1 /* $NetBSD: specialreg.h,v 1.3 2005/12/11 12:16:25 christos Exp $ */ 2 3 #include <x86/specialreg.h> 4 5 /* 6 * Extended Feature Enable Register of the x86-64 7 */ 8 9 #define MSR_EFER 0xc0000080 10 11 #define EFER_SCE 0x00000001 /* SYSCALL extension */ 12 #define EFER_LME 0x00000100 /* Long Mode Active */ 13 #define EFER_LMA 0x00000400 /* Long Mode Enabled */ 14 #define EFER_NXE 0x00000800 /* No-Execute Enabled */ 15 16 #define MSR_STAR 0xc0000081 /* 32 bit syscall gate addr */ 17 #define MSR_LSTAR 0xc0000082 /* 64 bit syscall gate addr */ 18 #define MSR_CSTAR 0xc0000083 /* compat syscall gate addr */ 19 #define MSR_SFMASK 0xc0000084 /* flags to clear on syscall */ 20 21 #define MSR_FSBASE 0xc0000100 /* 64bit offset for fs: */ 22 #define MSR_GSBASE 0xc0000101 /* 64bit offset for gs: */ 23 #define MSR_KERNELGSBASE 0xc0000102 /* storage for swapgs ins */ 24