zasm: simplify (IX/Y+d) handling
We now require less special handling.
This commit is contained in:
Virgil Dupras
parent
68ef686c3c
commit
d9d6093287
@ -2,7 +2,7 @@
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; Number of rows in the argspec table
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.equ ARGSPEC_TBL_CNT 33
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; Number of rows in the primary instructions table
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.equ INSTR_TBL_CNT 162
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.equ INSTR_TBL_CNT 150
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; size in bytes of each row in the primary instructions table
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.equ INSTR_TBL_ROWSIZE 6
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; Instruction IDs They correspond to the index of the table in instrNames
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@ -84,12 +84,18 @@ checkNOrM:
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cp 'M'
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ret
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; Checks whether A is 'n', 'm', 'x' or 'y'
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checknmxy:
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; Checks whether A is 'n', 'm'
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checknm:
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cp 'n'
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ret z
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cp 'm'
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ret
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checklxy:
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cp 'l'
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ret z
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; Checks whether A is 'x', 'y'
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checkxy:
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cp 'x'
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ret z
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cp 'y'
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@ -330,6 +336,7 @@ findInGroup:
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ret
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; Compare argspec from instruction table in A with argument in (HL).
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; IX must point to argspec row.
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; For constant args, it's easy: if A == (HL), it's a success.
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; If it's not this, then we check if it's a numerical arg.
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; If A is a group ID, we do something else: we check that (HL) exists in the
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@ -342,11 +349,21 @@ matchArg:
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; not an exact match. Before we continue: is A zero? Because if it is,
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; we have to stop right here: no match possible.
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or a
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jr nz, .skip ; not a zero, we can continue
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jr nz, .skip1 ; not a zero, we can continue
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; zero, stop here
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cp 1 ; unset Z
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ret
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.skip:
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.skip1:
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; If our argspec is 'l', then we also match 'x' and 'y'
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cp 'l'
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jr nz, .skip2
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; Does it accept IX and IY?
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bit 4, (ix+3)
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ld a, (hl)
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jp nz, checkxy ; bit set: our result is checkxy
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; doesn't accept? then we don't match
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jp unsetZ
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.skip2:
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; Alright, let's start with a special case. Is it part of the special
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; "BIT" group, 0xc? If yes, we actually expect a number, which will
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; then be ORed like a regular group index.
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@ -429,78 +446,19 @@ matchPrimaryRow:
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; Handle like a regular "JP (IX+d)" except that we refuse any displacement: if
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; a displacement is specified, we error out.
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handleJPIX:
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ld a, 0xdd
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jr handleJPIXY
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handleJPIY:
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ld a, 0xfd
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handleJPIXY:
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ld (INS_UPCODE), a
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ld a, (INS_CURARG1+1)
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cp 0 ; numerical argument *must* be zero
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or a ; numerical argument *must* be zero
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jr nz, .error
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; ok, we're good
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ld a, 0xe9 ; second upcode
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ld (INS_UPCODE+1), a
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ld c, 2
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ld (INS_UPCODE), a
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ld c, 1
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ret
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.error:
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ld c, 0
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ret
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; Handle the first argument of BIT. Sets Z if first argument is valid, unset it
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; if there's an error.
