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1087
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1 /*
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2 ** $Id: luac.c,v 1.69 2011/11/29 17:46:33 lhf Exp $
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3 ** Lua compiler (saves bytecodes to files; also list bytecodes)
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4 ** See Copyright Notice in lua.h
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5 */
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6
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7 #include <errno.h>
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8 #include <stdio.h>
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9 #include <stdlib.h>
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10 #include <string.h>
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11
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12 #define luac_c
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13 #define LUA_CORE
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14
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15 #include "lua.h"
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16 #include "lauxlib.h"
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17
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18 #include "lobject.h"
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19 #include "lstate.h"
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20 #include "lundump.h"
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21
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22 static void PrintFunction(const Proto* f, int full);
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23 #define luaU_print PrintFunction
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24
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25 #define PROGNAME "luac" /* default program name */
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26 #define OUTPUT PROGNAME ".out" /* default output file */
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27
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28 static int listing=0; /* list bytecodes? */
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29 static int dumping=1; /* dump bytecodes? */
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30 static int stripping=0; /* strip debug information? */
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31 static char Output[]={ OUTPUT }; /* default output file name */
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32 static const char* output=Output; /* actual output file name */
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33 static const char* progname=PROGNAME; /* actual program name */
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34
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35 static void fatal(const char* message)
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36 {
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37 fprintf(stderr,"%s: %s\n",progname,message);
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38 exit(EXIT_FAILURE);
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39 }
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40
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41 static void cannot(const char* what)
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42 {
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43 fprintf(stderr,"%s: cannot %s %s: %s\n",progname,what,output,strerror(errno));
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44 exit(EXIT_FAILURE);
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45 }
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46
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47 static void usage(const char* message)
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48 {
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49 if (*message=='-')
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50 fprintf(stderr,"%s: unrecognized option " LUA_QS "\n",progname,message);
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51 else
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52 fprintf(stderr,"%s: %s\n",progname,message);
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53 fprintf(stderr,
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54 "usage: %s [options] [filenames]\n"
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55 "Available options are:\n"
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56 " -l list (use -l -l for full listing)\n"
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57 " -o name output to file " LUA_QL("name") " (default is \"%s\")\n"
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58 " -p parse only\n"
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59 " -s strip debug information\n"
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60 " -v show version information\n"
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61 " -- stop handling options\n"
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62 " - stop handling options and process stdin\n"
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63 ,progname,Output);
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64 exit(EXIT_FAILURE);
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65 }
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66
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67 #define IS(s) (strcmp(argv[i],s)==0)
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68
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69 static int doargs(int argc, char* argv[])
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70 {
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71 int i;
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72 int version=0;
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73 if (argv[0]!=NULL && *argv[0]!=0) progname=argv[0];
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74 for (i=1; i<argc; i++)
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75 {
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76 if (*argv[i]!='-') /* end of options; keep it */
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77 break;
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78 else if (IS("--")) /* end of options; skip it */
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79 {
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80 ++i;
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81 if (version) ++version;
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82 break;
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83 }
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84 else if (IS("-")) /* end of options; use stdin */
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85 break;
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86 else if (IS("-l")) /* list */
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87 ++listing;
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88 else if (IS("-o")) /* output file */
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89 {
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90 output=argv[++i];
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91 if (output==NULL || *output==0 || (*output=='-' && output[1]!=0))
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92 usage(LUA_QL("-o") " needs argument");
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93 if (IS("-")) output=NULL;
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94 }
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95 else if (IS("-p")) /* parse only */
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96 dumping=0;
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97 else if (IS("-s")) /* strip debug information */
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98 stripping=1;
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99 else if (IS("-v")) /* show version */
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100 ++version;
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101 else /* unknown option */
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102 usage(argv[i]);
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103 }
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104 if (i==argc && (listing || !dumping))
