diff options
| author | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-08-22 08:56:50 +0000 |
|---|---|---|
| committer | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-08-22 08:56:50 +0000 |
| commit | abef469fc1969f1142bf8add4275d573b4793e94 (patch) | |
| tree | c09371f26bb301961ca3c752640fdf5053f2bc73 /UefiCpuPkg/Universal/Acpi/S3Resume2Pei/Ia32 | |
| parent | 8d4e1bd933f22a5e9223dc9923367f6f49b03b00 (diff) | |
| download | edk2-platforms-abef469fc1969f1142bf8add4275d573b4793e94.tar.xz | |
Set correct DS/ES/FS/GS/SS segment selectors after GDT loaded.
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Rui Sun <rui.sun@intel.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13667 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'UefiCpuPkg/Universal/Acpi/S3Resume2Pei/Ia32')
| -rw-r--r-- | UefiCpuPkg/Universal/Acpi/S3Resume2Pei/Ia32/AsmFuncs.S | 38 | ||||
| -rw-r--r-- | UefiCpuPkg/Universal/Acpi/S3Resume2Pei/Ia32/AsmFuncs.asm | 45 |
2 files changed, 83 insertions, 0 deletions
diff --git a/UefiCpuPkg/Universal/Acpi/S3Resume2Pei/Ia32/AsmFuncs.S b/UefiCpuPkg/Universal/Acpi/S3Resume2Pei/Ia32/AsmFuncs.S new file mode 100644 index 0000000000..ede19f21c3 --- /dev/null +++ b/UefiCpuPkg/Universal/Acpi/S3Resume2Pei/Ia32/AsmFuncs.S @@ -0,0 +1,38 @@ +#------------------------------------------------------------------------------
+#*
+#* Copyright (c) 2012, 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
+#* http://opensource.org/licenses/bsd-license.php
+#*
+#* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+#* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#*
+#* AsmFuncs.S
+#*
+#* Abstract:
+#*
+#* Assembly function to set segment selectors.
+#
+#------------------------------------------------------------------------------
+
+.text
+
+#------------------------------------------------------------------------------
+#
+# VOID
+# EFIAPI
+# AsmSetDataSelectors (
+# IN UINT16 SelectorValue
+# );
+#------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(AsmSetDataSelectors)
+ASM_PFX(AsmSetDataSelectors):
+ movl 4(%esp), %eax
+ movw %ax, %ss
+ movw %ax, %ds
+ movw %ax, %es
+ movw %ax, %fs
+ movw %ax, %gs
+ ret
diff --git a/UefiCpuPkg/Universal/Acpi/S3Resume2Pei/Ia32/AsmFuncs.asm b/UefiCpuPkg/Universal/Acpi/S3Resume2Pei/Ia32/AsmFuncs.asm new file mode 100644 index 0000000000..79496c48d7 --- /dev/null +++ b/UefiCpuPkg/Universal/Acpi/S3Resume2Pei/Ia32/AsmFuncs.asm @@ -0,0 +1,45 @@ +;------------------------------------------------------------------------------ ;
+; Copyright (c) 2012, 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
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+; Module Name:
+;
+; AsmFuncs.Asm
+;
+; Abstract:
+;
+; Assembly function to set segment selectors.
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+.686
+.model flat,C
+
+.code
+
+;------------------------------------------------------------------------------
+; VOID
+; EFIAPI
+; AsmSetDataSelectors (
+; IN UINT16 SelectorValue
+; );
+;------------------------------------------------------------------------------
+AsmSetDataSelectors PROC near public
+ mov eax, [esp + 4]
+ mov ds, ax
+ mov es, ax
+ mov fs, ax
+ mov gs, ax
+ mov ss, ax
+ ret
+AsmSetDataSelectors ENDP
+
+END
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