Re: rep movsb vs. simpler instructions for memcpy/memmove

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Sujet : Re: rep movsb vs. simpler instructions for memcpy/memmove
De : ldo (at) *nospam* nz.invalid (Lawrence D'Oliveiro)
Groupes : comp.arch
Date : 13. Mar 2025, 03:34:11
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On Thu, 13 Mar 2025 00:49:47 +0000, MitchAlsup1 wrote:

On Thu, 13 Mar 2025 0:03:51 +0000, Lawrence D'Oliveiro wrote:
 
On Wed, 12 Mar 2025 17:44:11 +0000, MitchAlsup1 wrote:
>
My 66000 has MM memmove as an instruction (4-bytes) always optimal, no
checking required.
>
Presumably interruptible and resumable ...
 
Yep; but also include able to take exceptions.

So you have a VAX-style “first part done” processor status bit? And you
use architectural registers to save/restore the state of an instruction in
progress at the time of an interrupt?

Date Sujet#  Auteur
1 Mar 25 * Why VAX Was the Ultimate CISC and Not RISC230Lawrence D'Oliveiro
1 Mar 25 +* Re: Why VAX Was the Ultimate CISC and Not RISC220Anton Ertl
1 Mar 25 i+* Re: Why VAX Was the Ultimate CISC and Not RISC25MitchAlsup1
1 Mar 25 ii+- Re: Why VAX Was the Ultimate CISC and Not RISC1Thomas Koenig
2 Mar 25 ii`* Re: Why VAX Was the Ultimate CISC and Not RISC23Anton Ertl
2 Mar 25 ii +* Re: Why VAX Was the Ultimate CISC and Not RISC6Robert Swindells
2 Mar 25 ii i+* Re: Why VAX Was the Ultimate CISC and Not RISC4Anton Ertl
5 Mar 25 ii ii`* Re: Why VAX Was the Ultimate CISC and Not RISC3Robert Swindells
6 Mar 25 ii ii `* Re: Why VAX Was the Ultimate CISC and Not RISC2Lawrence D'Oliveiro
6 Mar 25 ii ii  `- Re: Why VAX Was the Ultimate CISC and Not RISC1MitchAlsup1
2 Mar 25 ii i`- Re: Why VAX Was the Ultimate CISC and Not RISC1Lynn Wheeler
2 Mar 25 ii +* Re: Why VAX Was the Ultimate CISC and Not RISC4MitchAlsup1
2 Mar 25 ii i`* Re: Why VAX Was the Ultimate CISC and Not RISC3Lawrence D'Oliveiro
3 Mar 25 ii i `* Re: Why VAX Was the Ultimate CISC and Not RISC2MitchAlsup1
3 Mar 25 ii i  `- Re: Why VAX Was the Ultimate CISC and Not RISC1Lawrence D'Oliveiro
2 Mar 25 ii +- Re: Why VAX Was the Ultimate CISC and Not RISC1BGB
3 Mar 25 ii `* Re: Why VAX Was the Ultimate CISC and Not RISC11Anton Ertl
3 Mar 25 ii  +* Re: Why VAX Was the Ultimate CISC and Not RISC9Thomas Koenig
3 Mar 25 ii  i`* Re: Why VAX Was the Ultimate CISC and Not RISC8Anton Ertl
5 Mar 25 ii  i `* Re: Why VAX Was the Ultimate CISC and Not RISC7Thomas Koenig
6 Mar 25 ii  i  `* Re: Why VAX Was the Ultimate CISC and Not RISC6Thomas Koenig
8 Mar 25 ii  i   `* Re: Why VAX Was the Ultimate CISC and Not RISC5Anton Ertl
8 Mar 25 ii  i    +- Re: Why VAX Was the Ultimate CISC and Not RISC1MitchAlsup1
9 Mar 25 ii  i    `* Re: Why VAX Was the Ultimate CISC and Not RISC3Torbjorn Lindgren
9 Mar 25 ii  i     `* Re: Why VAX Was the Ultimate CISC and Not RISC2MitchAlsup1
