mirror of https://github.com/pfusik/xasm.git
X-Assembler 1.1.
This commit is contained in:
Piotr Fusik
parent
08f8df9f7d
commit
a8c91ef7ef
248
xasm.asm
248
xasm.asm
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@ -166,7 +166,7 @@ gline1: cmp di, offset line+255
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jmp syntax
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eof: inc [eoflag]
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mov [word di+1], 0a0dh
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mov [word di], 0a0dh
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syntax: mov si, offset line
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@ -211,14 +211,24 @@ asilab: push si
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stosw
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pop si
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s_cmd: call spaces
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s_cmd: lodsb
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cmp al, ' '
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je s_cmd
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cmp al, 9
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je s_cmd
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cmp al, 0dh
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jne s_cmd1
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cmp [byte high labvec], 0
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je main
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jmp uneol
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s_cmd1: dec si
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lodsw
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and ax, 0dfdfh
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mov dx, ax
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sta dx
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lodsb
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and al, 0dfh
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mov di, offset comtab
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mov bx, 32*6
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mov bx, 64*6
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sfcmd1: mov ah, al
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mov cx, dx
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sub ah, [di+bx+2]
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@ -232,15 +242,8 @@ sfcmd1: mov ah, al
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mov al, [di+bx+3]
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mov [cod], al
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call [word di+4+bx]
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lodsb
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cmp al, 0dh
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je main
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cmp al, ' '
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je main
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cmp al, 9
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je main
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mov ax, offset e_xtra
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jmp panica
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call linend
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jmp main
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sfcmd2: add di, bx
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cmp di, offset comend
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@ -254,12 +257,6 @@ sfcmd3: shr bx, 1
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mov ax, offset e_inst
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jmp panica
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uneol: mov ax, offset e_uneol
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jmp panica
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ilchar: mov ax, offset e_char
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jmp panica
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filend: mov [eoflag], 0
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cmp [pass], 1
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jnb noforg
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@ -354,25 +351,50 @@ pride1: cdq
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print
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ret
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; Omija spacje i tabulatory
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spaces: lodsb
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cmp al, ' '
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je spaces
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cmp al, 9
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je spaces
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; Pobiera znak (eol=error)
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get: lodsb
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cmp al, 0dh
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je uneol
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ret
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uneol: mov ax, offset e_uneol
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jmp panica
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ilchar: mov ax, offset e_char
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jmp panica
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; Omija spacje i tabulatory
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spaces: call get
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cmp al, ' '
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je space1
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cmp al, 9
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je space1
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mov ax, offset e_spac
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jmp panica
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space1: call get
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cmp al, ' '
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je space1
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cmp al, 9
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je space1
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dec si
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rstret: ret
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; Stwierdza blad, jesli nie spacja, tab i eol
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linend: lodsb
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cmp al, 0dh
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je rstret
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cmp al, ' '
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je rstret
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cmp al, 9
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je rstret
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mov ax, offset e_xtra
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jmp panica
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; Czyta lancuch i zapisuje do [di]
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rstr: lodsb
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rstr: call get
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cmp al, "'"
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jne strer
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push di
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rstr1: lodsb
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cmp al, 0dh
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je uneol
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rstr1: call get
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stosb
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cmp al, "'"
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jne rstr1
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@ -380,7 +402,9 @@ rstr1: lodsb
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cmp al, "'"
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je rstr1
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dec si
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lea cx, [di-1]
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dec di
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mov [byte di], 0
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mov cx, di
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pop di
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sub cx, di
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jnz rstret
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@ -448,13 +472,13 @@ value: mov [val], 0
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valuem: mov [oper], al
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xor dx, dx
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mov ch, -1
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lodsb
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cmp al, 0dh
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je uneol
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call get
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cmp al, '*'
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je valorg
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cmp al, "'"
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je valchr
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cmp al, '^'
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je valreg
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mov bx, 16
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cmp al, '$'
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je rdnum3
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@ -498,9 +522,7 @@ vlabkn: mov dx, [bx+2]
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vlabun: mov [undef], 0ffh
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jmp value1
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valchr: lodsb
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cmp al, 0dh
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je uneol
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valchr: call get
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cmp al, "'"
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jne valch1
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lodsb
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@ -516,6 +538,29 @@ valch1: movzx dx, al
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xor dl, 80h
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jmp value1
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valreg: call get
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cmp al, '4'
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ja ilchar
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sub al, '0'
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jb ilchar
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add al, 0d0h
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mov ah, al
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call get
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cmp al, 'A'
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jb valre1
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and al, 0dfh
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cmp al, 'A'
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jb valre1
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add al, '0'+10-'A'
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valre1: sub al, '0'
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cmp al, 0fh
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ja ilchar
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cmp ah, 0d1h
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jne valre2
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sub ax, 0f0h
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valre2: sta dx
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jmp value1
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valorg: mov dx, [origin]
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jmp value1
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@ -617,8 +662,19 @@ putret: ret
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p_imp = savbyt
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p_ads: call getadr
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mov al, [cod]
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call savbyt
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mov al, 60h
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cmp [cod], 18h
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je p_as1
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mov al, 0e0h
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p_as1: mov [cod], al
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mov al, [amod]
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jmp p_ac1
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p_acc: call getadr
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cmp al, 7
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p_ac1: cmp al, 7
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jne acc1
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dec ax
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mov [amod], al
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@ -721,12 +777,8 @@ toofar: mov ax, offset e_bra
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jmp panica
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p_jsr: call getadr
