| effect (T.CALL _) = true
| effect (T.BINOP(_, a, b)) = (effect a) orelse (effect b)
| effect (T.UNOP (_, a)) = effect a
+ | effect (T.MEMORY m) = true
+ | effect (T.ALLOC(_)) = true
| effect _ = false
(* hasfixed : T.exp -> bool
| hasfixed (T.CALL _) = true
| hasfixed (T.BINOP(_, a, b)) = (hasfixed a) orelse (hasfixed b)
| hasfixed (T.UNOP (_, a)) = hasfixed a
+ | hasfixed (T.ALLOC(_)) = true
+ | hasfixed (T.MEMORY m) = hasfixed m
| hasfixed _ = false
(* munch_exp : prex86oper -> T.exp -> prex86insn list *)
* generates instructions to achieve d <- e
* d must be TEMP(t) or REG(r)
*)
- fun munch_exp d (T.CONST(n)) = [X.MOV(d, X.CONST n)]
+ and munch_exp d (T.CONST(n)) = [X.MOV(d, X.CONST n)]
| munch_exp d (T.TEMP(t)) = [X.MOV(d, X.TEMP t)]
- | munch_exp d (T.ARG(0)) = [X.MOV(d, X.REG X.EDI)]
- | munch_exp d (T.ARG(1)) = [X.MOV(d, X.REG X.ESI)]
- | munch_exp d (T.ARG(2)) = [X.MOV(d, X.REG X.EDX)]
- | munch_exp d (T.ARG(3)) = [X.MOV(d, X.REG X.ECX)]
- | munch_exp d (T.ARG(4)) = [X.MOV(d, X.REG X.R8D)]
- | munch_exp d (T.ARG(5)) = [X.MOV(d, X.REG X.R9D)]
- | munch_exp d (T.ARG(t)) = [X.MOV(d, X.STACKARG (t - 6))]
- | munch_exp d (T.CALL(name, l)) = (* Scary demons live here. *)
+ | munch_exp d (T.ARG(0, sz)) = [X.MOV(d, X.OSIZE (X.sts sz, X.REG X.EDI))]
+ | munch_exp d (T.ARG(1, sz)) = [X.MOV(d, X.OSIZE (X.sts sz, X.REG X.ESI))]
+ | munch_exp d (T.ARG(2, sz)) = [X.MOV(d, X.OSIZE (X.sts sz, X.REG X.EDX))]
+ | munch_exp d (T.ARG(3, sz)) = [X.MOV(d, X.OSIZE (X.sts sz, X.REG X.ECX))]
+ | munch_exp d (T.ARG(4, sz)) = [X.MOV(d, X.OSIZE (X.sts sz, X.REG X.R8D))]
+ | munch_exp d (T.ARG(5, sz)) = [X.MOV(d, X.OSIZE (X.sts sz, X.REG X.R9D))]
+ | munch_exp d (T.ARG(t, sz)) = [X.MOV(d, X.OSIZE (X.sts sz, X.STACKARG (t - 6)))]
+ | munch_exp d (T.CALL(name, l, rsz)) = (* Scary demons live here. *)
let
val nargs = length l
val nstack = if (nargs <= 6)
| argdest 4 = X.REG X.ECX
| argdest 5 = X.REG X.R8D
| argdest 6 = X.REG X.R9D
- | argdest n = X.REL (X.RSP, (~(stackb - 8 * (n - 7))))
+ | argdest n = X.REL (X.REG X.RSP, X.CONST (Word32.fromInt (~(stackb - 8 * (n - 7)))) )
val dests = List.tabulate (nargs, fn x => argdest (x+1))
- val hf = List.map hasfixed l
- val (d_hf, exps_hf) = ListPair.unzip (ListPair.foldr
+ val (exps,_) = ListPair.unzip l
+ val hf = List.map hasfixed exps
+ val (d_hf, l_hf) = ListPair.unzip (ListPair.foldr
(fn (a,b,c) => if b then a::c else c)
nil
(ListPair.zip (dests,l), hf)
)
- val (d_nohf, exps_nohf) = ListPair.unzip (ListPair.foldr
+ val (d_nohf, l_nohf) = ListPair.unzip (ListPair.foldr
