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Commit 4f6d8cc8 by Geoffrey Keating Committed by Geoffrey Keating
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Index: gcc/ChangeLog 

2006-06-02  Geoffrey Keating  <geoffk@apple.com>

	* config/rs6000/host-darwin.c (sigaltstack): Protect prototype with
	HAVE_DECL_SIGALTSTACK.
	(MC_FLD): New.
	(segv_handler): Use MC_FLD.
	* configure.ac: Check for a sigaltstack declaration.
	Compute HAS_MCONTEXT_T_UNDERSCORES on Darwin.
	* configure: Regenerate.
	* config.in: Regenerate.

Index: boehm-gc/ChangeLog
2006-06-02  Geoffrey Keating  <geoffk@apple.com>

	* configure.ac: Define HAS_PPC_THREAD_STATE_R0,
	HAS_PPC_THREAD_STATE___R0, HAS_PPC_THREAD_STATE64_R0,
	HAS_PPC_THREAD_STATE64___R0, HAS_I386_THREAD_STATE_EAX,
	HAS_I386_THREAD_STATE___EAX.
	* configure: Regenerate.
	* include/gc_config.h.in: Regenerate.
	* darwin_stop_world.c (PPC_RED_ZONE_SIZE): Use standard Darwin
	macro names to determine value.
	(THREAD_STATE): New.
	(THREAD_FLD): New.
	(GC_push_all_stacks): Use THREAD_STATE and THREAD_FLD in both versions.

From-SVN: r114339
parent 347b9c46
Showing with 387 additions and 100 deletions
boehm-gc/ChangeLog
2006-06-02 Geoffrey Keating <geoffk@apple.com>
* configure.ac: Define HAS_PPC_THREAD_STATE_R0,
HAS_PPC_THREAD_STATE___R0, HAS_PPC_THREAD_STATE64_R0,
HAS_PPC_THREAD_STATE64___R0, HAS_I386_THREAD_STATE_EAX,
HAS_I386_THREAD_STATE___EAX.
* configure: Regenerate.
* include/gc_config.h.in: Regenerate.
* darwin_stop_world.c (PPC_RED_ZONE_SIZE): Use standard Darwin
macro names to determine value.
(THREAD_STATE): New.
(THREAD_FLD): New.
(GC_push_all_stacks): Use THREAD_STATE and THREAD_FLD in both versions.
2006-05-24 Carlos O'Donell <carlos@codesourcery.com>
* Makefile.am: Add install-html target.
......
boehm-gc/configure.ac
......@@ -232,6 +232,39 @@ case "$host" in
esac
AM_CONDITIONAL(POWERPC_DARWIN,test x$powerpc_darwin = xtrue)
# Darwin needs a few extra special tests to deal with variation in the
# system headers.
case "$host" in
powerpc*-*-darwin*)
AC_CHECK_MEMBER(ppc_thread_state_t.r0,
AC_DEFINE(HAS_PPC_THREAD_STATE_R0,,[ppc_thread_state_t has field r0]),,
[#include <mach/thread_status.h>])
AC_CHECK_MEMBER(ppc_thread_state_t.__r0,
AC_DEFINE(HAS_PPC_THREAD_STATE___R0,,dnl
[ppc_thread_state_t has field __r0]),,
[#include <mach/thread_status.h>])
AC_CHECK_MEMBER(ppc_thread_state64_t.r0,
AC_DEFINE(HAS_PPC_THREAD_STATE64_R0,,dnl
[ppc_thread_state64_t has field r0]),,
[#include <mach/thread_status.h>])
AC_CHECK_MEMBER(ppc_thread_state64_t.__r0,
AC_DEFINE(HAS_PPC_THREAD_STATE64___R0,,dnl
[ppc_thread_state64_t has field __r0]),,
[#include <mach/thread_status.h>])
;;
i?86*-*-darwin*)
AC_CHECK_MEMBER(i386_thread_state_t.eax,
AC_DEFINE(HAS_I386_THREAD_STATE_EAX,,dnl
[i386_thread_state_t has field eax]),,
[#include <mach/thread_status.h>])
AC_CHECK_MEMBER(i386_thread_state_t.__eax,
AC_DEFINE(HAS_I386_THREAD_STATE___EAX,,dnl
[i386_thread_state_t has field __eax]),,
[#include <mach/thread_status.h>])
;;
*) ;;
esac
# We never want libdl on darwin. It is a fake libdl that just ends up making
# dyld calls anyway
case "$host" in
......
