Extracting PC of memory requests

[bakhshalipour]

Hi,

Is there any way to get the program counter of a load/store instruction in higher levels of the memory hierarchy (e.g., L3)? What about lower levels (e.g., Filter Cache)? Does adding the PC to memory requests require co-ordinating with PIN or its interfaces?

Thanks

[hlitz]

there is no easy way. You have to extract it in the decoder using a PIN API, then add it to the ld/st uop, then feed it to filter_cache->load() and add it to the MemReq defined in memory_hierarchy.h

On Wed, Jan 17, 2018 at 9:19 AM, Mohammad Bakhshalipour < notifications@github.com> wrote:

Hi,

Is there any way to get the program counter of a load/store instruction in higher levels of the memory hierarchy (e.g., L3)? What about lower levels (e.g., Filter Cache)? Is adding the PC to the memory requests requires co-ordinate with the PIN or its interfaces?

Thanks

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[bakhshalipour]

Thanks for the response. Any hint regarding what should I do with PIN? Actually, I am unfamiliar with PIN. I found that I should modify a function pointer in zsim.cpp to include PC as one of the arguments that PIN pass to the ZSim. But cannot find where/how PIN treats with this function pointer.

[hlitz]

RTM gives you INS_Address(ins)

On Wed, Jan 17, 2018 at 2:36 PM, Mohammad Bakhshalipour < notifications@github.com> wrote:

Reopened #187 https://github.com/s5z/zsim/issues/187.

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