-/** @file
-
-Copyright (c) 2010, 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 "WinNtInclude.h"
-
-#ifndef __GNUC__
-#include <windows.h>
-#include <io.h>
-#endif
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <ctype.h>
-
-#include <Common/UefiBaseTypes.h>
-#include <IndustryStandard/PeImage.h>
-
-#include "PeCoffLib.h"
-#include "EfiUtilityMsgs.h"
-
-#include "GenFw.h"
-#include "ElfConvert.h"
-#include "Elf64Convert.h"
-
-STATIC
-VOID
-ScanSections64 (
- VOID
- );
-
-STATIC
-BOOLEAN
-WriteSections64 (
- SECTION_FILTER_TYPES FilterType
- );
-
-STATIC
-VOID
-WriteRelocations64 (
- VOID
- );
-
-STATIC
-VOID
-WriteDebug64 (
- VOID
- );
-
-STATIC
-VOID
-SetImageSize64 (
- VOID
- );
-
-STATIC
-VOID
-CleanUp64 (
- VOID
- );
-
-//
-// Rename ELF32 strucutres to common names to help when porting to ELF64.
-//
-typedef Elf64_Shdr Elf_Shdr;
-typedef Elf64_Ehdr Elf_Ehdr;
-typedef Elf64_Rel Elf_Rel;
-typedef Elf64_Rela Elf_Rela;
-typedef Elf64_Sym Elf_Sym;
-typedef Elf64_Phdr Elf_Phdr;
-typedef Elf64_Dyn Elf_Dyn;
-#define ELFCLASS ELFCLASS64
-#define ELF_R_TYPE(r) ELF64_R_TYPE(r)
-#define ELF_R_SYM(r) ELF64_R_SYM(r)
-
-//
-// Well known ELF structures.
-//
-STATIC Elf_Ehdr *mEhdr;
-STATIC Elf_Shdr *mShdrBase;
-STATIC Elf_Phdr *mPhdrBase;
-
-//
-// Coff information
-//
-STATIC const UINT32 mCoffAlignment = 0x20;
-
-//
-// PE section alignment.
-//
-STATIC const UINT16 mCoffNbrSections = 5;
-
-//
-// ELF sections to offset in Coff file.
-//
-STATIC UINT32 *mCoffSectionsOffset = NULL;
-
-//
-// Offsets in COFF file
-//
-STATIC UINT32 mNtHdrOffset;
-STATIC UINT32 mTextOffset;
-STATIC UINT32 mDataOffset;
-STATIC UINT32 mHiiRsrcOffset;
-STATIC UINT32 mRelocOffset;
-
-//
-// Initialization Function
-//
-BOOLEAN
-InitializeElf64 (
- UINT8 *FileBuffer,
- ELF_FUNCTION_TABLE *ElfFunctions
- )
-{
- //
- // Initialize data pointer and structures.
- //
- VerboseMsg ("Set EHDR");
- mEhdr = (Elf_Ehdr*) FileBuffer;
-
- //
- // Check the ELF64 specific header information.
- //
- VerboseMsg ("Check ELF64 Header Information");
- if (mEhdr->e_ident[EI_CLASS] != ELFCLASS64) {
- Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFCLASS64");
- return FALSE;
- }
- if (mEhdr->e_ident[EI_DATA] != ELFDATA2LSB) {
- Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFDATA2LSB");
- return FALSE;
- }
- if ((mEhdr->e_type != ET_EXEC) && (mEhdr->e_type != ET_DYN)) {
- Error (NULL, 0, 3000, "Unsupported", "ELF e_type not ET_EXEC or ET_DYN");
- return FALSE;
- }
- if (!((mEhdr->e_machine == EM_X86_64))) {
- Error (NULL, 0, 3000, "Unsupported", "ELF e_machine not EM_X86_64");
- return FALSE;
- }
- if (mEhdr->e_version != EV_CURRENT) {
- Error (NULL, 0, 3000, "Unsupported", "ELF e_version (%u) not EV_CURRENT (%d)", (unsigned) mEhdr->e_version, EV_CURRENT);
- return FALSE;
- }
-
- //
- // Update section header pointers
- //
- VerboseMsg ("Update Header Pointers");
- mShdrBase = (Elf_Shdr *)((UINT8 *)mEhdr + mEhdr->e_shoff);
- mPhdrBase = (Elf_Phdr *)((UINT8 *)mEhdr + mEhdr->e_phoff);
-
- //
- // Create COFF Section offset buffer and zero.
- //
- VerboseMsg ("Create COFF Section Offset Buffer");
- mCoffSectionsOffset = (UINT32 *)malloc(mEhdr->e_shnum * sizeof (UINT32));
- memset(mCoffSectionsOffset, 0, mEhdr->e_shnum * sizeof(UINT32));
-
- //
- // Fill in function pointers.
- //
- VerboseMsg ("Fill in Function Pointers");
- ElfFunctions->ScanSections = ScanSections64;
- ElfFunctions->WriteSections = WriteSections64;
- ElfFunctions->WriteRelocations = WriteRelocations64;
- ElfFunctions->WriteDebug = WriteDebug64;
- ElfFunctions->SetImageSize = SetImageSize64;
- ElfFunctions->CleanUp = CleanUp64;
-
- return TRUE;
-}
-
-
-//
-// Header by Index functions
-//
-STATIC
-Elf_Shdr*
-GetShdrByIndex (
- UINT32 Num
- )
-{
- if (Num >= mEhdr->e_shnum)
- return NULL;
- return (Elf_Shdr*)((UINT8*)mShdrBase + Num * mEhdr->e_shentsize);
-}
-
-STATIC
-UINT32
-CoffAlign (
- UINT32 Offset
- )
-{
- return (Offset + mCoffAlignment - 1) & ~(mCoffAlignment - 1);
-}
-
-//
-// filter functions
-//
-STATIC
-BOOLEAN
-IsTextShdr (
- Elf_Shdr *Shdr
- )
-{
- return (BOOLEAN) ((Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == SHF_ALLOC);
-}
-
-STATIC
-BOOLEAN
-IsHiiRsrcShdr (
- Elf_Shdr *Shdr
- )
-{
- Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);
-
- return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_HII_SECTION_NAME) == 0);
-}
-
-STATIC
-BOOLEAN
-IsDataShdr (
- Elf_Shdr *Shdr
- )
-{
- if (IsHiiRsrcShdr(Shdr)) {
- return FALSE;
- }
- return (BOOLEAN) (Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == (SHF_ALLOC | SHF_WRITE);
-}
-
-//
-// Elf functions interface implementation
-//
-
-STATIC
-VOID
-ScanSections64 (
- VOID
- )
-{
- UINT32 i;
- EFI_IMAGE_DOS_HEADER *DosHdr;
- EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
- UINT32 CoffEntry;
-
- CoffEntry = 0;
- mCoffOffset = 0;
-
- //
- // Coff file start with a DOS header.
- //
- mCoffOffset = sizeof(EFI_IMAGE_DOS_HEADER) + 0x40;
- mNtHdrOffset = mCoffOffset;
- switch (mEhdr->e_machine) {
- case EM_X86_64:
- case EM_IA_64:
- mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64);
- break;
- default:
- VerboseMsg ("%s unknown e_machine type. Assume X64", (UINTN)mEhdr->e_machine);
- mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64);
- break;
- }
-
- mTableOffset = mCoffOffset;
- mCoffOffset += mCoffNbrSections * sizeof(EFI_IMAGE_SECTION_HEADER);
-
- //
- // First text sections.
- //
- mCoffOffset = CoffAlign(mCoffOffset);
- mTextOffset = mCoffOffset;
- for (i = 0; i < mEhdr->e_shnum; i++) {
- Elf_Shdr *shdr = GetShdrByIndex(i);
- if (IsTextShdr(shdr)) {
- if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
- // the alignment field is valid
- if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
- // if the section address is aligned we must align PE/COFF
- mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1));
- } else if ((shdr->sh_addr % shdr->sh_addralign) != (mCoffOffset % shdr->sh_addralign)) {
- // ARM RVCT tools have behavior outside of the ELF specification to try
- // and make images smaller. If sh_addr is not aligned to sh_addralign
- // then the section needs to preserve sh_addr MOD sh_addralign.
- // Normally doing nothing here works great.
- Error (NULL, 0, 3000, "Invalid", "Unsupported section alignment.");
- }
- }
-
- /* Relocate entry. */
- if ((mEhdr->e_entry >= shdr->sh_addr) &&
- (mEhdr->e_entry < shdr->sh_addr + shdr->sh_size)) {
- CoffEntry = (UINT32) (mCoffOffset + mEhdr->e_entry - shdr->sh_addr);
- }
- mCoffSectionsOffset[i] = mCoffOffset;
- mCoffOffset += (UINT32) shdr->sh_size;
- }
- }
-
- if (mEhdr->e_machine != EM_ARM) {
- mCoffOffset = CoffAlign(mCoffOffset);
- }
-
- //
- // Then data sections.
- //
- mDataOffset = mCoffOffset;
- for (i = 0; i < mEhdr->e_shnum; i++) {
- Elf_Shdr *shdr = GetShdrByIndex(i);
- if (IsDataShdr(shdr)) {
- if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
- // the alignment field is valid
- if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
- // if the section address is aligned we must align PE/COFF
- mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1));
- } else if ((shdr->sh_addr % shdr->sh_addralign) != (mCoffOffset % shdr->sh_addralign)) {
- // ARM RVCT tools have behavior outside of the ELF specification to try
- // and make images smaller. If sh_addr is not aligned to sh_addralign
- // then the section needs to preserve sh_addr MOD sh_addralign.
- // Normally doing nothing here works great.
- Error (NULL, 0, 3000, "Invalid", "Unsupported section alignment.");
- }
- }
- mCoffSectionsOffset[i] = mCoffOffset;
- mCoffOffset += (UINT32) shdr->sh_size;
- }
- }
- mCoffOffset = CoffAlign(mCoffOffset);
-
- //
- // The HII resource sections.
