bslathi19/cc65
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Changed most of the library sources to use .CAP instead of .CPU.

Browse Source
This commit is contained in:
Kugel Fuhr
2025-07-01 07:25:32 +02:00
parent f333b300f1
commit c72126e68f
59 changed files with 122 additions and 232 deletions
Download Patch File Download Diff File Expand all files Collapse all files

83
libsrc/common/strncat.s
View File

@@ -8,64 +8,63 @@
.export _strncat
.import popax, popptr1
.importzp ptr1, ptr2, ptr3, tmp1, tmp2
.macpack cpu
_strncat:
inx
stx tmp2
tax
inx
stx tmp1 ; save count with each byte incremented separately
inx
stx tmp2
tax
inx
stx tmp1 ; save count with each byte incremented separately
jsr popptr1 ; get src
jsr popptr1 ; get src
jsr popax ; get dest
sta ptr3 ; remember for function return
stx ptr3+1
stx ptr2+1
tay ; low byte as offset in Y
.if (.cpu .bitand ::CPU_ISET_65SC02)
stz ptr2
jsr popax ; get dest
sta ptr3 ; remember for function return
stx ptr3+1
stx ptr2+1
tay ; low byte as offset in Y
.if .cap(CPU_HAS_STZ)
stz ptr2
.else
ldx #0
stx ptr2 ; destination on page boundary
ldx #0
stx ptr2 ; destination on page boundary
.endif
; find end of dest
L1: lda (ptr2),y
beq L2
iny
bne L1
inc ptr2+1
bne L1
L1: lda (ptr2),y
beq L2
iny
bne L1
inc ptr2+1
bne L1
; end found, apply offset to dest ptr and reset y
L2: sty ptr2
L2: sty ptr2
; copy src. We've put the ones complement of the count into the counter, so
; we'll increment the counter on top of the loop
L3: ldy #0
ldx tmp1 ; low counter byte
L3: ldy #0
ldx tmp1 ; low counter byte
L4: dex
bne L5
dec tmp2
beq L6 ; jump if done
L5: lda (ptr1),y
sta (ptr2),y
beq L7
iny
bne L4
inc ptr1+1
inc ptr2+1
bne L4
L4: dex
bne L5
dec tmp2
beq L6 ; jump if done
L5: lda (ptr1),y
sta (ptr2),y
beq L7
iny
bne L4
inc ptr1+1
inc ptr2+1
bne L4
; done, set the trailing zero and return pointer to dest
L6: lda #0
sta (ptr2),y
L7: lda ptr3
ldx ptr3+1
rts
L6: lda #0
sta (ptr2),y
L7: lda ptr3
ldx ptr3+1
rts