6 #define OP_STACK_ARGS 2
14 #define OP_LOOKUPSWITCH 512
15 #define OP_NEED_ACTIVATION 1024
16 #define OP_STACK_ARGS2 2048
18 /* 2 = u30 index into multiname
19 m = u30 index into method
20 n = u30 number of params
21 i = u30 index into method info
24 c = u30 index into class
25 s = string (u30 index into strings)
32 {0xa0, "add", "", -2, 1, 0, 0},
33 {0xc5, "add_i", "", -2, 1, 0, 0},
34 {0x86, "astype", "2", -1, 1, 0, 0},
35 {0x87, "astypelate", "", -2, 1, 0, 0},
36 {0xA8, "bitand", "", -2, 1, 0, 0},
37 {0x97, "bitnot", "", -1, 1, 0, 0},
38 {0xa9, "bitor", "", -2, 1, 0, 0},
39 {0xaa, "bitxor", "", -2, 1, 0, 0},
40 {0x41, "call", "n", -2, 1, 0, OP_STACK_ARGS},
41 {0x43, "callmethod", "mn", -1, 1, 0, OP_STACK_ARGS},
42 {0x4c, "callproplex", "2n", -1, 1, 0, OP_STACK_ARGS|OP_STACK_NS},
43 {0x46, "callproperty", "2n", -1, 1, 0, OP_STACK_ARGS|OP_STACK_NS},
44 {0x4f, "callpropvoid", "2n", -1, 0, 0, OP_STACK_ARGS|OP_STACK_NS},
45 {0x44, "callstatic", "in", -1, 1, 0, OP_STACK_ARGS},
46 {0x45, "callsuper", "2n", -1, 1, 0, OP_STACK_ARGS|OP_STACK_NS},
47 {0x4e, "callsupervoid", "2n", -1, 0, 0, OP_STACK_ARGS|OP_STACK_NS},
48 {0x78, "checkfilter", "", -1, 1, 0, 0},
49 {0x80, "coerce", "2", -1, 1, 0, 0},
50 {0x82, "coerce_a", "", -1, 1, 0, 0},
51 {0x85, "coerce_s", "", -1, 1, 0, 0},
52 {0x42, "construct", "n", -1, 1, 0, OP_STACK_ARGS},
53 {0x4a, "constructprop", "2n", -1, 1, 0, OP_STACK_ARGS|OP_STACK_NS},
54 {0x49, "constructsuper", "n", -1, 0, 0, OP_STACK_ARGS},
55 {0x76, "convert_b", "", -1, 1, 0, 0},
56 {0x73, "convert_i", "", -1, 1, 0, 0},
57 {0x75, "convert_d", "", -1, 1, 0, 0},
58 {0x77, "convert_o", "", -1, 1, 0, 0},
59 {0x74, "convert_u", "", -1, 1, 0, 0},
60 {0x70, "convert_s", "", -1, 1, 0, 0},
61 {0xef, "debug", "D", 0, 0, 0, 0},
62 {0xf1, "debugfile", "s", 0, 0, 0, 0},
63 {0xf0, "debugline", "u", 0, 0, 0, 0},
64 {0x94, "declocal", "r", 0, 0, 0, OP_REGISTER},
65 {0xc3, "declocal_i", "r", 0, 0, 0, OP_REGISTER},
66 {0x93, "decrement", "", -1, 1, 0, 0},
67 {0xc1, "decrement_i", "", -1, 1, 0, 0},
68 {0x6a, "deleteproperty", "2", -1, 1, 0, OP_STACK_NS},
69 {0xa3, "divide", "", -2, 1, 0, 0},
70 {0x2a, "dup", "", -1, 2, 0, 0},
71 {0x06, "dxns", "s", 0, 0, 0, OP_SET_DXNS},
72 {0x07, "dxnslate", "", -1, 0, 0, OP_SET_DXNS},
73 {0xab, "equals", "", -2, 1, 0, 0},
74 {0x72, "esc_xattr", "", -1, 1, 0, 0},
75 {0x71, "esc_xelem", "", -1, 1, 0, 0},
76 {0x5e, "findproperty", "2", 0, 1, 0, OP_STACK_NS},
77 {0x5d, "findpropstrict", "2", 0, 1, 0, OP_STACK_NS},
78 {0x59, "getdescendants", "2", -1, 1, 0, OP_STACK_NS},
79 {0x64, "getglobalscope", "", 0, 1, 0, 0},
80 {0x6e, "getglobalslot", "u", 0, 1, 0, 0},
81 {0x60, "getlex", "2", 0, 1, 0, 0}, //multiname may not be runtime
82 {0x62, "getlocal", "r", 0, 1, 0, OP_REGISTER},
83 {0xd0, "getlocal_0", "", 0, 1, 0, OP_REGISTER},
84 {0xd1, "getlocal_1", "", 0, 1, 0, OP_REGISTER},
