mirror of
https://sourceware.org/git/glibc.git
synced 2024-10-02 03:57:48 +00:00
0b833ff44b
1998-01-26 Richard Henderson <rth@cygnus.com> * sysdeps/alpha/dl-machine.h (TRAMPOLINE_TEMPLATE): Move declaration of the trampoline function into the macro. * sysdeps/unix/sysv/linux/alpha/clone.S: Fix ldgp for PROF. * sysdeps/unix/sysv/linux/alpha/syscalls.list: Revert last change; kernel 2.1.82 has this fixed. * sysdeps/unix/sysv/linux/alpha/rt_sigaction.S: New file. * sysdeps/unix/sysv/linux/alpha/sys/ucontext.h: New file.
76 lines
2.0 KiB
ArmAsm
76 lines
2.0 KiB
ArmAsm
/* Copyright (C) 1998 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Richard Henderson <rth@cygnus.com>, 1998
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <sysdep.h>
|
|
|
|
/* On Alpha we desparately want to avoid having to issue an imb. Ordinarily
|
|
the kernel would have to issue one after setting up the signal return
|
|
stack, but the Linux rt_sigaction syscall is prepared to accept a pointer
|
|
to the sigreturn syscall, instead of inlining it on the stack.
|
|
|
|
This just about halves signal delivery time. */
|
|
|
|
|
|
.text
|
|
ENTRY(__syscall_rt_sigaction)
|
|
.frame sp,0,ra,0
|
|
#ifdef PROF
|
|
ldgp gp,0(pv)
|
|
.set noat
|
|
lda AT, _mcount
|
|
jsr AT, (AT), _mcount
|
|
.set at
|
|
#endif
|
|
.prologue 1
|
|
|
|
beq a1, 0f
|
|
ldl t0, 8(a1)
|
|
lda a4, sigreturn-__syscall_rt_sigaction(pv)
|
|
lda t1, rt_sigreturn-__syscall_rt_sigaction(pv)
|
|
and t0, 0x00000040, t0 # SA_SIGINFO
|
|
cmovne t0, t1, a4
|
|
0: ldi v0,__NR_sigaction
|
|
callsys
|
|
bne a3,1f
|
|
ret
|
|
|
|
1: br gp,2f
|
|
2: ldgp gp,0(gp)
|
|
jmp __syscall_error
|
|
|
|
END(__syscall_rt_sigaction)
|
|
|
|
.align 5
|
|
.ent sigreturn
|
|
sigreturn:
|
|
.prologue 0
|
|
mov sp,a0
|
|
ldi v0,__NR_sigreturn
|
|
callsys
|
|
.end sigreturn
|
|
|
|
.align 4
|
|
.ent rt_sigreturn
|
|
rt_sigreturn:
|
|
.prologue 0
|
|
mov sp,a0
|
|
ldi v0,__NR_rt_sigreturn
|
|
callsys
|
|
.end rt_sigreturn
|