boehm-gc/darwin_stop_world.c
......@@ -14,12 +14,43 @@
Page 50: "If a leaf procedure's red zone usage would exceed 224 bytes, then
it must set up a stack frame just like routines that call other routines."
*/
#ifdef POWERPC
# if CPP_WORDSZ == 32
# define PPC_RED_ZONE_SIZE 224
# elif CPP_WORDSZ == 64
# define PPC_RED_ZONE_SIZE 320
#if defined(__ppc__)
# define PPC_RED_ZONE_SIZE 224
#elif defined(__ppc64__)
# define PPC_RED_ZONE_SIZE 320
#endif
/* Try to work out the right way to access thread state structure members.
The structure has changed its definition in different Darwin versions. */
#if defined(__ppc__)
# define THREAD_STATE ppc_thread_state_t
# if defined (HAS_PPC_THREAD_STATE_R0)
# define THREAD_FLD(x) x
# elif defined (HAS_PPC_THREAD_STATE___R0)
# define THREAD_FLD(x) __ ## x
# else
# error can not work out how to access fields of ppc_thread_state_t
# endif
#elif defined(__ppc64__)
# define THREAD_STATE ppc_thread_state64_t
# if defined (HAS_PPC_THREAD_STATE64_R0)
# define THREAD_FLD(x) x
# elif defined (HAS_PPC_THREAD_STATE64___R0)
# define THREAD_FLD(x) __ ## x
# else
# error can not work out how to access fields of ppc_thread_state64_t
# endif
#elif defined(__i386__)
# define THREAD_STATE i386_thread_state_t
# if defined (HAS_I386_THREAD_STATE_EAX)
# define THREAD_FLD(x) x
# elif defined (HAS_I386_THREAD_STATE___EAX)
# define THREAD_FLD(x) __ ## x
# else
# error can not work out how to access fields of i386_thread_state_t
# endif
#else
# error unknown architecture
#endif
typedef struct StackFrame {
......@@ -75,7 +106,7 @@ void GC_push_all_stacks() {
GC_thread p;
pthread_t me;
ptr_t lo, hi;
ppc_thread_state_t state;
THREAD_STATE state;
mach_msg_type_number_t thread_state_count = MACHINE_THREAD_STATE_COUNT;
me = pthread_self();
......@@ -95,39 +126,39 @@ void GC_push_all_stacks() {
&thread_state_count);
if(r != KERN_SUCCESS) ABORT("thread_get_state failed");
lo = (void*)(state.r1 - PPC_RED_ZONE_SIZE);
lo = (void*)(state . THREAD_FLD (r1) - PPC_RED_ZONE_SIZE);
GC_push_one(state.r0);
GC_push_one(state.r2);
GC_push_one(state.r3);
GC_push_one(state.r4);
GC_push_one(state.r5);
GC_push_one(state.r6);
GC_push_one(state.r7);
GC_push_one(state.r8);
GC_push_one(state.r9);
GC_push_one(state.r10);
GC_push_one(state.r11);
GC_push_one(state.r12);
GC_push_one(state.r13);
GC_push_one(state.r14);
GC_push_one(state.r15);
GC_push_one(state.r16);
GC_push_one(state.r17);
GC_push_one(state.r18);
GC_push_one(state.r19);
GC_push_one(state.r20);
GC_push_one(state.r21);
GC_push_one(state.r22);
GC_push_one(state.r23);
GC_push_one(state.r24);
GC_push_one(state.r25);
GC_push_one(state.r26);
GC_push_one(state.r27);
GC_push_one(state.r28);