85 {0xd2, "getlocal_2", "", 0, 1, 0, OP_REGISTER},
86 {0xd3, "getlocal_3", "", 0, 1, 0, OP_REGISTER},
87 {0x66, "getproperty", "2", -1, 1, 0, OP_STACK_NS},
88 {0x65, "getscopeobject", "u", 0, 1, 0, 0}, // u = index into scope stack
89 {0x6c, "getslot", "u", -1, 1, 0, 0},
90 {0x04, "getsuper", "2", -1, 1, 0, OP_STACK_NS},
91 {0xaf, "greaterthan", "", -2, 1, 0, 0},
92 {0xb0, "greaterequals", "", -2, 1, 0, 0},
93 {0x1f, "hasnext", "", -2, 1, 0, 0},
94 {0x32, "hasnext2", "rr", 0, 1, 0, OP_REGISTER},
95 {0x13, "ifeq", "j", -2, 0, 0, OP_BRANCH},
96 {0x12, "iffalse", "j", -1, 0, 0, OP_BRANCH},
97 {0x18, "ifge", "j", -2, 0, 0, OP_BRANCH},
98 {0x17, "ifgt", "j", -2, 0, 0, OP_BRANCH},
99 {0x16, "ifle", "j", -2, 0, 0, OP_BRANCH},
100 {0x15, "iflt", "j", -2, 0, 0, OP_BRANCH},
101 {0x0f, "ifnge", "j", -2, 0, 0, OP_BRANCH},
102 {0x0e, "ifngt", "j", -2, 0, 0, OP_BRANCH},
103 {0x0d, "ifnle", "j", -2, 0, 0, OP_BRANCH},
104 {0x0c, "ifnlt", "j", -2, 0, 0, OP_BRANCH},
105 {0x14, "ifne", "j", -2, 0, 0, OP_BRANCH},
106 {0x19, "ifstricteq", "j", -2, 0, 0, OP_BRANCH},
107 {0x1a, "ifstrictne", "j", -2, 0, 0, OP_BRANCH},
108 {0x11, "iftrue", "j", -1, 0, 0, OP_BRANCH},
109 {0xb4, "in", "", -2, 1, 0, 0},
110 {0x92, "inclocal", "r", 0, 0, 0, OP_REGISTER},
111 {0xc2, "inclocal_i", "r", 0, 0, 0, OP_REGISTER},
112 {0x91, "increment", "", -1, 1, 0, 0},
113 {0xc0, "increment_i", "", -1, 1, 0, 0},
114 {0x68, "initproperty", "2", -2, 0, 0, OP_STACK_NS},
115 {0xb1, "instanceof", "", -2, 1, 0, 0},
116 {0xb2, "istype", "2", -1, 1, 0, 0}, // may not be a runtime multiname
117 {0xb3, "istypelate", "", -2, 1, 0, 0},
118 {0x10, "jump", "j", 0, 0, 0, OP_JUMP},
119 {0x08, "kill", "r", 0, 0, 0, OP_REGISTER},
120 {0x09, "label", "", 0, 0, 0, OP_LABEL},
121 {0xae, "lessequals", "", -2, 1, 0, 0},
122 {0xad, "lessthan", "", -2, 1, 0, 0},
123 {0x1b, "lookupswitch", "S", -1, 0, 0, OP_LOOKUPSWITCH},
124 {0xa5, "lshift", "", -2, 1, 0, 0},
125 {0xa4, "modulo", "", -2, 1, 0, 0},
126 {0xa2, "multiply", "", -2, 1, 0, 0},
127 {0xc7, "multiply_i", "", -2, 1, 0, 0},
128 {0x90, "negate", "", -1, 1, 0, 0},
129 {0xc4, "negate_i", "", -1, 1, 0, 0},
130 {0x57, "newactivation", "", 0, 1, 0, OP_NEED_ACTIVATION},
131 {0x56, "newarray", "n", 0, 1, 0, OP_STACK_ARGS},
132 {0x5a, "newcatch", "u", 0, 1, 0, 0}, //u = index into exception_info
133 {0x58, "newclass", "c", -1, 1, 0, 0}, //c = index into class_info
134 {0x40, "newfunction", "m", 0, 1, 0, 0}, //i = index into method_info
135 {0x55, "newobject", "n", 0, 1, 0, OP_STACK_ARGS2},
136 {0x1e, "nextname", "", -2, 1, 0, 0},
137 {0x23, "nextvalue", "", -2, 1, 0, 0},
138 {0x02, "nop", "", 0, 0, 0, 0},
139 {0x96, "not", "", -1, 1, 0 ,0},
140 {0x29, "pop", "", -1, 0, 0, 0},
141 {0x1d, "popscope", "", 0, 0,-1, 0},
142 {0x24, "pushbyte", "b", 0, 1, 0, 0},
143 {0x2f, "pushdouble", "f", 0, 1, 0, 0}, //index into floats
