diff --git a/BaseTools/Conf/tools_def.template b/BaseTools/Conf/tools_def.template
index 2b17d3b297..88d7ab8cab 100755
--- a/BaseTools/Conf/tools_def.template
+++ b/BaseTools/Conf/tools_def.template
@@ -2759,7 +2759,7 @@ DEFINE CLANGPDB_IA32_TARGET          = -target i686-unknown-windows-gnu
 DEFINE CLANGPDB_X64_TARGET           = -target x86_64-unknown-windows-gnu
 
 DEFINE CLANGPDB_WARNING_OVERRIDES    = -Wno-parentheses-equality -Wno-tautological-compare -Wno-tautological-constant-out-of-range-compare -Wno-empty-body -Wno-unused-const-variable -Wno-varargs -Wno-unknown-warning-option -Wno-microsoft-enum-forward-reference
-DEFINE CLANGPDB_ALL_CC_FLAGS         = DEF(GCC48_ALL_CC_FLAGS) DEF(CLANGPDB_WARNING_OVERRIDES) -fno-stack-protector -funsigned-char -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang -Wno-address -Wno-shift-negative-value -Wno-unknown-pragmas -Wno-incompatible-library-redeclaration -Wno-null-dereference -mno-implicit-float -mms-bitfields -mno-stack-arg-probe -nostdlib -nostdlibinc
+DEFINE CLANGPDB_ALL_CC_FLAGS         = DEF(GCC48_ALL_CC_FLAGS) DEF(CLANGPDB_WARNING_OVERRIDES) -fno-stack-protector -funsigned-char -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang -Wno-address -Wno-shift-negative-value -Wno-unknown-pragmas -Wno-incompatible-library-redeclaration -Wno-null-dereference -mno-implicit-float -mms-bitfields -mno-stack-arg-probe -nostdlib -nostdlibinc -fseh-exceptions
 
 ###########################
 # CLANGPDB IA32 definitions
@@ -2784,15 +2784,15 @@ DEFINE CLANGPDB_ALL_CC_FLAGS         = DEF(GCC48_ALL_CC_FLAGS) DEF(CLANGPDB_WARN
 *_CLANGPDB_IA32_VFRPP_FLAGS          = DEF(GCC_VFRPP_FLAGS) DEF(CLANGPDB_IA32_TARGET)
 
 DEBUG_CLANGPDB_IA32_CC_FLAGS         = DEF(CLANGPDB_ALL_CC_FLAGS) -m32 -Oz -flto -march=i586 DEF(CLANGPDB_IA32_TARGET) -gcodeview
-DEBUG_CLANGPDB_IA32_DLINK_FLAGS      = /NOLOGO /NODEFAULTLIB /IGNORE:4001 /OPT:REF /OPT:ICF=10 /ALIGN:32 /FILEALIGN:32 /SECTION:.xdata,D /SECTION:.pdata,D /MACHINE:X86 /DLL /ENTRY:$(IMAGE_ENTRY_POINT) /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER /SAFESEH:NO /BASE:0 /DEBUG:GHASH  /lldmap
+DEBUG_CLANGPDB_IA32_DLINK_FLAGS      = /NOLOGO /NODEFAULTLIB /IGNORE:4001 /OPT:REF /OPT:ICF=10 /ALIGN:32 /FILEALIGN:32 /SECTION:.xdata,D /SECTION:.pdata,D /MACHINE:X86 /DLL /ENTRY:$(IMAGE_ENTRY_POINT) /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER /SAFESEH:NO /BASE:0 /DEBUG:GHASH /MLLVM:-exception-model=wineh /lldmap
 DEBUG_CLANGPDB_IA32_DLINK2_FLAGS     =
 
 RELEASE_CLANGPDB_IA32_CC_FLAGS       = DEF(CLANGPDB_ALL_CC_FLAGS) -m32 -Oz -flto -march=i586 DEF(CLANGPDB_IA32_TARGET)
-RELEASE_CLANGPDB_IA32_DLINK_FLAGS    = /NOLOGO /NODEFAULTLIB /IGNORE:4001 /IGNORE:4254 /OPT:REF /OPT:ICF=10 /ALIGN:32 /FILEALIGN:32 /SECTION:.xdata,D /SECTION:.pdata,D /MACHINE:X86 /DLL /ENTRY:$(IMAGE_ENTRY_POINT) /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER /SAFESEH:NO /BASE:0 /MERGE:.rdata=.data  /lldmap
+RELEASE_CLANGPDB_IA32_DLINK_FLAGS    = /NOLOGO /NODEFAULTLIB /IGNORE:4001 /IGNORE:4254 /OPT:REF /OPT:ICF=10 /ALIGN:32 /FILEALIGN:32 /SECTION:.xdata,D /SECTION:.pdata,D /MACHINE:X86 /DLL /ENTRY:$(IMAGE_ENTRY_POINT) /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER /SAFESEH:NO /BASE:0 /MERGE:.rdata=.data /MLLVM:-exception-model=wineh /lldmap
 RELEASE_CLANGPDB_IA32_DLINK2_FLAGS   =
 
