• Cortex-A7 instruction lists
    Just in case someone needs them, I made ARM and Thumb mode lists of Cortex-A7 instructions (because I didn't find them in the net). They are generated from ARMv7-A/R ARM with a simple AWK-script and then...
  • ARM vs Thumb vs Thumb2 instruction set
    Hi , I have Asked a near question few days ago but I am still confused about the following : I know that there is ARM Instruction set which is all 32-bit wide Encoding but for thumb and thumb-2...
  • How to access the memory mapped debug registers?
    Now that the funny PABT-behaviour is found to be (probably) caused ny debug state, I'd like to exit debug state before return from PABT exception. The ARM v7-A/R ARM says that I should write RRQ to DBGDRCR...
  • LDR Instruction
    Note: This was originally posted on 5th November 2008 at http://forums.arm.com Hi all,         I am new to the thumb-2 instruction set. In one of my sample code I noticed a instruction          LDR r0...
  • WFI Instruction
    Hi, I want to use the wfi instruction in my code. I'm sending a command to a module and wait for the reply. I have configured UART communication with the module. Will it be good to use wfi() instruction...