110 lines
3.0 KiB
Plaintext
110 lines
3.0 KiB
Plaintext
ticker 1 : main
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# Main memory structure
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id testing : B = [1, 4, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
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# Operations on memory
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: q(l, v, i)=ifval(l, i, [1...length(l)], v)
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: setlistval(index, v) = B -> q(B, v, index)
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: incx(index, v) = setlistval(index, B[index] + v)
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: ifval(l, index, c, v) = {c = index : v, l[c]}
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# Operations
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: oadd(x, y) = x + y
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: osub(x, y) = x - y
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: odiv(x, y) = x / y
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: omul(x, y) = x * y
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# Instruction implementation
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: ijmp(a, b, c) = ip -> a, jumped -> 1
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: iadd(a, b, t_o) = setlistval(t_o, oadd(B[a], B[b]))
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: isub(a, b, t_o) = setlistval(t_o, osub(B[a], B[b]))
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: idiv(a, b, t_o) = setlistval(t_o, odiv(B[a], B[b]))
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: imul(a, b, t_o) = setlistval(t_o, omul(B[a], B[b]))
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: icmp(a, b, z) = { \
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a = b : equals -> 1 , \
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a > b : greater -> 1 , \
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a < b : less -> 1 \
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}
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: irst(a, b, c) = equals -> 0, greater -> 0, less -> 0
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: ield(addr, b) = setlistval(addr, equals)
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: igld(addr, b) = setlistval(addr, greater)
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: illd(addr, b) = setlistval(addr, less)
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: ibe(addr, b, c) = {equals = 1 : ijmp(addr, 0, 0), jumped -> 1}
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: ibne(addr, b, c) = {equals = 0 : ijmp(addr, 0, 0), jumped -> 1}
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: ibg(addr, b, c) = {greater = 1 : ijmp(addr, 0, 0), jumped -> 1}
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: ibl(addr, b, c) = {less = 1 : ijmp(addr, 0, 0), jumped -> 1}
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: isto(v, addr) = setlistval(addr, v)
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# registers
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# instruction pointer
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: ip = 1
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# is the result of icmp equal?
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: equals = 0
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# ditto for greater than
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: greater = 0
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# ditto for less than
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: less = 0
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# instruction loading areas
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: inst = 0
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# next three values after the instruction
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: paramone = 0
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: paramtwo = 0
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: paramthree = 0
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# main execution flows
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: load(addr) = jumped -> 0, inst -> B[addr], \
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paramone -> B[addr + 1], \
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paramtwo -> B[addr + 2], \
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paramthree -> B[addr + 3]
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: exec = { \
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inst = sto : isto(paramone, paramtwo), \
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inst = add : iadd(paramone, paramtwo, paramthree), \
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inst = cmp : icmp(paramone, paramtwo, paramthree), \
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inst = eld : ield(paramone, paramtwo), \
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inst = gld : igld(paramone, paramtwo), \
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inst = lld : illd(paramone, paramtwo), \
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inst = jmp : ijmp(paramone, paramtwo, paramthree), \
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inst = be : ibe(paramone, paramtwo, paramthree), \
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inst = bne : ibne(paramone, paramtwo, paramthree), \
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inst = bg : ibg(paramone, paramtwo, paramthree), \
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inst = bl : ibl(paramone, paramtwo, paramthree), \
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inst = sub : isub(paramone, paramtwo, paramthree), \
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inst = mul : imul(paramone, paramtwo, paramthree), \
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inst = div : idiv(paramone, paramtwo, paramthree) \
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}
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: incip = {jumped = 0 : ip -> ip + instwidth[inst] + 1}
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# execution occurs here
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: execution = 0
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: jumped = 0
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: loop = {execution = 0 : execution -> 1, execution = 1 : execution -> 2, execution = 2 : execution -> 0}
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: loopaction = {execution = 0 : load(ip), execution = 1 : exec, execution = 2 : incip}
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: main = loopaction, loop
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: sto = 1
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: add = 2
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: cmp = 3
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: eld = 4
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: gld = 5
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: lld = 6
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: jmp = 7
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: be = 8
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: bne = 9
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: bg = 10
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: bl = 11
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: sub = 12
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: mul = 13
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: div = 14
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: rst = 15
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: instwidth = [2,3,1,1,1,1,1,1,1,1,3,3,3,3,0]
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