- //
- mHiiRsrcOffset = mCoffOffset;
- for (i = 0; i < mEhdr->e_shnum; i++) {
- Elf_Shdr *shdr = GetShdrByIndex(i);
- if (IsHiiRsrcShdr(shdr)) {
- if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {
- // the alignment field is valid
- if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {
- // if the section address is aligned we must align PE/COFF
- mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1));
- } else if ((shdr->sh_addr % shdr->sh_addralign) != (mCoffOffset % shdr->sh_addralign)) {
- // ARM RVCT tools have behavior outside of the ELF specification to try
- // and make images smaller. If sh_addr is not aligned to sh_addralign
- // then the section needs to preserve sh_addr MOD sh_addralign.
- // Normally doing nothing here works great.
- Error (NULL, 0, 3000, "Invalid", "Unsupported section alignment.");
- }
- }
- if (shdr->sh_size != 0) {
- mCoffSectionsOffset[i] = mCoffOffset;
- mCoffOffset += (UINT32) shdr->sh_size;
- mCoffOffset = CoffAlign(mCoffOffset);
- SetHiiResourceHeader ((UINT8*) mEhdr + shdr->sh_offset, mHiiRsrcOffset);
- }
- break;
- }
- }
-
- mRelocOffset = mCoffOffset;
-
- //
- // Allocate base Coff file. Will be expanded later for relocations.
- //
- mCoffFile = (UINT8 *)malloc(mCoffOffset);
- memset(mCoffFile, 0, mCoffOffset);
-
- //
- // Fill headers.
- //
- DosHdr = (EFI_IMAGE_DOS_HEADER *)mCoffFile;
- DosHdr->e_magic = EFI_IMAGE_DOS_SIGNATURE;
- DosHdr->e_lfanew = mNtHdrOffset;
-
- NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION*)(mCoffFile + mNtHdrOffset);
-
- NtHdr->Pe32Plus.Signature = EFI_IMAGE_NT_SIGNATURE;
-
- switch (mEhdr->e_machine) {
- case EM_X86_64:
- NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_X64;
- NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;
- break;
- case EM_IA_64:
- NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_IPF;
- NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;
- break;
- default:
- VerboseMsg ("%s unknown e_machine type. Assume X64", (UINTN)mEhdr->e_machine);
- NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_X64;
- NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;
- }
-
- NtHdr->Pe32Plus.FileHeader.NumberOfSections = mCoffNbrSections;
- NtHdr->Pe32Plus.FileHeader.TimeDateStamp = (UINT32) time(NULL);
- mImageTimeStamp = NtHdr->Pe32Plus.FileHeader.TimeDateStamp;
- NtHdr->Pe32Plus.FileHeader.PointerToSymbolTable = 0;
- NtHdr->Pe32Plus.FileHeader.NumberOfSymbols = 0;
- NtHdr->Pe32Plus.FileHeader.SizeOfOptionalHeader = sizeof(NtHdr->Pe32Plus.OptionalHeader);
- NtHdr->Pe32Plus.FileHeader.Characteristics = EFI_IMAGE_FILE_EXECUTABLE_IMAGE
- | EFI_IMAGE_FILE_LINE_NUMS_STRIPPED
- | EFI_IMAGE_FILE_LOCAL_SYMS_STRIPPED
- | EFI_IMAGE_FILE_LARGE_ADDRESS_AWARE;
-
- NtHdr->Pe32Plus.OptionalHeader.SizeOfCode = mDataOffset - mTextOffset;
- NtHdr->Pe32Plus.OptionalHeader.SizeOfInitializedData = mRelocOffset - mDataOffset;
- NtHdr->Pe32Plus.OptionalHeader.SizeOfUninitializedData = 0;
- NtHdr->Pe32Plus.OptionalHeader.AddressOfEntryPoint = CoffEntry;
-
- NtHdr->Pe32Plus.OptionalHeader.BaseOfCode = mTextOffset;
-
- NtHdr->Pe32Plus.OptionalHeader.ImageBase = 0;
- NtHdr->Pe32Plus.OptionalHeader.SectionAlignment = mCoffAlignment;
- NtHdr->Pe32Plus.OptionalHeader.FileAlignment = mCoffAlignment;
- NtHdr->Pe32Plus.OptionalHeader.SizeOfImage = 0;
-
- NtHdr->Pe32Plus.OptionalHeader.SizeOfHeaders = mTextOffset;
- NtHdr->Pe32Plus.OptionalHeader.NumberOfRvaAndSizes = EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES;
-
- //
- // Section headers.
- //
- if ((mDataOffset - mTextOffset) > 0) {
- CreateSectionHeader (".text", mTextOffset, mDataOffset - mTextOffset,
- EFI_IMAGE_SCN_CNT_CODE
- | EFI_IMAGE_SCN_MEM_EXECUTE
- | EFI_IMAGE_SCN_MEM_READ);
- } else {
- // Don't make a section of size 0.
- NtHdr->Pe32Plus.FileHeader.NumberOfSections--;
- }
-
- if ((mHiiRsrcOffset - mDataOffset) > 0) {
- CreateSectionHeader (".data", mDataOffset, mHiiRsrcOffset - mDataOffset,
- EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
- | EFI_IMAGE_SCN_MEM_WRITE
- | EFI_IMAGE_SCN_MEM_READ);
- } else {
- // Don't make a section of size 0.
- NtHdr->Pe32Plus.FileHeader.NumberOfSections--;
- }
-
- if ((mRelocOffset - mHiiRsrcOffset) > 0) {
- CreateSectionHeader (".rsrc", mHiiRsrcOffset, mRelocOffset - mHiiRsrcOffset,
- EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
- | EFI_IMAGE_SCN_MEM_READ);
-
- NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].Size = mRelocOffset - mHiiRsrcOffset;
- NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress = mHiiRsrcOffset;
- } else {
- // Don't make a section of size 0.
- NtHdr->Pe32Plus.FileHeader.NumberOfSections--;
- }
-
-}
-
-STATIC
-BOOLEAN
-WriteSections64 (
- SECTION_FILTER_TYPES FilterType
- )
-{
- UINT32 Idx;
- Elf_Shdr *SecShdr;
- UINT32 SecOffset;
- BOOLEAN (*Filter)(Elf_Shdr *);
-
- //
- // Initialize filter pointer
- //
- switch (FilterType) {
- case SECTION_TEXT:
- Filter = IsTextShdr;
- break;
- case SECTION_HII:
- Filter = IsHiiRsrcShdr;
- break;
- case SECTION_DATA:
- Filter = IsDataShdr;
- break;
- default:
- return FALSE;
- }
-
- //
- // First: copy sections.
- //
- for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {
- Elf_Shdr *Shdr = GetShdrByIndex(Idx);
- if ((*Filter)(Shdr)) {
- switch (Shdr->sh_type) {
- case SHT_PROGBITS:
- /* Copy. */
- memcpy(mCoffFile + mCoffSectionsOffset[Idx],
- (UINT8*)mEhdr + Shdr->sh_offset,
- (size_t) Shdr->sh_size);
- break;
-
- case SHT_NOBITS:
- memset(mCoffFile + mCoffSectionsOffset[Idx], 0, (size_t) Shdr->sh_size);
- break;
-
- default:
- //
- // Ignore for unkown section type.
- //
- VerboseMsg ("%s unknown section type %x. We directly copy this section into Coff file", mInImageName, (unsigned)Shdr->sh_type);
- break;
- }
- }
- }
-
- //
- // Second: apply relocations.
- //
- VerboseMsg ("Applying Relocations...");
- for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {
- Elf_Shdr *RelShdr = GetShdrByIndex(Idx);
- if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) {
- continue;
- }
- SecShdr = GetShdrByIndex(RelShdr->sh_info);
- SecOffset = mCoffSectionsOffset[RelShdr->sh_info];
- if (RelShdr->sh_type == SHT_RELA && (*Filter)(SecShdr)) {
- UINT64 RelIdx;
- Elf_Shdr *SymtabShdr = GetShdrByIndex(RelShdr->sh_link);
- UINT8 *Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset;
- for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += (UINT32) RelShdr->sh_entsize) {
- Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);
- Elf_Sym *Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize);
- Elf_Shdr *SymShdr;
- UINT8 *Targ;
-
- if (Sym->st_shndx == SHN_UNDEF
- || Sym->st_shndx == SHN_ABS
- || Sym->st_shndx > mEhdr->e_shnum) {
- Error (NULL, 0, 3000, "Invalid", "%s bad symbol definition.", mInImageName);
- }
- SymShdr = GetShdrByIndex(Sym->st_shndx);
-
- //
- // Note: r_offset in a memory address.
- // Convert it to a pointer in the coff file.
- //
- Targ = mCoffFile + SecOffset + (Rel->r_offset - SecShdr->sh_addr);
-
- if (mEhdr->e_machine == EM_X86_64) {
- switch (ELF_R_TYPE(Rel->r_info)) {
- case R_X86_64_NONE:
- break;
- case R_X86_64_64:
- //
- // Absolute relocation.
