diff options
author | Guo Mang <mang.guo@intel.com> | 2016-12-22 15:57:14 +0800 |
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committer | Guo Mang <mang.guo@intel.com> | 2016-12-26 19:14:41 +0800 |
commit | 1760cf81e4b1847c6823ea3514a78dd120e19b6e (patch) | |
tree | 64a874b14050fe24d3bbc1bc13cd293abf8ae018 /Core/MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem.S | |
parent | 7f05fa00f73038b425002566d3afe6c3ade2ccdb (diff) | |
download | edk2-platforms-1760cf81e4b1847c6823ea3514a78dd120e19b6e.tar.xz |
MdePkg: Move to new location
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Guo Mang <mang.guo@intel.com>
Diffstat (limited to 'Core/MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem.S')
-rw-r--r-- | Core/MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem.S | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem.S b/Core/MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem.S new file mode 100644 index 0000000000..2391348b2c --- /dev/null +++ b/Core/MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem.S @@ -0,0 +1,57 @@ +#------------------------------------------------------------------------------
+#
+# Copyright (c) 2006 - 2009, 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:
+#
+# SetMem.S
+#
+# Abstract:
+#
+# SetMem function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+#------------------------------------------------------------------------------
+# VOID *
+# EFIAPI
+# InternalMemSetMem (
+# IN VOID *Buffer,
+# IN UINTN Count,
+# IN UINT8 Value
+# )
+#------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(InternalMemSetMem)
+ASM_PFX(InternalMemSetMem):
+ pushq %rdi
+ pushq %rbx
+ pushq %rcx # push Buffer
+ movq %r8, %rax # rax = Value
+ andq $0xff, %rax # rax = lower 8 bits of r8, upper 56 bits are 0
+ movb %al, %ah # ah = al
+ movw %ax, %bx # bx = ax
+ shlq $0x10, %rax # rax = ax << 16
+ movw %bx, %ax # ax = bx
+ movq %rax, %rbx # ebx = eax
+ shlq $0x20, %rax # rax = rax << 32
+ orq %rbx, %rax # eax = ebx
+ movq %rcx, %rdi # rdi = Buffer
+ movq %rdx, %rcx # rcx = Count
+ shrq $3, %rcx # rcx = rcx / 8
+ cld
+ rep stosq
+ movq %rdx, %rcx # rcx = rdx
+ andq $7, %rcx # rcx = rcx & 7
+ rep stosb
+ popq %rax # rax = Buffer
+ popq %rbx
+ popq %rdi
+ ret
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