mirror of https://github.com/acidanthera/audk.git
423 lines
12 KiB
C
423 lines
12 KiB
C
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/** @file
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Fixes Intel Itanium(TM) specific relocation types.
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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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**/
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#include "BasePeCoffLibInternals.h"
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#define EXT_IMM64(Value, Address, Size, InstPos, ValPos) \
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Value |= (((UINT64)((*(Address) >> InstPos) & (((UINT64)1 << Size) - 1))) << ValPos)
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#define INS_IMM64(Value, Address, Size, InstPos, ValPos) \
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*(UINT32*)Address = (*(UINT32*)Address & ~(((1 << Size) - 1) << InstPos)) | \
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((UINT32)((((UINT64)Value >> ValPos) & (((UINT64)1 << Size) - 1))) << InstPos)
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#define IMM64_IMM7B_INST_WORD_X 3
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#define IMM64_IMM7B_SIZE_X 7
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#define IMM64_IMM7B_INST_WORD_POS_X 4
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#define IMM64_IMM7B_VAL_POS_X 0
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#define IMM64_IMM9D_INST_WORD_X 3
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#define IMM64_IMM9D_SIZE_X 9
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#define IMM64_IMM9D_INST_WORD_POS_X 18
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#define IMM64_IMM9D_VAL_POS_X 7
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#define IMM64_IMM5C_INST_WORD_X 3
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#define IMM64_IMM5C_SIZE_X 5
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#define IMM64_IMM5C_INST_WORD_POS_X 13
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#define IMM64_IMM5C_VAL_POS_X 16
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#define IMM64_IC_INST_WORD_X 3
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#define IMM64_IC_SIZE_X 1
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#define IMM64_IC_INST_WORD_POS_X 12
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#define IMM64_IC_VAL_POS_X 21
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#define IMM64_IMM41a_INST_WORD_X 1
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#define IMM64_IMM41a_SIZE_X 10
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#define IMM64_IMM41a_INST_WORD_POS_X 14
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#define IMM64_IMM41a_VAL_POS_X 22
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#define IMM64_IMM41b_INST_WORD_X 1
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#define IMM64_IMM41b_SIZE_X 8
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#define IMM64_IMM41b_INST_WORD_POS_X 24
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#define IMM64_IMM41b_VAL_POS_X 32
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#define IMM64_IMM41c_INST_WORD_X 2
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#define IMM64_IMM41c_SIZE_X 23
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#define IMM64_IMM41c_INST_WORD_POS_X 0
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#define IMM64_IMM41c_VAL_POS_X 40
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#define IMM64_SIGN_INST_WORD_X 3
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#define IMM64_SIGN_SIZE_X 1
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#define IMM64_SIGN_INST_WORD_POS_X 27
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#define IMM64_SIGN_VAL_POS_X 63
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/**
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Performs an Itanium-based specific relocation fixup.
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@param Reloc Pointer to the relocation record.
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@param Fixup Pointer to the address to fix up.
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@param FixupData Pointer to a buffer to log the fixups.
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@param Adjust The offset to adjust the fixup.
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@return Status code.
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**/
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RETURN_STATUS
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PeCoffLoaderRelocateImageEx (
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IN UINT16 *Reloc,
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IN OUT CHAR8 *Fixup,
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IN OUT CHAR8 **FixupData,
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IN UINT64 Adjust
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)
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{
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UINT64 *F64;
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UINT64 FixupVal;
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switch ((*Reloc) >> 12) {
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case EFI_IMAGE_REL_BASED_IA64_IMM64:
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//
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// Align it to bundle address before fixing up the
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// 64-bit immediate value of the movl instruction.