GC_push_one(state.r29);
GC_push_one(state.r30);
GC_push_one(state.r31);
GC_push_one(state . THREAD_FLD (r0));
GC_push_one(state . THREAD_FLD (r2));
GC_push_one(state . THREAD_FLD (r3));
GC_push_one(state . THREAD_FLD (r4));
GC_push_one(state . THREAD_FLD (r5));
GC_push_one(state . THREAD_FLD (r6));
GC_push_one(state . THREAD_FLD (r7));
GC_push_one(state . THREAD_FLD (r8));
GC_push_one(state . THREAD_FLD (r9));
GC_push_one(state . THREAD_FLD (r10));
GC_push_one(state . THREAD_FLD (r11));
GC_push_one(state . THREAD_FLD (r12));
GC_push_one(state . THREAD_FLD (r13));
GC_push_one(state . THREAD_FLD (r14));
GC_push_one(state . THREAD_FLD (r15));
GC_push_one(state . THREAD_FLD (r16));
GC_push_one(state . THREAD_FLD (r17));
GC_push_one(state . THREAD_FLD (r18));
GC_push_one(state . THREAD_FLD (r19));
GC_push_one(state . THREAD_FLD (r20));
GC_push_one(state . THREAD_FLD (r21));
GC_push_one(state . THREAD_FLD (r22));
GC_push_one(state . THREAD_FLD (r23));
GC_push_one(state . THREAD_FLD (r24));
GC_push_one(state . THREAD_FLD (r25));
GC_push_one(state . THREAD_FLD (r26));
GC_push_one(state . THREAD_FLD (r27));
GC_push_one(state . THREAD_FLD (r28));
GC_push_one(state . THREAD_FLD (r29));
GC_push_one(state . THREAD_FLD (r30));
GC_push_one(state . THREAD_FLD (r31));
} /* p != me */
if(p->flags & MAIN_THREAD)
hi = GC_stackbottom;
......@@ -166,78 +197,74 @@ void GC_push_all_stacks() {
lo = GC_approx_sp();
hi = (ptr_t)FindTopOfStack(0);
} else {
# if defined(POWERPC)
# if CPP_WORDSZ == 32
ppc_thread_state_t info;
# else
ppc_thread_state64_t info;
# endif
# if defined(__ppc__) || defined(__ppc64__)
THREAD_STATE info;
mach_msg_type_number_t outCount = THREAD_STATE_MAX;
r = thread_get_state(thread, MACHINE_THREAD_STATE,
(natural_t *)&info, &outCount);
if(r != KERN_SUCCESS) ABORT("task_get_state failed");
lo = (void*)(info.r1 - PPC_RED_ZONE_SIZE);
hi = (ptr_t)FindTopOfStack(info.r1);
GC_push_one(info.r0);
GC_push_one(info.r2);
GC_push_one(info.r3);
GC_push_one(info.r4);
GC_push_one(info.r5);
GC_push_one(info.r6);
GC_push_one(info.r7);
GC_push_one(info.r8);
GC_push_one(info.r9);
GC_push_one(info.r10);
GC_push_one(info.r11);
GC_push_one(info.r12);
GC_push_one(info.r13);
GC_push_one(info.r14);
GC_push_one(info.r15);
GC_push_one(info.r16);
GC_push_one(info.r17);
GC_push_one(info.r18);
GC_push_one(info.r19);
GC_push_one(info.r20);
GC_push_one(info.r21);
GC_push_one(info.r22);
GC_push_one(info.r23);
GC_push_one(info.r24);
GC_push_one(info.r25);
GC_push_one(info.r26);
GC_push_one(info.r27);
GC_push_one(info.r28);
GC_push_one(info.r29);
GC_push_one(info.r30);
GC_push_one(info.r31);
lo = (void*)(info . THREAD_FLD (r1) - PPC_RED_ZONE_SIZE);
