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MdeModulePkg: Removing ipf which is no longer supported from edk2.

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Removing rules for Ipf sources file:
* Remove the source file which path with "ipf" and also listed in
  [Sources.IPF] section of INF file.
* Remove the source file which listed in [Components.IPF] section
  of DSC file and not listed in any other [Components] section.
* Remove the embedded Ipf code for MDE_CPU_IPF.

Removing rules for Inf file:
* Remove IPF from VALID_ARCHITECTURES comments.
* Remove DXE_SAL_DRIVER from LIBRARY_CLASS in [Defines] section.
* Remove the INF which only listed in [Components.IPF] section in DSC.
* Remove statements from [BuildOptions] that provide IPF specific flags.
* Remove any IPF sepcific sections.

Removing rules for Dec file:
* Remove [Includes.IPF] section from Dec.

Removing rules for Dsc file:
* Remove IPF from SUPPORTED_ARCHITECTURES in [Defines] section of DSC.
* Remove any IPF specific sections.
* Remove statements from [BuildOptions] that provide IPF specific flags.

Cc: Star Zeng <star.zeng@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Chen A Chen <chen.a.chen@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
This commit is contained in:
Chen A Chen
2018-06-29 11:27:00 +08:00
committed by Star Zeng
parent 8d27b54bae
commit de005223b7
186 changed files with 258 additions and 3802 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
MdeModulePkg/Universal/EbcDxe/EbcDebugger.inf
View File

@@ -25,7 +25,7 @@
#
# The following information is for reference only and not required by the build tools.
#
# VALID_ARCHITECTURES = IA32 X64 IPF AARCH64
# VALID_ARCHITECTURES = IA32 X64 AARCH64
#
[Sources]
@@ -73,11 +73,6 @@
X64/EbcSupport.c
X64/EbcLowLevel.nasm
[Sources.IPF]
Ipf/EbcSupport.h
Ipf/EbcSupport.c
Ipf/EbcLowLevel.s
[Sources.AARCH64]
AArch64/EbcSupport.c
AArch64/EbcLowLevel.S

4
MdeModulePkg/Universal/EbcDxe/EbcDebuggerConfig.inf
View File

@@ -1,7 +1,7 @@
## @file
# EBC Debugger configuration application.
#
# Copyright (c) 2007 - 2016, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2007 - 2018, 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
@@ -25,7 +25,7 @@
#
# The following information is for reference only and not required by the build tools.
#
# VALID_ARCHITECTURES = IA32 X64 IPF AARCH64
# VALID_ARCHITECTURES = IA32 X64 AARCH64
#
[Sources]

7
MdeModulePkg/Universal/EbcDxe/EbcDxe.inf
View File

@@ -29,7 +29,7 @@
#
# The following information is for reference only and not required by the build tools.
#
# VALID_ARCHITECTURES = IA32 X64 IPF AARCH64
# VALID_ARCHITECTURES = IA32 X64 AARCH64
#
[Sources]
@@ -48,11 +48,6 @@
X64/EbcSupport.c
X64/EbcLowLevel.nasm
[Sources.IPF]
Ipf/EbcSupport.h
Ipf/EbcSupport.c
Ipf/EbcLowLevel.s
[Sources.AARCH64]
AArch64/EbcSupport.c
AArch64/EbcLowLevel.S

