diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/x86_64/getcontext.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/x86_64/getcontext.S | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/sysdeps/unix/sysv/linux/x86_64/getcontext.S b/sysdeps/unix/sysv/linux/x86_64/getcontext.S deleted file mode 100644 index fed47d0f5d..0000000000 --- a/sysdeps/unix/sysv/linux/x86_64/getcontext.S +++ /dev/null @@ -1,87 +0,0 @@ -/* Save current context. - Copyright (C) 2002-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Andreas Jaeger <aj@suse.de>, 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, see - <http://www.gnu.org/licenses/>. */ - -#include <sysdep.h> - -#include "ucontext_i.h" - -/* int __getcontext (ucontext_t *ucp) - - Saves the machine context in UCP such that when it is activated, - it appears as if __getcontext() returned again. - - This implementation is intended to be used for *synchronous* context - switches only. Therefore, it does not have to save anything - other than the PRESERVED state. */ - - -ENTRY(__getcontext) - /* Save the preserved registers, the registers used for passing - args, and the return address. */ - movq %rbx, oRBX(%rdi) - movq %rbp, oRBP(%rdi) - movq %r12, oR12(%rdi) - movq %r13, oR13(%rdi) - movq %r14, oR14(%rdi) - movq %r15, oR15(%rdi) - - movq %rdi, oRDI(%rdi) - movq %rsi, oRSI(%rdi) - movq %rdx, oRDX(%rdi) - movq %rcx, oRCX(%rdi) - movq %r8, oR8(%rdi) - movq %r9, oR9(%rdi) - - movq (%rsp), %rcx - movq %rcx, oRIP(%rdi) - leaq 8(%rsp), %rcx /* Exclude the return address. */ - movq %rcx, oRSP(%rdi) - - /* We have separate floating-point register content memory on the - stack. We use the __fpregs_mem block in the context. Set the - links up correctly. */ - - leaq oFPREGSMEM(%rdi), %rcx - movq %rcx, oFPREGS(%rdi) - /* Save the floating-point environment. */ - fnstenv (%rcx) - fldenv (%rcx) - stmxcsr oMXCSR(%rdi) - - /* Save the current signal mask with - rt_sigprocmask (SIG_BLOCK, NULL, set,_NSIG/8). */ - leaq oSIGMASK(%rdi), %rdx - xorl %esi,%esi -#if SIG_BLOCK == 0 - xorl %edi, %edi -#else - movl $SIG_BLOCK, %edi -#endif - movl $_NSIG8,%r10d - movl $__NR_rt_sigprocmask, %eax - syscall - cmpq $-4095, %rax /* Check %rax for error. */ - jae SYSCALL_ERROR_LABEL /* Jump to error handler if error. */ - - /* All done, return 0 for success. */ - xorl %eax, %eax - ret -PSEUDO_END(__getcontext) - -weak_alias (__getcontext, getcontext) |