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| author | hhtian <hhtian@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-11-01 06:30:58 +0000 |
|---|---|---|
| committer | hhtian <hhtian@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-11-01 06:30:58 +0000 |
| commit | 97f98500c1d40eba76210961e90ea5d354bcbc18 (patch) | |
| tree | 88513b4a041208d992929db5703a4312a0497a3b /CryptoPkg/Library/BaseCryptLib/SysCall/Ia32/MathMultS64x64.c | |
| parent | a3bcde70e6dc69000f85cc5deee98101d2ae200a (diff) | |
| download | edk2-platforms-97f98500c1d40eba76210961e90ea5d354bcbc18.tar.xz | |
Add CryptoPkg (from UDK2010.UP3)
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10987 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'CryptoPkg/Library/BaseCryptLib/SysCall/Ia32/MathMultS64x64.c')
| -rw-r--r-- | CryptoPkg/Library/BaseCryptLib/SysCall/Ia32/MathMultS64x64.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/CryptoPkg/Library/BaseCryptLib/SysCall/Ia32/MathMultS64x64.c b/CryptoPkg/Library/BaseCryptLib/SysCall/Ia32/MathMultS64x64.c new file mode 100644 index 0000000000..17a20bf629 --- /dev/null +++ b/CryptoPkg/Library/BaseCryptLib/SysCall/Ia32/MathMultS64x64.c @@ -0,0 +1,79 @@ +/** @file
+ 64-bit Math Worker Function.
+ The 32-bit versions of C compiler generate calls to library routines
+ to handle 64-bit math. These functions use non-standard calling conventions.
+
+Copyright (c) 2009 - 2010, 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.
+
+**/
+
+#include <Library/BaseLib.h>
+
+/*
+ * Multiplies a 64-bit signed or unsigned value by a 64-bit signed or unsigned value
+ * and returns a 64-bit result.
+ */
+__declspec(naked) void __cdecl _allmul (void)
+{
+ //
+ // Wrapper Implementation over EDKII MultS64x64() routine
+ // INT64
+ // EFIAPI
+ // MultS64x64 (
+ // IN INT64 Multiplicand,
+ // IN INT64 Multiplier
+ // )
+ //
+ _asm {
+ ; Original local stack when calling _allmul
+ ; -----------------
+ ; | |
+ ; |---------------|
+ ; | |
+ ; |--Multiplier --|
+ ; | |
+ ; |---------------|
+ ; | |
+ ; |--Multiplicand-|
+ ; | |
+ ; |---------------|
+ ; | ReturnAddr** |
+ ; ESP---->|---------------|
+ ;
+
+ ;
+ ; Set up the local stack for Multiplicand parameter
+ ;
+ mov eax, [esp + 16]
+ push eax
+ mov eax, [esp + 16]
+ push eax
+
+ ;
+ ; Set up the local stack for Multiplier parameter
+ ;
+ mov eax, [esp + 16]
+ push eax
+ mov eax, [esp + 16]
+ push eax
+
+ ;
+ ; Call native MulS64x64 of BaseLib
+ ;
+ call MultS64x64
+
+ ;
+ ; Adjust stack
+ ;
+ add esp, 16
+
+ ret 16
+ }
+}
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