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handleBIT:
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ld a, (INS_CURARG1+1)
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cp 8
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jr nc, .error ; >= 8? error
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; We're good
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cp a ; ensure Z
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ret
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.error:
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ld c, 0
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jp unsetZ
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handleBITIX:
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ld a, 0xdd
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ld b, 0b01000110
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jr _handleBITIXY
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handleBITIY:
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ld a, 0xfd
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ld b, 0b01000110
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jr _handleBITIXY
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handleSETIX:
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ld a, 0xdd
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ld b, 0b11000110
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jr _handleBITIXY
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handleSETIY:
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ld a, 0xfd
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ld b, 0b11000110
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jr _handleBITIXY
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handleRESIX:
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ld a, 0xdd
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ld b, 0b10000110
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jr _handleBITIXY
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handleRESIY:
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ld a, 0xfd
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ld b, 0b10000110
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_handleBITIXY:
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ld (INS_UPCODE), a ; first upcode
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call handleBIT
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ret nz ; error
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ld a, 0xcb ; 2nd upcode
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ld (INS_UPCODE+1), a
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ld a, (INS_CURARG2+1) ; IXY displacement
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ld (INS_UPCODE+2), a
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ld a, (INS_CURARG1+1) ; 0-7
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rla
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rla
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rla
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or b ; 4th upcode
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ld (INS_UPCODE+3), a
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ld c, 4
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ret
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handleBITR:
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ld b, 0b01000000
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jr _handleBITR
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@ -510,8 +468,6 @@ handleSETR:
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handleRESR:
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ld b, 0b10000000
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_handleBITR:
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call handleBIT
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ret nz ; error
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; get group value
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ld a, (INS_CURARG2+1) ; group value
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ld c, a
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@ -520,7 +476,7 @@ _handleBITR:
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ld (INS_UPCODE), a
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; get bit value
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ld a, (INS_CURARG1+1) ; 0-7
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rla
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rlca ; clears cary if any
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rla
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rla
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; Now we have group value in stack, bit value in A (properly shifted)
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@ -531,6 +487,28 @@ _handleBITR:
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ld c, 2
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ret
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handleBITIXY:
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ld b, 0b01000110
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jr _handleBITIXY
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handleSETIXY:
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ld b, 0b11000110
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jr _handleBITIXY
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handleRESIXY:
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ld b, 0b10000110
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_handleBITIXY:
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ld a, 0xcb ; 1st upcode
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ld (INS_UPCODE), a
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ld a, (INS_CURARG2+1) ; IXY displacement
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ld (INS_UPCODE+1), a
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ld a, (INS_CURARG1+1) ; 0-7
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rlca ; clears cary if any
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rla
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rla
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or b ; 4th upcode
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ld (INS_UPCODE+2), a
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ld c, 3
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ret
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handleIM:
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ld a, (INS_CURARG1+1)
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cp 0
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@ -557,58 +535,40 @@ handleIM:
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ld c, 2
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ret
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handleLDIXn:
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ld a, 0xdd
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jr handleLDIXYn
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handleLDIYn:
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ld a, 0xfd
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handleLDIXYn:
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ld (INS_UPCODE), a
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ld a, 0x36 ; second upcode
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ld (INS_UPCODE+1), a
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ld (INS_UPCODE), a
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ld a, (INS_CURARG1+1) ; IXY displacement
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ld (INS_UPCODE+2), a
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ld (INS_UPCODE+1), a
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ld a, (INS_CURARG2+1) ; N
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ld (INS_UPCODE+3), a
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ld c, 4
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ld (INS_UPCODE+2), a
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ld c, 3
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ret
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handleLDIXr:
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ld a, 0xdd
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jr handleLDIXYr
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handleLDIYr:
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ld a, 0xfd
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handleLDIXYr:
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ld (INS_UPCODE), a
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ld a, (INS_CURARG2+1) ; group value
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or 0b01110000 ; second upcode
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ld (INS_UPCODE+1), a
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ld (INS_UPCODE), a
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ld a, (INS_CURARG1+1) ; IXY displacement
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ld (INS_UPCODE+2), a
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ld c, 3
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ld (INS_UPCODE+1), a
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ld c, 2
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ret
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handleLDrIX:
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ld a, 0xdd
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jr handleLDrIXY
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handleLDrIY:
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ld a, 0xfd
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handleLDrIXY:
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ld (INS_UPCODE), a
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ld a, (INS_CURARG1+1) ; group value
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rla \ rla \ rla
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rlca \ rla \ rla
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or 0b01000110 ; second upcode
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ld (INS_UPCODE+1), a
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ld (INS_UPCODE), a
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ld a, (INS_CURARG2+1) ; IXY displacement
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ld (INS_UPCODE+2), a
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ld c, 3
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ld (INS_UPCODE+1), a
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ld c, 2
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ret
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handleLDrr:
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; first argument is displaced by 3 bits, second argument is not
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; displaced and we or that with a leading 0b01000000
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ld a, (INS_CURARG1+1) ; group value
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rla
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rlca
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rla
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rla
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ld c, a ; store it
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@ -630,6 +590,39 @@ spitUpcode:
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; First, let's go in IX mode. It's easier to deal with offsets here.