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//
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Fixup = (CHAR8 *)((UINTN) Fixup & (UINTN) ~(15));
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FixupVal = (UINT64)0;
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//
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// Extract the lower 32 bits of IMM64 from bundle
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//
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EXT_IMM64(FixupVal,
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(UINT32 *)Fixup + IMM64_IMM7B_INST_WORD_X,
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IMM64_IMM7B_SIZE_X,
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IMM64_IMM7B_INST_WORD_POS_X,
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IMM64_IMM7B_VAL_POS_X
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);
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EXT_IMM64(FixupVal,
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(UINT32 *)Fixup + IMM64_IMM9D_INST_WORD_X,
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IMM64_IMM9D_SIZE_X,
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IMM64_IMM9D_INST_WORD_POS_X,
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IMM64_IMM9D_VAL_POS_X
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);
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EXT_IMM64(FixupVal,
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(UINT32 *)Fixup + IMM64_IMM5C_INST_WORD_X,
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IMM64_IMM5C_SIZE_X,
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IMM64_IMM5C_INST_WORD_POS_X,
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IMM64_IMM5C_VAL_POS_X
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);
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EXT_IMM64(FixupVal,
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(UINT32 *)Fixup + IMM64_IC_INST_WORD_X,
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IMM64_IC_SIZE_X,
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IMM64_IC_INST_WORD_POS_X,
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IMM64_IC_VAL_POS_X
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);
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EXT_IMM64(FixupVal,
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(UINT32 *)Fixup + IMM64_IMM41a_INST_WORD_X,
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IMM64_IMM41a_SIZE_X,
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IMM64_IMM41a_INST_WORD_POS_X,
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IMM64_IMM41a_VAL_POS_X
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);
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//
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// Update 64-bit address
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//
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FixupVal += Adjust;
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//
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// Insert IMM64 into bundle
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//
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INS_IMM64(FixupVal,
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((UINT32 *)Fixup + IMM64_IMM7B_INST_WORD_X),
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IMM64_IMM7B_SIZE_X,
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IMM64_IMM7B_INST_WORD_POS_X,
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IMM64_IMM7B_VAL_POS_X
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);
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INS_IMM64(FixupVal,
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((UINT32 *)Fixup + IMM64_IMM9D_INST_WORD_X),
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IMM64_IMM9D_SIZE_X,
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IMM64_IMM9D_INST_WORD_POS_X,
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IMM64_IMM9D_VAL_POS_X
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);
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INS_IMM64(FixupVal,
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((UINT32 *)Fixup + IMM64_IMM5C_INST_WORD_X),
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IMM64_IMM5C_SIZE_X,
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IMM64_IMM5C_INST_WORD_POS_X,
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IMM64_IMM5C_VAL_POS_X
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);
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INS_IMM64(FixupVal,
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((UINT32 *)Fixup + IMM64_IC_INST_WORD_X),
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IMM64_IC_SIZE_X,
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IMM64_IC_INST_WORD_POS_X,
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IMM64_IC_VAL_POS_X
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);
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INS_IMM64(FixupVal,
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((UINT32 *)Fixup + IMM64_IMM41a_INST_WORD_X),
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IMM64_IMM41a_SIZE_X,
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IMM64_IMM41a_INST_WORD_POS_X,
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IMM64_IMM41a_VAL_POS_X
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);
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INS_IMM64(FixupVal,
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((UINT32 *)Fixup + IMM64_IMM41b_INST_WORD_X),
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IMM64_IMM41b_SIZE_X,
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IMM64_IMM41b_INST_WORD_POS_X,
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IMM64_IMM41b_VAL_POS_X
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);
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INS_IMM64(FixupVal,
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((UINT32 *)Fixup + IMM64_IMM41c_INST_WORD_X),
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IMM64_IMM41c_SIZE_X,
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IMM64_IMM41c_INST_WORD_POS_X,
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IMM64_IMM41c_VAL_POS_X
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);
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INS_IMM64(FixupVal,
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((UINT32 *)Fixup + IMM64_SIGN_INST_WORD_X),
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IMM64_SIGN_SIZE_X,
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IMM64_SIGN_INST_WORD_POS_X,
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IMM64_SIGN_VAL_POS_X
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);
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F64 = (UINT64 *) Fixup;
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if (*FixupData != NULL) {
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*FixupData = ALIGN_POINTER(*FixupData, sizeof(UINT64));
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*(UINT64 *)(*FixupData) = *F64;
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*FixupData = *FixupData + sizeof(UINT64);
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}
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break;
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default:
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return RETURN_UNSUPPORTED;
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}
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return RETURN_SUCCESS;
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}
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/**
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Returns TRUE if the machine type of PE/COFF image is supported. Supported
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does not mean the image can be executed it means the PE/COFF loader supports
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loading and relocating of the image type. It's up to the caller to support
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the entry point.
