Changeset 22c3444 in mainline for kernel/arch/amd64/src/asm.S


Ignore:
Timestamp:
2010-07-06T23:27:57Z (14 years ago)
Author:
Martin Decky <martin@…>
Branches:
lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
Children:
09b859c, 62b20f1
Parents:
97bdb4a
Message:

improve early printout scrolling speed

File:
1 edited

Legend:

Unmodified
Added
Removed

  • kernel/arch/amd64/src/asm.S

    r97bdb4a r22c3444  
    445445                movq $(PA2KA(0xb80a0)), %rsi
    446446                movq $(PA2KA(0xb8000)), %rdi
    447                 movq $1920, %rcx
    448                 rep movsw
     447                movq $480, %rcx
     448                rep movsq
    449449               
    450450                /* Clear the 24th row */
    451451                xorq %rax, %rax
    452                 movq $80, %rcx
    453                 rep stosw
     452                movq $20, %rcx
     453                rep stosq
    454454               
    455455                /* Go to row 24 */
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