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push de \ pop ix
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; before we begin, are we in a 'l' argspec? Is it flagged for IX/IY
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; acceptance? If yes, a 'x' or 'y' instruction? Check this on both
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; args and if we detect a 'x' or 'y', things are *always* the same:
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; the upcode is exactly the same as its (HL) counterpart except that
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; it is preceeded by 0xdd or 0xfd. If we're 'x' or 'y', then it means
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; that we've already been matched to a 'l' argspec, so after spitting
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; 0xdd or 0xfd, we can continue as normal.
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ld a, (ix+1)
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call checklxy
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jr z, .isl
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ld a, (ix+2)
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call checklxy
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jr nz, .begin ; no point in checking further.
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.isl:
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ld a, (INS_CURARG1)
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cp 'x'
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jr z, .isx
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cp 'y'
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jr z, .isy
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ld a, (INS_CURARG2)
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cp 'x'
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jr z, .isx
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cp 'y'
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jr z, .isy
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jr .begin
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.isx:
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ld a, 0xdd
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call ioPutB
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jr .begin
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.isy:
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ld a, 0xfd
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call ioPutB
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.begin:
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; Are we a "special instruction"?
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bit 5, (ix+3)
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jr z, .normalInstr ; not set: normal instruction
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@ -644,10 +637,9 @@ spitUpcode:
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; we begin by writing our "base upcode", which can be one or two bytes
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ld a, (ix+4) ; first upcode
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ld (INS_UPCODE), a
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ld de, INS_UPCODE ; from this point, DE points to "where we are"
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; in terms of upcode writing.
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inc de ; make DE point to where we should write next.
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; from this point, DE points to "where we are" in terms of upcode
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; writing.
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ld de, INS_UPCODE+1
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ld c, 1 ; C holds our upcode count
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; Now, let's determine if we have one or two upcode. As a general rule,
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@ -718,13 +710,19 @@ spitUpcode:
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ld hl, INS_CURARG1
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call checkNOrM
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jr z, .withWord
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call checknmxy
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call checknm
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jr z, .withByte
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ld a, (INS_CURARG1)
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call checkxy
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jr z, .withByte
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ld a, (ix+2) ; second argspec
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ld hl, INS_CURARG2
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call checkNOrM
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jr z, .withWord
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call checknmxy
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call checknm
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jr z, .withByte
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ld a, (INS_CURARG2)
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call checkxy
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jr z, .withByte
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; nope, no number, alright, we're finished here
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jr .writeIO
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@ -801,6 +799,8 @@ spitUpcode:
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; to writeIO
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.writeIO:
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; Let's write INS_UPCODE to IO
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dec c \ inc c ; is C zero?
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jr z, .numberTruncated
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ld b, c ; save output byte count
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ld hl, INS_UPCODE
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.loopWrite:
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@ -809,7 +809,7 @@ spitUpcode:
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jr nz, .ioError
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inc hl
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djnz .loopWrite
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; Z is set by INC HL
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cp a ; ensure Z
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jr .end
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.numberTruncated:
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; Z already unset
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@ -1066,48 +1066,41 @@ instrNames:
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; Bit 5: Indicates that this row is handled very specially: the next two bytes
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; aren't upcode bytes, but a routine address to call to handle this case with
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; custom code.
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; Bit 4: When in an 'l' argspec, this means "I accept IX and IY variants".
