I'd like to be able to set registers directly
I'd like to be able to set registers directly
- Subject: I'd like to be able to set registers directly
- From: Gordo Cath <email@hidden>
- Date: Thu, 07 Jul 2016 08:36:23 -0400
Hi,
I'd like to be able to set a register directly from my c code. I'm using the llvm compiler in a x86_64 build/run environment.
When I compile and link the following code I get no errors or warnings:
I used the thread_create_running function and during setup set the r11 register to 0xBEAD as a start state using x86_thread_state64_t .
///snippet---- at the very start of my thread I have the following tidbit of code:
register uint64_t r11 asm("r11");
r11=0xfade; // some value -- don't care about the value, just want my value set.
//end snippet
Each time I run, my code crashes in what looks to be random locations, but its always my thread. However R11 is always set to 0xBEAD.
Am I missing something or is there something else I need to do to set r11 to a new value?
Gordo
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Darwin-kernel mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden