Do .bin files use relative or absolute addresses?

Forum|Forum|3 years ago
May 4, 2023
1 reply
1690 views

I am trying to set up a dual boot system using a bootloader in stm32F7 without using the dual bank operation. I have the bootloader, which can flash the bin files directly to the flash .My concern is whether .bin files contain any address information, if so are they relative? Also, will the jmp instructions work as intended ?

The idea is to use the same linker file to generate the bin files for both memory sections and flash them to different sections using the bootloader. Right now I used different linker scripts for different sections of the memory.

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Best answer by Tesla DeLorean

Most of the branches and calls are self-relative, so within the same section can be moved.

The linker builds assuming a fixed/known working address.

The vector table contains absolute addresses, but could be fixed up if moved to RAM.

To be sure the linker and compiler are building relative code/data, link at two different addresses, and delta the binaries. Should be pretty apparent, pretty quickly..

Tesla DeLoreanBest answer

Guru

Most of the branches and calls are self-relative, so within the same section can be moved.

The linker builds assuming a fixed/known working address.

The vector table contains absolute addresses, but could be fixed up if moved to RAM.

To be sure the linker and compiler are building relative code/data, link at two different addresses, and delta the binaries. Should be pretty apparent, pretty quickly..

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