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95
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/**
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* jdisa
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3 |
*
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4 |
* ByteCode Disassembler
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5 |
* See http://java.sun.com/docs/books/jvms/second_edition/html/VMSpecTOC.doc.html
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6 |
*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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11 |
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12 |
#define BUF_SIZE 1023
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13 |
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14 |
typedef unsigned char uchar_t;
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15 |
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typedef uchar_t u1[1];
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typedef uchar_t u2[2];
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typedef uchar_t u4[4];
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19 |
typedef uchar_t u8[8];
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20 |
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21 |
struct Header {
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22 |
u4 magic;
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23 |
u2 minor_version;
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24 |
u2 major_version;
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u2 constant_pool_count;
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26 |
};
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typedef struct Header Header;
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29 |
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int main (int argc, char **argv)
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{
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32 |
FILE *f;
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uchar_t buffer[BUF_SIZE];
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int i;
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35 |
size_t num;
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int OPCODE;
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Header *cf;
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38 |
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if (argc != 2) {
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fprintf (stderr, "Usage: %s <FILE>\n", argv[0]);
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return EXIT_FAILURE;
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42 |
}
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43 |
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44 |
if ((f = fopen (argv[1], "r")) == NULL) {
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perror ("FOPEN");
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return EXIT_FAILURE;
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}
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48 |
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if ((cf = malloc (sizeof (Header))) == NULL)
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return EXIT_FAILURE;
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51 |
if ((num = fread (cf, 1, sizeof (Header), f)) < 1)
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return EXIT_FAILURE;
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53 |
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printf (" MAGIC: %2X%2X%2X%2X\n", cf->magic[0], cf->magic[1], cf->magic[2], cf->magic[3]);
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printf ("VERSION: %02d.%02d\n", cf->major_version[1], cf->major_version[0]);
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printf ("POOLCTN: %2d:%2d\n", cf->constant_pool_count[1], cf->constant_pool_count[0]);
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58 |
if (cf != NULL)
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free (cf);
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60 |
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OPCODE = 1;
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while (!feof (f)) {
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num = fread (buffer, 1, sizeof (buffer), f);
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for (i = 0; i < num; i++) {
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if (OPCODE) {
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switch (buffer[i]) {
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case 50:
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printf ("aaload ");
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break;
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case 83:
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printf ("aastore ");
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break;
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case 1:
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printf ("aconst_null ");
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break;
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case 25:
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printf ("aload ");
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break;
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case 42:
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printf ("aload_0 ");
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break;
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case 43:
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printf ("aload_1 ");
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break;
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case 44:
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printf ("aload_2 ");
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break;
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case 45:
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printf ("aload_3 ");
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break;
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case 189:
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printf ("anewarray ");
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break;
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case 176:
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printf ("areturn ");
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break;
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case 190:
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printf ("arraylength ");
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break;
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case 58:
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printf ("astore ");
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break;
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case 75:
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printf ("astore_0 ");
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break;
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case 76:
