(*
BSD 2-Clause License
Copyright (c) 2018-2022, Anton Krotov
All rights reserved.
*)
MODULE X86;
IMPORT IL, REG, UTILS, LISTS, BIN, PE32, KOS, MSCOFF, ELF, PROG,
CHL := CHUNKLISTS, PATHS, TARGETS, ERRORS;
CONST
eax = REG.R0; ecx = REG.R1; edx = REG.R2;
al = eax; cl = ecx; dl = edx; ah = 4;
ax = eax; cx = ecx; dx = edx;
esp = 4;
ebp = 5;
MAX_FR = 7;
sete = 94H; setne = 95H; setl = 9CH; setge = 9DH; setle = 9EH; setg = 9FH; setc = 92H; setnc = 93H;
je = 84H; jne = 85H; jl = 8CH; jge = 8DH; jle = 8EH; jg = 8FH; jb = 82H; jnb = 83H;
CODECHUNK = 8;
FPR_ERR = 41;
TYPE
COMMAND = IL.COMMAND;
ANYCODE = POINTER TO RECORD (LISTS.ITEM)
offset: INTEGER
END;
CODE = POINTER TO RECORD (ANYCODE)
code: ARRAY CODECHUNK OF BYTE;
length: INTEGER
END;
LABEL = POINTER TO RECORD (ANYCODE)
label: INTEGER
END;
JUMP = POINTER TO RECORD (ANYCODE)
label, diff: INTEGER;
short: BOOLEAN
END;
JMP = POINTER TO RECORD (JUMP)
END;
JCC = POINTER TO RECORD (JUMP)
jmp: INTEGER
END;
CALL = POINTER TO RECORD (JUMP)
END;
RELOC = POINTER TO RECORD (ANYCODE)
op, value: INTEGER
END;
VAR
R: REG.REGS;
program: BIN.PROGRAM;
CodeList: LISTS.LIST;
tcount, LocVarSize, mainLocVarSize: INTEGER;
FR: ARRAY 1000 OF INTEGER;
fname: PATHS.PATH;
FltConstLabel, mainFltConstLabel: LABEL;
PROCEDURE OutByte* (n: BYTE);
VAR
c: CODE;
last: ANYCODE;
BEGIN
last := CodeList.last(ANYCODE);
IF (last IS CODE) & (last(CODE).length < CODECHUNK) THEN
c := last(CODE);
c.code[c.length] := n;
INC(c.length)
ELSE
NEW(c);
c.code[0] := n;
c.length := 1;
LISTS.push(CodeList, c)
END
END OutByte;
PROCEDURE OutInt (n: INTEGER);
BEGIN
OutByte(n MOD 256);
OutByte(UTILS.Byte(n, 1));
OutByte(UTILS.Byte(n, 2));
OutByte(UTILS.Byte(n, 3))
END OutInt;
PROCEDURE OutByte2 (a, b: BYTE);
BEGIN
OutByte(a);
OutByte(b)
END OutByte2;
PROCEDURE OutByte3 (a, b, c: BYTE);
BEGIN
OutByte(a);
OutByte(b);
OutByte(c)
END OutByte3;
PROCEDURE OutWord (n: INTEGER);
BEGIN
ASSERT((0 <= n) & (n <= 65535));
OutByte2(n MOD 256, n DIV 256)
END OutWord;
PROCEDURE isByte* (n: INTEGER): BOOLEAN;
RETURN (-128 <= n) & (n <= 127)
END isByte;
PROCEDURE short (n: INTEGER): INTEGER;
RETURN 2 * ORD(isByte(n))
END short;
PROCEDURE long (n: INTEGER): INTEGER;
RETURN 40H * ORD(~isByte(n))
END long;
PROCEDURE OutIntByte (n: INTEGER);
BEGIN
IF isByte(n) THEN
OutByte(n MOD 256)
ELSE
OutInt(n)
END
END OutIntByte;
PROCEDURE shift* (op, reg: INTEGER);
BEGIN
CASE op OF
|IL.opASR, IL.opASR1, IL.opASR2: OutByte(0F8H + reg)
|IL.opROR, IL.opROR1, IL.opROR2: OutByte(0C8H + reg)
|IL.opLSL, IL.opLSL1, IL.opLSL2: OutByte(0E0H + reg)
|IL.opLSR, IL.opLSR1, IL.opLSR2: OutByte(0E8H + reg)
END
END shift;
PROCEDURE oprr (op: BYTE; reg1, reg2: INTEGER); (* op reg1, reg2 *)
BEGIN
OutByte2(op, 0C0H + 8 * reg2 + reg1)
END oprr;
PROCEDURE mov (reg1, reg2: INTEGER); (* mov reg1, reg2 *)
BEGIN
oprr(89H, reg1, reg2)
END mov;
PROCEDURE xchg (reg1, reg2: INTEGER); (* xchg reg1, reg2 *)
BEGIN
IF eax IN {reg1, reg2} THEN
OutByte(90H + reg1 + reg2)
ELSE
oprr(87H, reg1, reg2)
END
END xchg;
PROCEDURE pop (reg: INTEGER);
BEGIN
OutByte(58H + reg) (* pop reg *)
END pop;
PROCEDURE push (reg: INTEGER);
BEGIN
OutByte(50H + reg) (* push reg *)
END push;
PROCEDURE xor (reg1, reg2: INTEGER); (* xor reg1, reg2 *)
BEGIN
oprr(31H, reg1, reg2)
END xor;
PROCEDURE movrc (reg, n: INTEGER);
BEGIN
IF n = 0 THEN
xor(reg, reg)
ELSE
OutByte(0B8H + reg); (* mov reg, n *)
OutInt(n)
END
END movrc;
PROCEDURE pushc* (n: INTEGER);
BEGIN
OutByte(68H + short(n)); (* push n *)
OutIntByte(n)
END pushc;
PROCEDURE test (reg: INTEGER);
BEGIN
OutByte2(85H, 0C0H + reg * 9) (* test reg, reg *)
END test;
PROCEDURE neg (reg: INTEGER);
BEGIN
OutByte2(0F7H, 0D8H + reg) (* neg reg *)
END neg;
PROCEDURE not (reg: INTEGER);
BEGIN
OutByte2(0F7H, 0D0H + reg) (* not reg *)
END not;
PROCEDURE add (reg1, reg2: INTEGER); (* add reg1, reg2 *)
BEGIN
oprr(01H, reg1, reg2)
END add;
PROCEDURE oprc* (op, reg, n: INTEGER);
BEGIN
IF (reg = eax) & ~isByte(n) THEN
CASE op OF
|0C0H: op := 05H (* add *)
|0E8H: op := 2DH (* sub *)
|0F8H: op := 3DH (* cmp *)
|0E0H: op := 25H (* and *)
|0C8H: op := 0DH (* or *)
|0F0H: op := 35H (* xor *)
END;
OutByte(op);
OutInt(n)
ELSE
OutByte2(81H + short(n), op + reg MOD 8);
OutIntByte(n)
END
END oprc;
PROCEDURE andrc (reg, n: INTEGER); (* and reg, n *)
BEGIN
oprc(0E0H, reg, n)
END andrc;
PROCEDURE orrc (reg, n: INTEGER); (* or reg, n *)
BEGIN
oprc(0C8H, reg, n)
END orrc;
PROCEDURE xorrc (reg, n: INTEGER); (* xor reg, n *)
BEGIN
oprc(0F0H, reg, n)
END xorrc;
PROCEDURE addrc (reg, n: INTEGER); (* add reg, n *)
BEGIN
oprc(0C0H, reg, n)
END addrc;
PROCEDURE subrc (reg, n: INTEGER); (* sub reg, n *)
BEGIN
oprc(0E8H, reg, n)
END subrc;
PROCEDURE cmprc (reg, n: INTEGER); (* cmp reg, n *)
BEGIN
IF n = 0 THEN
test(reg)
ELSE
oprc(0F8H, reg, n)
END
END cmprc;
PROCEDURE cmprr (reg1, reg2: INTEGER); (* cmp reg1, reg2 *)
BEGIN
oprr(39H, reg1, reg2)
END cmprr;
PROCEDURE setcc* (cc, reg: INTEGER); (* setcc reg *)
BEGIN
IF reg >= 8 THEN
OutByte(41H)
END;
OutByte3(0FH, cc, 0C0H + reg MOD 8)
END setcc;
PROCEDURE ret*;
BEGIN
OutByte(0C3H)
END ret;
PROCEDURE drop;
BEGIN
REG.Drop(R)
END drop;
PROCEDURE GetAnyReg (): INTEGER;
RETURN REG.GetAnyReg(R)
