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Questions tagged [objcopy]

142 questions
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Cross compiling for windows. Objcopy appears to be giving bad object file

I have a program I originally wrote in linux which uses objcopy to embed some images within the executable to be used at runtime. I have no problems with this in linux at all and it runs fine. However when I try and cross compile the program for…
Scott
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Error while relocating binary code (gcc -> objdata -> load binary code -> and execute)

I'm implementing a genetic algorithm, the creatures are functions that have three pointers as input and output. All have the form: // No need for global variables void _start (float *i, float *o, float *m) { ... ... ... } The creatures…
Alberto Boldrini
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Do I need to use objcopy before flashing my ARM microcontroller with OpenOCD?

"Normal" ARM cross-compilation for ARM microncontrollers generally consists of three or four steps: Use an assembler to assemble the startup code (if it is assembly) into an object file Use a compiler to compile any source code into object…
Mark
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Use objcopy --gap-fill only for special section

Is it possible to use the objcopy-parameter --gap-fill only for some specific sections? I don't want to fill up everything with e.g. 0xAA because I want to preserv some old section in my existing EEPROM. It is bad when they are overwritten with e.g.…
MKFein
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How do I get the real position of a section in an ELF archive file?

I want to extract a binary section fron a .a ELF archive file in Linux. When I run objdump -h on an archive file, it lists the object files it contains, and the section headers for each section. However, the File Offset column appears to be relative…
ACyclic
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How to use absolute symbols in position independent code

I created an elf file using the following commend: objcopy -F elf64-x86-64 -B i386 -I binary binary_file output_file.o The elf has 3 absolute symbols (binary_start, binray_end, binary_size) I tried to compile this elf into a shared library. The…
Jah
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Which parts of ELF format does objcopy parameter --strip-all remove?

I did compile and link my program and i get a format in ELF32 little endian which is build like this: ELF Header: Magic: 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00 Class: ELF32 Data: …
71GA
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Automake: embedding text files in binary target

I need to embed several text files in a binary. It's currently done with two lines added in configure.in script that do "clean" and perform objcopy to the $target.o files. Don't ask WHY it's required, in this app, it just is. What I want to do is…
Jacek Krysztofik
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gcc:linker: set section size to 8 bytes

I am running arm-none-eabi-objcopy -O verilog -S --reverse-bytes=4 --verilog-data-width 8 -R .comment --gap-fill 0 --pad-to 0x2000 bin/main.elf bin/main.verilog To convert my code in a format suitable for loading in simulation memory via…
vijayvithal
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SDCC produces elf output with sections of NULL type

I am using SDCC to produce an ELF file. I then convert this ELF file to a binary file. Sadly the output is not as expected. The output is not positioned correctly and there are strange zero length sections in the elf. The Questions(s) How do I get…
Maximilian
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Record break in avr-objcopy using gap-fill

I'm using avr-objcopy to join multple sections to get one binary, that will be programmed to flash. avr-objcopy --gap-fill 0xFF -j .section1 -j .section2 -O ihex main.elf main.hex I get HEX file that contains such lines (spaces added for…
NevaDA
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How to avoid CMake writting full path of objects to the static library?

The original issue is here. After a few days, I find the problem is here. I tried to use the following CMakeLists.txt to build tcmalloc_minimal_static.lib: #... # https://github.com/gperftools/gperftools/blob/master/CMakeLists.txt#L593 if(MINGW OR…
Duke M
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Why does objcopy remove my section from binary?

I'm trying to link my tiny bare-metal educational project for ARM. I have one simple assembly source and linker script. There is a special separate section for exception vectors and startup code: .section STARTUP_SECTION, "x" _reset: b…
ardabro
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.rodata section breaks after moving an object out of the function scope

I'm building a simple payload to execute on an ARM64 system that will print a "Hello, world!" string over UART. hello-world-payload.c: #include typedef uint32_t u32; int _start() { const char* txt = "Hello, world!\n"; volatile…
kupper.m
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How to generate an EFI file with objcopy in riscv-gnu-toolchain?

On x86, my system's default objcopy has a target pei-x86-64 that can be used to convert a shared object file to an EFI application. However, the list of supported targets in the riscv-gnu-toolchain I recently built (riscv64-unknown-linux-gnu-gcc)…
Alan Jian
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