mirror of
https://github.com/cc65/cc65.git
synced 2024-12-24 11:31:31 +00:00
51 lines
873 B
ArmAsm
51 lines
873 B
ArmAsm
;
|
|
; 1998-06-06, Ullrich von Bassewitz
|
|
; 2015-09-11, Greg King
|
|
;
|
|
; int __fastcall__ setjmp (jmp_buf buf);
|
|
;
|
|
|
|
.export __setjmp
|
|
|
|
.import return0
|
|
.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
|
|
|
|
jmp return0
|