/* Darwin/powerpc host-specific hook definitions.
- Copyright (C) 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003-2020 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 2, or (at your
+ 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
License for more details.
You should have received a copy of the GNU General Public License
- along with GCC; see the file COPYING. If not, write to the
- Free Software Foundation, 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA. */
+ along with GCC; see the file COPYING3. If not see
+ <http://www.gnu.org/licenses/>. */
+
+#define IN_TARGET_CODE 1
#include "config.h"
#include "system.h"
#include "coretypes.h"
-#include <signal.h>
+#include "diagnostic.h"
#include <sys/ucontext.h>
#include "hosthooks.h"
#include "hosthooks-def.h"
-#include "toplev.h"
-#include "diagnostic.h"
-
-static void segv_crash_handler PARAMS ((int));
-static void segv_handler PARAMS ((int, siginfo_t *, void *));
-static void darwin_rs6000_extra_signals PARAMS ((void));
-
-/* No prototype for this, filed as Radar 3150910. */
-extern int sigaltstack(const stack_t *, stack_t *);
+#include "config/host-darwin.h"
+
+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
the previous bottom of the stack. */
static void
-segv_crash_handler (sig)
- int sig ATTRIBUTE_UNUSED;
+segv_crash_handler (int sig ATTRIBUTE_UNUSED)
{
internal_error ("Segmentation Fault (code)");
}
static void
-segv_handler (sig, sip, scp)
- int sig ATTRIBUTE_UNUSED;
- siginfo_t *sip ATTRIBUTE_UNUSED;
- void *scp;
+segv_handler (int sig ATTRIBUTE_UNUSED,
+ siginfo_t *sip ATTRIBUTE_UNUSED,
+ void *scp)
{
ucontext_t *uc = (ucontext_t *)scp;
+ sigset_t sigset;
unsigned faulting_insn;
/* The fault might have happened when trying to run some instruction, in
which case the next line will segfault _again_. Handle this case. */
signal (SIGSEGV, segv_crash_handler);
+ sigemptyset (&sigset);
+ 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
this. */
if ((faulting_insn & 0xFFFF8000) == 0x94218000 /* stwu %r1, -xxx(%r1) */
- || (faulting_insn & 0xFFFF03FF) == 0x7C21016E /* stwux %r1, xxx, %r1 */
+ || (faulting_insn & 0xFC1F03FF) == 0x7C01016E /* stwux xxx, %r1, xxx */
|| (faulting_insn & 0xFC1F8000) == 0x90018000 /* stw xxx, -yyy(%r1) */
|| (faulting_insn & 0xFC1F8000) == 0xD8018000 /* stfd xxx, -yyy(%r1) */
|| (faulting_insn & 0xFC1F8000) == 0xBC018000 /* stmw xxx, -yyy(%r1) */)
if (strcmp (shell_commands[i][0], shell_name + 1) == 0)
{
fnotice (stderr,
- "Try running `%s' in the shell to raise its limit.\n",
+ "Try running '%s' in the shell to raise its limit.\n",
shell_commands[i][1]);
}
}
if (global_dc->abort_on_error)
- abort ();
+ fancy_abort (__FILE__, __LINE__, __FUNCTION__);
exit (FATAL_EXIT_CODE);
}
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);
}
static void
-darwin_rs6000_extra_signals ()
+darwin_rs6000_extra_signals (void)
{
struct sigaction sact;
stack_t sigstk;
- sigstk.ss_sp = xmalloc (SIGSTKSZ);
+ sigstk.ss_sp = (char*)xmalloc (SIGSTKSZ);
sigstk.ss_size = SIGSTKSZ;
sigstk.ss_flags = 0;
if (sigaltstack (&sigstk, NULL) < 0)
- fatal_error ("While setting up signal stack: %m");
+ fatal_error (input_location, "While setting up signal stack: %m");
sigemptyset(&sact.sa_mask);
sact.sa_flags = SA_ONSTACK | SA_SIGINFO;
sact.sa_sigaction = segv_handler;
if (sigaction (SIGSEGV, &sact, 0) < 0)
- fatal_error ("While setting up signal handler: %m");
+ fatal_error (input_location, "While setting up signal handler: %m");
}
+\f
const struct host_hooks host_hooks = HOST_HOOKS_INITIALIZER;
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