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linux64.h (MD_FALLBACK_FRAME_STATE_FOR): Don't bump retaddr here.

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* config/rs6000/linux64.h (MD_FALLBACK_FRAME_STATE_FOR): Don't
	bump retaddr here.

	* include/powerpc-signal.h: Revert 2004-01-21 change.
	(INIT_SEGV, INIT_FPE): Provide powerpc64 versions.  Check return
	from syscall for ppc32 versions.

From-SVN: r77601
This commit is contained in:
Alan Modra 2004-02-10 13:27:43 +00:00 • committed by Alan Modra
parent 6ab36f9182
commit d1d5c836a1
4 changed files with 56 additions and 26 deletions
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63
libjava/include/powerpc-signal.h
View file

@ -11,17 +11,15 @@ details. */
#ifndef JAVA_SIGNAL_H
# define JAVA_SIGNAL_H 1
#define JAVA_SIGNAL_H 1
# ifndef __powerpc64__
#include <signal.h>
#include <sys/syscall.h>
# include <signal.h>
# include <sys/syscall.h>
#define HANDLE_SEGV 1
#undef HANDLE_FPE
# define HANDLE_SEGV 1
# undef HANDLE_FPE
# define SIGNAL_HANDLER(_name) \
#define SIGNAL_HANDLER(_name) \
static void _name (int /* _signal */, struct sigcontext *_sc)
/* PPC either leaves PC pointing at a faulting instruction or the
@ -29,7 +27,7 @@ details. */
the former, so we adjust the saved PC to point to the following
instruction. This is what the handler in libgcc expects. */
# define MAKE_THROW_FRAME(_exception) \
#define MAKE_THROW_FRAME(_exception) \
do \
{ \
_sc->regs->nip += 4; \
@ -53,6 +51,7 @@ while (0)
compatibility hacks in MAKE_THROW_FRAME, as the ucontext layout
on PPC changed during the 2.5 kernel series. */
#ifndef __powerpc64__
struct kernel_old_sigaction {
void (*k_sa_handler) (int, struct sigcontext *);
unsigned long k_sa_mask;
@ -60,35 +59,61 @@ struct kernel_old_sigaction {
void (*k_sa_restorer) (void);
};
# define INIT_SEGV \
#define INIT_SEGV \
do \
{ \
struct kernel_old_sigaction kact; \
kact.k_sa_handler = catch_segv; \
kact.k_sa_mask = 0; \
kact.k_sa_flags = 0; \
syscall (SYS_sigaction, SIGSEGV, &kact, NULL); \
if (syscall (SYS_sigaction, SIGSEGV, &kact, NULL) != 0) \
__asm__ __volatile__ (".long 0"); \
} \
while (0)
# define INIT_FPE \
#define INIT_FPE \
do \
{ \
struct kernel_old_sigaction kact; \
kact.k_sa_handler = catch_fpe; \
kact.k_sa_mask = 0; \
kact.k_sa_flags = 0; \
syscall (SYS_sigaction, SIGFPE, &kact, NULL); \
if (syscall (SYS_sigaction, SIGFPE, &kact, NULL) != 0) \
__asm__ __volatile__ (".long 0"); \
} \
while (0)
# else
#else /* powerpc64 */
# undef HANDLE_SEGV
# undef HANDLE_FPE
struct kernel_sigaction
{
void (*k_sa_handler) (int, struct sigcontext *);
unsigned long k_sa_flags;
void (*k_sa_restorer)(void);
unsigned long k_sa_mask;
};
# define INIT_SEGV do {} while (0)
# define INIT_FPE do {} while (0)
# endif
#define INIT_SEGV \
do \
{ \
struct kernel_sigaction kact; \
memset (&kact, 0, sizeof (kact)); \
kact.k_sa_handler = catch_segv; \
if (syscall (SYS_rt_sigaction, SIGSEGV, &kact, NULL, 8) != 0) \
__asm__ __volatile__ (".long 0"); \
} \
while (0)
#define INIT_FPE \
do \
{ \
struct kernel_sigaction kact; \
memset (&kact, 0, sizeof (kact)); \
kact.k_sa_handler = catch_fpe; \
if (syscall (SYS_rt_sigaction, SIGFPE, &kact, NULL, 8) != 0) \
__asm__ __volatile__ (".long 0"); \
} \
while (0)
#endif
#endif /* JAVA_SIGNAL_H */