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and al, 0feh
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mov [amod], al
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cmp al, 2
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jne ilamod
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mov al, 20h
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jmp putcmd
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jmp p_abs
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p_bit: call getadr
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cmp al, 2
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@ -737,14 +789,20 @@ p_bit: call getadr
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mov al, 24h
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jmp putcmd
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p_juc: call getadr
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mov al, [cod]
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mov ah, 3
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call savwor
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jmp p_jp1
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p_jmp: call getadr
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cmp al, 10
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mov al, 6ch
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je putcmd
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and [amod], 0feh
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p_jp1: mov al, 4ch
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p_abs: and [amod], 0feh
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cmp [amod], 2
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jne ilamod
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mov al, 4ch
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jmp putcmd
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p_opt: call getval
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@ -805,10 +863,18 @@ putorg: mov bx, [orgvec]
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tmorgs: mov ax, offset e_orgs
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jmp panica
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valuco: call value
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jc unknow
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call get
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cmp al, ','
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jne badsin
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mov ax, [val]
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ret
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badsin: mov ax, offset e_sin
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jmp panica
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p_dta: call spaces
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dta1: lodsb
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cmp al, 0dh
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je uneol
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dta1: call get
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and al, 0dfh
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mov [cod], al
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cmp al, 'A'
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@ -829,9 +895,65 @@ dtan1: lodsb
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cmp al, '('
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jne mbrack
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dtan2: call value
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dtan2: lodsd
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and eax, 0ffdfdfdfh
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cmp eax, '(NIS'
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jne dtansi
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call valuco
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mov [sinadd], ax
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call valuco
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mov [sinamp], ax
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call value
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jc unknow
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mov ax, [val]
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test ax, ax
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js badsin
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jz badsin
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mov [sinsiz], ax
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mov [sinmin], 0
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dec ax
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mov [sinmax], ax
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call get
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cmp al, ')'
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je presin
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cmp al, ','
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jne badsin
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call valuco
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test ax, ax
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js badsin
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mov [sinmin], ax
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call value
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jc unknow
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mov ax, [val]
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test ax, ax
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js badsin
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cmp ax, [sinmin]
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jb badsin
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mov [sinmax], ax
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lodsb
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cmp al, ')'
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jne mbrack
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presin: finit
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fldpi
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fld st
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faddp st(1), st
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fild [sinsiz]
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fdivp st(1), st
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gensin: fild [sinmin]
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inc [sinmin]
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fmul st, st(1)
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fsin
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fild [sinamp]
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fmulp st(1), st
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fistp [val]
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mov ax, [sinadd]
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add [val], ax
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jmp dtasto
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dtansi: sub si, 4
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call value
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jc dtan3
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cmp [pass], 1
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dtasto: cmp [pass], 1
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jb dtan4
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mov al, [cod]
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cmp al, 'B'
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@ -863,7 +985,10 @@ dtan3: cmp [pass], 1
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dtan4: cmp [cod], 'A'+1
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adc [origin], 1
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dtanx: lodsb
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dtanx: mov ax, [sinmin]
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cmp ax, [sinmax]
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jbe gensin
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lodsb
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cmp al, ','
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je dtan2
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cmp al, ')'
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@ -910,10 +1035,12 @@ dtanxt: lodsb
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p_icl: call spaces
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mov di, offset fname
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call rstr
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mov [byte di], 0
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pop ax
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call linend
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jmp opfile
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p_end: pop ax
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call linend
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jmp filend
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lentab db 1,2,3,2,3,2,3,2,2,2,3
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@ -922,6 +1049,7 @@ srttab db 0ah,0,0eh,6,1eh,16h
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lditab db 0,0,0ch,4,1ch,14h,1ch,14h
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comtab: cmd ADC60p_acc
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cmd ADD18p_ads
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cmd AND20p_acc
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cmd ASL00p_srt
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cmd BCC90p_bra
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@ -952,8 +1080,16 @@ comtab: cmd ADC60p_acc
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cmd INCe0p_srt
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cmd INXe8p_imp
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cmd INYc8p_imp
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cmd JCCb0p_juc
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cmd JCS90p_juc
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cmd JEQd0p_juc
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cmd JMI10p_juc
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cmd JMP4cp_jmp
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cmd JNEf0p_juc
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cmd JPL30p_juc
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cmd JSR20p_jsr
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cmd JVC70p_juc
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cmd JVS50p_juc
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cmd LDAa0p_acc
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cmd LDXa2p_ldi
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cmd LDYa0p_ldi
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@ -977,6 +1113,7 @@ comtab: cmd ADC60p_acc
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cmd STA80p_acc
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cmd STX86p_sti
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cmd STY84p_sti
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cmd SUB38p_ads
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cmd TAXaap_imp
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cmd TAYa8p_imp
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cmd TSXbap_imp
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@ -985,7 +1122,7 @@ comtab: cmd ADC60p_acc
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cmd TYA98p_imp
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comend:
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hello db 'X-Assembler 1.0 by Fox/Taquart',eot
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hello db 'X-Assembler 1.1 by Fox/Taquart',eot
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usgtxt db 'Give a source filename. Default extension is .ASX.',eol
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db 'Destination will have the same name and .COM extension.',eot
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lintxt db ' lines assembled',eot
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@ -1013,6 +1150,8 @@ e_brack db 'Missing bracket',eot
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e_tlab db 'Too many labels',eot
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e_amod db 'Illegal adressing mode',eot
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e_bra db 'Branch too far',eot
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e_sin db 'Bad or missing sinus parameter',eot
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e_spac db 'Space expected',eot
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pass dw 0
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lines dd 0
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@ -1023,6 +1162,11 @@ p1laben dw 0
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pslaben dw -1
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orgvec dw t_org
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eoflag db 0
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sinmin dw 1
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sinmax dw 0
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sinadd dw ?
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sinamp dw ?
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sinsiz dw ?
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ohand dw ?
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errad dw ?
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val dw ?
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