OpenE2K
/
glibc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

alpha: Use .cfi_signal_frame in rt_sigaction

This commit is contained in:
Richard Henderson 2012-06-05 08:12:03 -07:00
parent 0ff73bfcb0
commit 7d1feb5693
2 changed files with 13 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
ChangeLog.alpha
View File

@ -1,5 +1,8 @@
2012-06-05 Richard Henderson <rth@twiddle.net>
* sysdeps/unix/sysv/linux/alpha/rt_sigaction.S: Use .cfi_signal_frame
instead of a hack using extra nops.
* sysdeps/unxi/alpha/getppid.S: New file.
* sysdeps/unxi/alpha/getegid.S: New file.
* sysdeps/unxi/alpha/geteuid.S: New file.

29
sysdeps/unix/sysv/linux/alpha/rt_sigaction.S
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1998, 2003, 2004 Free Software Foundation, Inc.
/* Copyright (C) 1998-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson <rth@cygnus.com>, 1998
@ -28,7 +28,7 @@
.text
ENTRY(__syscall_rt_sigaction)
.frame sp,0,ra,0
cfi_startproc
ldgp gp,0(pv)
#ifdef PROF
.set noat
@ -39,18 +39,12 @@ ENTRY(__syscall_rt_sigaction)
.prologue 1
beq a1, 0f
ldl t0, 8(a1) # sa_flags
ldl t0, 8(a1) # sa_flags
/* The unwinder will subtract one from the return address when
attempting to find the call instruction that led us here.
Since we didn't get here via a normal call, if we do nothing
we would pick up the wrong symbol and the wrong FDE. Account
for this by adding a nop to the start of the function and
then skipping it here by adding 4. */
ldah a4, __syscall_sigreturn+4(gp) !gprelhigh
ldah t1, __syscall_rt_sigreturn+4(gp) !gprelhigh
lda a4, __syscall_sigreturn+4(a4) !gprellow
lda t1, __syscall_rt_sigreturn+4(t1) !gprellow
ldah a4, __syscall_sigreturn(gp) !gprelhigh
ldah t1, __syscall_rt_sigreturn(gp) !gprelhigh
lda a4, __syscall_sigreturn(a4) !gprellow
lda t1, __syscall_rt_sigreturn(t1) !gprellow
and t0, 0x40, t0 # SA_SIGINFO
cmovne t0, t1, a4
@ -58,7 +52,7 @@ ENTRY(__syscall_rt_sigaction)
callsys
bne a3, SYSCALL_ERROR_LABEL
ret
cfi_endproc
PSEUDO_END(__syscall_rt_sigaction)
/* To enable unwinding through the signal frame without special hackery
@ -90,26 +84,23 @@ PSEUDO_END(__syscall_rt_sigaction)
.endm
.align 4
nop
nop
nop
cfi_startproc
cfi_return_column (64)
.cfi_signal_frame
SIGCONTEXT_REGS -648
cfi_def_cfa_offset (648)
__syscall_sigreturn:
nop
mov sp, a0
ldi v0, __NR_sigreturn
callsys
.size __syscall_sigreturn, .-__syscall_sigreturn
.type __syscall_sigreturn, @function
.align 4
cfi_def_cfa_offset (176 + 648)
__syscall_rt_sigreturn:
nop
mov sp,a0
ldi v0,__NR_rt_sigreturn
callsys