END GetAnyReg;
PROCEDURE cond* (op: INTEGER): INTEGER;
VAR
res: INTEGER;
BEGIN
CASE op OF
|IL.opGT, IL.opGTC: res := jg
|IL.opGE, IL.opGEC: res := jge
|IL.opLT, IL.opLTC: res := jl
|IL.opLE, IL.opLEC: res := jle
|IL.opEQ, IL.opEQC: res := je
|IL.opNE, IL.opNEC: res := jne
END
RETURN res
END cond;
PROCEDURE inv0* (op: INTEGER): INTEGER;
RETURN ORD(BITS(op) / {0})
END inv0;
PROCEDURE Reloc* (op, value: INTEGER);
VAR
reloc: RELOC;
BEGIN
NEW(reloc);
reloc.op := op;
reloc.value := value;
LISTS.push(CodeList, reloc)
END Reloc;
PROCEDURE PushFlt (label: LABEL; value: REAL);
VAR
a, b, n: INTEGER;
PROCEDURE pushImm (label: LABEL; value: INTEGER);
VAR
c: CODE;
i: INTEGER;
BEGIN
NEW(c);
IF isByte(value) THEN
c.code[0] := 6AH;
c.code[1] := value MOD 256;
c.length := 2
ELSE
c.code[0] := 68H;
FOR i := 1 TO 4 DO
c.code[i] := UTILS.Byte(value, i - 1)
END;
c.length := 5
END;
LISTS.insertL(CodeList, label, c)
END pushImm;
BEGIN
n := UTILS.splitf(value, a, b);
pushImm(label, b);
pushImm(label, a)
END PushFlt;
PROCEDURE jcc* (cc, label: INTEGER);
VAR
j: JCC;
BEGIN
NEW(j);
j.label := label;
j.jmp := cc;
j.short := FALSE;
LISTS.push(CodeList, j)
END jcc;
PROCEDURE jmp* (label: INTEGER);
VAR
j: JMP;
BEGIN
NEW(j);
j.label := label;
j.short := FALSE;
LISTS.push(CodeList, j)
END jmp;
PROCEDURE call* (label: INTEGER);
VAR
c: CALL;
BEGIN
NEW(c);
c.label := label;
c.short := TRUE;
LISTS.push(CodeList, c)
END call;
PROCEDURE Pic (reg, opcode, value: INTEGER);
BEGIN
OutByte(0E8H); OutInt(0); (* call L
L: *)
pop(reg);
OutByte2(081H, 0C0H + reg); (* add reg, ... *)
Reloc(opcode, value)
END Pic;
PROCEDURE CallRTL (pic: BOOLEAN; proc: INTEGER);
VAR
label: INTEGER;
reg1: INTEGER;
BEGIN
label := IL.codes.rtl[proc];
IF label < 0 THEN
label := -label;
IF pic THEN
reg1 := GetAnyReg();
Pic(reg1, BIN.PICIMP, label);
OutByte2(0FFH, 010H + reg1); (* call dword[reg1] *)
drop
ELSE
OutByte2(0FFH, 015H); (* call dword[label] *)
Reloc(BIN.RIMP, label)
END
ELSE
call(label)
END
END CallRTL;
PROCEDURE SetLabel* (label: INTEGER);
VAR
L: LABEL;
BEGIN
NEW(L);
L.label := label;
LISTS.push(CodeList, L)
END SetLabel;
PROCEDURE fixup*;
VAR
code: ANYCODE;
count, i: INTEGER;
shorted: BOOLEAN;
jump: JUMP;
BEGIN
REPEAT
shorted := FALSE;
count := 0;
code := CodeList.first(ANYCODE);
WHILE code # NIL DO
code.offset := count;
CASE code OF
|CODE: INC(count, code.length)
|LABEL: BIN.SetLabel(program, code.label, count)
|JMP: IF code.short THEN INC(count, 2) ELSE INC(count, 5) END; code.offset := count
|JCC: IF code.short THEN INC(count, 2) ELSE INC(count, 6) END; code.offset := count
|CALL: INC(count, 5); code.offset := count
|RELOC: INC(count, 4)
END;
code := code.next(ANYCODE)
END;
code := CodeList.first(ANYCODE);
WHILE code # NIL DO
IF code IS JUMP THEN
jump := code(JUMP);
jump.diff := BIN.GetLabel(program, jump.label) - code.offset;
IF ~jump.short & isByte(jump.diff) THEN
jump.short := TRUE;
shorted := TRUE
END
END;
code := code.next(ANYCODE)
END
UNTIL ~shorted;
code := CodeList.first(ANYCODE);
WHILE code # NIL DO
CASE code OF
|CODE:
FOR i := 0 TO code.length - 1 DO
BIN.PutCode(program, code.code[i])
END
|LABEL:
|JMP:
IF code.short THEN
BIN.PutCode(program, 0EBH);
BIN.PutCode(program, code.diff MOD 256)
ELSE
BIN.PutCode(program, 0E9H);
BIN.PutCode32LE(program, code.diff)
END
|JCC:
IF code.short THEN
BIN.PutCode(program, code.jmp - 16);
BIN.PutCode(program, code.diff MOD 256)
ELSE
BIN.PutCode(program, 0FH);
BIN.PutCode(program, code.jmp);
BIN.PutCode32LE(program, code.diff)
END
|CALL:
BIN.PutCode(program, 0E8H);
BIN.PutCode32LE(program, code.diff)
|RELOC:
BIN.PutReloc(program, code.op);
BIN.PutCode32LE(program, code.value)
END;
code := code.next(ANYCODE)
END
END fixup;
PROCEDURE UnOp (VAR reg: INTEGER);
BEGIN
REG.UnOp(R, reg)
END UnOp;
PROCEDURE BinOp (VAR reg1, reg2: INTEGER);
BEGIN
REG.BinOp(R, reg1, reg2)
END BinOp;
PROCEDURE PushAll (NumberOfParameters: INTEGER);
BEGIN
REG.PushAll(R);
DEC(R.pushed, NumberOfParameters)
END PushAll;
PROCEDURE NewLabel (): INTEGER;
BEGIN
BIN.NewLabel(program)
RETURN IL.NewLabel()
END NewLabel;
PROCEDURE GetRegA;
BEGIN
ASSERT(REG.GetReg(R, eax))
END GetRegA;
PROCEDURE fcmp;
BEGIN
GetRegA;
OutByte2(0DAH, 0E9H); (* fucompp *)
OutByte3(09BH, 0DFH, 0E0H); (* fstsw ax *)
OutByte(09EH); (* sahf *)
OutByte(0B8H); OutInt(0) (* mov eax, 0 *)
END fcmp;
PROCEDURE movzx* (reg1, reg2, offs: INTEGER; word: BOOLEAN); (* movzx reg1, byte/word[reg2 + offs] *)
VAR
b: BYTE;
BEGIN
OutByte2(0FH, 0B6H + ORD(word));
IF (offs = 0) & (reg2 # ebp) THEN
b := 0
ELSE
b := 40H + long(offs)
END;
OutByte(b + (reg1 MOD 8) * 8 + reg2 MOD 8);
IF reg2 = esp THEN
OutByte(24H)
END;
IF b # 0 THEN
OutIntByte(offs)
END
END movzx;
PROCEDURE _movrm* (reg1, reg2, offs, size: INTEGER; mr: BOOLEAN);
VAR
b: BYTE;
BEGIN
IF size = 16 THEN
OutByte(66H)
END;
IF (reg1 >= 8) OR (reg2 >= 8) OR (size = 64) THEN
OutByte(40H + reg2 DIV 8 + 4 * (reg1 DIV 8) + 8 * ORD(size = 64))
END;
OutByte(8BH - 2 * ORD(mr) - ORD(size = 8));
IF (offs = 0) & (reg2 # ebp) THEN
b := 0
ELSE
b := 40H + long(offs)
END;
OutByte(b + (reg1 MOD 8) * 8 + reg2 MOD 8);
IF reg2 = esp THEN
OutByte(24H)
END;
IF b # 0 THEN
OutIntByte(offs)
END
END _movrm;