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105 {
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106 dumping=0;
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107 argv[--i]=Output;
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108 }
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109 if (version)
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110 {
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111 printf("%s\n",LUA_COPYRIGHT);
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112 if (version==argc-1) exit(EXIT_SUCCESS);
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113 }
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114 return i;
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115 }
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116
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117 #define FUNCTION "(function()end)();"
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118
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119 static const char* reader(lua_State *L, void *ud, size_t *size)
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120 {
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121 UNUSED(L);
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122 if ((*(int*)ud)--)
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123 {
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124 *size=sizeof(FUNCTION)-1;
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125 return FUNCTION;
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126 }
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127 else
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128 {
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129 *size=0;
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130 return NULL;
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131 }
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132 }
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133
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134 #define toproto(L,i) getproto(L->top+(i))
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135
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136 static const Proto* combine(lua_State* L, int n)
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137 {
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138 if (n==1)
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139 return toproto(L,-1);
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140 else
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141 {
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142 Proto* f;
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143 int i=n;
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144 if (lua_load(L,reader,&i,"=(" PROGNAME ")",NULL)!=LUA_OK) fatal(lua_tostring(L,-1));
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145 f=toproto(L,-1);
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146 for (i=0; i<n; i++)
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147 {
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148 f->p[i]=toproto(L,i-n-1);
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149 if (f->p[i]->sizeupvalues>0) f->p[i]->upvalues[0].instack=0;
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150 }
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151 f->sizelineinfo=0;
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152 return f;
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153 }
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154 }
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155
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156 static int writer(lua_State* L, const void* p, size_t size, void* u)
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157 {
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158 UNUSED(L);
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159 return (fwrite(p,size,1,(FILE*)u)!=1) && (size!=0);
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160 }
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161
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162 static int pmain(lua_State* L)
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163 {
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164 int argc=(int)lua_tointeger(L,1);
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165 char** argv=(char**)lua_touserdata(L,2);
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166 const Proto* f;
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167 int i;
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168 if (!lua_checkstack(L,argc)) fatal("too many input files");
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169 for (i=0; i<argc; i++)
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170 {
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171 const char* filename=IS("-") ? NULL : argv[i];
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172 if (luaL_loadfile(L,filename)!=LUA_OK) fatal(lua_tostring(L,-1));
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173 }
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174 f=combine(L,argc);
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175 if (listing) luaU_print(f,listing>1);
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176 if (dumping)
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177 {
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178 FILE* D= (output==NULL) ? stdout : fopen(output,"wb");
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179 if (D==NULL) cannot("open");
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180 lua_lock(L);
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181 luaU_dump(L,f,writer,D,stripping);
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182 lua_unlock(L);
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183 if (ferror(D)) cannot("write");
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184 if (fclose(D)) cannot("close");
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185 }
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186 return 0;
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187 }
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188
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189 int main(int argc, char* argv[])
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190 {
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191 lua_State* L;
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192 int i=doargs(argc,argv);
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193 argc-=i; argv+=i;
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194 if (argc<=0) usage("no input files given");
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195 L=luaL_newstate();
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196 if (L==NULL) fatal("cannot create state: not enough memory");
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197 lua_pushcfunction(L,&pmain);
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198 lua_pushinteger(L,argc);
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199 lua_pushlightuserdata(L,argv);
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200 if (lua_pcall(L,2,0,0)!=LUA_OK) fatal(lua_tostring(L,-1));
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201 lua_close(L);
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202 return EXIT_SUCCESS;
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203 }
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204
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205 /*
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206 ** $Id: print.c,v 1.68 2011/09/30 10:21:20 lhf Exp $
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207 ** print bytecodes
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208 ** See Copyright Notice in lua.h
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209 */
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210
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211 #include <ctype.h>
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212 #include <stdio.h>
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213
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214 #define luac_c
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215 #define LUA_CORE
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216