206
MdeModulePkg/Universal/EbcDxe/Ipf/EbcLowLevel.s
View File

@@ -1,206 +0,0 @@
///** @file
//
// Contains low level routines for the Virtual Machine implementation
// on an Itanium-based platform.
//
// Copyright (c) 2006 - 2011, 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.
//
//**/
.file "EbcLowLevel.s"
#define PROCEDURE_ENTRY(name) .##text; \
.##type name, @function; \
.##proc name; \
name::
#define PROCEDURE_EXIT(name) .##endp name
// Note: use of NESTED_SETUP requires number of locals (l) >= 3
#define NESTED_SETUP(i,l,o,r) \
alloc loc1=ar##.##pfs,i,l,o,r ;\
mov loc0=b0
#define NESTED_RETURN \
mov b0=loc0 ;\
mov ar##.##pfs=loc1 ;;\
br##.##ret##.##dpnt b0;;
.type CopyMem, @function;
//-----------------------------------------------------------------------------
//++
// EbcAsmLLCALLEX
//
// Implements the low level EBC CALLEX instruction. Sets up the
// stack pointer, does the spill of function arguments, and
// calls the native function. On return it restores the original
// stack pointer and returns to the caller.
//
// Arguments :
//
// On Entry :
// in0 = Address of native code to call
// in1 = New stack pointer
//
// Return Value:
//
// As per static calling conventions.
//
//--
//---------------------------------------------------------------------------
;// void EbcAsmLLCALLEX (UINTN FunctionAddr, UINTN EbcStackPointer)
PROCEDURE_ENTRY(EbcAsmLLCALLEX)
NESTED_SETUP (2,6,8,0)
// NESTED_SETUP uses loc0 and loc1 for context save
//
// Save a copy of the EBC VM stack pointer
//
mov r8 = in1;;
//
// Copy stack arguments from EBC stack into registers.
// Assume worst case and copy 8.
//
ld8 out0 = [r8], 8;;
ld8 out1 = [r8], 8;;
ld8 out2 = [r8], 8;;
ld8 out3 = [r8], 8;;
ld8 out4 = [r8], 8;;
ld8 out5 = [r8], 8;;
ld8 out6 = [r8], 8;;
ld8 out7 = [r8], 8;;
//
// Save the original stack pointer
//
mov loc2 = r12;
//
// Save the gp
//
or loc3 = r1, r0
//
// Set the new aligned stack pointer. Reserve space for the required
// 16-bytes of scratch area as well.
//
add r12 = 48, in1
//
// Now call the function. Load up the function address from the descriptor
// pointed to by in0. Then get the gp from the descriptor at the following
// address in the descriptor.
//
ld8 r31 = [in0], 8;;
ld8 r30 = [in0];;
mov b1 = r31
mov r1 = r30
(p0) br.call.dptk.many b0 = b1;;
//
// Restore the original stack pointer and gp
//
mov r12 = loc2
or r1 = loc3, r0
//
// Now return
//
NESTED_RETURN
PROCEDURE_EXIT(EbcAsmLLCALLEX)
//-----------------------------------------------------------------------------
//++
// EbcLLCALLEXNative
//
// This function is called to execute an EBC CALLEX instruction.
// This instruction requires that we thunk out to external native
// code. On return, we restore the stack pointer to its original location.
// Destroys no working registers. For IPF, at least 8 register slots
// must be allocated on the stack frame to support any number of
// arguments beiung passed to the external native function. The
// size of the stack frame is FramePtr - EbcSp. If this size is less
// than 64-bytes, the amount of stack frame allocated is rounded up
// to 64-bytes
//
// Arguments On Entry :
// in0 = CallAddr The function address.
// in1 = EbcSp The new EBC stack pointer.
// in2 = FramePtr The frame pointer.
//
// Return Value:
// None
//
// C Function Prototype:
// VOID
// EFIAPI
// EbcLLCALLEXNative (
// IN UINTN CallAddr,
// IN UINTN EbcSp,
// IN VOID *FramePtr
// );
//--
//---------------------------------------------------------------------------
PROCEDURE_ENTRY(EbcLLCALLEXNative)
NESTED_SETUP (3,6,3,0)
mov loc2 = in2;; // loc2 = in2 = FramePtr
mov loc3 = in1;; // loc3 = in1 = EbcSp
sub loc2 = loc2, loc3;; // loc2 = loc2 - loc3 = FramePtr - EbcSp
mov out2 = loc2;; // out2 = loc2 = FramePtr - EbcSp
mov loc4 = 0x40;; // loc4 = 0x40
cmp.leu p6 = out2, loc4;; // IF out2 < loc4 THEN P6=1 ELSE P6=0; IF (FramePtr - EbcSp) < 0x40 THEN P6 = 1 ELSE P6=0
(p6) mov loc2 = loc4;; // IF P6==1 THEN loc2 = loc4 = 0x40
mov loc4 = r12;; // save sp
or loc5 = r1, r0 // save gp
sub r12 = r12, loc2;; // sp = sp - loc2 = sp - MAX (0x40, FramePtr - EbcSp)
and r12 = -0x10, r12 // Round sp down to the nearest 16-byte boundary
mov out1 = in1;; // out1 = EbcSp
mov out0 = r12;; // out0 = sp
adds r12 = -0x8, r12
(p0) br.call.dptk.many b0 = CopyMem;; // CopyMem (sp, EbcSp, (FramePtr - EbcSp))
adds r12 = 0x8, r12
mov out0 = in0;; // out0 = CallAddr
mov out1 = r12;; // out1 = sp
(p0) br.call.dptk.many b0 = EbcAsmLLCALLEX;; // EbcAsmLLCALLEX (CallAddr, sp)
mov r12 = loc4;; // restore sp
or r1 = loc5, r0 // restore gp
NESTED_RETURN
PROCEDURE_EXIT(EbcLLCALLEXNative)
//
// UINTN EbcLLGetEbcEntryPoint(VOID)
//
// Description:
// Simply return, so that the caller retrieves the return register
// contents (R8). That's where the thunk-to-ebc code stuffed the
// EBC entry point.
//
PROCEDURE_ENTRY(EbcLLGetEbcEntryPoint)
br.ret.sptk b0 ;;
PROCEDURE_EXIT(EbcLLGetEbcEntryPoint)

