Hi there, and thanks for reading. Here's the story :
My CPU has no MMU (AVR32UC3B), very little RAM (16KB), and is running a modified FreeRTOS. I'd like to have the ability to "load" and run some "standalone" code from RS232 or SDCARD to FLASH as a RTOS task. >From now, this is working, but for convenience, a fully position independent code would be easier to maintain in future. Using the - fPIC or -fpic option, looking at the assembler, the code seems OK : a dynamically computed offset (using PC relative instructions) is applied to every operations. BUT, looking deeply, both DATA and CODE are applied the same base offset ! While this is the expected behavior for CODE (running anywhere in FLASH), loading my CODE 16KB farther into FLASH, doesn't mean moving my RAM from 16KB ! This make only sense when executing CODE +DATA from RAM. I'm looking for a solution to generate position independent *code*, but with position dependent *data* using GCC/LD... Any hints ?
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