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/* Copyright (C) 2003-2017 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, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <tls.h>
#ifndef __ASSEMBLER__
# include <nptl/pthreadP.h>
#endif
#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
# undef PSEUDO
# define PSEUDO(name, syscall_name, args) \
.text; \
L(pseudo_cancel): \
cfi_startproc; \
STM_##args \
stm %r12,%r15,48(%r15); \
cfi_offset (%r15, -36); \
cfi_offset (%r14, -40); \
cfi_offset (%r13, -44); \
cfi_offset (%r12, -48); \
lr %r14,%r15; \
ahi %r15,-96; \
cfi_adjust_cfa_offset (96); \
st %r14,0(%r15); \
basr %r13,0; \
0: l %r1,1f-0b(%r13); \
bas %r14,0(%r1,%r13); \
lr %r0,%r2; \
LM_##args \
.if SYS_ify (syscall_name) < 256; \
svc SYS_ify (syscall_name); \
.else; \
lhi %r1,SYS_ify (syscall_name); \
svc 0; \
.endif; \
LR7_##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); \
cfi_endproc; \
j L(pseudo_check); \
1: .long CENABLE-0b; \
2: .long CDISABLE-0b; \
ENTRY(name) \
SINGLE_THREAD_P(%r1) \
jne L(pseudo_cancel); \
.type __##syscall_name##_nocancel,@function; \
.globl __##syscall_name##_nocancel; \
__##syscall_name##_nocancel: \
DO_CALL(syscall_name, args); \
L(pseudo_check): \
lhi %r4,-4095; \
clr %r2,%r4; \
jnl SYSCALL_ERROR_LABEL; \
.size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel; \
L(pseudo_end):
# if IS_IN (libpthread)
# define CENABLE __pthread_enable_asynccancel
# define CDISABLE __pthread_disable_asynccancel
# elif IS_IN (libc)
# define CENABLE __libc_enable_asynccancel
# define CDISABLE __libc_disable_asynccancel
# elif IS_IN (librt)
# define CENABLE __librt_enable_asynccancel
# define CDISABLE __librt_disable_asynccancel
# else
# error Unsupported library
# 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 STM_6 stm %r2,%r7,8(%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);
#define LM_6 lm %r2,%r5,8+96(%r15); \
cfi_offset (%r7, -68); \
l %r7,96+96(%r15);
#define LR7_0 /* Nothing */
#define LR7_1 /* Nothing */
#define LR7_2 /* Nothing */
#define LR7_3 /* Nothing */
#define LR7_4 /* Nothing */
#define LR7_5 /* Nothing */
#define LR7_6 l %r7,28+96(%r15); \
cfi_restore (%r7);
# ifndef __ASSEMBLER__
# define SINGLE_THREAD_P \
__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
header.multiple_threads) == 0, 1)
# else
# define SINGLE_THREAD_P(reg) \
ear reg,%a0; \
icm reg,15,MULTIPLE_THREADS_OFFSET(reg);
# endif
#elif !defined __ASSEMBLER__
# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION 1
#endif
#ifndef __ASSEMBLER__
# define RTLD_SINGLE_THREAD_P \
__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
header.multiple_threads) == 0, 1)
#endif
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