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-rw-r--r--ROMs/hello_c.asm308
1 files changed, 154 insertions, 154 deletions
diff --git a/ROMs/hello_c.asm b/ROMs/hello_c.asm
index da648b6..16eb6bc 100644
--- a/ROMs/hello_c.asm
+++ b/ROMs/hello_c.asm
@@ -1,160 +1,160 @@
jmp _main
- .include "ROMs/font.bin"
-_drawChar_int_ch__int_x__int_y__int_color:
- pop V0
- pop [$71FF]
- pop [$7201]
- pop [$7203]
- pop [$7205]
- push V0
+ .include "font.bin"
+_drawChar_int_ch__int_x__int_y__int_color:; int drawChar(int ch, int x, int y, int color)
+ pop V0 ; preserve function return address
+ pop [$71FF] ; param int ch
+ pop [$7201] ; param int x
+ pop [$7203] ; param int y
+ pop [$7205] ; param int color
+ push V0 ; restore function return address
; adjust for jmp instruction
- push $1FFF
- mov 2, V1
- pop V0
- add V0, V1
- mov AX, [$7207]
- push [$71FF]
- mov 8, V1
- pop V0
- mul V0, V1
- mov AX, [$7209]
- mov 0, [$720B]
+ push $1FFF ; left operand
+ mov 2, V1 ; right operand
+ pop V0 ; get left operand back
+ add V0, V1 ; compute addition
+ mov AX, [$7207] ; int fontStart = AX
+ push [$71FF] ; left operand
+ mov 8, V1 ; right operand
+ pop V0 ; get left operand back
+ mul V0, V1 ; compute multiplication
+ mov AX, [$7209] ; int charStart = AX
+ mov 0, [$720B] ; int yOff = 0
_body_1:
- push [$720B]
- mov 8, V1
- pop V0
- lt V0, V1
+ push [$720B] ; left operand
+ mov 8, V1 ; right operand
+ pop V0 ; get left operand back
+ lt V0, V1 ; compute less than check
not LX
bz
- jmp _end_2
- push [$7207]
- push [$7209]
- mov [$720B], V1
- pop V0
- add V0, V1
- mov AX, V1
- pop V0
- mul V1, 1
- add AX, V0
- mov AX, V0
- mov [V0], [$720D]
- mov 0, [$720F]
+ jmp _end_2 ; if for condition fails, jump to end
+ push [$7207] ; store index obj
+ push [$7209] ; left operand
+ mov [$720B], V1 ; right operand
+ pop V0 ; get left operand back
+ add V0, V1 ; compute addition
+ mov AX, V1 ; store indexer
+ pop V0 ; restore index obj
+ mul V1, 1 ; multiply indexer by 1
+ add AX, V0 ; add indexer and index obj
+ mov AX, V0 ; move to general purpose register
+ mov [V0], [$720D] ; int row = [V0]
+ mov 0, [$720F] ; int xOff = 0
_body_3:
- push [$720F]
- mov 8, V1
- pop V0
- lt V0, V1
+ push [$720F] ; left operand
+ mov 8, V1 ; right operand
+ pop V0 ; get left operand back
+ lt V0, V1 ; compute less than check
not LX
bz
- jmp _end_4
- push [$720D]
- push 7
- mov [$720F], V1
- pop V0
- sub V0, V1
- mov AX, V1
- pop V0
- shr V0, V1
- push DX
- mov 1, V1
- pop V0
- and V0, V1
- mov DX, [$7211]
- bz [$7211]
+ jmp _end_4 ; if for condition fails, jump to end
+ push [$720D] ; left operand
+ push 7 ; left operand
+ mov [$720F], V1 ; right operand
+ pop V0 ; get left operand back
+ sub V0, V1 ; compute subtraction
+ mov AX, V1 ; right operand
+ pop V0 ; get left operand back
+ shr V0, V1 ; compute right shift
