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76e95c88 | 1 | /* Install given context. |
d4697bc9 | 2 | Copyright (C) 2005-2014 Free Software Foundation, Inc. |
76e95c88 UD |
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 | |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
76e95c88 UD |
18 | |
19 | #include <sysdep.h> | |
20 | ||
21 | #include "ucontext_i.h" | |
22 | ||
23 | /* int __setcontext (const ucontext_t *uc); */ | |
24 | ||
25 | .text | |
26 | .align 5 | |
76e95c88 UD |
27 | ENTRY(__setcontext) |
28 | ||
29 | mov r4, r8 | |
30 | ||
31 | /* sigprocmask (SIG_SETMASK, &uc->uc_sigmask, NULL). */ | |
32 | mov r4, r5 | |
33 | add #oSIGMASK, r5 | |
34 | mov #SIG_SETMASK, r4 | |
35 | mov #0, r6 | |
36 | mov #+SYS_ify(sigprocmask), r3 | |
37 | trapa #0x13 | |
38 | mov r0, r1 | |
39 | mov #-12, r2 | |
40 | shad r2, r1 | |
41 | not r1, r1 // r1=0 means r0 = -1 to -4095 | |
42 | tst r1, r1 // i.e. error in linux | |
43 | bf .Lsetcontext_restore | |
9c84384c | 44 | .Lsyscall_error: |
76e95c88 UD |
45 | SYSCALL_ERROR_HANDLER |
46 | .Lpseudo_end: | |
47 | rts | |
48 | nop | |
49 | ||
50 | .Lsetcontext_restore: | |
51 | mov r8, r0 | |
52 | add #(oPC), r0 | |
53 | mov.l @r0+, r2 | |
54 | lds.l @r0+, pr | |
55 | ||
56 | /* Restore T frag. */ | |
57 | mov.l @r0+, r1 | |
58 | shlr r1 | |
59 | /* Skip GBR which is used for thread pointer. */ | |
60 | add #4, r0 | |
61 | ||
62 | lds.l @r0+, mach | |
63 | lds.l @r0+, macl | |
64 | ||
65 | mov r8, r0 | |
66 | add #(oR9), r0 | |
67 | mov.l @r0+, r9 | |
68 | mov.l @r0+, r10 | |
69 | mov.l @r0+, r11 | |
70 | mov.l @r0+, r12 | |
71 | mov.l @r0+, r13 | |
72 | mov.l @r0+, r14 | |
73 | mov.l @r0+, r15 | |
74 | ||
75 | mov r8, r0 | |
76 | mov.l @(oR0,r0), r1 | |
77 | mov.l r1, @-r15 | |
78 | cfi_adjust_cfa_offset(4) | |
79 | cfi_rel_offset (r1, 0) | |
80 | mov.l r2, @-r15 | |
81 | cfi_adjust_cfa_offset(4) | |
82 | cfi_rel_offset (r2, 0) | |
83 | ||
84 | mov.l @(oR1,r0), r1 | |
85 | mov.l @(oR2,r0), r2 | |
86 | mov.l @(oR3,r0), r3 | |
87 | mov.l @(oR4,r0), r4 | |
88 | mov.l @(oR5,r0), r5 | |
89 | mov.l @(oR6,r0), r6 | |
90 | mov.l @(oR7,r0), r7 | |
91 | mov.l @(oR8,r0), r8 | |
92 | mov.l @r15+, r0 | |
65a4de4e | 93 | cfi_adjust_cfa_offset(-4) |
76e95c88 UD |
94 | jmp @r0 |
95 | mov.l @r15+, r0 | |
96 | ||
76e95c88 UD |
97 | PSEUDO_END(__setcontext) |
98 | ||
99 | weak_alias (__setcontext, setcontext) |