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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>
This commit is contained in:
Jordan Justen 2016-05-30 18:51:53 -07:00 committed by Liming Gao
parent 2c71f739de
commit 55745c2499
2 changed files with 93 additions and 0 deletions
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3
MdePkg/Library/BaseLib/BaseLib.inf
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@ -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

90
MdePkg/Library/BaseLib/Ia32/RdRand.nasm Normal file
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@ -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