450 lines
10 KiB
C
450 lines
10 KiB
C
/*
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** $Id: luac.c,v 1.75 2015/03/12 01:58:27 lhf Exp $
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** Lua compiler (saves bytecodes to files; also lists bytecodes)
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** See Copyright Notice in lua.h
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*/
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#define luac_c
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#define LUA_CORE
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#include "lprefix.h"
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#include <ctype.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "lua.h"
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#include "lauxlib.h"
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#include "lobject.h"
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#include "lstate.h"
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#include "lundump.h"
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static void PrintFunction(const Proto* f, int full);
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#define luaU_print PrintFunction
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#define PROGNAME "luac" /* default program name */
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#define OUTPUT PROGNAME ".out" /* default output file */
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static int listing=0; /* list bytecodes? */
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static int dumping=1; /* dump bytecodes? */
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static int stripping=0; /* strip debug information? */
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static char Output[]={ OUTPUT }; /* default output file name */
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static const char* output=Output; /* actual output file name */
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static const char* progname=PROGNAME; /* actual program name */
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static void fatal(const char* message)
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{
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fprintf(stderr,"%s: %s\n",progname,message);
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exit(EXIT_FAILURE);
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}
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static void cannot(const char* what)
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{
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fprintf(stderr,"%s: cannot %s %s: %s\n",progname,what,output,strerror(errno));
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exit(EXIT_FAILURE);
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}
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static void usage(const char* message)
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{
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if (*message=='-')
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fprintf(stderr,"%s: unrecognized option '%s'\n",progname,message);
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else
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fprintf(stderr,"%s: %s\n",progname,message);
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fprintf(stderr,
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"usage: %s [options] [filenames]\n"
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"Available options are:\n"
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" -l list (use -l -l for full listing)\n"
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" -o name output to file 'name' (default is \"%s\")\n"
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" -p parse only\n"
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" -s strip debug information\n"
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" -v show version information\n"
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" -- stop handling options\n"
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" - stop handling options and process stdin\n"
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,progname,Output);
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exit(EXIT_FAILURE);
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}
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#define IS(s) (strcmp(argv[i],s)==0)
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static int doargs(int argc, char* argv[])
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{
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int i;
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int version=0;
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if (argv[0]!=NULL && *argv[0]!=0) progname=argv[0];
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for (i=1; i<argc; i++)
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{
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if (*argv[i]!='-') /* end of options; keep it */
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break;
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else if (IS("--")) /* end of options; skip it */
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{
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++i;
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if (version) ++version;
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break;
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}
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else if (IS("-")) /* end of options; use stdin */
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break;
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else if (IS("-l")) /* list */
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++listing;
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else if (IS("-o")) /* output file */
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{
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output=argv[++i];
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if (output==NULL || *output==0 || (*output=='-' && output[1]!=0))
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usage("'-o' needs argument");
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if (IS("-")) output=NULL;
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}
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else if (IS("-p")) /* parse only */
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dumping=0;
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else if (IS("-s")) /* strip debug information */
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stripping=1;
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else if (IS("-v")) /* show version */
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++version;
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else /* unknown option */
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usage(argv[i]);
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}
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if (i==argc && (listing || !dumping))
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{
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dumping=0;
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argv[--i]=Output;
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}
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if (version)
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{
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printf("%s\n",LUA_COPYRIGHT);
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if (version==argc-1) exit(EXIT_SUCCESS);
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}
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return i;
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}
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#define FUNCTION "(function()end)();"
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static const char* reader(lua_State *L, void *ud, size_t *size)
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{
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UNUSED(L);
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if ((*(int*)ud)--)
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{
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*size=sizeof(FUNCTION)-1;
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return FUNCTION;
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}
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else
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{
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*size=0;
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return NULL;
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}
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}
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#define toproto(L,i) getproto(L->top+(i))
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static const Proto* combine(lua_State* L, int n)
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{
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if (n==1)
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return toproto(L,-1);
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else
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{
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Proto* f;
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int i=n;
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if (lua_load(L,reader,&i,"=(" PROGNAME ")",NULL)!=LUA_OK) fatal(lua_tostring(L,-1));
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f=toproto(L,-1);
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for (i=0; i<n; i++)
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{
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f->p[i]=toproto(L,i-n-1);
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if (f->p[i]->sizeupvalues>0) f->p[i]->upvalues[0].instack=0;
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}
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f->sizelineinfo=0;
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return f;
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}
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}
