opensources
/
lua
mirror of https://github.com/lua/lua.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

better information about instruction behavior (use of arguments)

v5-2
Roberto Ierusalimschy 22 years ago
parent
6d268b0b00
commit
c116dcb92b
5 changed files with 100 additions and 86 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 10
      lcode.c
  2. 47
      ldebug.c
  3. 85
      lopcodes.c
  4. 28
      lopcodes.h
  5. 14
      lvm.c

10
lcode.c
View File

@ -1,5 +1,5 @@
/*
** $Id: lcode.c,v 1.116 2003/02/27 12:33:07 roberto Exp roberto $
** $Id: lcode.c,v 1.117 2003/04/03 13:35:34 roberto Exp roberto $
** Code generator for Lua
** See Copyright Notice in lua.h
*/
@ -88,7 +88,7 @@ static int luaK_getjump (FuncState *fs, int pc) {
static Instruction *getjumpcontrol (FuncState *fs, int pc) {
Instruction *pi = &fs->f->code[pc];
if (pc >= 1 && testOpMode(GET_OPCODE(*(pi-1)), OpModeT))
if (pc >= 1 && testTMode(GET_OPCODE(*(pi-1))))
return pi-1;
else
return pi;
@ -462,8 +462,7 @@ void luaK_self (FuncState *fs, expdesc *e, expdesc *key) {
static void invertjump (FuncState *fs, expdesc *e) {
Instruction *pc = getjumpcontrol(fs, e->info);
lua_assert(testOpMode(GET_OPCODE(*pc), OpModeT) &&
GET_OPCODE(*pc) != OP_TEST);
lua_assert(testTMode(GET_OPCODE(*pc)) && GET_OPCODE(*pc) != OP_TEST);
SETARG_A(*pc, !(GETARG_A(*pc)));
}
@ -703,12 +702,15 @@ int luaK_code (FuncState *fs, Instruction i, int line) {
int luaK_codeABC (FuncState *fs, OpCode o, int a, int b, int c) {
lua_assert(getOpMode(o) == iABC);
lua_assert(getBMode(o) != OpArgN || b == 0);
lua_assert(getCMode(o) != OpArgN || c == 0);
return luaK_code(fs, CREATE_ABC(o, a, b, c), fs->ls->lastline);
}
int luaK_codeABx (FuncState *fs, OpCode o, int a, unsigned int bc) {
lua_assert(getOpMode(o) == iABx || getOpMode(o) == iAsBx);
lua_assert(getCMode(o) == OpArgN);
return luaK_code(fs, CREATE_ABx(o, a, bc), fs->ls->lastline);
}

