| /* Install given context. |
| Copyright (C) 2005 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, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <sysdep.h> |
| |
| #include "ucontext_i.h" |
| |
| /* int __setcontext (const ucontext_t *uc); */ |
| |
| .text |
| .align 5 |
| ENTRY(__setcontext) |
| |
| mov r4, r8 |
| |
| /* sigprocmask (SIG_SETMASK, &uc->uc_sigmask, NULL). */ |
| mov r4, r5 |
| add #oSIGMASK, r5 |
| mov #SIG_SETMASK, r4 |
| mov #0, r6 |
| mov #+SYS_ify(sigprocmask), r3 |
| trapa #0x13 |
| mov r0, r1 |
| mov #-12, r2 |
| shad r2, r1 |
| not r1, r1 // r1=0 means r0 = -1 to -4095 |
| tst r1, r1 // i.e. error in linux |
| bf .Lsetcontext_restore |
| .Lsyscall_error: |
| SYSCALL_ERROR_HANDLER |
| .Lpseudo_end: |
| rts |
| nop |
| |
| .Lsetcontext_restore: |
| mov r8, r0 |
| add #(oPC), r0 |
| mov.l @r0+, r2 |
| lds.l @r0+, pr |
| |
| /* Restore T frag. */ |
| mov.l @r0+, r1 |
| shlr r1 |
| /* Skip GBR which is used for thread pointer. */ |
| add #4, r0 |
| |
| lds.l @r0+, mach |
| lds.l @r0+, macl |
| |
| mov r8, r0 |
| add #(oR9), r0 |
| mov.l @r0+, r9 |
| mov.l @r0+, r10 |
| mov.l @r0+, r11 |
| mov.l @r0+, r12 |
| mov.l @r0+, r13 |
| mov.l @r0+, r14 |
| mov.l @r0+, r15 |
| |
| mov r8, r0 |
| mov.l @(oR0,r0), r1 |
| mov.l r1, @-r15 |
| cfi_adjust_cfa_offset(4) |
| cfi_rel_offset (r1, 0) |
| mov.l r2, @-r15 |
| cfi_adjust_cfa_offset(4) |
| cfi_rel_offset (r2, 0) |
| |
| mov.l @(oR1,r0), r1 |
| mov.l @(oR2,r0), r2 |
| mov.l @(oR3,r0), r3 |
| mov.l @(oR4,r0), r4 |
| mov.l @(oR5,r0), r5 |
| mov.l @(oR6,r0), r6 |
| mov.l @(oR7,r0), r7 |
| mov.l @(oR8,r0), r8 |
| mov.l @r15+, r0 |
| jmp @r0 |
| mov.l @r15+, r0 |
| |
| PSEUDO_END(__setcontext) |
| |
| weak_alias (__setcontext, setcontext) |
