(*
BSD 2-Clause License
Copyright (c) 2020-2021, Anton Krotov
All rights reserved.
*)
(*
RVMxI executor and disassembler
Usage:
RVMxI.exe <program file> -run [program parameters]
RVMxI.exe <program file> -dis <output file>
*)
MODULE RVMxI;
IMPORT SYSTEM, File, Args, Out, API, HOST;
CONST
szWORD = HOST.bit_depth DIV 8;
opSTOP = 0; opRET = 1; opENTER = 2; opNEG = 3; opNOT = 4; opNOP = 5;
opXCHG = 6; opLDB = 7; opLDH = 8; opLDW = 9; opPUSH = 10; opPUSHC = 11;
opPOP = 12; opLABEL = 13; opLEA = 14; opLLA = 15;
opLDD = 16; (* 17, 18 *)
opJMP = 19; opCALL = 20; opCALLI = 21;
opMOV = 22; opMUL = 24; opADD = 26; opSUB = 28; opDIV = 30; opMOD = 32;
opSTB = 34; opSTH = 36; opSTW = 38; opSTD = 40; (* 42, 44 *)
opAND = 46; opOR = 48; opXOR = 50; opASR = 52; opLSR = 54;
opLSL = 56; opROR = 58; (* 60, 62 *) opCMP = 64;
opMOVC = 23; opMULC = 25; opADDC = 27; opSUBC = 29; opDIVC = 31; opMODC = 33;
opSTBC = 35; opSTHC = 37; opSTWC = 39; opSTDC = 41; (* 43, 45 *)
opANDC = 47; opORC = 49; opXORC = 51; opASRC = 53; opLSRC = 55;
opLSLC = 57; opRORC = 59; (* 61, 63 *) opCMPC = 65;
opBIT = 66; opSYSCALL = 67; opJBT = 68; opADDRC = 69;
opJEQ = 70; opJNE = 71; opJLT = 72; opJGE = 73; opJGT = 74; opJLE = 75;
opSEQ = 76; opSNE = 77; opSLT = 78; opSGE = 79; opSGT = 80; opSLE = 81;
nREG = 16;
ACC = 0; BP = 3; SP = 4;
Types = 0;
Strings = 1;
Global = 2;
Heap = 3;
Stack = 4;
TYPE
COMMAND = POINTER TO RECORD
op, param1, param2: INTEGER;
next, prev: COMMAND
END;
LABELS = ARRAY 30000 OF COMMAND;
SECTIONS = ARRAY 5 OF INTEGER;
VAR
Sections: SECTIONS;
first, last: COMMAND;
Labels: LABELS;
F: INTEGER; buf: ARRAY 65536 OF BYTE; cnt: INTEGER;
PROCEDURE syscall (ptr: INTEGER);
VAR
fn, r, n: INTEGER;
proc2: PROCEDURE (a, b: INTEGER): INTEGER;
proc3: PROCEDURE (a, b, c: INTEGER): INTEGER;
proc4: PROCEDURE (a, b, c, d: INTEGER): INTEGER;
r1, r2: REAL;
PROCEDURE GetInt (ptr, n: INTEGER): INTEGER;
BEGIN
SYSTEM.GET(ptr + SYSTEM.SIZE(INTEGER) * n, n)
RETURN n
END GetInt;
PROCEDURE GetReal (ptr, n: INTEGER): REAL;
VAR
r: REAL;
BEGIN
SYSTEM.GET(ptr + SYSTEM.SIZE(INTEGER) * n, r)
RETURN r
END GetReal;
BEGIN
fn := GetInt(ptr, 0);
CASE fn OF
| 0:
HOST.ExitProcess(GetInt(ptr, 1))
| 1:
SYSTEM.PUT(SYSTEM.ADR(proc2), SYSTEM.ADR(HOST.GetCurrentDirectory));
r := proc2(GetInt(ptr, 1), GetInt(ptr, 2))
| 2:
n := GetInt(ptr, 1);
SYSTEM.PUT(SYSTEM.ADR(proc3), SYSTEM.ADR(HOST.GetArg));
r := proc3(n - ORD(n = 0) + 2, GetInt(ptr, 2), GetInt(ptr, 3))
| 3:
