mirror of https://gitlab.com/camelot/kickc.git
462 lines
8.4 KiB
NASM
462 lines
8.4 KiB
NASM
// Tests the different standard C types
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// Commodore 64 PRG executable file
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.file [name="c-types.prg", type="prg", segments="Program"]
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.segmentdef Program [segments="Basic, Code, Data"]
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.segmentdef Basic [start=$0801]
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.segmentdef Code [start=$80d]
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.segmentdef Data [startAfter="Code"]
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.segment Basic
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:BasicUpstart(main)
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.label print_screen = $400
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.label print_char_cursor = 2
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.label print_line_cursor = 6
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.segment Code
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main: {
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// print_cls()
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jsr print_cls
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// testChar()
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jsr testChar
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// testShort()
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jsr testShort
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// testInt()
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jsr testInt
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// testLong()
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jsr testLong
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// }
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rts
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}
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// Clear the screen. Also resets current line/char cursor.
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print_cls: {
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// memset(print_screen, ' ', 1000)
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jsr memset
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// }
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rts
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}
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testChar: {
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.const u = $e
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.const n = $e
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.label s = -$e
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// print_str("char: ")
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lda #<print_screen
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sta.z print_char_cursor
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lda #>print_screen
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sta.z print_char_cursor+1
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lda #<str
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sta.z print_str.str
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lda #>str
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sta.z print_str.str+1
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jsr print_str
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// print_uchar(u)
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ldx #u
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jsr print_uchar
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// print_char(' ')
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lda #' '
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jsr print_char
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// print_uchar(n)
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ldx #n
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jsr print_uchar
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// print_char(' ')
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lda #' '
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jsr print_char
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// print_schar(s)
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jsr print_schar
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// print_ln()
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lda #<print_screen
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sta.z print_line_cursor
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lda #>print_screen
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sta.z print_line_cursor+1
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jsr print_ln
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// }
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rts
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.segment Data
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str: .text "char: "
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.byte 0
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}
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.segment Code
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testShort: {
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.const u = $578
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.const n = -$578
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.const s = -$578
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lda.z print_line_cursor
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sta.z print_char_cursor
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lda.z print_line_cursor+1
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sta.z print_char_cursor+1
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// print_str("short: ")
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lda #<str
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sta.z print_str.str
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lda #>str
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sta.z print_str.str+1
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jsr print_str
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// print_uint(u)
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lda #<u
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sta.z print_uint.w
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lda #>u
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sta.z print_uint.w+1
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jsr print_uint
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// print_char(' ')
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lda #' '
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jsr print_char
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// print_sint(n)
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lda #<n
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sta.z print_sint.w
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lda #>n
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sta.z print_sint.w+1
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jsr print_sint
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// print_char(' ')
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lda #' '
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jsr print_char
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// print_sint(s)
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lda #<s
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sta.z print_sint.w
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lda #>s
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sta.z print_sint.w+1
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jsr print_sint
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// print_ln()
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jsr print_ln
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// }
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rts
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.segment Data
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str: .text "short: "
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.byte 0
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}
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.segment Code
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testInt: {
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.const u = $578
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.const n = -$578
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.const s = -$578
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lda.z print_line_cursor
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sta.z print_char_cursor
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lda.z print_line_cursor+1
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sta.z print_char_cursor+1
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// print_str("int: ")
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lda #<str
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sta.z print_str.str
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lda #>str
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sta.z print_str.str+1
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jsr print_str
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// print_uint(u)
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lda #<u
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sta.z print_uint.w
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lda #>u
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sta.z print_uint.w+1
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jsr print_uint
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// print_char(' ')
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lda #' '
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jsr print_char
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// print_sint(n)
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lda #<n
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sta.z print_sint.w
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lda #>n
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sta.z print_sint.w+1
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jsr print_sint
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// print_char(' ')
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lda #' '
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jsr print_char
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// print_sint(s)
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lda #<s
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sta.z print_sint.w
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lda #>s
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sta.z print_sint.w+1
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jsr print_sint
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// print_ln()
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jsr print_ln
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// }
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rts
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.segment Data
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str: .text "int: "
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.byte 0
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}
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.segment Code
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testLong: {
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.const u = $222e0
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.const n = -$222e0
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.const s = -$222e0
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lda.z print_line_cursor
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sta.z print_char_cursor
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lda.z print_line_cursor+1
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sta.z print_char_cursor+1
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// print_str("long: ")
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lda #<str
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sta.z print_str.str
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lda #>str
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sta.z print_str.str+1
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jsr print_str
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// print_ulong(u)
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lda #<u
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sta.z print_ulong.dw
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lda #>u
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sta.z print_ulong.dw+1
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lda #<u>>$10
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sta.z print_ulong.dw+2
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lda #>u>>$10
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sta.z print_ulong.dw+3
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jsr print_ulong
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// print_char(' ')
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lda #' '
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jsr print_char
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// print_slong(n)
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lda #<n
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sta.z print_slong.dw
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lda #>n
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sta.z print_slong.dw+1
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lda #<n>>$10
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sta.z print_slong.dw+2
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lda #>n>>$10
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sta.z print_slong.dw+3
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jsr print_slong
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// print_char(' ')
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lda #' '
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jsr print_char
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// print_slong(s)
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lda #<s
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sta.z print_slong.dw
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lda #>s
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sta.z print_slong.dw+1
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lda #<s>>$10
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sta.z print_slong.dw+2
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lda #>s>>$10
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sta.z print_slong.dw+3
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jsr print_slong
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// print_ln()
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jsr print_ln
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// }
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rts
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.segment Data
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str: .text "long: "
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.byte 0
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}
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.segment Code
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// Copies the character c (an unsigned char) to the first num characters of the object pointed to by the argument str.
