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FreeRTOS Support ArchiveThe FreeRTOS support forum is used to obtain active support directly from Real Time Engineers Ltd. In return for using our top quality software and services for free, we request you play fair and do your bit to help others too! Sign up to receive notifications of new support topics then help where you can.
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ADS 1.2 compiler port questionPosted 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 questionPosted 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 questionPosted 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 questionPosted 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 questionPosted 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 questionPosted 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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