;
; File generated by cc65 v 2.11.0
;
	.fopt		compiler,"cc65 v 2.11.0"
	.setcpu		"6502"
	.smart		on
	.autoimport	on
	.case		on
	.debuginfo	on
	.importzp	sp, sreg, regsave, regbank, tmp1, ptr1, ptr2
	.macpack	longbranch
	.dbg		file, "uncompress.c", 1065, 1064347899
	.dbg		file, "../../include/zlib.h", 7100, 1006113957
	.import		_inflatemem
	.export		_uncompress
	.import		_adler32

; ---------------------------------------------------------------
; int __near__ uncompress (unsigned char*, unsigned int*, const unsigned char*, unsigned int)
; ---------------------------------------------------------------

.segment	"CODE"

.proc	_uncompress: near

.segment	"CODE"

;
; if ((source[0] & 0x8f) != Z_DEFLATED || source[1] & 0x20)
;
	.dbg	line, "uncompress.c", 23
	jsr     decsp8
	ldy     #$0B
	jsr     ldaxysp
	ldy     #$00
	sta     ptr1
	stx     ptr1+1
	lda     (ptr1),y
	and     #$8F
	cmp     #$08
	bne     L0004
	ldy     #$0B
	jsr     ldaxysp
	ldy     #$01
	sta     ptr1
	stx     ptr1+1
	lda     (ptr1),y
	and     #$20
	beq     L0003
;
; return Z_DATA_ERROR;
;
	.dbg	line, "uncompress.c", 24
L0004:	ldx     #$FF
	lda     #$FD
	jmp     L0002
;
; if ((((unsigned) source[0] << 8) | (unsigned char) source[1]) % 31)
;
	.dbg	line, "uncompress.c", 25
L0003:	ldy     #$0B
	jsr     ldaxysp
	ldy     #$00
	sta     ptr1
	stx     ptr1+1
	lda     (ptr1),y
	tax
	stx     ptr2+1
	ldy     #$0B
	jsr     ldaxysp
	ldy     #$01
	sta     ptr1
	stx     ptr1+1
	ldx     #$00
	lda     (ptr1),y
	sta     ptr2
	txa
	ora     ptr2+1
	tax
	lda     ptr2
	jsr     pushax
	lda     #$1F
	jsr     tosumoda0
	stx     tmp1
	ora     tmp1
	beq     L000C
;
; return Z_DATA_ERROR;
;
	.dbg	line, "uncompress.c", 26
	ldx     #$FF
	lda     #$FD
	jmp     L0002
;
; *destLen = len = inflatemem(dest, source + 2);
;
	.dbg	line, "uncompress.c", 27
L000C:	ldy     #$0F
	jsr     pushwysp
	ldy     #$13
	jsr     pushwysp
	ldy     #$0F
	jsr     ldaxysp
	clc
	adc     #$02
	bcc     L0019
	inx
L0019:	jsr     _inflatemem
	ldy     #$08
	jsr     staxysp
	ldy     #$00
	jsr     staxspidx
;
; ptr = (unsigned char*) source + sourceLen - 4;
;
	.dbg	line, "uncompress.c", 28
	ldy     #$0A
	lda     (sp),y
	clc
	ldy     #$08
	adc     (sp),y
	pha
	ldy     #$0B
	lda     (sp),y
	ldy     #$09
	adc     (sp),y
	tax
	pla
	sec
	sbc     #$04
	bcs     L001C
	dex
L001C:	ldy     #$04
	jsr     staxysp
;
; csum = adler32(adler32(0L, Z_NULL, 0), dest, len);
;
	.dbg	line, "uncompress.c", 29
	jsr     decsp6
	jsr     decsp6
	ldx     #$00
	ldy     #$02
	txa
	sta     (sp),y
	iny
	sta     (sp),y
	iny
	sta     (sp),y
	iny
	sta     (sp),y
	tay
	sta     (sp),y
	iny
	sta     (sp),y
	jsr     _adler32
	ldy     #$02
	jsr     steaxysp
	ldy     #$15
	jsr     ldaxysp
	ldy     #$00
	sta     (sp),y
	iny
	txa
	sta     (sp),y
	ldy     #$0D
	jsr     ldaxysp
	jsr     _adler32
	ldy     #$00
	jsr     steaxysp
;
; if ((unsigned char) csum != ptr[3]
;
	.dbg	line, "uncompress.c", 30
	ldy     #$00
	ldx     #$00
	lda     (sp),y
	jsr     pushax
	ldy     #$07
	jsr     ldaxysp
;
; || (unsigned char) (csum >> 8) != ptr[2]
;
	.dbg	line, "uncompress.c", 31
	ldy     #$03
	sta     ptr1
	stx     ptr1+1
	ldx     #$00
	lda     (ptr1),y
	jsr     tosicmp
	bne     L0026
	ldy     #$03
	jsr     ldeaxysp
	txa
	ldx     sreg
	jsr     pushax
	ldy     #$07
	jsr     ldaxysp
;
; || (unsigned char) (csum >> 16) != ptr[1]
;
	.dbg	line, "uncompress.c", 32
	ldy     #$02
	sta     ptr1
	stx     ptr1+1
	ldx     #$00
	lda     (ptr1),y
	jsr     tosicmp
	bne     L0026
	ldy     #$03
	jsr     ldeaxysp
	ldx     sreg+1
	lda     sreg
	jsr     pushax
	ldy     #$07
	jsr     ldaxysp
;
; || (unsigned char) (csum >> 24) != ptr[0])
;
	.dbg	line, "uncompress.c", 33
	ldy     #$01
	sta     ptr1
	stx     ptr1+1
	ldx     #$00
	lda     (ptr1),y
	jsr     tosicmp
	bne     L0026
	ldy     #$03
	jsr     ldeaxysp
	jsr     pusheax
	lda     #$18
	jsr     tosshreax
	jsr     pushax
	ldy     #$07
	jsr     ldaxysp
	ldy     #$00
	sta     ptr1
	stx     ptr1+1
	ldx     #$00
	lda     (ptr1),y
	jsr     tosicmp
	beq     L0025
;
; return Z_DATA_ERROR;
;
	.dbg	line, "uncompress.c", 34
L0026:	ldx     #$FF
	lda     #$FD
	jmp     L0002
;
; return Z_OK;
;
	.dbg	line, "uncompress.c", 35
L0025:	ldx     #$00
	txa
;
; }
;
	.dbg	line, "uncompress.c", 36
L0002:	ldy     #$10
	jmp     addysp
	.dbg	line

.endproc