/* Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Jakub Jelinek , 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 #include #ifndef __ASSEMBLER__ # include #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); \ DO_CALL (syscall_name, args); \ cmpl $-4095, %eax; \ jae SYSCALL_ERROR_LABEL; \ ret; \ L(pseudo_cancel): \ CENABLE \ SAVE_OLDTYPE_##args \ PUSHCARGS_##args \ DOCARGS_##args \ movl $SYS_ify (syscall_name), %eax; \ int $0x80 \ POPCARGS_##args; \ POPSTATE_##args \ cmpl $-4095, %eax; \ jae SYSCALL_ERROR_LABEL; \ L(pseudo_end): # define SAVE_OLDTYPE_0 movl %eax, %ecx; # define SAVE_OLDTYPE_1 SAVE_OLDTYPE_0 # define SAVE_OLDTYPE_2 pushl %eax; cfi_adjust_cfa_offset (4); # define SAVE_OLDTYPE_3 SAVE_OLDTYPE_2 # define SAVE_OLDTYPE_4 SAVE_OLDTYPE_2 # define SAVE_OLDTYPE_5 SAVE_OLDTYPE_2 # define PUSHCARGS_0 /* No arguments to push. */ # define DOCARGS_0 /* No arguments to frob. */ # define POPCARGS_0 /* No arguments to pop. */ # define _PUSHCARGS_0 /* No arguments to push. */ # define _POPCARGS_0 /* No arguments to pop. */ # define PUSHCARGS_1 movl %ebx, %edx; cfi_register (ebx, edx); PUSHCARGS_0 # define DOCARGS_1 _DOARGS_1 (4) # define POPCARGS_1 POPCARGS_0; movl %edx, %ebx; cfi_restore (ebx); # define _PUSHCARGS_1 pushl %ebx; cfi_adjust_cfa_offset (4); \ cfi_rel_offset (ebx, 0); _PUSHCARGS_0 # define _POPCARGS_1 _POPCARGS_0; popl %ebx; \ cfi_adjust_cfa_offset (-4); cfi_restore (ebx); # define PUSHCARGS_2 PUSHCARGS_1 # define DOCARGS_2 _DOARGS_2 (12) # define POPCARGS_2 POPCARGS_1 # define _PUSHCARGS_2 _PUSHCARGS_1 # define _POPCARGS_2 _POPCARGS_1 # define PUSHCARGS_3 _PUSHCARGS_2 # define DOCARGS_3 _DOARGS_3 (20) # define POPCARGS_3 _POPCARGS_3 # define _PUSHCARGS_3 _PUSHCARGS_2 # define _POPCARGS_3 _POPCARGS_2 # define PUSHCARGS_4 _PUSHCARGS_4 # define DOCARGS_4 _DOARGS_4 (28) # define POPCARGS_4 _POPCARGS_4 # define _PUSHCARGS_4 pushl %esi; cfi_adjust_cfa_offset (4); \ cfi_rel_offset (esi, 0); _PUSHCARGS_3 # define _POPCARGS_4 _POPCARGS_3; popl %esi; \ cfi_adjust_cfa_offset (-4); cfi_restore (esi); # define PUSHCARGS_5 _PUSHCARGS_5 # define DOCARGS_5 _DOARGS_5 (36) # define POPCARGS_5 _POPCARGS_5 # define _PUSHCARGS_5 pushl %edi; cfi_adjust_cfa_offset (4); \ cfi_rel_offset (edi, 0); _PUSHCARGS_4 # define _POPCARGS_5 _POPCARGS_4; popl %edi; \ cfi_adjust_cfa_offset (-4); cfi_restore (edi); # ifdef IS_IN_libpthread # define CENABLE call __pthread_enable_asynccancel; # define CDISABLE call __pthread_disable_asynccancel # elif defined IS_IN_librt # ifdef __PIC__ # define CENABLE pushl %ebx; \ call __i686.get_pc_thunk.bx; \ addl $_GLOBAL_OFFSET_TABLE_, %ebx; \ call __librt_enable_asynccancel@PLT; \ popl %ebx; # define CDISABLE pushl %ebx; \ call __i686.get_pc_thunk.bx; \ addl $_GLOBAL_OFFSET_TABLE_, %ebx; \ call __librt_disable_asynccancel@PLT; \ popl %ebx; # else # define CENABLE call __librt_enable_asynccancel; # define CDISABLE call __librt_disable_asynccancel # endif # else # define CENABLE call __libc_enable_asynccancel; # define CDISABLE call __libc_disable_asynccancel # endif # define POPSTATE_0 \ pushl %eax; cfi_adjust_cfa_offset (4); movl %ecx, %eax; \ CDISABLE; popl %eax; cfi_adjust_cfa_offset (-4); # define POPSTATE_1 POPSTATE_0 # define POPSTATE_2 xchgl (%esp), %eax; CDISABLE; popl %eax; \ cfi_adjust_cfa_offset (-4); # define POPSTATE_3 POPSTATE_2 # define POPSTATE_4 POPSTATE_3 # define POPSTATE_5 POPSTATE_4 #if !defined NOT_IN_libc # define __local_multiple_threads __libc_multiple_threads #elif defined IS_IN_libpthread # define __local_multiple_threads __pthread_multiple_threads #else # define __local_multiple_threads __librt_multiple_threads #endif # ifndef __ASSEMBLER__ # if defined FLOATING_STACKS && defined __UCLIBC_HAS_TLS__ && defined __PIC__ # define SINGLE_THREAD_P \ __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ p_header.data.multiple_threads) == 0, 1) # else extern int __local_multiple_threads # if !defined NOT_IN_libc || defined IS_IN_libpthread attribute_hidden; # else ; # endif # define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1) # endif # else # if !defined __PIC__ # define SINGLE_THREAD_P cmpl $0, __local_multiple_threads # elif defined FLOATING_STACKS && defined __UCLIBC_HAS_TLS__ # define SINGLE_THREAD_P cmpl $0, %gs:MULTIPLE_THREADS_OFFSET # else # if !defined NOT_IN_libc || defined IS_IN_libpthread # define __SINGLE_THREAD_CMP cmpl $0, __local_multiple_threads@GOTOFF(%ecx) # else # define __SINGLE_THREAD_CMP \ movl __local_multiple_threads@GOT(%ecx), %ecx;\ cmpl $0, (%ecx) # endif # if !defined HAVE_HIDDEN || !defined __UCLIBC_HAS_TLS__ # define SINGLE_THREAD_P \ SETUP_PIC_REG (cx); \ addl $_GLOBAL_OFFSET_TABLE_, %ecx; \ __SINGLE_THREAD_CMP # else # define SINGLE_THREAD_P \ call __i686.get_pc_thunk.cx; \ addl $_GLOBAL_OFFSET_TABLE_, %ecx; \ __SINGLE_THREAD_CMP # endif # endif # endif #elif !defined __ASSEMBLER__ /* This code should never be used but we define it anyhow. */ # define SINGLE_THREAD_P (1) #endif