UefiCpuPkg PiSmmCpuDxeSmm: Convert Ia32/SmmInit.asm to NASM

Manually convert Ia32/SmmInit.asm to Ia32/SmmInit.nasm

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Liming Gao <liming.gao@intel.com>

UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmmInit.nasm

@@ -0,0 +1,88 @@
+;------------------------------------------------------------------------------ ;
+; Copyright (c) 2016, 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:
+;
+;   SmmInit.nasm
+;
+; Abstract:
+;
+;   Functions for relocating SMBASE's for all processors
+;
+;-------------------------------------------------------------------------------
+
+extern ASM_PFX(SmmInitHandler)
+extern ASM_PFX(mRebasedFlag)
+extern ASM_PFX(mSmmRelocationOriginalAddress)
+
+global ASM_PFX(gSmmCr3)
+global ASM_PFX(gSmmCr4)
+global ASM_PFX(gSmmCr0)
+global ASM_PFX(gSmmJmpAddr)
+global ASM_PFX(gSmmInitStack)
+global ASM_PFX(gcSmiInitGdtr)
+global ASM_PFX(gcSmmInitSize)
+global ASM_PFX(gcSmmInitTemplate)
+
+%define PROTECT_MODE_CS 0x8
+%define PROTECT_MODE_DS 0x20
+
+    SECTION .text
+
+ASM_PFX(gcSmiInitGdtr):
+            DW      0
+            DQ      0
+
+global ASM_PFX(SmmStartup)
+ASM_PFX(SmmStartup):
+    DB      0x66, 0xb8
+ASM_PFX(gSmmCr3): DD 0
+    mov     cr3, eax
+    DB      0x67, 0x66
+    lgdt    [cs:ebp + (ASM_PFX(gcSmiInitGdtr) - ASM_PFX(SmmStartup))]
+    DB      0x66, 0xb8
+ASM_PFX(gSmmCr4): DD 0
+    mov     cr4, eax
+    DB      0x66, 0xb8
+ASM_PFX(gSmmCr0): DD 0
+    DB      0xbf, PROTECT_MODE_DS, 0    ; mov di, PROTECT_MODE_DS
+    mov     cr0, eax
+    DB      0x66, 0xea                   ; jmp far [ptr48]
+ASM_PFX(gSmmJmpAddr):
+    DD      @32bit
+    DW      PROTECT_MODE_CS
+@32bit:
+    mov     ds, edi
+    mov     es, edi
+    mov     fs, edi
+    mov     gs, edi
+    mov     ss, edi
+    DB      0xbc                        ; mov esp, imm32
+ASM_PFX(gSmmInitStack): DD 0
+    call    ASM_PFX(SmmInitHandler)
+    rsm
+
+BITS 16
+ASM_PFX(gcSmmInitTemplate):
+    mov ebp, ASM_PFX(SmmStartup)
+    sub ebp, 0x30000
+    jmp ebp
+
+ASM_PFX(gcSmmInitSize): DW $ - ASM_PFX(gcSmmInitTemplate)
+
+BITS 32
+global ASM_PFX(SmmRelocationSemaphoreComplete)
+ASM_PFX(SmmRelocationSemaphoreComplete):
+    push    eax
+    mov     eax, [ASM_PFX(mRebasedFlag)]
+    mov     byte [eax], 1
+    pop     eax
+    jmp     [ASM_PFX(mSmmRelocationOriginalAddress)]
+    END