I am a beginner of computer architecture. I try to learn Y86 architecture. I got this reference for the Y86 architecture. I did not understand the picture Stage computation: Arith/log. ops. I have ...

Being a beginner and self-learner, I am learning assembly and currently reading the chapter 3 of the book, The C Companion by Allen Hollub. I can't understand the description of Program Counter or...

In the first book I read about C++, it went a little bit into the details of how code is actually executed on a machine (it mentioned the program counter, the call stack, return addresses, and such...

Can the program counter on Intel CPUs can be read directly (that is without 'tricks') in kernel mode or some other mode?

I'm reading the book The RISC-V Reader: An Open Architecture Atlas. The authors, to explain the isolation of an ISA (Instruction Set Architecture) from a particular implementation (i.e., microarchi...

As we always know the procedure of executing task by a microprocessor is just executing binary instructions from memory one by one and there is a program counter which holds the address of the next...

The Wikipedia article about x86 assembly says that "the IP register cannot be accessed by the programmer directly." Directly means with instructions like mov and add, the same way we can ...

Is there any basic difference between instruction pointer and program counter? I believe they both refer to the same thing, the eip/rip register, although with the research i have done so far it is...

I'd like to do backtrace on MIPS. Then, I face one problem: how do I get the current PC register value, since it doesn't belong to 32 normal registers.. Thanks for your suggestion..

I'm trying to track the value of the PC of a particular process within the kernel. To do this, I looked at the kernel source and figured out that the pc is being stored inside task_struct->stack...

I want to take a piece of code, copy it into a global array and execute it from there. In other words, I am trying to to copy a bunch of instructions from the code-section into the data-section, a...

I'm having trouble understanding how the instruction jal works in the MIPS processor. My two questions are: a) What is the value stored in R31 after "jal": PC+4 or PC+8? b) If it's really PC+8, wha...

I have an embedded project using a STM32F103 (ARM Cortex M3), it is getting a occasionally getting hard fault in release mode. As part of recovery, I would like to retrieve the PC value from before...

Program counter holds the address of the instruction that should be executed next, while instruction register holds the actual instruction to be executed. wouldn't one of them be enough? And what...

While reading about Program counter i came to know to that The Program Counter is special in that there is no way to directly modify its value. Is there any indirect way to access/modify the conte...

In Visual Studio, when you're debugging with breakpoints you can change which line of code will be next to execute by dragging the execution cursor to another line; this lets you skip IF statements...

I was looking at the assembler output of my code and need help with below instructions. 0x00000fe8: e28fc000 .... ADR r12,{pc}+8 ; 0xff0 0x00000fec: e28cca08 .... ADD r12,r12,#8, 20 ; #0x8000 F...