PROCEDURE movmr (reg1, offs, reg2: INTEGER); (* mov dword[reg1+offs], reg2 *)
BEGIN
_movrm(reg2, reg1, offs, 32, TRUE)
END movmr;
PROCEDURE movrm (reg1, reg2, offs: INTEGER); (* mov reg1, dword[reg2 + offs] *)
BEGIN
_movrm(reg1, reg2, offs, 32, FALSE)
END movrm;
PROCEDURE movmr8* (reg1, offs, reg2: INTEGER); (* mov byte[reg1+offs], reg2_8 *)
BEGIN
_movrm(reg2, reg1, offs, 8, TRUE)
END movmr8;
PROCEDURE movrm8* (reg1, reg2, offs: INTEGER); (* mov reg1_8, byte[reg2+offs] *)
BEGIN
_movrm(reg1, reg2, offs, 8, FALSE)
END movrm8;
PROCEDURE movmr16* (reg1, offs, reg2: INTEGER); (* mov word[reg1+offs], reg2_16 *)
BEGIN
_movrm(reg2, reg1, offs, 16, TRUE)
END movmr16;
PROCEDURE movrm16* (reg1, reg2, offs: INTEGER); (* mov reg1_16, word[reg2+offs] *)
BEGIN
_movrm(reg1, reg2, offs, 16, FALSE)
END movrm16;
PROCEDURE pushm* (reg, offs: INTEGER); (* push qword[reg+offs] *)
VAR
b: BYTE;
BEGIN
IF reg >= 8 THEN
OutByte(41H)
END;
OutByte(0FFH);
IF (offs = 0) & (reg # ebp) THEN
b := 30H
ELSE
b := 70H + long(offs)
END;
OutByte(b + reg MOD 8);
IF reg = esp THEN
OutByte(24H)
END;
IF b # 30H THEN
OutIntByte(offs)
END
END pushm;
PROCEDURE LoadFltConst (value: REAL);
BEGIN
PushFlt(FltConstLabel, value);
INC(LocVarSize, 8);
IF FltConstLabel = mainFltConstLabel THEN
mainLocVarSize := LocVarSize
END;
OutByte2(0DDH, 045H + long(-LocVarSize)); (* fld qword[ebp - LocVarSize] *)
OutIntByte(-LocVarSize)
END LoadFltConst;
PROCEDURE translate (pic: BOOLEAN; stroffs: INTEGER);
VAR
cmd, next: COMMAND;
reg1, reg2, reg3, fr: INTEGER;
n, a, label, cc: INTEGER;
opcode, param1, param2: INTEGER;
float: REAL;
BEGIN
cmd := IL.codes.commands.first(COMMAND);
fr := -1;
WHILE cmd # NIL DO
param1 := cmd.param1;
param2 := cmd.param2;
opcode := cmd.opcode;
CASE opcode OF
|IL.opJMP:
jmp(param1)
|IL.opCALL:
call(param1)
|IL.opCALLI:
IF pic THEN
reg1 := GetAnyReg();
Pic(reg1, BIN.PICIMP, param1);
OutByte2(0FFH, 010H + reg1); (* call dword[reg1] *)
drop
ELSE
OutByte2(0FFH, 015H); (* call dword[L] *)
Reloc(BIN.RIMP, param1)
END
|IL.opCALLP:
UnOp(reg1);
OutByte2(0FFH, 0D0H + reg1); (* call reg1 *)
drop;
ASSERT(R.top = -1)
|IL.opFASTCALL:
IF param2 = 1 THEN
pop(ecx)
ELSIF param2 = 2 THEN
pop(ecx);
pop(edx)
END
|IL.opPRECALL:
PushAll(0);
IF (param2 # 0) & (fr >= 0) THEN
subrc(esp, 8)
END;
INC(FR[0]);
FR[FR[0]] := fr + 1;
WHILE fr >= 0 DO
subrc(esp, 8);
OutByte3(0DDH, 01CH, 024H); (* fstp qword[esp] *)
DEC(fr)
END;
ASSERT(fr = -1)
|IL.opALIGN16:
ASSERT(eax IN R.regs);
mov(eax, esp);
andrc(esp, -16);
n := (3 - param2 MOD 4) * 4;
IF n > 0 THEN
subrc(esp, n)
END;
push(eax)
|IL.opRESF, IL.opRES:
ASSERT(R.top = -1);
ASSERT(fr = -1);
n := FR[FR[0]]; DEC(FR[0]);
IF opcode = IL.opRESF THEN
INC(fr);
IF n > 0 THEN
OutByte3(0DDH, 5CH + long(n * 8), 24H);
OutIntByte(n * 8); (* fstp qword[esp + n*8] *)
DEC(fr);
INC(n)
END;
IF fr + n > MAX_FR THEN
ERRORS.ErrorMsg(fname, param1, param2, FPR_ERR)
END
ELSE
GetRegA
END;
WHILE n > 0 DO
OutByte3(0DDH, 004H, 024H); (* fld qword[esp] *)
addrc(esp, 8);
INC(fr);
DEC(n)
END
|IL.opENTER:
ASSERT(R.top = -1);
SetLabel(param1);
IF cmd.param3 > 0 THEN
pop(eax);
IF cmd.param3 >= 2 THEN
push(edx)
END;
push(ecx);
push(eax)
END;
push(ebp);
mov(ebp, esp);
n := param2;
IF n > 4 THEN
movrc(ecx, n);
pushc(0); (* L: push 0 *)
OutByte2(0E2H, 0FCH) (* loop L *)
ELSE
WHILE n > 0 DO
pushc(0);
DEC(n)
END
END;
SetLabel(NewLabel());
FltConstLabel := CodeList.last(LABEL);
LocVarSize := param2 * 4
|IL.opLEAVE, IL.opLEAVER, IL.opLEAVEF:
IF opcode = IL.opLEAVER THEN
UnOp(reg1);
IF reg1 # eax THEN
mov(eax, reg1)
END;
drop
END;
ASSERT(R.top = -1);
IF opcode = IL.opLEAVEF THEN
DEC(fr)
END;
ASSERT(fr = -1);
IF LocVarSize > 0 THEN
mov(esp, ebp)
END;
pop(ebp);
IF param2 > 0 THEN
OutByte(0C2H); OutWord(param2 * 4 MOD 65536) (* ret param2*4 *)
ELSE
ret
END;
FltConstLabel := mainFltConstLabel;
LocVarSize := mainLocVarSize
|IL.opPUSHC:
pushc(param2)
|IL.opONERR:
pushc(param2);
jmp(param1)
|IL.opPARAM:
n := param2;
IF n = 1 THEN
UnOp(reg1);
push(reg1);
drop
ELSE
ASSERT(R.top + 1 <= n);
PushAll(n)
END
|IL.opCLEANUP:
IF param2 # 0 THEN
addrc(esp, param2 * 4)
END
|IL.opPOPSP:
pop(esp)
|IL.opCONST:
movrc(GetAnyReg(), param2)
|IL.opLABEL:
SetLabel(param1) (* L: *)
|IL.opNOP, IL.opAND, IL.opOR:
|IL.opGADR:
next := cmd.next(COMMAND);
IF next.opcode = IL.opADDC THEN
INC(param2, next.param2);
cmd := next
END;
reg1 := GetAnyReg();
IF pic THEN
Pic(reg1, BIN.PICBSS, param2)
ELSE
OutByte(0B8H + reg1); (* mov reg1, _bss + param2 *)
Reloc(BIN.RBSS, param2)
END
|IL.opLADR:
next := cmd.next(COMMAND);
n := param2 * 4;
IF next.opcode = IL.opADDC THEN
INC(n, next.param2);
cmd := next
END;
OutByte2(8DH, 45H + GetAnyReg() * 8 + long(n)); (* lea reg1, dword[ebp + n] *)
OutIntByte(n)
|IL.opVADR, IL.opLLOAD32:
movrm(GetAnyReg(), ebp, param2 * 4)
|IL.opSADR:
reg1 := GetAnyReg();
IF pic THEN
Pic(reg1, BIN.PICDATA, stroffs + param2);
ELSE
OutByte(0B8H + reg1); (* mov reg1, _data + stroffs + param2 *)
Reloc(BIN.RDATA, stroffs + param2)
END
|IL.opSAVEC:
UnOp(reg1);
OutByte2(0C7H, reg1); OutInt(param2); (* mov dword[reg1], param2 *)
drop
|IL.opSAVE8C:
UnOp(reg1);
OutByte3(0C6H, reg1, param2 MOD 256); (* mov byte[reg1], param2 *)
drop
|IL.opSAVE16C:
UnOp(reg1);
