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52 lines
2.4 KiB
ArmAsm
52 lines
2.4 KiB
ArmAsm
##############################################################################
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# setjmp.S -- CRX setjmp routine #
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# #
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# Copyright (c) 2004 National Semiconductor Corporation #
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# #
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# The authors hereby grant permission to use, copy, modify, distribute, #
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# and license this software and its documentation for any purpose, provided #
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# that existing copyright notices are retained in all copies and that this #
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# notice is included verbatim in any distributions. No written agreement, #
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# license, or royalty fee is required for any of the authorized uses. #
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# Modifications to this software may be copyrighted by their authors #
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# and need not follow the licensing terms described here, provided that #
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# the new terms are clearly indicated on the first page of each file where #
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# they apply. #
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# #
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# C library -- setjmp, longjmp #
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# longjmp(a,v) #
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# will generate a "return(v)" #
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# from the last call to #
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# setjmp(a) #
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# by restoring r7-ra, sp, #
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# and pc from 'a' #
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# and doing a return. (Makes sure that longjmp never returns 0). #
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##############################################################################
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.text
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.file "setjmp.s"
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.align 4
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.globl _setjmp
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.align 4
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_setjmp:
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#r2: .blkw
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storm r2,{r7,r8,r9,r10,r11,r12,r13,r14}
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stord sp,0(r2)
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movd $0,r0
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jump ra
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.globl _longjmp
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_longjmp:
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#r2: .blkw # pointer save area
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#r3: .blkw # ret vlaue
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loadm r2, {r7,r8,r9,r10,r11,r12,r13,ra}
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loadd 0(r2), sp
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movd r3, r0
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cmpd $0, r3
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bne end1
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movd $1, r0
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end1:
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jump ra
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.align 4
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