ref: a4d34b295bef512c4d523d0e30cb9fe30d040299
dir: /luac.c/
/*
** $Id: luac.c $
** Lua compiler (saves bytecodes to files; also lists bytecodes)
** See Copyright Notice in lua.h
*/
#define luac_c
#define LUA_CORE
#include "lprefix.h"
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lua.h"
#include "lauxlib.h"
#include "ldebug.h"
#include "lobject.h"
#include "lopcodes.h"
#include "lopnames.h"
#include "lstate.h"
#include "lundump.h"
static void PrintFunction(const Proto* f, int full);
#define luaU_print PrintFunction
#define PROGNAME "luac" /* default program name */
#define OUTPUT PROGNAME ".out" /* default output file */
static int listing=0; /* list bytecodes? */
static int dumping=1; /* dump bytecodes? */
static int stripping=0; /* strip debug information? */
static char Output[]={ OUTPUT }; /* default output file name */
static const char* output=Output; /* actual output file name */
static const char* progname=PROGNAME; /* actual program name */
static TString **tmname;
static void fatal(const char* message)
{
fprintf(stderr,"%s: %s\n",progname,message);
exit(EXIT_FAILURE);
}
static void cannot(const char* what)
{
fprintf(stderr,"%s: cannot %s %s: %s\n",progname,what,output,strerror(errno));
exit(EXIT_FAILURE);
}
static void usage(const char* message)
{
if (*message=='-')
fprintf(stderr,"%s: unrecognized option '%s'\n",progname,message);
else
fprintf(stderr,"%s: %s\n",progname,message);
fprintf(stderr,
"usage: %s [options] [filenames]\n"
"Available options are:\n"
" -l list (use -l -l for full listing)\n"
" -o name output to file 'name' (default is \"%s\")\n"
" -p parse only\n"
" -s strip debug information\n"
" -v show version information\n"
" -- stop handling options\n"
" - stop handling options and process stdin\n"
,progname,Output);
exit(EXIT_FAILURE);
}
#define IS(s) (strcmp(argv[i],s)==0)
static int doargs(int argc, char* argv[])
{
int i;
int version=0;
if (argv[0]!=NULL && *argv[0]!=0) progname=argv[0];
for (i=1; i<argc; i++)
{
if (*argv[i]!='-') /* end of options; keep it */
break;
else if (IS("--")) /* end of options; skip it */
{
++i;
if (version) ++version;
break;
}
else if (IS("-")) /* end of options; use stdin */
break;
else if (IS("-l")) /* list */
++listing;
else if (IS("-o")) /* output file */
{
output=argv[++i];
if (output==NULL || *output==0 || (*output=='-' && output[1]!=0))
usage("'-o' needs argument");
if (IS("-")) output=NULL;
}
else if (IS("-p")) /* parse only */
dumping=0;
else if (IS("-s")) /* strip debug information */
stripping=1;
else if (IS("-v")) /* show version */
++version;
else /* unknown option */
usage(argv[i]);
}
if (i==argc && (listing || !dumping))
{
dumping=0;
argv[--i]=Output;
}
if (version)
{
printf("%s\n",LUA_COPYRIGHT);
if (version==argc-1) exit(EXIT_SUCCESS);
}
return i;
}
#define FUNCTION "(function()end)();"
static const char* reader(lua_State* L, void* ud, size_t* size)
{
UNUSED(L);
if ((*(int*)ud)--)
{
*size=sizeof(FUNCTION)-1;
return FUNCTION;
}
else
{
*size=0;
return NULL;
}
}
#define toproto(L,i) getproto(s2v(L->top+(i)))
static const Proto* combine(lua_State* L, int n)
{
if (n==1)
return toproto(L,-1);
else
{
Proto* f;
int i=n;
if (lua_load(L,reader,&i,"=(" PROGNAME ")",NULL)!=LUA_OK) fatal(lua_tostring(L,-1));
f=toproto(L,-1);
for (i=0; i<n; i++)
{
f->p[i]=toproto(L,i-n-1);
if (f->p[i]->sizeupvalues>0) f->p[i]->upvalues[0].instack=0;
}
f->sizelineinfo=0;
return f;
}
}
static int writer(lua_State* L, const void* p, size_t size, void* u)
