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/* Copyright (C) 1996, 1997, 2000, 2002, 2003 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <setjmp.h>
#include <sys/asm.h>
#define STRINGXP(X) __STRING(X)
#define REGS STRINGXP(REG_S)
#define PTRS STRINGXP(PTR_S)
/* 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. */
int
__sigsetjmp_aux (jmp_buf env, int savemask, int sp, int fp)
{
/* Store the floating point callee-saved registers... */
#if _MIPS_SIM == _MIPS_SIM_ABI32
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]));
#else
asm volatile ("s.d $f24, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[0]));
asm volatile ("s.d $f25, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[1]));
asm volatile ("s.d $f26, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[2]));
asm volatile ("s.d $f27, %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 $f29, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[5]));
asm volatile ("s.d $f30, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[6]));
asm volatile ("s.d $f31, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[7]));
#endif
/* .. and the PC; */
asm volatile (PTRS " $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 (PTRS " $gp, %0" : : "m" (env[0].__jmpbuf[0].__gp));
/* .. and the callee-saved registers; */
asm volatile (REGS " $16, %0" : : "m" (env[0].__jmpbuf[0].__regs[0]));
asm volatile (REGS " $17, %0" : : "m" (env[0].__jmpbuf[0].__regs[1]));
asm volatile (REGS " $18, %0" : : "m" (env[0].__jmpbuf[0].__regs[2]));
asm volatile (REGS " $19, %0" : : "m" (env[0].__jmpbuf[0].__regs[3]));
asm volatile (REGS " $20, %0" : : "m" (env[0].__jmpbuf[0].__regs[4]));
asm volatile (REGS " $21, %0" : : "m" (env[0].__jmpbuf[0].__regs[5]));
asm volatile (REGS " $22, %0" : : "m" (env[0].__jmpbuf[0].__regs[6]));
asm volatile (REGS " $23, %0" : : "m" (env[0].__jmpbuf[0].__regs[7]));
/* .. and finally get and reconstruct the floating point csr. */
asm ("cfc1 %0, $31" : "=r" (env[0].__jmpbuf[0].__fpc_csr));
/* Save the signal mask if requested. */
return __sigjmp_save (env, savemask);
}
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