mirror of
https://github.com/cc65/cc65.git
synced 2024-07-01 23:29:41 +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
30 lines
397 B
ArmAsm
30 lines
397 B
ArmAsm
;
|
|
; Ullrich von Bassewitz, 05.08.1998
|
|
;
|
|
; CC65 runtime: sub ints reversed
|
|
;
|
|
|
|
.export tosrsuba0, tosrsubax
|
|
.import addysp1
|
|
.importzp sp, tmp1
|
|
|
|
;
|
|
; AX = AX - TOS
|
|
;
|
|
|
|
tosrsuba0:
|
|
ldx #0
|
|
tosrsubax:
|
|
ldy #0
|
|
sec
|
|
sbc (sp),y ; lo byte
|
|
sta tmp1 ; save lo byte
|
|
txa
|
|
iny
|
|
sbc (sp),y ; hi byte
|
|
tax
|
|
lda tmp1
|
|
jmp addysp1 ; drop TOS, set condition codes
|
|
|
|
|