353 lines
9.8 KiB
C
353 lines
9.8 KiB
C
/*
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** $Id: luac.c,v 1.54 2006/06/02 17:37:11 lhf Exp $
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** Lua compiler (saves bytecodes to files; also list bytecodes)
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** See Copyright Notice in lua.h
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*/
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#define LUAC_CROSS_FILE
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#include "luac_cross.h"
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#include C_HEADER_ERRNO
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#include C_HEADER_STDIO
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#include C_HEADER_STDLIB
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#include C_HEADER_STRING
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#include <time.h>
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#define luac_c
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#define LUA_CORE
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#include "lua.h"
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#include "lauxlib.h"
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#include "lualib.h"
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#include "ldo.h"
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#include "lfunc.h"
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#include "lmem.h"
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#include "lobject.h"
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#include "lopcodes.h"
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#include "lstring.h"
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#include "lundump.h"
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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 int flash=0; /* output flash image */
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static lu_int32 address=0; /* output flash image at absolute location */
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static lu_int32 maxSize=0x40000; /* maximuum uncompressed image size */
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static int lookup=0; /* output lookup-style master combination header */
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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* execute; /* executed a Lua file */
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static const char* progname=PROGNAME; /* actual program name */
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static DumpTargetInfo target;
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void luac_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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#define fatal(s) luac_fatal(s)
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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 " LUA_QS "\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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" - process stdin\n"
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" -l list\n"
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" -o name output to file " LUA_QL("name") " (default is \"%s\")\n"
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" -e name execute a lua source file\n"
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" -f output a flash image file\n"
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" -a addr generate an absolute, rather than position independent flash image file\n"
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" -i generate lookup combination master (default with option -f)\n"
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" -m size maximum LFS image in bytes\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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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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#define IROM0_SEG 0x40210000ul
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#define IROM0_SEGMAX 0x00100000ul
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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("-e")) /* execute a lua source file file */
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{
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execute=argv[++i];
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if (execute ==NULL || *execute==0 || *execute=='-' )
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usage(LUA_QL("-e") " needs argument");
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}
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else if (IS("-f")) /* Flash image file */
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{
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flash=lookup=1;
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}
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else if (IS("-a")) /* Absolue flash image file */
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{
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flash=lookup=1;
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address=strtol(argv[++i],NULL,0);
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size_t offset = (unsigned) (address -IROM0_SEG);
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if (offset > IROM0_SEGMAX)
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usage(LUA_QL("-e") " absolute address must be valid flash address");
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}
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else if (IS("-i")) /* lookup */
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lookup = 1;
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else if (IS("-l")) /* list */
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++listing;
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else if (IS("-m")) /* specify a maximum image size */
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{
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flash=lookup=1;
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maxSize=strtol(argv[++i],NULL,0);
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if (maxSize & 0xFFF)
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usage(LUA_QL("-e") " maximum size must be a multiple of 4,096");
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}
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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) usage(LUA_QL("-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 %s\n",LUA_RELEASE,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 toproto(L,i) (clvalue(L->top+(i))->l.p)
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static TString *corename(lua_State *L, const TString *filename)
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{
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const char *fn = getstr(filename)+1;
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const char *s = strrchr(fn, '/');
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s = s ? s + 1 : fn;
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while (*s == '.') s++;
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const char *e = strchr(s, '.');
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int l = e ? e - s: strlen(s);
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return l ? luaS_newlstr (L, s, l) : luaS_new(L, fn);
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}
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/*
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* If the luac command line includes multiple files or has the -f option
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* then luac generates a main function to reference all sub-main prototypes.
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* This is one of two types:
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* Type 0 The standard luac combination main
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* Type 1 A lookup wrapper that facilitates indexing into the generated protos
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*/
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static const Proto* combine(lua_State* L, int n, int type)
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{
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if (n==1 && type == 0)
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return toproto(L,-1);
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else
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{
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int i;
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Instruction *pc;
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Proto* f=luaF_newproto(L);
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setptvalue2s(L,L->top,f); incr_top(L);
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f->source=luaS_newliteral(L,"=(" PROGNAME ")");
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f->p=luaM_newvector(L,n,Proto*);
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f->sizep=n;
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for (i=0; i<n; i++)
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f->p[i]=toproto(L,i-n-1);
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pc=0;
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if (type == 0) {
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/*
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* Type 0 is as per the standard luac, which is just a main routine which
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* invokes all of the compiled functions sequentially. This is fine if
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* they are self registering modules, but useless otherwise.