SYSTEM.PUT(SYSTEM.ADR(proc4), SYSTEM.ADR(HOST.FileRead));
SYSTEM.PUT(ptr, proc4(GetInt(ptr, 1), GetInt(ptr, 2), GetInt(ptr, 3), GetInt(ptr, 4)))
| 4:
SYSTEM.PUT(SYSTEM.ADR(proc4), SYSTEM.ADR(HOST.FileWrite));
SYSTEM.PUT(ptr, proc4(GetInt(ptr, 1), GetInt(ptr, 2), GetInt(ptr, 3), GetInt(ptr, 4)))
| 5:
SYSTEM.PUT(SYSTEM.ADR(proc2), SYSTEM.ADR(HOST.FileCreate));
SYSTEM.PUT(ptr, proc2(GetInt(ptr, 1), GetInt(ptr, 2)))
| 6:
HOST.FileClose(GetInt(ptr, 1))
| 7:
SYSTEM.PUT(SYSTEM.ADR(proc2), SYSTEM.ADR(HOST.FileOpen));
SYSTEM.PUT(ptr, proc2(GetInt(ptr, 1), GetInt(ptr, 2)))
| 8:
HOST.OutChar(CHR(GetInt(ptr, 1)))
| 9:
SYSTEM.PUT(ptr, HOST.GetTickCount())
|10:
SYSTEM.PUT(ptr, HOST.UnixTime())
|11:
SYSTEM.PUT(SYSTEM.ADR(proc2), SYSTEM.ADR(HOST.isRelative));
SYSTEM.PUT(ptr, proc2(GetInt(ptr, 1), GetInt(ptr, 2)))
|12:
SYSTEM.PUT(SYSTEM.ADR(proc2), SYSTEM.ADR(HOST.chmod));
r := proc2(GetInt(ptr, 1), GetInt(ptr, 2))
|100..103:
r1 := GetReal(ptr, 1);
r2 := GetReal(ptr, 2);
CASE fn OF
|100: SYSTEM.PUT(ptr, r2 * r1)
|101: SYSTEM.PUT(ptr, r2 / r1)
|102: SYSTEM.PUT(ptr, r2 + r1)
|103: SYSTEM.PUT(ptr, r2 - r1)
END
|104:
r1 := GetReal(ptr, 2);
r2 := GetReal(ptr, 3);
CASE GetInt(ptr, 1) OF
|0: SYSTEM.PUT(ptr, ORD(r2 = r1))
|1: SYSTEM.PUT(ptr, ORD(r2 # r1))
|2: SYSTEM.PUT(ptr, ORD(r2 < r1))
|3: SYSTEM.PUT(ptr, ORD(r2 <= r1))
|4: SYSTEM.PUT(ptr, ORD(r2 > r1))
|5: SYSTEM.PUT(ptr, ORD(r2 >= r1))
END
|105:
SYSTEM.PUT(ptr, FLOOR(GetReal(ptr, 1)))
|106:
SYSTEM.PUT(ptr, FLT(GetInt(ptr, 1)))
END
END syscall;
PROCEDURE exec (VAR Labels: LABELS; first, last: COMMAND; Sections: SECTIONS);
VAR
cmd: COMMAND;
param1, param2, i: INTEGER;
R: ARRAY nREG OF INTEGER;
fe, fl, fb: BOOLEAN;
BEGIN
FOR i := 0 TO LEN(Labels) - 1 DO
cmd := Labels[i];
IF cmd # NIL THEN
REPEAT
cmd := cmd.next
UNTIL cmd.op # opLABEL;
Labels[i] := cmd
END
END;
cmd := first;
WHILE cmd # NIL DO
IF cmd.op = opLABEL THEN
cmd.prev.next := cmd.next;
cmd.next.prev := cmd.prev
END;
cmd := cmd.next
END;
FOR i := 0 TO LEN(Labels) - 1 DO
IF Labels[i] # NIL THEN
Labels[i] := Labels[i].prev
END
END;
cmd := first;
WHILE cmd # NIL DO
param1 := cmd.param1;
param2 := cmd.param2;
CASE cmd.op OF
|opSTOP: cmd := last
|opRET: SYSTEM.GET(R[SP], cmd); INC(R[SP], szWORD)
|opENTER: DEC(R[SP], szWORD); SYSTEM.PUT(R[SP], R[BP]); R[BP] := R[SP];
WHILE param1 > 0 DO DEC(R[SP], szWORD); SYSTEM.PUT(R[SP], 0); DEC(param1) END
|opPOP: SYSTEM.GET(R[SP], R[param1]); INC(R[SP], szWORD)
|opPUSH: DEC(R[SP], szWORD); SYSTEM.PUT(R[SP], R[param1])
