diff options
| author | Bruce Evans <bde@FreeBSD.org> | 1994-11-14 14:18:15 +0000 |
|---|---|---|
| committer | Bruce Evans <bde@FreeBSD.org> | 1994-11-14 14:18:15 +0000 |
| commit | 040f100044d1d4abd4fa57e8ff015421162a38e5 (patch) | |
| tree | d61d5c28e7718c5c6f2e5ee1be65abbff251db9a /sys/i386/include/segments.h | |
| parent | e00dc329937f684b186f6c28eb1cc1ac45bbb962 (diff) | |
Notes
Diffstat (limited to 'sys/i386/include/segments.h')
| -rw-r--r-- | sys/i386/include/segments.h | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/sys/i386/include/segments.h b/sys/i386/include/segments.h index 0e996e65f31a..356880f0fccb 100644 --- a/sys/i386/include/segments.h +++ b/sys/i386/include/segments.h @@ -35,7 +35,7 @@ * SUCH DAMAGE. * * from: @(#)segments.h 7.1 (Berkeley) 5/9/91 - * $Id: segments.h,v 1.4 1994/01/31 10:27:13 davidg Exp $ + * $Id: segments.h,v 1.5 1994/10/01 02:56:08 davidg Exp $ */ #ifndef _MACHINE_SEGMENTS_H_ @@ -172,9 +172,6 @@ struct soft_segment_descriptor { unsigned ssd_gran:1 ; /* limit granularity (byte/page units)*/ }; -extern ssdtosd() ; /* to decode a ssd */ -extern sdtossd() ; /* to encode a sd */ - /* * region descriptors, used to load gdt/idt tables before segments yet exist. */ @@ -197,7 +194,7 @@ struct region_descriptor { * Size of IDT table */ -#define NIDT 256 +#define NIDT 48 /* 32 reserved, 16 h/w, 0 s/w */ #define NRSVIDT 32 /* reserved entries for cpu exceptions */ /* @@ -215,7 +212,11 @@ struct region_descriptor { #define GAPMCODE16_SEL 9 /* APM BIOS 32-bit interface (16bit Code) */ #define GAPMDATA_SEL 10 /* APM BIOS 32-bit interface (Data) */ -#define NGDT (GAPMDATA_SEL+1) +#ifdef BDE_DEBUGGER +#define NGDT 18 /* some of 11-17 are reserved for debugger */ +#else +#define NGDT (GAPMDATA_SEL + 1) +#endif /* * Entries in the Local Descriptor Table (LDT) @@ -227,13 +228,19 @@ struct region_descriptor { #define LUDATA_SEL 4 /* seperate stack, es,fs,gs sels ? */ /* #define LPOSIXCALLS_SEL 5*/ /* notyet */ -#define NLDT LUDATA_SEL+1 +#define NLDT (LUDATA_SEL + 1) #ifdef KERNEL -extern int currentldt; extern union descriptor gdt[NGDT]; -extern union descriptor ldt[NLDT]; -extern struct soft_segment_descriptor gdt_segs[]; -#endif - -#endif /* _MACHINE_SEGMENTS_H_ */ +extern struct gate_descriptor idt[NIDT]; + +void lgdt __P((struct region_descriptor *rdp)); +void lidt __P((struct region_descriptor *rdp)); +void lldt __P((u_short sel)); +void sdtossd __P((struct segment_descriptor *sdp, + struct soft_segment_descriptor *ssdp)); +void ssdtosd __P((struct soft_segment_descriptor *ssdp, + struct segment_descriptor *sdp)); +#endif /* KERNEL */ + +#endif /* !_MACHINE_SEGMENTS_H_ */ |