884
MdeModulePkg/Universal/EbcDxe/Ipf/EbcSupport.c
View File

@@ -1,884 +0,0 @@
/** @file
This module contains EBC support routines that are customized based on
the target processor.
Copyright (c) 2006 - 2012, 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.
**/
#include "EbcInt.h"
#include "EbcExecute.h"
#include "EbcSupport.h"
#include "EbcDebuggerHook.h"
/**
Given raw bytes of Itanium based code, format them into a bundle and
write them out.
@param MemPtr pointer to memory location to write the bundles
to.
@param Template 5-bit template.
@param Slot0 Instruction slot 0 data for the bundle.
@param Slot1 Instruction slot 1 data for the bundle.
@param Slot2 Instruction slot 2 data for the bundle.
@retval EFI_INVALID_PARAMETER Pointer is not aligned
@retval EFI_INVALID_PARAMETER No more than 5 bits in template
@retval EFI_INVALID_PARAMETER More than 41 bits used in code
@retval EFI_SUCCESS All data is written.
**/
EFI_STATUS
WriteBundle (
IN VOID *MemPtr,
IN UINT8 Template,
IN UINT64 Slot0,
IN UINT64 Slot1,
IN UINT64 Slot2
);
/**
Pushes a 64 bit unsigned value to the VM stack.
@param VmPtr The pointer to current VM context.
@param Arg The value to be pushed.
**/
VOID
PushU64 (
IN VM_CONTEXT *VmPtr,
IN UINT64 Arg
)
{
//
// Advance the VM stack down, and then copy the argument to the stack.
// Hope it's aligned.
//
VmPtr->Gpr[0] -= sizeof (UINT64);
*(UINT64 *) VmPtr->Gpr[0] = Arg;
}
/**
Begin executing an EBC image. The address of the entry point is passed
in via a processor register, so we'll need to make a call to get the
value.
This is a thunk function. Microsoft x64 compiler only provide fast_call
calling convention, so the first four arguments are passed by rcx, rdx,
r8, and r9, while other arguments are passed in stack.
@param Arg1 The 1st argument.
@param ... The variable arguments list.
@return The value returned by the EBC application we're going to run.
**/
UINT64
EFIAPI
EbcInterpret (
UINT64 Arg1,
...
)
{
//
// Create a new VM context on the stack
//
VM_CONTEXT VmContext;
UINTN Addr;
EFI_STATUS Status;
UINTN StackIndex;
VA_LIST List;
UINT64 Arg2;
UINT64 Arg3;
UINT64 Arg4;
UINT64 Arg5;
UINT64 Arg6;
UINT64 Arg7;
UINT64 Arg8;
UINT64 Arg9;
UINT64 Arg10;
UINT64 Arg11;
UINT64 Arg12;
UINT64 Arg13;
UINT64 Arg14;
UINT64 Arg15;
UINT64 Arg16;
//
// Get the EBC entry point from the processor register. Make sure you don't
// call any functions before this or you could mess up the register the
// entry point is passed in.
//
Addr = EbcLLGetEbcEntryPoint ();
//
// Need the args off the stack.
//
VA_START (List, Arg1);
Arg2 = VA_ARG (List, UINT64);
Arg3 = VA_ARG (List, UINT64);
Arg4 = VA_ARG (List, UINT64);
Arg5 = VA_ARG (List, UINT64);
Arg6 = VA_ARG (List, UINT64);
Arg7 = VA_ARG (List, UINT64);
Arg8 = VA_ARG (List, UINT64);
Arg9 = VA_ARG (List, UINT64);
Arg10 = VA_ARG (List, UINT64);
Arg11 = VA_ARG (List, UINT64);
Arg12 = VA_ARG (List, UINT64);
Arg13 = VA_ARG (List, UINT64);
Arg14 = VA_ARG (List, UINT64);
Arg15 = VA_ARG (List, UINT64);
Arg16 = VA_ARG (List, UINT64);
VA_END (List);
//
// Now clear out our context
//
ZeroMem ((VOID *) &VmContext, sizeof (VM_CONTEXT));
//
// Set the VM instruction pointer to the correct location in memory.
//
VmContext.Ip = (VMIP) Addr;
//
// Initialize the stack pointer for the EBC. Get the current system stack
// pointer and adjust it down by the max needed for the interpreter.
//
//
// NOTE: Eventually we should have the interpreter allocate memory
// for stack space which it will use during its execution. This
// would likely improve performance because the interpreter would
// no longer be required to test each memory access and adjust
// those reading from the stack gap.
//
// For IPF, the stack looks like (assuming 10 args passed)
// arg10
// arg9 (Bottom of high stack)
// [ stack gap for interpreter execution ]
// [ magic value for detection of stack corruption ]
// arg8 (Top of low stack)
// arg7....
// arg1