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This function implies the basic PE/COFF loader/relocator supports IA32, EBC,
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& X64 images. Calling the entry point in a correct mannor is up to the
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consumer of this library. This version also supports the special relocations
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for Itanium.
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@param Machine Machine type from the PE Header.
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@return TRUE if this PE/COFF loader can load the image
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**/
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BOOLEAN
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PeCoffLoaderImageFormatSupported (
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IN UINT16 Machine
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)
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{
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if ((Machine == EFI_IMAGE_MACHINE_IPF) || (Machine == EFI_IMAGE_MACHINE_IA32) ||
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(Machine == EFI_IMAGE_MACHINE_EBC) || (Machine == EFI_IMAGE_MACHINE_X64)) {
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return TRUE;
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}
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return FALSE;
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}
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/**
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ImageRead function that operates on a memory buffer whos base is passed into
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FileHandle.
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@param Reloc Ponter to baes of the input stream
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@param Fixup Offset to the start of the buffer
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@param FixupData Number of bytes to copy into the buffer
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@param Adjust Location to place results of read
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@retval RETURN_SUCCESS Data is read from FileOffset from the Handle into
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the buffer.
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**/
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RETURN_STATUS
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PeHotRelocateImageEx (
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IN UINT16 *Reloc,
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IN OUT CHAR8 *Fixup,
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IN OUT CHAR8 **FixupData,
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IN UINT64 Adjust
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)
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{
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UINT64 *F64;
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UINT64 FixupVal;
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switch ((*Reloc) >> 12) {
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case EFI_IMAGE_REL_BASED_DIR64:
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F64 = (UINT64 *) Fixup;
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*FixupData = ALIGN_POINTER (*FixupData, sizeof (UINT64));
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if (*(UINT64 *) (*FixupData) == *F64) {
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*F64 = *F64 + (UINT64) Adjust;
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}
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*FixupData = *FixupData + sizeof (UINT64);
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break;
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case EFI_IMAGE_REL_BASED_IA64_IMM64:
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F64 = (UINT64 *) Fixup;
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*FixupData = ALIGN_POINTER (*FixupData, sizeof (UINT64));
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if (*(UINT64 *) (*FixupData) == *F64) {
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//
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// Align it to bundle address before fixing up the
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// 64-bit immediate value of the movl instruction.
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//
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//
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Fixup = (CHAR8 *) ((UINT64) Fixup & (UINT64)~(15));
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FixupVal = (UINT64) 0;
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//
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// Extract the lower 32 bits of IMM64 from bundle
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//
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EXT_IMM64 (
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FixupVal,
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(UINT32 *) Fixup + IMM64_IMM7B_INST_WORD_X,
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IMM64_IMM7B_SIZE_X,
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IMM64_IMM7B_INST_WORD_POS_X,