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printf ("astore_1 ");
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break;
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case 77:
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printf ("astore_2 ");
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break;
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case 78:
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printf ("astore_3 ");
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break;
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case 191:
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printf ("athrow ");
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break;
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case 51:
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printf ("baload ");
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break;
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case 84:
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printf ("bastore ");
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break;
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case 16:
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printf ("bipush ");
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break;
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case 52:
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printf ("caload ");
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break;
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case 85:
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printf ("castore ");
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break;
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case 192:
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printf ("checkcast ");
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break;
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case 144:
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printf ("d2f ");
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break;
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case 142:
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printf ("d2i ");
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break;
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case 143:
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printf ("d2l ");
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break;
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case 99:
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printf ("dadd ");
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break;
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case 49:
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printf ("daload ");
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break;
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case 82:
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printf ("dastore ");
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break;
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case 152:
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printf ("dcmp ");
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break;
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case 14:
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printf ("dconst_0 ");
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break;
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case 15:
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printf ("dconst_1 ");
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break;
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case 111:
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printf ("ddiv ");
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break;
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case 24:
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printf ("dload ");
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break;
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case 38:
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printf ("dload_0 ");
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break;
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case 39:
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printf ("dload_1 ");
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break;
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case 40:
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printf ("dload_2 ");
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break;
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case 41:
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printf ("dload_3 ");
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180 |
break;
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case 107:
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printf ("dmul ");
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break;
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case 119:
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printf ("dneg ");
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break;
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case 115:
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printf ("drem ");
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break;
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case 175:
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printf ("dreturn ");
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break;
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case 57:
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printf ("dstore ");
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break;
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case 71:
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printf ("dstore_0 ");
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break;
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199 |
case 72:
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printf ("dstore_1 ");
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break;
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case 73:
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203 |
printf ("dstore_2 ");
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204 |
break;
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case 74:
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206 |
printf ("dstore_3 ");
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207 |
break;
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case 103:
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printf ("dsub ");
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break;
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211 |
case 89:
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printf ("dup ");
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break;
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214 |
case 90:
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printf ("dup_x1 ");
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216 |
break;
