machine check exception in MPC566

Dear All,

We are working with MPC566EVB and CodeWarrior Compiler8.1 for coding ou application. Our flow of code is like this.

We are calling a ?contoller()? function with in a main() and this functio is performing a large no. of floating point calculations. Fo initialization, we are using a 565_axiom_flash_init.cfg file in whic necessary registers/bits are initialized that supports floating poin operations and other MPC566 instructions. After compiling/building, we ar downloading the application in Internal Flash and then trying to execute i from debugger.

While debugging, we are able to see the mixed (both C and Assembly) Cod in our main.c file. Now, as soon as we step into the ?controller() function, a ?machine_check_exception? is generated.

Following is the assembly code for the ?controller()? function and th instruction at which this exception occurred:

{ 00002510: 942180E0 stwu rsp,-32544(rsp) 00002514: 7C0802A6 mflr r0 00002518: 90017F24 stw r0,32548(rsp) 0000251C: 39617F20 addi r11,rsp,32544 00002520: 48006745 bl __save_fpr (0x8c64) 00002524: BDC17E48 stmw r14,32328(rsp) 00002528: 7C3F0B78 mr r31,rsp 0000252C: 80010000 lwz r0,0(rsp) 00002530: 3D60FFFE lis r11,-2 00002534: 396B19F0 addi r11,r11,6640 00002538: 7C01596E stwux r0,rsp,r11
Reply to
rajesh shaw
Loading thread data ...

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.