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217 #include "ldebug.h"
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218 #include "lobject.h"
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219 #include "lopcodes.h"
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220
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221 #define VOID(p) ((const void*)(p))
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222
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223 static void PrintString(const TString* ts)
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224 {
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225 const char* s=getstr(ts);
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226 size_t i,n=ts->tsv.len;
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227 printf("%c",'"');
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228 for (i=0; i<n; i++)
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229 {
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230 int c=(int)(unsigned char)s[i];
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231 switch (c)
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232 {
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233 case '"': printf("\\\""); break;
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234 case '\\': printf("\\\\"); break;
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235 case '\a': printf("\\a"); break;
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236 case '\b': printf("\\b"); break;
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237 case '\f': printf("\\f"); break;
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238 case '\n': printf("\\n"); break;
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239 case '\r': printf("\\r"); break;
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240 case '\t': printf("\\t"); break;
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241 case '\v': printf("\\v"); break;
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242 default: if (isprint(c))
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243 printf("%c",c);
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244 else
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245 printf("\\%03d",c);
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246 }
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247 }
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248 printf("%c",'"');
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249 }
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250
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251 static void PrintConstant(const Proto* f, int i)
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252 {
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253 const TValue* o=&f->k[i];
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254 switch (ttype(o))
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255 {
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256 case LUA_TNIL:
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257 printf("nil");
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258 break;
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259 case LUA_TBOOLEAN:
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260 printf(bvalue(o) ? "true" : "false");
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261 break;
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262 case LUA_TNUMBER:
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263 printf(LUA_NUMBER_FMT,nvalue(o));
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264 break;
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265 case LUA_TSTRING:
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266 PrintString(rawtsvalue(o));
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267 break;
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268 default: /* cannot happen */
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269 printf("? type=%d",ttype(o));
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270 break;
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271 }
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272 }
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273
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274 #define UPVALNAME(x) ((f->upvalues[x].name) ? getstr(f->upvalues[x].name) : "-")
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275 #define MYK(x) (-1-(x))
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276
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277 static void PrintCode(const Proto* f)
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278 {
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279 const Instruction* code=f->code;
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280 int pc,n=f->sizecode;
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281 for (pc=0; pc<n; pc++)
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282 {
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283 Instruction i=code[pc];
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284 OpCode o=GET_OPCODE(i);
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285 int a=GETARG_A(i);
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286 int b=GETARG_B(i);
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287 int c=GETARG_C(i);
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288 int ax=GETARG_Ax(i);
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289 int bx=GETARG_Bx(i);
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290 int sbx=GETARG_sBx(i);
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291 int line=getfuncline(f,pc);
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292 printf("\t%d\t",pc+1);
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293 if (line>0) printf("[%d]\t",line); else printf("[-]\t");
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294 printf("%-9s\t",luaP_opnames[o]);
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295 switch (getOpMode(o))
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296 {
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297 case iABC:
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298 printf("%d",a);
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299 if (getBMode(o)!=OpArgN) printf(" %d",ISK(b) ? (MYK(INDEXK(b))) : b);
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300 if (getCMode(o)!=OpArgN) printf(" %d",ISK(c) ? (MYK(INDEXK(c))) : c);
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301 break;
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302 case iABx:
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303 printf("%d",a);
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304 if (getBMode(o)==OpArgK) printf(" %d",MYK(bx));
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305 if (getBMode(o)==OpArgU) printf(" %d",bx);
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306 break;
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307 case iAsBx:
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308 printf("%d %d",a,sbx);
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309 break;
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310 case iAx:
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311 printf("%d",MYK(ax));
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312 break;
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313 }
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314 switch (o)
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315 {
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316 case OP_LOADK:
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317 printf("\t; "); PrintConstant(f,bx);
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318 break;
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319 case OP_GETUPVAL:
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320 case OP_SETUPVAL:
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321 printf("\t; %s",UPVALNAME(b));
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322 break;
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323 case OP_GETTABUP:
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324 printf("\t; %s",UPVALNAME(b));
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325 if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); }