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// void * memset(void *str, char c, unsigned int num)
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memset: {
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.const c = ' '
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.const num = $3e8
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.label str = print_screen
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.label end = str+num
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.label dst = 4
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lda #<str
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sta.z dst
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lda #>str
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sta.z dst+1
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__b1:
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// for(char* dst = str; dst!=end; dst++)
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lda.z dst+1
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cmp #>end
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bne __b2
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lda.z dst
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cmp #<end
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bne __b2
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// }
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rts
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__b2:
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// *dst = c
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lda #c
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ldy #0
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sta (dst),y
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// for(char* dst = str; dst!=end; dst++)
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inc.z dst
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bne !+
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inc.z dst+1
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!:
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jmp __b1
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}
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// Print a zero-terminated string
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// void print_str(__zp(4) char *str)
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print_str: {
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.label str = 4
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__b1:
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// while(*str)
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ldy #0
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lda (str),y
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cmp #0
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bne __b2
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// }
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rts
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__b2:
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// print_char(*(str++))
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ldy #0
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lda (str),y
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jsr print_char
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// print_char(*(str++));
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inc.z str
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bne !+
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inc.z str+1
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!:
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jmp __b1
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}
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// Print a char as HEX
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// void print_uchar(__register(X) char b)
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print_uchar: {
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// b>>4
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txa
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lsr
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lsr
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lsr
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lsr
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// print_char(print_hextab[b>>4])
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tay
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lda print_hextab,y
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// Table of hexadecimal digits
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jsr print_char
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// b&0xf
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lda #$f
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axs #0
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// print_char(print_hextab[b&0xf])
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lda print_hextab,x
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jsr print_char
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// }
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rts
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}
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// Print a single char
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// void print_char(__register(A) char ch)
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print_char: {
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// *(print_char_cursor++) = ch
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ldy #0
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sta (print_char_cursor),y
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// *(print_char_cursor++) = ch;
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inc.z print_char_cursor
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bne !+
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inc.z print_char_cursor+1
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!:
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// }
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rts
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}
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// Print a signed char as HEX
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// void print_schar(signed char b)
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print_schar: {
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.const b = -testChar.s
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// print_char('-')
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lda #'-'
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jsr print_char
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// print_uchar((char)b)
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ldx #b
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jsr print_uchar
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// }
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rts
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}
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// Print a newline
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print_ln: {
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__b1:
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// print_line_cursor + 0x28
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lda #$28
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clc
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adc.z print_line_cursor
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sta.z print_line_cursor
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bcc !+
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inc.z print_line_cursor+1
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!:
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// while (print_line_cursor<print_char_cursor)
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lda.z print_line_cursor+1
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cmp.z print_char_cursor+1
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bcc __b1
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bne !+
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lda.z print_line_cursor
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cmp.z print_char_cursor
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bcc __b1
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!:
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// }
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rts
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}
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// Print a unsigned int as HEX
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// void print_uint(__zp(4) unsigned int w)
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print_uint: {
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.label w = 4
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// print_uchar(BYTE1(w))
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ldx.z w+1
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jsr print_uchar
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// print_uchar(BYTE0(w))
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ldx.z w
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jsr print_uchar
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// }
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rts
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}
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// Print a signed int as HEX
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// void print_sint(__zp(4) int w)
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print_sint: {
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.label w = 4
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// if(w<0)
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lda.z w+1
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bmi __b1
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// print_char(' ')
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lda #' '
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jsr print_char
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__b2:
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// print_uint((unsigned int)w)
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jsr print_uint
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// }
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rts
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__b1:
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// print_char('-')
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lda #'-'
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jsr print_char
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// w = -w
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lda #0
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sec
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sbc.z w
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sta.z w
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lda #0
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sbc.z w+1
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sta.z w+1
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jmp __b2
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}
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// Print a unsigned long as HEX
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// void print_ulong(__zp(8) unsigned long dw)
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print_ulong: {
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.label dw = 8
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// print_uint(WORD1(dw))
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lda.z dw+2
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sta.z print_uint.w
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lda.z dw+3
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sta.z print_uint.w+1
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jsr print_uint
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// print_uint(WORD0(dw))
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lda.z dw
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sta.z print_uint.w
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lda.z dw+1
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sta.z print_uint.w+1
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jsr print_uint
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// }
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rts
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}
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// Print a signed long as HEX
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// void print_slong(__zp(8) long dw)
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print_slong: {
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.label dw = 8
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// if(dw<0)
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lda.z dw+3
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bmi __b1
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// print_char(' ')
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lda #' '
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jsr print_char
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__b2:
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// print_ulong((unsigned long)dw)
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jsr print_ulong
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// }
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rts
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__b1:
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// print_char('-')
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lda #'-'
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jsr print_char
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// dw = -dw
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sec
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lda.z dw
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eor #$ff
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adc #0
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sta.z dw
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lda.z dw+1
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eor #$ff
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adc #0
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sta.z dw+1
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lda.z dw+2
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eor #$ff
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adc #0
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sta.z dw+2
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lda.z dw+3
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eor #$ff
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adc #0
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sta.z dw+3
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jmp __b2
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}
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.segment Data
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print_hextab: .text "0123456789abcdef"
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