(fn (a,b,c) => if b then c else a::c)
nil
(ListPair.zip (dests,l), hf)
)
- val temps = List.tabulate (List.length d_hf, fn x => Temp.new(Int.toString x ^ " arg"))
+ val temps = List.map (fn (_, sz) => Temp.new ("arg") sz (* xxx? *)) l_hf
val argevals_hf = List.map
- (fn (t,exp) => munch_exp (X.TEMP t) exp)
- (ListPair.zip (temps, exps_hf))
+ (fn (t,(exp,_)) => munch_exp (X.TEMP t) exp)
+ (ListPair.zip (temps, l_hf))
val argpushes = List.map
- (fn (dest, t) => [(X.MOV (dest, X.TEMP t))])
+ (fn (dest, t) => [(X.MOV (X.OSIZE(X.sts (Temp.size t), dest), X.TEMP t))])
(ListPair.zip (d_hf, temps))
val argevals_nohf = List.map
- (fn (d,exp) => munch_exp d exp)
- (ListPair.zip (d_nohf, exps_nohf))
+ (fn (d,(exp,sz)) => munch_exp (X.OSIZE (X.sts sz, d)) exp)
+ (ListPair.zip (d_nohf, l_nohf))
in
List.concat argevals_hf @
List.concat argpushes @
List.concat argevals_nohf @
- [ X.SIZE (X.Qword, X.SUB (X.REG X.RSP, X.CONST (Word32.fromInt stackb))),
+ [ X.SUB (X.OSIZE (X.Qword, X.REG X.RSP), X.CONST (Word32.fromInt stackb)),
X.CALL (name, nargs),
- X.SIZE (X.Qword, X.ADD (X.REG X.RSP, X.CONST (Word32.fromInt stackb))),
- X.MOV (d, X.REG X.EAX) ] (* Finally! *)
+ X.ADD (X.OSIZE (X.Qword, X.REG X.RSP), X.CONST (Word32.fromInt stackb)),
+ X.MOV (d, X.OSIZE (X.sts rsz, X.REG X.EAX)) ] (* Finally! *)
end
- | munch_exp d (T.BINOP(T.ADD, e1, T.CONST 0w0)) = munch_exp d e1
+(* | munch_exp d (T.BINOP(T.ADD, e1, T.CONST 0w0)) = munch_exp d e1
| munch_exp d (T.BINOP(T.ADD, T.CONST 0w0, e1)) = munch_exp d e1
| munch_exp d (T.BINOP(T.ADD, e1, T.CONST n)) = (munch_exp d e1) @ [X.ADD(d, X.CONST n)]
| munch_exp d (T.BINOP(T.ADD, T.CONST n, e1)) = (munch_exp d e1) @ [X.ADD(d, X.CONST n)]
| munch_exp d (T.BINOP(T.ADD, e1, T.TEMP t)) = (munch_exp d e1) @ [X.ADD(d, X.TEMP t)]
- | munch_exp d (T.BINOP(T.ADD, T.TEMP t, e2)) = (munch_exp d e2) @ [X.ADD(d, X.TEMP t)]
+ | munch_exp d (T.BINOP(T.ADD, T.TEMP t, e2)) = (munch_exp d e2) @ [X.ADD(d, X.TEMP t)] *)
| munch_exp d (T.BINOP(T.ADD, e1, e2)) =
let
- val t1 = X.TEMP (Temp.new ("add"))
+ val t1 = X.TEMP (Temp.new ("add") 4)
in
(munch_exp d e1) @ (munch_exp t1 e2) @ [X.ADD(d, t1)]
end
- | munch_exp d (T.BINOP(T.SUB, T.CONST 0w0, e1)) = (munch_exp d e1) @ [X.NEG d]
+(* | munch_exp d (T.BINOP(T.SUB, T.CONST 0w0, e1)) = (munch_exp d e1) @ [X.NEG d]
| munch_exp d (T.BINOP(T.SUB, e1, T.CONST 0w0)) = munch_exp d e1
| munch_exp d (T.BINOP(T.SUB, e1, T.CONST(n))) = (munch_exp d e1) @ [X.SUB(d, X.CONST n)]
- | munch_exp d (T.BINOP(T.SUB, e1, T.TEMP t)) = (munch_exp d e1) @ [X.SUB(d, X.TEMP t)]