144 {0x27, "pushfalse", "", 0, 1, 0, 0},
145 {0x2d, "pushint", "i", 0, 1, 0, 0}, //index into ints
146 {0x31, "pushnamespace", "u", 0, 1, 0, 0}, //index into namespace
147 {0x28, "pushnan", "", 0, 1, 0, 0},
148 {0x20, "pushnull", "", 0, 1, 0, 0},
149 {0x30, "pushscope", "", -1, 0, 1, 0},
150 {0x25, "pushshort", "u", 0, 1, 0, 0},
151 {0x2c, "pushstring", "s", 0, 1, 0, 0},
152 {0x26, "pushtrue", "", 0, 1, 0, 0},
153 {0x2e, "pushuint", "U", 0, 1, 0, 0}, //index into uints
154 {0x21, "pushundefined", "", 0, 1, 0, 0},
155 {0x1c, "pushwith", "", -1, 0, 1, 0},
156 {0x48, "returnvalue", "", -1, 0, 0, OP_RETURN},
157 {0x47, "returnvoid", "", 0, 0, 0, OP_RETURN},
158 {0xa6, "rshift", "", -2, 1, 0, 0},
159 {0x63, "setlocal", "r", -1, 0, 0, OP_REGISTER},
160 {0xd4, "setlocal_0", "", -1, 0, 0, OP_REGISTER},
161 {0xd5, "setlocal_1", "", -1, 0, 0, OP_REGISTER},
162 {0xd6, "setlocal_2", "", -1, 0, 0, OP_REGISTER},
163 {0xd7, "setlocal_3", "", -1, 0, 0, OP_REGISTER},
164 {0x6f, "setglobalslot", "u", -1, 0, 0, 0},
165 {0x61, "setproperty", "2", -2, 0, 0, OP_STACK_NS},
166 {0x6d, "setslot", "u", -2, 0, 0, 0},
167 {0x05, "setsuper", "2", -2, 0, 0, OP_STACK_NS},
168 {0xac, "strictequals", "", -2, 1, 0, 0},
169 {0xa1, "subtract", "", -2, 1, 0, 0},
170 {0xc6, "subtract_i", "", -2, 1, 0, 0},
171 {0x2b, "swap", "", -2, 2, 0, 0},
172 {0x03, "throw", "", -1, 0, 0, OP_THROW},
173 {0x95, "typeof", "", -1, 1, 0, 0},
174 {0xa7, "urshift", "", -2, 1, 0, 0},
177 static U8 op2index[256] = {254};
179 opcode_t* opcode_get(U8 op)
182 if(op2index[0]==254) {
183 memset(op2index, 255, sizeof(op2index));
184 for(t=0;t<sizeof(opcodes)/sizeof(opcodes[0]);t++) {
185 op2index[opcodes[t].opcode] = t;
188 if(op2index[op]!=255)
189 return &opcodes[op2index[op]];
193 static code_t*pos2code(code_t**bytepos, code_t*c, int pos, int len)
200 (pos!=len && !bytepos[pos])) {
201 /* flex likes to generate these. yuck. */
203 opcode_t*op = opcode_get(c->opcode);
204 fprintf(stderr, "Warning: Invalid jump instruction \"%s\" from %d to %d (%d)\n", op->name, c->pos, pos, len);
206 fprintf(stderr, "Warning: Invalid jump to %d (%d)\n", pos, len);
211 //opcode_t*op = opcode_get(c->opcode);
212 //fprintf(stderr, "Warning: jump beyond end of code in instruction %s at position %d\n", op->name, c->pos);
219 code_t* code_atposition(codelookup_t*l, int pos)
221 return pos2code(l->bytepos, 0, pos, l->len);
224 void lookupswitch_print(lookupswitch_t*l)
226 printf("default: %08x\n", l->def);
227 code_list_t*t = l->targets;
229 printf("target: %08x\n", t->code);
234 code_t*code_parse(TAG*tag, int len, abc_file_t*file, pool_t*pool, codelookup_t**codelookup)
239 int end=tag->pos+len;
240 //printf("-->\n");fflush(stdout);
242 code_t**bytepos = rfx_calloc(sizeof(code_t*)*len);
244 while(tag->pos<end) {
245 int codepos = tag->pos-start;