OutByte3(66H, 0C7H, reg1); OutWord(param2 MOD 65536); (* mov word[reg1], param2 *)
drop
|IL.opVLOAD32:
reg1 := GetAnyReg();
movrm(reg1, ebp, param2 * 4);
movrm(reg1, reg1, 0)
|IL.opGLOAD32:
reg1 := GetAnyReg();
IF pic THEN
Pic(reg1, BIN.PICBSS, param2);
movrm(reg1, reg1, 0)
ELSE
OutByte2(08BH, 05H + reg1 * 8); (* mov reg1, dword[_bss + param2] *)
Reloc(BIN.RBSS, param2)
END
|IL.opLOAD32:
UnOp(reg1);
movrm(reg1, reg1, 0)
|IL.opVLOAD8:
reg1 := GetAnyReg();
movrm(reg1, ebp, param2 * 4);
movzx(reg1, reg1, 0, FALSE)
|IL.opGLOAD8:
reg1 := GetAnyReg();
IF pic THEN
Pic(reg1, BIN.PICBSS, param2);
movzx(reg1, reg1, 0, FALSE)
ELSE
OutByte3(00FH, 0B6H, 05H + reg1 * 8); (* movzx reg1, byte[_bss + param2] *)
Reloc(BIN.RBSS, param2)
END
|IL.opLLOAD8:
movzx(GetAnyReg(), ebp, param2 * 4, FALSE)
|IL.opLOAD8:
UnOp(reg1);
movzx(reg1, reg1, 0, FALSE)
|IL.opVLOAD16:
reg1 := GetAnyReg();
movrm(reg1, ebp, param2 * 4);
movzx(reg1, reg1, 0, TRUE)
|IL.opGLOAD16:
reg1 := GetAnyReg();
IF pic THEN
Pic(reg1, BIN.PICBSS, param2);
movzx(reg1, reg1, 0, TRUE)
ELSE
OutByte3(00FH, 0B7H, 05H + reg1 * 8); (* movzx reg1, word[_bss + param2] *)
Reloc(BIN.RBSS, param2)
END
|IL.opLLOAD16:
movzx(GetAnyReg(), ebp, param2 * 4, TRUE)
|IL.opLOAD16:
UnOp(reg1);
movzx(reg1, reg1, 0, TRUE)
|IL.opUMINUS:
UnOp(reg1);
neg(reg1)
|IL.opADD:
BinOp(reg1, reg2);
add(reg1, reg2);
drop
|IL.opADDC:
IF param2 # 0 THEN
UnOp(reg1);
next := cmd.next(COMMAND);
CASE next.opcode OF
|IL.opLOAD32:
movrm(reg1, reg1, param2);
cmd := next
|IL.opLOAD16:
movzx(reg1, reg1, param2, TRUE);
cmd := next
|IL.opLOAD8:
movzx(reg1, reg1, param2, FALSE);
cmd := next
|IL.opLOAD32_PARAM:
pushm(reg1, param2);
drop;
cmd := next
ELSE
IF param2 = 1 THEN
OutByte(40H + reg1) (* inc reg1 *)
ELSIF param2 = -1 THEN
OutByte(48H + reg1) (* dec reg1 *)
ELSE
addrc(reg1, param2)
END
END
END
|IL.opSUB:
BinOp(reg1, reg2);
oprr(29H, reg1, reg2); (* sub reg1, reg2 *)
drop
|IL.opSUBR, IL.opSUBL:
UnOp(reg1);
IF param2 = 1 THEN
OutByte(48H + reg1) (* dec reg1 *)
ELSIF param2 = -1 THEN
OutByte(40H + reg1) (* inc reg1 *)
ELSIF param2 # 0 THEN
subrc(reg1, param2)
END;
IF opcode = IL.opSUBL THEN
neg(reg1)
END
|IL.opMULC:
IF (cmd.next(COMMAND).opcode = IL.opADD) & ((param2 = 2) OR (param2 = 4) OR (param2 = 8)) THEN
BinOp(reg1, reg2);
OutByte3(8DH, 04H + reg1 * 8, reg1 + reg2 * 8 + 40H * UTILS.Log2(param2)); (* lea reg1, [reg1 + reg2 * param2] *)
drop;
cmd := cmd.next(COMMAND)
ELSE
UnOp(reg1);
a := param2;
IF a > 1 THEN
n := UTILS.Log2(a)
ELSIF a < -1 THEN
n := UTILS.Log2(-a)
ELSE
n := -1
END;
IF a = 1 THEN
ELSIF a = -1 THEN
neg(reg1)
ELSIF a = 0 THEN
xor(reg1, reg1)
ELSE
IF n > 0 THEN
IF a < 0 THEN
neg(reg1)
END;
IF n # 1 THEN
OutByte3(0C1H, 0E0H + reg1, n) (* shl reg1, n *)
ELSE
OutByte2(0D1H, 0E0H + reg1) (* shl reg1, 1 *)
END
ELSE
OutByte2(69H + short(a), 0C0H + reg1 * 9); (* imul reg1, a *)
OutIntByte(a)
END
END
END
|IL.opMUL:
BinOp(reg1, reg2);
OutByte3(0FH, 0AFH, 0C0H + reg1 * 8 + reg2); (* imul reg1, reg2 *)
drop
|IL.opSAVE, IL.opSAVE32:
BinOp(reg2, reg1);
movmr(reg1, 0, reg2);
drop;
drop
|IL.opSAVE8:
BinOp(reg2, reg1);
movmr8(reg1, 0, reg2);
drop;
drop
|IL.opSAVE16:
BinOp(reg2, reg1);
movmr16(reg1, 0, reg2);
drop;
drop
|IL.opSAVEP:
UnOp(reg1);
IF pic THEN
reg2 := GetAnyReg();
Pic(reg2, BIN.PICCODE, param2);
movmr(reg1, 0, reg2);
drop
ELSE
OutByte2(0C7H, reg1); (* mov dword[reg1], L *)
Reloc(BIN.RCODE, param2)
END;
drop
|IL.opSAVEIP:
UnOp(reg1);
IF pic THEN
reg2 := GetAnyReg();
Pic(reg2, BIN.PICIMP, param2);
pushm(reg2, 0);
OutByte2(08FH, reg1); (* pop dword[reg1] *)
drop
ELSE
OutByte2(0FFH, 035H); (* push dword[L] *)
Reloc(BIN.RIMP, param2);
OutByte2(08FH, reg1) (* pop dword[reg1] *)
END;
drop
|IL.opPUSHP:
reg1 := GetAnyReg();
IF pic THEN
Pic(reg1, BIN.PICCODE, param2)
ELSE
OutByte(0B8H + reg1); (* mov reg1, L *)
Reloc(BIN.RCODE, param2)
END
|IL.opPUSHIP:
reg1 := GetAnyReg();
IF pic THEN
Pic(reg1, BIN.PICIMP, param2);
movrm(reg1, reg1, 0)
ELSE
OutByte2(08BH, 05H + reg1 * 8); (* mov reg1, dword[L] *)
Reloc(BIN.RIMP, param2)
END
|IL.opNOT:
UnOp(reg1);
test(reg1);
setcc(sete, reg1);
andrc(reg1, 1)
|IL.opORD:
UnOp(reg1);
test(reg1);
setcc(setne, reg1);
andrc(reg1, 1)
|IL.opSBOOL:
BinOp(reg2, reg1);
test(reg2);
OutByte3(0FH, 95H, reg1); (* setne byte[reg1] *)
drop;
drop
|IL.opSBOOLC:
UnOp(reg1);
OutByte3(0C6H, reg1, ORD(param2 # 0)); (* mov byte[reg1], 0/1 *)
drop
|IL.opEQ..IL.opGE,
IL.opEQC..IL.opGEC:
IF (IL.opEQ <= opcode) & (opcode <= IL.opGE) THEN
BinOp(reg1, reg2);
cmprr(reg1, reg2);
drop
ELSE
UnOp(reg1);
cmprc(reg1, param2)
END;
drop;
cc := cond(opcode);
next := cmd.next(COMMAND);
IF next.opcode = IL.opJNZ THEN
jcc(cc, next.param1);
cmd := next
ELSIF next.opcode = IL.opJZ THEN
jcc(inv0(cc), next.param1);
cmd := next
ELSE
reg1 := GetAnyReg();
setcc(cc + 16, reg1);
andrc(reg1, 1)
END
|IL.opEQB, IL.opNEB:
BinOp(reg1, reg2);
drop;
test(reg1);
OutByte2(74H, 5); (* je @f *)
movrc(reg1, 1); (* mov reg1, 1
@@: *)
test(reg2);
OutByte2(74H, 5); (* je @f *)
movrc(reg2, 1); (* mov reg2, 1
@@: *)
cmprr(reg1, reg2);
IF opcode = IL.opEQB THEN
setcc(sete, reg1)
ELSE
setcc(setne, reg1)
END;
andrc(reg1, 1)
|IL.opDROP:
UnOp(reg1);
drop
|IL.opJNZ1:
UnOp(reg1);
