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RRG-Proxmark3/client/deps/liblua/luac.c
iceman1001 71c86f4b21 style
2024-09-30 10:36:29 +02:00

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/*
** $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)();\n"
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.p+(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;
}
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%s", a, b, c, ISK);
printf(COMMENT "%d in", b - 1);
break;
case OP_RETURN:
printf("%d %d %d%s", a, b, c, ISK);
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 "exit to %d", pc + bx + 3);
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);
}
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