projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 0ecb606c JJ |
1 | /* Install given context. |
| 2 | Copyright (C) 2005 Free Software Foundation, Inc. | |
| 3 | This file is part of the GNU C Library. | |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 16 | License along with the GNU C Library; if not, write to the Free | |
| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
| 18 | 02111-1307 USA. */ | |
| 19 | ||
| 20 | #include <sysdep.h> | |
| 21 | ||
| 22 | #include "ucontext_i.h" | |
| 23 | ||
| 24 | /* int __setcontext (const ucontext_t *uc); */ | |
| 25 | ||
| 26 | .text | |
| 27 | .align 5 | |
| 28 | ENTRY(__setcontext) | |
| 29 | ||
| 30 | mov r4, r8 | |
| 31 | ||
| 32 | /* sigprocmask (SIG_SETMASK, &uc->uc_sigmask, NULL). */ | |
| 33 | mov r4, r5 | |
| 34 | add #oSIGMASK, r5 | |
| 35 | mov #SIG_SETMASK, r4 | |
| 36 | mov #0, r6 | |
| 37 | mov #+SYS_ify(sigprocmask), r3 | |
| 38 | trapa #0x13 | |
| 39 | mov r0, r1 | |
| 40 | mov #-12, r2 | |
| 41 | shad r2, r1 | |
| 42 | not r1, r1 // r1=0 means r0 = -1 to -4095 | |
| 43 | tst r1, r1 // i.e. error in linux | |
| 44 | bf .Lsetcontext_restore | |
| 45 | .Lsyscall_error: | |
| 46 | SYSCALL_ERROR_HANDLER | |
| 47 | .Lpseudo_end: | |
| 48 | rts | |
| 49 | nop | |
| 50 | ||
| 51 | .Lsetcontext_restore: | |
| 52 | mov r8, r0 | |
| 53 | add #(oPC), r0 | |
| 54 | mov.l @r0+, r2 | |
| 55 | lds.l @r0+, pr | |
| 56 | ||
| 57 | /* Restore T frag. */ | |
| 58 | mov.l @r0+, r1 | |
| 59 | shlr r1 | |
| 60 | /* Skip GBR which is used for thread pointer. */ | |
| 61 | add #4, r0 | |
| 62 | ||
| 63 | lds.l @r0+, mach | |
| 64 | lds.l @r0+, macl | |
| 65 | ||
| 66 | mov r8, r0 | |
| 67 | add #(oR9), r0 | |
| 68 | mov.l @r0+, r9 | |
| 69 | mov.l @r0+, r10 | |
| 70 | mov.l @r0+, r11 | |
| 71 | mov.l @r0+, r12 | |
| 72 | mov.l @r0+, r13 | |
| 73 | mov.l @r0+, r14 | |
| 74 | mov.l @r0+, r15 | |
| 75 | ||
| 76 | mov r8, r0 | |
| 77 | mov.l @(oR0,r0), r1 | |
| 78 | mov.l r1, @-r15 | |
| 79 | cfi_adjust_cfa_offset(4) | |
| 80 | cfi_rel_offset (r1, 0) | |
| 81 | mov.l r2, @-r15 | |
| 82 | cfi_adjust_cfa_offset(4) | |
| 83 | cfi_rel_offset (r2, 0) | |
| 84 | ||
| 85 | mov.l @(oR1,r0), r1 | |
| 86 | mov.l @(oR2,r0), r2 | |
| 87 | mov.l @(oR3,r0), r3 | |
| 88 | mov.l @(oR4,r0), r4 | |
| 89 | mov.l @(oR5,r0), r5 | |
| 90 | mov.l @(oR6,r0), r6 | |
| 91 | mov.l @(oR7,r0), r7 | |
| 92 | mov.l @(oR8,r0), r8 | |
| 93 | mov.l @r15+, r0 | |
| 94 | jmp @r0 | |
| 95 | mov.l @r15+, r0 | |
| 96 | ||
| 97 | PSEUDO_END(__setcontext) | |
| 98 | ||
| 99 | weak_alias (__setcontext, setcontext) |