+ | munch_exp d (T.BINOP(T.SUB, e1, T.TEMP t)) = (munch_exp d e1) @ [X.SUB(d, X.TEMP t)] *)
| munch_exp d (T.BINOP(T.SUB, e1, e2)) =
let
- val t1 = X.TEMP (Temp.new ("sub"))
+ val t1 = X.TEMP (Temp.new ("sub") 4)
in
(munch_exp d e1) @ (munch_exp t1 e2) @ [X.SUB(d, t1)]
end
| munch_exp d (T.BINOP(T.MUL, T.TEMP t, T.CONST n)) = [X.IMUL3(d, X.TEMP t, n)]
| munch_exp d (T.BINOP(T.MUL, T.CONST n, T.TEMP t)) = [X.IMUL3(d, X.TEMP t, n)]
+(*
| munch_exp d (T.BINOP(T.MUL, e1, T.CONST 0w1)) = munch_exp d e1
| munch_exp d (T.BINOP(T.MUL, T.CONST 0w1, e1)) = munch_exp d e1
| munch_exp d (T.BINOP(T.MUL, e1, T.CONST n)) = (munch_exp d e1) @ [X.IMUL(d, X.CONST n)]
- | munch_exp d (T.BINOP(T.MUL, T.CONST n, e1)) = (munch_exp d e1) @ [X.IMUL(d, X.CONST n)]
+ | munch_exp d (T.BINOP(T.MUL, T.CONST n, e1)) = (munch_exp d e1) @ [X.IMUL(d, X.CONST n)] *)
| munch_exp d (T.BINOP(T.MUL, e1, e2)) =
let
- val t1 = X.TEMP (Temp.new ("mul"))
+ val t1 = X.TEMP (Temp.new ("mul") 4)
in
(munch_exp d e1) @ (munch_exp t1 e2) @ [X.IMUL(d, t1)]
end
| munch_exp d (T.BINOP(T.DIV, e1, e2)) =
let
- val t1 = X.TEMP (Temp.new ("div"))
+ val t1 = X.TEMP (Temp.new ("div") 4)
in
(munch_exp t1 e1) @ (munch_exp d e2) @
[X.MOV (X.REG X.EAX, t1), X.CLTD, X.IDIV d, X.MOV (d, X.REG X.EAX)]
end
| munch_exp d (T.BINOP(T.MOD, e1, e2)) =
let
- val t1 = X.TEMP (Temp.new ("mod"))
+ val t1 = X.TEMP (Temp.new ("mod") 4)
in
(munch_exp t1 e1) @ (munch_exp d e2) @
[X.MOV (X.REG X.EAX, t1), X.CLTD, X.IDIV d, X.MOV (d, X.REG X.EDX)]
| munch_exp d (T.BINOP(T.LSH, e1, T.TEMP t)) = (munch_exp d e1) @ [X.MOV (X.REG X.ECX, X.TEMP t), X.SAL (d, X.REG X.ECX)]
| munch_exp d (T.BINOP(T.LSH, e1, e2)) =
let
- val t = X.TEMP (Temp.new ("lsh"))
+ val t = X.TEMP (Temp.new ("lsh") 4)
in
(munch_exp d e1) @ (munch_exp t e2) @ [X.MOV (X.REG X.ECX, t), X.SAL (d, X.REG X.ECX)]
end
| munch_exp d (T.BINOP(T.RSH, e1, T.TEMP t)) = (munch_exp d e1) @ [X.MOV (X.REG X.ECX, X.TEMP t), X.SAR (d, X.REG X.ECX)]
| munch_exp d (T.BINOP(T.RSH, e1, e2)) =
let
- val t = X.TEMP (Temp.new ("rsh"))
+ val t = X.TEMP (Temp.new ("rsh") 4)
in
(munch_exp d e1) @ (munch_exp t e2) @ [X.MOV (X.REG X.ECX, t), X.SAR (d, X.REG X.ECX)]
end
| munch_exp d (T.BINOP(T.BITAND, e1, T.TEMP t)) = (munch_exp d e1) @ [X.AND (d, X.TEMP t)]
| munch_exp d (T.BINOP(T.BITAND, e1, e2)) =
let
- val t1 = X.TEMP (Temp.new ("bitand"))
+ val t1 = X.TEMP (Temp.new ("bitand") 4)
in
(munch_exp d e1) @ (munch_exp t1 e2) @ [X.AND(d, t1)]
end
| munch_exp d (T.BINOP(T.BITOR, e1, T.TEMP t)) = (munch_exp d e1) @ [X.OR (d, X.TEMP t)]
