Is it possible to clear the command window of gdb? I mean, is there a command in gdb that do the same (for the command windows) as the clear command in a bash terminal?

I have updated my arm-none-eabi GCC and the associated tools and rebuilt an embedded project I develop. $ arm-none-eabi-ld --version GNU ld (GNU Binutils) 2.39 Suddenly, I'm getting the warning /u...

I am following a website ( http://wiki.osdev.org/GCC_Cross-Compiler ) to learn how to cross compile some code for different architectures. So, the first step is to download and compile Binutils for...

I have a requirement on changing certain symbols from shared library (.so) files like below example: i need to rename symbol abc in .so file to symbol xyz. I have a tool to replace it in header fil...

In modern linux almost all objects are stripped and splitted in two parts (two files). First is executable itself and second is debug symbols, stripped out from original ELF. Such files are created...

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...

I have a ELF file and I want to get a hex or bin file of my code from it. In the terminal, if a do a file main, which is my file, it shows: main: ELF 32-bit LSB executable, UCB RISC-V, version 1 (S...

When using GCC to compile most things, I get this error: /..//bin/ld: cannot find crtbeginS.o: No such file or directory crtbeginS.o exists at /usr/local/lib/gcc/x86_64-unknown-linux-gnu/6.0.0/c...

I'd like to know how to get this berkeley format output: $ size --format=berkeley /bin/ls text data bss dec hex filename 124042 4728 4832 133602 209e2 /bin/ls From this sysv format output: $ si...

Consider the hello world C program: hello.c: #include "stdio.h" int main() { printf("Hello, World!\n"); } If I call: $ gcc -c hello.c -o hello.o It will produce an ELF Relocatable File hel...

I try to find the exact line of a call in the backtrace in C++ program. Right now I am using these lines (from the man page of backtrace) to get the trace: void *bt_buffer[1000]; char **bt_strin...

From the bottom of any auto-generated STM32CubeMx-generated linker script: /* Remove information from the standard libraries */ /DISCARD/ : { libc.a ( * ) libm.a ( * ) libgcc.a ( * ) } From the...

I'm learning about the layout of executable binaries. My end goal is to analyze a specific executable for things that could be refactored (in its source) to reduce the compiled output size. I've b...

I have two shared libraries: liba and libb, where libb depends on liba and an executable which uses libb. I faced a problem building the project using CMake for aarch64 architecture, while everythi...

Is there a sort of official documentation about version compatibility between binutils, glibc and GCC? I found this matrix for binutils vs GCC version compatibility. It would be good to have someth...

I have received an error message when compiled "make" $ make g++ -fopenmp -o lang.test main.o -I../../../include/Lheader -I../../../include -L../../../lib/ -llmi -lblas -lboost_regex -lpthread -ll...

The GNU ld (linker script) manual Section 3.5.5 Source Code Reference has some really important information on how to access linker script "variables" (which are actually just integer add...

I'm experimenting with the concept of pure-static-linked PIE executables on Linux, but running into the problem that the GNU binutils linker insists on adding a PT_INTERP header to the output binar...

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, I've taken it upon myself to attempt to program primari...

The musl C library has only an approximative implementation of symbol versioning. This can result in symbols being bound together that have different symbol versions, something which would not happ...

I am trying to set up a completely recent and up to date gcc environment... basically gcc 4.6.3 and binutils 2.22. Not the fairly old gcc 4.2.1 (llvm) that comes with Xcode 4.2.1. My problem is not...

So I can add a link to a debug symbol file like this objcopy --add-gnu-debuglink=$name.dbg $name, but how can I later retrieve that value again? I checked with readelf -a and grepped for \.dbg wit...

I want to compile this source code in Windows (It just an example): start: NOP NOP When I compile it with NASM or FASM, output file length is 2 bytes. But when I compile it with GNU assemb...

Sometimes when I do nm on a .so file (for example, libstdc++.so.6), it says no symbols, and I need to use nm --dynamic. But for some other .so files, I can see the symbols without --dynamic. The ...

In a comment to this question, Unexpected behaviour in simple pointer arithmetics in kernel space C code, Michael Petch wrote, "The 64-bit ELF format supports 32-bit code sections." I have a worki...