mirror of
https://gitlab.com/camelot/kickc.git
synced 2024-06-29 09:29:31 +00:00
137 lines
2.1 KiB
NASM
137 lines
2.1 KiB
NASM
// Test effective live range and register allocation
|
|
// Here outsw::sw and outw::w should have the same allocation
|
|
// Commodore 64 PRG executable file
|
|
.file [name="liverange-10.prg", type="prg", segments="Program"]
|
|
.segmentdef Program [segments="Basic, Code, Data"]
|
|
.segmentdef Basic [start=$0801]
|
|
.segmentdef Code [start=$80d]
|
|
.segmentdef Data [startAfter="Code"]
|
|
.segment Basic
|
|
:BasicUpstart(main)
|
|
.label SCREEN = $400
|
|
.segment Code
|
|
main: {
|
|
.label sw = 4
|
|
.label w = 2
|
|
ldx #0
|
|
lda #<-$14
|
|
sta.z sw
|
|
lda #>-$14
|
|
sta.z sw+1
|
|
__b1:
|
|
// outsw(sw)
|
|
lda.z sw
|
|
sta.z outsw.sw
|
|
lda.z sw+1
|
|
sta.z outsw.sw+1
|
|
jsr outsw
|
|
// for(signed int sw: -20..19 )
|
|
inc.z sw
|
|
bne !+
|
|
inc.z sw+1
|
|
!:
|
|
lda.z sw+1
|
|
cmp #>$14
|
|
bne __b1
|
|
lda.z sw
|
|
cmp #<$14
|
|
bne __b1
|
|
lda #<0
|
|
sta.z w
|
|
sta.z w+1
|
|
__b2:
|
|
// outw(w)
|
|
jsr outw
|
|
// for(unsigned int w: 0..39 )
|
|
inc.z w
|
|
bne !+
|
|
inc.z w+1
|
|
!:
|
|
lda.z w+1
|
|
bne __b2
|
|
lda.z w
|
|
cmp #$28
|
|
bne __b2
|
|
// }
|
|
rts
|
|
}
|
|
// void outsw(__zp(2) int sw)
|
|
outsw: {
|
|
.label sw = 2
|
|
// if(sw<0)
|
|
lda.z sw+1
|
|
bpl __b1
|
|
// out('-')
|
|
lda #'-'
|
|
jsr out
|
|
// sw = -sw
|
|
lda #0
|
|
sec
|
|
sbc.z sw
|
|
sta.z sw
|
|
lda #0
|
|
sbc.z sw+1
|
|
sta.z sw+1
|
|
__b1:
|
|
// outw((unsigned int)sw)
|
|
jsr outw
|
|
// }
|
|
rts
|
|
}
|
|
// void outw(__zp(2) unsigned int w)
|
|
outw: {
|
|
.label w = 2
|
|
// BYTE1(w)
|
|
lda.z w+1
|
|
// BYTE1(w)<<4
|
|
asl
|
|
asl
|
|
asl
|
|
asl
|
|
// out(HEXTAB[BYTE1(w)<<4])
|
|
tay
|
|
lda HEXTAB,y
|
|
jsr out
|
|
// BYTE1(w)
|
|
lda.z w+1
|
|
// BYTE1(w)&0x0f
|
|
and #$f
|
|
// out(HEXTAB[BYTE1(w)&0x0f])
|
|
tay
|
|
lda HEXTAB,y
|
|
jsr out
|
|
// BYTE0(w)
|
|
lda.z w
|
|
// BYTE0(w)<<4
|
|
asl
|
|
asl
|
|
asl
|
|
asl
|
|
// out(HEXTAB[BYTE0(w)<<4])
|
|
tay
|
|
lda HEXTAB,y
|
|
jsr out
|
|
// BYTE0(w)
|
|
lda.z w
|
|
// BYTE0(w)&0x0f
|
|
and #$f
|
|
// out(HEXTAB[BYTE0(w)&0x0f])
|
|
tay
|
|
lda HEXTAB,y
|
|
jsr out
|
|
// }
|
|
rts
|
|
}
|
|
// void out(__register(A) char c)
|
|
out: {
|
|
// idx++;
|
|
inx
|
|
// SCREEN[idx] = c
|
|
sta SCREEN,x
|
|
// }
|
|
rts
|
|
}
|
|
.segment Data
|
|
HEXTAB: .text "0123456789abcdef"
|
|
.byte 0
|