diff options
Diffstat (limited to 'UefiCpuPkg/CpuDxe/CpuGdt.c')
| -rw-r--r-- | UefiCpuPkg/CpuDxe/CpuGdt.c | 83 |
1 files changed, 47 insertions, 36 deletions
diff --git a/UefiCpuPkg/CpuDxe/CpuGdt.c b/UefiCpuPkg/CpuDxe/CpuGdt.c index 35a87a6e45..9ef2fdfefb 100644 --- a/UefiCpuPkg/CpuDxe/CpuGdt.c +++ b/UefiCpuPkg/CpuDxe/CpuGdt.c @@ -2,7 +2,7 @@ C based implemention of IA32 interrupt handling only
requiring a minimal assembly interrupt entry point.
- Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -35,10 +35,10 @@ STATIC GDT_ENTRIES GdtTemplate = { // LINEAR_SEL
//
{
- 0x0FFFF, // limit 0xFFFFF
- 0x0, // base 0
- 0x0,
- 0x092, // present, ring 0, data, expand-up, writable
+ 0x0FFFF, // limit 15:0
+ 0x0, // base 15:0
+ 0x0, // base 23:16
+ 0x092, // present, ring 0, data, read/write
0x0CF, // page-granular, 32-bit
0x0,
},
@@ -46,10 +46,10 @@ STATIC GDT_ENTRIES GdtTemplate = { // LINEAR_CODE_SEL
//
{
- 0x0FFFF, // limit 0xFFFFF
- 0x0, // base 0
- 0x0,
- 0x09A, // present, ring 0, data, expand-up, writable
+ 0x0FFFF, // limit 15:0
+ 0x0, // base 15:0
+ 0x0, // base 23:16
+ 0x09F, // present, ring 0, code, execute/read, conforming, accessed
0x0CF, // page-granular, 32-bit
0x0,
},
@@ -57,10 +57,10 @@ STATIC GDT_ENTRIES GdtTemplate = { // SYS_DATA_SEL
//
{
- 0x0FFFF, // limit 0xFFFFF
- 0x0, // base 0
- 0x0,
- 0x092, // present, ring 0, data, expand-up, writable
+ 0x0FFFF, // limit 15:0
+ 0x0, // base 15:0
+ 0x0, // base 23:16
+ 0x093, // present, ring 0, data, read/write, accessed
0x0CF, // page-granular, 32-bit
0x0,
},
@@ -68,45 +68,56 @@ STATIC GDT_ENTRIES GdtTemplate = { // SYS_CODE_SEL
//
{
- 0x0FFFF, // limit 0xFFFFF
- 0x0, // base 0
- 0x0,
- 0x09A, // present, ring 0, data, expand-up, writable
+ 0x0FFFF, // limit 15:0
+ 0x0, // base 15:0
+ 0x0, // base 23:16
+ 0x09A, // present, ring 0, code, execute/read
0x0CF, // page-granular, 32-bit
0x0,
},
//
- // LINEAR_CODE64_SEL
+ // SPARE4_SEL
//
{
- 0x0FFFF, // limit 0xFFFFF
- 0x0, // base 0
- 0x0,
- 0x09B, // present, ring 0, code, expand-up, writable
- 0x0AF, // LimitHigh (CS.L=1, CS.D=0)
- 0x0, // base (high)
+ 0x0, // limit 15:0
+ 0x0, // base 15:0
+ 0x0, // base 23:16
+ 0x0, // type
+ 0x0, // limit 19:16, flags
+ 0x0, // base 31:24
},
//
- // SPARE4_SEL
+ // LINEAR_DATA64_SEL
//
{
- 0x0, // limit 0
- 0x0, // base 0
- 0x0,
- 0x0, // present, ring 0, data, expand-up, writable
- 0x0, // page-granular, 32-bit
+ 0x0FFFF, // limit 15:0
+ 0x0, // base 15:0
+ 0x0, // base 23:16
+ 0x092, // present, ring 0, data, read/write
+ 0x0CF, // page-granular, 32-bit
0x0,
},
//
+ // LINEAR_CODE64_SEL
+ //
+ {
+ 0x0FFFF, // limit 15:0
+ 0x0, // base 15:0
+ 0x0, // base 23:16
+ 0x09A, // present, ring 0, code, execute/read
+ 0x0AF, // page-granular, 64-bit code
+ 0x0, // base (high)
+ },
+ //
// SPARE5_SEL
//
{
- 0x0, // limit 0
- 0x0, // base 0
- 0x0,
- 0x0, // present, ring 0, data, expand-up, writable
- 0x0, // page-granular, 32-bit
- 0x0,
+ 0x0, // limit 15:0
+ 0x0, // base 15:0
+ 0x0, // base 23:16
+ 0x0, // type
+ 0x0, // limit 19:16, flags
+ 0x0, // base 31:24
},
};
|