aboutsummaryrefslogtreecommitdiffstats
path: root/MdePkg/Library/BaseLib/X64/RdRand.asm
diff options
context:
space:
mode:
Diffstat (limited to 'MdePkg/Library/BaseLib/X64/RdRand.asm')
-rw-r--r--MdePkg/Library/BaseLib/X64/RdRand.asm83
1 files changed, 0 insertions, 83 deletions
diff --git a/MdePkg/Library/BaseLib/X64/RdRand.asm b/MdePkg/Library/BaseLib/X64/RdRand.asm
deleted file mode 100644
index e378ba05965f..000000000000
--- a/MdePkg/Library/BaseLib/X64/RdRand.asm
+++ /dev/null
@@ -1,83 +0,0 @@
-;------------------------------------------------------------------------------
-;
-; Copyright (c) 2015 - 2016, 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.asm
-;
-; Abstract:
-;
-; Generates random number through CPU RdRand instruction under 64-bit platform.
-;
-; Notes:
-;
-;------------------------------------------------------------------------------
-
- .code
-
-;------------------------------------------------------------------------------
-; Generates a 16 bit random number through RDRAND instruction.
-; Return TRUE if Rand generated successfully, or FALSE if not.
-;
-; BOOLEAN EFIAPI InternalX86RdRand16 (UINT16 *Rand);
-;------------------------------------------------------------------------------
-InternalX86RdRand16 PROC
- ; rdrand ax ; generate a 16 bit RN into eax,
- ; CF=1 if RN generated ok, otherwise CF=0
- db 0fh, 0c7h, 0f0h ; rdrand r16: "0f c7 /6 ModRM:r/m(w)"
- jc rn16_ok ; jmp if CF=1
- xor rax, rax ; reg=0 if CF=0
- ret ; return with failure status
-rn16_ok:
- mov [rcx], ax
- mov rax, 1
- ret
-InternalX86RdRand16 ENDP
-
-;------------------------------------------------------------------------------
-; Generates a 32 bit random number through RDRAND instruction.
-; Return TRUE if Rand generated successfully, or FALSE if not.
-;
-; BOOLEAN EFIAPI InternalX86RdRand32 (UINT32 *Rand);
-;------------------------------------------------------------------------------
-InternalX86RdRand32 PROC
- ; rdrand eax ; generate a 32 bit RN into eax,
- ; CF=1 if RN generated ok, otherwise CF=0
- db 0fh, 0c7h, 0f0h ; rdrand r32: "0f c7 /6 ModRM:r/m(w)"
- jc rn32_ok ; jmp if CF=1
- xor rax, rax ; reg=0 if CF=0
- ret ; return with failure status
-rn32_ok:
- mov [rcx], eax
- mov rax, 1
- ret
-InternalX86RdRand32 ENDP
-
-;------------------------------------------------------------------------------
-; Generates a 64 bit random number through one RDRAND instruction.
-; Return TRUE if Rand generated successfully, or FALSE if not.
-;
-; BOOLEAN EFIAPI InternalX86RdRand64 (UINT64 *Random);
-;------------------------------------------------------------------------------
-InternalX86RdRand64 PROC
- ; rdrand rax ; generate a 64 bit RN into rax,
- ; CF=1 if RN generated ok, otherwise CF=0
- db 048h, 0fh, 0c7h, 0f0h ; rdrand r64: "REX.W + 0f c7 /6 ModRM:r/m(w)"
- jc rn64_ok ; jmp if CF=1
- xor rax, rax ; reg=0 if CF=0
- ret ; return with failure status
-rn64_ok:
- mov [rcx], rax
- mov rax, 1
- ret
-InternalX86RdRand64 ENDP
-
- END