diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/getcontext.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/getcontext.S | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/getcontext.S b/sysdeps/unix/sysv/linux/i386/getcontext.S deleted file mode 100644 index 591c3885a5..0000000000 --- a/sysdeps/unix/sysv/linux/i386/getcontext.S +++ /dev/null @@ -1,83 +0,0 @@ -/* Save current context. - Copyright (C) 2001-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@redhat.com>, 2001. - - 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" - - -ENTRY(__getcontext) - /* Load address of the context data structure. */ - movl 4(%esp), %eax - - /* Return value of getcontext. EAX is the only register whose - value is not preserved. */ - movl $0, oEAX(%eax) - - /* Save the 32-bit register values and the return address. */ - movl %ecx, oECX(%eax) - movl %edx, oEDX(%eax) - movl %edi, oEDI(%eax) - movl %esi, oESI(%eax) - movl %ebp, oEBP(%eax) - movl (%esp), %ecx - movl %ecx, oEIP(%eax) - leal 4(%esp), %ecx /* Exclude the return address. */ - movl %ecx, oESP(%eax) - movl %ebx, oEBX(%eax) - - /* Save the FS segment register. We don't touch the GS register - since it is used for threads. */ - xorl %edx, %edx - movw %fs, %dx - movl %edx, oFS(%eax) - - /* 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. */ - leal oFPREGSMEM(%eax), %ecx - movl %ecx, oFPREGS(%eax) - /* Save the floating-point context. */ - fnstenv (%ecx) - /* And load it right back since the processor changes the mask. - Intel thought this opcode to be used in interrupt handlers which - would block all exceptions. */ - fldenv (%ecx) - - /* Save the current signal mask. */ - pushl %ebx - cfi_adjust_cfa_offset (4) - cfi_rel_offset (ebx, 0) - leal oSIGMASK(%eax), %edx - xorl %ecx, %ecx - movl $SIG_BLOCK, %ebx - movl $__NR_sigprocmask, %eax - ENTER_KERNEL - popl %ebx - cfi_adjust_cfa_offset (-4) - cfi_restore (ebx) - cmpl $-4095, %eax /* Check %eax 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) |