MdePkg BaseLib: Convert Ia32/WriteDr4.asm to NASM

The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert
Ia32/WriteDr4.asm to Ia32/WriteDr4.nasm

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>

diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf
index 7aed3dcdf4e1e95f6fb79f90bc8d8676814085e2..e317ed283d5a0e9e6ce274d8233cc5da5694d0bc 100644 (file)
--- a/MdePkg/Library/BaseLib/BaseLib.inf
+++ b/MdePkg/Library/BaseLib/BaseLib.inf
@@ -195,6 +195,7 @@
   Ia32/WriteDr6.asm | INTEL \r
   Ia32/WriteDr5.nasm| INTEL\r
   Ia32/WriteDr5.asm | INTEL \r
+  Ia32/WriteDr4.nasm| INTEL\r
   Ia32/WriteDr4.asm | INTEL \r
   Ia32/WriteDr3.asm | INTEL \r
   Ia32/WriteDr2.asm | INTEL \r

diff --git a/MdePkg/Library/BaseLib/Ia32/WriteDr4.nasm b/MdePkg/Library/BaseLib/Ia32/WriteDr4.nasm
new file mode 100644 (file)
index 0000000..a1b143a
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Ia32/WriteDr4.nasm
@@ -0,0 +1,45 @@
+;------------------------------------------------------------------------------\r
+;\r
+; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r
+; This program and the accompanying materials\r
+; are licensed and made available under the terms and conditions of the BSD License\r
+; which accompanies this distribution.  The full text of the license may be found at\r
+; http://opensource.org/licenses/bsd-license.php.\r
+;\r
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+;\r
+; Module Name:\r
+;\r
+;   WriteDr4.Asm\r
+;\r
+; Abstract:\r
+;\r
+;   AsmWriteDr4 function\r
+;\r
+; Notes:\r
+;\r
+;------------------------------------------------------------------------------\r
+\r
+    SECTION .text\r
+\r
+;------------------------------------------------------------------------------\r
+; UINTN\r
+; EFIAPI\r
+; AsmWriteDr4 (\r
+;   IN UINTN Value\r
+;   );\r
+;------------------------------------------------------------------------------\r
+global ASM_PFX(AsmWriteDr4)\r
+ASM_PFX(AsmWriteDr4):\r
+    mov     eax, [esp + 4]\r
+    ;\r
+    ; DR4 is alias to DR6 only if DE (in CR4) is cleared. Otherwise, writing to\r
+    ; this register will cause a #UD exception.\r
+    ;\r
+    ; MS assembler doesn't support this instruction since no one would use it\r
+    ; under normal circustances. Here opcode is used.\r
+    ;\r
+    DB      0xf, 0x23, 0xe0\r
+    ret\r
+\r