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/* Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.
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.
The layout of the jmp_buf is as follows. This is subject to change
and user-code should never depend on the particular layout of
jmp_buf!
offset: description:
------- ------------
0x000 stack pointer (r12) ; unchangeable (see _JMPBUF_UNWINDS)
0x008 r1 (gp)
0x010 caller's unat
0x018 fpsr
0x020 r4
0x028 r5
0x030 r6
0x038 r7
0x040 rp (b0)
0x048 b1
0x050 b2
0x058 b3
0x060 b4
0x068 b5
0x070 ar.pfs
0x078 ar.lc
0x080 pr
0x088 ar.bsp ; unchangeable (see __longjmp.S)
0x090 ar.unat
0x098 &__jmp_buf ; address of the jmpbuf (needed to locate NaT bits in unat)
0x0a0 f2
0x0b0 f3
0x0c0 f4
0x0d0 f5
0x0e0 f16
0x0f0 f17
0x100 f18
0x110 f19
0x120 f20
0x130 f21
0x130 f22
0x140 f23
0x150 f24
0x160 f25
0x170 f26
0x180 f27
0x190 f28
0x1a0 f29
0x1b0 f30
0x1c0 f31 */
#include <sysdep.h>
#include <features.h>
/* The following two entry points are the traditional entry points: */
LEAF(setjmp)
alloc r8=ar.pfs,2,0,0,0
mov in1=1
br.cond.sptk.many __sigsetjmp
END(setjmp)
LEAF(_setjmp)
alloc r8=ar.pfs,2,0,0,0
mov in1=0
br.cond.sptk.many __sigsetjmp
END(_setjmp)
/* __sigsetjmp(__jmp_buf buf, int savemask) */
ENTRY(__sigsetjmp)
.prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(2)
alloc loc1=ar.pfs,2,2,2,0
mov r16=ar.unat
;;
mov r17=ar.fpsr
mov r2=in0
add r3=8,in0
;;
st8.spill.nta [r2]=sp,16 // r12 (sp)
st8.spill.nta [r3]=gp,16 // r1 (gp)
;;
st8.nta [r2]=r16,16 // save caller's unat
st8.nta [r3]=r17,16 // save fpsr
add r8=0xa0,in0
;;
st8.spill.nta [r2]=r4,16 // r4
st8.spill.nta [r3]=r5,16 // r5
add r9=0xb0,in0
;;
stf.spill.nta [r8]=f2,32
stf.spill.nta [r9]=f3,32
mov loc0=rp
.body
;;
stf.spill.nta [r8]=f4,32
stf.spill.nta [r9]=f5,32
mov r17=b1
;;
stf.spill.nta [r8]=f16,32
stf.spill.nta [r9]=f17,32
mov r18=b2
;;
stf.spill.nta [r8]=f18,32
stf.spill.nta [r9]=f19,32
mov r19=b3
;;
stf.spill.nta [r8]=f20,32
stf.spill.nta [r9]=f21,32
mov r20=b4
;;
stf.spill.nta [r8]=f22,32
stf.spill.nta [r9]=f23,32
mov r21=b5
;;
stf.spill.nta [r8]=f24,32
stf.spill.nta [r9]=f25,32
mov r22=ar.lc
;;
stf.spill.nta [r8]=f26,32
stf.spill.nta [r9]=f27,32
mov r24=pr
;;
stf.spill.nta [r8]=f28,32
stf.spill.nta [r9]=f29,32
;;
stf.spill.nta [r8]=f30
stf.spill.nta [r9]=f31
st8.spill.nta [r2]=r6,16 // r6
st8.spill.nta [r3]=r7,16 // r7
;;
mov r23=ar.bsp
mov r25=ar.unat
mov out0=in0
st8.nta [r2]=loc0,16 // b0
st8.nta [r3]=r17,16 // b1
mov out1=in1
;;
st8.nta [r2]=r18,16 // b2
st8.nta [r3]=r19,16 // b3
;;
st8.nta [r2]=r20,16 // b4
st8.nta [r3]=r21,16 // b5
;;
st8.nta [r2]=loc1,16 // ar.pfs
st8.nta [r3]=r22,16 // ar.lc
;;
st8.nta [r2]=r24,16 // pr
st8.nta [r3]=r23,16 // ar.bsp
;;
st8.nta [r2]=r25 // ar.unat
st8.nta [r3]=in0 // &__jmp_buf
br.call.dpnt.few rp=__sigjmp_save
.ret0: // force a new bundle ::q
mov r8=0
mov rp=loc0
mov ar.pfs=loc1
ret
END(__sigsetjmp)
weak_extern(_setjmp)
weak_extern(setjmp)
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