// [ 64-bit return address ]
// [ ebc stack ]
// If the EBC accesses memory in the stack gap, then we assume that it's
// actually trying to access args9 and greater. Therefore we need to
// adjust memory accesses in this region to point above the stack gap.
//
//
// Now adjust the EBC stack pointer down to leave a gap for interpreter
// execution. Then stuff a magic value there.
//
Status = GetEBCStack((EFI_HANDLE)(UINTN)-1, &VmContext.StackPool, &StackIndex);
if (EFI_ERROR(Status)) {
return Status;
}
VmContext.StackTop = (UINT8*)VmContext.StackPool + (STACK_REMAIN_SIZE);
VmContext.Gpr[0] = (UINT64) ((UINT8*)VmContext.StackPool + STACK_POOL_SIZE);
VmContext.HighStackBottom = (UINTN) VmContext.Gpr[0];
VmContext.Gpr[0] -= sizeof (UINTN);
PushU64 (&VmContext, (UINT64) VM_STACK_KEY_VALUE);
VmContext.StackMagicPtr = (UINTN *) VmContext.Gpr[0];
VmContext.LowStackTop = (UINTN) VmContext.Gpr[0];
//
// Push the EBC arguments on the stack. Does not matter that they may not
// all be valid.
//
PushU64 (&VmContext, Arg16);
PushU64 (&VmContext, Arg15);
PushU64 (&VmContext, Arg14);
PushU64 (&VmContext, Arg13);
PushU64 (&VmContext, Arg12);
PushU64 (&VmContext, Arg11);
PushU64 (&VmContext, Arg10);
PushU64 (&VmContext, Arg9);
PushU64 (&VmContext, Arg8);
PushU64 (&VmContext, Arg7);
PushU64 (&VmContext, Arg6);
PushU64 (&VmContext, Arg5);
PushU64 (&VmContext, Arg4);
PushU64 (&VmContext, Arg3);
PushU64 (&VmContext, Arg2);
PushU64 (&VmContext, Arg1);
//
// Push a bogus return address on the EBC stack because the
// interpreter expects one there. For stack alignment purposes on IPF,
// EBC return addresses are always 16 bytes. Push a bogus value as well.
//
PushU64 (&VmContext, 0);
PushU64 (&VmContext, 0xDEADBEEFDEADBEEF);
VmContext.StackRetAddr = (UINT64) VmContext.Gpr[0];
//
// Begin executing the EBC code
//
EbcDebuggerHookEbcInterpret (&VmContext);
EbcExecute (&VmContext);
//
// Return the value in Gpr[7] unless there was an error
//
ReturnEBCStack(StackIndex);
return (UINT64) VmContext.Gpr[7];
}
/**
Begin executing an EBC image. The address of the entry point is passed
in via a processor register, so we'll need to make a call to get the
value.
@param ImageHandle image handle for the EBC application we're executing
@param SystemTable standard system table passed into an driver's entry
point
@return The value returned by the EBC application we're going to run.
**/
UINT64
EFIAPI
ExecuteEbcImageEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
//
// Create a new VM context on the stack
//
VM_CONTEXT VmContext;
UINTN Addr;
EFI_STATUS Status;
UINTN StackIndex;
//
// Get the EBC entry point from the processor register. Make sure you don't
// call any functions before this or you could mess up the register the
// entry point is passed in.
//
Addr = EbcLLGetEbcEntryPoint ();
//
// Now clear out our context
//
ZeroMem ((VOID *) &VmContext, sizeof (VM_CONTEXT));
//
// Save the image handle so we can track the thunks created for this image
//
VmContext.ImageHandle = ImageHandle;
VmContext.SystemTable = SystemTable;
//
// Set the VM instruction pointer to the correct location in memory.
//
VmContext.Ip = (VMIP) Addr;
//
// Get the stack pointer. This is the bottom of the upper stack.
//
Status = GetEBCStack(ImageHandle, &VmContext.StackPool, &StackIndex);
if (EFI_ERROR(Status)) {
return Status;
}
VmContext.StackTop = (UINT8*)VmContext.StackPool + (STACK_REMAIN_SIZE);
VmContext.Gpr[0] = (UINT64) ((UINT8*)VmContext.StackPool + STACK_POOL_SIZE);
VmContext.HighStackBottom = (UINTN) VmContext.Gpr[0];
VmContext.Gpr[0] -= sizeof (UINTN);
//
// Allocate stack space for the interpreter. Then put a magic value
// at the bottom so we can detect stack corruption.
//
PushU64 (&VmContext, (UINT64) VM_STACK_KEY_VALUE);
VmContext.StackMagicPtr = (UINTN *) (UINTN) VmContext.Gpr[0];
//
// When we thunk to external native code, we copy the last 8 qwords from
// the EBC stack into the processor registers, and adjust the stack pointer
