The Old New Thing

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

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

Raymond Chen

The overly-uniform program counter register strikes again.

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

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

Raymond Chen

Let's go places.

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

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

Raymond Chen

Doing things one at a time.

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

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

Raymond Chen

It's just loads and stores.

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

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

Raymond Chen

Making small things bigger.

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

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

Raymond Chen

That barrel shifter again.

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

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

Raymond Chen

Flip-flopping the bits.

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

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

Raymond Chen

Don't let the name fool you.

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

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

Raymond Chen

Starting with basic mathematics.

The ARM processor (Thumb-2), part 4: Single-instruction constants

June 3, 2021 Jun 3, 2021 06/3/21

Raymond Chen

Flaunt your barrel shifter if you've got it.