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* sysdeps/unix/sysv/linux/mips/kernel_sigaction.h (_KERNEL_NSIG_BPW): Define in terms of _MIPS_SZLONG. * sysdeps/unix/sysv/linux/mips/sigaction.c: Define restore and restore_rt functions. Use them.

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* sysdeps/unix/sysv/linux/mips/kernel_sigaction.h
	(_KERNEL_NSIG_BPW): Define in terms of _MIPS_SZLONG.
	* sysdeps/unix/sysv/linux/mips/sigaction.c: Define restore and
	restore_rt functions.  Use them.
This commit is contained in:
Alexandre Oliva
2003-03-14 07:49:05 +00:00
parent 44bc0afbe4
commit 84c63a7648
3 changed files with 51 additions and 1 deletions
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5
ChangeLog
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@@ -1,5 +1,10 @@
2003-03-14 Alexandre Oliva <aoliva@redhat.com> 2003-03-14 Alexandre Oliva <aoliva@redhat.com>
* sysdeps/unix/sysv/linux/mips/kernel_sigaction.h
(_KERNEL_NSIG_BPW): Define in terms of _MIPS_SZLONG.
* sysdeps/unix/sysv/linux/mips/sigaction.c: Define restore and
restore_rt functions. Use them.
* sysdeps/unix/sysv/linux/mips/sys/tas.h (_test_and_set): Don't * sysdeps/unix/sysv/linux/mips/sys/tas.h (_test_and_set): Don't
.set mips2 on new abis. .set mips2 on new abis.

2
sysdeps/unix/sysv/linux/mips/kernel_sigaction.h
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@@ -23,7 +23,7 @@ struct old_kernel_sigaction {
#define _KERNEL_NSIG 128 #define _KERNEL_NSIG 128
#define _KERNEL_NSIG_BPW 32 #define _KERNEL_NSIG_BPW _MIPS_SZLONG
#define _KERNEL_NSIG_WORDS (_KERNEL_NSIG / _KERNEL_NSIG_BPW) #define _KERNEL_NSIG_WORDS (_KERNEL_NSIG / _KERNEL_NSIG_BPW)
typedef struct { typedef struct {

45
sysdeps/unix/sysv/linux/mips/sigaction.c
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@@ -41,6 +41,15 @@ extern int __syscall_sigaction (int, const struct old_kernel_sigaction *__unboun
extern int __syscall_rt_sigaction (int, const struct kernel_sigaction *__unbounded, extern int __syscall_rt_sigaction (int, const struct kernel_sigaction *__unbounded,
struct kernel_sigaction *__unbounded, size_t); struct kernel_sigaction *__unbounded, size_t);
#if _MIPS_SIM != _MIPS_SIM_ABI32
# ifdef __NR_rt_sigreturn
static void restore_rt (void) asm ("__restore_rt");
# endif
# ifdef __NR_sigreturn
static void restore (void) asm ("__restore");
# endif
#endif
/* If ACT is not NULL, change the action for SIG to *ACT. /* If ACT is not NULL, change the action for SIG to *ACT.
If OACT is not NULL, put the old action for SIG in *OACT. */ If OACT is not NULL, put the old action for SIG in *OACT. */
@@ -74,7 +83,11 @@ __libc_sigaction (sig, act, oact)
memcpy (&kact.sa_mask, &act->sa_mask, sizeof (kernel_sigset_t)); memcpy (&kact.sa_mask, &act->sa_mask, sizeof (kernel_sigset_t));
kact.sa_flags = act->sa_flags; kact.sa_flags = act->sa_flags;
# ifdef HAVE_SA_RESTORER # ifdef HAVE_SA_RESTORER
# if _MIPS_SIM == _MIPS_SIM_ABI32
kact.sa_restorer = act->sa_restorer; kact.sa_restorer = act->sa_restorer;
# else
kact.sa_restorer = &restore_rt;
# endif
# endif # endif
} }
@@ -128,7 +141,11 @@ __libc_sigaction (sig, act, oact)
oact->sa_mask.__val[0] = k_osigact.sa_mask; oact->sa_mask.__val[0] = k_osigact.sa_mask;
oact->sa_flags = k_osigact.sa_flags; oact->sa_flags = k_osigact.sa_flags;
# ifdef HAVE_SA_RESTORER # ifdef HAVE_SA_RESTORER
# if _MIPS_SIM == _MIPS_SIM_ABI32
oact->sa_restorer = k_osigact.sa_restorer; oact->sa_restorer = k_osigact.sa_restorer;
# else
oact->sa_restorer = &restore;
# endif
# endif # endif
} }
return result; return result;
@@ -141,3 +158,31 @@ weak_alias (__libc_sigaction, __sigaction)
libc_hidden_weak (__sigaction) libc_hidden_weak (__sigaction)
weak_alias (__libc_sigaction, sigaction) weak_alias (__libc_sigaction, sigaction)
#endif #endif
/* NOTE: Please think twice before making any changes to the bits of
code below. GDB needs some intimate knowledge about it to
recognize them as signal trampolines, and make backtraces through
signal handlers work right. Important are both the names
(__restore_rt) and the exact instruction sequence.
If you ever feel the need to make any changes, please notify the
appropriate GDB maintainer. */
#define RESTORE(name, syscall) RESTORE2 (name, syscall)
#define RESTORE2(name, syscall) \
asm \
( \
".align 4\n" \
"__" #name ":\n" \
" li $2, " #syscall "\n" \
" syscall\n" \
);
/* The return code for realtime-signals. */
#if _MIPS_SIM != _MIPS_SIM_ABI32
# ifdef __NR_rt_sigreturn
RESTORE (restore_rt, __NR_rt_sigreturn)
# endif
# ifdef __NR_sigreturn
RESTORE (restore, __NR_sigreturn)
# endif
#endif