Blame sysdeps/alpha/setjmp.S

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/* Copyright (C) 1992-2018 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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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, see
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   <http://www.gnu.org/licenses/>.  */
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#define __ASSEMBLY__
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#include <sysdep.h>
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#include <jmpbuf-offsets.h>
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	.ent __sigsetjmp
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	.global __sigsetjmp
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__sigsetjmp:
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	ldgp    gp, 0(pv)
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$sigsetjmp_local:
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#ifndef PIC
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#define FRAME	16
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	subq    sp, FRAME, sp
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	.frame  sp, FRAME, ra, 0
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	stq     ra, 0(sp)
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	.mask   0x04000000, -FRAME
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#else
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#define FRAME	0
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	.frame	sp, FRAME, ra, 0
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#endif
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#ifdef PROF
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	.set noat
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	lda	AT, _mcount
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	jsr	AT, (AT), _mcount
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	.set at
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#endif
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	.prologue 1
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	stq	s0, JB_S0*8(a0)
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	stq	s1, JB_S1*8(a0)
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	stq	s2, JB_S2*8(a0)
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	stq	s3, JB_S3*8(a0)
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	stq	s4, JB_S4*8(a0)
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	stq	s5, JB_S5*8(a0)
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#ifdef PTR_MANGLE
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	PTR_MANGLE(t1, ra, t0)
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	stq	t1, JB_PC*8(a0)
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#else
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	stq	ra, JB_PC*8(a0)
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#endif
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#if defined(PTR_MANGLE) && FRAME == 0
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	PTR_MANGLE2(t1, sp, t0)
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#else
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	addq	sp, FRAME, t1
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# ifdef PTR_MANGLE
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	PTR_MANGLE2(t1, t1, t0)
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# endif
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#endif
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	stq	t1, JB_SP*8(a0)
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#ifdef PTR_MANGLE
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	PTR_MANGLE2(t1, fp, t0)
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	stq	t1, JB_FP*8(a0)
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#else
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	stq	fp, JB_FP*8(a0)
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#endif
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	stt	$f2, JB_F2*8(a0)
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	stt	$f3, JB_F3*8(a0)
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	stt	$f4, JB_F4*8(a0)
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	stt	$f5, JB_F5*8(a0)
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	stt	$f6, JB_F6*8(a0)
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	stt	$f7, JB_F7*8(a0)
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	stt	$f8, JB_F8*8(a0)
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	stt	$f9, JB_F9*8(a0)
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#ifndef PIC
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	/* Call to C to (potentially) save our signal mask.  */
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	jsr	ra, __sigjmp_save
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	ldq	ra, 0(sp)
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	addq	sp, 16, sp
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	ret
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#elif IS_IN (rtld)
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	/* In ld.so we never save the signal mask.  */
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	mov	0, v0
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	ret
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#else
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	/* Tailcall to save the signal mask.  */
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	br	$31, __sigjmp_save	!samegp
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#endif
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END(__sigsetjmp)
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hidden_def (__sigsetjmp)
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/* Put these traditional entry points in the same file so that we can
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   elide much of the nonsense in trying to jmp to the real function.  */
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ENTRY(_setjmp)
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	ldgp	gp, 0(pv)
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	.prologue 1
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	mov	0, a1
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	br	$sigsetjmp_local
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END(_setjmp)
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libc_hidden_def (_setjmp)
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ENTRY(setjmp)
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	ldgp	gp, 0(pv)
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	.prologue 1
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	mov	1, a1
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	br	$sigsetjmp_local
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END(setjmp)
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weak_extern(_setjmp)
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weak_extern(setjmp)