mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-29 22:11:18 +00:00
346f18ae18
Update. 2004-06-28 Jakub Jelinek <jakub@redhat.com> * sysdeps/unix/alpha/sysdep.h (inline_syscall6): Fix a typo. [BZ #231] * sysdeps/unix/alpha/sysdep.S (__syscall_error): Avoid !samegp relocation in librt.so. [BZ #230] * sysdeps/alpha/dl-machine.h (_dl_start_user): Use ldah/ldl to load _dl_skip_args. Patch by Jakub Bogusz <qboosh@pld-linux.org>.
136 lines
3.2 KiB
ArmAsm
136 lines
3.2 KiB
ArmAsm
/* Copyright (C) 1993, 1996, 1998, 2002, 2003, 2004
|
|
Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Brendan Kehoe (brendan@zen.org).
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <sysdep.h>
|
|
#include <features.h>
|
|
|
|
#if defined(__ELF__) && defined(PIC)
|
|
/* Put this at the end of libc's text segment so that all of
|
|
the direct branches from the syscalls are forward, and
|
|
thus predicted not taken. */
|
|
.section .text.last, "ax", @progbits
|
|
#else
|
|
.text
|
|
#endif
|
|
|
|
#ifdef PIC
|
|
/* When building a shared library, we branch here without
|
|
having loaded the GP. Nor, since it was a direct branch,
|
|
have we loaded PV with our address. Do both. */
|
|
# define LOADGP br pv, 1f; 1: ldgp gp, 0(pv)
|
|
# define PROLOGUE .prologue 0
|
|
# define EPILOGUE
|
|
#else
|
|
/* When building the static library, we tail call here from
|
|
elsewhere, which might use a different GP. The entertaining
|
|
part is that we have to return with the GP of our caller
|
|
in place, so that linker relaxation works properly. */
|
|
/* ??? This is so ugly. Consider always putting the errno
|
|
setting code with the syscall in the static case. */
|
|
# define GPSAVEREG t10
|
|
# define LOADGP ldah t11, 0(pv) !gpdisp!1; \
|
|
br 1f; \
|
|
.subsection 2; \
|
|
1: mov gp, GPSAVEREG; \
|
|
lda gp, 0(t11) !gpdisp!1; \
|
|
br 2f; \
|
|
.previous; \
|
|
mov gp, GPSAVEREG; \
|
|
2:
|
|
# define PROLOGUE .prologue 1
|
|
# define EPILOGUE mov GPSAVEREG, gp
|
|
#endif
|
|
|
|
.align 4
|
|
.globl __syscall_error
|
|
.ent __syscall_error
|
|
__syscall_error:
|
|
|
|
#if defined(_LIBC_REENTRANT) && USE___THREAD
|
|
|
|
#ifndef NOT_IN_libc
|
|
# define SYSCALL_ERROR_ERRNO __libc_errno
|
|
#else
|
|
# define SYSCALL_ERROR_ERRNO errno
|
|
#endif
|
|
|
|
LOADGP
|
|
PROLOGUE
|
|
mov v0, t0
|
|
call_pal PAL_rduniq
|
|
ldq t1, SYSCALL_ERROR_ERRNO(gp) !gottprel
|
|
addq v0, t1, v0
|
|
stl t0, 0(v0)
|
|
lda v0, -1
|
|
EPILOGUE
|
|
ret
|
|
|
|
#elif defined(_LIBC_REENTRANT)
|
|
|
|
LOADGP
|
|
lda sp, -32(sp)
|
|
.frame sp, 32, ra, 0
|
|
stq ra, 0(sp)
|
|
stq v0, 8(sp)
|
|
#ifdef GPSAVEREG
|
|
stq GPSAVEREG, 16(sp)
|
|
#endif
|
|
.mask 0x4000001, -32
|
|
PROLOGUE
|
|
|
|
/* Find our per-thread errno address */
|
|
#if defined PIC && !defined IS_IN_librt
|
|
bsr ra, __errno_location !samegp
|
|
#else
|
|
jsr ra, __errno_location
|
|
#ifndef GPSAVEREG
|
|
ldgp gp, 0(ra)
|
|
#endif
|
|
#endif
|
|
|
|
/* Store the error value. */
|
|
ldq t0, 8(sp)
|
|
stl t0, 0(v0)
|
|
|
|
/* And kick back a -1. */
|
|
ldi v0, -1
|
|
|
|
#ifdef GPSAVEREG
|
|
ldq GPSAVEREG, 16(sp)
|
|
#endif
|
|
ldq ra, 0(sp)
|
|
lda sp, 32(sp)
|
|
EPILOGUE
|
|
ret
|
|
|
|
#else
|
|
|
|
LOADGP
|
|
PROLOGUE
|
|
stl v0, errno
|
|
lda v0, -1
|
|
EPILOGUE
|
|
ret
|
|
|
|
#endif
|
|
|
|
.subsection 3
|
|
.end __syscall_error
|