47
ldebug.c
View File

@ -1,5 +1,5 @@
/*
** $Id: ldebug.c,v 1.151 2003/04/28 13:31:06 roberto Exp roberto $
** $Id: ldebug.c,v 1.152 2003/05/13 20:15:59 roberto Exp roberto $
** Debug Interface
** See Copyright Notice in lua.h
*/
@ -296,8 +296,16 @@ static int checkopenop (const Proto *pt, int pc) {
}
static int checkRK (const Proto *pt, int r) {
return (r < pt->maxstacksize || (r >= MAXSTACK && r-MAXSTACK < pt->sizek));
static int checkArgMode (const Proto *pt, int r, enum OpArgMask mode) {
switch (mode) {
case OpArgN: check(r == 0); break;
case OpArgU: break;
case OpArgR: checkreg(pt, r); break;
case OpArgK:
check(r < pt->maxstacksize || (r >= MAXSTACK && r-MAXSTACK < pt->sizek));
break;
}
return 1;
}
@ -317,29 +325,28 @@ static Instruction luaG_symbexec (const Proto *pt, int lastpc, int reg) {
case iABC: {
b = GETARG_B(i);
c = GETARG_C(i);
if (testOpMode(op, OpModeBreg)) {
checkreg(pt, b);
}
else if (testOpMode(op, OpModeBrk))
check(checkRK(pt, b));
if (testOpMode(op, OpModeCrk))
check(checkRK(pt, c));
check(checkArgMode(pt, b, getBMode(op)));
check(checkArgMode(pt, c, getCMode(op)));
break;
}
case iABx: {
b = GETARG_Bx(i);
if (testOpMode(op, OpModeK)) check(b < pt->sizek);
if (getBMode(op) == OpArgK) check(b < pt->sizek);
break;
}
case iAsBx: {
b = GETARG_sBx(i);
if (getBMode(op) == OpArgR) {
int dest = pc+1+b;
check(0 <= dest && dest < pt->sizecode);
}
break;
}
}
if (testOpMode(op, OpModesetA)) {
if (testAMode(op)) {
if (a == reg) last = pc; /* change register `a' */
}
if (testOpMode(op, OpModeT)) {
if (testTMode(op)) {
check(pc+2 < pt->sizecode); /* check skip */
check(GET_OPCODE(pt->code[pc+1]) == OP_JMP);
}
@ -369,21 +376,21 @@ static Instruction luaG_symbexec (const Proto *pt, int lastpc, int reg) {
break;
}
case OP_CONCAT: {
/* `c' is a register, and at least two operands */
check(c < MAXSTACK && b < c);
check(b < c); /* at least two operands */
break;
}
case OP_TFORLOOP:
checkreg(pt, a+5);
case OP_TFORLOOP: {
checkreg(pt, a+5); /* space for control variables */
if (reg >= a) last = pc; /* affect all registers above base */
/* go through */
break;
}
case OP_TFORPREP:
case OP_FORLOOP:
case OP_FORPREP:
checkreg(pt, a+2);
checkreg(pt, a+3);
/* go through */
case OP_JMP: {
int dest = pc+1+b;
check(0 <= dest && dest < pt->sizecode);
/* not full check and jump is forward and do not skip `lastpc'? */
if (reg != NO_REG && pc < dest && dest <= lastpc)
pc += b; /* do the jump */