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217 |
case 91:
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printf ("dup_x2 ");
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219 |
break;
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220 |
case 92:
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printf ("dup2 ");
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break;
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223 |
case 93:
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printf ("dup2_x1 ");
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break;
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226 |
case 94:
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printf ("dup2_x2 ");
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break;
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case 141:
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printf ("f2d ");
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break;
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232 |
case 139:
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printf ("f2i ");
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234 |
break;
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case 140:
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printf ("f2l ");
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break;
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case 98:
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printf ("fadd ");
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240 |
break;
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241 |
case 48:
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242 |
printf ("faload ");
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break;
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244 |
case 81:
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245 |
printf ("fastore ");
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246 |
break;
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247 |
case 150:
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248 |
printf ("fcmpg ");
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249 |
break;
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250 |
case 149:
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251 |
printf ("fcmpl ");
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252 |
break;
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253 |
case 11:
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254 |
printf ("fconst_0 ");
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255 |
break;
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256 |
case 12:
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257 |
printf ("fconst_1 ");
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258 |
break;
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259 |
case 13:
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260 |
printf ("fconst_2 ");
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261 |
break;
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262 |
case 110:
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263 |
printf ("fdiv ");
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264 |
break;
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265 |
case 23:
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266 |
printf ("fload ");
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267 |
break;
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268 |
case 34:
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269 |
printf ("fload_0 ");
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270 |
break;
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271 |
case 35:
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272 |
printf ("fload_1 ");
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273 |
break;
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274 |
case 36:
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275 |
printf ("fload_2 ");
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276 |
break;
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277 |
case 37:
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278 |
printf ("fload_3 ");
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279 |
break;
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280 |
case 106:
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281 |
printf ("fmul ");
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282 |
break;
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283 |
case 118:
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284 |
printf ("fneg ");
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285 |
break;
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286 |
case 114:
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287 |
printf ("frem ");
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288 |
break;
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289 |
case 174:
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290 |
printf ("freturn ");
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291 |
break;
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292 |
case 56:
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293 |
printf ("fstore ");
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294 |
break;
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295 |
case 67:
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296 |
printf ("fstore_0 ");
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297 |
break;
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298 |
case 68:
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299 |
printf ("fstore_1 ");
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300 |
break;
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301 |
case 69:
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302 |
printf ("fstore_2 ");
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303 |
break;
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304 |
case 70:
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305 |
printf ("fstore_3 ");
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306 |
break;
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307 |
case 102:
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308 |
printf ("fsub ");
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309 |
break;
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310 |
case 180:
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311 |
printf ("getfield ");
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312 |
break;
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313 |
case 178:
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314 |
printf ("getstatic ");
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315 |
break;
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316 |
case 167:
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317 |
printf ("goto ");
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318 |
break;
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319 |
case 200:
