| /* Copyright (C) 1992-2018 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> |
| #include <stdlib.h> |
| |
| #ifndef __GNUC__ |
| #error This file uses GNU C extensions; you must compile with GCC. |
| #endif |
| |
| static void __attribute__ ((nomips16)) |
| ____longjmp (__jmp_buf env_arg, int val_arg) |
| { |
| /* gcc 1.39.19 miscompiled the longjmp routine (as it did setjmp before |
| the hack around it); force it to use $a1 for the longjmp value. |
| Without this it saves $a1 in a register which gets clobbered |
| along the way. */ |
| register struct __jmp_buf_internal_tag *env asm ("a0"); |
| register int val asm ("a1"); |
| #ifdef CHECK_SP |
| register long sp asm ("$29"); |
| CHECK_SP (env[0].__sp, sp, long); |
| #endif |
| |
| #ifdef __mips_hard_float |
| /* Pull back the floating point callee-saved registers. */ |
| asm volatile ("l.d $f20, %0" : : "m" (env[0].__fpregs[0])); |
| asm volatile ("l.d $f22, %0" : : "m" (env[0].__fpregs[1])); |
| asm volatile ("l.d $f24, %0" : : "m" (env[0].__fpregs[2])); |
| asm volatile ("l.d $f26, %0" : : "m" (env[0].__fpregs[3])); |
| asm volatile ("l.d $f28, %0" : : "m" (env[0].__fpregs[4])); |
| asm volatile ("l.d $f30, %0" : : "m" (env[0].__fpregs[5])); |
| #endif |
| |
| /* Get the GP. */ |
| asm volatile ("lw $gp, %0" : : "m" (env[0].__gp)); |
| |
| /* Get the callee-saved registers. */ |
| asm volatile ("lw $16, %0" : : "m" (env[0].__regs[0])); |
| asm volatile ("lw $17, %0" : : "m" (env[0].__regs[1])); |
| asm volatile ("lw $18, %0" : : "m" (env[0].__regs[2])); |
| asm volatile ("lw $19, %0" : : "m" (env[0].__regs[3])); |
| asm volatile ("lw $20, %0" : : "m" (env[0].__regs[4])); |
| asm volatile ("lw $21, %0" : : "m" (env[0].__regs[5])); |
| asm volatile ("lw $22, %0" : : "m" (env[0].__regs[6])); |
| asm volatile ("lw $23, %0" : : "m" (env[0].__regs[7])); |
| |
| /* Get the PC. */ |
| asm volatile ("lw $25, %0" : : "m" (env[0].__pc)); |
| |
| /* Restore the stack pointer and the FP. They have to be restored |
| last and in a single asm as gcc, depending on options used, may |
| use either of them to access env. */ |
| asm volatile ("lw $29, %0\n\t" |
| "lw $30, %1\n\t" : : "m" (env[0].__sp), "m" (env[0].__fp)); |
| |
| /* Give setjmp 1 if given a 0, or what they gave us if non-zero. */ |
| if (val == 0) |
| asm volatile ("li $2, 1"); |
| else |
| asm volatile ("move $2, %0" : : "r" (val)); |
| |
| asm volatile ("jr $25"); |
| |
| /* Avoid `volatile function does return' warnings. */ |
| for (;;); |
| } |
| |
| strong_alias (____longjmp, __longjmp); |