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static int writer(lua_State* L, const void* p, size_t size, void* u)
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{
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UNUSED(L);
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return (fwrite(p,size,1,(FILE*)u)!=1) && (size!=0);
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}
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static int pmain(lua_State* L)
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{
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int argc=(int)lua_tointeger(L,1);
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char** argv=(char**)lua_touserdata(L,2);
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const Proto* f;
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int i;
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if (!lua_checkstack(L,argc)) fatal("too many input files");
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for (i=0; i<argc; i++)
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{
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const char* filename=IS("-") ? NULL : argv[i];
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if (luaL_loadfile(L,filename)!=LUA_OK) fatal(lua_tostring(L,-1));
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}
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f=combine(L,argc);
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if (listing) luaU_print(f,listing>1);
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if (dumping)
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{
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FILE* D= (output==NULL) ? stdout : fopen(output,"wb");
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if (D==NULL) cannot("open");
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lua_lock(L);
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luaU_dump(L,f,writer,D,stripping);
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lua_unlock(L);
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if (ferror(D)) cannot("write");
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if (fclose(D)) cannot("close");
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}
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return 0;
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}
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int main(int argc, char* argv[])
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{
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lua_State* L;
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int i=doargs(argc,argv);
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argc-=i; argv+=i;
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if (argc<=0) usage("no input files given");
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L=luaL_newstate();
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if (L==NULL) fatal("cannot create state: not enough memory");
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lua_pushcfunction(L,&pmain);
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lua_pushinteger(L,argc);
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lua_pushlightuserdata(L,argv);
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if (lua_pcall(L,2,0,0)!=LUA_OK) fatal(lua_tostring(L,-1));
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lua_close(L);
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return EXIT_SUCCESS;
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}
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/*
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** $Id: luac.c,v 1.75 2015/03/12 01:58:27 lhf Exp $
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** print bytecodes
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** See Copyright Notice in lua.h
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*/
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#include <ctype.h>
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#include <stdio.h>
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#define luac_c
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#define LUA_CORE
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#include "ldebug.h"
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#include "lobject.h"
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#include "lopcodes.h"
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#define VOID(p) ((const void*)(p))
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static void PrintString(const TString* ts)
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{
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const char* s=getstr(ts);
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size_t i,n=tsslen(ts);
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printf("%c",'"');
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for (i=0; i<n; i++)
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{
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int c=(int)(unsigned char)s[i];
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switch (c)
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{
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case '"': printf("\\\""); break;
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case '\\': printf("\\\\"); break;
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case '\a': printf("\\a"); break;
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case '\b': printf("\\b"); break;
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case '\f': printf("\\f"); break;
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case '\n': printf("\\n"); break;
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case '\r': printf("\\r"); break;
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case '\t': printf("\\t"); break;
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case '\v': printf("\\v"); break;
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default: if (isprint(c))
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printf("%c",c);
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else
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printf("\\%03d",c);
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}
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}
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printf("%c",'"');
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}
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static void PrintConstant(const Proto* f, int i)
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{
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const TValue* o=&f->k[i];
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switch (ttype(o))
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{
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case LUA_TNIL:
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printf("nil");
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break;
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case LUA_TBOOLEAN:
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printf(bvalue(o) ? "true" : "false");
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break;
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case LUA_TNUMFLT:
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{
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char buff[100];
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sprintf(buff,LUA_NUMBER_FMT,fltvalue(o));
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printf("%s",buff);
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if (buff[strspn(buff,"-0123456789")]=='\0') printf(".0");
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break;
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}
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case LUA_TNUMINT:
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printf(LUA_INTEGER_FMT,ivalue(o));
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break;
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case LUA_TSHRSTR: case LUA_TLNGSTR:
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PrintString(tsvalue(o));
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break;
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default: /* cannot happen */
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printf("? type=%d",ttype(o));
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break;
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}
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}
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#define UPVALNAME(x) ((f->upvalues[x].name) ? getstr(f->upvalues[x].name) : "-")
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#define MYK(x) (-1-(x))
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static void PrintCode(const Proto* f)
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{
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const Instruction* code=f->code;
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int pc,n=f->sizecode;
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for (pc=0; pc<n; pc++)
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{
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Instruction i=code[pc];
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OpCode o=GET_OPCODE(i);
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int a=GETARG_A(i);
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int b=GETARG_B(i);
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int c=GETARG_C(i);
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int ax=GETARG_Ax(i);
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int bx=GETARG_Bx(i);
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int sbx=GETARG_sBx(i);
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int line=getfuncline(f,pc);
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printf("\t%d\t",pc+1);
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if (line>0) printf("[%d]\t",line); else printf("[-]\t");
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printf("%-9s\t",luaP_opnames[o]);
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switch (getOpMode(o))
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{
