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04277e02 | 1 | /* Copyright (C) 1996-2019 Free Software Foundation, Inc. |
0134d025 | 2 | This file is part of the GNU C Library. |
d14810a6 | 3 | Contributed by Brendan Kehoe (brendan@zen.org). |
92a3358c | 4 | |
0134d025 | 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. | |
92a3358c | 9 | |
0134d025 UD |
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. |
92a3358c | 14 | |
3214b89b | 15 | You should have received a copy of the GNU Lesser General Public |
ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
92a3358c | 18 | |
92a3358c BK |
19 | #include <setjmp.h> |
20 | ||
21 | /* This function is only called via the assembly language routine | |
0df328ab | 22 | __sigsetjmp, which arranges to pass in the stack pointer and the frame |
92a3358c BK |
23 | pointer. We do things this way because it's difficult to reliably |
24 | access them in C. */ | |
25 | ||
c85c564d ST |
26 | /* Stack protection is disabled to avoid changing s0 (or any other |
27 | caller-save register) before storing it to environment. | |
28 | See BZ #22624. */ | |
29 | ||
43301bd3 | 30 | int __attribute__ ((nomips16)) |
c85c564d | 31 | inhibit_stack_protector |
75ab5314 | 32 | __sigsetjmp_aux (jmp_buf env, int savemask, int sp, int fp) |
92a3358c | 33 | { |
6b4d184d | 34 | #ifdef __mips_hard_float |
92a3358c | 35 | /* Store the floating point callee-saved registers... */ |
a4b64774 RM |
36 | asm volatile ("s.d $f20, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[0])); |
37 | asm volatile ("s.d $f22, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[1])); | |
38 | asm volatile ("s.d $f24, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[2])); | |
39 | asm volatile ("s.d $f26, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[3])); | |
40 | asm volatile ("s.d $f28, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[4])); | |
41 | asm volatile ("s.d $f30, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[5])); | |
6b4d184d | 42 | #endif |
92a3358c BK |
43 | |
44 | /* .. and the PC; */ | |
19ca28fb | 45 | asm volatile ("sw $31, %0" : : "m" (env[0].__jmpbuf[0].__pc)); |
92a3358c BK |
46 | |
47 | /* .. and the stack pointer; */ | |
500d200d | 48 | env[0].__jmpbuf[0].__sp = (void *) sp; |
92a3358c BK |
49 | |
50 | /* .. and the FP; it'll be in s8. */ | |
500d200d | 51 | env[0].__jmpbuf[0].__fp = (void *) fp; |
92a3358c BK |
52 | |
53 | /* .. and the GP; */ | |
19ca28fb | 54 | asm volatile ("sw $gp, %0" : : "m" (env[0].__jmpbuf[0].__gp)); |
92a3358c BK |
55 | |
56 | /* .. and the callee-saved registers; */ | |
19ca28fb AO |
57 | asm volatile ("sw $16, %0" : : "m" (env[0].__jmpbuf[0].__regs[0])); |
58 | asm volatile ("sw $17, %0" : : "m" (env[0].__jmpbuf[0].__regs[1])); | |
59 | asm volatile ("sw $18, %0" : : "m" (env[0].__jmpbuf[0].__regs[2])); | |
60 | asm volatile ("sw $19, %0" : : "m" (env[0].__jmpbuf[0].__regs[3])); | |
61 | asm volatile ("sw $20, %0" : : "m" (env[0].__jmpbuf[0].__regs[4])); | |
62 | asm volatile ("sw $21, %0" : : "m" (env[0].__jmpbuf[0].__regs[5])); | |
63 | asm volatile ("sw $22, %0" : : "m" (env[0].__jmpbuf[0].__regs[6])); | |
64 | asm volatile ("sw $23, %0" : : "m" (env[0].__jmpbuf[0].__regs[7])); | |
92a3358c | 65 | |
75ab5314 | 66 | /* Save the signal mask if requested. */ |
a4b64774 | 67 | return __sigjmp_save (env, savemask); |
92a3358c | 68 | } |