// up. If the caller is not passing 8 parameters, then we've moved the
// stack pointer up into the stack gap. If this happens, then the caller
// can mess up the stack gap contents (in particular our magic value).
// Therefore, leave another gap below the magic value. Pick 10 qwords down,
// just as a starting point.
//
VmContext.Gpr[0] -= 10 * sizeof (UINT64);
//
// Align the stack pointer such that after pushing the system table,
// image handle, and return address on the stack, it's aligned on a 16-byte
// boundary as required for IPF.
//
VmContext.Gpr[0] &= (INT64)~0x0f;
VmContext.LowStackTop = (UINTN) VmContext.Gpr[0];
//
// Simply copy the image handle and system table onto the EBC stack.
// Greatly simplifies things by not having to spill the args
//
PushU64 (&VmContext, (UINT64) SystemTable);
PushU64 (&VmContext, (UINT64) ImageHandle);
//
// Interpreter assumes 64-bit return address is pushed on the stack.
// IPF does not do this so pad the stack accordingly. Also, a
// "return address" is 16 bytes as required for IPF stack alignments.
//
PushU64 (&VmContext, (UINT64) 0);
PushU64 (&VmContext, (UINT64) 0x1234567887654321);
VmContext.StackRetAddr = (UINT64) VmContext.Gpr[0];
//
// Begin executing the EBC code
//
EbcDebuggerHookExecuteEbcImageEntryPoint (&VmContext);
EbcExecute (&VmContext);
//
// Return the value in Gpr[7] unless there was an error
//
ReturnEBCStack(StackIndex);
return (UINT64) VmContext.Gpr[7];
}
/**
Create thunks for an EBC image entry point, or an EBC protocol service.
@param ImageHandle Image handle for the EBC image. If not null, then
we're creating a thunk for an image entry point.
@param EbcEntryPoint Address of the EBC code that the thunk is to call
@param Thunk Returned thunk we create here
@param Flags Flags indicating options for creating the thunk
@retval EFI_SUCCESS The thunk was created successfully.
@retval EFI_INVALID_PARAMETER The parameter of EbcEntryPoint is not 16-bit
aligned.
@retval EFI_OUT_OF_RESOURCES There is not enough memory to created the EBC
Thunk.
@retval EFI_BUFFER_TOO_SMALL EBC_THUNK_SIZE is not larger enough.
**/
EFI_STATUS
EbcCreateThunks (
IN EFI_HANDLE ImageHandle,
IN VOID *EbcEntryPoint,
OUT VOID **Thunk,
IN UINT32 Flags
)
{
UINT8 *Ptr;
UINT8 *ThunkBase;
UINT64 Addr;
UINT64 Code[3]; // Code in a bundle
UINT64 RegNum; // register number for MOVL
UINT64 BitI; // bits of MOVL immediate data
UINT64 BitIc; // bits of MOVL immediate data
UINT64 BitImm5c; // bits of MOVL immediate data
UINT64 BitImm9d; // bits of MOVL immediate data
UINT64 BitImm7b; // bits of MOVL immediate data
UINT64 Br; // branch register for loading and jumping
UINT64 *Data64Ptr;
UINT32 ThunkSize;
UINT32 Size;
//
// Check alignment of pointer to EBC code, which must always be aligned
// on a 2-byte boundary.
//
if ((UINT32) (UINTN) EbcEntryPoint & 0x01) {
return EFI_INVALID_PARAMETER;
}
//
// Allocate memory for the thunk. Make the (most likely incorrect) assumption
// that the returned buffer is not aligned, so round up to the next
// alignment size.
//
Size = EBC_THUNK_SIZE + EBC_THUNK_ALIGNMENT - 1;
ThunkSize = Size;
Ptr = EbcAllocatePoolForThunk (Size);
if (Ptr == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Save the start address of the buffer.
//
ThunkBase = Ptr;
//
// Make sure it's aligned for code execution. If not, then
// round up.
//
if ((UINT32) (UINTN) Ptr & (EBC_THUNK_ALIGNMENT - 1)) {
Ptr = (UINT8 *) (((UINTN) Ptr + (EBC_THUNK_ALIGNMENT - 1)) &~ (UINT64) (EBC_THUNK_ALIGNMENT - 1));
}
//
// Return the pointer to the thunk to the caller to user as the
// image entry point.
//
*Thunk = (VOID *) Ptr;
//
// Clear out the thunk entry
// ZeroMem(Ptr, Size);
//
// For IPF, when you do a call via a function pointer, the function pointer
// actually points to a function descriptor which consists of a 64-bit
// address of the function, followed by a 64-bit gp for the function being
