Anyone knows how to get system stack pointer?

Xuedong

I am working on something to monitor the stack usage now. In TI's DSP, we have 2 types of stacks: system stack and task stacks.

Reading the API document, it seems to me that task stack pointer can be obtained by using the system call TSK_stat(task, statbuf), where task is the task handle for the task and statbuf is the pointer to the structure type

struct TSK_Stat{

TSK_Attrs attrs;

TSK_Mode mode;

Ptr sp; // this is the one we need

size_t used;

};

However, I don't find any system call to get system stack pointer.

Anyone knows that?

Thanks in advance.

Xuedong

over 16 years ago

0 TommyG over 16 years ago

TI__Genius 13045 points

Xuedong,

You don't mention which device you are working with. Can you clarify?

The C5500 devices have memory mapped stack pointer registers. The details are listed in the data manual for the device you are interested in. Is this what you are looking for?

0 Xuedong over 16 years ago in reply to TommyG

Prodigy 160 points

I am using 6416 fixed-point DSP, Tommy.

You are right, for C5500 devices, they have memory mapped stack pointer registers. Do you know how to get system stack pointer for 6416 devices?

Many thanks.

0 TommyG over 16 years ago in reply to Xuedong

TI__Genius 13045 points

Xuedong,

Sorry, I am not very familiar with the C6000 family. I am C5000 focused. You put your thread under C5000, so I thought you were referring to one of those devices. This thread needs to be moved to C6000 Forum. I'll see if I can get that done, or you can start another query there.

0 Xuedong over 16 years ago in reply to TommyG

Prodigy 160 points

Thanks, Tommy.

0 Brad Griffis over 16 years ago

TI__Guru*** 125430 points

I wrote this article on how to check the various stacks using emulation features:

http://wiki.davincidsp.com/index.php?title=Checking_for_Stack_Overflow_using_Unified_Breakpoint_Manager

If you want to check the code at run-time, you can look for the watermark on the stack. The symbol __stack is created by the linker and is the end of the stack.

Processors

Processors forum

Anyone knows how to get system stack pointer?