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/* $OpenBSD: _setjmp.S,v 1.4 2005/08/07 16:40:15 espie Exp $ */
/*
* Copyright (c) 2002 Opsycon AB (www.opsycon.se / www.opsycon.com)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Opsycon AB nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <machine/asm.h>
#include <machine/regnum.h>
#include <machine/signal.h>
/*
* _setjmp, _longjmp (not restoring signal state)
*
* XXX FPSET should probably be taken from SR setting. hmmm...
* GPOFF and FRAMESIZE must be the same for both _setjmp and _longjmp!
*
*/
FRAMESZ= MKFSIZ(0,4)
GPOFF= FRAMESZ-2*REGSZ
#define FPREG64_S(FPR, OFF, BASE) \
swc1 FPR, OFF(BASE) ; \
mfhc1 t0, FPR ; \
sw t0, OFF+4(BASE) ;
#define FPREG64_L(FPR, OFF, BASE) \
lw t0, OFF+4(BASE) ; \
lw t1, OFF(BASE) ; \
mtc1 t1, FPR ; \
mthc1 t0, FPR ; \
LEAF(_setjmp, FRAMESZ)
PTR_SUBU sp, FRAMESZ
SETUP_GP64(GPOFF, _setjmp)
SAVE_GP(GPOFF)
.set noreorder
#if defined(__mips64)
dli v0, 0xACEDBADE # sigcontext magic number
#else
li v0, 0xACEDBADE # sigcontext magic number
#endif
REG_S v0, SC_REGS+ZERO*REGSZ(a0)
REG_S s0, SC_REGS+S0*REGSZ(a0)
REG_S s1, SC_REGS+S1*REGSZ(a0)
REG_S s2, SC_REGS+S2*REGSZ(a0)
REG_S s3, SC_REGS+S3*REGSZ(a0)
REG_S s4, SC_REGS+S4*REGSZ(a0)
REG_S s5, SC_REGS+S5*REGSZ(a0)
REG_S s6, SC_REGS+S6*REGSZ(a0)
REG_S s7, SC_REGS+S7*REGSZ(a0)
REG_S s8, SC_REGS+S8*REGSZ(a0)
REG_L v0, GPOFF(sp)
REG_S v0, SC_REGS+GP*REGSZ(a0)
PTR_ADDU v0, sp, FRAMESZ
REG_S v0, SC_REGS+SP*REGSZ(a0)
REG_S ra, SC_PC(a0)
#if !defined(SOFTFLOAT)
li v0, 1 # be nice if we could tell
REG_S v0, SC_FPUSED(a0) # sc_fpused = 1
cfc1 v0, $31
#if _MIPS_FPSET == 32
FPREG64_S($f20, SC_FPREGS+((F20-F0)*REGSZ_FP), a0)
FPREG64_S($f21, SC_FPREGS+((F21-F0)*REGSZ_FP), a0)
FPREG64_S($f22, SC_FPREGS+((F22-F0)*REGSZ_FP), a0)
FPREG64_S($f23, SC_FPREGS+((F23-F0)*REGSZ_FP), a0)
FPREG64_S($f24, SC_FPREGS+((F24-F0)*REGSZ_FP), a0)
FPREG64_S($f25, SC_FPREGS+((F25-F0)*REGSZ_FP), a0)
FPREG64_S($f26, SC_FPREGS+((F26-F0)*REGSZ_FP), a0)
FPREG64_S($f27, SC_FPREGS+((F27-F0)*REGSZ_FP), a0)
FPREG64_S($f28, SC_FPREGS+((F28-F0)*REGSZ_FP), a0)
FPREG64_S($f29, SC_FPREGS+((F29-F0)*REGSZ_FP), a0)
FPREG64_S($f30, SC_FPREGS+((F30-F0)*REGSZ_FP), a0)
FPREG64_S($f31, SC_FPREGS+((F31-F0)*REGSZ_FP), a0)
#else
swc1 $f20, SC_FPREGS+((F20-F0)*REGSZ_FP)(a0)
swc1 $f21, SC_FPREGS+((F21-F0)*REGSZ_FP)(a0)
swc1 $f22, SC_FPREGS+((F22-F0)*REGSZ_FP)(a0)
swc1 $f23, SC_FPREGS+((F23-F0)*REGSZ_FP)(a0)
swc1 $f24, SC_FPREGS+((F24-F0)*REGSZ_FP)(a0)
