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cc65/libsrc/runtime/pusha.s
cuz 4a7642e98c Splitted the push.s module
git-svn-id: svn://svn.cc65.org/cc65/trunk@397 b7a2c559-68d2-44c3-8de9-860c34a00d81
2000-10-26 20:43:54 +00:00

26 lines
343 B
ArmAsm

;
; Ullrich von Bassewitz, 26.10.2000
;
; CC65 runtime: Push value in a onto the stack
;
.export pushaysp, pusha
.importzp sp
; Beware: The optimizer knows about this function!
pushaysp:
lda (sp),y
pusha: ldy sp
beq @L1
dec sp
ldy #0
sta (sp),y
rts
@L1: dec sp+1
dec sp
sta (sp),y
rts