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Locate functions in RAM (RAMFUNC; .fastrun)

Posted by Christoph Kronen on July 21, 2011
Hey,

since all the tasks are created in RAM, I was asking myself if it is also possible to put functions like Interrupt Handlers into the RAM, too. I found this description in the AT91 lib:


RAMFUNC
Attribute which defines a function to be located
in memory section .fastrun and called via "long calls".
See linker-skript and startup-code to see how the
.fastrun-section is handled.
The definition is not only useful for ISRs but since
ISRs should be executed fast the macro is defined in
this header
*/
#define RAMFUNC __attribute__ ((long_call, section (".fastrun")))


RE: Locate functions in RAM (RAMFUNC; .fastrun)

Posted by Christoph Kronen on July 21, 2011
Thank you for your help, missing the "Edit" button *g*


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