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instrTBl:
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.db I_ADC, 'A', 'l', 0, 0x8e , 0 ; ADC A, (HL)
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.db I_ADC, 'A', 0xb, 0, 0b10001000 , 0 ; ADC A, r
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.db I_ADC, 'A', 'n', 0, 0xce , 0 ; ADC A, n
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.db I_ADC, 'h', 0x3, 0x44, 0xed, 0b01001010 ; ADC HL, ss
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.db I_ADD, 'A', 'l', 0, 0x86 , 0 ; ADD A, (HL)
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.db I_ADD, 'A', 'l', 0x10, 0x86 , 0 ; ADD A, (HL) + (IX/Y)
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.db I_ADD, 'A', 0xb, 0, 0b10000000 , 0 ; ADD A, r
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.db I_ADD, 'A', 'n', 0, 0xc6 , 0 ; ADD A, n
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.db I_ADD, 'h', 0x3, 4, 0b00001001 , 0 ; ADD HL, ss
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.db I_ADD, 'X', 0x4, 0x44, 0xdd, 0b00001001 ; ADD IX, pp
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.db I_ADD, 'Y', 0x5, 0x44, 0xfd, 0b00001001 ; ADD IY, rr
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.db I_ADD, 'A', 'x', 0, 0xdd, 0x86 ; ADD A, (IX+d)
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.db I_ADD, 'A', 'y', 0, 0xfd, 0x86 ; ADD A, (IY+d)
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.db I_AND, 'l', 0, 0, 0xa6 , 0 ; AND (HL)
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.db I_AND, 'l', 0, 0x10, 0xa6 , 0 ; AND (HL) + (IX/Y)
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.db I_AND, 0xb, 0, 0, 0b10100000 , 0 ; AND r
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.db I_AND, 'n', 0, 0, 0xe6 , 0 ; AND n
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.db I_AND, 'x', 0, 0, 0xdd, 0xa6 ; AND (IX+d)
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.db I_AND, 'y', 0, 0, 0xfd, 0xa6 ; AND (IY+d)
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.db I_BIT, 0xc, 'x', 0x20 \ .dw handleBITIXY ; BIT b, (IX+d)
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.db I_BIT, 0xc, 'y', 0x20 \ .dw handleBITIXY ; BIT b, (IY+d)
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.db I_BIT, 0xc, 'l', 0x43, 0xcb, 0b01000110 ; BIT b, (HL)
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.db I_BIT, 'n', 'x', 0x20 \ .dw handleBITIX ; BIT b, (IX+d)
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.db I_BIT, 'n', 'y', 0x20 \ .dw handleBITIY ; BIT b, (IY+d)
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.db I_BIT, 'n', 0xb, 0x20 \ .dw handleBITR ; BIT b, r
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.db I_CALL,0xa, 'N', 3, 0b11000100 , 0 ; CALL cc, NN
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.db I_CALL,'N', 0, 0, 0xcd , 0 ; CALL NN