{
UNUSED(L);
return (fwrite(p,size,1,(FILE*)u)!=1) && (size!=0);
}
static int pmain(lua_State* L)
{
int argc=(int)lua_tointeger(L,1);
char** argv=(char**)lua_touserdata(L,2);
const Proto* f;
int i;
tmname=G(L)->tmname;
if (!lua_checkstack(L,argc)) fatal("too many input files");
for (i=0; i<argc; i++)
{
const char* filename=IS("-") ? NULL : argv[i];
if (luaL_loadfile(L,filename)!=LUA_OK) fatal(lua_tostring(L,-1));
}
f=combine(L,argc);
if (listing) luaU_print(f,listing>1);
if (dumping)
{
FILE* D= (output==NULL) ? stdout : fopen(output,"wb");
if (D==NULL) cannot("open");
lua_lock(L);
luaU_dump(L,f,writer,D,stripping);
lua_unlock(L);
if (ferror(D)) cannot("write");
if (fclose(D)) cannot("close");
}
return 0;
}
int main(int argc, char* argv[])
{
lua_State* L;
int i=doargs(argc,argv);
argc-=i; argv+=i;
if (argc<=0) usage("no input files given");
L=luaL_newstate();
if (L==NULL) fatal("cannot create state: not enough memory");
lua_pushcfunction(L,&pmain);
lua_pushinteger(L,argc);
lua_pushlightuserdata(L,argv);
if (lua_pcall(L,2,0,0)!=LUA_OK) fatal(lua_tostring(L,-1));
lua_close(L);
return EXIT_SUCCESS;
}
/*
** print bytecodes
*/
#define UPVALNAME(x) ((f->upvalues[x].name) ? getstr(f->upvalues[x].name) : "-")
#define VOID(p) ((const void*)(p))
#define eventname(i) (getstr(tmname[i]))
static void PrintString(const TString* ts)
{
const char* s=getstr(ts);
size_t i,n=tsslen(ts);
printf("\"");
for (i=0; i<n; i++)
{
int c=(int)(unsigned char)s[i];
switch (c)
{
case '"':
printf("\\\"");
break;
case '\\':
printf("\\\\");
break;
case '\a':
printf("\\a");
break;
case '\b':
printf("\\b");
break;
case '\f':
printf("\\f");
break;
case '\n':
printf("\\n");
break;
case '\r':
printf("\\r");
break;
case '\t':
printf("\\t");
break;
case '\v':
printf("\\v");
break;
default:
if (isprint(c)) printf("%c",c); else printf("\\%03d",c);
break;
}
}
printf("\"");
}
static void PrintType(const Proto* f, int i)
{
const TValue* o=&f->k[i];
switch (ttypetag(o))
{
case LUA_VNIL:
printf("N");
break;
case LUA_VFALSE:
case LUA_VTRUE:
printf("B");
break;
case LUA_VNUMFLT:
printf("F");
break;
case LUA_VNUMINT:
printf("I");
break;
case LUA_VSHRSTR:
case LUA_VLNGSTR:
printf("S");
break;
default: /* cannot happen */
printf("?%d",ttypetag(o));
break;
}
printf("\t");
}
static void PrintConstant(const Proto* f, int i)
{
const TValue* o=&f->k[i];
switch (ttypetag(o))
{
case LUA_VNIL:
printf("nil");
break;
case LUA_VFALSE:
printf("false");
break;
case LUA_VTRUE:
printf("true");
break;
case LUA_VNUMFLT:
{
char buff[100];
sprintf(buff,LUA_NUMBER_FMT,fltvalue(o));
printf("%s",buff);
if (buff[strspn(buff,"-0123456789")]=='\0') printf(".0");
break;
}
case LUA_VNUMINT:
printf(LUA_INTEGER_FMT,ivalue(o));
break;
case LUA_VSHRSTR:
case LUA_VLNGSTR:
PrintString(tsvalue(o));
break;
default: /* cannot happen */
printf("?%d",ttypetag(o));
break;
}
}
#define COMMENT "\t; "
#define EXTRAARG GETARG_Ax(code[pc+1])
#define EXTRAARGC (EXTRAARG*(MAXARG_C+1))
#define ISK (isk ? "k" : "")
static void PrintCode(const Proto* f)
{
const Instruction* code=f->code;
int pc,n=f->sizecode;
for (pc=0; pc<n; pc++)
{
Instruction i=code[pc];
OpCode o=GET_OPCODE(i);
int a=GETARG_A(i);
int b=GETARG_B(i);
int c=GETARG_C(i);
int ax=GETARG_Ax(i);
int bx=GETARG_Bx(i);
int sb=GETARG_sB(i);
int sc=GETARG_sC(i);
int sbx=GETARG_sBx(i);
int isk=GETARG_k(i);
int line=luaG_getfuncline(f,pc);
printf("\t%d\t",pc+1);
if (line>0) printf("[%d]\t",line); else printf("[-]\t");
printf("%-9s\t",opnames[o]);