test(reg1);
jcc(jne, param1)
|IL.opJG:
UnOp(reg1);
test(reg1);
jcc(jg, param1)
|IL.opJNZ:
UnOp(reg1);
test(reg1);
jcc(jne, param1);
drop
|IL.opJZ:
UnOp(reg1);
test(reg1);
jcc(je, param1);
drop
|IL.opSWITCH:
UnOp(reg1);
IF param2 = 0 THEN
reg2 := eax
ELSE
reg2 := ecx
END;
IF reg1 # reg2 THEN
ASSERT(REG.GetReg(R, reg2));
ASSERT(REG.Exchange(R, reg1, reg2));
drop
END;
drop
|IL.opENDSW:
|IL.opCASEL:
cmprc(eax, param1);
jcc(jl, param2)
|IL.opCASER:
cmprc(eax, param1);
jcc(jg, param2)
|IL.opCASELR:
cmprc(eax, param1);
IF param2 = cmd.param3 THEN
jcc(jne, param2)
ELSE
jcc(jl, param2);
jcc(jg, cmd.param3)
END
|IL.opCODE:
OutByte(param2)
|IL.opGET, IL.opGETC:
IF opcode = IL.opGET THEN
BinOp(reg1, reg2)
ELSIF opcode = IL.opGETC THEN
UnOp(reg2);
reg1 := GetAnyReg();
movrc(reg1, param1)
END;
drop;
drop;
IF param2 # 8 THEN
_movrm(reg1, reg1, 0, param2 * 8, FALSE);
_movrm(reg1, reg2, 0, param2 * 8, TRUE)
ELSE
PushAll(0);
push(reg1);
push(reg2);
pushc(8);
CallRTL(pic, IL._move)
END
|IL.opSAVES:
UnOp(reg2);
REG.PushAll_1(R);
IF pic THEN
reg1 := GetAnyReg();
Pic(reg1, BIN.PICDATA, stroffs + param2);
push(reg1);
drop
ELSE
OutByte(068H); (* push _data + stroffs + param2 *)
Reloc(BIN.RDATA, stroffs + param2);
END;
push(reg2);
drop;
pushc(param1);
CallRTL(pic, IL._move)
|IL.opCHKBYTE:
BinOp(reg1, reg2);
cmprc(reg1, 256);
jcc(jb, param1)
|IL.opCHKIDX:
UnOp(reg1);
cmprc(reg1, param2);
jcc(jb, param1)
|IL.opCHKIDX2:
BinOp(reg1, reg2);
IF param2 # -1 THEN
cmprr(reg2, reg1);
jcc(jb, param1)
END;
INCL(R.regs, reg1);
DEC(R.top);
R.stk[R.top] := reg2
|IL.opLEN:
n := param2;
UnOp(reg1);
drop;
EXCL(R.regs, reg1);
WHILE n > 0 DO
UnOp(reg2);
drop;
DEC(n)
END;
INCL(R.regs, reg1);
ASSERT(REG.GetReg(R, reg1))
|IL.opINCC:
UnOp(reg1);
IF param2 = 1 THEN
OutByte2(0FFH, reg1) (* inc dword[reg1] *)
ELSIF param2 = -1 THEN
OutByte2(0FFH, reg1 + 8) (* dec dword[reg1] *)
ELSE
OutByte2(81H + short(param2), reg1); OutIntByte(param2) (* add dword[reg1], param2 *)
END;
drop
|IL.opINC, IL.opDEC:
BinOp(reg1, reg2);
OutByte2(01H + 28H * ORD(opcode = IL.opDEC), reg1 * 8 + reg2); (* add/sub dword[reg2], reg1 *)
drop;
drop
|IL.opINCCB, IL.opDECCB:
UnOp(reg1);
OutByte3(80H, 28H * ORD(opcode = IL.opDECCB) + reg1, param2 MOD 256); (* add/sub byte[reg1], n *)
drop
|IL.opINCB, IL.opDECB:
BinOp(reg1, reg2);
OutByte2(28H * ORD(opcode = IL.opDECB), reg1 * 8 + reg2); (* add/sub byte[reg2], reg1 *)
drop;
drop
|IL.opMULS:
BinOp(reg1, reg2);
oprr(21H, reg1, reg2); (* and reg1, reg2 *)
drop
|IL.opMULSC:
UnOp(reg1);
andrc(reg1, param2)
|IL.opDIVS:
BinOp(reg1, reg2);
xor(reg1, reg2);
drop
|IL.opDIVSC:
UnOp(reg1);
xorrc(reg1, param2)
|IL.opADDS:
BinOp(reg1, reg2);
oprr(9H, reg1, reg2); (* or reg1, reg2 *)
drop
|IL.opSUBS:
BinOp(reg1, reg2);
not(reg2);
oprr(21H, reg1, reg2); (* and reg1, reg2 *)
drop
|IL.opADDSC:
UnOp(reg1);
orrc(reg1, param2)
|IL.opSUBSL:
UnOp(reg1);
not(reg1);
andrc(reg1, param2)
|IL.opSUBSR:
UnOp(reg1);
andrc(reg1, ORD(-BITS(param2)))
|IL.opUMINS:
UnOp(reg1);
not(reg1)
|IL.opLENGTH:
PushAll(2);
CallRTL(pic, IL._length);
GetRegA
|IL.opLENGTHW:
PushAll(2);
CallRTL(pic, IL._lengthw);
GetRegA
|IL.opCHR:
UnOp(reg1);
andrc(reg1, 255)
|IL.opWCHR:
UnOp(reg1);
andrc(reg1, 65535)
|IL.opASR, IL.opROR, IL.opLSL, IL.opLSR:
UnOp(reg1);
IF reg1 # ecx THEN
ASSERT(REG.GetReg(R, ecx));
ASSERT(REG.Exchange(R, reg1, ecx));
drop
END;
BinOp(reg1, reg2);
ASSERT(reg2 = ecx);
OutByte(0D3H);
shift(opcode, reg1); (* shift reg1, cl *)
drop
|IL.opASR1, IL.opROR1, IL.opLSL1, IL.opLSR1:
UnOp(reg1);
IF reg1 # ecx THEN
ASSERT(REG.GetReg(R, ecx));
ASSERT(REG.Exchange(R, reg1, ecx));
drop
END;
reg1 := GetAnyReg();
movrc(reg1, param2);
BinOp(reg1, reg2);
ASSERT(reg1 = ecx);
OutByte(0D3H);
shift(opcode, reg2); (* shift reg2, cl *)
drop;
drop;
ASSERT(REG.GetReg(R, reg2))
|IL.opASR2, IL.opROR2, IL.opLSL2, IL.opLSR2:
UnOp(reg1);
n := param2 MOD 32;
IF n # 1 THEN
OutByte(0C1H)
ELSE
OutByte(0D1H)
END;
shift(opcode, reg1); (* shift reg1, n *)
IF n # 1 THEN
OutByte(n)
END
|IL.opMAX, IL.opMIN:
BinOp(reg1, reg2);
cmprr(reg1, reg2);
OutByte2(07DH + ORD(opcode = IL.opMIN), 2); (* jge/jle L *)
mov(reg1, reg2);
(* L: *)
drop
|IL.opMAXC, IL.opMINC:
UnOp(reg1);
cmprc(reg1, param2);
label := NewLabel();
IF opcode = IL.opMINC THEN
cc := jle
ELSE
cc := jge
END;
jcc(cc, label);
movrc(reg1, param2);
SetLabel(label)
|IL.opIN, IL.opINR:
IF opcode = IL.opINR THEN
reg2 := GetAnyReg();
movrc(reg2, param2)
END;
label := NewLabel();
BinOp(reg1, reg2);
cmprc(reg1, 32);
OutByte2(72H, 4); (* jb L *)
xor(reg1, reg1);
jmp(label);
(* L: *)
OutByte3(0FH, 0A3H, 0C0H + reg2 + 8 * reg1); (* bt reg2, reg1 *)
setcc(setc, reg1);
andrc(reg1, 1);
SetLabel(label);
drop
|IL.opINL:
UnOp(reg1);
OutByte3(0FH, 0BAH, 0E0H + reg1); OutByte(param2); (* bt reg1, param2 *)
setcc(setc, reg1);
andrc(reg1, 1)
|IL.opRSET:
PushAll(2);
CallRTL(pic, IL._set);
GetRegA
|IL.opRSETR:
PushAll(1);
pushc(param2);
CallRTL(pic, IL._set);
GetRegA
|IL.opRSETL:
UnOp(reg1);
REG.PushAll_1(R);
pushc(param2);
push(reg1);
drop;
CallRTL(pic, IL._set);
GetRegA
|IL.opRSET1:
PushAll(1);
CallRTL(pic, IL._set1);
GetRegA
|IL.opINCL, IL.opEXCL:
BinOp(reg1, reg2);
cmprc(reg1, 32);
OutByte2(73H, 03H); (* jnb L *)
OutByte(0FH);