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.db I_CCF, 0, 0, 0, 0x3f , 0 ; CCF
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.db I_CP, 'l', 0, 0, 0xbe , 0 ; CP (HL)
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.db I_CP, 'l', 0, 0x10, 0xbe , 0 ; CP (HL) + (IX/Y)
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.db I_CP, 0xb, 0, 0, 0b10111000 , 0 ; CP r
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.db I_CP, 'n', 0, 0, 0xfe , 0 ; CP n
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.db I_CP, 'x', 0, 0, 0xdd, 0xbe ; CP (IX+d)
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.db I_CP, 'y', 0, 0, 0xfd, 0xbe ; CP (IY+d)
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.db I_CPD, 0, 0, 0, 0xed, 0xa9 ; CPD
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.db I_CPDR,0, 0, 0, 0xed, 0xb9 ; CPDR
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.db I_CPI, 0, 0, 0, 0xed, 0xa1 ; CPI
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.db I_CPIR,0, 0, 0, 0xed, 0xb1 ; CPIR
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.db I_CPL, 0, 0, 0, 0x2f , 0 ; CPL
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.db I_DAA, 0, 0, 0, 0x27 , 0 ; DAA
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.db I_DEC, 'l', 0, 0, 0x35 , 0 ; DEC (HL)
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.db I_DEC, 'l', 0, 0x10, 0x35 , 0 ; DEC (HL) + (IX/Y)
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.db I_DEC, 'X', 0, 0, 0xdd, 0x2b ; DEC IX
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.db I_DEC, 'x', 0, 0, 0xdd, 0x35 ; DEC (IX+d)
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.db I_DEC, 'Y', 0, 0, 0xfd, 0x2b ; DEC IY
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.db I_DEC, 'y', 0, 0, 0xfd, 0x35 ; DEC (IY+d)
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.db I_DEC, 0xb, 0, 3, 0b00000101 , 0 ; DEC r
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.db I_DEC, 0x3, 0, 4, 0b00001011 , 0 ; DEC ss
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.db I_DI, 0, 0, 0, 0xf3 , 0 ; DI
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@ -1123,22 +1116,20 @@ instrTBl:
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.db I_IM, 'n', 0, 0x20 \ .dw handleIM ; IM {0,1,2}
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.db I_IN, 'A', 'm', 0, 0xdb , 0 ; IN A, (n)
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.db I_IN, 0xb, 'k', 0x43, 0xed, 0b01000000 ; IN r, (C)
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.db I_INC, 'l', 0, 0, 0x34 , 0 ; INC (HL)
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.db I_INC, 'l', 0, 0x10, 0x34 , 0 ; INC (HL) + (IX/Y)
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.db I_INC, 'X', 0, 0, 0xdd , 0x23 ; INC IX
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.db I_INC, 'x', 0, 0, 0xdd , 0x34 ; INC (IX+d)
