != x$host_arch; then
CPPFLAGS="${CPPFLAGS} -DUNW_REMOTE_ONLY"
Index: b/src/Makefile.am
===================================================================
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -331,12 +331,12 @@
x86_64/Gstash_frame.c x86_64/Gstep.c x86_64/Gtrace.c
# The list of local files that go to Power 64 and 32:
-libunwind_la_SOURCES_ppc = ppc/Lcreate_addr_space.c \
+libunwind_la_SOURCES_ppc = \
ppc/Lget_proc_info.c ppc/Lget_save_loc.c ppc/Linit_local.c \
ppc/Linit_remote.c ppc/Lis_signal_frame.c
# The list of generic files that go to Power 64 and 32:
-libunwind_ppc_la_SOURCES_ppc_generic = ppc/Gcreate_addr_space.c \
+libunwind_ppc_la_SOURCES_ppc_generic = \
ppc/Gget_proc_info.c ppc/Gget_save_loc.c ppc/Ginit_local.c \
ppc/Ginit_remote.c ppc/Gis_signal_frame.c
@@ -349,6 +349,7 @@
libunwind_la_SOURCES_ppc32 = $(libunwind_la_SOURCES_ppc32_common) \
$(libunwind_la_SOURCES_local) \
$(libunwind_la_SOURCES_ppc) \
+ ppc32/Lcreate_addr_space.c \
ppc32/Lglobal.c ppc32/Linit.c \
ppc32/Lregs.c ppc32/Lresume.c ppc32/Lstep.c
@@ -356,6 +357,7 @@
libunwind_ppc32_la_SOURCES_ppc32 = $(libunwind_la_SOURCES_ppc32_common) \
$(libunwind_la_SOURCES_generic) \
$(libunwind_ppc_la_SOURCES_ppc_generic) \
+ ppc32/Gcreate_addr_space.c \
ppc32/Gglobal.c ppc32/Ginit.c \
ppc32/Gregs.c ppc32/Gresume.c ppc32/Gstep.c
@@ -368,6 +370,7 @@
libunwind_la_SOURCES_ppc64 = $(libunwind_la_SOURCES_ppc64_common) \
$(libunwind_la_SOURCES_local) \
$(libunwind_la_SOURCES_ppc) \
+ ppc64/Lcreate_addr_space.c \
ppc64/Lglobal.c ppc64/Linit.c \
ppc64/Lregs.c ppc64/Lresume.c ppc64/Lstep.c
@@ -375,6 +378,7 @@
libunwind_ppc64_la_SOURCES_ppc64 = $(libunwind_la_SOURCES_ppc64_common) \
$(libunwind_la_SOURCES_generic) \
$(libunwind_ppc_la_SOURCES_ppc_generic) \
+ ppc64/Gcreate_addr_space.c \
ppc64/Gglobal.c ppc64/Ginit.c \
ppc64/Gregs.c ppc64/Gresume.c ppc64/Gstep.c
@@ -557,6 +561,7 @@
libunwind_ppc64_la_LDFLAGS = $(COMMON_SO_LDFLAGS) -version-info $(SOVERSION)
libunwind_ppc64_la_LIBADD = libunwind-dwarf-generic.la
libunwind_ppc64_la_LIBADD += libunwind-elf64.la
+ libunwind_ppc64_la_LIBADD += $(LIBLZMA)
if !REMOTE_ONLY
libunwind_ppc64_la_LIBADD += libunwind.la -lc
endif
Index: b/tests/Makefile.am
===================================================================
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -193,3 +193,5 @@
Lia64_test_readonly_LDADD = $(LIBUNWIND_local)
ia64_test_dyn1_LDADD = $(LIBUNWIND)
ia64_test_sig_LDADD = $(LIBUNWIND)
+ppc64_test_altivec_LDADD = $(LIBUNWIND)
+
Index: b/include/libunwind-ppc64.h
===================================================================
--- a/include/libunwind-ppc64.h
+++ b/include/libunwind-ppc64.h
@@ -222,6 +222,13 @@
}
ppc64_regnum_t;
+typedef enum
+ {
+ UNW_PPC64_ABI_ELFv1,
+ UNW_PPC64_ABI_ELFv2
+ }
+ppc64_abi_t;
+
/*
* According to David Edelsohn, GNU gcc uses R3, R4, R5, and maybe R6 for
* passing parameters to exception handlers.
