mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-27 04:41:02 +08:00
96 lines
3.1 KiB
ArmAsm
96 lines
3.1 KiB
ArmAsm
/* Copyright (C) 2011 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
|
|
|
|
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 <arch/abi.h>
|
|
|
|
#include "ucontext_i.h"
|
|
|
|
/* int getcontext (ucontext_t *ucp) */
|
|
|
|
.text
|
|
ENTRY (__getcontext)
|
|
FEEDBACK_ENTER(__getcontext)
|
|
|
|
/* Save the callee-saved GPRs. There's no need to save the
|
|
caller-saved GPRs since the eventual setcontext() or
|
|
swapcontext() will assume those registers are all dead.
|
|
Save value "1" to uc_flags to later recognize getcontext(). */
|
|
{ movei r11, 1; ADDI_PTR r10, r0, UC_FLAGS_OFFSET }
|
|
{ ST_PTR r10, r11; addli r10, r0, UC_REG(30) }
|
|
{ ST r10, r30; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r31; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r32; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r33; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r34; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r35; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r36; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r37; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r38; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r39; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r40; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r41; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r42; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r43; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r44; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r45; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r46; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r47; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r48; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r49; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r50; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r51; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, r52; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, tp; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, sp; ADDI_PTR r10, r10, REGSIZE }
|
|
{ ST r10, lr; ADDI_PTR r10, r10, REGSIZE }
|
|
lnk r11 /* Point PC at the "jrp lr" instruction. */
|
|
addli r11, r11, .Lreturn - .
|
|
{ ST r10, r11; ADDI_PTR r10, r10, REGSIZE }
|
|
mfspr r11, INTERRUPT_CRITICAL_SECTION
|
|
{
|
|
ST r10, r11
|
|
movei r1, 0
|
|
}
|
|
|
|
/* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG / 8) */
|
|
{
|
|
movei r3, _NSIG / 8
|
|
addli r2, r0, UC_SIGMASK_OFFSET
|
|
}
|
|
{
|
|
movei r0, SIG_BLOCK
|
|
moveli TREG_SYSCALL_NR_NAME, __NR_rt_sigprocmask
|
|
}
|
|
swint1
|
|
BNEZ r1, .Lsyscall_error
|
|
|
|
.Lreturn:
|
|
{
|
|
movei r0, 0
|
|
jrp lr
|
|
}
|
|
|
|
.Lsyscall_error:
|
|
j SYSCALL_ERROR_NAME
|
|
|
|
END (__getcontext)
|
|
.hidden __getcontext
|
|
|
|
weak_alias (__getcontext, getcontext)
|