246 U8 opcode = swf_GetU8(tag);
247 opcode_t*op = opcode_get(opcode);
249 fprintf(stderr, "Can't parse opcode %02x\n", opcode);
252 //printf("%s\n", op->name);fflush(stdout);
256 bytepos[codepos] = c;
271 if(*p == 'n') { // number
272 data = (void*)(ptroff_t)swf_GetU30(tag);
273 } else if(*p == '2') { //multiname
274 data = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
275 } else if(*p == 'U') { //uint
276 data = (void*)(ptroff_t)pool_lookup_uint(pool, swf_GetU30(tag));
277 } else if(*p == 'I') { //int
278 data = (void*)(ptroff_t)pool_lookup_int(pool, swf_GetU30(tag));
279 } else if(*p == 'f') { //int
280 double*fp = malloc(sizeof(double));
281 *fp = pool_lookup_float(pool, swf_GetU30(tag));
283 } else if(*p == 'm') { //method
284 data = array_getvalue(file->methods, swf_GetU30(tag));
285 } else if(*p == 'c') { //classinfo
286 data = array_getvalue(file->classes, swf_GetU30(tag));
287 } else if(*p == 'i') {
288 data = array_getvalue(file->method_bodies, swf_GetU30(tag));
289 } else if(*p == 'u') { // generic integer
290 data = (void*)(ptroff_t)swf_GetU30(tag);
291 } else if(*p == 'r') { // local register
292 data = (void*)(ptroff_t)swf_GetU30(tag);
293 } else if(*p == 'b') { // byte
294 data = (void*)(ptroff_t)swf_GetU8(tag);
295 } else if(*p == 'j') { // jump
296 int j = swf_GetS24(tag);
297 data = (void*)(ptroff_t)j;
298 } else if(*p == 's') { // string
299 data = strdup((char*)pool_lookup_string(pool, swf_GetU30(tag)));
300 } else if(*p == 'D') { // debug
302 U8 type = swf_GetU8(tag);
304 fprintf(stderr, "Unknown debug type: %02x\n", type);
306 code->data[0] = strdup((char*)pool_lookup_string(pool, swf_GetU30(tag)));
308 code->data[1] = (void*)(ptroff_t)swf_GetU8(tag);
311 } else if(*p == 'S') { // switch statement
312 lookupswitch_t*l = malloc(sizeof(lookupswitch_t));
313 l->def = (code_t*)(ptroff_t)swf_GetS24(tag);
314 l->targets = list_new();
315 int num = swf_GetU30(tag)+1;
318 list_append(l->targets, (code_t*)(ptroff_t)swf_GetS24(tag));
321 printf("Can't parse opcode param type \"%c\" (for op %02x %s).\n", *p, code->opcode, op->name);
325 code->data[pos++] = data;
330 //#define DEBUG_BYTES
334 code_t*c = bytepos[t];
336 opcode_t*op = opcode_get(c->opcode);
337 if(op->flags & (OP_JUMP|OP_BRANCH)) {
338 printf("%5d) %02x %s %d\n", t, tag->data[start+t], op->name, c->data[0]);
340 printf("%5d) %02x %s\n", t, tag->data[start+t], op->name);
343 printf("%5d) %02x\n", t, tag->data[start+t]);
346 //printf("%5d) %02x\n", t, tag->data[start+t]);
351 opcode_t*op = opcode_get(c->opcode);
352 if(op->flags & (OP_JUMP|OP_BRANCH)) {
353 int j = ((int)(ptroff_t)c->data[0]);
354 c->branch = pos2code(bytepos,c,j+4,len);
355 } else if(op->flags & (OP_LOOKUPSWITCH)) {
356 lookupswitch_t*l = (lookupswitch_t*)c->data[0];
358 l->def = pos2code(bytepos,c,(ptroff_t)l->def+offset,len);
359 code_list_t*t=l->targets;
