setjmp.s

Newlib 嵌入式 C库 标准实现代码

/* Copyright (c) 1995, 2002 Red Hat Incorporated.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
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 *    notice, this list of conditions and the following disclaimer.
 *
 *    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.
 *
 *    The name of Red Hat Incorporated may not be used to endorse
 *    or promote products derived from this software without specific
 *    prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 RED HAT INCORPORATED BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * 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.
 */

/* Note I don't know an easy way to get the FP version into the
   traditional C library and the non-FP version into the soft-float
   library.  Maybe we'll have to have -msoft-float trigger something
   like -DSOFT_FLOAT if this issue ever arises.  */

#include "DEFS.h"

#if 0
	.SPACE $PRIVATE$
	.SUBSPA $DATA$,QUAD=1,ALIGN=8,ACCESS=31
	.SUBSPA $BSS$,QUAD=1,ALIGN=8,ACCESS=31,ZERO,SORT=82
	.SPACE $TEXT$
	.SUBSPA $LIT$,QUAD=0,ALIGN=8,ACCESS=44
	.SUBSPA $CODE$,QUAD=0,ALIGN=8,ACCESS=44,CODE_ONLY
	.IMPORT $global$,DATA
	.IMPORT $$dyncall,MILLICODE
; gcc_compiled.:
#endif
	TEXT_SEGMENT

	.align 4
	.EXPORT setjmp,ENTRY,PRIV_LEV=3,ARGW0=GR,RTNVAL=GR
setjmp
	.PROC
	.CALLINFO FRAME=64,NO_CALLS,SAVE_SP,ENTRY_GR=3
	.ENTRY
	stwm  %r30,4(%r26)
	stwm  %r2,4(%r26)
	stwm  %r3,4(%r26)
	stwm  %r4,4(%r26)
	stwm  %r5,4(%r26)
	stwm  %r6,4(%r26)
	stwm  %r7,4(%r26)
	stwm  %r8,4(%r26)
	stwm  %r9,4(%r26)
	stwm  %r10,4(%r26)
	stwm  %r11,4(%r26)
	stwm  %r12,4(%r26)
	stwm  %r13,4(%r26)
	stwm  %r14,4(%r26)
	stwm  %r15,4(%r26)
	stwm  %r16,4(%r26)
	stwm  %r17,4(%r26)
	stwm  %r18,4(%r26)
	stwm  %r27,4(%r26)
#ifdef FP
	; jmp_buf may only have a 4 byte alignment, so handle FP stores
	; very carefully.
	fstds %fr12,-16(%r30)
	ldw -16(%r30),%r28
	stwm  %r28,4(%r26)
	ldw -12(%r30),%r28
	stwm  %r28,4(%r26) 
	fstds %fr13,-16(%r30)
	ldw -16(%r30),%r28
	stwm  %r28,4(%r26)
	ldw -12(%r30),%r28
	stwm  %r28,4(%r26) 
	fstds %fr14,-16(%r30)
	ldw -16(%r30),%r28
	stwm  %r28,4(%r26)
	ldw -12(%r30),%r28
	stwm  %r28,4(%r26) 
	fstds %fr15,-16(%r30)
	ldw -16(%r30),%r28
	stwm  %r28,4(%r26)
	ldw -12(%r30),%r28
	stwm  %r28,4(%r26) 
#endif

	bv 0(%r2)
	copy %r0,%r28
	.EXIT
	.PROCEND
	.align 4
	.EXPORT longjmp,ENTRY,PRIV_LEV=3,ARGW0=GR,ARGW1=GR,RTNVAL=GR
longjmp
	.PROC
	.CALLINFO FRAME=64,NO_CALLS,SAVE_SP,ENTRY_GR=3
	.ENTRY
	ldwm 4(%r26),%r30
	ldwm 4(%r26),%r2
	ldwm 4(%r26),%r3
	ldwm 4(%r26),%r4
	ldwm 4(%r26),%r5
	ldwm 4(%r26),%r6
	ldwm 4(%r26),%r7
	ldwm 4(%r26),%r8
	ldwm 4(%r26),%r9
	ldwm 4(%r26),%r10
	ldwm 4(%r26),%r11
	ldwm 4(%r26),%r12
	ldwm 4(%r26),%r13
	ldwm 4(%r26),%r14
	ldwm 4(%r26),%r15
	ldwm 4(%r26),%r16
	ldwm 4(%r26),%r17
	ldwm 4(%r26),%r18
	ldwm 4(%r26),%r27
#ifdef FP
	ldwm 4(%r26),%r28
	stw %r28,-16(%r30)
	ldwm 4(%r26),%r28
	stw %r28,-12(%r30)
	fldds -16(%r30),%fr12
	ldwm 4(%r26),%r28
	stw %r28,-16(%r30)
	ldwm 4(%r26),%r28
	stw %r28,-12(%r30)
	fldds -16(%r30),%fr13
	ldwm 4(%r26),%r28
	stw %r28,-16(%r30)
	ldwm 4(%r26),%r28
	stw %r28,-12(%r30)
	fldds -16(%r30),%fr14
	ldwm 4(%r26),%r28
	stw %r28,-16(%r30)
	ldwm 4(%r26),%r28
	stw %r28,-12(%r30)
	fldds -16(%r30),%fr15
#endif
	comclr,<> %r0,%r25,%r0
	ldi 1,%r25
	bv 0(%r2)
	copy %r25,%r28
	.EXIT
	.PROCEND