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- /* 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_ABI32
- __asm__ __volatile__ ("ld $29, %0\n\t"
- "ld $30, %1\n\t" : : "m" (env[0].__sp), "m" (env[0].__fp));
- #else /* O32 */
- __asm__ __volatile__ ("lw $29, %0\n\t"
- "lw $30, %1\n\t" : : "m" (env[0].__sp), "m" (env[0].__fp));
- #endif /* O32 */
- /* 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)
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