ack/mach/6500/libem/los.s

36 lines
601 B
ArmAsm
Raw Permalink Normal View History

1984-12-17 11:03:13 +00:00
.define Los
1987-01-30 18:41:42 +00:00
.sect .text
.sect .rom
.sect .data
.sect .bss
.sect .text
1984-12-17 11:03:13 +00:00
! This subroutine perfoms the LOS instruction.
! For detail see rapport IR-81.
Los:
cmp #0
bne 3f
cpx #1
bne 1f ! the size is one
jsr Pop ! get address
jsr Loi1 ! push it on the stack
jmp Push
1: cpx #2
bne 2f ! the size is two
jsr Pop ! get address
jsr Loi ! push it on the stack
jmp Push
2: cpx #4
bne 3f ! the size is four
jsr Pop ! get address
jmp Ldi ! push it on the stack
3: sta ARTH+1 ! the size is greater than four
txa
tay
jsr Pop ! get address
jmp Loil ! push it on the stack