• Is Thumb to ARM mode overhead
    Hi all, Consider high priority routines are executing in ARM mode and low priority in Thumb mode. There could be constant switching between ARM and THUMB mode. In this inter-working model is there any...
  • [ELF/Thumb] Is it possible to create library procedures in Thumb-mode only ?
    Greetings, In my journey to learn ARM assembly using Android (Linux) systems, I'm currently playing with Thumb mode. I'm currently testing if it is possible to write (ELF) library procedures entirely...
  • Difference between thumb machine directives
    Hi Experts, What is the key difference between the following directives .thumb .thumb_func .force_thumb .thumb_set What is the exact use case where the above things can to be applied ? Regards, Techguyz...
  • Condition Codes 3: Conditional Execution in Thumb-2
    This post is part of a series: Condition Codes 1: Condition Flags and Codes Condition Codes 2: Conditional Execution Condition Codes 3: Conditional Execution in Thumb-2 Condition Codes 4: Floating...
  • Question about a code snippet on ARM, Thumb state change
    Hi, I find the following code snippet online on ARM state change. Although that whole material looks solid, the second line in the blue code below is puzzling. add R1,PC,#1 ;Load address of SUB_BRANCH...