diff options
| author | Jordan Justen <jordan.l.justen@intel.com> | 2016-05-30 18:51:53 -0700 |
|---|---|---|
| committer | Liming Gao <liming.gao@intel.com> | 2016-06-28 09:48:27 +0800 |
| commit | 55745c249967eed41209dcbb64f4739eb144251a (patch) | |
| tree | f3569f347a93b7dab7e0d46e60a2270484cea48d /MdePkg | |
| parent | 2c71f739de08b988e146fca2fdc95442bfb71cf0 (diff) | |
| download | edk2-platforms-55745c249967eed41209dcbb64f4739eb144251a.tar.xz | |
MdePkg BaseLib: Convert Ia32/RdRand.asm to NASM
The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert
Ia32/RdRand.asm to Ia32/RdRand.nasm
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Diffstat (limited to 'MdePkg')
| -rw-r--r-- | MdePkg/Library/BaseLib/BaseLib.inf | 3 | ||||
| -rw-r--r-- | MdePkg/Library/BaseLib/Ia32/RdRand.nasm | 90 |
2 files changed, 93 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf index a429fb1f37..c0a9e9fc3c 100644 --- a/MdePkg/Library/BaseLib/BaseLib.inf +++ b/MdePkg/Library/BaseLib/BaseLib.inf @@ -162,6 +162,7 @@ Ia32/EnablePaging64.asm | MSFT
Ia32/EnableCache.c | MSFT
Ia32/DisableCache.c | MSFT
+ Ia32/RdRand.nasm| MSFT
Ia32/RdRand.asm | MSFT
Ia32/Wbinvd.asm | INTEL
@@ -259,6 +260,7 @@ Ia32/EnablePaging64.asm | INTEL
Ia32/EnableCache.asm | INTEL
Ia32/DisableCache.asm | INTEL
+ Ia32/RdRand.nasm| INTEL
Ia32/RdRand.asm | INTEL
Ia32/GccInline.c | GCC
@@ -290,6 +292,7 @@ Ia32/LShiftU64.S | GCC
Ia32/EnableCache.S | GCC
Ia32/DisableCache.S | GCC
+ Ia32/RdRand.nasm| GCC
Ia32/RdRand.S | GCC
Ia32/DivS64x64Remainder.c
diff --git a/MdePkg/Library/BaseLib/Ia32/RdRand.nasm b/MdePkg/Library/BaseLib/Ia32/RdRand.nasm new file mode 100644 index 0000000000..1365dfcdbb --- /dev/null +++ b/MdePkg/Library/BaseLib/Ia32/RdRand.nasm @@ -0,0 +1,90 @@ +;------------------------------------------------------------------------------
+;
+; Copyright (c) 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
+; 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:
+;
+; RdRand.nasm
+;
+; Abstract:
+;
+; Generates random number through CPU RdRand instruction under 32-bit platform.
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+SECTION .text
+
+;------------------------------------------------------------------------------
+; Generates a 16 bit random number through RDRAND instruction.
+; Return TRUE if Rand generated successfully, or FALSE if not.
+;
+; BOOLEAN EFIAPI AsmRdRand16 (UINT16 *Rand);
+;------------------------------------------------------------------------------
+global ASM_PFX(AsmRdRand16)
+ASM_PFX(AsmRdRand16):
+ ; rdrand ax ; generate a 16 bit RN into ax
+ ; CF=1 if RN generated ok, otherwise CF=0
+ db 0xf, 0xc7, 0xf0 ; rdrand r16: "0f c7 /6 ModRM:r/m(w)"
+ jc rn16_ok ; jmp if CF=1
+ xor eax, eax ; reg=0 if CF=0
+ ret ; return with failure status
+rn16_ok:
+ mov edx, dword [esp + 4]
+ mov [edx], ax
+ mov eax, 1
+ ret
+
+;------------------------------------------------------------------------------
+; Generates a 32 bit random number through RDRAND instruction.
+; Return TRUE if Rand generated successfully, or FALSE if not.
+;
+; BOOLEAN EFIAPI AsmRdRand32 (UINT32 *Rand);
+;------------------------------------------------------------------------------
+global ASM_PFX(AsmRdRand32)
+ASM_PFX(AsmRdRand32):
+ ; rdrand eax ; generate a 32 bit RN into eax
+ ; CF=1 if RN generated ok, otherwise CF=0
+ db 0xf, 0xc7, 0xf0 ; rdrand r32: "0f c7 /6 ModRM:r/m(w)"
+ jc rn32_ok ; jmp if CF=1
+ xor eax, eax ; reg=0 if CF=0
+ ret ; return with failure status
+rn32_ok:
+ mov edx, dword [esp + 4]
+ mov [edx], eax
+ mov eax, 1
+ ret
+
+;------------------------------------------------------------------------------
+; Generates a 64 bit random number through RDRAND instruction.
+; Return TRUE if Rand generated successfully, or FALSE if not.
+;
+; BOOLEAN EFIAPI AsmRdRand64 (UINT64 *Rand);
+;------------------------------------------------------------------------------
+global ASM_PFX(AsmRdRand64)
+ASM_PFX(AsmRdRand64):
+ ; rdrand eax ; generate a 32 bit RN into eax
+ ; CF=1 if RN generated ok, otherwise CF=0
+ db 0xf, 0xc7, 0xf0 ; rdrand r32: "0f c7 /6 ModRM:r/m(w)"
+ jnc rn64_ret ; jmp if CF=0
+ mov edx, dword [esp + 4]
+ mov [edx], eax
+
+ db 0xf, 0xc7, 0xf0 ; generate another 32 bit RN
+ jnc rn64_ret ; jmp if CF=0
+ mov [edx + 4], eax
+
+ mov eax, 1
+ ret
+rn64_ret:
+ xor eax, eax
+ ret ; return with failure status
+
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