int executeMethod(MethodInfo *startup, StackFrame *stack, SimpleConstantPool *p)
{
int i = 0;
int j = 0;
char name[255];
CodeAttribute ca;
memset(&ca, 0 , sizeof(CodeAttribute));
for (j = 0 ; j < startup->attributes_count ; j++) {
convertToCodeAttribute(&ca, &startup->attributes[j]);
getUTF8String(p, ca.attribute_name_index, 255, name);
if (memcmp(name, "Code", 4) != 0) continue;
#if SIMPLE_JVM_DEBUG
printf("----------------------------------------\n");
printf("code dump\n");
printCodeAttribute(&ca, p);
printf("----------------------------------------\n");
#endif
unsigned char *pc = ca.code;
if (run == 0)
exit(1);
do {
#if 1
opCodeFunc func = findOpCodeFunc(pc[0]);
if (func != 0) {
i = func(&pc , &stackFrame, p);
}
if (i < 0) break;
#endif
} while (1);
}
return 0;
}
void printCodeAttribute( CodeAttribute *ca, SimpleConstantPool *p ) {
int i = 0;
int tmp = 0;
char name[255];
unsigned char opCode = 0;
getUTF8String(p,ca->attribute_name_index,255,name);
printf("attribute name : %s\n", name );
printf("attribute length: %d\n", ca->attribute_length );
printf("max_stack: %d\n", ca->max_stack );
printf("max_locals: %d\n", ca->max_locals );
printf("code_length: %d\n", ca->code_length );
unsigned char *pc = ca->code;
i = 0;
do {
char *opName = findOpCode( pc[0] );
if ( opName == 0 ) {
printf("Unknow OpCode %02X\n", pc[0] );
exit(1);
}
printf("%s \n", opName);
#if 0
opCodeFunc func= findOpCodeFunc(pc);
if ( func != 0 )
func(opCode, &stackFrame );
#endif
tmp = findOpCodeOffset(pc[0]);
pc += tmp;
i += tmp;
} while ( i < ca->code_length ) ;
}
