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d614a753 | 1 | /* Copyright (C) 1996-2020 Free Software Foundation, Inc. |
d0c2d3b3 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Brendan Kehoe (brendan@zen.org). | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
3214b89b AJ |
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. | |
d0c2d3b3 UD |
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 | |
3214b89b | 13 | Lesser General Public License for more details. |
d0c2d3b3 | 14 | |
3214b89b | 15 | You should have received a copy of the GNU Lesser General Public |
ab84e3ff | 16 | License along with the GNU C Library. If not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
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18 | |
19 | #include <setjmp.h> | |
b8ddf7a1 | 20 | #include <sgidefs.h> |
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21 | |
22 | /* This function is only called via the assembly language routine | |
23 | __sigsetjmp, which arranges to pass in the stack pointer and the frame | |
24 | pointer. We do things this way because it's difficult to reliably | |
25 | access them in C. */ | |
26 | ||
368b6c8d ST |
27 | /* Stack protection is disabled to avoid changing s0 (or any other |
28 | caller-save register) before storing it to environment. | |
29 | See BZ #22624. */ | |
30 | ||
d0c2d3b3 | 31 | int |
368b6c8d | 32 | inhibit_stack_protector |
19ca28fb AO |
33 | __sigsetjmp_aux (jmp_buf env, int savemask, long long sp, long long fp, |
34 | long long gp) | |
d0c2d3b3 | 35 | { |
6b4d184d | 36 | #ifdef __mips_hard_float |
d0c2d3b3 | 37 | /* Store the floating point callee-saved registers... */ |
b8ddf7a1 | 38 | #if _MIPS_SIM == _ABI64 |
d0c2d3b3 UD |
39 | asm volatile ("s.d $f24, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[0])); |
40 | asm volatile ("s.d $f25, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[1])); | |
41 | asm volatile ("s.d $f26, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[2])); | |
42 | asm volatile ("s.d $f27, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[3])); | |
43 | asm volatile ("s.d $f28, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[4])); | |
44 | asm volatile ("s.d $f29, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[5])); | |
45 | asm volatile ("s.d $f30, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[6])); | |
46 | asm volatile ("s.d $f31, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[7])); | |
a5b668cc AO |
47 | #else |
48 | asm volatile ("s.d $f20, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[0])); | |
49 | asm volatile ("s.d $f22, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[1])); | |
50 | asm volatile ("s.d $f24, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[2])); | |
51 | asm volatile ("s.d $f26, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[3])); | |
52 | asm volatile ("s.d $f28, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[4])); | |
53 | asm volatile ("s.d $f30, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[5])); | |
6b4d184d | 54 | #endif |
a5b668cc | 55 | #endif |
d0c2d3b3 UD |
56 | |
57 | /* .. and the PC; */ | |
58 | asm volatile ("sd $31, %0" : : "m" (env[0].__jmpbuf[0].__pc)); | |
59 | ||
60 | /* .. and the stack pointer; */ | |
61 | env[0].__jmpbuf[0].__sp = sp; | |
62 | ||
63 | /* .. and the FP; it'll be in s8. */ | |
64 | env[0].__jmpbuf[0].__fp = fp; | |
65 | ||
66 | /* .. and the GP; */ | |
19ca28fb | 67 | env[0].__jmpbuf[0].__gp = gp; |
d0c2d3b3 UD |
68 | |
69 | /* .. and the callee-saved registers; */ | |
70 | asm volatile ("sd $16, %0" : : "m" (env[0].__jmpbuf[0].__regs[0])); | |
71 | asm volatile ("sd $17, %0" : : "m" (env[0].__jmpbuf[0].__regs[1])); | |
72 | asm volatile ("sd $18, %0" : : "m" (env[0].__jmpbuf[0].__regs[2])); | |
73 | asm volatile ("sd $19, %0" : : "m" (env[0].__jmpbuf[0].__regs[3])); | |
74 | asm volatile ("sd $20, %0" : : "m" (env[0].__jmpbuf[0].__regs[4])); | |
75 | asm volatile ("sd $21, %0" : : "m" (env[0].__jmpbuf[0].__regs[5])); | |
76 | asm volatile ("sd $22, %0" : : "m" (env[0].__jmpbuf[0].__regs[6])); | |
77 | asm volatile ("sd $23, %0" : : "m" (env[0].__jmpbuf[0].__regs[7])); | |
78 | ||
d0c2d3b3 UD |
79 | /* Save the signal mask if requested. */ |
80 | return __sigjmp_save (env, savemask); | |
81 | } |