Index: b/include/tdep-ppc64/dwarf-config.h
===================================================================
--- a/include/tdep-ppc64/dwarf-config.h
+++ b/include/tdep-ppc64/dwarf-config.h
@@ -38,7 +38,7 @@
#define DWARF_REGNUM_MAP_LENGTH 115
/* Return TRUE if the ADDR_SPACE uses big-endian byte-order. */
-#define dwarf_is_big_endian(addr_space) 1
+#define dwarf_is_big_endian(addr_space) ((addr_space)->big_endian)
/* Convert a pointer to a dwarf_cursor structure to a pointer to
unw_cursor_t. */
Index: b/include/tdep-ppc64/libunwind_i.h
===================================================================
--- a/include/tdep-ppc64/libunwind_i.h
+++ b/include/tdep-ppc64/libunwind_i.h
@@ -51,6 +51,8 @@
struct unw_addr_space
{
struct unw_accessors acc;
+ int big_endian;
+ ppc64_abi_t abi;
unw_caching_policy_t caching_policy;
#ifdef HAVE_ATOMIC_OPS_H
AO_t cache_generation;
@@ -289,7 +291,7 @@
#define tdep_get_as(c) ((c)->dwarf.as)
#define tdep_get_as_arg(c) ((c)->dwarf.as_arg)
#define tdep_get_ip(c) ((c)->dwarf.ip)
-#define tdep_big_endian(as) 1
+#define tdep_big_endian(as) ((as)->big_endian)
extern int tdep_init_done;
Index: b/src/dwarf/Gexpr.c
===================================================================
--- a/src/dwarf/Gexpr.c
+++ b/src/dwarf/Gexpr.c
@@ -212,12 +212,13 @@
})
# define push(x) \
do { \
+ unw_word_t _x = (x); \
if (tos >= MAX_EXPR_STACK_SIZE) \
{ \
Debug (1, "Stack overflow\n"); \
return -UNW_EINVAL; \
} \
- stack[tos++] = (x); \
+ stack[tos++] = _x; \
} while (0)
# define pick(n) \
({ \
Index: b/src/elfxx.c
===================================================================
--- a/src/elfxx.c
+++ b/src/elfxx.c
@@ -128,10 +128,11 @@
if (ELF_W (ST_TYPE) (sym->st_info) == STT_FUNC
&& sym->st_shndx != SHN_UNDEF)
{
- if (tdep_get_func_addr (as, sym->st_value, &val) < 0)
- continue;
+ val = sym->st_value;
if (sym->st_shndx != SHN_ABS)
val += load_offset;
+ if (tdep_get_func_addr (as, val, &val) < 0)
+ continue;
Debug (16, "0x%016lx info=0x%02x %s\n",
(long) val, sym->st_info, strtab + sym->st_name);
Index: b/src/ppc/Gcreate_addr_space.c
===================================================================
--- a/src/ppc/Gcreate_addr_space.c
+++ /dev/null
@@ -1,56 +0,0 @@
-/* libunwind - a platform-independent unwind library
- Copyright (C) 2006-2007 IBM
- Contributed by
- Corey Ashford <[email protected]>
- Jose Flavio Aguilar Paulino <[email protected]> <[email protected]>
-
-This file is part of libunwind.
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
-
-#include <stdlib.h>
-
-#include <libunwind_i.h>
-
-PROTECTED unw_addr_space_t
-unw_create_addr_space (unw_accessors_t *a, int byte_order)
-{
-#ifdef UNW_LOCAL_ONLY
- return NULL;
-#else
- unw_addr_space_t as;
-
- /*
- * Linux ppc64 supports only big-endian.
