Hi
I want to create a position independent application in Keil for an EFM32 device (Cortex-M3). The application should be loaded by a bootloader. I use the ROPI option when compiling the C-code and the bootloader takes care of updating the interrupt vectors.
The problem I have is that the startup code (__main) still seems to use fixed addressing. Is there a way to make __main position independent or is there another startup function I can use?
Best regards Filip
Hi,
I am reopening this thread as I am having a problem similar to Clive's one. I am working on the STM32F207 Keil development board and I am also having trouble getting the __main compatible with position independence. For example, in the __scatterload we can read such assembly instructions:
BNE 0x0800001E
which is not very nice when you want position independent code. Has anyone got an idea?
PS: Here are some linker error examples I am getting:
.\build\Blinky.axf: Error: L6248E: startup_stm32f2xx.o(.text) in PI region 'ER_IROM1' cannot have address type relocation to __main in PI region 'ER_IROM1'. .\build\Blinky.axf: Error: L6285E: Non-relocatable Load region LR_IROM1 contains R-Type dynamic relocations. First R-Type dynamic relocation found in startup_stm32f2xx.o(.text) at offset 0xe4.