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326 break;
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327 case OP_SETTABUP:
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328 printf("\t; %s",UPVALNAME(a));
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329 if (ISK(b)) { printf(" "); PrintConstant(f,INDEXK(b)); }
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330 if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); }
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331 break;
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332 case OP_GETTABLE:
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333 case OP_SELF:
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334 if (ISK(c)) { printf("\t; "); PrintConstant(f,INDEXK(c)); }
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335 break;
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336 case OP_SETTABLE:
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337 case OP_ADD:
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338 case OP_SUB:
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339 case OP_MUL:
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340 case OP_DIV:
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341 case OP_POW:
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342 case OP_EQ:
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343 case OP_LT:
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344 case OP_LE:
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345 if (ISK(b) || ISK(c))
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346 {
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347 printf("\t; ");
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348 if (ISK(b)) PrintConstant(f,INDEXK(b)); else printf("-");
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349 printf(" ");
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350 if (ISK(c)) PrintConstant(f,INDEXK(c)); else printf("-");
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351 }
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352 break;
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353 case OP_JMP:
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354 case OP_FORLOOP:
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355 case OP_FORPREP:
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356 case OP_TFORLOOP:
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357 printf("\t; to %d",sbx+pc+2);
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358 break;
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359 case OP_CLOSURE:
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360 printf("\t; %p",VOID(f->p[bx]));
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361 break;
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362 case OP_SETLIST:
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363 if (c==0) printf("\t; %d",(int)code[++pc]); else printf("\t; %d",c);
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364 break;
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365 case OP_EXTRAARG:
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366 printf("\t; "); PrintConstant(f,ax);
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367 break;
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368 default:
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369 break;
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370 }
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371 printf("\n");
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372 }
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373 }
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374
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375 #define SS(x) ((x==1)?"":"s")
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376 #define S(x) (int)(x),SS(x)
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377
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378 static void PrintHeader(const Proto* f)
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379 {
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380 const char* s=f->source ? getstr(f->source) : "=?";
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381 if (*s=='@' || *s=='=')
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382 s++;
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383 else if (*s==LUA_SIGNATURE[0])
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384 s="(bstring)";
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385 else
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386 s="(string)";
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387 printf("\n%s <%s:%d,%d> (%d instruction%s at %p)\n",
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388 (f->linedefined==0)?"main":"function",s,
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389 f->linedefined,f->lastlinedefined,
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390 S(f->sizecode),VOID(f));
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391 printf("%d%s param%s, %d slot%s, %d upvalue%s, ",
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392 (int)(f->numparams),f->is_vararg?"+":"",SS(f->numparams),
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393 S(f->maxstacksize),S(f->sizeupvalues));
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394 printf("%d local%s, %d constant%s, %d function%s\n",
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395 S(f->sizelocvars),S(f->sizek),S(f->sizep));
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396 }
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397
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398 static void PrintDebug(const Proto* f)
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399 {
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400 int i,n;
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401 n=f->sizek;
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402 printf("constants (%d) for %p:\n",n,VOID(f));
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403 for (i=0; i<n; i++)
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404 {
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405 printf("\t%d\t",i+1);
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406 PrintConstant(f,i);
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407 printf("\n");
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408 }
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409 n=f->sizelocvars;
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410 printf("locals (%d) for %p:\n",n,VOID(f));
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411 for (i=0; i<n; i++)
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412 {
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413 printf("\t%d\t%s\t%d\t%d\n",
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414 i,getstr(f->locvars[i].varname),f->locvars[i].startpc+1,f->locvars[i].endpc+1);
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415 }
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416 n=f->sizeupvalues;
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417 printf("upvalues (%d) for %p:\n",n,VOID(f));
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418 for (i=0; i<n; i++)
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419 {
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420 printf("\t%d\t%s\t%d\t%d\n",
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421 i,UPVALNAME(i),f->upvalues[i].instack,f->upvalues[i].idx);
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422 }
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423 }
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424
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425 static void PrintFunction(const Proto* f, int full)
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426 {
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427 int i,n=f->sizep;
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428 PrintHeader(f);
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429 PrintCode(f);
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430 if (full) PrintDebug(f);
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431 for (i=0; i<n; i++) PrintFunction(f->p[i],full);
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432 }
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