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| author | bde <bde@FreeBSD.org> | 1995-01-14 10:44:55 +0000 |
|---|---|---|
| committer | bde <bde@FreeBSD.org> | 1995-01-14 10:44:55 +0000 |
| commit | 56e94090e52ed43d7b9477b7667a4fb4ee3c59cc (patch) | |
| tree | 31b633900b31e0d837fc06a153df2b2e25c2c9e3 /sys/amd64/include/specialreg.h | |
| parent | 4296366254e7c1e86d67eb8311da78146aa9d925 (diff) | |
| download | FreeBSD-src-56e94090e52ed43d7b9477b7667a4fb4ee3c59cc.zip FreeBSD-src-56e94090e52ed43d7b9477b7667a4fb4ee3c59cc.tar.gz | |
Enable define of CR0_AM to prepare for implementing alignment checking.
Uniformize idempotency ifdef.
Diffstat (limited to 'sys/amd64/include/specialreg.h')
| -rw-r--r-- | sys/amd64/include/specialreg.h | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/sys/amd64/include/specialreg.h b/sys/amd64/include/specialreg.h index d791060..aa87bec 100644 --- a/sys/amd64/include/specialreg.h +++ b/sys/amd64/include/specialreg.h @@ -31,16 +31,15 @@ * SUCH DAMAGE. * * from: @(#)specialreg.h 7.1 (Berkeley) 5/9/91 - * $Id: specialreg.h,v 1.4 1994/09/04 19:59:24 pst Exp $ + * $Id: specialreg.h,v 1.5 1994/09/04 23:10:27 davidg Exp $ */ #ifndef _MACHINE_SPECIALREG_H_ -#define _MACHINE_SPECIALREG_H_ 1 +#define _MACHINE_SPECIALREG_H_ /* * Bits in 386 special registers: */ - #define CR0_PE 0x00000001 /* Protected mode Enable */ #define CR0_MP 0x00000002 /* "Math" Present (NPX or NPX emulator) */ #ifdef notused @@ -55,12 +54,9 @@ /* * Bits in 486 special registers: */ - #define CR0_NE 0x00000020 /* Numeric Error enable (EX16 vs IRQ13) */ #define CR0_WP 0x00010000 /* Write Protect (honor page protect in all modes) */ -#ifdef notyet #define CR0_AM 0x00040000 /* Alignment Mask (set to enable AC flag) */ -#endif /* * Cyrix 486 DLC special registers, accessable as IO ports. @@ -114,4 +110,4 @@ #define NCR_SIZE_32M 14 #define NCR_SIZE_4G 15 -#endif /* _MACHINE_SPECIALREG_H_ */ +#endif /* !_MACHINE_SPECIALREG_H_ */ |