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*/
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f->numparams = 0;
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f->maxstacksize = 1;
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f->sizecode = 2*n + 1 ;
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f->sizek = 0;
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f->code = luaM_newvector(L, f->sizecode , Instruction);
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f->k = luaM_newvector(L,f->sizek,TValue);
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for (i=0, pc = f->code; i<n; i++) {
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*pc++ = CREATE_ABx(OP_CLOSURE,0,i);
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*pc++ = CREATE_ABC(OP_CALL,0,1,1);
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}
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*pc++ = CREATE_ABC(OP_RETURN,0,1,0);
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} else {
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/*
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* The Type 1 main() is a lookup which takes a single argument, the name to
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* be resolved. If this matches root name of one of the compiled files then
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* a closure to this file main is returned. Otherwise the Unixtime of the
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* compile and the list of root names is returned.
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*/
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if (n > LFIELDS_PER_FLUSH) {
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#define NO_MOD_ERR_(n) ": Number of modules > " #n
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#define NO_MOD_ERR(n) NO_MOD_ERR_(n)
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usage(LUA_QL("-f") NO_MOD_ERR(LFIELDS_PER_FLUSH));
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}
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f->numparams = 1;
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f->maxstacksize = n + 3;
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f->sizecode = 5*n + 5 ;
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f->sizek = n + 1;
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f->sizelocvars = 0;
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f->code = luaM_newvector(L, f->sizecode , Instruction);
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f->k = luaM_newvector(L,f->sizek,TValue);
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for (i=0, pc = f->code; i<n; i++)
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{
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/* if arg1 == FnameA then return function (...) -- funcA -- end end */
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setsvalue2n(L,f->k+i,corename(L, f->p[i]->source));
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*pc++ = CREATE_ABC(OP_EQ,0,0,RKASK(i));
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*pc++ = CREATE_ABx(OP_JMP,0,MAXARG_sBx+2);
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*pc++ = CREATE_ABx(OP_CLOSURE,1,i);
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*pc++ = CREATE_ABC(OP_RETURN,1,2,0);
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}
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setnvalue(f->k+n, (lua_Number) time(NULL));
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*pc++ = CREATE_ABx(OP_LOADK,1,n);
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*pc++ = CREATE_ABC(OP_NEWTABLE,2,luaO_int2fb(i),0);
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for (i=0; i<n; i++)
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*pc++ = CREATE_ABx(OP_LOADK,i+3,i);
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*pc++ = CREATE_ABC(OP_SETLIST,2,i,1);
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*pc++ = CREATE_ABC(OP_RETURN,1,3,0);
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*pc++ = CREATE_ABC(OP_RETURN,0,1,0);
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}
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lua_assert((pc-f->code) == f->sizecode);
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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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struct Smain {
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int argc;
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char** argv;
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};
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extern uint dumpToFlashImage (lua_State* L,const Proto *main, lua_Writer w,
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void* data, int strip,
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lu_int32 address, lu_int32 maxSize);
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static int pmain(lua_State* L)
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{
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struct Smain* s = (struct Smain*)lua_touserdata(L, 1);
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int argc=s->argc;
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char** argv=s->argv;
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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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if (execute)
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{
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if (luaL_loadfile(L,execute)!=0) fatal(lua_tostring(L,-1));
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luaL_openlibs(L);
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lua_pushstring(L, execute);
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if (lua_pcall(L, 1, 1, 0)) fatal(lua_tostring(L,-1));
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if (!lua_isfunction(L, -1))
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{
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lua_pop(L,1);
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if(argc == 0) return 0;
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execute = NULL;
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}
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}
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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)!=0) fatal(lua_tostring(L,-1));
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}
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f=combine(L,argc + (execute ? 1: 0), lookup);
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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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int result;
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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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if (flash)
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{
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result=dumpToFlashImage(L,f,writer, D, stripping, address, maxSize);
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} else
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{
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result=luaU_dump_crosscompile(L,f,writer,D,stripping,target);
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}
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lua_unlock(L);
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if (result==LUA_ERR_CC_INTOVERFLOW) fatal("value too big or small for target integer type");
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if (result==LUA_ERR_CC_NOTINTEGER) fatal("target lua_Number is integral but fractional value found");
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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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struct Smain s;
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int test=1;
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target.little_endian=*(char*)&test;
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target.sizeof_int=sizeof(int);
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target.sizeof_strsize_t=sizeof(strsize_t);
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target.sizeof_lua_Number=sizeof(lua_Number);
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target.lua_Number_integral=(((lua_Number)0.5)==0);
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target.is_arm_fpa=0;
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int i=doargs(argc,argv);
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argc-=i; argv+=i;
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if (argc<=0 && execute==0) usage("no input files given");
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L=lua_open();
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if (L==NULL) fatal("not enough memory for state");
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s.argc=argc;
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s.argv=argv;
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if (lua_cpcall(L,pmain,&s)!=0) 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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