9 Mar 25 ii  i      `- Re: Why VAX Was the Ultimate CISC and Not RISC1Thomas Koenig
4 Mar 25 ii  `- Re: Why VAX Was the Ultimate CISC and Not RISC1Anton Ertl
1 Mar 25 i+* Re: Why VAX Was the Ultimate CISC and Not RISC2Anton Ertl
2 Mar 25 ii`- Re: Why VAX Was the Ultimate CISC and Not RISC1Keith Thompson
1 Mar 25 i+* Re: Why VAX Was the Ultimate CISC and Not RISC160John Levine
1 Mar 25 ii`* Re: Why VAX Was the Ultimate CISC and Not RISC159Anton Ertl
2 Mar 25 ii +* Re: Why VAX Was the Ultimate CISC and Not RISC6Lawrence D'Oliveiro
2 Mar 25 ii i`* Re: Why VAX Was the Ultimate CISC and Not RISC5Anton Ertl
2 Mar 25 ii i +* Re: Why VAX Was the Ultimate CISC and Not RISC3Lawrence D'Oliveiro
3 Mar 25 ii i i`* Re: Why VAX Was the Ultimate CISC and Not RISC2Anton Ertl
4 Mar 25 ii i i `- Re: Why VAX Was the Ultimate CISC and Not RISC1Lawrence D'Oliveiro
2 Mar 25 ii i `- Re: Why VAX Was the Ultimate CISC and Not RISC1MitchAlsup1
2 Mar 25 ii +- Re: Why VAX Was the Ultimate CISC and Not RISC1Lynn Wheeler
2 Mar 25 ii `* Re: Why VAX Was the Ultimate CISC and Not RISC151John Levine
2 Mar 25 ii  +- Re: Why VAX Was the Ultimate CISC and Not RISC1Lawrence D'Oliveiro
2 Mar 25 ii  `* Re: Why VAX Was the Ultimate CISC and Not RISC149Anton Ertl
3 Mar 25 ii   +* Re: Why VAX Was the Ultimate CISC and Not RISC6John Levine
3 Mar 25 ii   i+- Re: Why VAX Was the Ultimate CISC and Not RISC1Lawrence D'Oliveiro
3 Mar 25 ii   i`* Re: Why VAX Was the Ultimate CISC and Not RISC4Anton Ertl
3 Mar 25 ii   i +* Re: Why VAX Was the Ultimate CISC and Not RISC2Michael S
3 Mar 25 ii   i i`- Re: Why VAX Was the Ultimate CISC and Not RISC1Anton Ertl
4 Mar 25 ii   i `- Re: Why VAX Was the Ultimate CISC and Not RISC1Lawrence D'Oliveiro
3 Mar 25 ii   +* Re: Why VAX Was the Ultimate CISC and Not RISC3Thomas Koenig
3 Mar 25 ii   i`* Re: Why VAX Was the Ultimate CISC and Not RISC2Anton Ertl
3 Mar 25 ii   i `- Re: Why VAX Was the Ultimate CISC and Not RISC1BGB
3 Mar 25 ii   `* Re: Why VAX Was the Ultimate CISC and Not RISC139MarkC
3 Mar 25 ii    `* Re: Why VAX Was the Ultimate CISC and Not RISC138Anton Ertl
3 Mar 25 ii     +* Re: Why VAX Was the Ultimate CISC and Not RISC135Thomas Koenig
4 Mar 25 ii     i`* Re: Why VAX Was the Ultimate CISC and Not RISC134Lawrence D'Oliveiro
4 Mar 25 ii     i +- Re: Why VAX Was the Ultimate CISC and Not RISC1BGB
4 Mar 25 ii     i `* Re: Why VAX Was the Ultimate CISC and Not RISC132Anton Ertl
5 Mar 25 ii     i  `* Re: Why VAX Was the Ultimate CISC and Not RISC131Lawrence D'Oliveiro
5 Mar 25 ii     i   `* Re: Why VAX Was the Ultimate CISC and Not RISC130Anton Ertl
6 Mar 25 ii     i    +* Re: Why VAX Was the Ultimate CISC and Not RISC3John Levine
7 Mar 25 ii     i    i`* Re: Why VAX Was the Ultimate CISC and Not RISC2Lynn Wheeler
8 Mar 25 ii     i    i `- Re: Why VAX Was the Ultimate CISC and Not RISC1Thomas Koenig
7 Mar 25 ii     i    `* Re: Why VAX Was the Ultimate CISC and Not RISC126Waldek Hebisch
