MdePkg: Use VsIntrinsicLib for VS2022 Build Tools

Update MdePkg.dsc to use VsIntrinsicLib when building IA32 components
with VS2022 Build Tools.

Signed-off-by: Bret Barkelew <[email protected]>

MdePkg/Library/VsIntrinsicLib/IA32/llmul.asm

@@ -0,0 +1,98 @@
+;***
+;llmul.asm - long multiply routine
+;
+;       Copyright (c) Microsoft Corporation.
+;       SPDX-License-Identifier: BSD-2-Clause-Patent
+;
+;Purpose:
+;       Defines long multiply routine
+;       Both signed and unsigned routines are the same, since multiply's
+;       work out the same in 2's complement
+;       creates the following routine:
+;           __allmul
+;
+;Original Implemenation: MSVC 14.12.25827
+;
+;*******************************************************************************
+    .686
+    .model  flat,C
+    .code
+
+
+;***
+;llmul - long multiply routine
+;
+;Purpose:
+;       Does a long multiply (same for signed/unsigned)
+;       Parameters are not changed.
+;
+;Entry:
+;       Parameters are passed on the stack:
+;               1st pushed: multiplier (QWORD)
+;               2nd pushed: multiplicand (QWORD)
+;
+;Exit:
+;       EDX:EAX - product of multiplier and multiplicand
+;       NOTE: parameters are removed from the stack
+;
+;Uses:
+;       ECX
+;
+;Exceptions:
+;
+;*******************************************************************************
+_allmul PROC NEAR
+
+A       EQU     [esp + 4]       ; stack address of a
+B       EQU     [esp + 12]      ; stack address of b
+
+HIGH_PART  EQU     [4]             ; 
+LOW_PART   EQU     [0]
+
+;
+;       AHI, BHI : upper 32 bits of A and B
+;       ALO, BLO : lower 32 bits of A and B
+;
+;             ALO * BLO
+;       ALO * BHI
+; +     BLO * AHI
+; ---------------------
+;
+
+        mov     eax,HIGH_PART(A)
+        mov     ecx,HIGH_PART(B)
+        or      ecx,eax         ;test for both high dwords zero.
+        mov     ecx,LOW_PART(B)
+        jnz     short hard      ;both are zero, just mult ALO and BLO
+
+        mov     eax,LOW_PART(A)
+        mul     ecx
+
+        ret     16              ; callee restores the stack
+
+hard:
+        push    ebx
+
+; must redefine A and B since esp has been altered
+
+A2      EQU     [esp + 8]       ; stack address of a
+B2      EQU     [esp + 16]      ; stack address of b
+
+        mul     ecx             ;eax has AHI, ecx has BLO, so AHI * BLO
+        mov     ebx,eax         ;save result
+
+        mov     eax,LOW_PART(A2)
+        mul     dword ptr HIGH_PART(B2) ;ALO * BHI
+        add     ebx,eax         ;ebx = ((ALO * BHI) + (AHI * BLO))
+
+        mov     eax,LOW_PART(A2);ecx = BLO
+        mul     ecx             ;so edx:eax = ALO*BLO
+        add     edx,ebx         ;now edx has all the LO*HI stuff
+
+        pop     ebx
+
+        ret     16              ; callee restores the stack
+
+_allmul ENDP
+
+        end

MdePkg/Library/VsIntrinsicLib/VsIntrinsicLib.inf

@@ -0,0 +1,35 @@
+## @file
+#  Since the C compiler does very aggressive full program optimizations there are cases
+#  where some small number of compiler inserted functions can not be avoided.  
+#  To handle that case this NULL library can be injected into all 32bit modules
+#  so that the link time dependency is met and the modules compile.  
+#  
+#  The routines are based on src delivered with the visual studio product.  it is 
+#  critical that calling convention, stack usage, register usage, etc is in line 
+#  with what the compiler expects as there is no way to influence the behaviors
+#  for compiler inserted functions. 
+#
+# Copyright (c) Microsoft Corporation.
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+##
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = VsIntrinsicLib
+  MODULE_UNI_FILE                = VsIntrinsicLib.uni
+  FILE_GUID                      = ed449fc0-3265-40ed-91b8-435b8df0aa5f
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = NULL
+
+#
+#  VALID_ARCHITECTURES           = IA32
+#
+
+[Sources]
+
+[Sources.Ia32]
+  IA32/llmul.asm
+
+[Packages]
+  MdePkg/MdePkg.dec

MdePkg/Library/VsIntrinsicLib/VsIntrinsicLib.uni

@@ -0,0 +1,13 @@
+// /** @file
+// VsIntrinsic Library implementation.
+//
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+// **/
+
+
+#string STR_MODULE_ABSTRACT             #language en-US "VsIntrinsic Library implementation"
+
+#string STR_MODULE_DESCRIPTION          #language en-US "VsIntrinsic Library implementation"
+

MdePkg/MdePkg.ci.yaml

@@ -117,7 +117,9 @@
 
     ## options defined ci/Plugin/DscCompleteCheck
     "DscCompleteCheck": {
-        "IgnoreInf": [""],
+        "IgnoreInf": [
+            "MdePkg/Library/VsIntrinsicLib/VsIntrinsicLib.inf",   # MU_CHANGE - Ignore intrinsics for toolchains that don't support it.
+        ],
         "DscPath": "MdePkg.dsc"
     },
 

MdePkg/MdePkg.dsc

@@ -196,6 +196,13 @@
   MdePkg/Library/MipiSysTLib/MipiSysTLib.inf
   MdePkg/Library/TraceHubDebugSysTLibNull/TraceHubDebugSysTLibNull.inf
 
+# MU_CHANGE [BEGIN]
+!if $(TOOLCHAIN) == VS2017 or $(TOOLCHAIN) == VS2019 or $(TOOLCHAIN) == VS2022
+[Components.IA32]
+  MdePkg/Library/VsIntrinsicLib/VsIntrinsicLib.inf
+!endif
+# MU_CHANGE [END]
+
 [Components.EBC]
   MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf
   MdePkg/Library/UefiRuntimeLib/UefiRuntimeLib.inf