- //
- VerboseMsg ("R_X86_64_64");
- VerboseMsg ("Offset: 0x%08X, Addend: 0x%016LX",
- (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),
- *(UINT64 *)Targ);
- *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
- VerboseMsg ("Relocation: 0x%016LX", *(UINT64*)Targ);
- break;
- case R_X86_64_32:
- VerboseMsg ("R_X86_64_32");
- VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",
- (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),
- *(UINT32 *)Targ);
- *(UINT32 *)Targ = (UINT32)((UINT64)(*(UINT32 *)Targ) - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]);
- VerboseMsg ("Relocation: 0x%08X", *(UINT32*)Targ);
- break;
- case R_X86_64_32S:
- VerboseMsg ("R_X86_64_32S");
- VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",
- (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),
- *(UINT32 *)Targ);
- *(INT32 *)Targ = (INT32)((INT64)(*(INT32 *)Targ) - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]);
- VerboseMsg ("Relocation: 0x%08X", *(UINT32*)Targ);
- break;
- case R_X86_64_PC32:
- //
- // Relative relocation: Symbol - Ip + Addend
- //
- VerboseMsg ("R_X86_64_PC32");
- VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",
- (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),
- *(UINT32 *)Targ);
- *(UINT32 *)Targ = (UINT32) (*(UINT32 *)Targ
- + (mCoffSectionsOffset[Sym->st_shndx] - SymShdr->sh_addr)
- - (SecOffset - SecShdr->sh_addr));
- VerboseMsg ("Relocation: 0x%08X", *(UINT32 *)Targ);
- break;
- default:
- Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_X86_64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
- }
- } else {
- Error (NULL, 0, 3000, "Invalid", "Not EM_X86_X64");
- }
- }
- }
- }
-
- return TRUE;
-}
-
-STATIC
-VOID
-WriteRelocations64 (
- VOID
- )
-{
- UINT32 Index;
- EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
- EFI_IMAGE_DATA_DIRECTORY *Dir;
- BOOLEAN FoundRelocations;
- Elf_Sym *Sym;
- Elf_Shdr *SymtabShdr;
- UINT8 *Symtab;
-
-
- for (Index = 0, FoundRelocations = FALSE; Index < mEhdr->e_shnum; Index++) {
- Elf_Shdr *RelShdr = GetShdrByIndex(Index);
- if ((RelShdr->sh_type == SHT_REL) || (RelShdr->sh_type == SHT_RELA)) {
- Elf_Shdr *SecShdr = GetShdrByIndex (RelShdr->sh_info);
- if (IsTextShdr(SecShdr) || IsDataShdr(SecShdr)) {
- UINT64 RelIdx;
-
- SymtabShdr = GetShdrByIndex (RelShdr->sh_link);
- Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset;
- FoundRelocations = TRUE;
- for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += RelShdr->sh_entsize) {
- Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);
- Elf_Shdr *SymShdr;
-
- Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize);
- SymShdr = GetShdrByIndex (Sym->st_shndx);
-
- if (mEhdr->e_machine == EM_X86_64) {
- switch (ELF_R_TYPE(Rel->r_info)) {
- case R_X86_64_NONE:
- case R_X86_64_PC32:
- break;
- case R_X86_64_64:
- VerboseMsg ("EFI_IMAGE_REL_BASED_DIR64 Offset: 0x%08X",
- mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr));
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_DIR64);
- break;
- case R_X86_64_32S:
- case R_X86_64_32:
- VerboseMsg ("EFI_IMAGE_REL_BASED_HIGHLOW Offset: 0x%08X",
- mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr));
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_HIGHLOW);
- break;
- default:
- Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_X86_64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
- }
- } else {
- Error (NULL, 0, 3000, "Not Supported", "This tool does not support relocations for ELF with e_machine %u (processor type).", (unsigned) mEhdr->e_machine);
- }
- }
- }
- }
- }
-
- //
- // Pad by adding empty entries.
- //
- while (mCoffOffset & (mCoffAlignment - 1)) {
- CoffAddFixupEntry(0);
- }
-
- NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
- Dir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];
- Dir->Size = mCoffOffset - mRelocOffset;
- if (Dir->Size == 0) {
- // If no relocations, null out the directory entry and don't add the .reloc section
- Dir->VirtualAddress = 0;
- NtHdr->Pe32Plus.FileHeader.NumberOfSections--;
- } else {
- Dir->VirtualAddress = mRelocOffset;
- CreateSectionHeader (".reloc", mRelocOffset, mCoffOffset - mRelocOffset,
- EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
- | EFI_IMAGE_SCN_MEM_DISCARDABLE
- | EFI_IMAGE_SCN_MEM_READ);
- }
-}
-
-STATIC
-VOID
-WriteDebug64 (
- VOID
- )
-{
- UINT32 Len;
- UINT32 DebugOffset;
- EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
- EFI_IMAGE_DATA_DIRECTORY *DataDir;
- EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *Dir;
- EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY *Nb10;
-
- Len = strlen(mInImageName) + 1;
- DebugOffset = mCoffOffset;
-
- mCoffOffset += sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY)
- + sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY)
- + Len;
- mCoffOffset = CoffAlign(mCoffOffset);
-
- mCoffFile = realloc(mCoffFile, mCoffOffset);
- memset(mCoffFile + DebugOffset, 0, mCoffOffset - DebugOffset);
-
- Dir = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY*)(mCoffFile + DebugOffset);
- Dir->Type = EFI_IMAGE_DEBUG_TYPE_CODEVIEW;
- Dir->SizeOfData = sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) + Len;
- Dir->RVA = DebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
- Dir->FileOffset = DebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
-
- Nb10 = (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY*)(Dir + 1);
- Nb10->Signature = CODEVIEW_SIGNATURE_NB10;
- strcpy ((char *)(Nb10 + 1), mInImageName);
-
-
- NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
- DataDir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG];
- DataDir->VirtualAddress = DebugOffset;
- DataDir->Size = mCoffOffset - DebugOffset;
- if (DataDir->Size == 0) {
- // If no debug, null out the directory entry and don't add the .debug section
- DataDir->VirtualAddress = 0;
- NtHdr->Pe32Plus.FileHeader.NumberOfSections--;
- } else {
- DataDir->VirtualAddress = DebugOffset;
- CreateSectionHeader (".debug", DebugOffset, mCoffOffset - DebugOffset,
- EFI_IMAGE_SCN_CNT_INITIALIZED_DATA
- | EFI_IMAGE_SCN_MEM_DISCARDABLE
- | EFI_IMAGE_SCN_MEM_READ);
-
- }
-}
-
-STATIC
-VOID
-SetImageSize64 (
- VOID
- )
-{
- EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
-
- //
- // Set image size
- //
- NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);
- NtHdr->Pe32Plus.OptionalHeader.SizeOfImage = mCoffOffset;
-}
-
-STATIC
-VOID
-CleanUp64 (
- VOID
- )
-{
- if (mCoffSectionsOffset != NULL) {
- free (mCoffSectionsOffset);
- }
-}
-
-
+/** @file\r
+Elf64 convert solution\r
+\r
+Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>\r
+Portions copyright (c) 2013-2014, ARM Ltd. All rights reserved.<BR>\r
+\r
+This program and the accompanying materials are licensed and made available\r
+under the terms and conditions of the BSD License which accompanies this\r
+distribution. The full text of the license may be found at\r
+http://opensource.org/licenses/bsd-license.php\r
+\r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+#include "WinNtInclude.h"\r
+\r
+#ifndef __GNUC__\r
+#include <windows.h>\r
+#include <io.h>\r
+#endif\r
+#include <assert.h>\r
+#include <stdio.h>\r
+#include <stdlib.h>\r
+#include <string.h>\r
+#include <time.h>\r
+#include <ctype.h>\r
+\r
+#include <Common/UefiBaseTypes.h>\r
+#include <IndustryStandard/PeImage.h>\r
+\r
+#include "PeCoffLib.h"\r
+#include "EfiUtilityMsgs.h"\r
+\r
+#include "GenFw.h"\r
+#include "ElfConvert.h"\r
+#include "Elf64Convert.h"\r
+\r
+STATIC\r
+VOID\r
+ScanSections64 (\r
+ VOID\r
+ );\r
+\r
+STATIC\r
+BOOLEAN\r
+WriteSections64 (\r
+ SECTION_FILTER_TYPES FilterType\r
+ );\r
+\r
+STATIC\r
+VOID\r
+WriteRelocations64 (\r
+ VOID\r
+ );\r
+\r
+STATIC\r
+VOID\r
+WriteDebug64 (\r
+ VOID\r
+ );\r
+\r
+STATIC\r
+VOID\r
+SetImageSize64 (\r
+ VOID\r
+ );\r
+\r
+STATIC\r
+VOID\r