|opPUSHC: DEC(R[SP], szWORD); SYSTEM.PUT(R[SP], param1)
|opCALL: DEC(R[SP], szWORD); SYSTEM.PUT(R[SP], cmd); cmd := Labels[param1]
|opCALLI: DEC(R[SP], szWORD); SYSTEM.PUT(R[SP], cmd); SYSTEM.GET(SYSTEM.ADR(R[param1]), cmd)
|opNEG: R[param1] := -R[param1]
|opNOT: R[param1] := ORD(-BITS(R[param1]))
|opNOP:
|opXCHG: i := R[param1]; R[param1] := R[param2]; R[param2] := i
|opLDB: i := param1 MOD 256; SYSTEM.GET8(R[param1 DIV 256] + param2, R[i]); R[i] := R[i] MOD 256
|opLDH: i := param1 MOD 256; SYSTEM.GET16(R[param1 DIV 256] + param2, R[i]); R[i] := R[i] MOD 65536
|opLDW: SYSTEM.GET32(R[param1 DIV 256] + param2, R[param1 MOD 256]);
$IF (CPU_X8664)
R[param1 MOD 256] := R[param1 MOD 256] MOD 100000000H
$END
|opLDD: SYSTEM.GET(R[param1 DIV 256] + param2, R[param1 MOD 256])
|opLLA: SYSTEM.GET(SYSTEM.ADR(Labels[param2]), R[param1])
|opJMP: cmd := Labels[param1]
|opMOV: R[param1] := R[param2]
|opMOVC: R[param1] := param2
|opMUL: R[param1] := R[param1] * R[param2]
|opMULC: R[param1] := R[param1] * param2
|opADD: INC(R[param1], R[param2])
|opADDC: INC(R[param1], param2)
|opSUB: DEC(R[param1], R[param2])
|opSUBC: DEC(R[param1], param2)
|opDIV: R[param1] := R[param1] DIV R[param2]
|opDIVC: R[param1] := R[param1] DIV param2
|opMOD: R[param1] := R[param1] MOD R[param2]
|opMODC: R[param1] := R[param1] MOD param2
|opSTB: SYSTEM.PUT8(R[param1 DIV 256] + param2, R[param1 MOD 256])
|opSTH: SYSTEM.PUT16(R[param1 DIV 256] + param2, R[param1 MOD 256])
|opSTW: SYSTEM.PUT32(R[param1 DIV 256] + param2, R[param1 MOD 256])
|opSTD: SYSTEM.PUT(R[param1 DIV 256] + param2, R[param1 MOD 256])
|opSTBC: SYSTEM.PUT8(R[param1], param2)
|opSTHC: SYSTEM.PUT16(R[param1], param2)
|opSTWC: SYSTEM.PUT32(R[param1], param2)
|opSTDC: SYSTEM.PUT(R[param1], param2)
|opAND: R[param1] := ORD(BITS(R[param1]) * BITS(R[param2]))
|opANDC: R[param1] := ORD(BITS(R[param1]) * BITS(param2))
|opOR: R[param1] := ORD(BITS(R[param1]) + BITS(R[param2]))
|opORC: R[param1] := ORD(BITS(R[param1]) + BITS(param2))
|opXOR: R[param1] := ORD(BITS(R[param1]) / BITS(R[param2]))
|opXORC: R[param1] := ORD(BITS(R[param1]) / BITS(param2))
|opASR: R[param1] := ASR(R[param1], R[param2])
|opASRC: R[param1] := ASR(R[param1], param2)
|opLSR: R[param1] := LSR(R[param1], R[param2])
|opLSRC: R[param1] := LSR(R[param1], param2)
|opLSL: R[param1] := LSL(R[param1], R[param2])
|opLSLC: R[param1] := LSL(R[param1], param2)
|opROR: R[param1] := ROR(R[param1], R[param2])