+ push DX ; left operand
+ mov 1, V1 ; right operand
+ pop V0 ; get left operand back
+ and V0, V1 ; compute and
+ mov DX, [$7211] ; int bit = DX
+ bz [$7211] ; check ternary condition
jmp _then_5
- mov [$7205], V0
+ mov [$7205], V0 ; store ternary fail result
jmp _end_6
_then_5:
- mov 0, V0
+ mov 0, V0 ; store ternary success result
_end_6:
- mov V0, [$7213]
- push [$7213]
- push [$7203]
- mov [$720B], V1
- pop V0
- add V0, V1
- push AX
- push [$7201]
- mov [$720F], V1
- pop V0
- add V0, V1
- push AX
- call _setPixel_int_x__int_y__int_c
- push [$720F]
+ mov V0, [$7213] ; int pix = V0
+ push [$7213] ; arg int c
+ push [$7203] ; left operand
+ mov [$720B], V1 ; right operand
+ pop V0 ; get left operand back
+ add V0, V1 ; compute addition
+ push AX ; arg int y
+ push [$7201] ; left operand
+ mov [$720F], V1 ; right operand
+ pop V0 ; get left operand back
+ add V0, V1 ; compute addition
+ push AX ; arg int x
+ call _setPixel_int_x__int_y__int_c; int setPixel(int x, int y, int c)
+ push [$720F] ; i++
inc [$720F]
pop V0
jmp _body_3
_end_4:
- push [$720B]
+ push [$720B] ; i++
inc [$720B]
pop V0
jmp _body_1
_end_2:
- mov 0, V0
+ mov 0, V0 ; fallback return 0
ret
-_setPixel_int_x__int_y__int_c:
- pop V0
- pop [$7215]
- pop [$7217]
- pop [$7219]
- push V0
- mov $402F, [$721B]
- push [$7217]
- mov 128, V1
- pop V0
- mul V0, V1
- push AX
- mov [$7215], V1
- pop V0
- add V0, V1
- mov AX, [$721D]
- push [$721B]
- mov [$721D], V1
- pop V0
- mul V1, 1
- add AX, V0
- mov AX, V0
- movb [$7219], [V0]
- mov 0, V0
+_setPixel_int_x__int_y__int_c:; int setPixel(int x, int y, int c)
+ pop V0 ; preserve function return address
+ pop [$7215] ; param int x
+ pop [$7217] ; param int y
+ pop [$7219] ; param int c
+ push V0 ; restore function return address
+ mov $402F, [$721B] ; int screenStart = $402F
+ push [$7217] ; left operand
+ mov 128, V1 ; right operand
+ pop V0 ; get left operand back
+ mul V0, V1 ; compute multiplication
+ push AX ; left operand
+ mov [$7215], V1 ; right operand
+ pop V0 ; get left operand back
+ add V0, V1 ; compute addition
+ mov AX, [$721D] ; int i = AX
+ push [$721B] ; store index obj
+ mov [$721D], V1 ; store indexer
+ pop V0 ; restore index obj
+ mul V1, 1 ; multiply indexer by 1
+ add AX, V0 ; add indexer and index obj
+ mov AX, V0 ; move to general purpose register
+ movb [$7219], [V0] ; [V0] = [$7219]
+ mov 0, V0 ; fallback return 0
ret
-_clear_int_c:
- pop V0
- pop [$721F]
- push V0
- mov $402F, [$7221]
- push 64
- mov 128, V1
- pop V0
- mul V0, V1
- mov AX, [$7223]
- mov 0, [$7225]
+_clear_int_c: ; int clear(int c)
+ pop V0 ; preserve function return address
+ pop [$721F] ; param int c
+ push V0 ; restore function return address
+ mov $402F, [$7221] ; int screenStart = $402F
+ push 64 ; left operand
+ mov 128, V1 ; right operand