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320 |
printf ("goto_w ");
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321 |
break;
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322 |
case 145:
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323 |
printf ("i2b ");
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324 |
break;
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325 |
case 146:
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326 |
printf ("i2c ");
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327 |
break;
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328 |
case 135:
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329 |
printf ("i2d ");
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330 |
break;
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331 |
case 134:
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332 |
printf ("i2f ");
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333 |
break;
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334 |
case 133:
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335 |
printf ("i2l ");
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336 |
break;
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337 |
case 147:
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338 |
printf ("i2s ");
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339 |
break;
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340 |
case 96:
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341 |
printf ("iadd ");
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342 |
break;
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343 |
case 46:
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344 |
printf ("iaload ");
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345 |
break;
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346 |
case 126:
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347 |
printf ("iand ");
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348 |
break;
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349 |
case 79:
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350 |
printf ("iastore ");
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351 |
break;
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352 |
case 2:
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353 |
printf ("iconst_m1 ");
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354 |
break;
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355 |
case 3:
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356 |
printf ("iconst_0 ");
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357 |
break;
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358 |
case 4:
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359 |
printf ("iconst_1 ");
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360 |
break;
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361 |
case 5:
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362 |
printf ("iconst_2 ");
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363 |
break;
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364 |
case 6:
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365 |
printf ("iconst_3 ");
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366 |
break;
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367 |
case 7:
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368 |
printf ("iconst_4 ");
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369 |
break;
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370 |
case 8:
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371 |
printf ("iconst_5 ");
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372 |
break;
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373 |
case 108:
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374 |
printf ("idiv ");
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375 |
break;
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376 |
case 165:
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377 |
printf ("if_acmpeq ");
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378 |
break;
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379 |
case 166:
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380 |
printf ("if_acmpne ");
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381 |
break;
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382 |
case 159:
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383 |
printf ("if_icmpeq ");
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|
384 |
break;
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385 |
case 160:
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386 |
printf ("if_icmpne ");
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387 |
break;
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|
388 |
case 161:
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389 |
printf ("if_icmplt ");
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390 |
break;
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391 |
case 162:
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|
392 |
printf ("if_icmpge ");
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393 |
break;
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394 |
case 163:
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395 |
printf ("if_icmpgt ");
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396 |
break;
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397 |
case 164:
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398 |
printf ("if_icmple ");
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|
399 |
break;
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400 |
case 153:
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|
401 |
printf ("ifeq ");
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|
402 |
break;
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403 |
case 154:
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404 |
printf ("ifne ");
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|
405 |
break;
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406 |
case 155:
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|
407 |
printf ("iflt ");
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|
408 |
break;
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409 |
case 156:
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410 |
printf ("ifge ");
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|
411 |
break;
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412 |
case 157:
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413 |
printf ("ifgt ");
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|
414 |
break;
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415 |
case 158:
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|
416 |
printf ("ifle ");
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|
417 |
break;
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|
418 |
case 199:
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|
419 |
printf ("ifnonnull ");
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|
420 |
break;
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|
