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problem in thumb mode

Hi,

I are facing performance related issues in my ARM project, I am using th

ATMEL AT94M55800 ARM7 chip, I planned to go for the thumb mode but it GCC (3.3.2) dose not seem to compile properly in thumb mode. I have tried with -mthumb -mthumb-interwork option as some code need to b in arm mode. Do you guys know how to do this.

Secondly dose gcc have any linker option that can load an object in t flash but run from RAM.If you know any performance improvement methods on AR let me know.

Regards, Anand

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AnandPavaskar
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Make a minimal example and post it here. At least 3.2.1 and 3.3.4 do work with my projects. What goes wrong?

Use the function attribute 'section' to locate the code into an initialized data section. You may get linking overflows due to the maximum reach of a bl instruction (23 bits). If so, make the calls indirect: create a pointer to the function and use the pointer in the call.

Remember to modify the linker script to include the new section into the proper place. (You do have one for your hardware?)

HTH

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Tauno Voipio
tauno voipio (at) iki fi
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Tauno Voipio

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