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ADS 1.2 compiler port question

Posted by Nobody/Anonymous on March 3, 2006
I want port free rtos use ARM Developer Suite 1.2,but the compiler have some limit: it can't modify "SP" value when use inline assemble, so i can't write "portRESTORE_CONTEXT" and "portSAVE_CONTEXT" in c code;it can't support a function to be "nake" or "task".
how can i do?

kevin

RE: ADS 1.2 compiler port question

Posted by Nobody/Anonymous on March 3, 2006
This is the second message in two days on this. Is this to do with the new Keil/ARM combined offering?

I think in RVDS you can write assembly functions directly in C code just by placing an asm (or __asm?) before the function.

eg

asm void aFunction( void )
{
asm statements go here
}

RE: ADS 1.2 compiler port question

Posted by Nobody/Anonymous on March 6, 2006
Though i can write assmbly function directly in C code, but can't direct access "SP","LR" register, so i can't use inline assembly MACRO in C code, because
some freertos code like "portRESTORE_CONTEXT", "portSAVE_CONTEXT" "portENTER_SWITCHING_ISR" direct use "SP" "LR" register, how can i do?

kevin

RE: ADS 1.2 compiler port question

Posted by Nobody/Anonymous on March 6, 2006
If this is a hard limitation in the compiler then it is going to be difficult. Are there any modes of operation where it allows access? It seems very restrictive.

RE: ADS 1.2 compiler port question

Posted by Nobody/Anonymous on September 8, 2006
Have you figured out the solution for this yet?
I am having the same problem.

RE: ADS 1.2 compiler port question

Posted by Nobody/Anonymous on September 9, 2006
Have a look at the files in FreeRTOS\Source\portable\RVDS\ARM_CM3. These use RVDS but are not for the ARM7. But I'm sure you could copy how it was done.


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