 NOOPT_CLANGPDB_IA32_CC_FLAGS         = DEF(CLANGPDB_ALL_CC_FLAGS) -m32 -O0 -march=i586 DEF(CLANGPDB_IA32_TARGET) -gcodeview
-NOOPT_CLANGPDB_IA32_DLINK_FLAGS      = /NOLOGO /NODEFAULTLIB /IGNORE:4001 /OPT:REF /OPT:ICF=10 /ALIGN:32 /FILEALIGN:32 /SECTION:.xdata,D /SECTION:.pdata,D /MACHINE:X86 /DLL /ENTRY:$(IMAGE_ENTRY_POINT) /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER /SAFESEH:NO /BASE:0 /DEBUG:GHASH  /lldmap
+NOOPT_CLANGPDB_IA32_DLINK_FLAGS      = /NOLOGO /NODEFAULTLIB /IGNORE:4001 /OPT:REF /OPT:ICF=10 /ALIGN:32 /FILEALIGN:32 /SECTION:.xdata,D /SECTION:.pdata,D /MACHINE:X86 /DLL /ENTRY:$(IMAGE_ENTRY_POINT) /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER /SAFESEH:NO /BASE:0 /DEBUG:GHASH /MLLVM:-exception-model=wineh /lldmap
 NOOPT_CLANGPDB_IA32_DLINK2_FLAGS     =
 
 ##########################
@@ -2818,17 +2818,17 @@ NOOPT_CLANGPDB_IA32_DLINK2_FLAGS     =
 *_CLANGPDB_X64_VFRPP_FLAGS          = DEF(GCC_VFRPP_FLAGS) DEF(CLANGPDB_X64_TARGET)
 
 DEBUG_CLANGPDB_X64_CC_FLAGS         = DEF(CLANGPDB_ALL_CC_FLAGS) -m64 "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone -mcmodel=small -Oz -flto DEF(CLANGPDB_X64_TARGET) -gcodeview  -funwind-tables
-DEBUG_CLANGPDB_X64_DLINK_FLAGS      = /NOLOGO /NODEFAULTLIB /IGNORE:4001 /OPT:REF /OPT:ICF=10 /ALIGN:32 /FILEALIGN:32 /Machine:X64 /DLL /ENTRY:$(IMAGE_ENTRY_POINT) /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER /SAFESEH:NO /BASE:0 /DEBUG:GHASH  /lldmap
+DEBUG_CLANGPDB_X64_DLINK_FLAGS      = /NOLOGO /NODEFAULTLIB /IGNORE:4001 /OPT:REF /OPT:ICF=10 /ALIGN:32 /FILEALIGN:32 /Machine:X64 /DLL /ENTRY:$(IMAGE_ENTRY_POINT) /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER /SAFESEH:NO /BASE:0 /DEBUG:GHASH /MLLVM:-exception-model=wineh /lldmap
 DEBUG_CLANGPDB_X64_DLINK2_FLAGS     =
 DEBUG_CLANGPDB_X64_GENFW_FLAGS      = --keepexceptiontable
 
 RELEASE_CLANGPDB_X64_CC_FLAGS       = DEF(CLANGPDB_ALL_CC_FLAGS) -m64 "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone -mcmodel=small -Oz -flto DEF(CLANGPDB_X64_TARGET) -fno-unwind-tables
-RELEASE_CLANGPDB_X64_DLINK_FLAGS    = /NOLOGO /NODEFAULTLIB /IGNORE:4001 /IGNORE:4254 /OPT:REF /OPT:ICF=10 /ALIGN:32 /FILEALIGN:32 /SECTION:.xdata,D /SECTION:.pdata,D /Machine:X64 /DLL /ENTRY:$(IMAGE_ENTRY_POINT) /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER /SAFESEH:NO /BASE:0 /MERGE:.rdata=.data  /lldmap
+RELEASE_CLANGPDB_X64_DLINK_FLAGS    = /NOLOGO /NODEFAULTLIB /IGNORE:4001 /IGNORE:4254 /OPT:REF /OPT:ICF=10 /ALIGN:32 /FILEALIGN:32 /SECTION:.xdata,D /SECTION:.pdata,D /Machine:X64 /DLL /ENTRY:$(IMAGE_ENTRY_POINT) /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER /SAFESEH:NO /BASE:0 /MERGE:.rdata=.data /MLLVM:-exception-model=wineh /lldmap
 RELEASE_CLANGPDB_X64_DLINK2_FLAGS   =
 RELEASE_CLANGPDB_X64_GENFW_FLAGS    =
 
 NOOPT_CLANGPDB_X64_CC_FLAGS         = DEF(CLANGPDB_ALL_CC_FLAGS) -m64 "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone -mcmodel=small -O0 DEF(CLANGPDB_X64_TARGET) -gcodeview -funwind-tables
-NOOPT_CLANGPDB_X64_DLINK_FLAGS      = /NOLOGO /NODEFAULTLIB /IGNORE:4001 /OPT:REF /OPT:ICF=10 /ALIGN:32 /FILEALIGN:32 /Machine:X64 /DLL /ENTRY:$(IMAGE_ENTRY_POINT) /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER /SAFESEH:NO /BASE:0 /DEBUG:GHASH  /lldmap
+NOOPT_CLANGPDB_X64_DLINK_FLAGS      = /NOLOGO /NODEFAULTLIB /IGNORE:4001 /OPT:REF /OPT:ICF=10 /ALIGN:32 /FILEALIGN:32 /Machine:X64 /DLL /ENTRY:$(IMAGE_ENTRY_POINT) /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER /SAFESEH:NO /BASE:0 /DEBUG:GHASH /MLLVM:-exception-model=wineh /lldmap
 NOOPT_CLANGPDB_X64_DLINK2_FLAGS     =
 NOOPT_CLANGPDB_X64_GENFW_FLAGS      = --keepexceptiontable