|opRORC: R[param1] := ROR(R[param1], param2)
|opLEA: R[param1 MOD 256] := Sections[param1 DIV 256] + param2
(*|opLABEL:*)
|opSYSCALL: syscall(R[param1])
|opADDRC: R[param1 MOD 256] := R[param1 DIV 256] + param2
|opCMP: fl := R[param1] < R[param2]; fe := R[param1] = R[param2]; fb := fl & (R[param1] >= 0)
|opCMPC: fl := R[param1] < param2; fe := R[param1] = param2; fb := fl & (R[param1] >= 0)
|opJEQ: IF fe THEN cmd := Labels[param1] END
|opJNE: IF ~fe THEN cmd := Labels[param1] END
|opJLT: IF fl THEN cmd := Labels[param1] END
|opJLE: IF fl OR fe THEN cmd := Labels[param1] END
|opJGT: IF ~fl & ~fe THEN cmd := Labels[param1] END
|opJGE: IF ~fl THEN cmd := Labels[param1] END
|opSEQ: R[param1] := ORD(fe)
|opSNE: R[param1] := ORD(~fe)
|opSLT: R[param1] := ORD(fl)
|opSLE: R[param1] := ORD(fl OR fe)
|opSGT: R[param1] := ORD(~fl & ~fe)
|opSGE: R[param1] := ORD(~fl)
|opJBT: IF fb THEN cmd := Labels[param1] END
|opBIT: R[param1] := ORD({R[param2]})
END;
cmd := cmd.next
END
END exec;
PROCEDURE disasm (name: ARRAY OF CHAR; t_count, c_count, glob, heap: INTEGER);
VAR
cmd: COMMAND;
param1, param2, i, t, ptr: INTEGER;
b: BYTE;
Names: ARRAY 5, 16 OF CHAR;
PROCEDURE String (s: ARRAY OF CHAR);
VAR
n: INTEGER;
BEGIN
n := LENGTH(s);
IF n > LEN(buf) - cnt THEN
ASSERT(File.Write(F, SYSTEM.ADR(buf[0]), cnt) = cnt);
cnt := 0
END;
SYSTEM.MOVE(SYSTEM.ADR(s[0]), SYSTEM.ADR(buf[0]) + cnt, n);
INC(cnt, n)
END String;
PROCEDURE Ln;
BEGIN
String(0DX + 0AX)
END Ln;
PROCEDURE hexdgt (n: INTEGER): CHAR;
BEGIN
IF n < 10 THEN
INC(n, ORD("0"))
ELSE
INC(n, ORD("A") - 10)
END
RETURN CHR(n)
END hexdgt;
PROCEDURE Hex (x: INTEGER);
VAR
str: ARRAY 19 OF CHAR;
n: INTEGER;
BEGIN
n := szWORD * 2 + 2;
str[n] := 0X;
WHILE n > 2 DO
str[n - 1] := hexdgt(x MOD 16);
x := x DIV 16;
DEC(n)
END;
str[1] := "x";
str[0] := "0";
String(str)
END Hex;
PROCEDURE Byte (x: BYTE);
VAR
str: ARRAY 5 OF CHAR;
BEGIN
str[4] := 0X;
str[3] := hexdgt(x MOD 16);
str[2] := hexdgt(x DIV 16);
str[1] := "x";
str[0] := "0";
String(str)
END Byte;
PROCEDURE Reg (n: INTEGER);
VAR
s: ARRAY 2 OF CHAR;
BEGIN
IF n = BP THEN
String("BP")
ELSIF n = SP THEN
String("SP")
ELSE
String("R");
s[1] := 0X;
IF n >= 10 THEN
s[0] := CHR(n DIV 10 + ORD("0"));
String(s)
END;
s[0] := CHR(n MOD 10 + ORD("0"));
String(s)
END
END Reg;
PROCEDURE Reg2 (r1, r2: INTEGER);
BEGIN
Reg(r1); String(", "); Reg(r2)
END Reg2;
PROCEDURE RegC (r, c: INTEGER);
BEGIN
Reg(r); String(", "); Hex(c)
END RegC;
PROCEDURE RegL (r, label: INTEGER);