+CleanUp64 (\r
+ VOID\r
+ );\r
+\r
+//\r
+// Rename ELF32 strucutres to common names to help when porting to ELF64.\r
+//\r
+typedef Elf64_Shdr Elf_Shdr;\r
+typedef Elf64_Ehdr Elf_Ehdr;\r
+typedef Elf64_Rel Elf_Rel;\r
+typedef Elf64_Rela Elf_Rela;\r
+typedef Elf64_Sym Elf_Sym;\r
+typedef Elf64_Phdr Elf_Phdr;\r
+typedef Elf64_Dyn Elf_Dyn;\r
+#define ELFCLASS ELFCLASS64\r
+#define ELF_R_TYPE(r) ELF64_R_TYPE(r)\r
+#define ELF_R_SYM(r) ELF64_R_SYM(r)\r
+\r
+//\r
+// Well known ELF structures.\r
+//\r
+STATIC Elf_Ehdr *mEhdr;\r
+STATIC Elf_Shdr *mShdrBase;\r
+STATIC Elf_Phdr *mPhdrBase;\r
+\r
+//\r
+// GOT information\r
+//\r
+STATIC Elf_Shdr *mGOTShdr = NULL;\r
+STATIC UINT32 mGOTShindex = 0;\r
+STATIC UINT32 *mGOTCoffEntries = NULL;\r
+STATIC UINT32 mGOTMaxCoffEntries = 0;\r
+STATIC UINT32 mGOTNumCoffEntries = 0;\r
+\r
+//\r
+// Coff information\r
+//\r
+STATIC UINT32 mCoffAlignment = 0x20;\r
+\r
+//\r
+// PE section alignment.\r
+//\r
+STATIC const UINT16 mCoffNbrSections = 4;\r
+\r
+//\r
+// ELF sections to offset in Coff file.\r
+//\r
+STATIC UINT32 *mCoffSectionsOffset = NULL;\r
+\r
+//\r
+// Offsets in COFF file\r
+//\r
+STATIC UINT32 mNtHdrOffset;\r
+STATIC UINT32 mTextOffset;\r
+STATIC UINT32 mDataOffset;\r
+STATIC UINT32 mHiiRsrcOffset;\r
+STATIC UINT32 mRelocOffset;\r
+STATIC UINT32 mDebugOffset;\r
+\r
+//\r
+// Initialization Function\r
+//\r
+BOOLEAN\r
+InitializeElf64 (\r
+ UINT8 *FileBuffer,\r
+ ELF_FUNCTION_TABLE *ElfFunctions\r
+ )\r
+{\r
+ //\r
+ // Initialize data pointer and structures.\r
+ //\r
+ VerboseMsg ("Set EHDR");\r
+ mEhdr = (Elf_Ehdr*) FileBuffer;\r
+\r
+ //\r
+ // Check the ELF64 specific header information.\r
+ //\r
+ VerboseMsg ("Check ELF64 Header Information");\r
+ if (mEhdr->e_ident[EI_CLASS] != ELFCLASS64) {\r
+ Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFCLASS64");\r
+ return FALSE;\r
+ }\r
+ if (mEhdr->e_ident[EI_DATA] != ELFDATA2LSB) {\r
+ Error (NULL, 0, 3000, "Unsupported", "ELF EI_DATA not ELFDATA2LSB");\r
+ return FALSE;\r
+ }\r
+ if ((mEhdr->e_type != ET_EXEC) && (mEhdr->e_type != ET_DYN)) {\r
+ Error (NULL, 0, 3000, "Unsupported", "ELF e_type not ET_EXEC or ET_DYN");\r
+ return FALSE;\r
+ }\r
+ if (!((mEhdr->e_machine == EM_X86_64) || (mEhdr->e_machine == EM_AARCH64))) {\r
+ Error (NULL, 0, 3000, "Unsupported", "ELF e_machine not EM_X86_64 or EM_AARCH64");\r
+ return FALSE;\r
+ }\r
+ if (mEhdr->e_version != EV_CURRENT) {\r
+ Error (NULL, 0, 3000, "Unsupported", "ELF e_version (%u) not EV_CURRENT (%d)", (unsigned) mEhdr->e_version, EV_CURRENT);\r
+ return FALSE;\r
+ }\r
+\r
+ //\r
+ // Update section header pointers\r
+ //\r
+ VerboseMsg ("Update Header Pointers");\r
+ mShdrBase = (Elf_Shdr *)((UINT8 *)mEhdr + mEhdr->e_shoff);\r
+ mPhdrBase = (Elf_Phdr *)((UINT8 *)mEhdr + mEhdr->e_phoff);\r
+\r
+ //\r
+ // Create COFF Section offset buffer and zero.\r
+ //\r
+ VerboseMsg ("Create COFF Section Offset Buffer");\r
+ mCoffSectionsOffset = (UINT32 *)malloc(mEhdr->e_shnum * sizeof (UINT32));\r
+ if (mCoffSectionsOffset == NULL) {\r
+ Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");\r
+ return FALSE;\r
+ }\r
+ memset(mCoffSectionsOffset, 0, mEhdr->e_shnum * sizeof(UINT32));\r
+\r
+ //\r
+ // Fill in function pointers.\r
+ //\r
+ VerboseMsg ("Fill in Function Pointers");\r
+ ElfFunctions->ScanSections = ScanSections64;\r
+ ElfFunctions->WriteSections = WriteSections64;\r
+ ElfFunctions->WriteRelocations = WriteRelocations64;\r
+ ElfFunctions->WriteDebug = WriteDebug64;\r
+ ElfFunctions->SetImageSize = SetImageSize64;\r
+ ElfFunctions->CleanUp = CleanUp64;\r
+\r
+ return TRUE;\r
+}\r
+\r
+\r
+//\r
+// Header by Index functions\r
+//\r
+STATIC\r
+Elf_Shdr*\r
+GetShdrByIndex (\r
+ UINT32 Num\r
+ )\r
+{\r
+ if (Num >= mEhdr->e_shnum) {\r
+ Error (NULL, 0, 3000, "Invalid", "GetShdrByIndex: Index %u is too high.", Num);\r
+ exit(EXIT_FAILURE);\r
+ }\r
+\r
+ return (Elf_Shdr*)((UINT8*)mShdrBase + Num * mEhdr->e_shentsize);\r
+}\r
+\r
+STATIC\r
+UINT32\r
+CoffAlign (\r
+ UINT32 Offset\r
+ )\r
+{\r
+ return (Offset + mCoffAlignment - 1) & ~(mCoffAlignment - 1);\r
+}\r
+\r
+STATIC\r
+UINT32\r
+DebugRvaAlign (\r
+ UINT32 Offset\r
+ )\r
+{\r
+ return (Offset + 3) & ~3;\r
+}\r
+\r
+//\r
+// filter functions\r
+//\r
+STATIC\r
+BOOLEAN\r
+IsTextShdr (\r
+ Elf_Shdr *Shdr\r
+ )\r
+{\r
+ return (BOOLEAN) ((Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == SHF_ALLOC);\r
+}\r
+\r
+STATIC\r
+BOOLEAN\r
+IsHiiRsrcShdr (\r
+ Elf_Shdr *Shdr\r
+ )\r
+{\r
+ Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);\r
+\r
+ return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_HII_SECTION_NAME) == 0);\r
+}\r
+\r
+STATIC\r
+BOOLEAN\r
+IsDataShdr (\r
+ Elf_Shdr *Shdr\r
+ )\r
+{\r
+ if (IsHiiRsrcShdr(Shdr)) {\r
+ return FALSE;\r
+ }\r
+ return (BOOLEAN) (Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) == (SHF_ALLOC | SHF_WRITE);\r
+}\r
+\r
+STATIC\r
+BOOLEAN\r
+IsStrtabShdr (\r
+ Elf_Shdr *Shdr\r
+ )\r
+{\r
+ Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);\r
+\r
+ return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_STRTAB_SECTION_NAME) == 0);\r
+}\r
+\r
+STATIC\r
+Elf_Shdr *\r
+FindStrtabShdr (\r
+ VOID\r
+ )\r
+{\r
+ UINT32 i;\r
+ for (i = 0; i < mEhdr->e_shnum; i++) {\r
+ Elf_Shdr *shdr = GetShdrByIndex(i);\r
+ if (IsStrtabShdr(shdr)) {\r
+ return shdr;\r
+ }\r
+ }\r
+ return NULL;\r
+}\r
+\r
+STATIC\r
+const UINT8 *\r
+GetSymName (\r
+ Elf_Sym *Sym\r
+ )\r
+{\r
+ Elf_Shdr *StrtabShdr;\r
+ UINT8 *StrtabContents;\r
+ BOOLEAN foundEnd;\r
+ UINT32 i;\r
+\r
+ if (Sym->st_name == 0) {\r
+ return NULL;\r
+ }\r
+\r
+ StrtabShdr = FindStrtabShdr();\r
+ if (StrtabShdr == NULL) {\r
+ return NULL;\r
+ }\r
+\r
+ assert(Sym->st_name < StrtabShdr->sh_size);\r
+\r
+ StrtabContents = (UINT8*)mEhdr + StrtabShdr->sh_offset;\r
+\r
+ foundEnd = FALSE;\r
+ for (i= Sym->st_name; (i < StrtabShdr->sh_size) && !foundEnd; i++) {\r
+ foundEnd = (BOOLEAN)(StrtabContents[i] == 0);\r
+ }\r
+ assert(foundEnd);\r
+\r
+ return StrtabContents + Sym->st_name;\r
+}\r
+\r
+//\r
+// Find the ELF section hosting the GOT from an ELF Rva\r
+// of a single GOT entry. Normally, GOT is placed in\r
+// ELF .text section, so assume once we find in which\r
+// section the GOT is, all GOT entries are there, and\r
+// just verify this.\r
+//\r
+STATIC\r
+VOID\r
+FindElfGOTSectionFromGOTEntryElfRva (\r
+ Elf64_Addr GOTEntryElfRva\r
+ )\r
+{\r
+ UINT32 i;\r
+ if (mGOTShdr != NULL) {\r
+ if (GOTEntryElfRva >= mGOTShdr->sh_addr &&\r
+ GOTEntryElfRva < mGOTShdr->sh_addr + mGOTShdr->sh_size) {\r
+ return;\r
+ }\r
+ Error (NULL, 0, 3000, "Unsupported", "FindElfGOTSectionFromGOTEntryElfRva: GOT entries found in multiple sections.");\r
+ exit(EXIT_FAILURE);\r
+ }\r
+ for (i = 0; i < mEhdr->e_shnum; i++) {\r
+ Elf_Shdr *shdr = GetShdrByIndex(i);\r
+ if (GOTEntryElfRva >= shdr->sh_addr &&\r
+ GOTEntryElfRva < shdr->sh_addr + shdr->sh_size) {\r
+ mGOTShdr = shdr;\r
+ mGOTShindex = i;\r
+ return;\r
+ }\r
+ }\r
+ Error (NULL, 0, 3000, "Invalid", "FindElfGOTSectionFromGOTEntryElfRva: ElfRva 0x%016LX for GOT entry not found in any section.", GOTEntryElfRva);\r
+ exit(EXIT_FAILURE);\r
+}\r
+\r
+//\r
+// Stores locations of GOT entries in COFF image.\r
+// Returns TRUE if GOT entry is new.\r
+// Simple implementation as number of GOT\r
+// entries is expected to be low.\r
+//\r
+\r
+STATIC\r
+BOOLEAN\r
+AccumulateCoffGOTEntries (\r
+ UINT32 GOTCoffEntry\r
+ )\r
+{\r
+ UINT32 i;\r
+ if (mGOTCoffEntries != NULL) {\r
+ for (i = 0; i < mGOTNumCoffEntries; i++) {\r
+ if (mGOTCoffEntries[i] == GOTCoffEntry) {\r
+ return FALSE;\r
+ }\r
+ }\r
+ }\r
+ if (mGOTCoffEntries == NULL) {\r
+ mGOTCoffEntries = (UINT32*)malloc(5 * sizeof *mGOTCoffEntries);\r
+ if (mGOTCoffEntries == NULL) {\r
+ Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");\r
+ }\r
+ assert (mGOTCoffEntries != NULL);\r
