mirror of
git://sourceware.org/git/glibc.git
synced 2025-01-12 12:07:12 +08:00
136 lines
3.1 KiB
C
136 lines
3.1 KiB
C
/* Copyright (C) 1992, 1995, 1996, 2000, 2003 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 <sysdeps/unix/sysdep.h>
|
|
|
|
#ifdef __ASSEMBLER__
|
|
|
|
#ifdef __linux__
|
|
# include <alpha/regdef.h>
|
|
#else
|
|
# include <regdef.h>
|
|
#endif
|
|
|
|
#include <tls.h> /* Defines USE___THREAD. */
|
|
|
|
#ifdef IS_IN_rtld
|
|
# include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */
|
|
#endif
|
|
|
|
|
|
#ifdef __STDC__
|
|
#define __LABEL(x) x##:
|
|
#else
|
|
#define __LABEL(x) x/**/:
|
|
#endif
|
|
|
|
#define LEAF(name, framesize) \
|
|
.globl name; \
|
|
.align 3; \
|
|
.ent name, 0; \
|
|
__LABEL(name) \
|
|
.frame sp, framesize, ra
|
|
|
|
#define ENTRY(name) \
|
|
.globl name; \
|
|
.align 3; \
|
|
.ent name, 0; \
|
|
__LABEL(name) \
|
|
.frame sp, 0, ra
|
|
|
|
/* Mark the end of function SYM. */
|
|
#undef END
|
|
#define END(sym) .end sym
|
|
|
|
/* Note that PSEUDO/PSEUDO_END use label number 1996---do not use a
|
|
label of that number between those two macros! */
|
|
|
|
#ifdef PROF
|
|
# define PSEUDO_PROLOGUE \
|
|
.frame sp, 0, ra; \
|
|
ldgp gp,0(pv); \
|
|
.set noat; \
|
|
lda AT,_mcount; \
|
|
jsr AT,(AT),_mcount; \
|
|
.set at; \
|
|
.prologue 1
|
|
# define PSEUDO_LOADGP
|
|
#else
|
|
# define PSEUDO_PROLOGUE \
|
|
.frame sp, 0, ra; \
|
|
.prologue 0
|
|
# define PSEUDO_LOADGP \
|
|
br gp, 2f; \
|
|
2: ldgp gp, 0(gp)
|
|
#endif /* PROF */
|
|
|
|
#if RTLD_PRIVATE_ERRNO
|
|
# define SYSCALL_ERROR_HANDLER \
|
|
stl v0, errno(gp) !gprel; \
|
|
lda v0, -1; \
|
|
ret
|
|
#else
|
|
# define SYSCALL_ERROR_HANDLER \
|
|
jmp $31, __syscall_error
|
|
#endif /* RTLD_PRIVATE_ERRNO */
|
|
|
|
#if defined(PIC) && !RTLD_PRIVATE_ERRNO
|
|
# define PSEUDO(name, syscall_name, args) \
|
|
.globl name; \
|
|
.align 4; \
|
|
.ent name,0; \
|
|
__LABEL(name) \
|
|
PSEUDO_PROLOGUE; \
|
|
PSEUDO_PREPARE_ARGS \
|
|
lda v0, SYS_ify(syscall_name); \
|
|
call_pal PAL_callsys; \
|
|
bne a3, __syscall_error !samegp; \
|
|
3:
|
|
# undef PSEUDO_END
|
|
# define PSEUDO_END(sym) END(sym)
|
|
#else
|
|
# define PSEUDO(name, syscall_name, args) \
|
|
.globl name; \
|
|
.align 4; \
|
|
.ent name,0; \
|
|
__LABEL(name) \
|
|
PSEUDO_PREPARE_ARGS \
|
|
lda v0, SYS_ify(syscall_name); \
|
|
call_pal PAL_callsys; \
|
|
bne a3, 1996f; \
|
|
3:
|
|
|
|
# undef PSEUDO_END
|
|
# define PSEUDO_END(sym) \
|
|
1996: \
|
|
PSEUDO_LOADGP; \
|
|
SYSCALL_ERROR_HANDLER; \
|
|
END(sym)
|
|
#endif /* PIC && !RTLD_PRIVATE_ERRNO */
|
|
|
|
#undef PSEUDO_PREPARE_ARGS
|
|
#define PSEUDO_PREPARE_ARGS /* Nothing. */
|
|
|
|
#define r0 v0
|
|
#define r1 a4
|
|
|
|
#define MOVE(x,y) mov x,y
|
|
|
|
#endif /* ASSEMBLER */
|