BEGIN
Reg(r); String(", L"); Hex(label)
END RegL;
BEGIN
Names[Types] := "TYPES";
Names[Strings] := "STRINGS";
Names[Global] := "GLOBAL";
Names[Heap] := "HEAP";
Names[Stack] := "STACK";
F := File.Create(name);
ASSERT(F > 0);
cnt := 0;
String("CODE:"); Ln;
cmd := first;
WHILE cmd # NIL DO
param1 := cmd.param1;
param2 := cmd.param2;
CASE cmd.op OF
|opSTOP: String("STOP")
|opRET: String("RET")
|opENTER: String("ENTER "); Hex(param1)
|opPOP: String("POP "); Reg(param1)
|opNEG: String("NEG "); Reg(param1)
|opNOT: String("NOT "); Reg(param1)
|opNOP: String("NOP")
|opXCHG: String("XCHG "); Reg2(param1, param2)
|opLDB: String("LDB "); Reg(param1 MOD 256); String(", ["); Reg(param1 DIV 256); String(" + "); Hex(param2); String("]")
|opLDH: String("LDH "); Reg(param1 MOD 256); String(", ["); Reg(param1 DIV 256); String(" + "); Hex(param2); String("]")
|opLDW: String("LDW "); Reg(param1 MOD 256); String(", ["); Reg(param1 DIV 256); String(" + "); Hex(param2); String("]")
|opLDD: String("LDD "); Reg(param1 MOD 256); String(", ["); Reg(param1 DIV 256); String(" + "); Hex(param2); String("]")
|opPUSH: String("PUSH "); Reg(param1)
|opPUSHC: String("PUSH "); Hex(param1)
|opLLA: String("LLA "); RegL(param1, param2)
|opJMP: String("JMP L"); Hex(param1)
|opCALL: String("CALL L"); Hex(param1)
|opCALLI: String("CALL "); Reg(param1)
|opMOV: String("MOV "); Reg2(param1, param2)
|opMOVC: String("MOV "); RegC(param1, param2)
|opMUL: String("MUL "); Reg2(param1, param2)
|opMULC: String("MUL "); RegC(param1, param2)
|opADD: String("ADD "); Reg2(param1, param2)
|opADDC: String("ADD "); RegC(param1, param2)
|opSUB: String("SUB "); Reg2(param1, param2)
|opSUBC: String("SUB "); RegC(param1, param2)
|opDIV: String("DIV "); Reg2(param1, param2)
|opDIVC: String("DIV "); RegC(param1, param2)
|opMOD: String("MOD "); Reg2(param1, param2)
|opMODC: String("MOD "); RegC(param1, param2)
|opSTB: String("STB ["); Reg(param1 DIV 256); String(" + "); Hex(param2); String("], "); Reg(param1 MOD 256)
|opSTH: String("STH ["); Reg(param1 DIV 256); String(" + "); Hex(param2); String("], "); Reg(param1 MOD 256)
|opSTW: String("STW ["); Reg(param1 DIV 256); String(" + "); Hex(param2); String("], "); Reg(param1 MOD 256)
|opSTD: String("STD ["); Reg(param1 DIV 256); String(" + "); Hex(param2); String("], "); Reg(param1 MOD 256)
|opSTBC: String("STB ["); Reg(param1); String("], "); Hex(param2)
|opSTHC: String("STH ["); Reg(param1); String("], "); Hex(param2)