+ mGOTMaxCoffEntries = 5;\r
+ mGOTNumCoffEntries = 0;\r
+ } else if (mGOTNumCoffEntries == mGOTMaxCoffEntries) {\r
+ mGOTCoffEntries = (UINT32*)realloc(mGOTCoffEntries, 2 * mGOTMaxCoffEntries * sizeof *mGOTCoffEntries);\r
+ if (mGOTCoffEntries == NULL) {\r
+ Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");\r
+ }\r
+ assert (mGOTCoffEntries != NULL);\r
+ mGOTMaxCoffEntries += mGOTMaxCoffEntries;\r
+ }\r
+ mGOTCoffEntries[mGOTNumCoffEntries++] = GOTCoffEntry;\r
+ return TRUE;\r
+}\r
+\r
+//\r
+// 32-bit Unsigned integer comparator for qsort.\r
+//\r
+STATIC\r
+int\r
+UINT32Comparator (\r
+ const void* lhs,\r
+ const void* rhs\r
+ )\r
+{\r
+ if (*(const UINT32*)lhs < *(const UINT32*)rhs) {\r
+ return -1;\r
+ }\r
+ return *(const UINT32*)lhs > *(const UINT32*)rhs;\r
+}\r
+\r
+//\r
+// Emit accumulated Coff GOT entry relocations into\r
+// Coff image. This function performs its job\r
+// once and then releases the entry list, so\r
+// it can safely be called multiple times.\r
+//\r
+STATIC\r
+VOID\r
+EmitGOTRelocations (\r
+ VOID\r
+ )\r
+{\r
+ UINT32 i;\r
+ if (mGOTCoffEntries == NULL) {\r
+ return;\r
+ }\r
+ //\r
+ // Emit Coff relocations with Rvas ordered.\r
+ //\r
+ qsort(\r
+ mGOTCoffEntries,\r
+ mGOTNumCoffEntries,\r
+ sizeof *mGOTCoffEntries,\r
+ UINT32Comparator);\r
+ for (i = 0; i < mGOTNumCoffEntries; i++) {\r
+ VerboseMsg ("EFI_IMAGE_REL_BASED_DIR64 Offset: 0x%08X", mGOTCoffEntries[i]);\r
+ CoffAddFixup(\r
+ mGOTCoffEntries[i],\r
+ EFI_IMAGE_REL_BASED_DIR64);\r
+ }\r
+ free(mGOTCoffEntries);\r
+ mGOTCoffEntries = NULL;\r
+ mGOTMaxCoffEntries = 0;\r
+ mGOTNumCoffEntries = 0;\r
+}\r
+\r
+//\r
+// Elf functions interface implementation\r
+//\r
+\r
+STATIC\r
+VOID\r
+ScanSections64 (\r
+ VOID\r
+ )\r
+{\r
+ UINT32 i;\r
+ EFI_IMAGE_DOS_HEADER *DosHdr;\r
+ EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;\r
+ UINT32 CoffEntry;\r
+ UINT32 SectionCount;\r
+ BOOLEAN FoundSection;\r
+\r
+ CoffEntry = 0;\r
+ mCoffOffset = 0;\r
+\r
+ //\r
+ // Coff file start with a DOS header.\r
+ //\r
+ mCoffOffset = sizeof(EFI_IMAGE_DOS_HEADER) + 0x40;\r
+ mNtHdrOffset = mCoffOffset;\r
+ switch (mEhdr->e_machine) {\r
+ case EM_X86_64:\r
+ case EM_IA_64:\r
+ case EM_AARCH64:\r
+ mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64);\r
+ break;\r
+ default:\r
+ VerboseMsg ("%s unknown e_machine type %hu. Assume X64", mInImageName, mEhdr->e_machine);\r
+ mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64);\r
+ break;\r
+ }\r
+\r
+ mTableOffset = mCoffOffset;\r
+ mCoffOffset += mCoffNbrSections * sizeof(EFI_IMAGE_SECTION_HEADER);\r
+\r
+ //\r
+ // Set mCoffAlignment to the maximum alignment of the input sections\r
+ // we care about\r
+ //\r
+ for (i = 0; i < mEhdr->e_shnum; i++) {\r
+ Elf_Shdr *shdr = GetShdrByIndex(i);\r
+ if (shdr->sh_addralign <= mCoffAlignment) {\r
+ continue;\r
+ }\r
+ if (IsTextShdr(shdr) || IsDataShdr(shdr) || IsHiiRsrcShdr(shdr)) {\r
+ mCoffAlignment = (UINT32)shdr->sh_addralign;\r
+ }\r
+ }\r
+\r
+ //\r
+ // Check if mCoffAlignment is larger than MAX_COFF_ALIGNMENT\r
+ //\r
+ if (mCoffAlignment > MAX_COFF_ALIGNMENT) {\r
+ Error (NULL, 0, 3000, "Invalid", "Section alignment is larger than MAX_COFF_ALIGNMENT.");\r
+ assert (FALSE);\r
+ }\r
+\r
+\r
+ //\r
+ // Move the PE/COFF header right before the first section. This will help us\r
+ // save space when converting to TE.\r
+ //\r
+ if (mCoffAlignment > mCoffOffset) {\r
+ mNtHdrOffset += mCoffAlignment - mCoffOffset;\r
+ mTableOffset += mCoffAlignment - mCoffOffset;\r
+ mCoffOffset = mCoffAlignment;\r
+ }\r
+\r
+ //\r
+ // First text sections.\r
+ //\r
+ mCoffOffset = CoffAlign(mCoffOffset);\r
+ mTextOffset = mCoffOffset;\r
+ FoundSection = FALSE;\r
+ SectionCount = 0;\r
+ for (i = 0; i < mEhdr->e_shnum; i++) {\r
+ Elf_Shdr *shdr = GetShdrByIndex(i);\r
+ if (IsTextShdr(shdr)) {\r
+ if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {\r
+ // the alignment field is valid\r
+ if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {\r
+ // if the section address is aligned we must align PE/COFF\r
+ mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1));\r
+ } else {\r
+ Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");\r
+ }\r
+ }\r
+\r
+ /* Relocate entry. */\r
+ if ((mEhdr->e_entry >= shdr->sh_addr) &&\r
+ (mEhdr->e_entry < shdr->sh_addr + shdr->sh_size)) {\r
+ CoffEntry = (UINT32) (mCoffOffset + mEhdr->e_entry - shdr->sh_addr);\r
+ }\r
+\r
+ //\r
+ // Set mTextOffset with the offset of the first '.text' section\r
+ //\r
+ if (!FoundSection) {\r
+ mTextOffset = mCoffOffset;\r
+ FoundSection = TRUE;\r
+ }\r
+\r
+ mCoffSectionsOffset[i] = mCoffOffset;\r
+ mCoffOffset += (UINT32) shdr->sh_size;\r
+ SectionCount ++;\r
+ }\r
+ }\r
+\r
+ if (!FoundSection) {\r
+ Error (NULL, 0, 3000, "Invalid", "Did not find any '.text' section.");\r
+ assert (FALSE);\r
+ }\r
+\r
+ mDebugOffset = DebugRvaAlign(mCoffOffset);\r
+ mCoffOffset = CoffAlign(mCoffOffset);\r
+\r
+ if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {\r
+ Warning (NULL, 0, 0, NULL, "Mulitple sections in %s are merged into 1 text section. Source level debug might not work correctly.", mInImageName);\r
+ }\r
+\r
+ //\r
+ // Then data sections.\r
+ //\r
+ mDataOffset = mCoffOffset;\r
+ FoundSection = FALSE;\r
+ SectionCount = 0;\r
+ for (i = 0; i < mEhdr->e_shnum; i++) {\r
+ Elf_Shdr *shdr = GetShdrByIndex(i);\r
+ if (IsDataShdr(shdr)) {\r
+ if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {\r
+ // the alignment field is valid\r
+ if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {\r
+ // if the section address is aligned we must align PE/COFF\r
+ mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1));\r
+ } else {\r
+ Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");\r
+ }\r
+ }\r
+\r
+ //\r
+ // Set mDataOffset with the offset of the first '.data' section\r
+ //\r
+ if (!FoundSection) {\r
+ mDataOffset = mCoffOffset;\r
+ FoundSection = TRUE;\r
+ }\r
+ mCoffSectionsOffset[i] = mCoffOffset;\r
+ mCoffOffset += (UINT32) shdr->sh_size;\r
+ SectionCount ++;\r
+ }\r
+ }\r
+\r
+ //\r
+ // Make room for .debug data in .data (or .text if .data is empty) instead of\r
+ // putting it in a section of its own. This is explicitly allowed by the\r
+ // PE/COFF spec, and prevents bloat in the binary when using large values for\r
+ // section alignment.\r
+ //\r
+ if (SectionCount > 0) {\r
+ mDebugOffset = DebugRvaAlign(mCoffOffset);\r
+ }\r
+ mCoffOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY) +\r
+ sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) +\r
+ strlen(mInImageName) + 1;\r
+\r
+ mCoffOffset = CoffAlign(mCoffOffset);\r
+ if (SectionCount == 0) {\r
+ mDataOffset = mCoffOffset;\r
+ }\r
+\r
+ if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {\r
+ Warning (NULL, 0, 0, NULL, "Mulitple sections in %s are merged into 1 data section. Source level debug might not work correctly.", mInImageName);\r
+ }\r
+\r
+ //\r
+ // The HII resource sections.\r
+ //\r
+ mHiiRsrcOffset = mCoffOffset;\r
+ for (i = 0; i < mEhdr->e_shnum; i++) {\r
+ Elf_Shdr *shdr = GetShdrByIndex(i);\r
+ if (IsHiiRsrcShdr(shdr)) {\r
+ if ((shdr->sh_addralign != 0) && (shdr->sh_addralign != 1)) {\r
+ // the alignment field is valid\r
+ if ((shdr->sh_addr & (shdr->sh_addralign - 1)) == 0) {\r
+ // if the section address is aligned we must align PE/COFF\r
+ mCoffOffset = (UINT32) ((mCoffOffset + shdr->sh_addralign - 1) & ~(shdr->sh_addralign - 1));\r
+ } else {\r
+ Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");\r
+ }\r
+ }\r
+ if (shdr->sh_size != 0) {\r
+ mHiiRsrcOffset = mCoffOffset;\r
+ mCoffSectionsOffset[i] = mCoffOffset;\r
+ mCoffOffset += (UINT32) shdr->sh_size;\r
+ mCoffOffset = CoffAlign(mCoffOffset);\r
+ SetHiiResourceHeader ((UINT8*) mEhdr + shdr->sh_offset, mHiiRsrcOffset);\r
+ }\r
+ break;\r
+ }\r
+ }\r
+\r
+ mRelocOffset = mCoffOffset;\r