// called. See the the Software Conventions and Runtime Architecture Guide
// for details.
// So first off in our thunk, create a descriptor for our actual thunk code.
// This means we need to create a pointer to the thunk code (which follows
// the descriptor we're going to create), followed by the gp of the Vm
// interpret function we're going to eventually execute.
//
Data64Ptr = (UINT64 *) Ptr;
//
// Write the function's entry point (which is our thunk code that follows
// this descriptor we're creating).
//
*Data64Ptr = (UINT64) (Data64Ptr + 2);
//
// Get the gp from the descriptor for EbcInterpret and stuff it in our thunk
// descriptor.
//
*(Data64Ptr + 1) = *(UINT64 *) ((UINT64 *) (UINTN) EbcInterpret + 1);
//
// Advance our thunk data pointer past the descriptor. Since the
// descriptor consists of 16 bytes, the pointer is still aligned for
// IPF code execution (on 16-byte boundary).
//
Ptr += sizeof (UINT64) * 2;
//
// *************************** MAGIC BUNDLE ********************************
//
// Write magic code bundle for: movl r8 = 0xca112ebcca112ebc to help the VM
// to recognize it is a thunk.
//
Addr = (UINT64) 0xCA112EBCCA112EBC;
//
// Now generate the code bytes. First is nop.m 0x0
//
Code[0] = OPCODE_NOP;
//
// Next is simply Addr[62:22] (41 bits) of the address
//
Code[1] = RShiftU64 (Addr, 22) & 0x1ffffffffff;
//
// Extract bits from the address for insertion into the instruction
// i = Addr[63:63]
//
BitI = RShiftU64 (Addr, 63) & 0x01;
//
// ic = Addr[21:21]
//
BitIc = RShiftU64 (Addr, 21) & 0x01;
//
// imm5c = Addr[20:16] for 5 bits
//
BitImm5c = RShiftU64 (Addr, 16) & 0x1F;
//
// imm9d = Addr[15:7] for 9 bits
//
BitImm9d = RShiftU64 (Addr, 7) & 0x1FF;
//
// imm7b = Addr[6:0] for 7 bits
//
BitImm7b = Addr & 0x7F;
//
// The EBC entry point will be put into r8, so r8 can be used here
// temporary. R8 is general register and is auto-serialized.
//
RegNum = 8;
//
// Next is jumbled data, including opcode and rest of address
//
Code[2] = LShiftU64 (BitImm7b, 13);
Code[2] = Code[2] | LShiftU64 (0x00, 20); // vc
Code[2] = Code[2] | LShiftU64 (BitIc, 21);
Code[2] = Code[2] | LShiftU64 (BitImm5c, 22);
Code[2] = Code[2] | LShiftU64 (BitImm9d, 27);
Code[2] = Code[2] | LShiftU64 (BitI, 36);
Code[2] = Code[2] | LShiftU64 ((UINT64)MOVL_OPCODE, 37);
Code[2] = Code[2] | LShiftU64 ((RegNum & 0x7F), 6);
WriteBundle ((VOID *) Ptr, 0x05, Code[0], Code[1], Code[2]);
//
// *************************** FIRST BUNDLE ********************************
//
// Write code bundle for: movl r8 = EBC_ENTRY_POINT so we pass
// the ebc entry point in to the interpreter function via a processor
// register.
// Note -- we could easily change this to pass in a pointer to a structure
// that contained, among other things, the EBC image's entry point. But
// for now pass it directly.
//
Ptr += 16;
Addr = (UINT64) EbcEntryPoint;
//
// Now generate the code bytes. First is nop.m 0x0
//
Code[0] = OPCODE_NOP;
//
// Next is simply Addr[62:22] (41 bits) of the address
//
Code[1] = RShiftU64 (Addr, 22) & 0x1ffffffffff;
//
// Extract bits from the address for insertion into the instruction
// i = Addr[63:63]
//
BitI = RShiftU64 (Addr, 63) & 0x01;
//
// ic = Addr[21:21]
//
BitIc = RShiftU64 (Addr, 21) & 0x01;
//
// imm5c = Addr[20:16] for 5 bits
//
BitImm5c = RShiftU64 (Addr, 16) & 0x1F;
//
// imm9d = Addr[15:7] for 9 bits
//
BitImm9d = RShiftU64 (Addr, 7) & 0x1FF;
//
// imm7b = Addr[6:0] for 7 bits
//
BitImm7b = Addr & 0x7F;
//
// Put the EBC entry point in r8, which is the location of the return value
// for functions.
//
RegNum = 8;
//
// Next is jumbled data, including opcode and rest of address
//
Code[2] = LShiftU64 (BitImm7b, 13);
Code[2] = Code[2] | LShiftU64 (0x00, 20); // vc
Code[2] = Code[2] | LShiftU64 (BitIc, 21);
Code[2] = Code[2] | LShiftU64 (BitImm5c, 22);
Code[2] = Code[2] | LShiftU64 (BitImm9d, 27);
Code[2] = Code[2] | LShiftU64 (BitI, 36);
