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136 lines
3.8 KiB
C
136 lines
3.8 KiB
C
/** @file
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Header file for Virtual Machine support. Contains EBC defines that can
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be of use to a disassembler for the most part. Also provides function
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prototypes for VM functions.
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Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _EBC_EXECUTE_H_
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#define _EBC_EXECUTE_H_
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//
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// Macros to check and set alignment
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//
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#define ASSERT_ALIGNED(addr, size) ASSERT (!((UINT32) (addr) & (size - 1)))
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#define IS_ALIGNED(addr, size) !((UINT32) (addr) & (size - 1))
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//
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// Debug macro
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//
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#define EBCMSG(s) gST->ConOut->OutputString (gST->ConOut, s)
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/**
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Execute an EBC image from an entry point or from a published protocol.
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@param VmPtr A pointer to a VM context.
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@retval EFI_UNSUPPORTED At least one of the opcodes is not supported.
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@retval EFI_SUCCESS All of the instructions are executed successfully.
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**/
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EFI_STATUS
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EbcExecute (
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IN VM_CONTEXT *VmPtr
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);
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/**
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Returns the version of the EBC virtual machine.
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@return The 64-bit version of EBC virtual machine.
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**/
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UINT64
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GetVmVersion (
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VOID
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);
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/**
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Writes UINTN data to memory address.
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This routine is called by the EBC data
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movement instructions that write to memory. Since these writes
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may be to the stack, which looks like (high address on top) this,
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[EBC entry point arguments]
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[VM stack]
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[EBC stack]
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we need to detect all attempts to write to the EBC entry point argument
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stack area and adjust the address (which will initially point into the
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VM stack) to point into the EBC entry point arguments.
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@param VmPtr A pointer to a VM context.
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@param Addr Address to write to.
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@param Data Value to write to Addr.
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@retval EFI_SUCCESS The instruction is executed successfully.
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@retval Other Some error occurs when writing data to the address.
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**/
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EFI_STATUS
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VmWriteMemN (
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IN VM_CONTEXT *VmPtr,
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IN UINTN Addr,
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IN UINTN Data
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);
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/**
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Writes 64-bit data to memory address.
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This routine is called by the EBC data
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movement instructions that write to memory. Since these writes
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may be to the stack, which looks like (high address on top) this,
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[EBC entry point arguments]
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[VM stack]
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[EBC stack]
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we need to detect all attempts to write to the EBC entry point argument
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stack area and adjust the address (which will initially point into the
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VM stack) to point into the EBC entry point arguments.
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@param VmPtr A pointer to a VM context.
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@param Addr Address to write to.
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@param Data Value to write to Addr.
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@retval EFI_SUCCESS The instruction is executed successfully.
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@retval Other Some error occurs when writing data to the address.
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**/
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EFI_STATUS
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VmWriteMem64 (
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IN VM_CONTEXT *VmPtr,
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IN UINTN Addr,
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IN UINT64 Data
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);
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/**
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Given a pointer to a new VM context, execute one or more instructions. This
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function is only used for test purposes via the EBC VM test protocol.
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@param This A pointer to the EFI_EBC_VM_TEST_PROTOCOL structure.
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@param VmPtr A pointer to a VM context.
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@param InstructionCount A pointer to a UINTN value holding the number of
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instructions to execute. If it holds value of 0,
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then the instruction to be executed is 1.
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@retval EFI_UNSUPPORTED At least one of the opcodes is not supported.
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@retval EFI_SUCCESS All of the instructions are executed successfully.
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**/
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EFI_STATUS
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EFIAPI
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EbcExecuteInstructions (
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IN EFI_EBC_VM_TEST_PROTOCOL *This,
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IN VM_CONTEXT *VmPtr,
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IN OUT UINTN *InstructionCount
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);
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#endif // ifndef _EBC_EXECUTE_H_
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