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/* Copyright (C) 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
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>
#include <pt-machine.h>
#ifndef __ASSEMBLER__
# include <linuxthreads/internals.h>
#endif
#if !defined NOT_IN_libc || defined IS_IN_libpthread
# undef PSEUDO
# define PSEUDO(name, syscall_name, args) \
.text; \
ENTRY (name) \
SINGLE_THREAD_P; \
jne L(pseudo_cancel); \
DO_CALL (syscall_name, args); \
cmpq $-4095, %rax; \
jae SYSCALL_ERROR_LABEL; \
ret; \
L(pseudo_cancel): \
SAVESTK_##args \
PUSHARGS_##args \
CENABLE \
POPARGS_##args \
movq %rax, OLDTYPE_##args; \
movq $SYS_ify (syscall_name), %rax; \
syscall; \
xchgq %rax, OLDTYPE_##args; \
CDISABLE \
movq OLDTYPE_##args, %rax; \
RESTSTK_##args \
cmpq $-4095, %rax; \
jae SYSCALL_ERROR_LABEL; \
L(pseudo_end):
# define PUSHARGS_0 /* Nothing. */
# define PUSHARGS_1 PUSHARGS_0 movq %rdi, (%rsp);
# define PUSHARGS_2 PUSHARGS_1 movq %rsi, 8(%rsp);
# define PUSHARGS_3 PUSHARGS_2 movq %rdx, 16(%rsp);
# define PUSHARGS_4 PUSHARGS_3 movq %rcx, 24(%rsp);
# define PUSHARGS_5 PUSHARGS_4 movq %r8, 32(%rsp);
# define PUSHARGS_6 PUSHARGS_5 movq %r9, 40(%rsp);
# define POPARGS_0 /* Nothing. */
# define POPARGS_1 POPARGS_0 movq (%rsp), %rdi;
# define POPARGS_2 POPARGS_1 movq 8(%rsp), %rsi;
# define POPARGS_3 POPARGS_2 movq 16(%rsp), %rdx;
# define POPARGS_4 POPARGS_3 movq 24(%rsp), %r10;
# define POPARGS_5 POPARGS_4 movq 32(%rsp), %r8;
# define POPARGS_6 POPARGS_5 movq 40(%rsp), %r9;
# define SAVESTK_0 /* Nothing. */
# define SAVESTK_1 subq $16, %rsp;
# define SAVESTK_2 SAVESTK_1;
# define SAVESTK_3 subq $32, %rsp;
# define SAVESTK_4 SAVESTK_3;
# define SAVESTK_5 subq $48, %rsp;
# define SAVESTK_6 subq $64, %rsp;
# define RESTSTK_0 /* Nothing. */
# define RESTSTK_1 addq $16, %rsp;
# define RESTSTK_2 RESTSTK_1;
# define RESTSTK_3 addq $32, %rsp;
# define RESTSTK_4 RESTSTK_3;
# define RESTSTK_5 addq $48, %rsp;
# define RESTSTK_6 addq $64, %rsp;
# define OLDTYPE_0 %r9
# define OLDTYPE_1 OLDTYPE_0
# define OLDTYPE_2 OLDTYPE_0
# define OLDTYPE_3 OLDTYPE_0
# define OLDTYPE_4 OLDTYPE_0
# define OLDTYPE_5 OLDTYPE_0
# define OLDTYPE_6 48(%rsp)
# ifdef IS_IN_libpthread
# define CENABLE call __pthread_enable_asynccancel;
# define CDISABLE call __pthread_disable_asynccancel;
# define __local_multiple_threads __pthread_multiple_threads
# else
# define CENABLE call __libc_enable_asynccancel;
# define CDISABLE call __libc_disable_asynccancel;
# 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 cmpl $0, __local_multiple_threads(%rip)
# 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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