What does m5_enableDebugFlag(); do? Just emit a 32-bit instruction? Where to?
For the builtin simulator, on an intel machine simply build the arm target: make arm.release. When the build system detect the mismatch between the host tool ISA and the target ISA it automatically build the simulator. On 26 February 2015 at 20:04, Malek Musleh <[email protected]> wrote: > Hi Rudolph, > > Yes, I have been able to run a clean version of v8 on this other ARM > simulator (gem5). I added support to the gem5 simulator to handle this > unused opcode. > > I think it might be your second suggestion. In one of my > instrumentations, I inserted the function after a __Push(), where in > other places I placed it at the top of the function body. > > Inside KeyedStoreIC and StoreIC::Generate Miss() > > void KeyedStoreIC::GenerateMiss(MacroAssembler* masm) { > // Push receiver, key and value for runtime call. > __ Push(StoreDescriptor::ReceiverRegister(), > StoreDescriptor::NameRegister(), > StoreDescriptor::ValueRegister()); > > // start pipeline viewer tracing > m5_enableDebugFlag(); > > ExternalReference ref = > ExternalReference(IC_Utility(kKeyedStoreIC_Miss), masm->isolate()); > __ TailCallExternalReference(ref, 3, 1); > > > Would placing it after the __Push() cause some corruption on the stack? > > Separately, I could not find documentation on how to use/run the > built-in arm simulator of v8. Can you provide an example? > > > On Thu, Feb 26, 2015 at 2:46 PM, Rodolph Perfetta > <[email protected]> wrote: > > If I understood correctly you are using a modified arm simulator (not > the V8 > > built-in one) to run V8, and this simulator returns "illegal > instruction". > > V8 does not trap illegal instructions so the options I can think of: > > * your ARM simulator does not support ARMv7 with VFP, which is a > > requirement for V8 > > * your modification to V8 are corrupting code generation and the pc end > up > > in some data. > > Did you try running the test on a clean version of V8? > > > > Rodolph. > > > > On 26 February 2015 at 16:17, Malek Musleh <[email protected]> > wrote: > >> > >> Hi, > >> > >> I've instrumented parts of the v8 source code to call a function from an > >> external library, and have been able to get it compiled successfully, > but am > >> running into issues at runtime. Specifically, I am running v8 inside an > arm > >> simulator, and the instrumentation calls I added are recognized by the > arm > >> simulator (i extend ununsed opcode for functionality). However, at > runtime I > >> get the v8 error printed to my simulated terminal. > >> > >> /tmp/script: line 13: 3207 Illegal instruction > >> /system/v8/arm.release/shell run-deltablue.js > >> > >> > >> I suspect that because the instrumented call is getting compiled down to > >> the unused opcode, v8 doesn't recognize it and traps. I've grepped > through > >> the source code, but couldn't find where it traps based on an illegal > >> instruction. When encountering this specific opcode of my instrumented > >> calls, I want to simply return and not exit out of the run. > >> > >> > >> Thanks, > >> > >> Malek > >> > >> -- > >> -- > >> v8-users mailing list > >> [email protected] > >> http://groups.google.com/group/v8-users > >> --- > >> You received this message because you are subscribed to the Google > Groups > >> "v8-users" group. > >> To unsubscribe from this group and stop receiving emails from it, send > an > >> email to [email protected]. > >> For more options, visit https://groups.google.com/d/optout. > > > > > > -- > > -- > > v8-users mailing list > > [email protected] > > http://groups.google.com/group/v8-users > > --- > > You received this message because you are subscribed to a topic in the > > Google Groups "v8-users" group. > > To unsubscribe from this topic, visit > > https://groups.google.com/d/topic/v8-users/yIwVNMf060A/unsubscribe. > > To unsubscribe from this group and all its topics, send an email to > > [email protected]. > > For more options, visit https://groups.google.com/d/optout. > > -- > -- > v8-users mailing list > [email protected] > http://groups.google.com/group/v8-users > --- > You received this message because you are subscribed to the Google Groups > "v8-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- -- v8-users mailing list [email protected] http://groups.google.com/group/v8-users --- You received this message because you are subscribed to the Google Groups "v8-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
