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- /* Copyright (C) 2002, 2003, 2004, 2005 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 <tls.h>
- #include <pt-machine.h>
- #ifndef __ASSEMBLER__
- # include <linuxthreads/internals.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); \
- 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 && USE___THREAD && 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 && USE___THREAD
- # 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 || !USE___THREAD
- # 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
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