The Old New Thing

The SuperH-3, part 13: Misaligned data, and converting between signed vs unsigned values

Raymond ChenAugust 21, 2019Aug 21, 201908/21/19

Okay, now we're doing some programming.

The SuperH-3, part 12: Calling convention and function prologues/epilogues

Raymond ChenAugust 20, 2019Aug 20, 201908/20/19

A typical RISC pattern.

The SuperH-3, part 11: Atomic operations

Raymond ChenAugust 19, 2019Aug 19, 201908/19/19

How do you create an atomic operation when the processor doesn't support them?

The SuperH-3, part 10: Control transfer

Raymond ChenAugust 16, 2019Aug 16, 201908/16/19

The return of the branch delay slot.

Why is there a huge spike in cruise ship width at 32 meters?

Raymond ChenAugust 15, 2019Aug 15, 201908/15/19

Squeezing through tight spaces.

The SuperH-3, part 9: Constants

Raymond ChenAugust 15, 2019Aug 15, 201908/15/19

Squeezing constants into a tiny instruction.

The SuperH-3, part 8: Bit shifting

Raymond ChenAugust 14, 2019Aug 14, 201908/14/19

Sliding left and right.

The SuperH-3, part 7: Bitwise logical operations

Raymond ChenAugust 13, 2019Aug 13, 201908/13/19

Just the basic operations, not much fancy.

The SuperH-3, part 6: Division

Raymond ChenAugust 12, 2019Aug 12, 201908/12/19

And you thought multiplication was complicated.

The SuperH-3, part 5: Multiplication

Raymond ChenAugust 9, 2019Aug 9, 201908/9/19

Now things get more complicated.