Code[2] = Code[2] | LShiftU64 ((UINT64)MOVL_OPCODE, 37);
Code[2] = Code[2] | LShiftU64 ((RegNum & 0x7F), 6);
WriteBundle ((VOID *) Ptr, 0x05, Code[0], Code[1], Code[2]);
//
// *************************** NEXT BUNDLE *********************************
//
// Write code bundle for:
// movl rx = offset_of(EbcInterpret|ExecuteEbcImageEntryPoint)
//
// Advance pointer to next bundle, then compute the offset from this bundle
// to the address of the entry point of the interpreter.
//
Ptr += 16;
if ((Flags & FLAG_THUNK_ENTRY_POINT) != 0) {
Addr = (UINT64) ExecuteEbcImageEntryPoint;
} else {
Addr = (UINT64) EbcInterpret;
}
//
// Indirection on Itanium-based systems
//
Addr = *(UINT64 *) Addr;
//
// Now write the code to load the offset into a register
//
Code[0] = OPCODE_NOP;
//
// Next is simply Addr[62:22] (41 bits) of the address
//
Code[1] = RShiftU64 (Addr, 22) & 0x1ffffffffff;
//
// Extract bits from the address for insertion into the instruction
// i = Addr[63:63]
//
BitI = RShiftU64 (Addr, 63) & 0x01;
//
// ic = Addr[21:21]
//
BitIc = RShiftU64 (Addr, 21) & 0x01;
//
// imm5c = Addr[20:16] for 5 bits
//
BitImm5c = RShiftU64 (Addr, 16) & 0x1F;
//
// imm9d = Addr[15:7] for 9 bits
//
BitImm9d = RShiftU64 (Addr, 7) & 0x1FF;
//
// imm7b = Addr[6:0] for 7 bits
//
BitImm7b = Addr & 0x7F;
//
// Put it in r31, a scratch register
//
RegNum = 31;
//
// Next is jumbled data, including opcode and rest of address
//
Code[2] = LShiftU64(BitImm7b, 13);
Code[2] = Code[2] | LShiftU64 (0x00, 20); // vc
Code[2] = Code[2] | LShiftU64 (BitIc, 21);
Code[2] = Code[2] | LShiftU64 (BitImm5c, 22);
Code[2] = Code[2] | LShiftU64 (BitImm9d, 27);
Code[2] = Code[2] | LShiftU64 (BitI, 36);
Code[2] = Code[2] | LShiftU64 ((UINT64)MOVL_OPCODE, 37);
Code[2] = Code[2] | LShiftU64 ((RegNum & 0x7F), 6);
WriteBundle ((VOID *) Ptr, 0x05, Code[0], Code[1], Code[2]);
//
// *************************** NEXT BUNDLE *********************************
//
// Load branch register with EbcInterpret() function offset from the bundle
// address: mov b6 = RegNum
//
// See volume 3 page 4-29 of the Arch. Software Developer's Manual.
//
// Advance pointer to next bundle
//
Ptr += 16;
Code[0] = OPCODE_NOP;
Code[1] = OPCODE_NOP;
Code[2] = OPCODE_MOV_BX_RX;
//
// Pick a branch register to use. Then fill in the bits for the branch
// register and user register (same user register as previous bundle).
//
Br = 6;
Code[2] |= LShiftU64 (Br, 6);
Code[2] |= LShiftU64 (RegNum, 13);
WriteBundle ((VOID *) Ptr, 0x0d, Code[0], Code[1], Code[2]);
//
// *************************** NEXT BUNDLE *********************************
//
// Now do the branch: (p0) br.cond.sptk.few b6
//
// Advance pointer to next bundle.
// Fill in the bits for the branch register (same reg as previous bundle)
//
Ptr += 16;
Code[0] = OPCODE_NOP;
Code[1] = OPCODE_NOP;
Code[2] = OPCODE_BR_COND_SPTK_FEW;
Code[2] |= LShiftU64 (Br, 13);
WriteBundle ((VOID *) Ptr, 0x1d, Code[0], Code[1], Code[2]);
//
// Add the thunk to our list of allocated thunks so we can do some cleanup
// when the image is unloaded. Do this last since the Add function flushes
// the instruction cache for us.
//
EbcAddImageThunk (ImageHandle, (VOID *) ThunkBase, ThunkSize);
//
// Done
//
return EFI_SUCCESS;
}
/**
Given raw bytes of Itanium based code, format them into a bundle and
write them out.
@param MemPtr pointer to memory location to write the bundles
to.
@param Template 5-bit template.
@param Slot0 Instruction slot 0 data for the bundle.
@param Slot1 Instruction slot 1 data for the bundle.
@param Slot2 Instruction slot 2 data for the bundle.
@retval EFI_INVALID_PARAMETER Pointer is not aligned
@retval EFI_INVALID_PARAMETER No more than 5 bits in template
@retval EFI_INVALID_PARAMETER More than 41 bits used in code
@retval EFI_SUCCESS All data is written.
**/
EFI_STATUS
WriteBundle (
IN VOID *MemPtr,
IN UINT8 Template,
IN UINT64 Slot0,
IN UINT64 Slot1,
IN UINT64 Slot2
)
{
UINT8 *BPtr;
UINT32 Index;
