1 files changed, 35 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/IntelFsp2Pkg/FspSecCore/Ia32/FspHelper.nasm b/src/VBox/Devices/EFI/Firmware/IntelFsp2Pkg/FspSecCore/Ia32/FspHelper.nasm
new file mode 100644
index 00000000..461c0bfb
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/IntelFsp2Pkg/FspSecCore/Ia32/FspHelper.nasm
@@ -0,0 +1,35 @@
+;; @file
+;  Provide FSP helper function.
+;
+; Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;;
+
+    SECTION .text
+
+global ASM_PFX(FspInfoHeaderRelativeOff)
+ASM_PFX(FspInfoHeaderRelativeOff):
+   DD    0x12345678               ; This value must be patched by the build script
+
+global ASM_PFX(AsmGetFspBaseAddress)
+ASM_PFX(AsmGetFspBaseAddress):
+   call  ASM_PFX(AsmGetFspInfoHeader)
+   add   eax, 0x1C
+   mov   eax, dword [eax]
+   ret
+
+global ASM_PFX(AsmGetFspInfoHeader)
+ASM_PFX(AsmGetFspInfoHeader):
+   call  ASM_PFX(NextInstruction)
+ASM_PFX(NextInstruction):
+   pop   eax
+   sub   eax, ASM_PFX(NextInstruction)
+   add   eax, ASM_PFX(AsmGetFspInfoHeader)
+   sub   eax, dword [eax - ASM_PFX(AsmGetFspInfoHeader) + ASM_PFX(FspInfoHeaderRelativeOff)]
+   ret
+
+global ASM_PFX(AsmGetFspInfoHeaderNoStack)
+ASM_PFX(AsmGetFspInfoHeaderNoStack):
+   mov   eax, ASM_PFX(AsmGetFspInfoHeader)
+   sub   eax, dword [ASM_PFX(FspInfoHeaderRelativeOff)]
+   jmp   edi