Rockbox mail archive

• Next message: Magnus Holmgren: "Re: More efficient bitswap.s"
• Previous message: Henri DAVID: "Play list skips"
• Maybe in reply to: Ray Ransom: "More efficient bitswap.s"
• Next in thread: Ray Ransom: "Re: More efficient bitswap.s"
• Reply: Ray Ransom: "Re: More efficient bitswap.s"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]

Ray Ransom wrote:

> Here is a more efficient version of bitswap.s. It has one less instruction
> in the all-important loop, fewer instructions in the initial test and uses
> fewer registers. If any cares, it's attached.

The last byte swap isn't correct:

        mov.b @r4,r1
        extu.b r0,r1
        mov.b @(r0,r1),r1
        mov.b r1,@r4

Should be "extu.b r1,r1" (as in the first byte swap).

  Magnus

• APPLICATION/OCTET-STREAM attachment: bitswap.s

• Next message: Magnus Holmgren: "Re: More efficient bitswap.s"
• Previous message: Henri DAVID: "Play list skips"
• Maybe in reply to: Ray Ransom: "More efficient bitswap.s"
• Next in thread: Ray Ransom: "Re: More efficient bitswap.s"
• Reply: Ray Ransom: "Re: More efficient bitswap.s"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]