/* Copyright (C) 2002, 2003, 2004, 2005, 2006 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>#ifndef __ASSEMBLER__# include <nptl/pthreadP.h>#endif#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt# undef PSEUDO# define PSEUDO(name, syscall_name, args)				      \  .text;								      \  ENTRY (name)								      \    SINGLE_THREAD_P;							      \    jne L(pseudo_cancel);						      \  .type __##syscall_name##_nocancel,@function;				      \  .globl __##syscall_name##_nocancel;					      \  __##syscall_name##_nocancel:						      \    DO_CALL (syscall_name, args);					      \    cmpq $-4095, %rax;							      \    jae SYSCALL_ERROR_LABEL;						      \    ret;								      \  .size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel;	      \  L(pseudo_cancel):							      \    /* Save registers that might get destroyed.  */			      \    SAVESTK_##args							      \    PUSHARGS_##args							      \    CENABLE								      \    /* Restore registers.  */						      \    POPARGS_##args							      \    /* The return value from CENABLE is argument for CDISABLE.  */	      \    movq %rax, (%rsp);							      \    movl $SYS_ify (syscall_name), %eax;					      \    syscall;								      \    movq (%rsp), %rdi;							      \    /* Save %rax since it's the error code from the syscall.  */	      \    movq %rax, 8(%rsp);							      \    CDISABLE								      \    movq 8(%rsp), %rax;							      \    RESTSTK_##args							      \    cmpq $-4095, %rax;							      \    jae SYSCALL_ERROR_LABEL;						      \  L(pseudo_end):# define PUSHARGS_0	/* Nothing.  */# define PUSHARGS_1	PUSHARGS_0 movq %rdi, 8(%rsp);# define PUSHARGS_2	PUSHARGS_1 movq %rsi, 16(%rsp);# define PUSHARGS_3	PUSHARGS_2 movq %rdx, 24(%rsp);# define PUSHARGS_4	PUSHARGS_3 movq %rcx, 32(%rsp);# define PUSHARGS_5	PUSHARGS_4 movq %r8, 40(%rsp);# define PUSHARGS_6	PUSHARGS_5 movq %r9, 48(%rsp);# define POPARGS_0	/* Nothing.  */# define POPARGS_1	POPARGS_0 movq 8(%rsp), %rdi;# define POPARGS_2	POPARGS_1 movq 16(%rsp), %rsi;# define POPARGS_3	POPARGS_2 movq 24(%rsp), %rdx;# define POPARGS_4	POPARGS_3 movq 32(%rsp), %r10;# define POPARGS_5	POPARGS_4 movq 40(%rsp), %r8;# define POPARGS_6	POPARGS_5 movq 48(%rsp), %r9;/* We always have to align the stack before calling a function.  */# define SAVESTK_0	subq $24, %rsp; cfi_adjust_cfa_offset (24);# define SAVESTK_1	SAVESTK_0# define SAVESTK_2	SAVESTK_1# define SAVESTK_3	subq $40, %rsp; cfi_adjust_cfa_offset (40);# define SAVESTK_4	SAVESTK_3# define SAVESTK_5	subq $56, %rsp; cfi_adjust_cfa_offset (56);# define SAVESTK_6	SAVESTK_5# define RESTSTK_0	addq $24,%rsp; cfi_adjust_cfa_offset (-24);# define RESTSTK_1	RESTSTK_0# define RESTSTK_2	RESTSTK_1# define RESTSTK_3	addq $40, %rsp; cfi_adjust_cfa_offset (-40);# define RESTSTK_4	RESTSTK_3# define RESTSTK_5	addq $56, %rsp; cfi_adjust_cfa_offset (-56);# define RESTSTK_6	RESTSTK_5# ifdef IS_IN_libpthread#  define CENABLE	call __pthread_enable_asynccancel;#  define CDISABLE	call __pthread_disable_asynccancel;#  define __local_multiple_threads __pthread_multiple_threads# elif !defined NOT_IN_libc#  define CENABLE	call __libc_enable_asynccancel;#  define CDISABLE	call __libc_disable_asynccancel;#  define __local_multiple_threads __libc_multiple_threads# elif defined IS_IN_librt#  define CENABLE	call __librt_enable_asynccancel;#  define CDISABLE	call __librt_disable_asynccancel;# else#  error Unsupported library# endif# if defined IS_IN_libpthread || !defined NOT_IN_libc#  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# else#  ifndef __ASSEMBLER__#   define SINGLE_THREAD_P \  __builtin_expect (THREAD_GETMEM (THREAD_SELF, \				   header.multiple_threads) == 0, 1)#  else#   define SINGLE_THREAD_P cmpl $0, %fs:MULTIPLE_THREADS_OFFSET#  endif# 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