?? sysdep-cancel.h
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/* Copyright (C) 2002, 2003, 2004, 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; \ .globl __syscall_error; \ENTRY(name) \ ld [%g7 + MULTIPLE_THREADS_OFFSET], %g1;\ cmp %g1, 0; \ bne 1f; \.type __##syscall_name##_nocancel,@function; \.globl __##syscall_name##_nocancel; \__##syscall_name##_nocancel: \ mov SYS_ify(syscall_name), %g1; \ ta 0x10; \ bcc 8f; \ mov %o7, %g1; \ call __syscall_error; \ mov %g1, %o7; \8: jmpl %o7 + 8, %g0; \ nop; \.size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel;\1: save %sp, -96, %sp; \ cfi_def_cfa_register(%fp); \ cfi_window_save; \ cfi_register(%o7, %i7); \ CENABLE; \ nop; \ mov %o0, %l0; \ COPY_ARGS_##args \ mov SYS_ify(syscall_name), %g1; \ ta 0x10; \ bcc 1f; \ mov %o0, %l1; \ CDISABLE; \ mov %l0, %o0; \ call __syscall_error; \ mov %l1, %o0; \ b 2f; \ mov -1, %l1; \1: CDISABLE; \ mov %l0, %o0; \2: jmpl %i7 + 8, %g0; \ restore %g0, %l1, %o0;# ifdef IS_IN_libpthread# define CENABLE call __pthread_enable_asynccancel# define CDISABLE call __pthread_disable_asynccancel# elif !defined NOT_IN_libc# define CENABLE call __libc_enable_asynccancel# define CDISABLE call __libc_disable_asynccancel# elif defined IS_IN_librt# define CENABLE call __librt_enable_asynccancel# define CDISABLE call __librt_disable_asynccancel# else# error Unsupported library# endif#define COPY_ARGS_0 /* Nothing */#define COPY_ARGS_1 COPY_ARGS_0 mov %i0, %o0;#define COPY_ARGS_2 COPY_ARGS_1 mov %i1, %o1;#define COPY_ARGS_3 COPY_ARGS_2 mov %i2, %o2;#define COPY_ARGS_4 COPY_ARGS_3 mov %i3, %o3;#define COPY_ARGS_5 COPY_ARGS_4 mov %i4, %o4;#define COPY_ARGS_6 COPY_ARGS_5 mov %i5, %o5;# ifndef __ASSEMBLER__# define SINGLE_THREAD_P \ __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ header.multiple_threads) == 0, 1)# else# define SINGLE_THREAD_P ld [%g7 + MULTIPLE_THREADS_OFFSET], %g1# 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
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