+\r
+ //\r
+ // Allocate base Coff file. Will be expanded later for relocations.\r
+ //\r
+ mCoffFile = (UINT8 *)malloc(mCoffOffset);\r
+ if (mCoffFile == NULL) {\r
+ Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");\r
+ }\r
+ assert (mCoffFile != NULL);\r
+ memset(mCoffFile, 0, mCoffOffset);\r
+\r
+ //\r
+ // Fill headers.\r
+ //\r
+ DosHdr = (EFI_IMAGE_DOS_HEADER *)mCoffFile;\r
+ DosHdr->e_magic = EFI_IMAGE_DOS_SIGNATURE;\r
+ DosHdr->e_lfanew = mNtHdrOffset;\r
+\r
+ NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION*)(mCoffFile + mNtHdrOffset);\r
+\r
+ NtHdr->Pe32Plus.Signature = EFI_IMAGE_NT_SIGNATURE;\r
+\r
+ switch (mEhdr->e_machine) {\r
+ case EM_X86_64:\r
+ NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_X64;\r
+ NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;\r
+ break;\r
+ case EM_IA_64:\r
+ NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_IPF;\r
+ NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;\r
+ break;\r
+ case EM_AARCH64:\r
+ NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_AARCH64;\r
+ NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;\r
+ break;\r
+ default:\r
+ VerboseMsg ("%s unknown e_machine type. Assume X64", (UINTN)mEhdr->e_machine);\r
+ NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_X64;\r
+ NtHdr->Pe32Plus.OptionalHeader.Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;\r
+ }\r
+\r
+ NtHdr->Pe32Plus.FileHeader.NumberOfSections = mCoffNbrSections;\r
+ NtHdr->Pe32Plus.FileHeader.TimeDateStamp = (UINT32) time(NULL);\r
+ mImageTimeStamp = NtHdr->Pe32Plus.FileHeader.TimeDateStamp;\r
+ NtHdr->Pe32Plus.FileHeader.PointerToSymbolTable = 0;\r
+ NtHdr->Pe32Plus.FileHeader.NumberOfSymbols = 0;\r
+ NtHdr->Pe32Plus.FileHeader.SizeOfOptionalHeader = sizeof(NtHdr->Pe32Plus.OptionalHeader);\r
+ NtHdr->Pe32Plus.FileHeader.Characteristics = EFI_IMAGE_FILE_EXECUTABLE_IMAGE\r
+ | EFI_IMAGE_FILE_LINE_NUMS_STRIPPED\r
+ | EFI_IMAGE_FILE_LOCAL_SYMS_STRIPPED\r
+ | EFI_IMAGE_FILE_LARGE_ADDRESS_AWARE;\r
+\r
+ NtHdr->Pe32Plus.OptionalHeader.SizeOfCode = mDataOffset - mTextOffset;\r
+ NtHdr->Pe32Plus.OptionalHeader.SizeOfInitializedData = mRelocOffset - mDataOffset;\r
+ NtHdr->Pe32Plus.OptionalHeader.SizeOfUninitializedData = 0;\r
+ NtHdr->Pe32Plus.OptionalHeader.AddressOfEntryPoint = CoffEntry;\r
+\r
+ NtHdr->Pe32Plus.OptionalHeader.BaseOfCode = mTextOffset;\r
+\r
+ NtHdr->Pe32Plus.OptionalHeader.ImageBase = 0;\r
+ NtHdr->Pe32Plus.OptionalHeader.SectionAlignment = mCoffAlignment;\r
+ NtHdr->Pe32Plus.OptionalHeader.FileAlignment = mCoffAlignment;\r
+ NtHdr->Pe32Plus.OptionalHeader.SizeOfImage = 0;\r
+\r
+ NtHdr->Pe32Plus.OptionalHeader.SizeOfHeaders = mTextOffset;\r
+ NtHdr->Pe32Plus.OptionalHeader.NumberOfRvaAndSizes = EFI_IMAGE_NUMBER_OF_DIRECTORY_ENTRIES;\r
+\r
+ //\r
+ // Section headers.\r
+ //\r
+ if ((mDataOffset - mTextOffset) > 0) {\r
+ CreateSectionHeader (".text", mTextOffset, mDataOffset - mTextOffset,\r
+ EFI_IMAGE_SCN_CNT_CODE\r
+ | EFI_IMAGE_SCN_MEM_EXECUTE\r
+ | EFI_IMAGE_SCN_MEM_READ);\r
+ } else {\r
+ // Don't make a section of size 0.\r
+ NtHdr->Pe32Plus.FileHeader.NumberOfSections--;\r
+ }\r
+\r
+ if ((mHiiRsrcOffset - mDataOffset) > 0) {\r
+ CreateSectionHeader (".data", mDataOffset, mHiiRsrcOffset - mDataOffset,\r
+ EFI_IMAGE_SCN_CNT_INITIALIZED_DATA\r
+ | EFI_IMAGE_SCN_MEM_WRITE\r
+ | EFI_IMAGE_SCN_MEM_READ);\r
+ } else {\r
+ // Don't make a section of size 0.\r
+ NtHdr->Pe32Plus.FileHeader.NumberOfSections--;\r
+ }\r
+\r
+ if ((mRelocOffset - mHiiRsrcOffset) > 0) {\r
+ CreateSectionHeader (".rsrc", mHiiRsrcOffset, mRelocOffset - mHiiRsrcOffset,\r
+ EFI_IMAGE_SCN_CNT_INITIALIZED_DATA\r
+ | EFI_IMAGE_SCN_MEM_READ);\r
+\r
+ NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].Size = mRelocOffset - mHiiRsrcOffset;\r
+ NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress = mHiiRsrcOffset;\r
+ } else {\r
+ // Don't make a section of size 0.\r
+ NtHdr->Pe32Plus.FileHeader.NumberOfSections--;\r
+ }\r
+\r
+}\r
+\r
+STATIC\r
+BOOLEAN\r
+WriteSections64 (\r
+ SECTION_FILTER_TYPES FilterType\r
+ )\r
+{\r
+ UINT32 Idx;\r
+ Elf_Shdr *SecShdr;\r
+ UINT32 SecOffset;\r
+ BOOLEAN (*Filter)(Elf_Shdr *);\r
+ Elf64_Addr GOTEntryRva;\r
+\r
+ //\r
+ // Initialize filter pointer\r
+ //\r
+ switch (FilterType) {\r
+ case SECTION_TEXT:\r
+ Filter = IsTextShdr;\r
+ break;\r
+ case SECTION_HII:\r
+ Filter = IsHiiRsrcShdr;\r
+ break;\r
+ case SECTION_DATA:\r
+ Filter = IsDataShdr;\r
+ break;\r
+ default:\r
+ return FALSE;\r
+ }\r
+\r
+ //\r
+ // First: copy sections.\r
+ //\r
+ for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {\r
+ Elf_Shdr *Shdr = GetShdrByIndex(Idx);\r
+ if ((*Filter)(Shdr)) {\r
+ switch (Shdr->sh_type) {\r
+ case SHT_PROGBITS:\r
+ /* Copy. */\r
+ if (Shdr->sh_offset + Shdr->sh_size > mFileBufferSize) {\r
+ return FALSE;\r
+ }\r
+ memcpy(mCoffFile + mCoffSectionsOffset[Idx],\r
+ (UINT8*)mEhdr + Shdr->sh_offset,\r
+ (size_t) Shdr->sh_size);\r
+ break;\r
+\r
+ case SHT_NOBITS:\r
+ memset(mCoffFile + mCoffSectionsOffset[Idx], 0, (size_t) Shdr->sh_size);\r
+ break;\r
+\r
+ default:\r
+ //\r
+ // Ignore for unkown section type.\r
+ //\r
+ VerboseMsg ("%s unknown section type %x. We directly copy this section into Coff file", mInImageName, (unsigned)Shdr->sh_type);\r
+ break;\r
+ }\r
+ }\r
+ }\r
+\r
+ //\r
+ // Second: apply relocations.\r
+ //\r
+ VerboseMsg ("Applying Relocations...");\r
+ for (Idx = 0; Idx < mEhdr->e_shnum; Idx++) {\r
+ //\r
+ // Determine if this is a relocation section.\r
+ //\r
+ Elf_Shdr *RelShdr = GetShdrByIndex(Idx);\r
+ if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) {\r
+ continue;\r
+ }\r
+\r
+ //\r
+ // If this is a ET_DYN (PIE) executable, we will encounter a dynamic SHT_RELA\r
+ // section that applies to the entire binary, and which will have its section\r
+ // index set to #0 (which is a NULL section with the SHF_ALLOC bit cleared).\r
+ //\r
+ // In the absence of GOT based relocations,\r
+ // this RELA section will contain redundant R_xxx_RELATIVE relocations, one\r
+ // for every R_xxx_xx64 relocation appearing in the per-section RELA sections.\r
+ // (i.e., .rela.text and .rela.data)\r
+ //\r
+ if (RelShdr->sh_info == 0) {\r
+ continue;\r
+ }\r
+\r
+ //\r
+ // Relocation section found. Now extract section information that the relocations\r
+ // apply to in the ELF data and the new COFF data.\r
+ //\r
+ SecShdr = GetShdrByIndex(RelShdr->sh_info);\r
+ SecOffset = mCoffSectionsOffset[RelShdr->sh_info];\r
+\r
+ //\r
+ // Only process relocations for the current filter type.\r
+ //\r
+ if (RelShdr->sh_type == SHT_RELA && (*Filter)(SecShdr)) {\r
+ UINT64 RelIdx;\r
+\r
+ //\r
+ // Determine the symbol table referenced by the relocation data.\r
+ //\r
+ Elf_Shdr *SymtabShdr = GetShdrByIndex(RelShdr->sh_link);\r
+ UINT8 *Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset;\r
+\r
+ //\r
+ // Process all relocation entries for this section.\r
+ //\r
+ for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += (UINT32) RelShdr->sh_entsize) {\r
+\r
+ //\r
+ // Set pointer to relocation entry\r
+ //\r
+ Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);\r
+\r
+ //\r
+ // Set pointer to symbol table entry associated with the relocation entry.\r
+ //\r
+ Elf_Sym *Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize);\r
+\r
+ Elf_Shdr *SymShdr;\r
+ UINT8 *Targ;\r
+\r
+ //\r
+ // Check section header index found in symbol table and get the section\r
+ // header location.\r
+ //\r
+ if (Sym->st_shndx == SHN_UNDEF\r
+ || Sym->st_shndx >= mEhdr->e_shnum) {\r
+ const UINT8 *SymName = GetSymName(Sym);\r
+ if (SymName == NULL) {\r
+ SymName = (const UINT8 *)"<unknown>";\r
+ }\r
+\r
+ Error (NULL, 0, 3000, "Invalid",\r
+ "%s: Bad definition for symbol '%s'@%#llx or unsupported symbol type. "\r
+ "For example, absolute and undefined symbols are not supported.",\r
