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76e95c88 UD |
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 | |
76e95c88 UD |
28 | ENTRY(__setcontext) |
29 | ||
30 | mov r4, r8 | |
31 | ||
32 | /* sigprocmask (SIG_SETMASK, &uc->uc_sigmask, NULL). */ | |
33 | mov r4, r5 | |
34 | add #(oSIGMASK/2), r5 | |
35 | add #(oSIGMASK/2), r5 | |
36 | mov #SIG_SETMASK, r4 | |
37 | mov #0, r6 | |
38 | mov #+SYS_ify(sigprocmask), r3 | |
39 | trapa #0x13 | |
40 | mov r0, r1 | |
41 | mov #-12, r2 | |
42 | shad r2, r1 | |
43 | not r1, r1 // r1=0 means r0 = -1 to -4095 | |
44 | tst r1, r1 // i.e. error in linux | |
45 | bf .Lsetcontext_restore | |
46 | .Lsyscall_error: | |
47 | SYSCALL_ERROR_HANDLER | |
48 | .Lpseudo_end: | |
49 | rts | |
50 | nop | |
51 | ||
52 | .Lsetcontext_restore: | |
53 | mov r8, r0 | |
54 | add #(oFR0),r0 | |
55 | fmov.s @r0+, fr0 | |
56 | fmov.s @r0+, fr1 | |
57 | fmov.s @r0+, fr2 | |
58 | fmov.s @r0+, fr3 | |
59 | fmov.s @r0+, fr4 | |
60 | fmov.s @r0+, fr5 | |
61 | fmov.s @r0+, fr6 | |
62 | fmov.s @r0+, fr7 | |
63 | fmov.s @r0+, fr8 | |
64 | fmov.s @r0+, fr9 | |
65 | fmov.s @r0+, fr10 | |
66 | fmov.s @r0+, fr11 | |
67 | fmov.s @r0+, fr12 | |
68 | fmov.s @r0+, fr13 | |
69 | fmov.s @r0+, fr14 | |
70 | fmov.s @r0+, fr15 | |
71 | frchg | |
72 | fmov.s @r0+, fr0 | |
73 | fmov.s @r0+, fr1 | |
74 | fmov.s @r0+, fr2 | |
75 | fmov.s @r0+, fr3 | |
76 | fmov.s @r0+, fr4 | |
77 | fmov.s @r0+, fr5 | |
78 | fmov.s @r0+, fr6 | |
79 | fmov.s @r0+, fr7 | |
80 | fmov.s @r0+, fr8 | |
81 | fmov.s @r0+, fr9 | |
82 | fmov.s @r0+, fr10 | |
83 | fmov.s @r0+, fr11 | |
84 | fmov.s @r0+, fr12 | |
85 | fmov.s @r0+, fr13 | |
86 | fmov.s @r0+, fr14 | |
87 | fmov.s @r0+, fr15 | |
88 | frchg | |
89 | lds.l @r0+, fpscr | |
90 | lds.l @r0+, fpul | |
91 | ||
92 | mov r8, r0 | |
93 | add #(oPC), r0 | |
94 | mov.l @r0+, r2 | |
95 | lds.l @r0+, pr | |
96 | ||
97 | /* Restore T frag. */ | |
98 | mov.l @r0+, r1 | |
99 | shlr r1 | |
100 | /* Skip GBR which is used for thread pointer. */ | |
101 | add #4, r0 | |
102 | ||
103 | lds.l @r0+, mach | |
104 | lds.l @r0+, macl | |
105 | ||
106 | mov r8, r0 | |
107 | add #(oR9), r0 | |
108 | mov.l @r0+, r9 | |
109 | mov.l @r0+, r10 | |
110 | mov.l @r0+, r11 | |
111 | mov.l @r0+, r12 | |
112 | mov.l @r0+, r13 | |
113 | mov.l @r0+, r14 | |
114 | mov.l @r0+, r15 | |
115 | ||
116 | mov r8, r0 | |
117 | mov.l @(oR0,r0), r1 | |
118 | mov.l r1, @-r15 | |
119 | cfi_adjust_cfa_offset(4) | |
120 | cfi_rel_offset (r1, 0) | |
121 | mov.l r2, @-r15 | |
122 | cfi_adjust_cfa_offset(4) | |
123 | cfi_rel_offset (r2, 0) | |
124 | ||
125 | mov.l @(oR1,r0), r1 | |
126 | mov.l @(oR2,r0), r2 | |
127 | mov.l @(oR3,r0), r3 | |
128 | mov.l @(oR4,r0), r4 | |
129 | mov.l @(oR5,r0), r5 | |
130 | mov.l @(oR6,r0), r6 | |
131 | mov.l @(oR7,r0), r7 | |
132 | mov.l @(oR8,r0), r8 | |
133 | mov.l @r15+, r0 | |
134 | jmp @r0 | |
135 | mov.l @r15+, r0 | |
136 | ||
76e95c88 UD |
137 | PSEUDO_END(__setcontext) |
138 | ||
139 | weak_alias (__setcontext, setcontext) |