IF opcode = IL.opINCL THEN
OutByte(0ABH) (* bts dword[reg2], reg1 *)
ELSE
OutByte(0B3H) (* btr dword[reg2], reg1 *)
END;
OutByte(reg2 + 8 * reg1);
(* L: *)
drop;
drop
|IL.opINCLC:
UnOp(reg1);
OutByte3(0FH, 0BAH, 28H + reg1); OutByte(param2); (* bts dword[reg1], param2 *)
drop
|IL.opEXCLC:
UnOp(reg1);
OutByte3(0FH, 0BAH, 30H + reg1); OutByte(param2); (* btr dword[reg1], param2 *)
drop
|IL.opDIV:
PushAll(2);
CallRTL(pic, IL._divmod);
GetRegA
|IL.opDIVR:
n := UTILS.Log2(param2);
IF n > 0 THEN
UnOp(reg1);
IF n # 1 THEN
OutByte3(0C1H, 0F8H + reg1, n) (* sar reg1, n *)
ELSE
OutByte2(0D1H, 0F8H + reg1) (* sar reg1, 1 *)
END
ELSIF n < 0 THEN
PushAll(1);
pushc(param2);
CallRTL(pic, IL._divmod);
GetRegA
END
|IL.opDIVL:
UnOp(reg1);
REG.PushAll_1(R);
pushc(param2);
push(reg1);
drop;
CallRTL(pic, IL._divmod);
GetRegA
|IL.opMOD:
PushAll(2);
CallRTL(pic, IL._divmod);
mov(eax, edx);
GetRegA
|IL.opMODR:
n := UTILS.Log2(param2);
IF n > 0 THEN
UnOp(reg1);
andrc(reg1, param2 - 1);
ELSIF n < 0 THEN
PushAll(1);
pushc(param2);
CallRTL(pic, IL._divmod);
mov(eax, edx);
GetRegA
ELSE
UnOp(reg1);
xor(reg1, reg1)
END
|IL.opMODL:
UnOp(reg1);
REG.PushAll_1(R);
pushc(param2);
push(reg1);
drop;
CallRTL(pic, IL._divmod);
mov(eax, edx);
GetRegA
|IL.opERR:
CallRTL(pic, IL._error)
|IL.opABS:
UnOp(reg1);
test(reg1);
OutByte2(07DH, 002H); (* jge L *)
neg(reg1) (* neg reg1
L: *)
|IL.opCOPY:
IF (0 < param2) & (param2 <= 64) THEN
BinOp(reg1, reg2);
reg3 := GetAnyReg();
FOR n := 0 TO param2 - param2 MOD 4 - 1 BY 4 DO
movrm(reg3, reg1, n);
movmr(reg2, n, reg3)
END;
n := param2 - param2 MOD 4;
IF param2 MOD 4 >= 2 THEN
movrm16(reg3, reg1, n);
movmr16(reg2, n, reg3);
INC(n, 2);
DEC(param2, 2)
END;
IF param2 MOD 4 = 1 THEN
movrm8(reg3, reg1, n);
movmr8(reg2, n, reg3);
END;
drop;
drop;
drop
ELSE
PushAll(2);
pushc(param2);
CallRTL(pic, IL._move)
END
|IL.opMOVE:
PushAll(3);
CallRTL(pic, IL._move)
|IL.opCOPYA:
PushAll(4);
pushc(param2);
CallRTL(pic, IL._arrcpy);
GetRegA
|IL.opCOPYS:
PushAll(4);
pushc(param2);
CallRTL(pic, IL._strcpy)
|IL.opROT:
PushAll(0);
push(esp);
pushc(param2);
CallRTL(pic, IL._rot)
|IL.opNEW:
PushAll(1);
n := param2 + 8;
ASSERT(UTILS.Align(n, 32));
pushc(n);
pushc(param1);
CallRTL(pic, IL._new)
|IL.opDISP:
PushAll(1);
CallRTL(pic, IL._dispose)
|IL.opEQS .. IL.opGES:
PushAll(4);
pushc(opcode - IL.opEQS);
CallRTL(pic, IL._strcmp);
GetRegA
|IL.opEQSW .. IL.opGESW:
PushAll(4);
pushc(opcode - IL.opEQSW);
CallRTL(pic, IL._strcmpw);
GetRegA
|IL.opEQP, IL.opNEP, IL.opEQIP, IL.opNEIP:
UnOp(reg1);
CASE opcode OF
|IL.opEQP, IL.opNEP:
IF pic THEN
reg2 := GetAnyReg();
Pic(reg2, BIN.PICCODE, param1);
cmprr(reg1, reg2);
drop
ELSE
OutByte2(081H, 0F8H + reg1); (* cmp reg1, L *)
Reloc(BIN.RCODE, param1)
END
|IL.opEQIP, IL.opNEIP:
IF pic THEN
reg2 := GetAnyReg();
Pic(reg2, BIN.PICIMP, param1);
OutByte2(03BH, reg1 * 8 + reg2); (* cmp reg1, dword [reg2] *)
drop
ELSE
OutByte2(3BH, 05H + reg1 * 8); (* cmp reg1, dword[L] *)
Reloc(BIN.RIMP, param1)
END
END;
drop;
reg1 := GetAnyReg();
CASE opcode OF
|IL.opEQP, IL.opEQIP: setcc(sete, reg1)
|IL.opNEP, IL.opNEIP: setcc(setne, reg1)
END;
andrc(reg1, 1)
|IL.opPUSHT:
UnOp(reg1);
movrm(GetAnyReg(), reg1, -4)
|IL.opISREC:
PushAll(2);
pushc(param2 * tcount);
CallRTL(pic, IL._isrec);
GetRegA
|IL.opIS:
PushAll(1);
pushc(param2 * tcount);
CallRTL(pic, IL._is);
GetRegA
|IL.opTYPEGR:
PushAll(1);
pushc(param2 * tcount);
CallRTL(pic, IL._guardrec);
GetRegA
|IL.opTYPEGP:
UnOp(reg1);
PushAll(0);
push(reg1);
pushc(param2 * tcount);
CallRTL(pic, IL._guard);
GetRegA
|IL.opTYPEGD:
UnOp(reg1);
PushAll(0);
pushm(reg1, -4);
pushc(param2 * tcount);
CallRTL(pic, IL._guardrec);
GetRegA
|IL.opCASET:
push(ecx);
push(ecx);
pushc(param2 * tcount);
CallRTL(pic, IL._guardrec);
pop(ecx);
test(eax);
jcc(jne, param1)
|IL.opPACK:
BinOp(reg1, reg2);
push(reg2);
OutByte3(0DBH, 004H, 024H); (* fild dword[esp] *)
OutByte2(0DDH, reg1); (* fld qword[reg1] *)
OutByte2(0D9H, 0FDH); (* fscale *)
OutByte2(0DDH, 018H + reg1); (* fstp qword[reg1] *)
OutByte3(0DBH, 01CH, 024H); (* fistp dword[esp] *)
pop(reg2);
drop;
drop
|IL.opPACKC:
UnOp(reg1);
pushc(param2);
OutByte3(0DBH, 004H, 024H); (* fild dword[esp] *)
OutByte2(0DDH, reg1); (* fld qword[reg1] *)
OutByte2(0D9H, 0FDH); (* fscale *)
OutByte2(0DDH, 018H + reg1); (* fstp qword[reg1] *)
OutByte3(0DBH, 01CH, 024H); (* fistp dword[esp] *)
pop(reg1);
drop
|IL.opUNPK:
BinOp(reg1, reg2);
OutByte2(0DDH, reg1); (* fld qword[reg1] *)
OutByte2(0D9H, 0F4H); (* fxtract *)
OutByte2(0DDH, 018H + reg1); (* fstp qword[reg1] *)
OutByte2(0DBH, 018H + reg2); (* fistp dword[reg2] *)
drop;
drop
|IL.opPUSHF:
ASSERT(fr >= 0);
DEC(fr);
subrc(esp, 8);
OutByte3(0DDH, 01CH, 024H) (* fstp qword[esp] *)
|IL.opLOADF:
INC(fr);
IF fr > MAX_FR THEN
ERRORS.ErrorMsg(fname, param1, param2, FPR_ERR)
END;
UnOp(reg1);
OutByte2(0DDH, reg1); (* fld qword[reg1] *)
drop
|IL.opCONSTF:
INC(fr);
IF fr > MAX_FR THEN
ERRORS.ErrorMsg(fname, param1, param2, FPR_ERR)
END;
float := cmd.float;
IF float = 0.0 THEN
OutByte2(0D9H, 0EEH) (* fldz *)
ELSIF float = 1.0 THEN
OutByte2(0D9H, 0E8H) (* fld1 *)
ELSIF float = -1.0 THEN
OutByte2(0D9H, 0E8H); (* fld1 *)
OutByte2(0D9H, 0E0H) (* fchs *)
ELSE
