Add EBC, FTW, Crc32SectionExtract, NullMemoryTest modules.
CrcSectionExtract cannot build for now for some missing definitions. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2813 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qhuang8
619
MdeModulePkg/Universal/Ebc/Dxe/x64/EbcSupport.c
Normal file
619
MdeModulePkg/Universal/Ebc/Dxe/x64/EbcSupport.c
Normal file
@@ -0,0 +1,619 @@
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/*++
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Copyright (c) 2006, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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EbcSupport.c
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Abstract:
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This module contains EBC support routines that are customized based on
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the target x64 processor.
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--*/
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#include "EbcInt.h"
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#include "EbcExecute.h"
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//
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// NOTE: This is the stack size allocated for the interpreter
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// when it executes an EBC image. The requirements can change
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// based on whether or not a debugger is present, and other
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// platform-specific configurations.
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//
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#define VM_STACK_SIZE (1024 * 8)
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#define EBC_THUNK_SIZE 64
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#define STACK_REMAIN_SIZE (1024 * 4)
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STATIC
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VOID
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PushU64 (
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VM_CONTEXT *VmPtr,
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UINT64 Arg
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)
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/*++
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Routine Description:
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Push a 64 bit unsigned value to the VM stack.
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Arguments:
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VmPtr - The pointer to current VM context.
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Arg - The value to be pushed
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Returns:
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VOID
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--*/
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{
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//
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// Advance the VM stack down, and then copy the argument to the stack.
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// Hope it's aligned.
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//
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VmPtr->R[0] -= sizeof (UINT64);
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*(UINT64 *) VmPtr->R[0] = Arg;
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return;
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}
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STATIC
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UINT64
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EbcInterpret (
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UINTN Arg1,
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UINTN Arg2,
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UINTN Arg3,
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UINTN Arg4,
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UINTN Arg5,
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UINTN Arg6,
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UINTN Arg7,
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UINTN Arg8,
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UINTN Arg9,
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UINTN Arg10,
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UINTN Arg11,
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UINTN Arg12,
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UINTN Arg13,
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UINTN Arg14,
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UINTN Arg15,
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UINTN Arg16
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)
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/*++
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Routine Description:
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Begin executing an EBC image. The address of the entry point is passed
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in via a processor register, so we'll need to make a call to get the
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value.
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Arguments:
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This is a thunk function. Microsoft x64 compiler only provide fast_call
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calling convention, so the first four arguments are passed by rcx, rdx,
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r8, and r9, while other arguments are passed in stack.
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Returns:
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The value returned by the EBC application we're going to run.
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--*/
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{
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//
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// Create a new VM context on the stack
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//
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VM_CONTEXT VmContext;
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UINTN Addr;
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EFI_STATUS Status;
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UINTN StackIndex;
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//
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// Get the EBC entry point from the processor register.
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// Don't call any function before getting the EBC entry
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// point because this will collab the return register.
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//
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Addr = EbcLLGetEbcEntryPoint ();
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//
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// Now clear out our context
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//
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ZeroMem ((VOID *) &VmContext, sizeof (VM_CONTEXT));
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//
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// Set the VM instruction pointer to the correct location in memory.
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//
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VmContext.Ip = (VMIP) Addr;
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//
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// Initialize the stack pointer for the EBC. Get the current system stack
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// pointer and adjust it down by the max needed for the interpreter.
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//
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Addr = EbcLLGetStackPointer ();
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//
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// Adjust the VM's stack pointer down.
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//
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Status = GetEBCStack((EFI_HANDLE)(UINTN)-1, &VmContext.StackPool, &StackIndex);
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if (EFI_ERROR(Status)) {
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return Status;
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}
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VmContext.StackTop = (UINT8*)VmContext.StackPool + (STACK_REMAIN_SIZE);
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VmContext.R[0] = (UINT64) ((UINT8*)VmContext.StackPool + STACK_POOL_SIZE);
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VmContext.HighStackBottom = (UINTN) VmContext.R[0];
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VmContext.R[0] -= sizeof (UINTN);
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//
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// Align the stack on a natural boundary.
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//
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VmContext.R[0] &= ~(sizeof (UINTN) - 1);
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//
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// Put a magic value in the stack gap, then adjust down again.