| munch_exp d (T.BINOP(T.BITOR, e1, e2)) =
let
- val t1 = X.TEMP (Temp.new ("bitor"))
+ val t1 = X.TEMP (Temp.new ("bitor") 4)
in
(munch_exp d e1) @ (munch_exp t1 e2) @ [X.OR(d, t1)]
end
| munch_exp d (T.BINOP(T.BITXOR, e1, T.TEMP t)) = (munch_exp d e1) @ [X.XOR (d, X.TEMP t)]
| munch_exp d (T.BINOP(T.BITXOR, e1, e2)) =
let
- val t1 = X.TEMP (Temp.new ("bitxor"))
+ val t1 = X.TEMP (Temp.new ("bitxor") 4)
in
(munch_exp d e1) @ (munch_exp t1 e2) @ [X.XOR(d, t1)]
end
let
val (insn1, pos1, neg1) = munch_cond e1
val (insn2, pos2, neg2) = munch_cond e2
- val t1 = X.TEMP (Temp.new("logand 1"))
- val t2 = X.TEMP (Temp.new("logand 2"))
+ val t1 = X.TEMP (Temp.new("logand 1") 4)
+ val t2 = X.TEMP (Temp.new("logand 2") 4)
val l = Label.new ()
in
if (effect e2 orelse (length insn2 > 10))
[X.SETcc(pos1, t1), X.Jcc (neg1, l)] @
(insn2) @
[X.SETcc(pos2, t1), X.LABEL l, X.MOVZB(d, t1)]
- else insn1 @ [X.SETcc (pos1, t1)] @ insn2 @ [X.SETcc (pos2, t2), X.SIZE(X.Byte, X.AND(t1, t2)), X.MOVZB(d, t1)]
+ else insn1 @ [X.SETcc (pos1, t1)] @ insn2 @ [X.SETcc (pos2, t2), X.AND(X.OSIZE (X.Byte, t1), X.OSIZE (X.Byte, t2)), X.MOVZB(d, t1)]
end
| munch_exp d (a as T.BINOP(T.LOGOR, e1, e2)) =
let
val (insn1, pos1, neg1) = munch_cond e1
val (insn2, pos2, neg2) = munch_cond e2
- val t1 = X.TEMP (Temp.new("logor 1"))
- val t2 = X.TEMP (Temp.new("logor 2"))
+ val t1 = X.TEMP (Temp.new("logor 1") 4)
+ val t2 = X.TEMP (Temp.new("logor 2") 4)
val l = Label.new ()
in
if (effect e2 orelse (length insn2 > 10))
[X.SETcc(pos1, t1), X.Jcc (pos1, l)] @
(insn2) @
[X.SETcc(pos2, t1), X.LABEL l, X.MOVZB(d, t1)]
- else insn1 @ [X.SETcc (pos1, t1)] @ insn2 @ [X.SETcc (pos2, t2), X.SIZE(X.Byte, X.OR(t1, t2)), X.MOVZB(d, t1)]
+ else insn1 @ [X.SETcc (pos1, t1)] @ insn2 @ [X.SETcc (pos2, t2), X.OR(X.OSIZE (X.Byte, t1), X.OSIZE (X.Byte, t2)), X.MOVZB(d, t1)]
end
| munch_exp d (a as T.BINOP(T.EQ, _, _)) =
let val (insns, pos, neg) = munch_cond a in insns @ [X.SETcc (pos, d), X.MOVZB(d, d)] end
in
insns @ [X.SETcc (neg, d), X.MOVZB(d, d)]
end
+ | munch_exp d (T.MEMORY e1) =
+ let
+ val a = X.TEMP (Temp.new "addr" 8)
+ in
+ munch_exp a e1 @ [X.MOV (d, X.REL (a, X.CONST 0w0))]
+ end
+ | munch_exp d (T.ALLOC(exp)) = (munch_exp d (T.CALL (Symbol.symbol "calloc", [(exp, 4), (T.CONST 0w1, 4)], 8)))
+ @ [X.MOV (X.REL (d, X.CONST 0w0), X.CONST 0w0)]
+
(* munch_cond : T.exp -> X.insn list * X.cond * X.cond
* munch_cond stm generates code to set flags, and then returns a conditional
* to test if the expression was true and for if it was false.
