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cc65/libsrc/runtime/pusha.s
cuz 4f0664bea0 Added some 65C02 code
git-svn-id: svn://svn.cc65.org/cc65/trunk@487 b7a2c559-68d2-44c3-8de9-860c34a00d81
2000-11-28 13:33:08 +00:00

30 lines
374 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
.ifpc02
sta (sp)
.else
ldy #0
sta (sp),y
.endif
rts
@L1: dec sp+1
dec sp
sta (sp),y
rts