diff options
Diffstat (limited to 'ports/sysdeps/unix/sysv/linux/am33/linuxthreads/sysdep-cancel.h')
| -rw-r--r-- | ports/sysdeps/unix/sysv/linux/am33/linuxthreads/sysdep-cancel.h | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/am33/linuxthreads/sysdep-cancel.h b/ports/sysdeps/unix/sysv/linux/am33/linuxthreads/sysdep-cancel.h new file mode 100644 index 0000000000..5f3dab5c40 --- /dev/null +++ b/ports/sysdeps/unix/sysv/linux/am33/linuxthreads/sysdep-cancel.h @@ -0,0 +1,158 @@ +/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Alexandre Oliva <aoliva@redhat.com> + + 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> +#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) \ + PUSHARGS_##args \ + DOARGS_##args \ + SINGLE_THREAD_P; \ + bne L(pseudo_cancel); \ + mov SYS_ify (syscall_name),d0; \ + syscall 0 \ + POPARGS_##args ; \ + cmp -126,d0; \ + bls L(pseudo_end); \ + jmp SYSCALL_ERROR_LABEL; \ + L(pseudo_cancel): \ + add -(16+STACK_SPACE (args)),sp; \ + SAVE_ARGS_##args \ + CENABLE \ + mov d0,r0; \ + LOAD_ARGS_##args \ + mov SYS_ify (syscall_name),d0; \ + syscall 0; \ + mov d0,(12,sp); \ + mov r0,d0; \ + CDISABLE \ + mov (12,sp),d0; \ + add +16+STACK_SPACE (args),sp \ + POPARGS_##args ; \ + cmp -126,d0; \ + bls L(pseudo_end); \ + jmp SYSCALL_ERROR_LABEL; \ + L(pseudo_end): \ + mov d0,a0 + +/* Reserve up to 2 stack slots for a0 and d1, but fewer than that if + we don't have that many arguments. */ +# define STACK_SPACE(n) (((((n) < 3) * (2 - (n))) + 2) * 4) + +# define SAVE_ARGS_0 +# define SAVE_ARGS_1 mov a0,(20,sp) ; +# define SAVE_ARGS_2 SAVE_ARGS_1 mov d1,(24,sp) ; +# define SAVE_ARGS_3 SAVE_ARGS_2 +# define SAVE_ARGS_4 SAVE_ARGS_3 +# define SAVE_ARGS_5 SAVE_ARGS_4 +# define SAVE_ARGS_6 SAVE_ARGS_5 + +# define LOAD_ARGS_0 +# define LOAD_ARGS_1 mov (20,sp),a0 ; +# define LOAD_ARGS_2 LOAD_ARGS_1 mov (24,sp),d1 ; +# define LOAD_ARGS_3 LOAD_ARGS_2 +# define LOAD_ARGS_4 LOAD_ARGS_3 +# define LOAD_ARGS_5 LOAD_ARGS_4 +# define LOAD_ARGS_6 LOAD_ARGS_5 + +# ifdef IS_IN_libpthread +# define CENABLE call __pthread_enable_asynccancel,[],0; +# define CDISABLE call __pthread_disable_asynccancel,[],0; +# elif defined IS_IN_librt +# ifdef PIC +# define CENABLE movm [a2],(sp); \ + 1: mov pc,a2; \ + add _GLOBAL_OFFSET_TABLE_-(1b-.),a2; \ + call +__librt_enable_asynccancel@PLT,[],0; \ + movm (sp),[a2]; +# define CENABLE movm [a2],(sp); \ + 1: mov pc,a2; \ + add _GLOBAL_OFFSET_TABLE_-(1b-.),a2; \ + call +__librt_disable_asynccancel@PLT,[],0; \ + movm (sp),[a2]; +# else +# define CENABLE call +__librt_enable_asynccancel,[],0; +# define CDISABLE call +__librt_disable_asynccancel,[],0; +# endif +# else +# define CENABLE call +__libc_enable_asynccancel,[],0; +# define CDISABLE call +__libc_disable_asynccancel,[],0; +# endif + +#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 \ + mov (+__local_multiple_threads),d0; \ + cmp 0,d0 +# elif !defined NOT_IN_libc || defined IS_IN_libpthread +# define SINGLE_THREAD_P \ + movm [a2],(sp); \ + 1: mov pc,a2; \ + add _GLOBAL_OFFSET_TABLE_-(1b-.),a2; \ + mov (+__local_multiple_threads@GOTOFF,a2),d0; \ + movm (sp),[a2]; \ + cmp 0,d0 +# else +# define SINGLE_THREAD_P \ + movm [a2],(sp); \ + 1: mov pc,a2; \ + add _GLOBAL_OFFSET_TABLE_-(1b-.),a2; \ + mov (+__local_multiple_threads@GOT,a2),a2; \ + mov (a2),d0; \ + movm (sp),[a2]; \ + cmp 0,d0 +# endif +# endif + +#elif !defined __ASSEMBLER__ + +/* This code should never be used but we define it anyhow. */ +# define SINGLE_THREAD_P (1) + +#endif |