switch (o)
{
case OP_MOVE:
printf("%d %d",a,b);
break;
case OP_LOADI:
printf("%d %d",a,sbx);
break;
case OP_LOADF:
printf("%d %d",a,sbx);
break;
case OP_LOADK:
printf("%d %d",a,bx);
printf(COMMENT); PrintConstant(f,bx);
break;
case OP_LOADKX:
printf("%d",a);
printf(COMMENT); PrintConstant(f,EXTRAARG);
break;
case OP_LOADFALSE:
printf("%d",a);
break;
case OP_LFALSESKIP:
printf("%d",a);
break;
case OP_LOADTRUE:
printf("%d",a);
break;
case OP_LOADNIL:
printf("%d %d",a,b);
printf(COMMENT "%d out",b+1);
break;
case OP_GETUPVAL:
printf("%d %d",a,b);
printf(COMMENT "%s",UPVALNAME(b));
break;
case OP_SETUPVAL:
printf("%d %d",a,b);
printf(COMMENT "%s",UPVALNAME(b));
break;
case OP_GETTABUP:
printf("%d %d %d",a,b,c);
printf(COMMENT "%s",UPVALNAME(b));
printf(" "); PrintConstant(f,c);
break;
case OP_GETTABLE:
printf("%d %d %d",a,b,c);
break;
case OP_GETI:
printf("%d %d %d",a,b,c);
break;
case OP_GETFIELD:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_SETTABUP:
printf("%d %d %d%s",a,b,c,ISK);
printf(COMMENT "%s",UPVALNAME(a));
printf(" "); PrintConstant(f,b);
if (isk) { printf(" "); PrintConstant(f,c); }
break;
case OP_SETTABLE:
printf("%d %d %d%s",a,b,c,ISK);
if (isk) { printf(COMMENT); PrintConstant(f,c); }
break;
case OP_SETI:
printf("%d %d %d%s",a,b,c,ISK);
if (isk) { printf(COMMENT); PrintConstant(f,c); }
break;
case OP_SETFIELD:
printf("%d %d %d%s",a,b,c,ISK);
printf(COMMENT); PrintConstant(f,b);
if (isk) { printf(" "); PrintConstant(f,c); }
break;
case OP_NEWTABLE:
printf("%d %d %d",a,b,c);
printf(COMMENT "%d",c+EXTRAARGC);
break;
case OP_SELF:
printf("%d %d %d%s",a,b,c,ISK);
if (isk) { printf(COMMENT); PrintConstant(f,c); }
break;
case OP_ADDI:
printf("%d %d %d",a,b,sc);
break;
case OP_ADDK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_SUBK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_MULK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_MODK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_POWK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_DIVK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_IDIVK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_BANDK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_BORK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_BXORK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_SHRI:
printf("%d %d %d",a,b,sc);
break;
case OP_SHLI:
printf("%d %d %d",a,b,sc);
break;
case OP_ADD:
printf("%d %d %d",a,b,c);
break;
case OP_SUB:
printf("%d %d %d",a,b,c);
break;
case OP_MUL:
printf("%d %d %d",a,b,c);
break;
case OP_MOD:
printf("%d %d %d",a,b,c);
break;
case OP_POW:
printf("%d %d %d",a,b,c);
break;
case OP_DIV:
printf("%d %d %d",a,b,c);
break;
case OP_IDIV:
printf("%d %d %d",a,b,c);
break;
case OP_BAND:
printf("%d %d %d",a,b,c);
break;
case OP_BOR:
printf("%d %d %d",a,b,c);
break;
case OP_BXOR:
printf("%d %d %d",a,b,c);
break;
case OP_SHL:
printf("%d %d %d",a,b,c);
break;
case OP_SHR:
printf("%d %d %d",a,b,c);
break;
case OP_MMBIN:
printf("%d %d %d",a,b,c);
printf(COMMENT "%s",eventname(c));
break;
case OP_MMBINI:
printf("%d %d %d %d",a,sb,c,isk);
printf(COMMENT "%s",eventname(c));
if (isk) printf(" flip");
break;
case OP_MMBINK:
printf("%d %d %d %d",a,b,c,isk);
printf(COMMENT "%s ",eventname(c)); PrintConstant(f,b);
if (isk) printf(" flip");
break;
case OP_UNM:
printf("%d %d",a,b);
break;
case OP_BNOT:
printf("%d %d",a,b);
break;
case OP_NOT:
printf("%d %d",a,b);
break;
case OP_LEN:
printf("%d %d",a,b);
break;
