Re: [arm-gnu] C run-time initialization code

[Steve Loudon <steve.loudon@xxxxxxxxx>]

On Mar 9, 2010, at 7:21 AM, Richard Gibbs wrote:

> I’m running freeRTOS on a new Cortex M3 processor and am looking for sample c start-up code similar to what’s documented in the “Sourcery G++ Lite ARM EABI Sourcery G++ Lite 2009q3-68 Getting Started” documentation.  There’re various startup “c” code files for GCC for the various board support packages that come with freeRTOS, but they’re  all subject to copyright by the board vendor.  It looks like it all came from the same place, as many of the variables and structures are identical.  For example, the vector table array is named g_pfnVectors and the loop variable used for copying initialized variables from _eText to _data and for clearing bss is called pulDest. 
>  
> Can you help me find this source code?  For freeRTOS, I need to avoid the standard C heap functions, among other things, since freeRTOS provides its own completely different versions of these functions.  I also need to avoid these copyright issues.

Are you using the STM32?  If so, I would start with the Standard Peripheral Library routines that they provide.  You can download the entire Peripheral Library at:   http://www.st.com/stonline/products/support/micro/files/stm32f10x_stdperiph_lib.zip.  In a directory called startup there are gcc, iar and keil assembly routines for startup.

> Thanks,
> Richard
>  
Regards,
Steve Loudon