From 7b44a5e0a7a87304a4dc5ac8478579f5caa7f6a1 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Mon, 10 Mar 2003 08:00:02 +0000 Subject: Update. * sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h: New file. --- nptl/ChangeLog | 2 + .../sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h | 115 +++++++++++++++++++++ 2 files changed, 117 insertions(+) create mode 100644 nptl/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h diff --git a/nptl/ChangeLog b/nptl/ChangeLog index 91679b97d3..ba58d28da8 100644 --- a/nptl/ChangeLog +++ b/nptl/ChangeLog @@ -1,5 +1,7 @@ 2003-03-09 Ulrich Drepper + * sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h: New file. + * sysdeps/unix/sysv/linux/x86_64/pthread_once.S: Fix many leftovers from the ia32 code. diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h b/nptl/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h new file mode 100644 index 0000000000..fde001d4a6 --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h @@ -0,0 +1,115 @@ +/* Copyright (C) 2002, 2003 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 + +# undef PSEUDO +# define PSEUDO(name, syscall_name, args) \ + .text; \ + ENTRY (name) \ + SINGLE_THREAD_P; \ + jne L(pseudo_cancel); \ + DO_CALL (syscall_name, args); \ + cmpq $-4095, %rax; \ + jae SYSCALL_ERROR_LABEL; \ + ret; \ + 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); \ + movq $SYS_ify (syscall_name), %rax; \ + 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; +# define SAVESTK_1 SAVESTK_0 +# define SAVESTK_2 SAVESTK_1 +# define SAVESTK_3 subq $40, %rsp; +# define SAVESTK_4 SAVESTK_3 +# define SAVESTK_5 subq $56, %rsp; +# define SAVESTK_6 SAVESTK_5 + +# define RESTSTK_0 addq $24,%rsp; +# define RESTSTK_1 RESTSTK_0 +# define RESTSTK_2 RESTSTK_1 +# define RESTSTK_3 addq $40, %rsp; +# define RESTSTK_4 RESTSTK_3 +# define RESTSTK_5 addq $56, %rsp; +# 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 +# else +# define CENABLE call __libc_enable_asynccancel; +# define CDISABLE call __libc_disable_asynccancel; +# define __local_multiple_threads __libc_multiple_threads +# endif + +# 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 + +#elif !defined __ASSEMBLER__ + +/* This code should never be used but we define it anyhow. */ +# define SINGLE_THREAD_P (1) + +#endif -- cgit 1.4.1