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setjmp.s@ 5289d7c

Last change on this file since 5289d7c was 8325447, checked in by Thomas Lopatic <thomas@…>, 8 years ago
Removed _ prefix.
Property mode set to `100644`
File size: 828 bytes

Rev	Line
[4f508e6]	1	\| ------------------------------------------------------------------------------
	2	\| setjmp.s -- Unix(tm) compatible setjmp(env) and longjmp(env,ret)
	3	\| Version 3 -- 1987-06-16 -- D.N. Lynx Crowe
	4	\| ------------------------------------------------------------------------------
	5
[f40a309]	6	.text
[4f508e6]	7
[8325447]	8	.xdef setjmp,longjmp
[4f508e6]	9
[8325447]	10	setjmp: movea.l 4(a7),a0 \| Get env pointer
[4f508e6]	11	move.l (a7),(a0) \| Put return address in env
	12	movem.l d1-d7/a1-a7,4(a0) \| Save registers in env
	13	moveq.l #0,d0 \| Set return value to 0
	14	rts \| Return to caller
	15
[8325447]	16	longjmp: move.w 8(a7),d0 \| Get ret value
[4f508e6]	17	bne lj1 \| Jump if non-zero
	18
	19	moveq.l #1,d0 \| Force return value to 1
	20
	21	lj1: movea.l 4(a7),a0 \| Get env pointer
	22	movem.l 4(a0),d1-d7/a1-a7 \| Restore registers from env
	23	move.l (a0),(a7) \| Get return address from env
	24	rts \| Return to caller
	25
[f40a309]	26	.end

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