Required HOOK_Obj access in BIOS

Akash Bhatnagar93368

HI,

I have used the mechanism to calculate the Thread/TSK load, given in the URL http://processors.wiki.ti.com/index.php/Getting_CPU_Load_on_a_per_task_basis.

The sample code is running fine, where I have used one of the function hooked in HOOK module (myHOOK) and that is to be called during context switching of Tasks.

Now, since our system is real time, I need to toggle this profiling at runtime. I have seen the BIOS API doc, which specify that there is one Boolean Flag "callSwitchFxn"

which is used to toggle the function call during context switching.

But when I used C code line "extern HOOK_Obj myHook" in our code, it simply shows "Identifier HOOK_Obj is not found". Is the HOOK_Obj only accessible at compile time? How can I export the variable at run time. I have already included hook,h

Please help.

Thanks

Akash Bhatnagar

over 12 years ago

0 Tom Kopriva over 12 years ago

TI__Mastermind 20480 points

Hi Akash,

what version of BIOS are you using and on what device?

0 Akash Bhatnagar93368 over 12 years ago in reply to Tom Kopriva

Prodigy 130 points

Hi Tom,

I am using BIOS 5.4 and the processor is TMS320CTCI6487 DSP.

Thanks

0 Tom Kopriva over 12 years ago in reply to Akash Bhatnagar93368

TI__Mastermind 20480 points

Hi Akash,

hook functions cannot be disabled in runtime. "callSwitchFxn" only affects whether the function ptr "switchFxn" gets called as one of the hook functions. The other hook functions are still called at runtime.

HOOK_Obj is a generated structure and is not available to the main.c application. You might want to use the array of hook fxns after you got a particular HOOK_Id.

extern HOOK_InitFxn _HOOK_initFxnTable[];
extern HOOK_CreateFxn _HOOK_createFxnTable[];
extern HOOK_DeleteFxn _HOOK_deleteFxnTable[];
extern HOOK_ExitFxn _HOOK_exitFxnTable[];
extern HOOK_ReadyFxn _HOOK_readyFxnTable[];
extern HOOK_SwitchFxn _HOOK_switchFxnTable[];

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Required HOOK_Obj access in BIOS