LoadFltConst(float)
END
|IL.opSAVEF, IL.opSAVEFI:
ASSERT(fr >= 0);
DEC(fr);
UnOp(reg1);
OutByte2(0DDH, 018H + reg1); (* fstp qword[reg1] *)
drop
|IL.opADDF:
ASSERT(fr >= 1);
DEC(fr);
OutByte2(0DEH, 0C1H) (* faddp st1, st *)
|IL.opSUBF:
ASSERT(fr >= 1);
DEC(fr);
OutByte2(0DEH, 0E9H) (* fsubp st1, st *)
|IL.opSUBFI:
ASSERT(fr >= 1);
DEC(fr);
OutByte2(0DEH, 0E1H) (* fsubrp st1, st *)
|IL.opMULF:
ASSERT(fr >= 1);
DEC(fr);
OutByte2(0DEH, 0C9H) (* fmulp st1, st *)
|IL.opDIVF:
ASSERT(fr >= 1);
DEC(fr);
OutByte2(0DEH, 0F9H) (* fdivp st1, st *)
|IL.opDIVFI:
ASSERT(fr >= 1);
DEC(fr);
OutByte2(0DEH, 0F1H) (* fdivrp st1, st *)
|IL.opUMINF:
ASSERT(fr >= 0);
OutByte2(0D9H, 0E0H) (* fchs *)
|IL.opFABS:
ASSERT(fr >= 0);
OutByte2(0D9H, 0E1H) (* fabs *)
|IL.opFLT:
INC(fr);
IF fr > MAX_FR THEN
ERRORS.ErrorMsg(fname, param1, param2, FPR_ERR)
END;
UnOp(reg1);
push(reg1);
OutByte3(0DBH, 004H, 024H); (* fild dword[esp] *)
pop(reg1);
drop
|IL.opFLOOR:
ASSERT(fr >= 0);
DEC(fr);
subrc(esp, 8);
OutByte2(09BH, 0D9H); OutByte3(07CH, 024H, 004H); (* fstcw word[esp+4] *)
OutByte2(09BH, 0D9H); OutByte3(07CH, 024H, 006H); (* fstcw word[esp+6] *)
OutByte2(066H, 081H); OutByte3(064H, 024H, 004H); OutWord(0F3FFH); (* and word[esp+4], 1111001111111111b *)
OutByte2(066H, 081H); OutByte3(04CH, 024H, 004H); OutWord(00400H); (* or word[esp+4], 0000010000000000b *)
OutByte2(0D9H, 06CH); OutByte2(024H, 004H); (* fldcw word[esp+4] *)
OutByte2(0D9H, 0FCH); (* frndint *)
OutByte3(0DBH, 01CH, 024H); (* fistp dword[esp] *)
pop(GetAnyReg());
OutByte2(0D9H, 06CH); OutByte2(024H, 002H); (* fldcw word[esp+2] *)
addrc(esp, 4)
|IL.opEQF:
ASSERT(fr >= 1);
DEC(fr, 2);
fcmp;
OutByte2(07AH, 003H); (* jp L *)
setcc(sete, al)
(* L: *)
|IL.opNEF:
ASSERT(fr >= 1);
DEC(fr, 2);
fcmp;
OutByte2(07AH, 003H); (* jp L *)
setcc(setne, al)
(* L: *)
|IL.opLTF:
ASSERT(fr >= 1);
DEC(fr, 2);
fcmp;
OutByte2(07AH, 00EH); (* jp L *)
setcc(setc, al);
setcc(sete, ah);
test(eax);
setcc(sete, al);
andrc(eax, 1)
(* L: *)
|IL.opGTF:
ASSERT(fr >= 1);
DEC(fr, 2);
fcmp;
OutByte2(07AH, 00FH); (* jp L *)
setcc(setc, al);
setcc(sete, ah);
cmprc(eax, 1);
setcc(sete, al);
andrc(eax, 1)
(* L: *)
|IL.opLEF:
ASSERT(fr >= 1);
DEC(fr, 2);
fcmp;
OutByte2(07AH, 003H); (* jp L *)
setcc(setnc, al)
(* L: *)
|IL.opGEF:
ASSERT(fr >= 1);
DEC(fr, 2);
fcmp;
OutByte2(07AH, 010H); (* jp L *)
setcc(setc, al);
setcc(sete, ah);
OutByte2(000H, 0E0H); (* add al, ah *)
OutByte2(03CH, 001H); (* cmp al, 1 *)
setcc(sete, al);
andrc(eax, 1)
(* L: *)
|IL.opINF:
INC(fr);
IF fr > MAX_FR THEN
ERRORS.ErrorMsg(fname, param1, param2, FPR_ERR)
END;
LoadFltConst(UTILS.inf)
|IL.opLADR_UNPK:
n := param2 * 4;
reg1 := GetAnyReg();
OutByte2(8DH, 45H + reg1 * 8 + long(n)); (* lea reg1, dword[ebp + n] *)
OutIntByte(n);
BinOp(reg1, reg2);
OutByte2(0DDH, reg1); (* fld qword[reg1] *)
OutByte2(0D9H, 0F4H); (* fxtract *)
OutByte2(0DDH, 018H + reg1); (* fstp qword[reg1] *)
OutByte2(0DBH, 018H + reg2); (* fistp dword[reg2] *)
drop;
drop
|IL.opSADR_PARAM:
IF pic THEN
reg1 := GetAnyReg();
Pic(reg1, BIN.PICDATA, stroffs + param2);
push(reg1);
drop
ELSE
OutByte(068H); (* push _data + stroffs + param2 *)
Reloc(BIN.RDATA, stroffs + param2)
END
|IL.opVADR_PARAM, IL.opLLOAD32_PARAM:
pushm(ebp, param2 * 4)
|IL.opCONST_PARAM:
pushc(param2)
|IL.opGLOAD32_PARAM:
IF pic THEN
reg1 := GetAnyReg();
Pic(reg1, BIN.PICBSS, param2);
pushm(reg1, 0);
drop
ELSE
OutByte2(0FFH, 035H); (* push dword[_bss + param2] *)
Reloc(BIN.RBSS, param2)
END
|IL.opLOAD32_PARAM:
UnOp(reg1);
pushm(reg1, 0);
drop
|IL.opGADR_SAVEC:
IF pic THEN
reg1 := GetAnyReg();
Pic(reg1, BIN.PICBSS, param1);
OutByte2(0C7H, reg1); (* mov dword[reg1], param2 *)
OutInt(param2);
drop
ELSE
OutByte2(0C7H, 05H); (* mov dword[_bss + param1], param2 *)
Reloc(BIN.RBSS, param1);
OutInt(param2)
END
|IL.opLADR_SAVEC:
n := param1 * 4;
OutByte2(0C7H, 45H + long(n)); (* mov dword[ebp + n], param2 *)
OutIntByte(n);
OutInt(param2)
|IL.opLADR_SAVE:
UnOp(reg1);
movmr(ebp, param2 * 4, reg1);
drop
|IL.opLADR_INCC:
n := param1 * 4;
IF ABS(param2) = 1 THEN
OutByte2(0FFH, 45H + 8 * ORD(param2 = -1) + long(n)); (* inc/dec dword[ebp + n] *)
OutIntByte(n)
ELSE
OutByte2(81H + short(param2), 45H + long(n)); (* add dword[ebp + n], param2 *)
OutIntByte(n);
OutIntByte(param2)
END
|IL.opLADR_INCCB, IL.opLADR_DECCB:
n := param1 * 4;
IF param2 = 1 THEN
OutByte2(0FEH, 45H + 8 * ORD(opcode = IL.opLADR_DECCB) + long(n)); (* inc/dec byte[ebp + n] *)
OutIntByte(n)
ELSE
OutByte2(80H, 45H + 28H * ORD(opcode = IL.opLADR_DECCB) + long(n)); (* add/sub byte[ebp + n], param2 *)
OutIntByte(n);
OutByte(param2 MOD 256)
END
|IL.opLADR_INC, IL.opLADR_DEC:
n := param2 * 4;
UnOp(reg1);
OutByte2(01H + 28H * ORD(opcode = IL.opLADR_DEC), 45H + long(n) + reg1 * 8); (* add/sub dword[ebp + n], reg1 *)
OutIntByte(n);
drop
|IL.opLADR_INCB, IL.opLADR_DECB:
n := param2 * 4;
UnOp(reg1);
OutByte2(28H * ORD(opcode = IL.opLADR_DECB), 45H + long(n) + reg1 * 8); (* add/sub byte[ebp + n], reg1 *)
OutIntByte(n);
drop
|IL.opLADR_INCL, IL.opLADR_EXCL:
n := param2 * 4;
UnOp(reg1);
cmprc(reg1, 32);
label := NewLabel();
jcc(jnb, label);
OutByte3(0FH, 0ABH + 8 * ORD(opcode = IL.opLADR_EXCL), 45H + long(n) + reg1 * 8); (* bts(r) dword[ebp + n], reg1 *)
