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Questions - linker-scripts

How to initialize an array of structs to a value other than zero like 0xFF?

I have an array of structs that I need to initialize at compile-time (no memset) to 0xFF. This array will be written as part of the program over erased flash. By setting it to 0xFF, it will remain era...
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Harvey

c

gcc

struct

initialization

linker-scripts

Votes: 0

Answers: 3

Latest Answer

I would use a union of your struct together with an array of the correct size, then initialize the array member. union { struct BlData_t data; uint8_t bytes[sizeof(struct BlData_t)]; } data_wi...
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Nate Eldredge

Different memory for one variable from .bss section

I have a huge DDR memory (2GB) with huge access time and tiny internal RAM (1MB) with tiny access time. At this moment I have whole .bss section in DDR. The .bss section contains one often used variab...
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ToTamire

gcc

linker

ld

linker-scripts

Votes: 0

Answers: 1

Latest Answer

I tried someting like that, but its not work. That couldn't work: the linker doesn't work at the variable level, it works on sections. If foo.os .bss section is not too large, you may be able to mov...
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Employed Russian

How to set an entry address in GNU Linker

I am working on converting a ARMv7 project. The tools are Code Compose Studio, and GNU 7.3.1 compiler. These cannot change. The program entry point is 0x8000 0000 and cannot change. The entry point is...
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SpacemanScott

c++

assembly

arm

gnu-assembler

linker-scripts

Votes: 0

Answers: 1

Latest Answer

After digging more I have found there are attributes necessary to the section command in the assembler file. (assembler is still a learning exercise) It is necessary to append flags to the section te...
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SpacemanScott

can't edit integer with .noinit attribute on STM32L476 with custom linker file

I'm doing my first attempt working with linker files. In the end i want to have a variable that keeps it's value after reset. I'm working with an STM32L476. To achieve this i modified the Linker files...
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Felix Kunz

embedded

stm32

microcontroller

linker-scripts

stm32cubeide

Votes: 0

Answers: 2

Latest Answer

It is not clear from the question whether you want to have a variable that keeps its value when power is removed, or just while power stays on but hardware reset is pulsed. If you want something that ...
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Tom V

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