+ pop V0 ; get left operand back
+ mul V0, V1 ; compute multiplication
+ mov AX, [$7223] ; int screenSize = AX
+ mov 0, [$7225] ; int i = 0
_body_7:
- push [$7225]
- mov [$7223], V1
- pop V0
- lt V0, V1
+ push [$7225] ; left operand
+ mov [$7223], V1 ; right operand
+ pop V0 ; get left operand back
+ lt V0, V1 ; compute less than check
not LX
bz
- jmp _end_8
- push [$7221]
- mov [$7225], V1
- pop V0
- mul V1, 1
- add AX, V0
- mov AX, V0
- movb [$721F], [V0]
- push [$7225]
+ jmp _end_8 ; if for condition fails, jump to end
+ push [$7221] ; store index obj
+ mov [$7225], V1 ; store indexer
+ pop V0 ; restore index obj
+ mul V1, 1 ; multiply indexer by 1
+ add AX, V0 ; add indexer and index obj
+ mov AX, V0 ; move to general purpose register
+ movb [$721F], [V0] ; [V0] = [$721F]
+ push [$7225] ; i++
inc [$7225]
pop V0
jmp _body_7
_end_8:
- mov 0, V0
+ mov 0, V0 ; fallback return 0
ret
-_main:
- mov 1, [$7227]
+_main: ; int main()
+ mov 1, [$7227] ; int color = 1
mov 72, [$722B]
mov 69, [$722D]
mov 76, [$722F]
@@ -167,49 +167,49 @@ _main:
mov 76, [$723D]
mov 68, [$723F]
mov 33, [$7241]
- mov $722B, [$7229]
- mov 12, [$7243]
- push 0
- call _clear_int_c
+ mov $722B, [$7229] ; int text = $722B
+ mov 12, [$7243] ; int len = 12
+ push 0 ; arg int c
+ call _clear_int_c ; int clear(int c)
_body_9:
not 1
bz
- jmp _end_10
- mov 0, [$7245]
+ jmp _end_10 ; if while condition fails, jump to end
+ mov 0, [$7245] ; int i = 0
_body_11:
- push [$7245]
- mov [$7243], V1
- pop V0
- lt V0, V1
+ push [$7245] ; left operand
+ mov [$7243], V1 ; right operand
+ pop V0 ; get left operand back
+ lt V0, V1 ; compute less than check
not LX
bz
- jmp _end_12
- push [$7229]
- mov [$7245], V1
- pop V0
- mul V1, 2
- add AX, V0
- mov AX, V0
- mov [V0], [$7247]
- push [$7227]
- push 0
- push [$7245]
- mov 8, V1
- pop V0
- mul V0, V1
- push AX
- push [$7247]
- call _drawChar_int_ch__int_x__int_y__int_color
- push [$7245]
+ jmp _end_12 ; if for condition fails, jump to end
+ push [$7229] ; store index obj
+ mov [$7245], V1 ; store indexer
+ pop V0 ; restore index obj
+ mul V1, 2 ; multiply indexer by 2
+ add AX, V0 ; add indexer and index obj
+ mov AX, V0 ; move to general purpose register
+ mov [V0], [$7247] ; int ch = [V0]
+ push [$7227] ; arg int color
+ push 0 ; arg int y
+ push [$7245] ; left operand
+ mov 8, V1 ; right operand
+ pop V0 ; get left operand back
+ mul V0, V1 ; compute multiplication
+ push AX ; arg int x
+ push [$7247] ; arg int ch
+ call _drawChar_int_ch__int_x__int_y__int_color; int drawChar(int ch, int x, int y, int color)
+ push [$7245] ; i++
inc [$7245]
pop V0
jmp _body_11
_end_12:
- push [$7227]
+ push [$7227] ; i++
inc [$7227]
pop V0
jmp _body_9
_end_10:
- mov 0, V0
+ mov 0, V0 ; fallback return 0
ret
generated by cgit v1.3.1 (git 2.54.0) at 2026-10-31 18:09:29 +0000