Hi, I'm using gdb and libbfd to retrieve global variables information from an elf file and show it. I can get the following data from libbfd: Global Variable name, address and size. I retrieve the type of the variables and its children using gdb and gdb\MI (ptype, whatis, -var-create & -var-list-children). How can I get the address\siz...
Hey, as an exercise to learn more precisely how c programs work and what minimum level of content must exist for a program to be able to use libc, ive taken it upon myself to attempt to program primarily in x86 assembly using gas and ld. As a fun little challenge, I've successfully assembled and linked several programs linked to differen...
So, we're studying MIPS architecture at school and we're implementing a MIPS32 architecture. I thought I'd use GNU cross-binutils as assembler but I'm getting weird output when dealing with instructions jal, j and jr. The assembler seems to insert the instructions at the wrong places. I have no idea why this happens, and I doubt the MIPS...
I've tried the following, but the resulting file is still an ELF and not purely the section content. $ objcopy --only-section=<name> <infile> <outfile> I just want the contents of the section. Is there any utility that can do this? Any ideas? ...
Suppose I have an ELF binary that's dynamic linked, and I want to override/redirect certain library calls. I know I can do this with LD_PRELOAD, but I want a solution that's permanent in the binary, independent of the environment, and that works for setuid/setgid binaries, none of which LD_PRELOAD can achieve. What I'd like to do is add...