hi = (ptr_t)FindTopOfStack(info . THREAD_FLD (r1));
GC_push_one(info . THREAD_FLD (r0));
GC_push_one(info . THREAD_FLD (r2));
GC_push_one(info . THREAD_FLD (r3));
GC_push_one(info . THREAD_FLD (r4));
GC_push_one(info . THREAD_FLD (r5));
GC_push_one(info . THREAD_FLD (r6));
GC_push_one(info . THREAD_FLD (r7));
GC_push_one(info . THREAD_FLD (r8));
GC_push_one(info . THREAD_FLD (r9));
GC_push_one(info . THREAD_FLD (r10));
GC_push_one(info . THREAD_FLD (r11));
GC_push_one(info . THREAD_FLD (r12));
GC_push_one(info . THREAD_FLD (r13));
GC_push_one(info . THREAD_FLD (r14));
GC_push_one(info . THREAD_FLD (r15));
GC_push_one(info . THREAD_FLD (r16));
GC_push_one(info . THREAD_FLD (r17));
GC_push_one(info . THREAD_FLD (r18));
GC_push_one(info . THREAD_FLD (r19));
GC_push_one(info . THREAD_FLD (r20));
GC_push_one(info . THREAD_FLD (r21));
GC_push_one(info . THREAD_FLD (r22));
GC_push_one(info . THREAD_FLD (r23));
GC_push_one(info . THREAD_FLD (r24));
GC_push_one(info . THREAD_FLD (r25));
GC_push_one(info . THREAD_FLD (r26));
GC_push_one(info . THREAD_FLD (r27));
GC_push_one(info . THREAD_FLD (r28));
GC_push_one(info . THREAD_FLD (r29));
GC_push_one(info . THREAD_FLD (r30));
GC_push_one(info . THREAD_FLD (r31));
# else
/* FIXME: Remove after testing: */
WARN("This is completely untested and likely will not work\n", 0);
i386_thread_state_t info;
THREAD_STATE info;
mach_msg_type_number_t outCount = THREAD_STATE_MAX;
r = thread_get_state(thread, MACHINE_THREAD_STATE,
(natural_t *)&info, &outCount);
if(r != KERN_SUCCESS) ABORT("task_get_state failed");
lo = (void*)info.esp;
hi = (ptr_t)FindTopOfStack(info.esp);
GC_push_one(info.eax);
GC_push_one(info.ebx);
GC_push_one(info.ecx);
GC_push_one(info.edx);
GC_push_one(info.edi);
GC_push_one(info.esi);
/* GC_push_one(info.ebp); */
/* GC_push_one(info.esp); */
GC_push_one(info.ss);
GC_push_one(info.eip);
GC_push_one(info.cs);
GC_push_one(info.ds);
GC_push_one(info.es);
GC_push_one(info.fs);
GC_push_one(info.gs);
lo = (void*)info . THREAD_FLD (esp);
hi = (ptr_t)FindTopOfStack(info . THREAD_FLD (esp));
GC_push_one(info . THREAD_FLD (eax));
GC_push_one(info . THREAD_FLD (ebx));
GC_push_one(info . THREAD_FLD (ecx));
GC_push_one(info . THREAD_FLD (edx));
GC_push_one(info . THREAD_FLD (edi));
GC_push_one(info . THREAD_FLD (esi));
/* GC_push_one(info . THREAD_FLD (ebp)); */
/* GC_push_one(info . THREAD_FLD (esp)); */
GC_push_one(info . THREAD_FLD (ss));
GC_push_one(info . THREAD_FLD (eip));
GC_push_one(info . THREAD_FLD (cs));
GC_push_one(info . THREAD_FLD (ds));
GC_push_one(info . THREAD_FLD (es));
GC_push_one(info . THREAD_FLD (fs));
GC_push_one(info . THREAD_FLD (gs));
# endif /* !POWERPC */
}
# if DEBUG_THREADS
......