OutIntByte(n);
SetLabel(label);
drop
|IL.opLADR_INCLC, IL.opLADR_EXCLC:
n := param1 * 4;
OutByte3(0FH, 0BAH, 6DH + long(n) + 8 * ORD(opcode = IL.opLADR_EXCLC)); (* bts(r) dword[ebp + n], param2 *)
OutIntByte(n);
OutByte(param2)
|IL.opFNAME:
fname := cmd(IL.FNAMECMD).fname
END;
cmd := cmd.next(COMMAND)
END;
ASSERT(R.pushed = 0);
ASSERT(R.top = -1);
ASSERT(fr = -1)
END translate;
PROCEDURE prolog (pic: BOOLEAN; target, stack, dllret: INTEGER): INTEGER;
VAR
reg1, entry, L, dcount: INTEGER;
BEGIN
entry := NewLabel();
SetLabel(entry);
dcount := CHL.Length(IL.codes.data);
push(ebp);
mov(ebp, esp);
SetLabel(NewLabel());
mainFltConstLabel := CodeList.last(LABEL);
FltConstLabel := mainFltConstLabel;
mainLocVarSize := 0;
LocVarSize := 0;
IF target = TARGETS.Win32DLL THEN
pushm(ebp, 16);
pushm(ebp, 12);
pushm(ebp, 8);
CallRTL(pic, IL._dllentry);
test(eax);
jcc(je, dllret);
pushc(0)
ELSIF target = TARGETS.KolibriOSDLL THEN
OutByte(68H); (* push IMPORT *)
Reloc(BIN.IMPTAB, 0)
ELSIF target = TARGETS.KolibriOS THEN
reg1 := GetAnyReg();
Pic(reg1, BIN.IMPTAB, 0);
push(reg1); (* push IMPORT *)
drop
ELSIF target = TARGETS.Linux32 THEN
mov(eax, ebp);
addrc(eax, 4);
push(eax)
ELSE
pushc(0)
END;
IF pic THEN
reg1 := GetAnyReg();
Pic(reg1, BIN.PICCODE, entry);
push(reg1); (* push CODE *)
Pic(reg1, BIN.PICDATA, 0);
push(reg1); (* push _data *)
pushc(tcount);
Pic(reg1, BIN.PICDATA, tcount * 4 + dcount);
push(reg1); (* push _data + tcount * 4 + dcount *)
drop
ELSE
OutByte(68H); (* push CODE *)
Reloc(BIN.RCODE, entry);
OutByte(68H); (* push _data *)
Reloc(BIN.RDATA, 0);
pushc(tcount);
OutByte(68H); (* push _data + tcount * 4 + dcount *)
Reloc(BIN.RDATA, tcount * 4 + dcount)
END;
CallRTL(pic, IL._init);
IF target IN {TARGETS.Win32C, TARGETS.Win32GUI, TARGETS.Linux32} THEN
L := NewLabel();
pushc(0);
push(esp);
pushc(1024 * 1024 * stack);
pushc(0);
CallRTL(pic, IL._new);
pop(eax);
test(eax);
jcc(je, L);
addrc(eax, 1024 * 1024 * stack - 4);
mov(esp, eax);
SetLabel(L)
END
RETURN entry
END prolog;
PROCEDURE epilog (pic: BOOLEAN; modname: ARRAY OF CHAR; target, stack, ver, dllinit, dllret, sofinit: INTEGER);
VAR
exp: IL.EXPORT_PROC;
path, name, ext: PATHS.PATH;
dcount, i: INTEGER;
PROCEDURE _import (imp: LISTS.LIST);
VAR
lib: IL.IMPORT_LIB;
proc: IL.IMPORT_PROC;
BEGIN
lib := imp.first(IL.IMPORT_LIB);
WHILE lib # NIL DO
BIN.Import(program, lib.name, 0);
proc := lib.procs.first(IL.IMPORT_PROC);
WHILE proc # NIL DO
BIN.Import(program, proc.name, proc.label);
proc := proc.next(IL.IMPORT_PROC)
END;
lib := lib.next(IL.IMPORT_LIB)
END
END _import;
BEGIN
IF target IN {TARGETS.Win32C, TARGETS.Win32GUI, TARGETS.KolibriOS, TARGETS.Linux32} THEN
pushc(0);
CallRTL(pic, IL._exit);
ELSIF target = TARGETS.Win32DLL THEN
SetLabel(dllret);
movrc(eax, 1);
OutByte(0C9H); (* leave *)
OutByte3(0C2H, 0CH, 0) (* ret 12 *)
ELSIF target = TARGETS.KolibriOSDLL THEN
movrc(eax, 1);
OutByte(0C9H); (* leave *)
ret
ELSIF target = TARGETS.Linux32SO THEN
OutByte(0C9H); (* leave *)
ret;
SetLabel(sofinit);
CallRTL(pic, IL._sofinit);
ret
END;
fixup;
dcount := CHL.Length(IL.codes.data);
FOR i := 0 TO tcount - 1 DO
BIN.PutData32LE(program, CHL.GetInt(IL.codes.types, i))
END;
FOR i := 0 TO dcount - 1 DO
BIN.PutData(program, CHL.GetByte(IL.codes.data, i))
END;
program.modname := CHL.Length(program.data);
PATHS.split(modname, path, name, ext);
BIN.PutDataStr(program, name);
BIN.PutDataStr(program, ext);
BIN.PutData(program, 0);
IF target = TARGETS.KolibriOSDLL THEN
BIN.Export(program, "lib_init", dllinit);
END;
exp := IL.codes.export.first(IL.EXPORT_PROC);
WHILE exp # NIL DO
BIN.Export(program, exp.name, exp.label);
exp := exp.next(IL.EXPORT_PROC)
END;
_import(IL.codes._import);
IL.set_bss(MAX(IL.codes.bss, MAX(IL.codes.dmin - CHL.Length(IL.codes.data), 4)));
BIN.SetParams(program, IL.codes.bss, stack * (1024 * 1024), WCHR(ver DIV 65536), WCHR(ver MOD 65536))
END epilog;
PROCEDURE CodeGen* (outname: ARRAY OF CHAR; target: INTEGER; options: PROG.OPTIONS);
VAR
dllret, dllinit, sofinit: INTEGER;
opt: PROG.OPTIONS;
BEGIN
FR[0] := 0;
tcount := CHL.Length(IL.codes.types);
opt := options;
CodeList := LISTS.create(NIL);
program := BIN.create(IL.codes.lcount);
dllret := NewLabel();
sofinit := NewLabel();
IF target = TARGETS.KolibriOSDLL THEN
opt.pic := FALSE
END;
IF TARGETS.OS IN {TARGETS.osWIN32, TARGETS.osLINUX32} THEN
opt.pic := TRUE
END;
REG.Init(R, push, pop, mov, xchg, {eax, ecx, edx});
dllinit := prolog(opt.pic, target, opt.stack, dllret);
translate(opt.pic, tcount * 4);
epilog(opt.pic, outname, target, opt.stack, opt.version, dllinit, dllret, sofinit);
BIN.fixup(program);
IF TARGETS.OS = TARGETS.osWIN32 THEN
PE32.write(program, outname, target = TARGETS.Win32C, target = TARGETS.Win32DLL, FALSE)
ELSIF target = TARGETS.KolibriOS THEN
KOS.write(program, outname)
ELSIF target = TARGETS.KolibriOSDLL THEN
MSCOFF.write(program, outname, opt.version)
ELSIF TARGETS.OS = TARGETS.osLINUX32 THEN
ELF.write(program, outname, sofinit, target = TARGETS.Linux32SO, FALSE)
END
END CodeGen;
PROCEDURE SetProgram* (prog: BIN.PROGRAM);
BEGIN
program := prog;
CodeList := LISTS.create(NIL)
END SetProgram;
END X86.