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author | Avi Kivity <avi@qumranet.com> | 2006-12-07 02:14:04 +0100 |
---|---|---|
committer | Andi Kleen <andi@basil.nowhere.org> | 2006-12-07 02:14:04 +0100 |
commit | 249e83fe839a13b5dc94285daeeaf70f6e54d930 (patch) | |
tree | 3bd37f33160916b6eef50624b795748737e2f03d /include/asm-x86_64/desc.h | |
parent | 4c7aa6c3b25ef96bc1b723238041195e3d8bf047 (diff) | |
download | kernel_samsung_smdk4412-249e83fe839a13b5dc94285daeeaf70f6e54d930.zip kernel_samsung_smdk4412-249e83fe839a13b5dc94285daeeaf70f6e54d930.tar.gz kernel_samsung_smdk4412-249e83fe839a13b5dc94285daeeaf70f6e54d930.tar.bz2 |
[PATCH] x86-64: Extract segment descriptor definitions for use outside
Code that wants to use struct desc_struct cannot do so on i386 because
desc.h contains other code that will only compile on x86_64.
So extract the structure definitions into a asm-x86_64/desc_defs.h.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Andi Kleen <ak@suse.de>
include/asm-x86_64/desc.h | 53 -------------------------------
include/asm-x86_64/desc_defs.h | 69 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 70 insertions(+), 52 deletions(-)
Diffstat (limited to 'include/asm-x86_64/desc.h')
-rw-r--r-- | include/asm-x86_64/desc.h | 53 |
1 files changed, 1 insertions, 52 deletions
diff --git a/include/asm-x86_64/desc.h b/include/asm-x86_64/desc.h index eb7723a..913d6ac 100644 --- a/include/asm-x86_64/desc.h +++ b/include/asm-x86_64/desc.h @@ -9,64 +9,13 @@ #include <linux/string.h> #include <linux/smp.h> +#include <asm/desc_defs.h> #include <asm/segment.h> #include <asm/mmu.h> -// 8 byte segment descriptor -struct desc_struct { - u16 limit0; - u16 base0; - unsigned base1 : 8, type : 4, s : 1, dpl : 2, p : 1; - unsigned limit : 4, avl : 1, l : 1, d : 1, g : 1, base2 : 8; -} __attribute__((packed)); - -struct n_desc_struct { - unsigned int a,b; -}; - extern struct desc_struct cpu_gdt_table[GDT_ENTRIES]; -enum { - GATE_INTERRUPT = 0xE, - GATE_TRAP = 0xF, - GATE_CALL = 0xC, -}; - -// 16byte gate -struct gate_struct { - u16 offset_low; - u16 segment; - unsigned ist : 3, zero0 : 5, type : 5, dpl : 2, p : 1; - u16 offset_middle; - u32 offset_high; - u32 zero1; -} __attribute__((packed)); - -#define PTR_LOW(x) ((unsigned long)(x) & 0xFFFF) -#define PTR_MIDDLE(x) (((unsigned long)(x) >> 16) & 0xFFFF) -#define PTR_HIGH(x) ((unsigned long)(x) >> 32) - -enum { - DESC_TSS = 0x9, - DESC_LDT = 0x2, -}; - -// LDT or TSS descriptor in the GDT. 16 bytes. -struct ldttss_desc { - u16 limit0; - u16 base0; - unsigned base1 : 8, type : 5, dpl : 2, p : 1; - unsigned limit1 : 4, zero0 : 3, g : 1, base2 : 8; - u32 base3; - u32 zero1; -} __attribute__((packed)); - -struct desc_ptr { - unsigned short size; - unsigned long address; -} __attribute__((packed)) ; - #define load_TR_desc() asm volatile("ltr %w0"::"r" (GDT_ENTRY_TSS*8)) #define load_LDT_desc() asm volatile("lldt %w0"::"r" (GDT_ENTRY_LDT*8)) #define clear_LDT() asm volatile("lldt %w0"::"r" (0)) |