- */
- if (byte_order != 0 && byte_order != __BIG_ENDIAN)
- return NULL;
-
- as = malloc (sizeof (*as));
- if (!as)
- return NULL;
-
- memset (as, 0, sizeof (*as));
-
- as->acc = *a;
-
- return as;
-#endif
-}
Index: b/src/ppc/Gis_signal_frame.c
===================================================================
--- a/src/ppc/Gis_signal_frame.c
+++ b/src/ppc/Gis_signal_frame.c
@@ -31,7 +31,7 @@
unw_is_signal_frame (unw_cursor_t * cursor)
{
struct cursor *c = (struct cursor *) cursor;
- unw_word_t w0, w1, ip;
+ unw_word_t w0, w1, i0, i1, i2, ip;
unw_addr_space_t as;
unw_accessors_t *a;
void *arg;
@@ -60,7 +60,19 @@
if ((ret = (*a->access_mem) (as, ip, &w0, 0, arg)) < 0
|| (ret = (*a->access_mem) (as, ip + 8, &w1, 0, arg)) < 0)
return 0;
- w1 >>= 32;
- return (w0 == 0x38210080380000ac && w1 == 0x44000002);
+ if (tdep_big_endian (as))
+ {
+ i0 = w0 >> 32;
+ i1 = w0 & 0xffffffffUL;
+ i2 = w1 >> 32;
+ }
+ else
+ {
+ i0 = w0 & 0xffffffffUL;
+ i1 = w0 >> 32;
+ i2 = w1 & 0xffffffffUL;
+ }
+
+ return (i0 == 0x38210080 && i1 == 0x380000ac && i2 == 0x44000002);
}
Index: b/src/ppc/Lcreate_addr_space.c
===================================================================
--- a/src/ppc/Lcreate_addr_space.c
+++ /dev/null
@@ -1,5 +0,0 @@
-#define UNW_LOCAL_ONLY
-#include <libunwind.h>
-#if defined(UNW_LOCAL_ONLY) && !defined(UNW_REMOTE_ONLY)
-#include "Gcreate_addr_space.c"
-#endif
Index: b/src/ppc32/Gcreate_addr_space.c
===================================================================
--- /dev/null
+++ b/src/ppc32/Gcreate_addr_space.c
@@ -0,0 +1,56 @@
+/* libunwind - a platform-independent unwind library
+ Copyright (C) 2006-2007 IBM
+ Contributed by
+ Corey Ashford <[email protected]>
+ Jose Flavio Aguilar Paulino <[email protected]> <[email protected]>
+
+This file is part of libunwind.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
+
+#include <stdlib.h>
+
+#include <libunwind_i.h>
+
+PROTECTED unw_addr_space_t
+unw_create_addr_space (unw_accessors_t *a, int byte_order)
+{
+#ifdef UNW_LOCAL_ONLY
+ return NULL;
+#else
+ unw_addr_space_t as;
+
+ /*
+ * We support only big-endian on Linux ppc32.
+ */
+ if (byte_order != 0 && byte_order != __BIG_ENDIAN)
+ return NULL;
+
+ as = malloc (sizeof (*as));
+ if (!as)
+ return NULL;
+
+ memset (as, 0, sizeof (*as));
+
+ as->acc = *a;
+
+ return as;
+#endif
+}
Index: b/src/ppc32/Lcreate_addr_space.c
===================================================================
--- /dev/null
+++ b/src/ppc32/Lcreate_addr_space.c
@@ -0,0 +1,5 @@
+#define UNW_LOCAL_ONLY
+#include <libunwind.h>
+#if defined(UNW_LOCAL_ONLY) && !defined(UNW_REMOTE_ONLY)
+#include "Gcreate_addr_space.c"
+#endif
Index: b/src/ppc64/Gcreate_addr_space.c
===================================================================
--- /dev/null
+++ b/src/ppc64/Gcreate_addr_space.c
@@ -0,0 +1,71 @@
+/* libunwind - a platform-independent unwind library
+ Copyright (C) 2006-2007 IBM
+ Contributed by
+ Corey Ashford <[email protected]>
+ Jose Flavio Aguilar Paulino <[email protected]> <[email protected]>
+
+This file is part of libunwind.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
+
+#include <stdlib.h>
+
+#include <libunwind_i.h>
+
+PROTECTED unw_addr_space_t
+unw_create_addr_space (unw_accessors_t *a, int byte_order)
+{
+#ifdef UNW_LOCAL_ONLY
+ return NULL;
+#else
+ unw_addr_space_t as;
+
+ /*
+ * We support both big- and little-endian on Linux ppc64.
