cc65/libsrc/common/strcmp.s

;
; Ullrich von Bassewitz, 31.05.1998
;
; int strcmp (const char* s1, const char* s2);
;

        .export         _strcmp
        .import         popptr1
        .importzp       ptr1, ptr2

_strcmp:
        sta     ptr2            ; Save s2
        stx     ptr2+1
        jsr     popptr1         ; Get s1
        ;ldy     #0             ; Y=0 guaranteed by popptr1

loop:   lda     (ptr1),y
        cmp     (ptr2),y
        bne     L1
        tax                     ; end of strings?
        beq     L3
        iny
        bne     loop
        inc     ptr1+1
        inc     ptr2+1
        bne     loop

L1:     bcs     L2
        ldx     #$FF
        rts

L2:     ldx     #$01
L3:     rts
This commit was generated by cvs2svn to compensate for changes in r2, 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 2000-05-28 13:40:48 +00:00			`;`
			`; Ullrich von Bassewitz, 31.05.1998`
			`;`
			`; int strcmp (const char* s1, const char* s2);`
			`;`

Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 11:56:54 +00:00			`.export _strcmp`
Added "popptr1" which is of common use to save some bytes. 2018-05-20 13:30:18 +00:00			`.import popptr1`
Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 11:56:54 +00:00			`.importzp ptr1, ptr2`
This commit was generated by cvs2svn to compensate for changes in r2, 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 2000-05-28 13:40:48 +00:00
			`_strcmp:`
Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 11:56:54 +00:00			`sta ptr2 ; Save s2`
			`stx ptr2+1`
Added "popptr1" which is of common use to save some bytes. 2018-05-20 13:30:18 +00:00			`jsr popptr1 ; Get s1`
			`;ldy #0 ; Y=0 guaranteed by popptr1`
This commit was generated by cvs2svn to compensate for changes in r2, 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 2000-05-28 13:40:48 +00:00
Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 11:56:54 +00:00			`loop: lda (ptr1),y`
			`cmp (ptr2),y`
			`bne L1`
			`tax ; end of strings?`
			`beq L3`
			`iny`
			`bne loop`
			`inc ptr1+1`
			`inc ptr2+1`
			`bne loop`
This commit was generated by cvs2svn to compensate for changes in r2, 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 2000-05-28 13:40:48 +00:00
Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 11:56:54 +00:00			`L1: bcs L2`
			`ldx #$FF`
			`rts`
This commit was generated by cvs2svn to compensate for changes in r2, 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 2000-05-28 13:40:48 +00:00
Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 11:56:54 +00:00			`L2: ldx #$01`
			`L3: rts`