361 t->code = pos2code(bytepos,c,(ptroff_t)t->code+offset,len);
369 (*codelookup) = malloc(sizeof(codelookup_t));
370 (*codelookup)->bytepos = bytepos;
371 (*codelookup)->len = len;
379 void codelookup_free(codelookup_t*codelookup)
381 free(codelookup->bytepos);codelookup->bytepos=0;
385 code_t*code_find_start(code_t*c)
392 void code_free(code_t*c)
394 c = code_find_start(c);
396 code_t*next = c->next;
397 opcode_t*op = opcode_get(c->opcode);
398 char*p = op?op->params:"";
401 void*data = c->data[pos];
402 if(*p == '2') { //multiname
403 multiname_destroy(data);
404 } else if(strchr("sDf", *p)) {
406 } else if(strchr("S", *p)) {
407 lookupswitch_t*l = (lookupswitch_t*)data;
408 list_free(l->targets);l->targets=0;
414 memset(c, 0, sizeof(c));
420 static int opcode_write(TAG*tag, code_t*c, pool_t*pool, abc_file_t*file, int length)
422 opcode_t*op = opcode_get(c->opcode);
428 swf_SetU8(tag, c->opcode);
432 void*data = c->data[pos++];
434 if(*p == 'n') { // number
435 len += swf_SetU30(tag, (ptroff_t)data);
436 } else if(*p == '2') { //multiname
437 multiname_t*m = (multiname_t*)data;
438 len += swf_SetU30(tag, pool_register_multiname(pool, m));
439 } else if(*p == 'm') { //method
440 abc_method_t*m = (abc_method_t*)data;
441 len += swf_SetU30(tag, m->index);
442 } else if(*p == 'c') { //classinfo
443 abc_class_t*cls = (abc_class_t*)data;
444 len += swf_SetU30(tag, cls->index);
445 } else if(*p == 'i') { //methodbody
446 abc_method_body_t*m = (abc_method_body_t*)data;
447 len += swf_SetU30(tag, m->index);
448 } else if(*p == 'I') { // int
449 len += swf_SetU30(tag, pool_register_int(pool, (ptroff_t)data));
450 } else if(*p == 'U') { // uint
451 len += swf_SetU30(tag, pool_register_uint(pool, (ptroff_t)data));
452 } else if(*p == 'f') { // float
453 len += swf_SetU30(tag, pool_register_float(pool, *(double*)data));
454 } else if(*p == 'u') { // integer
455 len += swf_SetU30(tag, (ptroff_t)data);
456 } else if(*p == 'r') { // integer
457 len += swf_SetU30(tag, (ptroff_t)data);
458 } else if(*p == 'b') { // byte
460 swf_SetU8(tag, (ptroff_t)data);
462 } else if(*p == 'j') { // jump
463 int skip = length-c->pos-4;
465 skip = (c->branch->pos) - c->pos - 4;
466 len += swf_SetS24(tag, skip);
467 } else if(*p == 's') { // string
468 int index = pool_register_string(pool, data);
469 len += swf_SetU30(tag, index);
470 } else if(*p == 'D') { // debug statement
474 len+=swf_SetU30(tag, pool_register_string(pool,c->data[0]));
476 swf_SetU8(tag, (ptroff_t)c->data[1]);
478 len+=swf_SetU30(tag, 0);
479 } else if(*p == 'S') { // switch statement
480 lookupswitch_t*l = (lookupswitch_t*)data;
482 len+=swf_SetS24(tag, l->def->pos-c->pos+offset); //default
483 code_list_t*t = l->targets;
485 len+=swf_SetU30(tag, list_length(t)-1); //nr-1
486 code_list_t*t = l->targets;
488 len+=swf_SetS24(tag, t->code->pos - c->pos+offset);
