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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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What is "_bp" register in Cygnal port?Posted by Nobody/Anonymous on September 6, 2006 Hi all, I look in the port.c of the Cygnal port and see: push _bp ... pop _bp What is register is that? One more thing, in *pxPortInitialiseStack() function, line 263: *pxTopOfStack++; I think it must be: pxTopOfStack++; Am i right? RE: What is "_bp" register in Cygnal port?Posted by Nobody/Anonymous on September 6, 2006 ref line 263 - looks like a mistake to me. How did that get through? RE: What is "_bp" register in Cygnal port?Posted by Nobody/Anonymous on September 6, 2006 From the SDCC manual: "_bp is the stack frame pointer and is used to compute the offset into the stack for parameters and local variables"
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