mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-12 22:30:12 +00:00
100 lines
3.1 KiB
C
100 lines
3.1 KiB
C
|
/* Copyright (C) 2003 Free Software Foundation, Inc.
|
||
|
|
This file is part of the GNU C Library.
|
||
|
|
Contributed by Jakub Jelinek <jakub@redhat.com>, 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>
|
||
|
|
#include <tls.h>
|
||
|
|
#ifndef __ASSEMBLER__
|
||
|
|
# include <nptl/pthreadP.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if !defined NOT_IN_libc || defined IS_IN_libpthread
|
||
|
|
|
||
|
|
# undef PSEUDO
|
||
|
|
# define PSEUDO(name, syscall_name, args) \
|
||
|
|
.text; \
|
||
|
|
L(pseudo_cancel): \
|
||
|
|
STM_##args \
|
||
|
|
stm %r12,%r15,48(%r15); \
|
||
|
|
lr %r14,%r15; \
|
||
|
|
ahi %r15,-96; \
|
||
|
|
st %r14,0(%r15); \
|
||
|
|
basr %r13,0; \
|
||
|
|
0: l %r1,1f-0b(%r13); \
|
||
|
|
bas %r14,0(%r1,%r13); \
|
||
|
|
lr %r0,%r2; \
|
||
|
|
LM_##args \
|
||
|
|
DO_CALL(syscall_name, args); \
|
||
|
|
l %r1,2f-0b(%r13); \
|
||
|
|
lr %r12,%r2; \
|
||
|
|
lr %r2,%r0; \
|
||
|
|
bas %r14,0(%r1,%r13); \
|
||
|
|
lr %r2,%r12; \
|
||
|
|
lm %r12,%r15,48+96(%r15); \
|
||
|
|
j L(pseudo_check); \
|
||
|
|
1: .long CENABLE-0b; \
|
||
|
|
2: .long CDISABLE-0b; \
|
||
|
|
ENTRY(name) \
|
||
|
|
SINGLE_THREAD_P(%r1) \
|
||
|
|
jne L(pseudo_cancel); \
|
||
|
|
DO_CALL(syscall_name, args); \
|
||
|
|
L(pseudo_check): \
|
||
|
|
lhi %r4,-4095; \
|
||
|
|
clr %r2,%r4; \
|
||
|
|
jnl SYSCALL_ERROR_LABEL; \
|
||
|
|
L(pseudo_end):
|
||
|
|
|
||
|
|
# ifdef IS_IN_libpthread
|
||
|
|
# define CENABLE __pthread_enable_asynccancel
|
||
|
|
# define CDISABLE __pthread_disable_asynccancel
|
||
|
|
# else
|
||
|
|
# define CENABLE __libc_enable_asynccancel
|
||
|
|
# define CDISABLE __libc_disable_asynccancel
|
||
|
|
# endif
|
||
|
|
|
||
|
|
#define STM_0 /* Nothing */
|
||
|
|
#define STM_1 st %r2,8(%r15);
|
||
|
|
#define STM_2 stm %r2,%r3,8(%r15);
|
||
|
|
#define STM_3 stm %r2,%r4,8(%r15);
|
||
|
|
#define STM_4 stm %r2,%r5,8(%r15);
|
||
|
|
#define STM_5 stm %r2,%r5,8(%r15);
|
||
|
|
|
||
|
|
#define LM_0 /* Nothing */
|
||
|
|
#define LM_1 l %r2,8+96(%r15);
|
||
|
|
#define LM_2 lm %r2,%r3,8+96(%r15);
|
||
|
|
#define LM_3 lm %r2,%r4,8+96(%r15);
|
||
|
|
#define LM_4 lm %r2,%r5,8+96(%r15);
|
||
|
|
#define LM_5 lm %r2,%r5,8+96(%r15);
|
||
|
|
|
||
|
|
# ifndef __ASSEMBLER__
|
||
|
|
# define SINGLE_THREAD_P \
|
||
|
|
__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
|
||
|
|
header.data.multiple_threads) == 0, 1)
|
||
|
|
# else
|
||
|
|
# define SINGLE_THREAD_P(reg) \
|
||
|
|
ear reg,%a0; \
|
||
|
|
icm reg,15,MULTIPLE_THREADS_OFFSET(reg);
|
||
|
|
# endif
|
||
|
|
|
||
|
|
#elif !defined __ASSEMBLER__
|
||
|
|
|
||
|
|
/* This code should never be used but we define it anyhow. */
|
||
|
|
# define SINGLE_THREAD_P (1)
|
||
|
|
|
||
|
|
#endif
|