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case iABC:
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printf("%d",a);
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if (getBMode(o)!=OpArgN) printf(" %d",ISK(b) ? (MYK(INDEXK(b))) : b);
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if (getCMode(o)!=OpArgN) printf(" %d",ISK(c) ? (MYK(INDEXK(c))) : c);
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break;
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case iABx:
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printf("%d",a);
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if (getBMode(o)==OpArgK) printf(" %d",MYK(bx));
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if (getBMode(o)==OpArgU) printf(" %d",bx);
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break;
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case iAsBx:
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printf("%d %d",a,sbx);
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break;
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case iAx:
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printf("%d",MYK(ax));
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break;
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}
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switch (o)
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{
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case OP_LOADK:
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printf("\t; "); PrintConstant(f,bx);
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break;
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case OP_GETUPVAL:
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case OP_SETUPVAL:
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printf("\t; %s",UPVALNAME(b));
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break;
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case OP_GETTABUP:
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printf("\t; %s",UPVALNAME(b));
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if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); }
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break;
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case OP_SETTABUP:
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printf("\t; %s",UPVALNAME(a));
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if (ISK(b)) { printf(" "); PrintConstant(f,INDEXK(b)); }
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if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); }
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break;
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case OP_GETTABLE:
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case OP_SELF:
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if (ISK(c)) { printf("\t; "); PrintConstant(f,INDEXK(c)); }
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break;
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case OP_SETTABLE:
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case OP_ADD:
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case OP_SUB:
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case OP_MUL:
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case OP_POW:
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case OP_DIV:
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case OP_IDIV:
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case OP_BAND:
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case OP_BOR:
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case OP_BXOR:
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case OP_SHL:
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case OP_SHR:
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case OP_EQ:
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case OP_LT:
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case OP_LE:
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if (ISK(b) || ISK(c))
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{
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printf("\t; ");
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if (ISK(b)) PrintConstant(f,INDEXK(b)); else printf("-");
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printf(" ");
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if (ISK(c)) PrintConstant(f,INDEXK(c)); else printf("-");
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}
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break;
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case OP_JMP:
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case OP_FORLOOP:
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case OP_FORPREP:
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case OP_TFORLOOP:
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printf("\t; to %d",sbx+pc+2);
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break;
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case OP_CLOSURE:
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printf("\t; %p",VOID(f->p[bx]));
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break;
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case OP_SETLIST:
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if (c==0) printf("\t; %d",(int)code[++pc]); else printf("\t; %d",c);
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break;
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case OP_EXTRAARG:
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printf("\t; "); PrintConstant(f,ax);
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break;
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default:
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break;
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}
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printf("\n");
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}
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}
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#define SS(x) ((x==1)?"":"s")
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#define S(x) (int)(x),SS(x)
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static void PrintHeader(const Proto* f)
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{
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const char* s=f->source ? getstr(f->source) : "=?";
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if (*s=='@' || *s=='=')
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s++;
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else if (*s==LUA_SIGNATURE[0])
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s="(bstring)";
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else
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s="(string)";
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printf("\n%s <%s:%d,%d> (%d instruction%s at %p)\n",
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(f->linedefined==0)?"main":"function",s,
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f->linedefined,f->lastlinedefined,
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S(f->sizecode),VOID(f));
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printf("%d%s param%s, %d slot%s, %d upvalue%s, ",
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(int)(f->numparams),f->is_vararg?"+":"",SS(f->numparams),
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S(f->maxstacksize),S(f->sizeupvalues));
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printf("%d local%s, %d constant%s, %d function%s\n",
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S(f->sizelocvars),S(f->sizek),S(f->sizep));
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}
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static void PrintDebug(const Proto* f)
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{
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int i,n;
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n=f->sizek;
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printf("constants (%d) for %p:\n",n,VOID(f));
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for (i=0; i<n; i++)
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{
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printf("\t%d\t",i+1);
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PrintConstant(f,i);
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printf("\n");
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}
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n=f->sizelocvars;
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printf("locals (%d) for %p:\n",n,VOID(f));
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for (i=0; i<n; i++)
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{
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printf("\t%d\t%s\t%d\t%d\n",
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i,getstr(f->locvars[i].varname),f->locvars[i].startpc+1,f->locvars[i].endpc+1);
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}
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n=f->sizeupvalues;
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printf("upvalues (%d) for %p:\n",n,VOID(f));
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for (i=0; i<n; i++)
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{
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printf("\t%d\t%s\t%d\t%d\n",
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i,UPVALNAME(i),f->upvalues[i].instack,f->upvalues[i].idx);
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}
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}
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static void PrintFunction(const Proto* f, int full)
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{
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int i,n=f->sizep;
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PrintHeader(f);
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PrintCode(f);
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if (full) PrintDebug(f);
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for (i=0; i<n; i++) PrintFunction(f->p[i],full);
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}
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