boehm-gc/include/gc_config.h.in
......@@ -57,6 +57,24 @@
/* support for win32 threads */
#undef GC_WIN32_THREADS
/* i386_thread_state_t has field eax */
#undef HAS_I386_THREAD_STATE_EAX
/* i386_thread_state_t has field __eax */
#undef HAS_I386_THREAD_STATE___EAX
/* ppc_thread_state64_t has field r0 */
#undef HAS_PPC_THREAD_STATE64_R0
/* ppc_thread_state64_t has field __r0 */
#undef HAS_PPC_THREAD_STATE64___R0
/* ppc_thread_state_t has field r0 */
#undef HAS_PPC_THREAD_STATE_R0
/* ppc_thread_state_t has field __r0 */
#undef HAS_PPC_THREAD_STATE___R0
/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H
......@@ -154,5 +172,5 @@
/* POSIX version of C Source */
#undef _POSIX_C_SOURCE
/* Use reentrant code */
/* Required define if using POSIX threads */
#undef _REENTRANT
gcc/ChangeLog
2006-06-02 Geoffrey Keating <geoffk@apple.com>
* config/rs6000/host-darwin.c (sigaltstack): Protect prototype with
HAVE_DECL_SIGALTSTACK.
(MC_FLD): New.
(segv_handler): Use MC_FLD.
* configure.ac: Check for a sigaltstack declaration.
Compute HAS_MCONTEXT_T_UNDERSCORES on Darwin.
* configure: Regenerate.
* config.in: Regenerate.
2006-06-03 J"orn Rennecke <joern.rennecke@st.com>
PR other/27850
......
gcc/config.in
......@@ -148,6 +148,12 @@
#endif
/* mcontext_t fields start with __ */
#ifndef USED_FOR_TARGET
#undef HAS_MCONTEXT_T_UNDERSCORES
#endif
/* Define to 1 if you have the `alphasort' function. */
#ifndef USED_FOR_TARGET
#undef HAVE_ALPHASORT
......@@ -568,6 +574,13 @@
#endif
/* Define to 1 if we found a declaration for 'sigaltstack', otherwise define
to 0. */
#ifndef USED_FOR_TARGET
#undef HAVE_DECL_SIGALTSTACK
#endif
/* Define to 1 if we found a declaration for 'snprintf', otherwise define to
0. */
#ifndef USED_FOR_TARGET
......
gcc/config/rs6000/host-darwin.c
......@@ -33,9 +33,19 @@ static void segv_crash_handler (int);
static void segv_handler (int, siginfo_t *, void *);
static void darwin_rs6000_extra_signals (void);
#ifndef HAVE_DECL_SIGALTSTACK
/* This doesn't have a prototype in signal.h in 10.2.x and earlier,
fixed in later releases. */
extern int sigaltstack(const struct sigaltstack *, struct sigaltstack *);
#endif
/* The fields of the mcontext_t type have acquired underscores in later
OS versions. */
#ifdef HAS_MCONTEXT_T_UNDERSCORES
#define MC_FLD(x) __ ## x
#else
#define MC_FLD(x) x
#endif
#undef HOST_HOOKS_EXTRA_SIGNALS
#define HOST_HOOKS_EXTRA_SIGNALS darwin_rs6000_extra_signals
......@@ -68,7 +78,7 @@ segv_handler (int sig ATTRIBUTE_UNUSED,
sigaddset (&sigset, SIGSEGV);
sigprocmask (SIG_UNBLOCK, &sigset, NULL);
faulting_insn = *(unsigned *)uc->uc_mcontext->ss.srr0;
faulting_insn = *(unsigned *)uc->uc_mcontext->MC_FLD(ss).MC_FLD(srr0);
/* Note that this only has to work for GCC, so we don't have to deal
with all the possible cases (GCC has no AltiVec code, for
......@@ -117,7 +127,8 @@ segv_handler (int sig ATTRIBUTE_UNUSED,
}
fprintf (stderr, "[address=%08lx pc=%08x]\n",
uc->uc_mcontext->es.dar, uc->uc_mcontext->ss.srr0);
uc->uc_mcontext->MC_FLD(es).MC_FLD(dar),
uc->uc_mcontext->MC_FLD(ss).MC_FLD(srr0));
internal_error ("Segmentation Fault");
exit (FATAL_EXIT_CODE);
}
......