| munch_cond (T.BINOP(T.NEQ, T.TEMP t, T.CONST n)) = ([X.CMP(X.TEMP t, X.CONST n)], X.NE, X.E)
| munch_cond (T.BINOP(T.NEQ, T.CONST n, T.TEMP t)) = ([X.CMP(X.TEMP t, X.CONST n)], X.NE, X.E)
| munch_cond (T.BINOP(T.NEQ, T.CONST n, e1)) =
- let val t = X.TEMP (Temp.new ("const neq")) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.NE, X.E) end
+ let val t = X.TEMP (Temp.new ("const neq") 4) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.NE, X.E) end
| munch_cond (T.BINOP(T.NEQ, e1, T.CONST n)) =
- let val t = X.TEMP (Temp.new ("const neq")) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.NE, X.E) end
+ let val t = X.TEMP (Temp.new ("const neq") 4) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.NE, X.E) end
| munch_cond (T.BINOP(T.NEQ, T.TEMP t, e1)) =
- let val t1 = X.TEMP (Temp.new ("const neq")) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.NE, X.E) end
+ let val t1 = X.TEMP (Temp.new ("const neq") 4) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.NE, X.E) end
| munch_cond (T.BINOP(T.NEQ, e1, T.TEMP t)) =
- let val t1 = X.TEMP (Temp.new ("const neq")) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.NE, X.E) end
+ let val t1 = X.TEMP (Temp.new ("const neq") 4) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.NE, X.E) end
| munch_cond (T.BINOP(T.NEQ, e1, e2)) =
let
- val t1 = X.TEMP (Temp.new ("var neq 1"))
- val t2 = X.TEMP (Temp.new ("var neq 2"))
+ val t1 = X.TEMP (Temp.new ("var neq 1") 4)
+ val t2 = X.TEMP (Temp.new ("var neq 2") 4)
in
(munch_exp t1 e1 @ munch_exp t2 e2 @
[X.CMP(t1, t2)], X.NE, X.E)
| munch_cond (T.BINOP(T.EQ, T.TEMP t, T.CONST n)) = ([X.CMP(X.TEMP t, X.CONST n)], X.E, X.NE)
| munch_cond (T.BINOP(T.EQ, T.CONST n, T.TEMP t)) = ([X.CMP(X.TEMP t, X.CONST n)], X.E, X.NE)
| munch_cond (T.BINOP(T.EQ, T.CONST n, e1)) =
- let val t = X.TEMP (Temp.new ("const eq")) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.E, X.NE) end
+ let val t = X.TEMP (Temp.new ("const eq") 4) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.E, X.NE) end
| munch_cond (T.BINOP(T.EQ, e1, T.CONST n)) =
- let val t = X.TEMP (Temp.new ("const eq")) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.E, X.NE) end
+ let val t = X.TEMP (Temp.new ("const eq") 4) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.E, X.NE) end
| munch_cond (T.BINOP(T.EQ, T.TEMP t, e1)) =
- let val t1 = X.TEMP (Temp.new ("const eq")) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.E, X.NE) end
+ let val t1 = X.TEMP (Temp.new ("const eq") 4) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.E, X.NE) end
| munch_cond (T.BINOP(T.EQ, e1, T.TEMP t)) =
- let val t1 = X.TEMP (Temp.new ("const eq")) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.E, X.NE) end
+ let val t1 = X.TEMP (Temp.new ("const eq") 4) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.E, X.NE) end
| munch_cond (T.BINOP(T.EQ, e1, e2)) =
let
- val t1 = X.TEMP (Temp.new ("var eq 1"))
- val t2 = X.TEMP (Temp.new ("var eq 2"))
+ val t1 = X.TEMP (Temp.new ("var eq 1") 4)
+ val t2 = X.TEMP (Temp.new ("var eq 2") 4)
in
(munch_exp t1 e1 @ munch_exp t2 e2 @
[X.CMP(t1, t2)], X.E, X.NE)
| munch_cond (T.BINOP(T.LE, T.TEMP t, T.CONST n)) = ([X.CMP(X.TEMP t, X.CONST n)], X.LE, X.G)
| munch_cond (T.BINOP(T.LE, T.CONST n, T.TEMP t)) = ([X.CMP(X.TEMP t, X.CONST n)], X.GE, X.L)
| munch_cond (T.BINOP(T.LE, T.CONST n, e1)) =
- let val t = X.TEMP (Temp.new ("const le")) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.GE, X.L) end
+ let val t = X.TEMP (Temp.new ("const le") 4) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.GE, X.L) end
| munch_cond (T.BINOP(T.LE, e1, T.CONST n)) =
- let val t = X.TEMP (Temp.new ("const le")) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.LE, X.G) end