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.db I_INC, 'Y', 0, 0, 0xfd , 0x23 ; INC IY
|
||||
.db I_INC, 'y', 0, 0, 0xfd , 0x34 ; INC (IY+d)
|
||||
.db I_INC, 0xb, 0, 3, 0b00000100 , 0 ; INC r
|
||||
.db I_INC, 0x3, 0, 4, 0b00000011 , 0 ; INC ss
|
||||
.db I_IND, 0, 0, 0, 0xed, 0xaa ; IND
|
||||
.db I_INDR,0, 0, 0, 0xed, 0xba ; INDR
|
||||
.db I_INI, 0, 0, 0, 0xed, 0xa2 ; INI
|
||||
.db I_INIR,0, 0, 0, 0xed, 0xb2 ; INIR
|
||||
.db I_JP, 'x', 0, 0x20 \ .dw handleJPIXY ; JP (IX)
|
||||
.db I_JP, 'y', 0, 0x20 \ .dw handleJPIXY ; JP (IY)
|
||||
.db I_JP, 'l', 0, 0, 0xe9 , 0 ; JP (HL)
|
||||
.db I_JP, 0xa, 'N', 3, 0b11000010 , 0 ; JP cc, NN
|
||||
.db I_JP, 'N', 0, 0, 0xc3 , 0 ; JP NN
|
||||
.db I_JP, 'x', 0, 0x20 \ .dw handleJPIX ; JP (IX)
|
||||
.db I_JP, 'y', 0, 0x20 \ .dw handleJPIY ; JP (IY)
|
||||
.db I_JR, 'n', 0, 0x80, 0x18 , 0 ; JR e
|
||||
.db I_JR, 'C', 'n', 0x80, 0x38 , 0 ; JR C, e
|
||||
.db I_JR, '=', 'n', 0x80, 0x30 , 0 ; JR NC, e
|
||||
@ -1171,23 +1162,21 @@ instrTBl:
|
||||
.db I_LD, 'Y', 'M', 0, 0xfd, 0x2a ; LD IY, (NN)
|
||||
.db I_LD, 'M', 0x3, 0x44, 0xed, 0b01000011 ; LD (NN), dd
|
||||
.db I_LD, 0x3, 'M', 0x44, 0xed, 0b01001011 ; LD dd, (NN)
|
||||
.db I_LD, 'x', 'n', 0x20 \ .dw handleLDIXn ; LD (IX+d), n
|
||||
.db I_LD, 'y', 'n', 0x20 \ .dw handleLDIYn ; LD (IY+d), n
|
||||
.db I_LD, 'x', 0xb, 0x20 \ .dw handleLDIXr ; LD (IX+d), r
|
||||
.db I_LD, 'y', 0xb, 0x20 \ .dw handleLDIYr ; LD (IY+d), r
|
||||
.db I_LD, 0xb, 'x', 0x20 \ .dw handleLDrIX ; LD r, (IX+d)
|
||||
.db I_LD, 0xb, 'y', 0x20 \ .dw handleLDrIY ; LD r, (IY+d)
|
||||
.db I_LD, 'x', 'n', 0x20 \ .dw handleLDIXYn ; LD (IX+d), n
|
||||
.db I_LD, 'y', 'n', 0x20 \ .dw handleLDIXYn ; LD (IY+d), n
|
||||
.db I_LD, 'x', 0xb, 0x20 \ .dw handleLDIXYr ; LD (IX+d), r
|
||||
.db I_LD, 'y', 0xb, 0x20 \ .dw handleLDIXYr ; LD (IY+d), r
|
||||
.db I_LD, 0xb, 'x', 0x20 \ .dw handleLDrIXY ; LD r, (IX+d)
|
||||
.db I_LD, 0xb, 'y', 0x20 \ .dw handleLDrIXY ; LD r, (IY+d)
|
||||
.db I_LDD, 0, 0, 0, 0xed, 0xa8 ; LDD
|
||||
.db I_LDDR,0, 0, 0, 0xed, 0xb8 ; LDDR
|
||||
.db I_LDI, 0, 0, 0, 0xed, 0xa0 ; LDI
|
||||
.db I_LDIR,0, 0, 0, 0xed, 0xb0 ; LDIR
|
||||
.db I_NEG, 0, 0, 0, 0xed, 0x44 ; NEG
|
||||
.db I_NOP, 0, 0, 0, 0x00 , 0 ; NOP
|
||||
.db I_OR, 'l', 0, 0, 0xb6 , 0 ; OR (HL)
|
||||
.db I_OR, 'l', 0, 0x10, 0xb6 , 0 ; OR (HL) + (IX/Y)
|
||||
.db I_OR, 0xb, 0, 0, 0b10110000 , 0 ; OR r
|
||||
.db I_OR, 'n', 0, 0, 0xf6 , 0 ; OR n
|
||||
.db I_OR, 'x', 0, 0, 0xdd, 0xb6 ; OR (IX+d)
|
||||
.db I_OR, 'y', 0, 0, 0xfd, 0xb6 ; OR (IY+d)
|
||||
.db I_OTDR,0, 0, 0, 0xed, 0xbb ; OTDR
|
||||
.db I_OTIR,0, 0, 0, 0xed, 0xb3 ; OTIR
|
||||
.db I_OUT, 'm', 'A', 0, 0xd3 , 0 ; OUT (n), A
|
||||
@ -1198,9 +1187,9 @@ instrTBl:
|
||||
.db I_PUSH,'X', 0, 0, 0xdd, 0xe5 ; PUSH IX
|
||||
.db I_PUSH,'Y', 0, 0, 0xfd, 0xe5 ; PUSH IY
|
||||
