/* Copyright (C) 1992, 1995, 1997, 2000 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 <features.h> #include <setjmp.h> #include <stdlib.h> #include <sgidefs.h> #ifndef __GNUC__ #error This file uses GNU C extensions; you must compile with GCC. #endif extern void __longjmp (__jmp_buf __env, int __val) attribute_noreturn; libc_hidden_proto(__longjmp) void __longjmp (__jmp_buf env, 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 int val __asm__ ("a1"); /* Pull back the floating point callee-saved registers. */ #if defined __UCLIBC_HAS_FLOATS__ && ! defined __UCLIBC_HAS_SOFT_FLOAT__ #if _MIPS_SIM == _MIPS_SIM_ABI64 __asm__ __volatile__ ("l.d $f24, %0" : : "m" (env[0].__fpregs[0])); __asm__ __volatile__ ("l.d $f25, %0" : : "m" (env[0].__fpregs[1])); __asm__ __volatile__ ("l.d $f26, %0" : : "m" (env[0].__fpregs[2])); __asm__ __volatile__ ("l.d $f27, %0" : : "m" (env[0].__fpregs[3])); __asm__ __volatile__ ("l.d $f28, %0" : : "m" (env[0].__fpregs[4])); __asm__ __volatile__ ("l.d $f29, %0" : : "m" (env[0].__fpregs[5])); __asm__ __volatile__ ("l.d $f30, %0" : : "m" (env[0].__fpregs[6])); __asm__ __volatile__ ("l.d $f31, %0" : : "m" (env[0].__fpregs[7])); #else /* O32 || N32 */ __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 /* O32 || N32 */ /* Get and reconstruct the floating point csr. */ __asm__ __volatile__ ("lw $2, %0" : : "m" (env[0].__fpc_csr)); __asm__ __volatile__ ("ctc1 $2, $31"); #endif /* Get the GP. */ #if _MIPS_SIM == _MIPS_SIM_ABI64 __asm__ __volatile__ ("ld $gp, %0" : : "m" (env[0].__gp)); #else /* O32 || N32 */ __asm__ __volatile__ ("lw $gp, %0" : : "m" (env[0].__gp)); #endif /* O32 || N32 */ /* Get the callee-saved registers. */ #if _MIPS_SIM == _MIPS_SIM_ABI32 __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])); #else /* N32 || N64 */ __asm__ __volatile__ ("ld $16, %0" : : "m" (env[0].__regs[0])); __asm__ __volatile__ ("ld $17, %0" : : "m" (env[0].__regs[1])); __asm__ __volatile__ ("ld $18, %0" : : "m" (env[0].__regs[2])); __asm__ __volatile__ ("ld $19, %0" : : "m" (env[0].__regs[3])); __asm__ __volatile__ ("ld $20, %0" : : "m" (env[0].__regs[4])); __asm__ __volatile__ ("ld $21, %0" : : "m" (env[0].__regs[5])); __asm__ __volatile__ ("ld $22, %0" : : "m" (env[0].__regs[6])); __asm__ __volatile__ ("ld $23, %0" : : "m" (env[0].__regs[7])); #endif /* N32 || N64 */ /* Get the PC. */ #if _MIPS_SIM == _MIPS_SIM_ABI32 __asm__ __volatile__ ("lw $25, %0" : : "m" (env[0].__pc)); #elif _MIPS_SIM == _MIPS_SIM_NABI32 __asm__ __volatile__ ("lw $31, %0" : : "m" (env[0].__pc)); #else /* N64 */ __asm__ __volatile__ ("ld $31, %0" : : "m" (env[0].__pc)); #endif /* N64 */ /* 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. */ #if _MIPS_SIM == _MIPS_SIM_ABI64 __asm__ __volatile__ ("ld $29, %0\n\t" "ld $30, %1\n\t" : : "m" (env[0].__sp), "m" (env[0].__fp)); #else /* O32 || N32 */ __asm__ __volatile__ ("lw $29, %0\n\t" "lw $30, %1\n\t" : : "m" (env[0].__sp), "m" (env[0].__fp)); #endif /* O32 || N32 */ /* 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)); #if _MIPS_SIM == _MIPS_SIM_ABI32 __asm__ __volatile__ ("jr $25"); #else /* N32 || N64 */ __asm__ __volatile__ ("jr $31"); #endif /* N32 || N64 */ /* Avoid `volatile function does return' warnings. */ for (;;); } libc_hidden_def(__longjmp)