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/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Guido Guenther <agx@sigxcpu.org>, 2003.
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>
#ifndef __ASSEMBLER__
# include <linuxthreads/internals.h>
#endif
#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
#ifdef __PIC__
# undef PSEUDO
# define PSEUDO(name, syscall_name, args) \
.align 2; \
99: la t9,__syscall_error; \
jr t9; \
ENTRY (name) \
.set noreorder; \
.cpload t9; \
.set reorder; \
SINGLE_THREAD_P(t0); \
bne zero, t0, L(pseudo_cancel); \
.set noreorder; \
li v0, SYS_ify(syscall_name); \
syscall; \
.set reorder; \
bne a3, zero, SYSCALL_ERROR_LABEL; \
ret; \
L(pseudo_cancel): \
SAVESTK_##args; \
sw ra, 28(sp); \
sw gp, 32(sp); \
PUSHARGS_##args; /* save syscall args */ \
CENABLE; \
lw gp, 32(sp); \
sw v0, 44(sp); /* save mask */ \
POPARGS_##args; /* restore syscall args */ \
.set noreorder; \
li v0, SYS_ify (syscall_name); \
syscall; \
.set reorder; \
sw v0, 36(sp); /* save syscall result */ \
sw a3, 40(sp); /* save syscall error flag */ \
lw a0, 44(sp); /* pass mask as arg1 */ \
CDISABLE; \
lw gp, 32(sp); \
lw v0, 36(sp); /* restore syscall result */ \
lw a3, 40(sp); /* restore syscall error flag */ \
lw ra, 28(sp); /* restore return address */ \
RESTORESTK; \
bne a3, zero, SYSCALL_ERROR_LABEL; \
L(pseudo_end):
#endif
# define PUSHARGS_0 /* nothing to do */
# define PUSHARGS_1 PUSHARGS_0 sw a0, 0(sp);
# define PUSHARGS_2 PUSHARGS_1 sw a1, 4(sp);
# define PUSHARGS_3 PUSHARGS_2 sw a2, 8(sp);
# define PUSHARGS_4 PUSHARGS_3 sw a3, 12(sp);
# define PUSHARGS_5 PUSHARGS_4 /* handeld by SAVESTK_## */
# define PUSHARGS_6 PUSHARGS_5
# define PUSHARGS_7 PUSHARGS_6
# define POPARGS_0 /* nothing to do */
# define POPARGS_1 POPARGS_0 lw a0, 0(sp);
# define POPARGS_2 POPARGS_1 lw a1, 4(sp);
# define POPARGS_3 POPARGS_2 lw a2, 8(sp);
# define POPARGS_4 POPARGS_3 lw a3, 12(sp);
# define POPARGS_5 POPARGS_4 /* args already in new stackframe */
# define POPARGS_6 POPARGS_5
# define POPARGS_7 POPARGS_6
# define STKSPACE 48
# define SAVESTK_0 subu sp, STKSPACE
# define SAVESTK_1 SAVESTK_0
# define SAVESTK_2 SAVESTK_1
# define SAVESTK_3 SAVESTK_2
# define SAVESTK_4 SAVESTK_3
# define SAVESTK_5 lw t0, 16(sp); \
subu sp, STKSPACE; \
sw t0, 16(sp)
# define SAVESTK_6 lw t0, 16(sp); \
lw t1, 20(sp); \
subu sp, STKSPACE; \
sw t0, 16(sp); \
sw t1, 20(sp)
# define SAVESTK_7 lw t0, 16(sp); \
lw t1, 20(sp); \
lw t2, 24(sp); \
subu sp, STKSPACE; \
sw t0, 16(sp); \
sw t1, 20(sp); \
sw t2, 24(sp)
# define RESTORESTK addu sp, STKSPACE
# ifdef IS_IN_libpthread
# define CENABLE la t9, __pthread_enable_asynccancel; jalr t9;
# define CDISABLE la t9, __pthread_disable_asynccancel; jalr t9;
# define __local_multiple_threads __pthread_multiple_threads
# elif defined IS_IN_librt
# define CENABLE la t9, __librt_enable_asynccancel; jalr t9;
# define CDISABLE la t9, __librt_disable_asynccancel; jalr t9;
# define __local_multiple_threads __librt_multiple_threads
# else
# define CENABLE la t9, __libc_enable_asynccancel; jalr t9;
# define CDISABLE la t9, __libc_disable_asynccancel; jalr t9;
# define __local_multiple_threads __libc_multiple_threads
# endif
# ifndef __ASSEMBLER__
extern int __local_multiple_threads attribute_hidden;
# define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1)
# else
# define SINGLE_THREAD_P(reg) lw reg, __local_multiple_threads
#endif
#elif !defined __ASSEMBLER__
/* This code should never be used but we define it anyhow. */
# define SINGLE_THREAD_P (1)
#endif
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