mirror of
https://github.com/cc65/cc65.git
synced 2024-12-27 15:29:46 +00:00
53 lines
536 B
ArmAsm
53 lines
536 B
ArmAsm
|
;
|
||
|
|
; Ullrich von Bassewitz, 06.06.1998
|
||
|
|
;
|
||
|
|
; int setjmp (jmp_buf buf);
|
||
|
|
;
|
||
|
|
|
||
|
|
.export __setjmp
|
||
|
|
.importzp sp, ptr1
|
||
|
|
|
||
|
|
__setjmp:
|
||
|
|
sta ptr1 ; Save buf
|
||
|
|
stx ptr1+1
|
||
|
|
ldy #0
|
||
|
|
|
||
|
|
; The parameter stack is now empty, put it into buf
|
||
|
|
|
||
|
|
lda sp
|
||
|
|
sta (ptr1),y
|
||
|
|
iny
|
||
|
|
lda sp+1
|
||
|
|
sta (ptr1),y
|
||
|
|
iny
|
||
|
|
|
||
|
|
; Put the return stack pointer next
|
||
|
|
|
||
|
|
tsx
|
||
|
|
inx
|
||
|
|
inx ; drop return address
|
||
|
|
txa
|
||
|
|
sta (ptr1),y
|
||
|
|
iny
|
||
|
|
|
||
|
|
; Last thing is the return address.
|
||
|
|
|
||
|
|
pla
|
||
|
|
tax
|
||
|
|
pla
|
||
|
|
sta (ptr1),y ; high byte first
|
||
|
|
iny
|
||
|
|
pha
|
||
|
|
txa
|
||
|
|
sta (ptr1),y
|
||
|
|
pha
|
||
|
|
|
||
|
|
; Return zero
|
||
|
|
|
||
|
|
lda #0
|
||
|
|
tax
|
||
|
|
rts
|
||
|
|
|
||
|
|
|
||
|
|
|