Thanks a lot, Gabe.
I tried using these pseudoinsts inline in the application code. But I
don't know if the assembler
takes the raw instruction as is. For example, I tried the following,
long my_m5_op = ( (0x01 << 26) | (16 << 21) | (17 << 16) | 0x40 );
asm("my_m5_op");
I kept getting compile error with it.
Is there an example how to use this pseudoinst inline?
If this does not work, I will switch back to the model as you suggested and call
Stats::StatEvent(false, true, , ) directly.
john
On Sat, Apr 3, 2010 at 5:42 PM, Gabe Black <[email protected]> wrote:
> The pseudo instructions are for use inside a program like you said, and
> are actual assembly instructions recognized by M5. A program is provided
> in util which, when run from a script, will run the requested assembly
> instruction. That program is makes it easy to use those instructions
> from a script, but it's entirely optional. That said, if you actually
> want to trigger the ops using a particular address instead of using the
> assembly instructions, then you don't want either of these approaches
> which are for use from the simulation target. From inside the simulator
> (ie the cache model) you can just call the functions the assembly
> instructions end up calling which are in sim/pseudo_inst.cc. Even
> better, you could use the same underlying mechanisms those functions use
> directly, avoiding some unnecessary complications.
>
> Gabe
>
> John Xu wrote:
>> Hi,
>>
>> I am looking for a way to reset/dump stats from the application itself
>> in ALPHA_FS mode.
>> As I understood, all the pseudoinsts as part of the m5 util only works
>> in the rcS script which
>> does not understand where the program is in a finer granularity.
>>
>> Is there a way to do so already in M5?
>>
>> The method I am working on is based on a memory mapped variable. And
>> whenever I see a
>> write to it, I am trying to reset/dump stats. The do_reset_stats
>> functions though are in util directory
>> instead of src. So the default compilation script is not going to
>> support that. I have some trouble
>> calling back to these psudoinsts from the cache mode itself.
>>
>> Do you think this is the right way to go or is there is better way?
>>
>> Thanks for your help in advance.
>>
>> john
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>>
>
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