+ */
+ if (byte_order != 0
+ && byte_order != __LITTLE_ENDIAN
+ && byte_order != __BIG_ENDIAN)
+ return NULL;
+
+ as = malloc (sizeof (*as));
+ if (!as)
+ return NULL;
+
+ memset (as, 0, sizeof (*as));
+
+ as->acc = *a;
+
+ if (byte_order == 0)
+ /* use host default: */
+ as->big_endian = (__BYTE_ORDER == __BIG_ENDIAN);
+ else
+ as->big_endian = (byte_order == __BIG_ENDIAN);
+
+ /* FIXME! There is no way to specify the ABI.
+ Default to ELFv1 on big-endian and ELFv2 on little-endian. */
+ if (as->big_endian)
+ as->abi = UNW_PPC64_ABI_ELFv1;
+ else
+ as->abi = UNW_PPC64_ABI_ELFv2;
+
+ return as;
+#endif
+}
Index: b/src/ppc64/Ginit.c
===================================================================
--- a/src/ppc64/Ginit.c
+++ b/src/ppc64/Ginit.c
@@ -210,6 +210,12 @@
ppc64_local_addr_space_init (void)
{
memset (&local_addr_space, 0, sizeof (local_addr_space));
+ local_addr_space.big_endian = (__BYTE_ORDER == __BIG_ENDIAN);
+#if _CALL_ELF == 2
+ local_addr_space.abi = UNW_PPC64_ABI_ELFv2;
+#else
+ local_addr_space.abi = UNW_PPC64_ABI_ELFv1;
+#endif
local_addr_space.caching_policy = UNW_CACHE_GLOBAL;
local_addr_space.acc.find_proc_info = dwarf_find_proc_info;
local_addr_space.acc.put_unwind_info = put_unwind_info;
Index: b/src/ppc64/Lcreate_addr_space.c
===================================================================
--- /dev/null
+++ b/src/ppc64/Lcreate_addr_space.c
@@ -0,0 +1,5 @@
+#define UNW_LOCAL_ONLY
+#include <libunwind.h>
+#if defined(UNW_LOCAL_ONLY) && !defined(UNW_REMOTE_ONLY)
+#include "Gcreate_addr_space.c"
+#endif
Index: b/src/ppc64/get_func_addr.c
===================================================================
--- a/src/ppc64/get_func_addr.c
+++ b/src/ppc64/get_func_addr.c
@@ -31,15 +31,21 @@
tdep_get_func_addr (unw_addr_space_t as, unw_word_t addr,
unw_word_t *entry_point)
{
- unw_accessors_t *a;
- int ret;
+ if (as->abi == UNW_PPC64_ABI_ELFv1)
+ {
+ unw_accessors_t *a;
+ int ret;
+
+ a = unw_get_accessors (as);
+ /* Entry-point is stored in the 1st word of the function descriptor.
+ In case that changes in the future, we'd have to update the line
+ below and read the word at addr + offset: */
+ ret = (*a->access_mem) (as, addr, entry_point, 0, NULL);
+ if (ret < 0)
+ return ret;
+ }
+ else
+ *entry_point = addr;
- a = unw_get_accessors (as);
- /* Entry-point is stored in the 1st word of the function descriptor.
- In case that changes in the future, we'd have to update the line
- below and read the word at addr + offset: */
- ret = (*a->access_mem) (as, addr, entry_point, 0, NULL);
- if (ret < 0)
- return ret;
return 0;
}
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