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I am writing a tool which uses libbfd and libopcodes in x86-32 and x86-64 Linux to perform disassembly. The problem is that whilst I am able to get libopcodes to disassemble, I am unable to get any instruction information. For the purposes of demonstration, I have made a minimal example which reproduces my issue. The program should disassemble itself from entry point to the first RET / RETQ . The code is a bit hacked up with globals and error checking has been omitted for brevity, etc. but should illustrate the issue clearly. #include <bfd.h> #include <dis-asm.h> #include <stdbool.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <sys/types.h> #include <string.h> #include <ctype.h> #include <limits.h> #include <libiberty.h> /* * Holds state for BFD and libopcodes. */ bfd * abfd = NULL; disassemble_info dinfo = {0}; /* * Temporary hack to signal when disassembling should stop. */ static bool stop_disassembling = FALSE; /* * Gets path to currently running executable. */ bool get_target_path(char * target_path, size_t size) { char * path; ssize_t len; pid_t pid = getpid(); sprintf(target_path, "/proc/%d/exe", (int)pid ); path = strdup(target_path); len = readlink(path, target_path, size); target_path[len] = '\0'; free(path); return TRUE; } /* * libopcodes appends spaces on the end of some instructions so for * comparisons, we want to strip those first. */ void strip_tail(char * str, unsigned int size) { int i; for(i = 0; i < size; i++) { if(!isgraph(str[i])) { str[i] = '\0'; break; } } } /* * Checks whether the current instruction will cause the control flow to not * proceed to the linearly subsequent instruction (e.g. ret, jmp, etc.) */ bool breaks_control_flow(char * str) { if(abfd-

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