The Old New Thing

The ARM processor (Thumb-2), part 14: Manipulating flags

Raymond Chen June 17, 2021 Jun 17, 2021 06/17/21

Reaching in and flipping the switches.

The ARM processor (Thumb-2), part 13: Trampolines

Raymond Chen June 16, 2021 Jun 16, 2021 06/16/21

The overly-uniform program counter register strikes again.

The ARM processor (Thumb-2), part 12: Control transfer

Raymond Chen June 15, 2021 Jun 15, 2021 06/15/21

Let's go places.

The ARM processor (Thumb-2), part 11: Atomic access and barriers

Raymond Chen June 14, 2021 Jun 14, 2021 06/14/21

Doing things one at a time.

The ARM processor (Thumb-2), part 10: Memory access and alignment

Raymond Chen June 11, 2021 Jun 11, 2021 06/11/21

It's just loads and stores.

The ARM processor (Thumb-2), part 9: Sign and zero extension

Raymond Chen June 10, 2021 Jun 10, 2021 06/10/21

Making small things bigger.

The ARM processor (Thumb-2), part 8: Bit shifting and bitfield access

Raymond Chen June 9, 2021 Jun 9, 2021 06/9/21

That barrel shifter again.

The ARM processor (Thumb-2), part 7: Bitwise operations

Raymond Chen June 8, 2021 Jun 8, 2021 06/8/21

Flip-flopping the bits.

The ARM processor (Thumb-2), part 6: The lie hiding inside the CMN instruction

Raymond Chen June 7, 2021 Jun 7, 2021 06/7/21

Don't let the name fool you.

The ARM processor (Thumb-2), part 5: Arithmetic

Raymond Chen June 4, 2021 Jun 4, 2021 06/4/21

Starting with basic mathematics.