diff options
Diffstat (limited to 'sysdeps/mips/mips64/__longjmp.c')
| -rw-r--r-- | sysdeps/mips/mips64/__longjmp.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/sysdeps/mips/mips64/__longjmp.c b/sysdeps/mips/mips64/__longjmp.c new file mode 100644 index 0000000000..551daa4895 --- /dev/null +++ b/sysdeps/mips/mips64/__longjmp.c @@ -0,0 +1,85 @@ +/* Copyright (C) 1992, 1995, 1997 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <setjmp.h> +#include <stdlib.h> + +#undef __longjmp + +#ifndef __GNUC__ + #error This file uses GNU C extensions; you must compile with GCC. +#endif + +void +__longjmp (env, val_arg) + __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. */ + 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])); + + /* Restore the stack pointer. */ + asm volatile ("ld $29, %0" : : "m" (env[0].__sp)); + + /* Get and reconstruct the floating point csr. */ + asm volatile ("lw $2, %0" : : "m" (env[0].__fpc_csr)); + asm volatile ("ctc1 $2, $31"); + + /* Get the FP. */ + asm volatile ("ld $30, %0" : : "m" (env[0].__fp)); + + /* Get the GP. */ + asm volatile ("ld $gp, %0" : : "m" (env[0].__gp)); + + /* Get the callee-saved registers. */ + 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])); + + /* Get the PC. */ + asm volatile ("ld $31, %0" : : "m" (env[0].__pc)); + + /* Give setjmp 1 if given a 0, or what they gave us if non-zero. */ + if (val == 0) + asm volatile ("dli $2, 1"); + else + asm volatile ("move $2, %0" : : "r" (val)); + + asm volatile ("j $31"); + + abort (); +} |