.db I_PUSH,0x1, 0, 4, 0b11000101 , 0 ; PUSH qq
|
||||
.db I_RES, 0xc, 'l', 0x43, 0xcb, 0b10000110 ; RES b, (HL)
|
||||
.db I_RES, 'n', 'x', 0x20 \ .dw handleRESIX ; RES b, (IX+d)
|
||||
.db I_RES, 'n', 'y', 0x20 \ .dw handleRESIY ; RES b, (IY+d)
|
||||
.db I_RES, 0xc, 'x', 0x20 \ .dw handleRESIXY ; RES b, (IX+d)
|
||||
.db I_RES, 0xc, 'y', 0x20 \ .dw handleRESIXY ; RES b, (IY+d)
|
||||
.db I_RES, 0xc, 'l', 0x53, 0xcb, 0b10000110 ; RES b, (HL) + (IX/Y)
|
||||
.db I_RES, 'n', 0xb, 0x20 \ .dw handleRESR ; RES b, r
|
||||
.db I_RET, 0, 0, 0, 0xc9 , 0 ; RET
|
||||
.db I_RET, 0xa, 0, 3, 0b11000000 , 0 ; RET cc
|
||||
@ -1218,9 +1207,9 @@ instrTBl:
|
||||
.db I_SBC, 'A', 0xb, 0, 0b10011000 , 0 ; SBC A, r
|
||||
.db I_SBC,'h',0x3,0x44, 0xed, 0b01000010 ; SBC HL, ss
|
||||
.db I_SCF, 0, 0, 0, 0x37 , 0 ; SCF
|
||||
.db I_SET, 0xc, 'l', 0x43, 0xcb, 0b11000110 ; SET b, (HL)
|
||||
.db I_SET, 'n', 'x', 0x20 \ .dw handleSETIX ; SET b, (IX+d)
|
||||
.db I_SET, 'n', 'y', 0x20 \ .dw handleSETIY ; SET b, (IY+d)
|
||||
.db I_SET, 0xc, 'x', 0x20 \ .dw handleSETIXY ; SET b, (IX+d)
|
||||
.db I_SET, 0xc, 'y', 0x20 \ .dw handleSETIXY ; SET b, (IY+d)
|
||||
.db I_SET, 0xc, 'l', 0x53, 0xcb, 0b11000110 ; SET b, (HL) + (IX/Y)
|
||||
.db I_SET, 'n', 0xb, 0x20 \ .dw handleSETR ; SET b, r
|
||||
.db I_SLA, 0xb, 0,0x40, 0xcb, 0b00100000 ; SLA r
|
||||
.db I_SRL, 0xb, 0,0x40, 0xcb, 0b00111000 ; SRL r
|
||||
|
||||
@ -142,19 +142,22 @@ ioPutBack:
|
||||
ret
|
||||
|
||||
ioPutB:
|
||||
push hl
|
||||
push hl ; --> lvl 1
|
||||
ld hl, (IO_PC)
|
||||
inc hl
|
||||
ld (IO_PC), hl
|
||||
pop hl
|
||||
push af
|
||||
pop hl ; <-- lvl 1
|
||||
push af ; --> lvl 1
|
||||
call zasmIsFirstPass
|
||||
jr z, .skip
|
||||
pop af
|
||||
pop af ; <-- lvl 1
|
||||
push ix ; --> lvl 1
|
||||
ld ix, IO_OUT_BLK
|
||||
jp _blkPutB
|
||||
call _blkPutB
|
||||
pop ix ; <-- lvl 1
|
||||
ret
|
||||
.skip:
|
||||
pop af
|
||||
pop af ; <-- lvl 1
|
||||
cp a ; ensure Z
|
||||
ret
|
||||
|
||||
|
||||
177
tools/tests/unit/test_z_instr.asm
Normal file
177
tools/tests/unit/test_z_instr.asm
Normal file
@ -0,0 +1,177 @@
|
||||
jp runTests
|
||||
|
||||
.inc "err.h"
|
||||
.inc "core.asm"
|
||||
.inc "parse.asm"
|
||||
.inc "zasm/const.asm"
|
||||
.inc "lib/util.asm"
|
||||
.inc "zasm/util.asm"
|
||||
.inc "lib/parse.asm"
|
||||
.inc "zasm/parse.asm"
|
||||
.inc "zasm/expr.asm"
|
||||
.equ INS_RAMSTART RAMSTART
|
||||
.inc "zasm/instr.asm"
|
||||
|
||||
zasmGetPC:
|
||||
ret
|
||||
|
||||
zasmIsFirstPass:
|
||||
jp unsetZ
|
||||
|
||||
readWord:
|
||||
readComma:
|
||||
symFindVal:
|
||||
xor a
|
||||
ret
|
||||
|
||||
ioPutB:
|
||||
push hl
|
||||
ld hl, SPITBOWL
|
||||
push af
|
||||
ld a, (SPITCNT)
|
||||
call addHL
|
||||
inc a
|
||||
ld (SPITCNT), a
|
||||
pop af
|
||||
ld (hl), a
|
||||
pop hl
|
||||
cp a
|
||||
ret
|
||||
|
||||
runTests:
|
||||
call testMatchArg
|
||||
call testSpitUpcode