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//
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*(UINTN *) (UINTN) (VmContext.R[0]) = (UINTN) VM_STACK_KEY_VALUE;
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VmContext.StackMagicPtr = (UINTN *) (UINTN) VmContext.R[0];
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//
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// The stack upper to LowStackTop is belong to the VM.
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//
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VmContext.LowStackTop = (UINTN) VmContext.R[0];
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//
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// For the worst case, assume there are 4 arguments passed in registers, store
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// them to VM's stack.
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//
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PushU64 (&VmContext, (UINT64) Arg16);
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PushU64 (&VmContext, (UINT64) Arg15);
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PushU64 (&VmContext, (UINT64) Arg14);
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PushU64 (&VmContext, (UINT64) Arg13);
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PushU64 (&VmContext, (UINT64) Arg12);
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PushU64 (&VmContext, (UINT64) Arg11);
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PushU64 (&VmContext, (UINT64) Arg10);
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PushU64 (&VmContext, (UINT64) Arg9);
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PushU64 (&VmContext, (UINT64) Arg8);
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PushU64 (&VmContext, (UINT64) Arg7);
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PushU64 (&VmContext, (UINT64) Arg6);
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PushU64 (&VmContext, (UINT64) Arg5);
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PushU64 (&VmContext, (UINT64) Arg4);
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PushU64 (&VmContext, (UINT64) Arg3);
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PushU64 (&VmContext, (UINT64) Arg2);
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PushU64 (&VmContext, (UINT64) Arg1);
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//
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// Interpreter assumes 64-bit return address is pushed on the stack.
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// The x64 does not do this so pad the stack accordingly.
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//
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PushU64 (&VmContext, (UINT64) 0);
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PushU64 (&VmContext, (UINT64) 0x1234567887654321ULL);
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//
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// For x64, this is where we say our return address is
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//
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VmContext.StackRetAddr = (UINT64) VmContext.R[0];
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//
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// We need to keep track of where the EBC stack starts. This way, if the EBC
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// accesses any stack variables above its initial stack setting, then we know
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// it's accessing variables passed into it, which means the data is on the
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// VM's stack.
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// When we're called, on the stack (high to low) we have the parameters, the
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// return address, then the saved ebp. Save the pointer to the return address.
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// EBC code knows that's there, so should look above it for function parameters.
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// The offset is the size of locals (VMContext + Addr + saved ebp).
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// Note that the interpreter assumes there is a 16 bytes of return address on
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// the stack too, so adjust accordingly.
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// VmContext.HighStackBottom = (UINTN)(Addr + sizeof (VmContext) + sizeof (Addr));
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//
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//
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// Begin executing the EBC code
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//
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EbcExecute (&VmContext);
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//
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// Return the value in R[7] unless there was an error
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//
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ReturnEBCStack(StackIndex);
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return (UINT64) VmContext.R[7];
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}
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STATIC
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UINT64
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ExecuteEbcImageEntryPoint (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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/*++
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Routine Description:
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Begin executing an EBC image. The address of the entry point is passed
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in via a processor register, so we'll need to make a call to get the
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value.
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Arguments:
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ImageHandle - image handle for the EBC application we're executing
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SystemTable - standard system table passed into an driver's entry point
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Returns:
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The value returned by the EBC application we're going to run.
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--*/
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{
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//
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// Create a new VM context on the stack
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//
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VM_CONTEXT VmContext;
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UINTN Addr;
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EFI_STATUS Status;
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UINTN StackIndex;
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//
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// Get the EBC entry point from the processor register. Make sure you don't
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// call any functions before this or you could mess up the register the
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// entry point is passed in.
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//
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Addr = EbcLLGetEbcEntryPoint ();
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//
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// Now clear out our context
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//
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ZeroMem ((VOID *) &VmContext, sizeof (VM_CONTEXT));
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//
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// Save the image handle so we can track the thunks created for this image
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//
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VmContext.ImageHandle = ImageHandle;
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VmContext.SystemTable = SystemTable;
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//
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// Set the VM instruction pointer to the correct location in memory.
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//
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VmContext.Ip = (VMIP) Addr;
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//
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// Initialize the stack pointer for the EBC. Get the current system stack
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// pointer and adjust it down by the max needed for the interpreter.