85
lopcodes.c
View File

@ -1,7 +1,5 @@
/*
** $Id: lopcodes.c,v 1.22 2002/12/04 17:38:31 roberto Exp roberto $
** extracted automatically from lopcodes.h by mkprint.lua
** DO NOT EDIT
** $Id: lopcodes.c,v 1.23 2003/05/13 20:15:59 roberto Exp roberto $
** See Copyright Notice in lua.h
*/
@ -14,6 +12,8 @@
#include "lopcodes.h"
/* ORDER OP */
#ifdef LUA_OPNAMES
const char *const luaP_opnames[] = {
@ -57,48 +57,45 @@ const char *const luaP_opnames[] = {
#endif
#define opmode(t,b,bk,ck,sa,k,m) (((t)<<OpModeT) | \
((b)<<OpModeBreg) | ((bk)<<OpModeBrk) | ((ck)<<OpModeCrk) | \
((sa)<<OpModesetA) | ((k)<<OpModeK) | (m))
#define opmode(t,a,b,c,m) (((t)<<7) | ((a)<<6) | ((b)<<4) | ((c)<<2) | (m))
const lu_byte luaP_opmodes[NUM_OPCODES] = {
/* T B Bk Ck sA K mode opcode */
opmode(0, 1, 0, 0, 1, 0, iABC) /* OP_MOVE */
,opmode(0, 0, 0, 0, 1, 1, iABx) /* OP_LOADK */
,opmode(0, 0, 0, 0, 1, 0, iABC) /* OP_LOADBOOL */
,opmode(0, 1, 0, 0, 1, 0, iABC) /* OP_LOADNIL */
,opmode(0, 0, 0, 0, 1, 0, iABC) /* OP_GETUPVAL */
,opmode(0, 0, 0, 0, 1, 1, iABx) /* OP_GETGLOBAL */
,opmode(0, 1, 0, 1, 1, 0, iABC) /* OP_GETTABLE */
,opmode(0, 0, 0, 0, 0, 1, iABx) /* OP_SETGLOBAL */
,opmode(0, 0, 0, 0, 0, 0, iABC) /* OP_SETUPVAL */
,opmode(0, 0, 1, 1, 0, 0, iABC) /* OP_SETTABLE */
,opmode(0, 0, 0, 0, 1, 0, iABC) /* OP_NEWTABLE */
,opmode(0, 1, 0, 1, 1, 0, iABC) /* OP_SELF */
,opmode(0, 0, 1, 1, 1, 0, iABC) /* OP_ADD */
,opmode(0, 0, 1, 1, 1, 0, iABC) /* OP_SUB */
,opmode(0, 0, 1, 1, 1, 0, iABC) /* OP_MUL */
,opmode(0, 0, 1, 1, 1, 0, iABC) /* OP_DIV */
,opmode(0, 0, 1, 1, 1, 0, iABC) /* OP_POW */
,opmode(0, 1, 0, 0, 1, 0, iABC) /* OP_UNM */
,opmode(0, 1, 0, 0, 1, 0, iABC) /* OP_NOT */
,opmode(0, 1, 0, 1, 1, 0, iABC) /* OP_CONCAT */
,opmode(0, 0, 0, 0, 0, 0, iAsBx) /* OP_JMP */
,opmode(1, 0, 1, 1, 0, 0, iABC) /* OP_EQ */
,opmode(1, 0, 1, 1, 0, 0, iABC) /* OP_LT */
,opmode(1, 0, 1, 1, 0, 0, iABC) /* OP_LE */
,opmode(1, 1, 0, 0, 1, 0, iABC) /* OP_TEST */
,opmode(0, 0, 0, 0, 0, 0, iABC) /* OP_CALL */
,opmode(0, 0, 0, 0, 0, 0, iABC) /* OP_TAILCALL */
,opmode(0, 0, 0, 0, 0, 0, iABC) /* OP_RETURN */
,opmode(0, 0, 0, 0, 0, 0, iAsBx) /* OP_FORLOOP */
,opmode(0, 0, 0, 0, 0, 0, iAsBx) /* OP_FORPREP */
,opmode(1, 0, 0, 0, 0, 0, iABC) /* OP_TFORLOOP */
,opmode(0, 0, 0, 0, 0, 0, iAsBx) /* OP_TFORPREP */
,opmode(0, 0, 0, 0, 0, 0, iABx) /* OP_SETLIST */
,opmode(0, 0, 0, 0, 0, 0, iABx) /* OP_SETLISTO */
,opmode(0, 0, 0, 0, 0, 0, iABC) /* OP_CLOSE */
,opmode(0, 0, 0, 0, 1, 0, iABx) /* OP_CLOSURE */
/* T A B C mode opcode */
opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_MOVE */
,opmode(0, 1, OpArgK, OpArgN, iABx) /* OP_LOADK */
,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_LOADBOOL */
,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_LOADNIL */
,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_GETUPVAL */
,opmode(0, 1, OpArgK, OpArgN, iABx) /* OP_GETGLOBAL */
,opmode(0, 1, OpArgR, OpArgK, iABC) /* OP_GETTABLE */
,opmode(0, 0, OpArgK, OpArgN, iABx) /* OP_SETGLOBAL */
,opmode(0, 0, OpArgU, OpArgN, iABC) /* OP_SETUPVAL */
,opmode(0, 0, OpArgK, OpArgK, iABC) /* OP_SETTABLE */
,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_NEWTABLE */
,opmode(0, 1, OpArgR, OpArgK, iABC) /* OP_SELF */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_ADD */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_SUB */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_MUL */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_DIV */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_POW */
,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_UNM */
,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_NOT */
,opmode(0, 1, OpArgR, OpArgR, iABC) /* OP_CONCAT */
,opmode(0, 0, OpArgR, OpArgN, iAsBx) /* OP_JMP */
,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_EQ */
,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_LT */
,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_LE */
,opmode(1, 1, OpArgR, OpArgU, iABC) /* OP_TEST */
,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_CALL */
,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_TAILCALL */
,opmode(0, 0, OpArgU, OpArgN, iABC) /* OP_RETURN */
,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_FORLOOP */
,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_FORPREP */
,opmode(1, 0, OpArgN, OpArgU, iABC) /* OP_TFORLOOP */
,opmode(0, 0, OpArgR, OpArgN, iAsBx) /* OP_TFORPREP */
,opmode(0, 0, OpArgU, OpArgN, iABx) /* OP_SETLIST */
,opmode(0, 0, OpArgU, OpArgN, iABx) /* OP_SETLISTO */
,opmode(0, 0, OpArgN, OpArgN, iABC) /* OP_CLOSE */
,opmode(0, 1, OpArgU, OpArgN, iABx) /* OP_CLOSURE */
};

