diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2004-12-30 21:28:49 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2004-12-30 21:28:49 +0000 |
| commit | 6eb290c167c4a5f9543379bf27e0960d0a22f85f (patch) | |
| tree | 9ae99b5e30cb372066da37930d84fb6740e3119a /sys/arch/mvme68k | |
| parent | f6f3723d10fe56463c5f4fd89abd59cfc174a1fb (diff) | |
If we are running on a 68040 or a 68060 processor, overwrite the copypage()
code with the faster copypage040() before the kernel text is mapped read-only.
Diffstat (limited to 'sys/arch/mvme68k')
| -rw-r--r-- | sys/arch/mvme68k/mvme68k/locore.s | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/sys/arch/mvme68k/mvme68k/locore.s b/sys/arch/mvme68k/mvme68k/locore.s index 09b3f9168df..6e41e389a2e 100644 --- a/sys/arch/mvme68k/mvme68k/locore.s +++ b/sys/arch/mvme68k/mvme68k/locore.s @@ -1,4 +1,4 @@ -/* $OpenBSD: locore.s,v 1.46 2004/12/24 22:50:30 miod Exp $ */ +/* $OpenBSD: locore.s,v 1.47 2004/12/30 21:28:48 miod Exp $ */ /* * Copyright (c) 1995 Theo de Raadt @@ -449,6 +449,23 @@ Lstart2: addql #8,sp /* + * While still running physical, override copypage() with the 68040 + * optimized version, copypage040(), if possible. + * This relies upon the fact that copypage() immediately follows + * copypage040() in memory. + */ + RELOC(mmutype, a0) + cmpl #MMU_68040,a0@ + jgt Lmmu_enable + RELOC(copypage040, a0) + RELOC(copypage, a1) + movl a1, a2 +1: + movw a0@+, a2@+ + cmpl a0, a1 + jgt 1b + +/* * Enable the MMU. * Since the kernel is mapped logical == physical, we just turn it on. */ |