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//
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Addr = EbcLLGetStackPointer ();
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Status = GetEBCStack(ImageHandle, &VmContext.StackPool, &StackIndex);
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if (EFI_ERROR(Status)) {
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return Status;
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}
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VmContext.StackTop = (UINT8*)VmContext.StackPool + (STACK_REMAIN_SIZE);
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VmContext.R[0] = (UINT64) ((UINT8*)VmContext.StackPool + STACK_POOL_SIZE);
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VmContext.HighStackBottom = (UINTN) VmContext.R[0];
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VmContext.R[0] -= sizeof (UINTN);
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//
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// Put a magic value in the stack gap, then adjust down again
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//
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*(UINTN *) (UINTN) (VmContext.R[0]) = (UINTN) VM_STACK_KEY_VALUE;
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VmContext.StackMagicPtr = (UINTN *) (UINTN) VmContext.R[0];
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//
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// Align the stack on a natural boundary
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VmContext.R[0] &= ~(sizeof(UINTN) - 1);
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//
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VmContext.LowStackTop = (UINTN) VmContext.R[0];
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//
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// Simply copy the image handle and system table onto the EBC stack.
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// Greatly simplifies things by not having to spill the args.
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//
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PushU64 (&VmContext, (UINT64) SystemTable);
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PushU64 (&VmContext, (UINT64) ImageHandle);
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//
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// VM pushes 16-bytes for return address. Simulate that here.
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//
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PushU64 (&VmContext, (UINT64) 0);
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PushU64 (&VmContext, (UINT64) 0x1234567887654321ULL);
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//
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// For x64, this is where we say our return address is
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//
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VmContext.StackRetAddr = (UINT64) VmContext.R[0];
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//
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// Entry function needn't access high stack context, simply
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// put the stack pointer here.
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//
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//
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// Begin executing the EBC code
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//
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EbcExecute (&VmContext);
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//
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// Return the value in R[7] unless there was an error
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//
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ReturnEBCStack(StackIndex);
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return (UINT64) VmContext.R[7];
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}
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EFI_STATUS
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EbcCreateThunks (
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IN EFI_HANDLE ImageHandle,
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IN VOID *EbcEntryPoint,
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OUT VOID **Thunk,
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IN UINT32 Flags
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)
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/*++
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Routine Description:
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Create an IA32 thunk for the given EBC entry point.
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Arguments:
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ImageHandle - Handle of image for which this thunk is being created
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EbcEntryPoint - Address of the EBC code that the thunk is to call
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Thunk - Returned thunk we create here
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Returns:
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||||
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Standard EFI status.
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--*/
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{
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UINT8 *Ptr;
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||||
UINT8 *ThunkBase;
|
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UINT32 I;
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||||
UINT64 Addr;
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INT32 Size;
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||||
INT32 ThunkSize;
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//
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// Check alignment of pointer to EBC code
|
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//
|
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if ((UINT32) (UINTN) EbcEntryPoint & 0x01) {
|
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return EFI_INVALID_PARAMETER;
|
||||
}
|
||||
|
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Size = EBC_THUNK_SIZE;
|
||||
ThunkSize = Size;
|
||||
|
||||
Ptr = AllocatePool (Size);
|
||||
|
||||
if (Ptr == NULL) {
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return EFI_OUT_OF_RESOURCES;
|
||||
}
|
||||
//
|
||||
// Print(L"Allocate TH: 0x%X\n", (UINT32)Ptr);
|
||||
//
|
||||
// Save the start address so we can add a pointer to it to a list later.
|
||||
//
|
||||
ThunkBase = Ptr;
|
||||
|
||||
//
|
||||
// Give them the address of our buffer we're going to fix up
|
||||
//
|
||||
*Thunk = (VOID *) Ptr;
|
||||
|
||||
//
|
||||
// Add a magic code here to help the VM recognize the thunk..
