| xf.li | bfc6e71 | 2025-02-07 01:54:34 -0800 | [diff] [blame^] | 1 | /* Copyright (C) 1996-2016 Free Software Foundation, Inc. |
| 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 |
| 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, see |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <setjmp.h> |
| 20 | |
| 21 | /* This function is only called via the assembly language routine |
| 22 | __sigsetjmp, which arranges to pass in the stack pointer and the frame |
| 23 | pointer. We do things this way because it's difficult to reliably |
| 24 | access them in C. */ |
| 25 | |
| 26 | int __attribute__ ((nomips16)) |
| 27 | __sigsetjmp_aux (jmp_buf env, int savemask, int sp, int fp) |
| 28 | { |
| 29 | #ifdef __mips_hard_float |
| 30 | /* Store the floating point callee-saved registers... */ |
| 31 | asm volatile ("s.d $f20, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[0])); |
| 32 | asm volatile ("s.d $f22, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[1])); |
| 33 | asm volatile ("s.d $f24, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[2])); |
| 34 | asm volatile ("s.d $f26, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[3])); |
| 35 | asm volatile ("s.d $f28, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[4])); |
| 36 | asm volatile ("s.d $f30, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[5])); |
| 37 | #endif |
| 38 | |
| 39 | /* .. and the PC; */ |
| 40 | asm volatile ("sw $31, %0" : : "m" (env[0].__jmpbuf[0].__pc)); |
| 41 | |
| 42 | /* .. and the stack pointer; */ |
| 43 | env[0].__jmpbuf[0].__sp = (void *) sp; |
| 44 | |
| 45 | /* .. and the FP; it'll be in s8. */ |
| 46 | env[0].__jmpbuf[0].__fp = (void *) fp; |
| 47 | |
| 48 | /* .. and the GP; */ |
| 49 | asm volatile ("sw $gp, %0" : : "m" (env[0].__jmpbuf[0].__gp)); |
| 50 | |
| 51 | /* .. and the callee-saved registers; */ |
| 52 | asm volatile ("sw $16, %0" : : "m" (env[0].__jmpbuf[0].__regs[0])); |
| 53 | asm volatile ("sw $17, %0" : : "m" (env[0].__jmpbuf[0].__regs[1])); |
| 54 | asm volatile ("sw $18, %0" : : "m" (env[0].__jmpbuf[0].__regs[2])); |
| 55 | asm volatile ("sw $19, %0" : : "m" (env[0].__jmpbuf[0].__regs[3])); |
| 56 | asm volatile ("sw $20, %0" : : "m" (env[0].__jmpbuf[0].__regs[4])); |
| 57 | asm volatile ("sw $21, %0" : : "m" (env[0].__jmpbuf[0].__regs[5])); |
| 58 | asm volatile ("sw $22, %0" : : "m" (env[0].__jmpbuf[0].__regs[6])); |
| 59 | asm volatile ("sw $23, %0" : : "m" (env[0].__jmpbuf[0].__regs[7])); |
| 60 | |
| 61 | /* Save the signal mask if requested. */ |
| 62 | return __sigjmp_save (env, savemask); |
| 63 | } |