ack/mach/m68020/libem/csb.s
1989-02-21 10:09:01 +00:00

31 lines
396 B
ArmAsm

.define .csb
.sect .text
.sect .rom
.sect .data
.sect .bss
ECASE=20
.sect .text
.csb:
! case descriptor in a0
! index in d0
move.l (a0)+, a1 ! default jump address
move.l (a0)+, d1 ! # entries
beq 3f
sub.l #1, d1
1:
cmp.l (a0,d1.w*8), d0
dbeq d1, 1b
bne 3f
move.l (4,a0,d1.w*8), a1 ! jump address
3:
move.l a1, d0
beq 4f
jmp (a1)
4:
move.l #ECASE, -(sp)
jmp (.fatal)
.align 2