|
||||
// mov rax, ca112ebccall2ebch => 48 B8 BC 2E 11 CA BC 2E 11 CA
|
||||
//
|
||||
*Ptr = 0x48;
|
||||
Ptr++;
|
||||
Size--;
|
||||
*Ptr = 0xB8;
|
||||
Ptr++;
|
||||
Size--;
|
||||
Addr = (UINT64) 0xCA112EBCCA112EBCULL;
|
||||
for (I = 0; I < sizeof (Addr); I++) {
|
||||
*Ptr = (UINT8) (UINTN) Addr;
|
||||
Addr >>= 8;
|
||||
Ptr++;
|
||||
Size--;
|
||||
}
|
||||
|
||||
//
|
||||
// Add code bytes to load up a processor register with the EBC entry point.
|
||||
// mov rax, 123456789abcdef0h => 48 B8 F0 DE BC 9A 78 56 34 12
|
||||
// The first 8 bytes of the thunk entry is the address of the EBC
|
||||
// entry point.
|
||||
//
|
||||
*Ptr = 0x48;
|
||||
Ptr++;
|
||||
Size--;
|
||||
*Ptr = 0xB8;
|
||||
Ptr++;
|
||||
Size--;
|
||||
Addr = (UINT64) EbcEntryPoint;
|
||||
for (I = 0; I < sizeof (Addr); I++) {
|
||||
*Ptr = (UINT8) (UINTN) Addr;
|
||||
Addr >>= 8;
|
||||
Ptr++;
|
||||
Size--;
|
||||
}
|
||||
|
||||
//
|
||||
// Stick in a load of ecx with the address of appropriate VM function.
|
||||
// Using r11 because it's a volatile register and won't be used in this
|
||||
// point.
|
||||
// mov r11 123456789abcdef0h => 49 BB F0 DE BC 9A 78 56 34 12
|
||||
//
|
||||
if (Flags & FLAG_THUNK_ENTRY_POINT) {
|
||||
Addr = (UINTN) ExecuteEbcImageEntryPoint;
|
||||
} else {
|
||||
Addr = (UINTN) EbcInterpret;
|
||||
}
|
||||
|
||||
//
|
||||
// mov r11 Addr => 0x49 0xBB
|
||||
//
|
||||
*Ptr = 0x49;
|
||||
Ptr++;
|
||||
Size--;
|
||||
*Ptr = 0xBB;
|
||||
Ptr++;
|
||||
Size--;
|
||||
for (I = 0; I < sizeof (Addr); I++) {
|
||||
*Ptr = (UINT8) Addr;
|
||||
Addr >>= 8;
|
||||
Ptr++;
|
||||
Size--;
|
||||
}
|
||||
//
|
||||
// Stick in jump opcode bytes for jmp r11 => 0x41 0xFF 0xE3
|
||||
//
|
||||
*Ptr = 0x41;
|
||||
Ptr++;
|
||||
Size--;
|
||||
*Ptr = 0xFF;
|
||||
Ptr++;
|
||||
Size--;
|
||||
*Ptr = 0xE3;
|
||||
Size--;
|
||||
|
||||
//
|
||||
// Double check that our defined size is ok (application error)
|
||||
//
|
||||
if (Size < 0) {
|
||||
ASSERT (FALSE);
|
||||
return EFI_BUFFER_TOO_SMALL;
|
||||
}
|
||||
//
|
||||
// Add the thunk to the list for this image. Do this last since the add
|
||||
// function flushes the cache for us.
|
||||
//
|
||||
EbcAddImageThunk (ImageHandle, (VOID *) ThunkBase, ThunkSize);
|
||||
|
||||
return EFI_SUCCESS;
|
||||
}
|
||||
|
||||
VOID
|
||||
EbcLLCALLEX (
|
||||
IN VM_CONTEXT *VmPtr,
|
||||
IN UINTN FuncAddr,
|
||||
IN UINTN NewStackPointer,
|
||||
IN VOID *FramePtr,
|
||||
IN UINT8 Size
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
|
||||
This function is called to execute an EBC CALLEX instruction.
|
||||
The function check the callee's content to see whether it is common native
|
||||
code or a thunk to another piece of EBC code.
|
||||
If the callee is common native code, use EbcLLCAllEXASM to manipulate,
|
||||
otherwise, set the VM->IP to target EBC code directly to avoid another VM
|
||||
be startup which cost time and stack space.
|
||||
|
||||
Arguments:
|
||||
|
||||
VmPtr - Pointer to a VM context.
