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Shuffle order of selectors around to appease syscall/sysret (bah).

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This commit is contained in:
fvdl 2002-05-28 23:07:35 +00:00
parent 92f44882b8
commit cfe60d7a95
1 changed files with 8 additions and 11 deletions
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19
sys/arch/x86_64/include/segments.h
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@ -1,4 +1,4 @@
/* $NetBSD: segments.h,v 1.2 2002/01/03 04:28:31 thorpej Exp $ */
/* $NetBSD: segments.h,v 1.3 2002/05/28 23:07:35 fvdl Exp $ */
/*-
* Copyright (c) 1995, 1997
@ -278,21 +278,18 @@ void set_mem_segment __P((struct mem_segment_descriptor *, void *, size_t,
/*
* Byte offsets in the Local Descriptor Table (LDT)
* Strange order because of syscall/sysret insns
*/
#define LSYS5CALLS_SEL 0 /* iBCS system call gate */
#if 0
/* Sorry, no room. Luckily, it's not needed. */
#define LSYS5SIGR_SEL 1 /* iBCS sigreturn gate */
#endif
#define LUCODE_SEL 16 /* User code descriptor */
#define LUDATA_SEL 24 /* User data descriptor */
#define LUCODE32_SEL 8 /* 32 bit user code descriptor */
#define LUDATA_SEL 16 /* User data descriptor */
#define LUCODE_SEL 24 /* User code descriptor */
#define LSOL26CALLS_SEL 32 /* Solaris 2.6 system call gate */
#define LUCODE32_SEL 48 /* 32 bit user code descriptor */
#define LUDATA32_SEL 56 /* 32 bit user data descriptor */
#define LUDATA32_SEL 56 /* 32 bit user data descriptor (needed?)*/
#define LBSDICALLS_SEL 128 /* BSDI system call gate */
#define LDT_SIZE 144
#define LSYSRETBASE_SEL LUCODE32_SEL
#endif /* _X86_64_SEGMENTS_H_ */