UINT64 Low64;
UINT64 High64;
//
// Verify pointer is aligned
//
if ((UINT64) MemPtr & 0xF) {
return EFI_INVALID_PARAMETER;
}
//
// Verify no more than 5 bits in template
//
if ((Template &~0x1F) != 0) {
return EFI_INVALID_PARAMETER;
}
//
// Verify max of 41 bits used in code
//
if (((Slot0 | Slot1 | Slot2) &~0x1ffffffffff) != 0) {
return EFI_INVALID_PARAMETER;
}
Low64 = LShiftU64 (Slot1, 46);
Low64 = Low64 | LShiftU64 (Slot0, 5) | Template;
High64 = RShiftU64 (Slot1, 18);
High64 = High64 | LShiftU64 (Slot2, 23);
//
// Now write it all out
//
BPtr = (UINT8 *) MemPtr;
for (Index = 0; Index < 8; Index++) {
*BPtr = (UINT8) Low64;
Low64 = RShiftU64 (Low64, 8);
BPtr++;
}
for (Index = 0; Index < 8; Index++) {
*BPtr = (UINT8) High64;
High64 = RShiftU64 (High64, 8);
BPtr++;
}
return EFI_SUCCESS;
}
/**
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.
@param VmPtr Pointer to a VM context.
@param FuncAddr Callee's address
@param NewStackPointer New stack pointer after the call
@param FramePtr New frame pointer after the call
@param Size The size of call instruction
**/
VOID
EbcLLCALLEX (
IN VM_CONTEXT *VmPtr,
IN UINTN FuncAddr,
IN UINTN NewStackPointer,
IN VOID *FramePtr,
IN UINT8 Size
)
{
UINTN IsThunk;
UINTN TargetEbcAddr;
UINTN CodeOne18;
UINTN CodeOne23;
UINTN CodeTwoI;
UINTN CodeTwoIc;
UINTN CodeTwo7b;
UINTN CodeTwo5c;
UINTN CodeTwo9d;
UINTN CalleeAddr;
IsThunk = 1;
TargetEbcAddr = 0;
//
// FuncAddr points to the descriptor of the target instructions.
//
CalleeAddr = *((UINT64 *)FuncAddr);
//
// Processor specific code to check whether the callee is a thunk to EBC.
//
if (*((UINT64 *)CalleeAddr) != 0xBCCA000100000005) {
IsThunk = 0;
goto Action;
}
if (*((UINT64 *)CalleeAddr + 1) != 0x697623C1004A112E) {
IsThunk = 0;
goto Action;
}
CodeOne18 = RShiftU64 (*((UINT64 *)CalleeAddr + 2), 46) & 0x3FFFF;
CodeOne23 = (*((UINT64 *)CalleeAddr + 3)) & 0x7FFFFF;
CodeTwoI = RShiftU64 (*((UINT64 *)CalleeAddr + 3), 59) & 0x1;
CodeTwoIc = RShiftU64 (*((UINT64 *)CalleeAddr + 3), 44) & 0x1;
CodeTwo7b = RShiftU64 (*((UINT64 *)CalleeAddr + 3), 36) & 0x7F;
CodeTwo5c = RShiftU64 (*((UINT64 *)CalleeAddr + 3), 45) & 0x1F;
CodeTwo9d = RShiftU64 (*((UINT64 *)CalleeAddr + 3), 50) & 0x1FF;
TargetEbcAddr = CodeTwo7b;
TargetEbcAddr = TargetEbcAddr | LShiftU64 (CodeTwo9d, 7);
TargetEbcAddr = TargetEbcAddr | LShiftU64 (CodeTwo5c, 16);
TargetEbcAddr = TargetEbcAddr | LShiftU64 (CodeTwoIc, 21);
TargetEbcAddr = TargetEbcAddr | LShiftU64 (CodeOne18, 22);
TargetEbcAddr = TargetEbcAddr | LShiftU64 (CodeOne23, 40);
TargetEbcAddr = TargetEbcAddr | LShiftU64 (CodeTwoI, 63);
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->Gpr[0] -= 8;
VmWriteMemN (VmPtr, (UINTN) VmPtr->Gpr[0], (UINTN) FramePtr);
VmPtr->FramePtr = (VOID *) (UINTN) VmPtr->Gpr[0];
VmPtr->Gpr[0] -= 8;
VmWriteMem64 (VmPtr, (UINTN) VmPtr->Gpr[0], (UINT64) (VmPtr->Ip + Size));
VmPtr->Ip = (VMIP) (UINTN) TargetEbcAddr;
} else {
//
// The callee is not a thunk to EBC, call native code,
// and get return value.
//
VmPtr->Gpr[7] = EbcLLCALLEXNative (FuncAddr, NewStackPointer, FramePtr);
//
// Advance the IP.
//
VmPtr->Ip += Size;
}
}

41
MdeModulePkg/Universal/EbcDxe/Ipf/EbcSupport.h
View File

@@ -1,41 +0,0 @@
/** @file
Definition of EBC Support function.
Copyright (c) 2006 - 2008, 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.
**/
#ifndef _IPF_EBC_SUPPORT_H_
#define _IPF_EBC_SUPPORT_H_
#define VM_STACK_SIZE (1024 * 32)
#define EBC_THUNK_SIZE 128
#define STACK_REMAIN_SIZE (1024 * 4)
//
// For code execution, thunks must be aligned on 16-byte boundary
//
#define EBC_THUNK_ALIGNMENT 16
//
// Opcodes for IPF instructions. We'll need to hand-create thunk code (stuffing
// bits) to insert a jump to the interpreter.
//
#define OPCODE_NOP (UINT64) 0x00008000000
#define OPCODE_BR_COND_SPTK_FEW (UINT64) 0x00100000000
#define OPCODE_MOV_BX_RX (UINT64) 0x00E00100000
//
// Opcode for MOVL instruction
//
#define MOVL_OPCODE 0x06
#endif