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memset2.asm
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;
; File generated by cc65 v 2.18 - Ubuntu 2.18-1
;
.fopt compiler,"cc65 v 2.18 - Ubuntu 2.18-1"
.setcpu "6502"
.smart on
.autoimport on
.case on
.debuginfo off
.importzp sp, sreg, regsave, regbank
.importzp tmp1, tmp2, tmp3, tmp4, ptr1, ptr2, ptr3, ptr4
.macpack longbranch
.forceimport __STARTUP__
.export _memset8
.export _main
; ---------------------------------------------------------------
; void __near__ memset8 (__near__ unsigned char *, unsigned char, unsigned char)
; ---------------------------------------------------------------
.segment "CODE"
.proc _memset8: near
.segment "BSS"
L0002:
.res 1,$00
.segment "CODE"
;
; {
;
jsr pusha
;
; for (i = 0; i < n; i++) {
;
lda #$00
sta L0002
L001B: lda L0002
ldy #$00
cmp (sp),y
bcs L0004
;
; dest[i] = c;
;
ldy #$03
jsr ldaxysp
clc
adc L0002
bcc L001A
inx
L001A: sta ptr1
stx ptr1+1
ldy #$01
lda (sp),y
dey
sta (ptr1),y
;
; for (i = 0; i < n; i++) {
;
inc L0002
jmp L001B
;
; }
;
L0004: jmp incsp4
.endproc
; ---------------------------------------------------------------
; int __near__ main (void)
; ---------------------------------------------------------------
.segment "CODE"
.proc _main: near
.segment "BSS"
L000F:
.res 2,$00
L0011:
.res 1,$00
L0013:
.res 1,$00
.segment "CODE"
;
; uint8_t *dest = (uint8_t *) 0x0600;
;
ldx #$06
lda #$00
sta L000F
stx L000F+1
;
; uint8_t bytes = 0xff;
;
lda #$FF
sta L0011
;
; uint8_t fill = 0x00;
;
lda #$00
sta L0013
;
; memset8(dest, fill, bytes);
;
lda L000F
ldx L000F+1
jsr pushax
lda L0013
jsr pusha
lda L0011
jsr _memset8
;
; return 0;
;
ldx #$00
txa
;
; }
;
rts
.endproc