28
lopcodes.h
View File

@ -1,5 +1,5 @@
/*
** $Id: lopcodes.h,v 1.102 2002/08/21 18:56:09 roberto Exp roberto $
** $Id: lopcodes.h,v 1.103 2003/05/13 20:15:59 roberto Exp roberto $
** Opcodes for Lua virtual machine
** See Copyright Notice in lua.h
*/
@ -206,22 +206,28 @@ OP_CLOSURE/* A Bx R(A) := closure(KPROTO[Bx], R(A), ... ,R(A+n)) */
/*
** masks for instruction properties
** masks for instruction properties. The format is:
** bits 0-1: op mode
** bits 2-3: C arg mode
** bits 4-5: B arg mode
** bit 6: instruction set register A
** bit 7: operator is a test
*/
enum OpModeMask {
OpModeBreg = 2, /* B is a register */
OpModeBrk, /* B is a register/constant */
OpModeCrk, /* C is a register/constant */
OpModesetA, /* instruction set register A */
OpModeK, /* Bx is a constant */
OpModeT /* operator is a test */
};
enum OpArgMask {
OpArgN, /* argument is not used */
OpArgU, /* argument is used */
OpArgR, /* argument is a register or a jump offset */
OpArgK /* argument is a constant or register/constant */
};
extern const lu_byte luaP_opmodes[NUM_OPCODES];
#define getOpMode(m) (cast(enum OpMode, luaP_opmodes[m] & 3))
#define testOpMode(m, b) (luaP_opmodes[m] & (1 << (b)))
#define getBMode(m) (cast(enum OpArgMask, (luaP_opmodes[m] >> 4) & 3))
#define getCMode(m) (cast(enum OpArgMask, (luaP_opmodes[m] >> 2) & 3))
#define testAMode(m) (luaP_opmodes[m] & (1 << 6))
#define testTMode(m) (luaP_opmodes[m] & (1 << 7))
#ifdef LUA_OPNAMES

14
lvm.c
View File

@ -1,5 +1,5 @@
/*
** $Id: lvm.c,v 1.285 2003/05/05 18:39:57 roberto Exp roberto $
** $Id: lvm.c,v 1.286 2003/05/13 20:15:59 roberto Exp roberto $
** Lua virtual machine
** See Copyright Notice in lua.h
*/
@ -361,11 +361,13 @@ static void Arith (lua_State *L, StkId ra,
#define RA(i) (base+GETARG_A(i))
/* to be used after possible stack reallocation */
#define XRA(i) (L->base+GETARG_A(i))
#define RB(i) (base+GETARG_B(i))
#define RKB(i) ((GETARG_B(i) < MAXSTACK) ? RB(i) : k+GETARG_B(i)-MAXSTACK)
#define RC(i) (base+GETARG_C(i))
#define RKC(i) ((GETARG_C(i) < MAXSTACK) ? RC(i) : k+GETARG_C(i)-MAXSTACK)
#define KBx(i) (k+GETARG_Bx(i))
#define RB(i) check_exp(getBMode(GET_OPCODE(i)) == OpArgR, base+GETARG_B(i))
#define RC(i) check_exp(getCMode(GET_OPCODE(i)) == OpArgR, base+GETARG_C(i))
#define RKB(i) check_exp(getBMode(GET_OPCODE(i)) == OpArgK, \
(GETARG_B(i) < MAXSTACK) ? base+GETARG_B(i) : k+GETARG_B(i)-MAXSTACK)
#define RKC(i) check_exp(getCMode(GET_OPCODE(i)) == OpArgK, \
(GETARG_C(i) < MAXSTACK) ? base+GETARG_C(i) : k+GETARG_C(i)-MAXSTACK)
#define KBx(i) check_exp(getBMode(GET_OPCODE(i)) == OpArgK, k+GETARG_Bx(i))
#define dojump(pc, i) ((pc) += (i))

Write Preview
Loading…
Cancel
Save