|
||||
xor a
|
||||
halt
|
||||
|
||||
testSpitUpcode:
|
||||
ld ix, .t1
|
||||
call .test
|
||||
ld ix, .t2
|
||||
call .test
|
||||
ld ix, .t3
|
||||
call .test
|
||||
ld ix, .t4
|
||||
call .test
|
||||
ld ix, .t5
|
||||
call .test
|
||||
ret
|
||||
|
||||
.test:
|
||||
; init spitbowl
|
||||
xor a
|
||||
ld (SPITCNT), a
|
||||
ld (SPITBOWL), a
|
||||
ld (SPITBOWL+1), a
|
||||
ld (SPITBOWL+2), a
|
||||
ld (SPITBOWL+3), a
|
||||
push ix \ pop de
|
||||
call intoDE
|
||||
ld a, (ix+2)
|
||||
ld (INS_CURARG1), a
|
||||
ld a, (ix+3)
|
||||
ld (INS_CURARG1+1), a
|
||||
ld a, (ix+4)
|
||||
ld (INS_CURARG1+2), a
|
||||
ld a, (ix+5)
|
||||
ld (INS_CURARG2), a
|
||||
ld a, (ix+6)
|
||||
ld (INS_CURARG2+1), a
|
||||
ld a, (ix+7)
|
||||
ld (INS_CURARG2+2), a
|
||||
call spitUpcode
|
||||
jp nz, fail
|
||||
ld a, (SPITCNT)
|
||||
cp (ix+8)
|
||||
jp nz, fail
|
||||
ld a, (SPITBOWL)
|
||||
cp (ix+9)
|
||||
jp nz, fail
|
||||
ld a, (SPITBOWL+1)
|
||||
cp (ix+10)
|
||||
jp nz, fail
|
||||
ld a, (SPITBOWL+2)
|
||||
cp (ix+11)
|
||||
jp nz, fail
|
||||
ld a, (SPITBOWL+3)
|
||||
cp (ix+12)
|
||||
jp nz, fail
|
||||
jp nexttest
|
||||
|
||||
; Test data is a argspec pointer in instrTBl followed by 2*3 bytes of CURARG
|
||||
; followed by the expected spit, 1 byte cnt + 4 bytes spits.
|
||||
.t1:
|
||||
.dw instrTBl+19*6 ; CCF
|
||||
.db 0, 0, 0
|
||||
.db 0, 0, 0
|
||||
.db 1, 0x3f, 0, 0, 0
|
||||
.t2:
|
||||
.dw instrTBl+10*6 ; AND (IX+0x42)
|
||||
.db 'x', 0x42, 0
|
||||
.db 0, 0, 0
|
||||
.db 3, 0xdd, 0xa6, 0x42, 0
|
||||
.t3:
|
||||
.dw instrTBl+13*6 ; BIT 4, (IX+3)
|
||||
.db 'N', 4, 0
|
||||
.db 'x', 3, 0
|
||||
.db 4, 0xdd, 0xcb, 0x03, 0x66
|
||||
.t4:
|
||||
.dw instrTBl+20*6 ; CP (IX+5)
|
||||
.db 'x', 5, 0
|
||||
.db 0, 0, 0
|
||||
.db 3, 0xdd, 0xbe, 0x05, 0
|
||||
.t5:
|
||||
.dw instrTBl+4*6 ; ADD A, (IX+5)
|
||||
.db 'A', 0, 0
|
||||
.db 'x', 5, 0
|
||||
.db 3, 0xdd, 0x86, 0x05, 0
|
||||
|
||||
testMatchArg:
|
||||
ld iy, .t1
|
||||
call .test
|
||||
ret
|
||||
|
||||
.test:
|
||||
ld hl, SPITBOWL
|
||||
ld a, (iy+2)
|
||||
ld (hl), a
|
||||
push iy \ pop de
|
||||
call intoDE
|
||||
push de \ pop ix
|
||||
ld a, (ix+1)
|
||||
call matchArg
|
||||
jp nz, fail
|
||||
ld a, (iy+3)
|
||||
ld (hl), a
|
||||
ld a, (ix+2)
|
||||
call matchArg
|
||||
jp nz, fail
|
||||
jp nexttest
|
||||
|
||||
; Test data is argspec pointer followed by two bytes: first bytes of our two
|
||||
; CURARG.
|
||||
.t1:
|
||||
.dw instrTBl+4*6 ; ADD A, (IX)
|
||||
.db 'A', 'x'
|
||||
|
||||
nexttest:
|
||||
ld a, (testNum)
|
||||
inc a
|
||||
ld (testNum), a
|
||||
ret
|
||||
|
||||
fail:
|
||||
ld a, (testNum)
|
||||
halt
|
||||
|
||||
testNum: .db 1
|
||||
|
||||
SPITCNT:
|
||||
.db 0
|
||||
SPITBOWL:
|
||||
.db 0, 0, 0, 0
|
||||
|
||||
DIREC_LASTVAL:
|
||||
.db 0, 0
|
||||
|
||||
RAMSTART:
|
||||
Loading…
Reference in New Issue
Block a user