|opSTWC: String("STW ["); Reg(param1); String("], "); Hex(param2)
|opSTDC: String("STD ["); Reg(param1); String("], "); Hex(param2)
|opAND: String("AND "); Reg2(param1, param2)
|opANDC: String("AND "); RegC(param1, param2)
|opOR: String("OR "); Reg2(param1, param2)
|opORC: String("OR "); RegC(param1, param2)
|opXOR: String("XOR "); Reg2(param1, param2)
|opXORC: String("XOR "); RegC(param1, param2)
|opASR: String("ASR "); Reg2(param1, param2)
|opASRC: String("ASR "); RegC(param1, param2)
|opLSR: String("LSR "); Reg2(param1, param2)
|opLSRC: String("LSR "); RegC(param1, param2)
|opLSL: String("LSL "); Reg2(param1, param2)
|opLSLC: String("LSL "); RegC(param1, param2)
|opROR: String("ROR "); Reg2(param1, param2)
|opRORC: String("ROR "); RegC(param1, param2)
|opLEA: String("LEA "); Reg(param1 MOD 256); String(", "); String(Names[param1 DIV 256]); String(" + "); Hex(param2)
|opADDRC: String("ADD "); Reg(param1 MOD 256); String(", "); Reg(param1 DIV 256); String(", "); Hex(param2)
|opLABEL: String("L"); Hex(param1); String(":")
|opSYSCALL: String("SYSCALL "); Reg(param1)
|opCMP: String("CMP "); Reg2(param1, param2)
|opCMPC: String("CMP "); RegC(param1, param2)
|opJEQ: String("JEQ L"); Hex(param1)
|opJNE: String("JNE L"); Hex(param1)
|opJLT: String("JLT L"); Hex(param1)
|opJLE: String("JLE L"); Hex(param1)
|opJGT: String("JGT L"); Hex(param1)
|opJGE: String("JGE L"); Hex(param1)
|opSEQ: String("SEQ "); Reg(param1)
|opSNE: String("SNE "); Reg(param1)
|opSLT: String("SLT "); Reg(param1)
|opSLE: String("SLE "); Reg(param1)
|opSGT: String("SGT "); Reg(param1)
|opSGE: String("SGE "); Reg(param1)
|opJBT: String("JBT L"); Hex(param1)
|opBIT: String("BIT "); Reg2(param1, param2)
END;
Ln;
cmd := cmd.next
END;
String("TYPES:");
ptr := Sections[Types];
FOR i := 0 TO t_count - 1 DO
IF i MOD 4 = 0 THEN
Ln; String("WORD ")
ELSE
String(", ")
END;
SYSTEM.GET(ptr, t); INC(ptr, szWORD);
Hex(t)
END;
Ln;
String("STRINGS:");
ptr := Sections[Strings];
FOR i := 0 TO c_count - 1 DO
IF i MOD 8 = 0 THEN
Ln; String("BYTE ")
ELSE
String(", ")
END;
SYSTEM.GET8(ptr, b); INC(ptr);
Byte(b)
END;
Ln;
String("GLOBAL:"); Ln;
String("WORDS "); Hex(glob); Ln;
String("HEAP:"); Ln;
String("WORDS "); Hex(heap); Ln;
String("STACK:"); Ln;
String("WORDS 8"); Ln;
ASSERT(File.Write(F, SYSTEM.ADR(buf[0]), cnt) = cnt);
File.Close(F)
END disasm;
PROCEDURE GetCommand (adr: INTEGER): COMMAND;
VAR
op, param1, param2: INTEGER;
res: COMMAND;
BEGIN
