Incorrect disassembly for indirect call using -syntax_intel

From jlari...@gmail.com on September 19, 2010 19:45:38

What version of DynamoRIO are you using? 2.0.0.6 What operating system version are you running on? Windows XP SP3

Steps to reproduce the problem:

Build this code as a standalone app and run with -syntax_intel:

----8<-------8<-------------

#include "dr_api.h"

int main(int argc, char *argv[]) { file_t f; byte *code = "\xff\x15\x3c\x10\x00\x01"; void *drcontext = dr_standalone_init();

f = dr_open_file("c:\out.txt", DR_FILE_WRITE_OVERWRITE); disassemble_with_info(drcontext, code, f, true, true); dr_close_file(f); return 0; }

----8<-------8<-------------

c:\out.txt will contain something like:

0x0040b004 ff 15 3c 10 00 01 call

Note that there is no operand. I'd expect the output to look more like this:

0x0040b004 ff 15 3c 10 00 01 call dword ptr ds:[0x0100013c]