Problem running code generated with CodeWarrior

[pierreschmidt]

Hello, I modified a project initially written for windriver diab compiler to work with Codewarrior.

I then ran the project with the help of cw_icdppcnexus but experienced a problem after startup when the PC goes to the main function: The PC gets 000000h which makes execution continue at a location where there is no executable code

So I had a look at the assembly instructions equivalency and compared the original Windriver executable file with the CodeWarrior one. Here is the result:

The window on top is the Codewarrior generated code, the second is from Windriver.

Codewarrior generates some extra instructions which make the PC go to 00000h due to SE_BLR instruction (LR is 00000h). After that the code looks very similar for both compilers. Is there a way to disable the generation of those extra instructions?? (does not actually know what those instructions do)

Thanks a lot

P.SCHMIDT

[pierreschmidt · Accepted solution]

I solved this problem. It was in fact due to bad memory mapping

[luciantodor]

I have the same problem and I cannot find the correct configuration for the memory mapping.

Please, can you help me with the memory mappgig?

Thanks!

Here is my memory section from the linker:

MEMORY

{

     /* Interrupt Service Routines */

     flash_rchw : org = 0x00000000, LENGTH = 0x8

     flash_vec : org = 0x20000, LENGTH = 0xD00

     /* 1MB Internal Flash */

     int_flash : org = 0x20D00, LENGTH = 1M - 0x20D00

     /* 80K Internal SRAM */

     int_sram : org = 0x40000000, LENGTH = 80k

     stack : org = 0x00200000, len = 0x0200

}