ack/mach/m68020/libem/csa.s
1987-01-29 22:10:18 +00:00

26 lines
438 B
ArmAsm

.define .csa
.sect .text
.sect .rom
.sect .data
.sect .bss
.sect .text
.csa:
move.l (sp)+, a0 ! jump table address
move.l (a0)+, a1 ! default address
move.l (sp)+, d0 ! index
sub.l (a0)+, d0 ! index - lower bound
blt 1f
cmp.l (a0)+, d0 ! rel. index, upper - lower bound
bgt 1f
move.l (a0,d0.l*4), a1 ! jump address
1:
move.l a1, d0
beq 2f
jmp (a1) ! jump to specified address
2:
move.l #ECASE, -(sp)
jmp (.fatal)
.align 2