diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/arm/swapcontext.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/arm/swapcontext.S | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/sysdeps/unix/sysv/linux/arm/swapcontext.S b/sysdeps/unix/sysv/linux/arm/swapcontext.S deleted file mode 100644 index 555da1fe0a..0000000000 --- a/sysdeps/unix/sysv/linux/arm/swapcontext.S +++ /dev/null @@ -1,63 +0,0 @@ -/* Copyright (C) 2012-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - 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" - - .syntax unified - .text - -/* int swapcontext (ucontext_t *oucp, const ucontext_t *ucp) */ - -ENTRY(swapcontext) - - /* Have getcontext() do most of the work then fix up - LR afterwards. Save R3 to keep the stack aligned. */ - push {r0,r1,r3,r14} - cfi_adjust_cfa_offset (16) - cfi_rel_offset (r0,0) - cfi_rel_offset (r1,4) - cfi_rel_offset (r3,8) - cfi_rel_offset (r14,12) - - bl __getcontext - mov r4, r0 - - pop {r0,r1,r3,r14} - cfi_adjust_cfa_offset (-16) - cfi_restore (r0) - cfi_restore (r1) - cfi_restore (r3) - cfi_restore (r14) - - /* Exit if getcontext() failed. */ - cmp r4, #0 - itt ne - movne r0, r4 - RETINSTR(ne, r14) - - /* Fix up LR and the PC. */ - str r13,[r0, #MCONTEXT_ARM_SP] - str r14,[r0, #MCONTEXT_ARM_LR] - str r14,[r0, #MCONTEXT_ARM_PC] - - /* And swap using swapcontext(). */ - mov r0, r1 - b __setcontext - -END(swapcontext) |