diff options
| author | cinap_lenrek <cinap_lenrek@localhost> | 2011-07-12 15:46:22 +0200 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@localhost> | 2011-07-12 15:46:22 +0200 |
| commit | c6c2e04d4a700fe3982a4a72e768c69d6ace08a6 (patch) | |
| tree | d64dc55189b55da8c7d01be1c981dda6dcab76dd /sys/src/9/pc/mem.h | |
| parent | b429f72eaedff27b43c4ac951cea62f574e6fb23 (diff) | |
segdesc: add /dev/^(ldt gdt) support
Diffstat (limited to 'sys/src/9/pc/mem.h')
| -rw-r--r-- | sys/src/9/pc/mem.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/sys/src/9/pc/mem.h b/sys/src/9/pc/mem.h index 184e86c72..24b8260b3 100644 --- a/sys/src/9/pc/mem.h +++ b/sys/src/9/pc/mem.h @@ -92,8 +92,10 @@ #define APMCSEG16 7 /* APM 16-bit code segment */ #define APMDSEG 8 /* APM data segment */ #define KESEG16 9 /* kernel executable 16-bit */ -#define NGDT 10 /* number of GDT entries required */ -/* #define APM40SEG 8 /* APM segment 0x40 */ +#define LDTSEG 10 /* local descriptor table */ +#define PROCSEG0 11 /* per process descriptor0 */ +#define NPROCSEG 3 /* number of per process descriptors */ +#define NGDT 14 /* number of GDT entries required */ #define SELGDT (0<<2) /* selector is in gdt */ #define SELLDT (1<<2) /* selector is in ldt */ @@ -109,7 +111,7 @@ #define APMCSEL SELECTOR(APMCSEG, SELGDT, 0) #define APMCSEL16 SELECTOR(APMCSEG16, SELGDT, 0) #define APMDSEL SELECTOR(APMDSEG, SELGDT, 0) -/* #define APM40SEL SELECTOR(APM40SEG, SELGDT, 0) */ +#define LDTSEL SELECTOR(LDTSEG, SELGDT, 0) /* * fields in segment descriptors @@ -120,6 +122,7 @@ #define SEGCG (0x0C<<8) /* call gate */ #define SEGIG (0x0E<<8) /* interrupt gate */ #define SEGTG (0x0F<<8) /* trap gate */ +#define SEGLDT (0x02<<8) /* local descriptor table */ #define SEGTYPE (0x1F<<8) #define SEGP (1<<15) /* segment present */ |