492 len+=swf_SetU30(tag, 0); //nr-1
493 len+=swf_SetS24(tag, l->def->pos-c->pos+offset);
496 printf("Can't parse opcode param type \"%c\"\n", *p);
503 void code_write(TAG*tag, code_t*code, pool_t*pool, abc_file_t*file)
505 code = code_find_start(code);
511 pos += opcode_write(0, c, pool, file, 0);
515 swf_SetU30(tag, pos);
516 int start = tag->len;
520 opcode_t*op = opcode_get(code->opcode);
521 if(op->flags&(OP_BRANCH|OP_JUMP)) {
524 pos += opcode_write(tag, c, pool, file, length);
527 assert(tag->len - start == pos);
546 static int stack_minus(code_t*c)
548 opcode_t*op = opcode_get(c->opcode);
549 if(op->stack_minus>0) {
550 fprintf(stderr, "Invalid opcode entry %02x %s\n", c->opcode, op->name);
552 int stack = op->stack_minus;
553 if(op->flags&OP_STACK_NS) {
554 multiname_t*m = (multiname_t*)c->data[0];
555 if(multiname_late_namespace(m))
557 if(multiname_late_name(m))
560 if(op->flags&OP_STACK_ARGS || op->flags&OP_STACK_ARGS2) {
561 assert(strchr(op->params, 'n'));
562 int nr = (ptroff_t)(op->params[0]=='n'?c->data[0]:c->data[1]);
564 if(op->flags&OP_STACK_ARGS2)
569 static void handleregister(currentstats_t*stats, int reg)
571 if(reg+1 > stats->maxlocal)
572 stats->maxlocal = reg+1;
575 static void dumpstack(currentstats_t*stats)
578 for(t=0;t<stats->num;t++) {
579 code_t*c = stats->stack[t].code;
580 opcode_t*op = opcode_get(c->opcode);
581 printf("%5d) %c %d:%d %s", t, stats->stack[t].seen?'x':'|',
582 stats->stack[t].stackpos,
583 stats->stack[t].scopepos,
586 if(op->flags&(OP_BRANCH|OP_JUMP)) {
588 printf(" ->%d\n", c->branch->pos);
590 printf(" 00000000\n");
592 if(op->params[0]=='2') {
593 printf(" %s", multiname_to_string(c->data[0]));
599 static char callcode(currentstats_t*stats, int pos, int stack, int scope)
601 while(pos<stats->num) {
602 if(stats->stack[pos].seen) {
603 if(stats->stack[pos].stackpos != stack ||
604 stats->stack[pos].scopepos != scope) {
606 fprintf(stderr, "Stack mismatch at pos %d\n", pos);
607 fprintf(stderr, "Should be: %d:%d, is: %d:%d\n", stack, scope,
608 stats->stack[pos].stackpos, stats->stack[pos].scopepos);
610 /* return error here if we do verification */
616 stats->stack[pos].seen = 1;
617 stats->stack[pos].stackpos = stack;
618 stats->stack[pos].scopepos = scope;
620 code_t*c = stats->stack[pos].code;
621 opcode_t*op = opcode_get(c->opcode);
623 //printf("Walking %s at position %d, stack=%d, scope=%d\n", op->name, pos, stack, scope);
625 stack += stack_minus(c);
628 fprintf(stderr, "error: stack underflow at %d (%s)\n", pos, op->name);
630 /* if we would do true verification (if we would be a vm), this is
631 where we would return the error
636 stack += op->stack_plus;
637 scope += op->scope_stack_plus;
639 if(stack > stats->maxstack)
640 stats->maxstack = stack;
641 if(scope > stats->maxscope)
642 stats->maxscope = scope;