421 |
case 198:
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|
422 |
printf ("ifnull ");
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|
423 |
break;
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424 |
case 132:
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|
425 |
printf ("iinc %d %d\n", buffer[i + 1], buffer[i + 2]);
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|
|
426 |
i += 2;
|
|
|
427 |
continue;
|
|
|
428 |
break;
|
|
|
429 |
case 21:
|
|
|
430 |
printf ("iload ");
|
|
|
431 |
break;
|
|
|
432 |
case 26:
|
|
|
433 |
printf ("iload_0 ");
|
|
|
434 |
break;
|
|
|
435 |
case 27:
|
|
|
436 |
printf ("iload_1 ");
|
|
|
437 |
break;
|
|
|
438 |
case 28:
|
|
|
439 |
printf ("iload_2 ");
|
|
|
440 |
break;
|
|
|
441 |
case 29:
|
|
|
442 |
printf ("iload_3 ");
|
|
|
443 |
break;
|
|
|
444 |
case 104:
|
|
|
445 |
printf ("imul ");
|
|
|
446 |
break;
|
|
|
447 |
case 116:
|
|
|
448 |
printf ("ineg ");
|
|
|
449 |
break;
|
|
|
450 |
case 193:
|
|
|
451 |
printf ("instanceof ");
|
|
|
452 |
break;
|
|
|
453 |
case 185:
|
|
|
454 |
printf ("invokeinterface ");
|
|
|
455 |
break;
|
|
|
456 |
case 183:
|
|
|
457 |
printf ("invokespecial ");
|
|
|
458 |
break;
|
|
|
459 |
case 184:
|
|
|
460 |
printf ("invokestatic ");
|
|
|
461 |
break;
|
|
|
462 |
case 182:
|
|
|
463 |
printf ("invokevirtual ");
|
|
|
464 |
break;
|
|
|
465 |
case 128:
|
|
|
466 |
printf ("ior ");
|
|
|
467 |
break;
|
|
|
468 |
case 112:
|
|
|
469 |
printf ("irem ");
|
|
|
470 |
break;
|
|
|
471 |
case 172:
|
|
|
472 |
printf ("ireturn ");
|
|
|
473 |
break;
|
|
|
474 |
case 120:
|
|
|
475 |
printf ("ishl ");
|
|
|
476 |
break;
|
|
|
477 |
case 122:
|
|
|
478 |
printf ("ishr ");
|
|
|
479 |
break;
|
|
|
480 |
case 54:
|
|
|
481 |
printf ("istore ");
|
|
|
482 |
break;
|
|
|
483 |
case 59:
|
|
|
484 |
printf ("istore_0 ");
|
|
|
485 |
break;
|
|
|
486 |
case 60:
|
|
|
487 |
printf ("istore_1 ");
|
|
|
488 |
break;
|
|
|
489 |
case 61:
|
|
|
490 |
printf ("istore_2 ");
|
|
|
491 |
break;
|
|
|
492 |
case 62:
|
|
|
493 |
printf ("istore_3 ");
|
|
|
494 |
break;
|
|
|
495 |
case 100:
|
|
|
496 |
printf ("isub ");
|
|
|
497 |
break;
|
|
|
498 |
case 124:
|
|
|
499 |
printf ("iushr ");
|
|
|
500 |
break;
|
|
|
501 |
case 130:
|
|
|
502 |
printf ("ixor ");
|
|
|
503 |
break;
|
|
|
504 |
case 168:
|
|
|
505 |
printf ("jsr ");
|
|
|
506 |
break;
|
|
|
507 |
case 201:
|
|
|
508 |
printf ("jsr_w ");
|
|
|
509 |
break;
|
|
|
510 |
case 138:
|
|
|
511 |
printf ("l2d ");
|
|
|
512 |
break;
|
|
|
513 |
case 137:
|
|
|
514 |
printf ("l2f ");
|
|
|
515 |
break;
|
|
|
516 |
case 136:
|
|
|
517 |
printf ("l2i ");
|
|
|
518 |
break;
|
|
|
519 |
case 97:
|
|
|
520 |
printf ("ladd ");
|
|
|
521 |
break;
|
|
|
522 |
case 47:
|
|
|
523 |
printf ("laload ");
|
|
|
524 |
break;
|
|
|
525 |
case 127:
|
|
|
526 |
printf ("land ");
|
|
|
527 |
break;
|
|
|
528 |
case 80:
|
|
|
529 |
printf ("lastore ");
|
|
|
530 |
break;
|
|
|
531 |
case 148:
|
|
|
532 |
printf ("lcmd ");
|
|
|
533 |
break;
|
|
|
534 |
case 9:
|
|
|
535 |
printf ("lconst_0 ");
|
|
|
536 |
break;
|
|
|
537 |
case 10:
|
|
|
538 |
printf ("lconst_1 ");
|
|
|
539 |
break;
|
|
|
540 |
case 18:
|
|
|
541 |
printf ("ldc ");
|
|
|
542 |
break;
|
|
|
543 |
case 19:
|
|
|
544 |
printf ("ldc_w ");
|
|
|
545 |
break;
|
|
|
546 |
case 20:
|
|
|
547 |
printf ("ldc2_w ");
|
|
|
548 |
break;
|
|
|
549 |
case 109:
|
|
|
550 |
printf ("ldiv ");
|
|
|
551 |
break;
|
|
|
552 |
case 22:
|
|
|
553 |
printf ("lload ");
|
|
|
554 |
break;
|
|
|
555 |
case 30:
|
|
|
556 |
printf ("lload_0 ");
|
|
|
557 |
break;
|
|
|
558 |
case 31:
|
|
|
559 |
printf ("lload_1 ");
|
|
|
560 |
break;
|
|
|
561 |
case 32:
|
|
|
562 |
printf ("lload_2 ");
|
|
|
563 |
break;
|
|
|
564 |
case 33:
|
|
|
565 |
printf ("lload_3 ");
|
|
|
566 |
break;
|
|
|
567 |
case 105:
|
|
|
568 |
printf ("lmul ");
|
|
|
569 |
break;
|
|
|
570 |
case 117:
|
|
|
571 |
printf ("lneg ");
|
|
|
572 |
break;
|
|
|
573 |
case 171:
|
|
|
574 |
printf ("lookupswitch ");
|
|
|
575 |
break;
|
|
|
576 |
case 129:
|
|
|
577 |
printf ("lor ");
|
|
|
578 |
break;
|
|
|
579 |
case 113:
|
|
|
580 |
printf ("lrem ");
|
|
|
581 |
break;
|
|
|
582 |
case 173:
|
|
|
583 |
printf ("lreturn ");
|
|
|
584 |
break;
|
|
|
585 |
case 121:
|
|
|
586 |
printf ("lshl ");
|
|
|
587 |
break;
|
|
|
588 |
case 123:
|
|
|
589 |
printf ("lshr ");
|
|
|
590 |
break;
|
|
|
591 |
case 55:
|
|
|
592 |
printf ("lstore ");
|
|
|
593 |
break;
|
|
|
594 |
case 63:
|
|
|
595 |
printf ("lstore_0 ");
|
|
|
596 |
break;
|
|
|
597 |
case 64:
|
|
|
598 |
printf ("lstore_1 ");
|
|
|
599 |
break;
|
|
|
600 |
case 65:
|
|
|
601 |
printf ("lstore_2 ");
|
|
|
602 |
break;
|
|
|
603 |
case 66:
|
|
|
604 |
printf ("lstore_3 ");
|
|
|
605 |
break;
|
|
|
606 |
case 101:
|
|
|
607 |
printf ("lsub ");
|
|
|
608 |
break;
|
|
|
609 |
case 125:
|
|
|
610 |
printf ("lushr ");
|
|
|
611 |
break;
|
|
|
612 |
case 131:
|
|
|
613 |
printf ("lxor ");
|
|
|
614 |
break;
|
|
|
615 |
case 194:
|
|
|
616 |
printf ("monitorenter ");
|
|
|
617 |
break;
|
|
|
618 |
case 195:
|
|
|
619 |
printf ("monitorexit ");
|
|
|
620 |
break;
|
|
|
621 |
case 197:
|
|
|
622 |
printf ("multianewarray ");
|
|
|
623 |
break;
|
|
|
624 |
case 187:
|
|
|
625 |
printf ("new ");
|
|
|
626 |
break;
|
|
|
627 |
case 188:
|
|
|
628 |
printf ("newarray ");
|
|
|
629 |
break;
|
|
|
630 |
case 0:
|
|
|
631 |
printf ("nop ");
|
|
|
632 |
break;
|
|
|
633 |
case 87:
|
|
|
634 |
printf ("pop ");
|
|
|
635 |
break;
|
|
|
636 |
case 88:
|
|
|
637 |
printf ("pop2 ");
|
|
|
638 |
break;
|
|
|
639 |
case 181:
|
|
|
640 |
printf ("putfield ");
|
|
|
641 |
break;
|
|
|
642 |
case 179:
|
|
|
643 |
printf ("putstatic ");
|
|
|
644 |
break;
|
|
|
645 |
case 169:
|
|
|
646 |
printf ("ret ");
|
|
|
647 |
break;
|
|
|
648 |
case 177:
|
|
|
649 |
printf ("return ");
|
|
|
650 |
break;
|
|
|
651 |
case 53:
|
|
|
652 |
printf ("saload ");
|
|
|
653 |
break;
|
|
|
654 |
case 86:
|
|
|
655 |
printf ("sastore ");
|
|
|
656 |
break;
|
|
|
657 |
case 17:
|
|
|
658 |
printf ("sipush ");
|
|
|
659 |
break;
|
|
|
660 |
case 95:
|
|
|
661 |
printf ("swap ");
|
|
|
662 |
break;
|
|
|
663 |
case 170:
|
|
|
664 |
printf ("tableswitch ");
|
|
|
665 |
break;
|
|
|
666 |
case 196:
|
|
|
667 |
printf ("wide ");
|
|
|
668 |
break;
|
|
|
669 |
case 202: /* reserved item */
|
|
|
670 |
printf ("breakpoint ");
|
|
|
671 |
break;
|
|
|
672 |
case 254: /* reserved item */
|
|
|
673 |
printf ("impdep1 ");
|
|
|
674 |
break;
|
|
|
675 |
case 255: /* reserved item */
|
|
|
676 |
printf ("impdep2 ");
|
|
|
677 |
break;
|
|
|
678 |
default:
|
|
|
679 |
printf ("OPCODE %02X(%d) ", buffer[i], buffer[i]);
|
|
|
680 |
}
|
|
|
681 |
OPCODE = 0;
|
|
|
682 |
} else
|
|
|
683 |
switch (buffer[i]) {
|
|
|
684 |
case '\0':
|
|
|
685 |
case '>':
|
|
|
686 |
case '<':
|
|
|
687 |
printf ("\n");
|
|
|
688 |
OPCODE = 1;
|
|
|
689 |
break;
|
|
|
690 |
default:
|
|
|
691 |
if (isprint (buffer[i]))
|
|
|
692 |
printf ("%c", buffer[i]);
|
|
|
693 |
else
|
|
|
694 |
printf ("%02X ", buffer[i]);
|
|
|
695 |
}
|
|
|
696 |
}
|
|
|
697 |
}
|
|
|
698 |
|
|
|
699 |
printf ("\n");
|
|
|
700 |
|
|
|
701 |
if (f != NULL)
|
|
|
702 |
fclose (f);
|
|
|
703 |
|
|
|
704 |
return EXIT_SUCCESS;
|
|
|
705 |
}
|