|
||||
FuncAddr - Callee's address
|
||||
NewStackPointer - New stack pointer after the call
|
||||
FramePtr - New frame pointer after the call
|
||||
Size - The size of call instruction
|
||||
|
||||
Returns:
|
||||
|
||||
None.
|
||||
|
||||
--*/
|
||||
{
|
||||
UINTN IsThunk;
|
||||
UINTN TargetEbcAddr;
|
||||
|
||||
IsThunk = 1;
|
||||
TargetEbcAddr = 0;
|
||||
|
||||
//
|
||||
// Processor specific code to check whether the callee is a thunk to EBC.
|
||||
//
|
||||
if (*((UINT8 *)FuncAddr) != 0x48) {
|
||||
IsThunk = 0;
|
||||
goto Action;
|
||||
}
|
||||
if (*((UINT8 *)FuncAddr + 1) != 0xB8) {
|
||||
IsThunk = 0;
|
||||
goto Action;
|
||||
}
|
||||
if (*((UINT8 *)FuncAddr + 2) != 0xBC) {
|
||||
IsThunk = 0;
|
||||
goto Action;
|
||||
}
|
||||
if (*((UINT8 *)FuncAddr + 3) != 0x2E) {
|
||||
IsThunk = 0;
|
||||
goto Action;
|
||||
}
|
||||
if (*((UINT8 *)FuncAddr + 4) != 0x11) {
|
||||
IsThunk = 0;
|
||||
goto Action;
|
||||
}
|
||||
if (*((UINT8 *)FuncAddr + 5) != 0xCA) {
|
||||
IsThunk = 0;
|
||||
goto Action;
|
||||
}
|
||||
if (*((UINT8 *)FuncAddr + 6) != 0xBC) {
|
||||
IsThunk = 0;
|
||||
goto Action;
|
||||
}
|
||||
if (*((UINT8 *)FuncAddr + 7) != 0x2E) {
|
||||
IsThunk = 0;
|
||||
goto Action;
|
||||
}
|
||||
if (*((UINT8 *)FuncAddr + 8) != 0x11) {
|
||||
IsThunk = 0;
|
||||
goto Action;
|
||||
}
|
||||
if (*((UINT8 *)FuncAddr + 9) != 0xCA) {
|
||||
IsThunk = 0;
|
||||
goto Action;
|
||||
}
|
||||
if (*((UINT8 *)FuncAddr + 10) != 0x48) {
|
||||
IsThunk = 0;
|
||||
goto Action;
|
||||
}
|
||||
if (*((UINT8 *)FuncAddr + 11) != 0xB8) {
|
||||
IsThunk = 0;
|
||||
goto Action;
|
||||
}
|
||||
|
||||
CopyMem (&TargetEbcAddr, (UINT8 *)FuncAddr + 12, 8);
|
||||
|
||||
Action:
|
||||
if (IsThunk == 1){
|
||||
//
|
||||
// The callee is a thunk to EBC, adjust the stack pointer down 16 bytes and
|
||||
// put our return address and frame pointer on the VM stack.
|
||||
// Then set the VM's IP to new EBC code.
|
||||
//
|
||||
VmPtr->R[0] -= 8;
|
||||
VmWriteMemN (VmPtr, (UINTN) VmPtr->R[0], (UINTN) FramePtr);
|
||||
VmPtr->FramePtr = (VOID *) (UINTN) VmPtr->R[0];
|
||||
VmPtr->R[0] -= 8;
|
||||
VmWriteMem64 (VmPtr, (UINTN) VmPtr->R[0], (UINT64) (VmPtr->Ip + Size));
|
||||
|
||||
VmPtr->Ip = (VMIP) (UINTN) TargetEbcAddr;
|
||||
} else {
|
||||
//
|
||||
// The callee is not a thunk to EBC, call native code.
|
||||
//
|
||||
EbcLLCALLEXNative (FuncAddr, NewStackPointer, FramePtr);
|
||||
|
||||
//
|
||||
// Get return value and advance the IP.
|
||||
//
|
||||
VmPtr->R[7] = EbcLLGetReturnValue ();
|
||||
VmPtr->Ip += Size;
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user