7 Mar 25 ii     i     +* Re: Why VAX Was the Ultimate CISC and Not RISC123Lawrence D'Oliveiro
7 Mar 25 ii     i     i+* Re: Why VAX Was the Ultimate CISC and Not RISC66BGB
7 Mar 25 ii     i     ii+* Re: Why VAX Was the Ultimate CISC and Not RISC61MitchAlsup1
7 Mar 25 ii     i     iii+* Re: Why VAX Was the Ultimate CISC and Not RISC2Robert Finch
7 Mar 25 ii     i     iiii`- Re: Why VAX Was the Ultimate CISC and Not RISC1MitchAlsup1
7 Mar 25 ii     i     iii+* Re: Why VAX Was the Ultimate CISC and Not RISC55BGB
7 Mar 25 ii     i     iiii+- Re: Why VAX Was the Ultimate CISC and Not RISC1MitchAlsup1
8 Mar 25 ii     i     iiii`* Re: Why VAX Was the Ultimate CISC and Not RISC53Robert Finch
8 Mar 25 ii     i     iiii `* Re: Why VAX Was the Ultimate CISC and Not RISC52BGB
8 Mar 25 ii     i     iiii  `* Re: Why VAX Was the Ultimate CISC and Not RISC51MitchAlsup1
9 Mar 25 ii     i     iiii   +- Re: Why VAX Was the Ultimate CISC and Not RISC1Lawrence D'Oliveiro
10 Mar 25 ii     i     iiii   `* Re: Why VAX Was the Ultimate CISC and Not RISC49BGB
11 Mar 25 ii     i     iiii    +* Re: Why VAX Was the Ultimate CISC and Not RISC2Lawrence D'Oliveiro
11 Mar 25 ii     i     iiii    i`- Re: Why VAX Was the Ultimate CISC and Not RISC1BGB
11 Mar 25 ii     i     iiii    `* Re: Why VAX Was the Ultimate CISC and Not RISC46MitchAlsup1
11 Mar 25 ii     i     iiii     +* Re: Why VAX Was the Ultimate CISC and Not RISC40Robert Finch
11 Mar 25 ii     i     iiii     i+* Re: Why VAX Was the Ultimate CISC and Not RISC7BGB
11 Mar 25 ii     i     iiii     ii`* Re: Why VAX Was the Ultimate CISC and Not RISC6MitchAlsup1
11 Mar 25 ii     i     iiii     ii `* Re: Why VAX Was the Ultimate CISC and Not RISC5Terje Mathisen
11 Mar 25 ii     i     iiii     ii  +- Re: Why VAX Was the Ultimate CISC and Not RISC1David Schultz
11 Mar 25 ii     i     iiii     ii  `* Re: Why VAX Was the Ultimate CISC and Not RISC3Lawrence D'Oliveiro
12 Mar 25 ii     i     iiii     ii   `* Re: Why VAX Was the Ultimate CISC and Not RISC2Anton Ertl
12 Mar 25 ii     i     iiii     ii    `- Re: Why VAX Was the Ultimate CISC and Not RISC1Lawrence D'Oliveiro
11 Mar 25 ii     i     iiii     i`* Re: Why VAX Was the Ultimate CISC and Not RISC32MitchAlsup1
11 Mar 25 ii     i     iiii     i `* Re: Why VAX Was the Ultimate CISC and Not RISC31Stephen Fuld
11 Mar 25 ii     i     iiii     i  +* Re: Why VAX Was the Ultimate CISC and Not RISC6MitchAlsup1
11 Mar 25 ii     i     iiii     i  i+* Re: Why VAX Was the Ultimate CISC and Not RISC4Stephen Fuld
11 Mar 25 ii     i     iiii     i  ii`* Re: Why VAX Was the Ultimate CISC and Not RISC3Lawrence D'Oliveiro
12 Mar 25 ii     i     iiii     i  ii `* Re: Why VAX Was the Ultimate CISC and Not RISC2BGB
12 Mar 25 ii     i     iiii     i  ii  `- Re: Why VAX Was the Ultimate CISC and Not RISC1Lawrence D'Oliveiro
