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Remove pre-2.2 Linux kernel support.

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This commit is contained in:
Joseph Myers
2012-05-14 14:11:02 +00:00
parent 1bfb72913b
commit ffb7875d03
40 changed files with 333 additions and 1447 deletions
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106
sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c
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@ -27,106 +27,40 @@
static void __rt_sigreturn_stub (void);
static void __sigreturn_stub (void);
/* The variable is shared between all wrappers around signal handling
functions which have RT equivalents. */
int __libc_missing_rt_sigs;
int
__libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
{
struct old_kernel_sigaction k_sigact, k_osigact;
int ret;
#ifdef __NR_rt_sigaction
/* First try the RT signals. */
if (!__libc_missing_rt_sigs)
{
struct kernel_sigaction kact, koact;
unsigned long stub = 0;
int saved_errno = errno;
if (act)
{
kact.k_sa_handler = act->sa_handler;
memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t));
if (((kact.sa_flags = act->sa_flags) & SA_SIGINFO) != 0)
stub = (unsigned long) &__rt_sigreturn_stub;
else
stub = (unsigned long) &__sigreturn_stub;
stub -= 8;
kact.sa_restorer = NULL;
}
/* XXX The size argument hopefully will have to be changed to the
real size of the user-level sigset_t. */
ret = INLINE_SYSCALL (rt_sigaction, 5, sig, act ? &kact : 0,
oact ? &koact : 0, stub, _NSIG / 8);
if (ret >= 0 || errno != ENOSYS)
{
if (oact && ret >= 0)
{
oact->sa_handler = koact.k_sa_handler;
memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (sigset_t));
oact->sa_flags = koact.sa_flags;
oact->sa_restorer = koact.sa_restorer;
}
return ret;
}
__set_errno (saved_errno);
__libc_missing_rt_sigs = 1;
}
#endif
/* Magic to tell the kernel we are using "new-style" signals, in that
the signal table is not kept in userspace. Not the same as the
really-new-style rt signals. */
sig = -sig;
struct kernel_sigaction kact, koact;
unsigned long stub = 0;
if (act)
{
k_sigact.k_sa_handler = act->sa_handler;
k_sigact.sa_mask = act->sa_mask.__val[0];
k_sigact.sa_flags = act->sa_flags;
k_sigact.sa_restorer = NULL;
kact.k_sa_handler = act->sa_handler;
memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t));
if (((kact.sa_flags = act->sa_flags) & SA_SIGINFO) != 0)
stub = (unsigned long) &__rt_sigreturn_stub;
else
stub = (unsigned long) &__sigreturn_stub;
stub -= 8;
kact.sa_restorer = NULL;
}
{
register int r_syscallnr __asm__("%g1") = __NR_sigaction;
register int r_sig __asm__("%o0") = sig;
register struct old_kernel_sigaction *r_act __asm__("%o1");
register struct old_kernel_sigaction *r_oact __asm__("%o2");
/* XXX The size argument hopefully will have to be changed to the
real size of the user-level sigset_t. */
ret = INLINE_SYSCALL (rt_sigaction, 5, sig, act ? &kact : 0,
oact ? &koact : 0, stub, _NSIG / 8);
r_act = act ? &k_sigact : NULL;
r_oact = oact ? &k_osigact : NULL;
__asm__ __volatile__("t 0x10\n\t"
"bcc 1f\n\t"
" nop\n\t"
"sub %%g0,%%o0,%%o0\n"
"1:"
: "=r"(r_sig)
: "r"(r_syscallnr), "r"(r_act), "r"(r_oact),
"0"(r_sig));
ret = r_sig;
}
if (ret >= 0)
if (oact && ret >= 0)
{
if (oact)
{
oact->sa_handler = k_osigact.k_sa_handler;
oact->sa_mask.__val[0] = k_osigact.sa_mask;
oact->sa_flags = k_osigact.sa_flags;
oact->sa_restorer = NULL;
}
return ret;
oact->sa_handler = koact.k_sa_handler;
memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (sigset_t));
oact->sa_flags = koact.sa_flags;
oact->sa_restorer = koact.sa_restorer;
}
__set_errno (-ret);
return -1;
return ret;
}
libc_hidden_def (__libc_sigaction)