op := 0; param1 := 0; param2 := 0;
SYSTEM.GET(adr, op);
SYSTEM.GET(adr + szWORD, param1);
SYSTEM.GET(adr + szWORD * 2, param2);
NEW(res);
res.op := op;
res.param1 := param1;
res.param2 := param2;
res.next := NIL
RETURN res
END GetCommand;
PROCEDURE main;
VAR
name, param: ARRAY 1024 OF CHAR;
cmd: COMMAND;
file, fsize, n: INTEGER;
descr: ARRAY 12 OF INTEGER;
offTypes, offStrings, GlobalSize, HeapStackSize, DescrSize: INTEGER;
BEGIN
Out.Open;
Args.GetArg(1, name);
F := File.Open(name, File.OPEN_R);
IF F > 0 THEN
DescrSize := LEN(descr) * SYSTEM.SIZE(INTEGER);
fsize := File.Seek(F, 0, File.SEEK_END);
ASSERT(fsize > DescrSize);
file := API._NEW(fsize);
ASSERT(file # 0);
n := File.Seek(F, 0, File.SEEK_BEG);
ASSERT(fsize = File.Read(F, file, fsize));
File.Close(F);
SYSTEM.MOVE(file + fsize - DescrSize, SYSTEM.ADR(descr[0]), DescrSize);
offTypes := descr[0];
ASSERT(offTypes < fsize - DescrSize);
ASSERT(offTypes > 0);
ASSERT(offTypes MOD (3 * szWORD) = 0);
offStrings := descr[1];
ASSERT(offStrings < fsize - DescrSize);
ASSERT(offStrings > 0);
ASSERT(offStrings MOD szWORD = 0);
ASSERT(offStrings > offTypes);
GlobalSize := descr[2];
ASSERT(GlobalSize > 0);
HeapStackSize := descr[3];
ASSERT(HeapStackSize > 0);
Sections[Types] := API._NEW(offStrings - offTypes);
ASSERT(Sections[Types] # 0);
SYSTEM.MOVE(file + offTypes, Sections[Types], offStrings - offTypes);
Sections[Strings] := API._NEW(fsize - offStrings - DescrSize);
ASSERT(Sections[Strings] # 0);
SYSTEM.MOVE(file + offStrings, Sections[Strings], fsize - offStrings - DescrSize);
Sections[Global] := API._NEW(GlobalSize * szWORD);
ASSERT(Sections[Global] # 0);
Sections[Heap] := API._NEW(HeapStackSize * szWORD);
ASSERT(Sections[Heap] # 0);
Sections[Stack] := Sections[Heap] + HeapStackSize * szWORD - szWORD*8;
n := offTypes DIV (3 * szWORD);
first := GetCommand(file + offTypes - n * (3 * szWORD));
first.prev := NIL;
last := first;
DEC(n);
WHILE n > 0 DO
cmd := GetCommand(file + offTypes - n * (3 * szWORD));
IF cmd.op = opLABEL THEN
Labels[cmd.param1] := cmd
END;
last.next := cmd;
cmd.prev := last;
last := cmd;
DEC(n)
END;
file := API._DISPOSE(file);
Args.GetArg(2, param);
IF param = "-dis" THEN
Args.GetArg(3, name);
IF name # "" THEN
disasm(name, (offStrings - offTypes) DIV szWORD, fsize - offStrings - DescrSize, GlobalSize, HeapStackSize)
END
ELSIF param = "-run" THEN
exec(Labels, first, last, Sections)
END
ELSE
Out.String("file not found"); Out.Ln
END
END main;
BEGIN
main
END RVMxI.