gcc/configure
......@@ -11756,6 +11756,88 @@ fi
done
for ac_func in sigaltstack
do
ac_tr_decl=`echo "HAVE_DECL_$ac_func" | $as_tr_cpp`
echo "$as_me:$LINENO: checking whether $ac_func is declared" >&5
echo $ECHO_N "checking whether $ac_func is declared... $ECHO_C" >&6
if eval "test \"\${gcc_cv_have_decl_$ac_func+set}\" = set"; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
#undef $ac_tr_decl
#define $ac_tr_decl 1
#include "ansidecl.h"
#include "system.h"
#include <signal.h>
int
main ()
{
#ifndef $ac_func
char *(*pfn) = (char *(*)) $ac_func ;
#endif
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
(eval $ac_compile) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_c_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest.$ac_objext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
eval "gcc_cv_have_decl_$ac_func=yes"
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
eval "gcc_cv_have_decl_$ac_func=no"
fi
rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
fi
if eval "test \"`echo '$gcc_cv_have_decl_'$ac_func`\" = yes"; then
echo "$as_me:$LINENO: result: yes" >&5
echo "${ECHO_T}yes" >&6 ; cat >>confdefs.h <<_ACEOF
#define $ac_tr_decl 1
_ACEOF
else
echo "$as_me:$LINENO: result: no" >&5
echo "${ECHO_T}no" >&6 ; cat >>confdefs.h <<_ACEOF
#define $ac_tr_decl 0
_ACEOF
fi
done
# More time-related stuff.
echo "$as_me:$LINENO: checking for struct tms" >&5
echo $ECHO_N "checking for struct tms... $ECHO_C" >&6
......@@ -12195,6 +12277,62 @@ if test "$host_xm_file" != "$build_xm_file"; then
fi
fi
case ${host} in
powerpc-*-darwin*)
echo "$as_me:$LINENO: checking whether mcontext_t fields have underscores" >&5
echo $ECHO_N "checking whether mcontext_t fields have underscores... $ECHO_C" >&6
if test "${gcc_cv_mcontext_underscores+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
cat >conftest.$ac_ext <<_ACEOF
#include <ucontext.h>
int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
(eval $ac_compile) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_c_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest.$ac_objext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
gcc_cv_mcontext_underscores=no
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
gcc_cv_mcontext_underscores=yes
fi
rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
fi
echo "$as_me:$LINENO: result: $gcc_cv_mcontext_underscores" >&5
echo "${ECHO_T}$gcc_cv_mcontext_underscores" >&6
if test $gcc_cv_mcontext_underscores = yes; then
cat >>confdefs.h <<\_ACEOF
#define HAS_MCONTEXT_T_UNDERSCORES
_ACEOF
fi
;;
esac
# ---------
# Threading
# ---------
......
gcc/configure.ac
......@@ -1154,6 +1154,12 @@ gcc_AC_CHECK_DECLS(times, , ,[
#endif
])
gcc_AC_CHECK_DECLS(sigaltstack, , ,[
#include "ansidecl.h"
#include "system.h"
#include <signal.h>
])
# More time-related stuff.
AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
......@@ -1337,6 +1343,22 @@ if test "$host_xm_file" != "$build_xm_file"; then
fi
fi
case ${host} in
powerpc-*-darwin*)
AC_CACHE_CHECK([whether mcontext_t fields have underscores],
gcc_cv_mcontext_underscores,
AC_COMPILE_IFELSE([
#include <ucontext.h>
int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
],
gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
if test $gcc_cv_mcontext_underscores = yes; then
AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
[mcontext_t fields start with __])
fi
;;
esac
# ---------
# Threading
# ---------
......
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