12 Mar 25 ii     i     iiii     i  i`- Re: Why VAX Was the Ultimate CISC and Not RISC1BGB
11 Mar 25 ii     i     iiii     i  +* Re: Why VAX Was the Ultimate CISC and Not RISC15moi
11 Mar 25 ii     i     iiii     i  i+* Re: Why VAX Was the Ultimate CISC and Not RISC12Stephen Fuld
11 Mar 25 ii     i     iiii     i  ii+* Re: Why VAX Was the Ultimate CISC and Not RISC10Lawrence D'Oliveiro
12 Mar 25 ii     i     iiii     i  iii+* Re: Why VAX Was the Ultimate CISC and Not RISC6BGB
12 Mar 25 ii     i     iiii     i  iiii+* Re: Why VAX Was the Ultimate CISC and Not RISC2Lawrence D'Oliveiro
12 Mar 25 ii     i     iiii     i  iiiii`- Re: Why VAX Was the Ultimate CISC and Not RISC1Stephen Fuld
12 Mar 25 ii     i     iiii     i  iiii`* Re: Why VAX Was the Ultimate CISC and Not RISC3MitchAlsup1
12 Mar 25 ii     i     iiii     i  iiii `* Re: Why VAX Was the Ultimate CISC and Not RISC2BGB
12 Mar 25 ii     i     iiii     i  iii+- Re: Why VAX Was the Ultimate CISC and Not RISC1MitchAlsup1
12 Mar 25 ii     i     iiii     i  iii`* Re: Why VAX Was the Ultimate CISC and Not RISC2Anton Ertl
12 Mar 25 ii     i     iiii     i  ii`- Re: Why VAX Was the Ultimate CISC and Not RISC1moi
12 Mar 25 ii     i     iiii     i  i`* Re: Why VAX Was the Ultimate CISC and Not RISC2MitchAlsup1
11 Mar 25 ii     i     iiii     i  +* Re: Why VAX Was the Ultimate CISC and Not RISC2Lawrence D'Oliveiro
12 Mar 25 ii     i     iiii     i  +* Re: Why VAX Was the Ultimate CISC and Not RISC4John Levine
12 Mar 25 ii     i     iiii     i  `* Re: Why VAX Was the Ultimate CISC and Not RISC3Anton Ertl
11 Mar 25 ii     i     iiii     `* Re: Why VAX Was the Ultimate CISC and Not RISC5BGB
7 Mar 25 ii     i     iii+* Re: Why VAX Was the Ultimate CISC and Not RISC2MitchAlsup1
8 Mar 25 ii     i     iii`- Re: Why VAX Was the Ultimate CISC and Not RISC1BGB
7 Mar 25 ii     i     ii`* Re: Why VAX Was the Ultimate CISC and Not RISC4Robert Finch
7 Mar 25 ii     i     i+* Re: Why VAX Was the Ultimate CISC and Not RISC4MitchAlsup1
7 Mar 25 ii     i     i+- Re: Why VAX Was the Ultimate CISC and Not RISC1MitchAlsup1
11 Mar 25 ii     i     i`* Re: Why VAX Was the Ultimate CISC and Not RISC51Waldek Hebisch
7 Mar 25 ii     i     `* Re: Why VAX Was the Ultimate CISC and Not RISC2Michael S
3 Mar 25 ii     `* Re: Why VAX Was the Ultimate CISC and Not RISC2Robert Swindells
1 Mar 25 i+* Re: Why VAX Was the Ultimate CISC and Not RISC28BGB
2 Mar 25 i+* Re: Why VAX Was the Ultimate CISC and Not RISC2Lawrence D'Oliveiro
5 Mar 25 i`* Re: Why VAX Was the Ultimate CISC and Not RISC2Stefan Monnier
1 Mar 25 +- Re: Why VAX Was the Ultimate CISC and Not RISC1MitchAlsup1
2 Mar 25 +* Re: Why VAX Was the Ultimate CISC and Not RISC5Lawrence D'Oliveiro
2 Mar 25 +- Re: Why VAX Was the Ultimate CISC and Not RISC1MitchAlsup1
5 Mar 25 `* Re: Why VAX Was the Ultimate CISC and Not RISC2Theo

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