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200 lines
4.3 KiB
ArmAsm
200 lines
4.3 KiB
ArmAsm
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/* Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005
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Free Software Foundation, Inc.
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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The layout of the jmp_buf is as follows. This is subject to change
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and user-code should never depend on the particular layout of
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jmp_buf!
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offset: description:
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------- ------------
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0x000 stack pointer (r12) ; unchangeable (see _JMPBUF_UNWINDS)
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0x008 r1 (gp)
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0x010 caller's unat
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0x018 fpsr
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0x020 r4
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0x028 r5
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0x030 r6
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0x038 r7
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0x040 rp (b0)
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0x048 b1
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0x050 b2
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0x058 b3
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0x060 b4
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0x068 b5
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0x070 ar.pfs
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0x078 ar.lc
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0x080 pr
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0x088 ar.bsp ; unchangeable (see __longjmp.S)
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0x090 ar.unat
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0x098 &__jmp_buf ; address of the jmpbuf (needed to locate NaT bits in unat)
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0x0a0 f2
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0x0b0 f3
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0x0c0 f4
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0x0d0 f5
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0x0e0 f16
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0x0f0 f17
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0x100 f18
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0x110 f19
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0x120 f20
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0x130 f21
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0x130 f22
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0x140 f23
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0x150 f24
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0x160 f25
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0x170 f26
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0x180 f27
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0x190 f28
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0x1a0 f29
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0x1b0 f30
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0x1c0 f31 */
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#include <sysdep.h>
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#include <features.h>
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/* The following two entry points are the traditional entry points: */
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LEAF(setjmp)
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alloc r8=ar.pfs,2,0,0,0
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mov in1=1
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br.cond.sptk.many _GI___sigsetjmp
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END(setjmp)
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LEAF(_setjmp)
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alloc r8=ar.pfs,2,0,0,0
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mov in1=0
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br.cond.sptk.many _GI___sigsetjmp
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END(_setjmp)
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libc_hidden_def (_setjmp)
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/* __sigsetjmp(__jmp_buf buf, int savemask) */
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ENTRY(__sigsetjmp)
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.prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(2)
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alloc loc1=ar.pfs,2,5,2,0
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.save ar.unat, loc2
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mov loc2=ar.unat
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;;
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mov r17=ar.fpsr
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mov r2=in0
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add r3=8,in0
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;;
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.mem.offset 8,0; st8.spill.nta [r2]=sp,16 // r12 (sp)
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.mem.offset 0,0; st8.spill.nta [r3]=gp,16 // r1 (gp)
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;;
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st8.nta [r2]=loc2,16 // save caller's unat
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st8.nta [r3]=r17,16 // save fpsr
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add r8=0xa0,in0
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;;
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.mem.offset 8,0; st8.spill.nta [r2]=r4,16 // r4
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.mem.offset 0,0; st8.spill.nta [r3]=r5,16 // r5
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add r9=0xb0,in0
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;;
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stf.spill.nta [r8]=f2,32
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stf.spill.nta [r9]=f3,32
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mov loc0=rp
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.body
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;;
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stf.spill.nta [r8]=f4,32
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stf.spill.nta [r9]=f5,32
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mov r17=b1
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;;
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stf.spill.nta [r8]=f16,32
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stf.spill.nta [r9]=f17,32
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mov r18=b2
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;;
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stf.spill.nta [r8]=f18,32
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stf.spill.nta [r9]=f19,32
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mov r19=b3
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;;
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stf.spill.nta [r8]=f20,32
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stf.spill.nta [r9]=f21,32
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mov r20=b4
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;;
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stf.spill.nta [r8]=f22,32
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stf.spill.nta [r9]=f23,32
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mov r21=b5
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;;
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stf.spill.nta [r8]=f24,32
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stf.spill.nta [r9]=f25,32
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mov r22=ar.lc
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;;
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stf.spill.nta [r8]=f26,32
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stf.spill.nta [r9]=f27,32
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mov r24=pr
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;;
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stf.spill.nta [r8]=f28,32
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stf.spill.nta [r9]=f29,32
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#ifdef PTR_MANGLE
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mov loc3=loc0
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;;
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PTR_MANGLE (loc3, loc4)
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#else
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;;
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#endif
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stf.spill.nta [r8]=f30
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stf.spill.nta [r9]=f31
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.mem.offset 8,0; st8.spill.nta [r2]=r6,16 // r6
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.mem.offset 0,0; st8.spill.nta [r3]=r7,16 // r7
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;;
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mov r23=ar.bsp
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mov r25=ar.unat
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mov out0=in0
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#ifdef PTR_MANGLE
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st8.nta [r2]=loc3,16 // b0
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#else
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st8.nta [r2]=loc0,16 // b0
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#endif
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st8.nta [r3]=r17,16 // b1
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mov out1=in1
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;;
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st8.nta [r2]=r18,16 // b2
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st8.nta [r3]=r19,16 // b3
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;;
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st8.nta [r2]=r20,16 // b4
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st8.nta [r3]=r21,16 // b5
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;;
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st8.nta [r2]=loc1,16 // ar.pfs
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st8.nta [r3]=r22,16 // ar.lc
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;;
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st8.nta [r2]=r24,16 // pr
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st8.nta [r3]=r23,16 // ar.bsp
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;;
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st8.nta [r2]=r25 // ar.unat
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st8.nta [r3]=in0 // &__jmp_buf
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#if defined NOT_IN_libc && defined IS_IN_rtld
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/* In ld.so we never save the signal mask. */
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;;
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#else
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br.call.dpnt.few rp=__sigjmp_save
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#endif
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.ret0: // force a new bundle ::q
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mov.m ar.unat=loc2 // restore caller's unat
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mov rp=loc0
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mov ar.pfs=loc1
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mov r8=0
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ret
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END(__sigsetjmp)
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strong_alias(__sigsetjmp, _GI___sigsetjmp)
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weak_extern(_setjmp)
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weak_extern(setjmp)
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