swc1 $f25, SC_FPREGS+((F25-F0)*REGSZ_FP)(a0)
swc1 $f26, SC_FPREGS+((F26-F0)*REGSZ_FP)(a0)
swc1 $f27, SC_FPREGS+((F27-F0)*REGSZ_FP)(a0)
swc1 $f28, SC_FPREGS+((F28-F0)*REGSZ_FP)(a0)
swc1 $f29, SC_FPREGS+((F29-F0)*REGSZ_FP)(a0)
swc1 $f30, SC_FPREGS+((F30-F0)*REGSZ_FP)(a0)
swc1 $f31, SC_FPREGS+((F31-F0)*REGSZ_FP)(a0)
#endif
REG_S v0, SC_FPREGS+((FSR-F0)*REGSZ)(a0)
#endif /* !SOFTFLOAT */
RESTORE_GP64
PTR_ADDU sp, FRAMESZ
j ra
move v0, zero
END(_setjmp)
LEAF(_longjmp, FRAMESZ)
PTR_SUBU sp, FRAMESZ
SETUP_GP64(GPOFF, _longjmp)
SAVE_GP(GPOFF)
.set noreorder
REG_L v0, SC_REGS+ZERO*REGSZ(a0)
bne v0, 0xACEDBADE, botch # jump if error
REG_L ra, SC_PC(a0)
REG_L v0, SC_FPREGS+((FSR-F0)*REGSZ)(a0)
REG_L s0, SC_REGS+S0*REGSZ(a0)
REG_L s1, SC_REGS+S1*REGSZ(a0)
REG_L s2, SC_REGS+S2*REGSZ(a0)
REG_L s3, SC_REGS+S3*REGSZ(a0)
REG_L s4, SC_REGS+S4*REGSZ(a0)
REG_L s5, SC_REGS+S5*REGSZ(a0)
REG_L s6, SC_REGS+S6*REGSZ(a0)
REG_L s7, SC_REGS+S7*REGSZ(a0)
REG_L s8, SC_REGS+S8*REGSZ(a0)
REG_L gp, SC_REGS+GP*REGSZ(a0)
REG_L sp, SC_REGS+SP*REGSZ(a0)
#if !defined(SOFTFLOAT)
ctc1 v0, $31
#if _MIPS_FPSET == 32
FPREG64_L($f20, SC_FPREGS+((F20-F0)*REGSZ_FP), a0)
FPREG64_L($f21, SC_FPREGS+((F21-F0)*REGSZ_FP), a0)
FPREG64_L($f22, SC_FPREGS+((F22-F0)*REGSZ_FP), a0)
FPREG64_L($f23, SC_FPREGS+((F23-F0)*REGSZ_FP), a0)
FPREG64_L($f24, SC_FPREGS+((F24-F0)*REGSZ_FP), a0)
FPREG64_L($f25, SC_FPREGS+((F25-F0)*REGSZ_FP), a0)
FPREG64_L($f26, SC_FPREGS+((F26-F0)*REGSZ_FP), a0)
FPREG64_L($f27, SC_FPREGS+((F27-F0)*REGSZ_FP), a0)
FPREG64_L($f28, SC_FPREGS+((F28-F0)*REGSZ_FP), a0)
FPREG64_L($f29, SC_FPREGS+((F29-F0)*REGSZ_FP), a0)
FPREG64_L($f30, SC_FPREGS+((F30-F0)*REGSZ_FP), a0)
FPREG64_L($f31, SC_FPREGS+((F31-F0)*REGSZ_FP), a0)
#else
lwc1 $f20, SC_FPREGS+((F20-F0)*REGSZ_FP)(a0)
lwc1 $f21, SC_FPREGS+((F21-F0)*REGSZ_FP)(a0)
lwc1 $f22, SC_FPREGS+((F22-F0)*REGSZ_FP)(a0)
lwc1 $f23, SC_FPREGS+((F23-F0)*REGSZ_FP)(a0)
lwc1 $f24, SC_FPREGS+((F24-F0)*REGSZ_FP)(a0)
lwc1 $f25, SC_FPREGS+((F25-F0)*REGSZ_FP)(a0)
lwc1 $f26, SC_FPREGS+((F26-F0)*REGSZ_FP)(a0)
lwc1 $f27, SC_FPREGS+((F27-F0)*REGSZ_FP)(a0)
lwc1 $f28, SC_FPREGS+((F28-F0)*REGSZ_FP)(a0)
lwc1 $f29, SC_FPREGS+((F29-F0)*REGSZ_FP)(a0)
lwc1 $f30, SC_FPREGS+((F30-F0)*REGSZ_FP)(a0)
lwc1 $f31, SC_FPREGS+((F31-F0)*REGSZ_FP)(a0)
#endif
#endif /* !SOFTFLOAT */
bne a1, zero, 1f
nop
li a1, 1 # never return 0!
1:
j ra
move v0, a1
botch:
jal longjmperror
nop
jal abort
nop
RESTORE_GP64
PTR_ADDU sp, FRAMESZ
END(_longjmp)
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