644 if(op->flags & OP_SET_DXNS)
645 stats->flags |= FLAGS_SET_DXNS;
646 if(op->flags & OP_NEED_ACTIVATION)
647 stats->flags |= FLAGS_ACTIVATION;
649 if(op->flags & OP_REGISTER) {
655 handleregister(stats, (ptroff_t)c->data[pos]);
661 handleregister(stats, c->opcode&3);
664 if(op->flags&OP_RETURN) {
665 if(OP_RETURN==0x48/*returnvalue*/) {
667 fprintf(stderr, "return(value) with stackposition %d\n", stack);
668 } else if(OP_RETURN==0x47) {
670 fprintf(stderr, "return(void) with stackposition %d\n", stack);
673 if(op->flags & (OP_THROW|OP_RETURN))
675 if(op->flags & OP_JUMP) {
677 fprintf(stderr, "Error: Invalid jump target in instruction %s at position %d.\n", op->name, pos);
684 if(op->flags & OP_BRANCH) {
686 fprintf(stderr, "Error: Invalid jump target in instruction %s at position %d\n", op->name, pos);
689 int newpos = c->branch->pos;
690 if(!callcode(stats, newpos, stack, scope))
693 if(op->flags & OP_LOOKUPSWITCH) {
694 lookupswitch_t*l = c->data[0];
696 fprintf(stderr, "Error: Invalid jump target in instruction %s at position %d\n", op->name, pos);
699 if(!callcode(stats, l->def->pos, stack, scope))
701 code_list_t*t = l->targets;
704 fprintf(stderr, "Error: Invalid jump target in instruction %s at position %d\n", op->name, pos);
707 if(!callcode(stats, t->code->pos, stack, scope))
715 assert(c->next == stats->stack[pos].code);
721 static currentstats_t* code_get_stats(code_t*code, exception_list_t*exceptions)
723 code = code_find_start(code);
730 currentstats_t* current = malloc(sizeof(currentstats_t));
731 current->stack = rfx_calloc(sizeof(stackpos_t)*num);
732 current->maxlocal = 0;
733 current->maxstack = 0;
734 current->maxscope = 0;
738 //#define DEBUG_BYTES
743 opcode_t*op = opcode_get(c->opcode);
744 if(op->flags & (OP_JUMP|OP_BRANCH)) {
745 printf("%5d) %s %08x\n", t, op->name, c->branch);
746 } else if(op->params[0]=='2') {
747 printf("%5d) %s %s\n", t, op->name, multiname_to_string(c->data[0]));
749 printf("%5d) %s\n", t, op->name);
753 //printf("%5d) %02x\n", t, tag->data[start+t]);
760 current->stack[num].code = c;
766 if(!callcode(current, 0, 0, 0)) {
770 exception_list_t*e = exceptions;
772 if(e->exception->target)
773 callcode(current, e->exception->target->pos, 1, 0);
780 void stats_free(currentstats_t*stats)
783 free(stats->stack);stats->stack=0;
788 int code_dump(code_t*c, exception_list_t*exceptions, abc_file_t*file, char*prefix, FILE*fo)
790 exception_list_t*e = exceptions;
791 c = code_find_start(c);
792 currentstats_t*stats = code_get_stats(c, exceptions);
796 U8 opcode = c->opcode;
798 opcode_t*op = opcode_get(opcode);
802 if(c==e->exception->from)
803 fprintf(fo, "%s TRY {\n", prefix);
804 if(c==e->exception->target) {
805 char*s1 = multiname_to_string(e->exception->exc_type);
806 char*s2 = multiname_to_string(e->exception->var_name);
