ack/mach/vax4/libbsd4_1a/head_em.s

#include "em_abs.h"
.sect .text; .sect .rom; .sect .data; .sect .bss
.sect .text

	! $Header$

.define	hol0
.define	.reghp
.define	.trppc
.define	.trpim

	! run time startoff
	.data2	0
	bispsw	$0100		! set FU(0100)
	movl	4(sp),r0
	clrl	-4(r0)
	movl	sp,r0
	movl	(r0)+,r1
	movl	r0,r2
1:
	tstl	(r0)+
	bneq	1b
	cmpl	r0,(r2)
	blssu	2f
	tstl	-(r0)
2:
	pushl	r0
	pushl	r2
	pushl	r1
	movl	$Im1,ap
	chmk	(ap)+		! catch floating point exception
	calls	$3,_m_a_i_n
	movl	$Im2,ap
	movl	r0,6(ap)
	chmk	(ap)+
	halt

	.align	1
Isig8:
	.data2	0x0000
	pushl	8(ap)
	movl	(sp)+,ap
	pushl	Itab [ap]
	jsb	.trp
	movl	$Im1,ap
	chmk	(ap)+
	ret

	.sect .rom
Im1:
	.data2	48
	.data4	2
	.data4	8
	.data4	Isig8

Itab:
	.data4	0
	.data4	EIOVFL
	.data4	EIDIVZ
	.data4	EFOVFL
	.data4	EFDIVZ
	.data4	EFUNFL
	.data4	EILLINS
	.data4	EARRAY
	.data4	EFOVFL
	.data4	EFDIVZ
	.data4	EFUNFL

	.sect .data
Im2:
	.data2	1
	.data4	1
	.data4	0
.reghp:
	.data4	_end
hol0:
	.space	8
.trppc:
	.space	4
.trpim:
	.data4	0
Initial revision 1986-12-12 12:49:50 +00:00			`#include "em_abs.h"`
Adapted for use of ACK VAX assembler 1990-01-11 16:00:19 +00:00			`.sect .text; .sect .rom; .sect .data; .sect .bss`
			`.sect .text`
Initial revision 1986-12-12 12:49:50 +00:00
Adapted for use of ACK VAX assembler 1990-01-11 16:00:19 +00:00			`! $Header$`
Initial revision 1986-12-12 12:49:50 +00:00
Adapted for use of ACK VAX assembler 1990-01-11 16:00:19 +00:00			`.define hol0`
			`.define .reghp`
			`.define .trppc`
			`.define .trpim`
Initial revision 1986-12-12 12:49:50 +00:00
Adapted for use of ACK VAX assembler 1990-01-11 16:00:19 +00:00			`! run time startoff`
			`.data2 0`
			`bispsw $0100 ! set FU(0100)`
Initial revision 1986-12-12 12:49:50 +00:00			`movl 4(sp),r0`
			`clrl -4(r0)`
			`movl sp,r0`
			`movl (r0)+,r1`
			`movl r0,r2`
Adapted for use of ACK VAX assembler 1990-01-11 16:00:19 +00:00			`1:`
Initial revision 1986-12-12 12:49:50 +00:00			`tstl (r0)+`
Adapted for use of ACK VAX assembler 1990-01-11 16:00:19 +00:00			`bneq 1b`
Initial revision 1986-12-12 12:49:50 +00:00			`cmpl r0,(r2)`
Adapted for use of ACK VAX assembler 1990-01-11 16:00:19 +00:00			`blssu 2f`
Initial revision 1986-12-12 12:49:50 +00:00			`tstl -(r0)`
Adapted for use of ACK VAX assembler 1990-01-11 16:00:19 +00:00			`2:`
Initial revision 1986-12-12 12:49:50 +00:00			`pushl r0`
			`pushl r2`
			`pushl r1`
Adapted for use of ACK VAX assembler 1990-01-11 16:00:19 +00:00			`movl $Im1,ap`
			`chmk (ap)+ ! catch floating point exception`
Initial revision 1986-12-12 12:49:50 +00:00			`calls $3,_m_a_i_n`
Adapted for use of ACK VAX assembler 1990-01-11 16:00:19 +00:00			`movl $Im2,ap`
Initial revision 1986-12-12 12:49:50 +00:00			`movl r0,6(ap)`
			`chmk (ap)+`
			`halt`

			`.align 1`
Adapted for use of ACK VAX assembler 1990-01-11 16:00:19 +00:00			`Isig8:`
			`.data2 0x0000`
Initial revision 1986-12-12 12:49:50 +00:00			`pushl 8(ap)`
			`movl (sp)+,ap`
Adapted for use of ACK VAX assembler 1990-01-11 16:00:19 +00:00			`pushl Itab [ap]`
Initial revision 1986-12-12 12:49:50 +00:00			`jsb .trp`
Adapted for use of ACK VAX assembler 1990-01-11 16:00:19 +00:00			`movl $Im1,ap`
Initial revision 1986-12-12 12:49:50 +00:00			`chmk (ap)+`
			`ret`

Adapted for use of ACK VAX assembler 1990-01-11 16:00:19 +00:00			`.sect .rom`
			`Im1:`
			`.data2 48`
			`.data4 2`
			`.data4 8`
			`.data4 Isig8`

			`Itab:`
			`.data4 0`
			`.data4 EIOVFL`
			`.data4 EIDIVZ`
			`.data4 EFOVFL`
			`.data4 EFDIVZ`
			`.data4 EFUNFL`
			`.data4 EILLINS`
			`.data4 EARRAY`
			`.data4 EFOVFL`
			`.data4 EFDIVZ`
			`.data4 EFUNFL`

			`.sect .data`
			`Im2:`
			`.data2 1`
			`.data4 1`
			`.data4 0`
Initial revision 1986-12-12 12:49:50 +00:00			`.reghp:`
Adapted for use of ACK VAX assembler 1990-01-11 16:00:19 +00:00			`.data4 _end`
Initial revision 1986-12-12 12:49:50 +00:00			`hol0:`
			`.space 8`
			`.trppc:`
			`.space 4`
			`.trpim:`
Adapted for use of ACK VAX assembler 1990-01-11 16:00:19 +00:00			`.data4 0`