+ mInImageName, SymName, Sym->st_value);\r
+\r
+ exit(EXIT_FAILURE);\r
+ }\r
+ SymShdr = GetShdrByIndex(Sym->st_shndx);\r
+\r
+ //\r
+ // Convert the relocation data to a pointer into the coff file.\r
+ //\r
+ // Note:\r
+ // r_offset is the virtual address of the storage unit to be relocated.\r
+ // sh_addr is the virtual address for the base of the section.\r
+ //\r
+ // r_offset in a memory address.\r
+ // Convert it to a pointer in the coff file.\r
+ //\r
+ Targ = mCoffFile + SecOffset + (Rel->r_offset - SecShdr->sh_addr);\r
+\r
+ //\r
+ // Determine how to handle each relocation type based on the machine type.\r
+ //\r
+ if (mEhdr->e_machine == EM_X86_64) {\r
+ switch (ELF_R_TYPE(Rel->r_info)) {\r
+ case R_X86_64_NONE:\r
+ break;\r
+ case R_X86_64_64:\r
+ //\r
+ // Absolute relocation.\r
+ //\r
+ VerboseMsg ("R_X86_64_64");\r
+ VerboseMsg ("Offset: 0x%08X, Addend: 0x%016LX",\r
+ (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),\r
+ *(UINT64 *)Targ);\r
+ *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];\r
+ VerboseMsg ("Relocation: 0x%016LX", *(UINT64*)Targ);\r
+ break;\r
+ case R_X86_64_32:\r
+ VerboseMsg ("R_X86_64_32");\r
+ VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",\r
+ (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),\r
+ *(UINT32 *)Targ);\r
+ *(UINT32 *)Targ = (UINT32)((UINT64)(*(UINT32 *)Targ) - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]);\r
+ VerboseMsg ("Relocation: 0x%08X", *(UINT32*)Targ);\r
+ break;\r
+ case R_X86_64_32S:\r
+ VerboseMsg ("R_X86_64_32S");\r
+ VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",\r
+ (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),\r
+ *(UINT32 *)Targ);\r
+ *(INT32 *)Targ = (INT32)((INT64)(*(INT32 *)Targ) - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]);\r
+ VerboseMsg ("Relocation: 0x%08X", *(UINT32*)Targ);\r
+ break;\r
+\r
+ case R_X86_64_PLT32:\r
+ //\r
+ // Treat R_X86_64_PLT32 relocations as R_X86_64_PC32: this is\r
+ // possible since we know all code symbol references resolve to\r
+ // definitions in the same module (UEFI has no shared libraries),\r
+ // and so there is never a reason to jump via a PLT entry,\r
+ // allowing us to resolve the reference using the symbol directly.\r
+ //\r
+ VerboseMsg ("Treating R_X86_64_PLT32 as R_X86_64_PC32 ...");\r
+ /* fall through */\r
+ case R_X86_64_PC32:\r
+ //\r
+ // Relative relocation: Symbol - Ip + Addend\r
+ //\r
+ VerboseMsg ("R_X86_64_PC32");\r
+ VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",\r
+ (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),\r
+ *(UINT32 *)Targ);\r
+ *(UINT32 *)Targ = (UINT32) (*(UINT32 *)Targ\r
+ + (mCoffSectionsOffset[Sym->st_shndx] - SymShdr->sh_addr)\r
+ - (SecOffset - SecShdr->sh_addr));\r
+ VerboseMsg ("Relocation: 0x%08X", *(UINT32 *)Targ);\r
+ break;\r
+ case R_X86_64_GOTPCREL:\r
+ case R_X86_64_GOTPCRELX:\r
+ case R_X86_64_REX_GOTPCRELX:\r
+ VerboseMsg ("R_X86_64_GOTPCREL family");\r
+ VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X",\r
+ (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)),\r
+ *(UINT32 *)Targ);\r
+ GOTEntryRva = Rel->r_offset - Rel->r_addend + *(INT32 *)Targ;\r
+ FindElfGOTSectionFromGOTEntryElfRva(GOTEntryRva);\r
+ *(UINT32 *)Targ = (UINT32) (*(UINT32 *)Targ\r
+ + (mCoffSectionsOffset[mGOTShindex] - mGOTShdr->sh_addr)\r
+ - (SecOffset - SecShdr->sh_addr));\r
+ VerboseMsg ("Relocation: 0x%08X", *(UINT32 *)Targ);\r
+ GOTEntryRva += (mCoffSectionsOffset[mGOTShindex] - mGOTShdr->sh_addr); // ELF Rva -> COFF Rva\r
+ if (AccumulateCoffGOTEntries((UINT32)GOTEntryRva)) {\r
+ //\r
+ // Relocate GOT entry if it's the first time we run into it\r
+ //\r
+ Targ = mCoffFile + GOTEntryRva;\r
+ //\r
+ // Limitation: The following three statements assume memory\r
+ // at *Targ is valid because the section containing the GOT\r
+ // has already been copied from the ELF image to the Coff image.\r
+ // This pre-condition presently holds because the GOT is placed\r
+ // in section .text, and the ELF text sections are all copied\r
+ // prior to reaching this point.\r
+ // If the pre-condition is violated in the future, this fixup\r
+ // either needs to be deferred after the GOT section is copied\r
+ // to the Coff image, or the fixup should be performed on the\r
+ // source Elf image instead of the destination Coff image.\r
+ //\r
+ VerboseMsg ("Offset: 0x%08X, Addend: 0x%016LX",\r
+ (UINT32)GOTEntryRva,\r
+ *(UINT64 *)Targ);\r
+ *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];\r
+ VerboseMsg ("Relocation: 0x%016LX", *(UINT64*)Targ);\r
+ }\r
+ break;\r
+ default:\r
+ Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_X86_64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));\r
+ }\r
+ } else if (mEhdr->e_machine == EM_AARCH64) {\r
+\r
+ switch (ELF_R_TYPE(Rel->r_info)) {\r
+\r
+ case R_AARCH64_ADR_PREL_PG_HI21:\r
+ //\r
+ // AArch64 PG_H21 relocations are typically paired with ABS_LO12\r
+ // relocations, where a PC-relative reference with +/- 4 GB range is\r
+ // split into a relative high part and an absolute low part. Since\r
+ // the absolute low part represents the offset into a 4 KB page, we\r
+ // either have to convert the ADRP into an ADR instruction, or we\r
+ // need to use a section alignment of at least 4 KB, so that the\r
+ // binary appears at a correct offset at runtime. In any case, we\r
+ // have to make sure that the 4 KB relative offsets of both the\r
+ // section containing the reference as well as the section to which\r
+ // it refers have not been changed during PE/COFF conversion (i.e.,\r
+ // in ScanSections64() above).\r
+ //\r
+ if (mCoffAlignment < 0x1000) {\r
+ //\r
+ // Attempt to convert the ADRP into an ADR instruction.\r
+ // This is only possible if the symbol is within +/- 1 MB.\r
+ //\r
+ INT64 Offset;\r
+\r
+ // Decode the ADRP instruction\r
+ Offset = (INT32)((*(UINT32 *)Targ & 0xffffe0) << 8);\r
+ Offset = (Offset << (6 - 5)) | ((*(UINT32 *)Targ & 0x60000000) >> (29 - 12));\r
+\r
+ //\r
+ // ADRP offset is relative to the previous page boundary,\r
+ // whereas ADR offset is relative to the instruction itself.\r
+ // So fix up the offset so it points to the page containing\r
+ // the symbol.\r
+ //\r
+ Offset -= (UINTN)(Targ - mCoffFile) & 0xfff;\r
+\r
+ if (Offset < -0x100000 || Offset > 0xfffff) {\r
+ Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s due to its size (> 1 MB), this module requires 4 KB section alignment.",\r
+ mInImageName);\r
+ break;\r
+ }\r
+\r
+ // Re-encode the offset as an ADR instruction\r
+ *(UINT32 *)Targ &= 0x1000001f;\r
+ *(UINT32 *)Targ |= ((Offset & 0x1ffffc) << (5 - 2)) | ((Offset & 0x3) << 29);\r
+ }\r
+ /* fall through */\r
+\r
+ case R_AARCH64_ADD_ABS_LO12_NC:\r
+ case R_AARCH64_LDST8_ABS_LO12_NC:\r
+ case R_AARCH64_LDST16_ABS_LO12_NC:\r
+ case R_AARCH64_LDST32_ABS_LO12_NC:\r
+ case R_AARCH64_LDST64_ABS_LO12_NC:\r
+ case R_AARCH64_LDST128_ABS_LO12_NC:\r
+ if (((SecShdr->sh_addr ^ SecOffset) & 0xfff) != 0 ||\r
+ ((SymShdr->sh_addr ^ mCoffSectionsOffset[Sym->st_shndx]) & 0xfff) != 0) {\r
+ Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s AARCH64 small code model requires identical ELF and PE/COFF section offsets modulo 4 KB.",\r
+ mInImageName);\r
+ break;\r
+ }\r
+ /* fall through */\r
+\r
+ case R_AARCH64_ADR_PREL_LO21:\r
+ case R_AARCH64_CONDBR19:\r
+ case R_AARCH64_LD_PREL_LO19:\r
+ case R_AARCH64_CALL26:\r
+ case R_AARCH64_JUMP26:\r
+ case R_AARCH64_PREL64:\r
+ case R_AARCH64_PREL32:\r
+ case R_AARCH64_PREL16:\r
+ //\r
+ // The GCC toolchains (i.e., binutils) may corrupt section relative\r
+ // relocations when emitting relocation sections into fully linked\r
+ // binaries. More specifically, they tend to fail to take into\r
+ // account the fact that a '.rodata + XXX' relocation needs to have\r
