mirror of
https://github.com/cc65/cc65.git
synced 2024-07-09 01:28:58 +00:00
53dd513176
which included commits to RCS files with non-trunk default branches. git-svn-id: svn://svn.cc65.org/cc65/trunk@3 b7a2c559-68d2-44c3-8de9-860c34a00d81
101 lines
971 B
ArmAsm
101 lines
971 B
ArmAsm
;
|
|
; lruntime.s
|
|
;
|
|
; Ullrich von Bassewitz, 22.06.1998
|
|
;
|
|
|
|
; Runtime support for longs.
|
|
|
|
.import popax, pusheax, staspic
|
|
.importzp sp, sreg, tmp2, ptr1
|
|
|
|
;
|
|
; leax (sp),y
|
|
;
|
|
.export ldeax0sp, ldeaxysp
|
|
|
|
ldeax0sp:
|
|
ldy #3
|
|
ldeaxysp:
|
|
lda (sp),y
|
|
sta sreg+1
|
|
dey
|
|
lda (sp),y
|
|
sta sreg
|
|
dey
|
|
lda (sp),y
|
|
tax
|
|
dey
|
|
lda (sp),y
|
|
rts
|
|
|
|
;
|
|
; push a long from (sp),y
|
|
;
|
|
.export pushlysp
|
|
|
|
pushlysp:
|
|
iny
|
|
iny
|
|
lda (sp),y
|
|
iny
|
|
sta sreg
|
|
lda (sp),y
|
|
sta sreg+1
|
|
dey
|
|
dey
|
|
lda (sp),y
|
|
dey
|
|
tax
|
|
lda (sp),y
|
|
jmp pusheax
|
|
|
|
;
|
|
; eax --> ((sp)); pop
|
|
;
|
|
.export steaxspp
|
|
|
|
steaxspp:
|
|
pha
|
|
txa
|
|
pha
|
|
jsr popax ; get address
|
|
sta ptr1
|
|
stx ptr1+1
|
|
ldy #3
|
|
lda sreg+1
|
|
sta (ptr1),y
|
|
dey
|
|
lda sreg
|
|
sta (ptr1),y
|
|
dey
|
|
pla
|
|
tax
|
|
sta (ptr1),y
|
|
dey
|
|
pla
|
|
sta (ptr1),y
|
|
rts
|
|
|
|
;
|
|
; eax --> ((sp)),y
|
|
;
|
|
.export steaxspidx
|
|
|
|
steaxspidx:
|
|
jsr staspic ; Get pointer, store a
|
|
pha
|
|
iny
|
|
lda tmp2
|
|
sta (ptr1),y
|
|
iny
|
|
tax
|
|
lda sreg
|
|
sta (ptr1),y
|
|
iny
|
|
lda sreg+1
|
|
sta (ptr1),y
|
|
pla
|
|
rts
|
|
|