| /* Copyright (C) 1996-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Brendan Kehoe (brendan@zen.org). |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <setjmp.h> |
| |
| /* This function is only called via the assembly language routine |
| __sigsetjmp, which arranges to pass in the stack pointer and the frame |
| pointer. We do things this way because it's difficult to reliably |
| access them in C. */ |
| |
| /* Stack protection is disabled to avoid changing s0 (or any other |
| caller-save register) before storing it to environment. |
| See BZ #22624. */ |
| |
| int __attribute__ ((nomips16)) |
| inhibit_stack_protector |
| __sigsetjmp_aux (jmp_buf env, int savemask, int sp, int fp) |
| { |
| #ifdef __mips_hard_float |
| /* Store the floating point callee-saved registers... */ |
| asm volatile ("s.d $f20, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[0])); |
| asm volatile ("s.d $f22, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[1])); |
| asm volatile ("s.d $f24, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[2])); |
| asm volatile ("s.d $f26, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[3])); |
| asm volatile ("s.d $f28, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[4])); |
| asm volatile ("s.d $f30, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[5])); |
| #endif |
| |
| /* .. and the PC; */ |
| asm volatile ("sw $31, %0" : : "m" (env[0].__jmpbuf[0].__pc)); |
| |
| /* .. and the stack pointer; */ |
| env[0].__jmpbuf[0].__sp = (void *) sp; |
| |
| /* .. and the FP; it'll be in s8. */ |
| env[0].__jmpbuf[0].__fp = (void *) fp; |
| |
| /* .. and the GP; */ |
| asm volatile ("sw $gp, %0" : : "m" (env[0].__jmpbuf[0].__gp)); |
| |
| /* .. and the callee-saved registers; */ |
| asm volatile ("sw $16, %0" : : "m" (env[0].__jmpbuf[0].__regs[0])); |
| asm volatile ("sw $17, %0" : : "m" (env[0].__jmpbuf[0].__regs[1])); |
| asm volatile ("sw $18, %0" : : "m" (env[0].__jmpbuf[0].__regs[2])); |
| asm volatile ("sw $19, %0" : : "m" (env[0].__jmpbuf[0].__regs[3])); |
| asm volatile ("sw $20, %0" : : "m" (env[0].__jmpbuf[0].__regs[4])); |
| asm volatile ("sw $21, %0" : : "m" (env[0].__jmpbuf[0].__regs[5])); |
| asm volatile ("sw $22, %0" : : "m" (env[0].__jmpbuf[0].__regs[6])); |
| asm volatile ("sw $23, %0" : : "m" (env[0].__jmpbuf[0].__regs[7])); |
| |
| /* Save the signal mask if requested. */ |
| return __sigjmp_save (env, savemask); |
| } |