807 fprintf(fo, "%s CATCH(%s %s)\n", prefix, s1, s2);
815 fprintf(stderr, "Can't parse opcode %02x.\n", opcode);
823 fprintf(fo, "%s%5d) %c %d:%d %s ", prefix, c->pos, stats->stack[c->pos].seen?'x':'|',
824 stats->stack[c->pos].stackpos,
825 stats->stack[c->pos].scopepos,
828 fprintf(fo, "%s%5d) ? ?:? %s ", prefix, c->pos, op->name);
832 void*data = c->data[i];
837 int n = (ptroff_t)data;
838 fprintf(fo, "%d params", n);
839 } else if(*p == '2') {
840 multiname_t*n = (multiname_t*)data;
841 char* m = multiname_to_string(n);
842 fprintf(fo, "%s", m);
844 } else if(*p == 'm') {
845 abc_method_t*m = (abc_method_t*)data;
846 fprintf(fo, "[method %s]", m->name);
847 } else if(*p == 'c') {
848 abc_class_t*cls = (abc_class_t*)data;
849 char*classname = multiname_to_string(cls->classname);
850 fprintf(fo, "[classinfo %s]", classname);
852 } else if(*p == 'i') {
853 abc_method_body_t*b = (abc_method_body_t*)data;
854 fprintf(fo, "[methodbody]");
855 } else if(*p == 'u' || *p == 'I' || *p == 'U') {
856 int n = (ptroff_t)data;
857 fprintf(fo, "%d", n);
858 } else if(*p == 'f') {
859 double f = *(double*)data;
860 fprintf(fo, "%f", f);
861 } else if(*p == 'r') {
862 int n = (ptroff_t)data;
863 fprintf(fo, "r%d", n);
864 } else if(*p == 'b') {
865 int b = (ptroff_t)data;
866 fprintf(fo, "%02x", b);
867 } else if(*p == 'j') {
869 fprintf(fo, "->%d", c->branch->pos);
871 fprintf(fo, "%08x", c->branch);
872 } else if(*p == 's') {
873 fprintf(fo, "\"%s\"", data);
874 } else if(*p == 'D') {
875 fprintf(fo, "[register %02x=%s]", (ptroff_t)c->data[1], (char*)c->data[0]);
876 } else if(*p == 'S') {
877 lookupswitch_t*l = c->data[0];
880 fprintf(fo, "default->%d", l->def->pos);
882 fprintf(fo, "default->00000000", l->def->pos);
883 code_list_t*t = l->targets;
886 fprintf(fo, ",->%d", t->code->pos);
888 fprintf(fo, ",->00000000");
893 fprintf(stderr, "Can't parse opcode param type \"%c\"\n", *p);
905 if(c==e->exception->to) {
906 if(e->exception->target)
907 fprintf(fo, "%s } // END TRY (HANDLER: %d)\n", prefix, e->exception->target->pos);
909 fprintf(fo, "%s } // END TRY (HANDLER: 00000000)\n", prefix);
921 codestats_t* code_get_statistics(code_t*code, exception_list_t*exceptions)
923 currentstats_t*current = code_get_stats(code, exceptions);
926 codestats_t*stats = rfx_calloc(sizeof(codestats_t));
927 stats->local_count = current->maxlocal;
928 stats->max_stack = current->maxstack;
929 stats->max_scope_depth = current->maxscope;
930 stats->flags = current->flags;
932 stats_free(current);current=0;
936 void codestats_free(codestats_t*s)
941 code_t* add_opcode(code_t*atag, U8 op)
943 code_t*tmp = (code_t*)rfx_calloc(sizeof(code_t));
955 void codestats_print(codestats_t*stats)
957 printf("max_stack: %d\n", stats->max_stack);
958 printf("local_count: %d\n", stats->local_count);
959 printf("scope_depth: %d\n", stats->max_scope_depth);