+ let val t = X.TEMP (Temp.new ("const le") 4) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.LE, X.G) end
| munch_cond (T.BINOP(T.LE, T.TEMP t, e1)) =
- let val t1 = X.TEMP (Temp.new ("const le")) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.GE, X.L) end
+ let val t1 = X.TEMP (Temp.new ("const le") 4) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.GE, X.L) end
| munch_cond (T.BINOP(T.LE, e1, T.TEMP t)) =
- let val t1 = X.TEMP (Temp.new ("const le")) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.LE, X.G) end
+ let val t1 = X.TEMP (Temp.new ("const le") 4) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.LE, X.G) end
| munch_cond (T.BINOP(T.LE, e1, e2)) =
let
- val t1 = X.TEMP (Temp.new ("var le 1"))
- val t2 = X.TEMP (Temp.new ("var le 2"))
+ val t1 = X.TEMP (Temp.new ("var le 1") 4)
+ val t2 = X.TEMP (Temp.new ("var le 2") 4)
in
(munch_exp t1 e1 @ munch_exp t2 e2 @
[X.CMP(t1, t2)], X.LE, X.G)
| munch_cond (T.BINOP(T.LT, T.TEMP t, T.CONST n)) = ([X.CMP(X.TEMP t, X.CONST n)], X.L, X.GE)
| munch_cond (T.BINOP(T.LT, T.CONST n, T.TEMP t)) = ([X.CMP(X.TEMP t, X.CONST n)], X.G, X.LE)
| munch_cond (T.BINOP(T.LT, T.CONST n, e1)) =
- let val t = X.TEMP (Temp.new ("const lt")) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.G, X.LE) end
+ let val t = X.TEMP (Temp.new ("const lt") 4) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.G, X.LE) end
| munch_cond (T.BINOP(T.LT, e1, T.CONST n)) =
- let val t = X.TEMP (Temp.new ("const lt")) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.L, X.GE) end
+ let val t = X.TEMP (Temp.new ("const lt") 4) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.L, X.GE) end
| munch_cond (T.BINOP(T.LT, T.TEMP t, e1)) =
- let val t1 = X.TEMP (Temp.new ("const lt")) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.G, X.LE) end
+ let val t1 = X.TEMP (Temp.new ("const lt") 4) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.G, X.LE) end
| munch_cond (T.BINOP(T.LT, e1, T.TEMP t)) =
- let val t1 = X.TEMP (Temp.new ("const lt")) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.L, X.GE) end
+ let val t1 = X.TEMP (Temp.new ("const lt") 4) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.L, X.GE) end
| munch_cond (T.BINOP(T.LT, e1, e2)) =
let
- val t1 = X.TEMP (Temp.new ("var lt 1"))
- val t2 = X.TEMP (Temp.new ("var lt 2"))
+ val t1 = X.TEMP (Temp.new ("var lt 1") 4)
+ val t2 = X.TEMP (Temp.new ("var lt 2") 4)
in
(munch_exp t1 e1 @ munch_exp t2 e2 @
[X.CMP(t1, t2)], X.L, X.GE)
| munch_cond (T.BINOP(T.GT, T.TEMP t, T.CONST n)) = ([X.CMP(X.TEMP t, X.CONST n)], X.G, X.LE)
| munch_cond (T.BINOP(T.GT, T.CONST n, T.TEMP t)) = ([X.CMP(X.TEMP t, X.CONST n)], X.L, X.GE)
| munch_cond (T.BINOP(T.GT, e1, T.CONST n)) =
- let val t = X.TEMP (Temp.new ("const gt")) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.G, X.LE) end
+ let val t = X.TEMP (Temp.new ("const gt") 4) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.G, X.LE) end
| munch_cond (T.BINOP(T.GT, T.CONST n, e1)) =
- let val t = X.TEMP (Temp.new ("const gt")) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.L, X.GE) end
+ let val t = X.TEMP (Temp.new ("const gt") 4) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.L, X.GE) end
| munch_cond (T.BINOP(T.GT, e1, T.TEMP t)) =
- let val t1 = X.TEMP (Temp.new ("const gt")) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.G, X.LE) end
+ let val t1 = X.TEMP (Temp.new ("const gt") 4) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.G, X.LE) end
| munch_cond (T.BINOP(T.GT, T.TEMP t, e1)) =
- let val t1 = X.TEMP (Temp.new ("const gt")) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.L, X.GE) end
+ let val t1 = X.TEMP (Temp.new ("const gt") 4) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.L, X.GE) end
| munch_cond (T.BINOP(T.GT, e1, e2)) =
let