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IMM64_IMM7B_VAL_POS_X
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);
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EXT_IMM64 (
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FixupVal,
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(UINT32 *) Fixup + IMM64_IMM9D_INST_WORD_X,
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IMM64_IMM9D_SIZE_X,
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IMM64_IMM9D_INST_WORD_POS_X,
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IMM64_IMM9D_VAL_POS_X
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);
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EXT_IMM64 (
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FixupVal,
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(UINT32 *) Fixup + IMM64_IMM5C_INST_WORD_X,
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IMM64_IMM5C_SIZE_X,
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IMM64_IMM5C_INST_WORD_POS_X,
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IMM64_IMM5C_VAL_POS_X
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);
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EXT_IMM64 (
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FixupVal,
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(UINT32 *) Fixup + IMM64_IC_INST_WORD_X,
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IMM64_IC_SIZE_X,
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IMM64_IC_INST_WORD_POS_X,
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IMM64_IC_VAL_POS_X
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);
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EXT_IMM64 (
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FixupVal,
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(UINT32 *) Fixup + IMM64_IMM41a_INST_WORD_X,
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IMM64_IMM41a_SIZE_X,
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IMM64_IMM41a_INST_WORD_POS_X,
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IMM64_IMM41a_VAL_POS_X
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);
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//
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// Update 64-bit address
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//
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FixupVal += Adjust;
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//
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// Insert IMM64 into bundle
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//
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INS_IMM64 (
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FixupVal,
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((UINT32 *) Fixup + IMM64_IMM7B_INST_WORD_X),
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IMM64_IMM7B_SIZE_X,
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IMM64_IMM7B_INST_WORD_POS_X,
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IMM64_IMM7B_VAL_POS_X
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);
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INS_IMM64 (
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FixupVal,
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((UINT32 *) Fixup + IMM64_IMM9D_INST_WORD_X),
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IMM64_IMM9D_SIZE_X,
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IMM64_IMM9D_INST_WORD_POS_X,
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IMM64_IMM9D_VAL_POS_X
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);
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|
INS_IMM64 (
|
||
|
|
FixupVal,
|
||
|
|
((UINT32 *) Fixup + IMM64_IMM5C_INST_WORD_X),
|
||
|
|
IMM64_IMM5C_SIZE_X,
|
||
|
|
IMM64_IMM5C_INST_WORD_POS_X,
|
||
|
|
IMM64_IMM5C_VAL_POS_X
|
||
|
|
);
|
||
|
|
|
||
|
|
INS_IMM64 (
|
||
|
|
FixupVal,
|
||
|
|
((UINT32 *) Fixup + IMM64_IC_INST_WORD_X),
|
||
|
|
IMM64_IC_SIZE_X,
|
||
|
|
IMM64_IC_INST_WORD_POS_X,
|
||
|
|
IMM64_IC_VAL_POS_X
|
||
|
|
);
|
||
|
|
|
||
|
|
INS_IMM64 (
|
||
|
|
FixupVal,
|
||
|
|
((UINT32 *) Fixup + IMM64_IMM41a_INST_WORD_X),
|
||
|
|
IMM64_IMM41a_SIZE_X,
|
||
|
|
IMM64_IMM41a_INST_WORD_POS_X,
|
||
|
|
IMM64_IMM41a_VAL_POS_X
|
||
|
|
);
|
||
|
|
|
||
|
|
INS_IMM64 (
|
||
|
|
FixupVal,
|
||
|
|
((UINT32 *) Fixup + IMM64_IMM41b_INST_WORD_X),
|
||
|
|
IMM64_IMM41b_SIZE_X,
|
||
|
|
IMM64_IMM41b_INST_WORD_POS_X,
|
||
|
|
IMM64_IMM41b_VAL_POS_X
|
||
|
|
);
|
||
|
|
|
||
|
|
INS_IMM64 (
|
||
|
|
FixupVal,
|
||
|
|
((UINT32 *) Fixup + IMM64_IMM41c_INST_WORD_X),
|
||
|
|
IMM64_IMM41c_SIZE_X,
|
||
|
|
IMM64_IMM41c_INST_WORD_POS_X,
|
||
|
|
IMM64_IMM41c_VAL_POS_X
|
||
|
|
);
|
||
|
|
|
||
|
|
INS_IMM64 (
|
||
|
|
FixupVal,
|
||
|
|
((UINT32 *) Fixup + IMM64_SIGN_INST_WORD_X),
|
||
|
|
IMM64_SIGN_SIZE_X,
|
||
|
|
IMM64_SIGN_INST_WORD_POS_X,
|
||
|
|
IMM64_SIGN_VAL_POS_X
|
||
|
|
);
|
||
|
|
|
||
|
|
*(UINT64 *) (*FixupData) = *F64;
|
||
|
|
}
|
||
|
|
|
||
|
|
*FixupData = *FixupData + sizeof (UINT64);
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
DEBUG ((EFI_D_ERROR, "PeHotRelocateEx:unknown fixed type\n"));
|
||
|
|
return RETURN_UNSUPPORTED;
|
||
|
|
}
|
||
|
|
|
||
|
|
return RETURN_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|