diff options
Diffstat (limited to 'MdePkg/Library/BaseLib/X64/CpuId.S')
-rw-r--r-- | MdePkg/Library/BaseLib/X64/CpuId.S | 120 |
1 files changed, 60 insertions, 60 deletions
diff --git a/MdePkg/Library/BaseLib/X64/CpuId.S b/MdePkg/Library/BaseLib/X64/CpuId.S index bd0d8d0ae3..d417d25963 100644 --- a/MdePkg/Library/BaseLib/X64/CpuId.S +++ b/MdePkg/Library/BaseLib/X64/CpuId.S @@ -1,60 +1,60 @@ -#------------------------------------------------------------------------------ -# -# Copyright (c) 2006, Intel Corporation -# All rights reserved. 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: -# -# CpuId.S -# -# Abstract: -# -# AsmCpuid function -# -# Notes: -# -#------------------------------------------------------------------------------ - -#------------------------------------------------------------------------------ -# VOID -# EFIAPI -# AsmCpuid ( -# IN UINT32 RegisterInEax, -# OUT UINT32 *RegisterOutEax OPTIONAL, -# OUT UINT32 *RegisterOutEbx OPTIONAL, -# OUT UINT32 *RegisterOutEcx OPTIONAL, -# OUT UINT32 *RegisterOutEdx OPTIONAL -# ) -#------------------------------------------------------------------------------ -.global ASM_PFX(AsmCpuid) -ASM_PFX(AsmCpuid): - push %rbx - mov %ecx, %eax - push %rax # save Index on stack - push %rdx - cpuid - test %r9, %r9 - jz L1 - mov %ecx, (%r9) -L1: - pop %rcx - jrcxz L2 - mov %eax, (%rcx) -L2: - mov %r8, %rcx - jrcxz L3 - mov %ebx, (%rcx) -L3: - mov 0x38(%rsp), %rcx - jrcxz L4 - mov %edx, (%rcx) -L4: - pop %rax # restore Index to rax as return value - pop %rbx - ret +#------------------------------------------------------------------------------
+#
+# Copyright (c) 2006, Intel Corporation
+# All rights reserved. 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:
+#
+# CpuId.S
+#
+# Abstract:
+#
+# AsmCpuid function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+#------------------------------------------------------------------------------
+# VOID
+# EFIAPI
+# AsmCpuid (
+# IN UINT32 RegisterInEax,
+# OUT UINT32 *RegisterOutEax OPTIONAL,
+# OUT UINT32 *RegisterOutEbx OPTIONAL,
+# OUT UINT32 *RegisterOutEcx OPTIONAL,
+# OUT UINT32 *RegisterOutEdx OPTIONAL
+# )
+#------------------------------------------------------------------------------
+.global ASM_PFX(AsmCpuid)
+ASM_PFX(AsmCpuid):
+ push %rbx
+ mov %ecx, %eax
+ push %rax # save Index on stack
+ push %rdx
+ cpuid
+ test %r9, %r9
+ jz L1
+ mov %ecx, (%r9)
+L1:
+ pop %rcx
+ jrcxz L2
+ mov %eax, (%rcx)
+L2:
+ mov %r8, %rcx
+ jrcxz L3
+ mov %ebx, (%rcx)
+L3:
+ mov 0x38(%rsp), %rcx
+ jrcxz L4
+ mov %edx, (%rcx)
+L4:
+ pop %rax # restore Index to rax as return value
+ pop %rbx
+ ret
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