- val t1 = X.TEMP (Temp.new ("var gt 1"))
- val t2 = X.TEMP (Temp.new ("var gt 2"))
+ val t1 = X.TEMP (Temp.new ("var gt 1") 4)
+ val t2 = X.TEMP (Temp.new ("var gt 2") 4)
in
(munch_exp t1 e1 @ munch_exp t2 e2 @
[X.CMP(t1, t2)], X.G, X.LE)
| munch_cond (T.BINOP(T.GE, T.TEMP t, T.CONST n)) = ([X.CMP(X.TEMP t, X.CONST n)], X.GE, X.L)
| munch_cond (T.BINOP(T.GE, T.CONST n, T.TEMP t)) = ([X.CMP(X.TEMP t, X.CONST n)], X.LE, X.G)
| munch_cond (T.BINOP(T.GE, e1, T.CONST n)) =
- let val t = X.TEMP (Temp.new ("const ge")) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.GE, X.L) end
+ let val t = X.TEMP (Temp.new ("const ge") 4) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.GE, X.L) end
| munch_cond (T.BINOP(T.GE, T.CONST n, e1)) =
- let val t = X.TEMP (Temp.new ("const ge")) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.LE, X.G) end
+ let val t = X.TEMP (Temp.new ("const ge") 4) in (munch_exp t e1 @ [X.CMP(t, X.CONST n)], X.LE, X.G) end
| munch_cond (T.BINOP(T.GE, e1, T.TEMP t)) =
- let val t1 = X.TEMP (Temp.new ("const ge")) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.GE, X.L) end
+ let val t1 = X.TEMP (Temp.new ("const ge") 4) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.GE, X.L) end
| munch_cond (T.BINOP(T.GE, T.TEMP t, e1)) =
- let val t1 = X.TEMP (Temp.new ("const ge")) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.LE, X.G) end
+ let val t1 = X.TEMP (Temp.new ("const ge") 4) in (munch_exp t1 e1 @ [X.CMP(t1, X.TEMP t)], X.LE, X.G) end
| munch_cond (T.BINOP(T.GE, e1, e2)) =
let
- val t1 = X.TEMP (Temp.new ("var ge 1"))
- val t2 = X.TEMP (Temp.new ("var ge 2"))
+ val t1 = X.TEMP (Temp.new ("var ge 1") 4)
+ val t2 = X.TEMP (Temp.new ("var ge 2") 4)
in
(munch_exp t1 e1 @ munch_exp t2 e2 @
[X.CMP(t1, t2)], X.GE, X.L)
let
val (insn1, pos1, neg1) = munch_cond e1
val (insn2, pos2, neg2) = munch_cond e2
- val t1 = X.TEMP (Temp.new("logor c 1"))
- val t2 = X.TEMP (Temp.new("logor c 2"))
+ val t1 = X.TEMP (Temp.new("logor c 1") 4)
+ val t2 = X.TEMP (Temp.new("logor c 2") 4)
val l = Label.new ()
in
if (effect e2 orelse (length insn2 > 10))
then ((insn1) @
[X.SETcc (pos1, t1), X.Jcc (pos1, l)] @
(insn2) @
- [X.SETcc (pos2, t1), X.LABEL l, X.SIZE (X.Byte, X.TEST (t1, t1))],
+ [X.SETcc (pos2, t1), X.LABEL l, X.TEST(X.OSIZE (X.Byte, t1), X.OSIZE (X.Byte, t1))],
X.NE, X.E)
- else (insn1 @ [X.SETcc (pos1, t1)] @ insn2 @ [X.SETcc (pos2, t2), X.SIZE(X.Byte, X.OR(t1, t2))], X.NE, X.E)
+ else (insn1 @ [X.SETcc (pos1, t1)] @ insn2 @ [X.SETcc (pos2, t2), X.OR(X.OSIZE (X.Byte, t1), X.OSIZE (X.Byte, t2))], X.NE, X.E)
end
| munch_cond (T.BINOP(T.LOGAND, e1, e2)) =
let
val (insn1, pos1, neg1) = munch_cond e1
val (insn2, pos2, neg2) = munch_cond e2
- val t1 = X.TEMP (Temp.new("logand c 1"))
- val t2 = X.TEMP (Temp.new("logand c 2"))
+ val t1 = X.TEMP (Temp.new("logand c 1") 4)
+ val t2 = X.TEMP (Temp.new("logand c 2") 4)
val l = Label.new ()
in
if (effect e2 orelse (length insn2 > 10))
then ((insn1) @
[X.SETcc (pos1, t1), X.Jcc (neg1, l)] @
(insn2) @
- [X.SETcc (pos2, t1), X.LABEL l, X.SIZE (X.Byte, X.TEST (t1, t1))],
+ [X.SETcc (pos2, t1), X.LABEL l, X.TEST(X.OSIZE (X.Byte, t1), X.OSIZE (X.Byte, t1))],
X.NE, X.E)
- else (insn1 @ [X.SETcc (pos1, t1)] @ insn2 @ [X.SETcc (pos2, t2), X.SIZE(X.Byte, X.AND(t1, t2))], X.NE, X.E)
+ else (insn1 @ [X.SETcc (pos1, t1)] @ insn2 @ [X.SETcc (pos2, t2), X.AND(X.OSIZE (X.Byte, t1), X.OSIZE (X.Byte, t2))], X.NE, X.E)
end
| munch_cond e =
let
- val t = X.TEMP (Temp.new ("munch c"))
+ val t = X.TEMP (Temp.new ("munch c") 4)
in
(munch_exp t e @ [ X.TEST (t,t) ], X.NE, X.E)
end
+ (* munch_lval : T.exp -> (X.insn list * X.operand)
+ * Takes an expression that has been typechecked as being a valid lvalue, and then returns an instruction list and an operand to store your shit in.
