* GNU linker script - how to automatically distribute code to multiple non-contiguous sections
@ 2018-10-30 20:28 Adrian Muresan
2018-11-02 11:01 ` Florian Weimer
0 siblings, 1 reply; 2+ messages in thread
From: Adrian Muresan @ 2018-10-30 20:28 UTC (permalink / raw)
To: gcc-help
I'm modifying an existing .ld and I have two flash sections for the code. These two flash sections are not contiguous so I cannot merely extend the definition of one of the sections to include the other.
Currently all of the code can fit in sec1 but if I turn off space optimizations, it doesn't fit.
QUESTION
How do I write the .ld to say: place as much of the code as will fit in sec1 and then as much as will fit in sec2 and then ... sec3... etc?
I know how to place specific .obj in specific section but that's not what I want because I'll need to constantly modify the .ld as my code changes.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: GNU linker script - how to automatically distribute code to multiple non-contiguous sections
2018-10-30 20:28 GNU linker script - how to automatically distribute code to multiple non-contiguous sections Adrian Muresan
@ 2018-11-02 11:01 ` Florian Weimer
0 siblings, 0 replies; 2+ messages in thread
From: Florian Weimer @ 2018-11-02 11:01 UTC (permalink / raw)
To: Adrian Muresan; +Cc: gcc-help
* Adrian Muresan:
> I'm modifying an existing .ld and I have two flash sections for the
> code. These two flash sections are not contiguous so I cannot merely
> extend the definition of one of the sections to include the other.
>
> Currently all of the code can fit in sec1 but if I turn off space
> optimizations, it doesn't fit.
>
> QUESTION
>
> How do I write the .ld to say: place as much of the code as will fit
> in sec1 and then as much as will fit in sec2 and then ... sec3... etc?
This is more a question for the binutils list.
Can you use the MEMORY directive and a region specifier on the output
section definition to achieve this? (Sorry, not my area of expertise.)
Florian
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2018-10-30 20:28 GNU linker script - how to automatically distribute code to multiple non-contiguous sections Adrian Muresan
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