+ // its addend recalculated once .rodata is merged into the .text\r
+ // section, and the relocation emitted into the .rela.text section.\r
+ //\r
+ // We cannot really recover from this loss of information, so the\r
+ // only workaround is to prevent having to recalculate any relative\r
+ // relocations at all, by using a linker script that ensures that\r
+ // the offset between the Place and the Symbol is the same in both\r
+ // the ELF and the PE/COFF versions of the binary.\r
+ //\r
+ if ((SymShdr->sh_addr - SecShdr->sh_addr) !=\r
+ (mCoffSectionsOffset[Sym->st_shndx] - SecOffset)) {\r
+ Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s AARCH64 relative relocations require identical ELF and PE/COFF section offsets",\r
+ mInImageName);\r
+ }\r
+ break;\r
+\r
+ // Absolute relocations.\r
+ case R_AARCH64_ABS64:\r
+ *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];\r
+ break;\r
+\r
+ default:\r
+ Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s unsupported ELF EM_AARCH64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));\r
+ }\r
+ } else {\r
+ Error (NULL, 0, 3000, "Invalid", "Not a supported machine type");\r
+ }\r
+ }\r
+ }\r
+ }\r
+\r
+ return TRUE;\r
+}\r
+\r
+STATIC\r
+VOID\r
+WriteRelocations64 (\r
+ VOID\r
+ )\r
+{\r
+ UINT32 Index;\r
+ EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;\r
+ EFI_IMAGE_DATA_DIRECTORY *Dir;\r
+\r
+ for (Index = 0; Index < mEhdr->e_shnum; Index++) {\r
+ Elf_Shdr *RelShdr = GetShdrByIndex(Index);\r
+ if ((RelShdr->sh_type == SHT_REL) || (RelShdr->sh_type == SHT_RELA)) {\r
+ Elf_Shdr *SecShdr = GetShdrByIndex (RelShdr->sh_info);\r
+ if (IsTextShdr(SecShdr) || IsDataShdr(SecShdr)) {\r
+ UINT64 RelIdx;\r
+\r
+ for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += RelShdr->sh_entsize) {\r
+ Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);\r
+\r
+ if (mEhdr->e_machine == EM_X86_64) {\r
+ switch (ELF_R_TYPE(Rel->r_info)) {\r
+ case R_X86_64_NONE:\r
+ case R_X86_64_PC32:\r
+ case R_X86_64_PLT32:\r
+ case R_X86_64_GOTPCREL:\r
+ case R_X86_64_GOTPCRELX:\r
+ case R_X86_64_REX_GOTPCRELX:\r
+ break;\r
+ case R_X86_64_64:\r
+ VerboseMsg ("EFI_IMAGE_REL_BASED_DIR64 Offset: 0x%08X",\r
+ mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr));\r
+ CoffAddFixup(\r
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]\r
+ + (Rel->r_offset - SecShdr->sh_addr)),\r
+ EFI_IMAGE_REL_BASED_DIR64);\r
+ break;\r
+ case R_X86_64_32S:\r
+ case R_X86_64_32:\r
+ VerboseMsg ("EFI_IMAGE_REL_BASED_HIGHLOW Offset: 0x%08X",\r
+ mCoffSectionsOffset[RelShdr->sh_info] + (Rel->r_offset - SecShdr->sh_addr));\r
+ CoffAddFixup(\r
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]\r
+ + (Rel->r_offset - SecShdr->sh_addr)),\r
+ EFI_IMAGE_REL_BASED_HIGHLOW);\r
+ break;\r
+ default:\r
+ Error (NULL, 0, 3000, "Invalid", "%s unsupported ELF EM_X86_64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));\r
+ }\r
+ } else if (mEhdr->e_machine == EM_AARCH64) {\r
+\r
+ switch (ELF_R_TYPE(Rel->r_info)) {\r
+ case R_AARCH64_ADR_PREL_LO21:\r
+ case R_AARCH64_CONDBR19:\r
+ case R_AARCH64_LD_PREL_LO19:\r
+ case R_AARCH64_CALL26:\r
+ case R_AARCH64_JUMP26:\r
+ case R_AARCH64_PREL64:\r
+ case R_AARCH64_PREL32:\r
+ case R_AARCH64_PREL16:\r
+ case R_AARCH64_ADR_PREL_PG_HI21:\r
+ case R_AARCH64_ADD_ABS_LO12_NC:\r
+ case R_AARCH64_LDST8_ABS_LO12_NC:\r
+ case R_AARCH64_LDST16_ABS_LO12_NC:\r
+ case R_AARCH64_LDST32_ABS_LO12_NC:\r
+ case R_AARCH64_LDST64_ABS_LO12_NC:\r
+ case R_AARCH64_LDST128_ABS_LO12_NC:\r
+ //\r
+ // No fixups are required for relative relocations, provided that\r
+ // the relative offsets between sections have been preserved in\r
+ // the ELF to PE/COFF conversion. We have already asserted that\r
+ // this is the case in WriteSections64 ().\r
+ //\r
+ break;\r
+\r
+ case R_AARCH64_ABS64:\r
+ CoffAddFixup(\r
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]\r
+ + (Rel->r_offset - SecShdr->sh_addr)),\r
+ EFI_IMAGE_REL_BASED_DIR64);\r
+ break;\r
+\r
+ case R_AARCH64_ABS32:\r
+ CoffAddFixup(\r
+ (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]\r
+ + (Rel->r_offset - SecShdr->sh_addr)),\r
+ EFI_IMAGE_REL_BASED_HIGHLOW);\r
+ break;\r
+\r
+ default:\r
+ Error (NULL, 0, 3000, "Invalid", "WriteRelocations64(): %s unsupported ELF EM_AARCH64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));\r
+ }\r
+ } else {\r
+ Error (NULL, 0, 3000, "Not Supported", "This tool does not support relocations for ELF with e_machine %u (processor type).", (unsigned) mEhdr->e_machine);\r
+ }\r
+ }\r
+ if (mEhdr->e_machine == EM_X86_64 && RelShdr->sh_info == mGOTShindex) {\r
+ //\r
+ // Tack relocations for GOT entries after other relocations for\r
+ // the section the GOT is in, as it's usually found at the end\r
+ // of the section. This is done in order to maintain Rva order\r
+ // of Coff relocations.\r
+ //\r
+ EmitGOTRelocations();\r
+ }\r
+ }\r
+ }\r
+ }\r
+\r
+ if (mEhdr->e_machine == EM_X86_64) {\r
+ //\r
+ // This is a safety net just in case the GOT is in a section\r
+ // with no other relocations and the first invocation of\r
+ // EmitGOTRelocations() above was skipped. This invocation\r
+ // does not maintain Rva order of Coff relocations.\r
+ // At present, with a single text section, all references to\r
+ // the GOT and the GOT itself reside in section .text, so\r
+ // if there's a GOT at all, the first invocation above\r
+ // is executed.\r
+ //\r
+ EmitGOTRelocations();\r
+ }\r
+ //\r
+ // Pad by adding empty entries.\r
+ //\r
+ while (mCoffOffset & (mCoffAlignment - 1)) {\r
+ CoffAddFixupEntry(0);\r
+ }\r
+\r
+ NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);\r
+ Dir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC];\r
+ Dir->Size = mCoffOffset - mRelocOffset;\r
+ if (Dir->Size == 0) {\r
+ // If no relocations, null out the directory entry and don't add the .reloc section\r
+ Dir->VirtualAddress = 0;\r
+ NtHdr->Pe32Plus.FileHeader.NumberOfSections--;\r
+ } else {\r
+ Dir->VirtualAddress = mRelocOffset;\r
+ CreateSectionHeader (".reloc", mRelocOffset, mCoffOffset - mRelocOffset,\r
+ EFI_IMAGE_SCN_CNT_INITIALIZED_DATA\r
+ | EFI_IMAGE_SCN_MEM_DISCARDABLE\r
+ | EFI_IMAGE_SCN_MEM_READ);\r
+ }\r
+}\r
+\r
+STATIC\r
+VOID\r
+WriteDebug64 (\r
+ VOID\r
+ )\r
+{\r
+ UINT32 Len;\r
+ EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;\r
+ EFI_IMAGE_DATA_DIRECTORY *DataDir;\r
+ EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *Dir;\r
+ EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY *Nb10;\r
+\r
+ Len = strlen(mInImageName) + 1;\r
+\r
+ Dir = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY*)(mCoffFile + mDebugOffset);\r
+ Dir->Type = EFI_IMAGE_DEBUG_TYPE_CODEVIEW;\r
+ Dir->SizeOfData = sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) + Len;\r
+ Dir->RVA = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);\r
+ Dir->FileOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);\r
+\r
+ Nb10 = (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY*)(Dir + 1);\r
+ Nb10->Signature = CODEVIEW_SIGNATURE_NB10;\r
+ strcpy ((char *)(Nb10 + 1), mInImageName);\r
+\r
+\r
+ NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);\r
+ DataDir = &NtHdr->Pe32Plus.OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG];\r
+ DataDir->VirtualAddress = mDebugOffset;\r
+ DataDir->Size = sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);\r
+}\r
+\r
+STATIC\r
+VOID\r
+SetImageSize64 (\r
+ VOID\r
+ )\r
+{\r
+ EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;\r
+\r
+ //\r
+ // Set image size\r
+ //\r
+ NtHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)(mCoffFile + mNtHdrOffset);\r
+ NtHdr->Pe32Plus.OptionalHeader.SizeOfImage = mCoffOffset;\r
+}\r
+\r
+STATIC\r
+VOID\r
+CleanUp64 (\r
+ VOID\r
+ )\r
+{\r
+ if (mCoffSectionsOffset != NULL) {\r
+ free (mCoffSectionsOffset);\r
+ }\r
+}\r
+\r
+\r
projects / mirror_edk2.git / blobdiff