mirror of
https://github.com/cc65/cc65.git
synced 2024-07-05 06:28:57 +00:00
39 lines
587 B
ArmAsm
39 lines
587 B
ArmAsm
|
;
|
||
|
|
; Ullrich von Bassewitz, 29.12.1999
|
||
|
|
;
|
||
|
|
; CC65 runtime: Load eax from immidiate value following the call
|
||
|
|
;
|
||
|
|
|
||
|
|
.export ldeax
|
||
|
|
.importzp sreg, ptr4
|
||
|
|
|
||
|
|
|
||
|
|
ldeax: pla ; Low byte of return address
|
||
|
|
sta ptr4
|
||
|
|
pla ; high byte of return address
|
||
|
|
sta ptr4+1
|
||
|
|
ldy #4 ; high byte of value
|
||
|
|
lda (ptr4),y
|
||
|
|
sta sreg+1
|
||
|
|
dey
|
||
|
|
lda (ptr4),y
|
||
|
|
sta sreg
|
||
|
|
dey
|
||
|
|
lda (ptr4),y
|
||
|
|
tax
|
||
|
|
dey
|
||
|
|
lda (ptr4),y
|
||
|
|
tay ; Save low byte
|
||
|
|
clc
|
||
|
|
lda #4
|
||
|
|
adc ptr4
|
||
|
|
sta ptr4
|
||
|
|
lda ptr4+1
|
||
|
|
adc #$00
|
||
|
|
pha ; High byte of new return address
|
||
|
|
lda ptr4
|
||
|
|
pha ; Low byte of new return address
|
||
|
|
tya ; Low byte of fetched value
|
||
|
|
rts
|
||
|
|
|