case OP_CONCAT:
printf("%d %d",a,b);
break;
case OP_CLOSE:
printf("%d",a);
break;
case OP_TBC:
printf("%d",a);
break;
case OP_JMP:
printf("%d",GETARG_sJ(i));
printf(COMMENT "to %d",GETARG_sJ(i)+pc+2);
break;
case OP_EQ:
printf("%d %d %d",a,b,isk);
break;
case OP_LT:
printf("%d %d %d",a,b,isk);
break;
case OP_LE:
printf("%d %d %d",a,b,isk);
break;
case OP_EQK:
printf("%d %d %d",a,b,isk);
printf(COMMENT); PrintConstant(f,b);
break;
case OP_EQI:
printf("%d %d %d",a,sb,isk);
break;
case OP_LTI:
printf("%d %d %d",a,sb,isk);
break;
case OP_LEI:
printf("%d %d %d",a,sb,isk);
break;
case OP_GTI:
printf("%d %d %d",a,sb,isk);
break;
case OP_GEI:
printf("%d %d %d",a,sb,isk);
break;
case OP_TEST:
printf("%d %d",a,isk);
break;
case OP_TESTSET:
printf("%d %d %d",a,b,isk);
break;
case OP_CALL:
printf("%d %d %d",a,b,c);
printf(COMMENT);
if (b==0) printf("all in "); else printf("%d in ",b-1);
if (c==0) printf("all out"); else printf("%d out",c-1);
break;
case OP_TAILCALL:
printf("%d %d %d",a,b,c);
printf(COMMENT "%d in",b-1);
break;
case OP_RETURN:
printf("%d %d %d",a,b,c);
printf(COMMENT);
if (b==0) printf("all out"); else printf("%d out",b-1);
break;
case OP_RETURN0:
break;
case OP_RETURN1:
printf("%d",a);
break;
case OP_FORLOOP:
printf("%d %d",a,bx);
printf(COMMENT "to %d",pc-bx+2);
break;
case OP_FORPREP:
printf("%d %d",a,bx);
printf(COMMENT "to %d",pc+bx+2);
break;
case OP_TFORPREP:
printf("%d %d",a,bx);
printf(COMMENT "to %d",pc+bx+2);
break;
case OP_TFORCALL:
printf("%d %d",a,c);
break;
case OP_TFORLOOP:
printf("%d %d",a,bx);
printf(COMMENT "to %d",pc-bx+2);
break;
case OP_SETLIST:
printf("%d %d %d",a,b,c);
if (isk) printf(COMMENT "%d",c+EXTRAARGC);
break;
case OP_CLOSURE:
printf("%d %d",a,bx);
printf(COMMENT "%p",VOID(f->p[bx]));
break;
case OP_VARARG:
printf("%d %d",a,c);
printf(COMMENT);
if (c==0) printf("all out"); else printf("%d out",c-1);
break;
case OP_VARARGPREP:
printf("%d",a);
break;
case OP_EXTRAARG:
printf("%d",ax);
break;
#if 0
default:
printf("%d %d %d",a,b,c);
printf(COMMENT "not handled");
break;
#endif
}
printf("\n");
}
}
#define SS(x) ((x==1)?"":"s")
#define S(x) (int)(x),SS(x)
static void PrintHeader(const Proto* f)
{
const char* s=f->source ? getstr(f->source) : "=?";
if (*s=='@' || *s=='=')
s++;
else if (*s==LUA_SIGNATURE[0])
s="(bstring)";
else
s="(string)";
printf("\n%s <%s:%d,%d> (%d instruction%s at %p)\n",
(f->linedefined==0)?"main":"function",s,
f->linedefined,f->lastlinedefined,
S(f->sizecode),VOID(f));
printf("%d%s param%s, %d slot%s, %d upvalue%s, ",
(int)(f->numparams),f->is_vararg?"+":"",SS(f->numparams),
S(f->maxstacksize),S(f->sizeupvalues));
printf("%d local%s, %d constant%s, %d function%s\n",
S(f->sizelocvars),S(f->sizek),S(f->sizep));
}
static void PrintDebug(const Proto* f)
{
int i,n;
n=f->sizek;
printf("constants (%d) for %p:\n",n,VOID(f));
for (i=0; i<n; i++)
{
printf("\t%d\t",i);
PrintType(f,i);
PrintConstant(f,i);
printf("\n");
}
n=f->sizelocvars;
printf("locals (%d) for %p:\n",n,VOID(f));
for (i=0; i<n; i++)
{
printf("\t%d\t%s\t%d\t%d\n",
i,getstr(f->locvars[i].varname),f->locvars[i].startpc+1,f->locvars[i].endpc+1);
}
n=f->sizeupvalues;
printf("upvalues (%d) for %p:\n",n,VOID(f));
for (i=0; i<n; i++)
{
printf("\t%d\t%s\t%d\t%d\n",
i,UPVALNAME(i),f->upvalues[i].instack,f->upvalues[i].idx);
}
}
static void PrintFunction(const Proto* f, int full)
{
int i,n=f->sizep;
PrintHeader(f);
PrintCode(f);
if (full) PrintDebug(f);
for (i=0; i<n; i++) PrintFunction(f->p[i],full);
}