+ *)
+ fun munch_lval (T.TEMP t) = ([], X.TEMP t)
+ | munch_lval (T.MEMORY m) =
+ let
+ val t = Temp.new "lv addr" 8
+ in
+ (munch_exp (X.TEMP t) m, X.REL (X.TEMP t, X.CONST 0w0))
+ end
+ | munch_lval _ = raise ErrorMsg.InternalError "That wasn't really a valid lvalue..."
+
(* munch_stm : T.stm -> X.insn list *)
(* munch_stm stm generates code to execute stm *)
- fun munch_stm (T.MOVE (T.TEMP t, a as T.TEMP _)) = munch_exp (X.TEMP t) a
- | munch_stm (T.MOVE (T.TEMP t, a as T.CONST _)) = munch_exp (X.TEMP t) a
- | munch_stm (T.MOVE (T.TEMP t, a as T.ARG _)) = munch_exp (X.TEMP t) a
- | munch_stm (T.MOVE (T.TEMP t, a as T.CALL _)) = munch_exp (X.TEMP t) a
- | munch_stm (T.MOVE(T.TEMP t1, e2)) =
+ fun munch_stm (T.MOVE (T.TEMP t, a as T.TEMP _, _)) = munch_exp (X.TEMP t) a
+ | munch_stm (T.MOVE (T.TEMP t, a as T.CONST _, _)) = munch_exp (X.TEMP t) a
+ | munch_stm (T.MOVE (T.TEMP t, a as T.ARG (an, sz), _)) = munch_exp (X.TEMP t) a
+ | munch_stm (T.MOVE (T.TEMP t, a as T.CALL _, _)) = munch_exp (X.TEMP t) a
+ | munch_stm (T.MOVE (a, e2, sz)) =
let
- val t = Temp.new ("assign")
+ val t = Temp.new ("assign") sz
+ val (m, r) = munch_lval a
in
- munch_exp (X.TEMP t) e2
- @ [X.MOV(X.TEMP t1, X.TEMP t)]
+ m @ munch_exp (X.TEMP t) e2
+ @ [X.MOV(X.OSIZE (X.sts sz, r), X.TEMP t)]
end
- | munch_stm (T.MOVE(_, _)) =
- raise ErrorMsg.InternalError "Incorrect first operand for T.MOVE?"
- | munch_stm (T.RETURN(e)) =
+ | munch_stm (T.RETURN(e, sz)) =
let
- val t = Temp.new ("retval")
+ val t = Temp.new ("retval") sz
in
munch_exp (X.TEMP t) e
- @ [X.MOV(X.REG X.EAX, X.TEMP t), X.RET]
+ @ [X.MOV(X.OSIZE (X.sts sz, X.REG X.EAX), X.TEMP t), X.RET]
end
| munch_stm (T.LABEL(l)) = [X.LABEL l]
| munch_stm (T.JUMP(l)) = [X.JMP l]
in
insns @ [X.Jcc (neg, l)]
end
+ | munch_stm (T.EFFECT(exp, sz)) = let val t = X.TEMP (Temp.new "throwaway" sz) in munch_exp t exp end
fun codegen nil = nil
| codegen (stm::stms) = munch_stm stm @ codegen stms
git.joshuawise.com / snipe.git / blobdiff