diff options
Diffstat (limited to 'BaseTools/Source/C/GenFw/Elf64Convert.c')
| -rw-r--r-- | BaseTools/Source/C/GenFw/Elf64Convert.c | 1127 |
1 files changed, 0 insertions, 1127 deletions
diff --git a/BaseTools/Source/C/GenFw/Elf64Convert.c b/BaseTools/Source/C/GenFw/Elf64Convert.c deleted file mode 100644 index 7eed7b92d3..0000000000 --- a/BaseTools/Source/C/GenFw/Elf64Convert.c +++ /dev/null @@ -1,1127 +0,0 @@ -/** @file
-Elf64 convert solution
-
-Copyright (c) 2010 - 2017, Intel Corporation. All rights reserved.<BR>
-Portions copyright (c) 2013-2014, ARM Ltd. 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 <assert.h>
-#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 UINT32 mCoffAlignment = 0x20;
-
-//
-// PE section alignment.
-//
-STATIC const UINT16 mCoffNbrSections = 4;
-
-//
-// 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;
-STATIC UINT32 mDebugOffset;
-
-//
-// 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) || (mEhdr->e_machine == EM_AARCH64))) {
- Error (NULL, 0, 3000, "Unsupported", "ELF e_machine not EM_X86_64 or EM_AARCH64");
- 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));
- if (mCoffSectionsOffset == NULL) {
- Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
- return FALSE;
- }
- 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) {
- Error (NULL, 0, 3000, "Invalid", "GetShdrByIndex: Index %u is too high.", Num);
- exit(EXIT_FAILURE);
- }
-
- return (Elf_Shdr*)((UINT8*)mShdrBase + Num * mEhdr->e_shentsize);
-}
-
-STATIC
-UINT32
-CoffAlign (
- UINT32 Offset
- )
-{
- return (Offset + mCoffAlignment - 1) & ~(mCoffAlignment - 1);
-}
-
-STATIC
-UINT32
-DebugRvaAlign (
- UINT32 Offset
- )
-{
- return (Offset + 3) & ~3;
-}
-
-//
-// 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);
-}
-
-STATIC
-BOOLEAN
-IsStrtabShdr (
- Elf_Shdr *Shdr
- )
-{
- Elf_Shdr *Namedr = GetShdrByIndex(mEhdr->e_shstrndx);
-
- return (BOOLEAN) (strcmp((CHAR8*)mEhdr + Namedr->sh_offset + Shdr->sh_name, ELF_STRTAB_SECTION_NAME) == 0);
-}
-
-STATIC
-Elf_Shdr *
-FindStrtabShdr (
- VOID
- )
-{
- UINT32 i;
- for (i = 0; i < mEhdr->e_shnum; i++) {
- Elf_Shdr *shdr = GetShdrByIndex(i);
- if (IsStrtabShdr(shdr)) {
- return shdr;
- }
- }
- return NULL;
-}
-
-STATIC
-const UINT8 *
-GetSymName (
- Elf_Sym *Sym
- )
-{
- Elf_Shdr *StrtabShdr;
- UINT8 *StrtabContents;
- BOOLEAN foundEnd;
- UINT32 i;
-
- if (Sym->st_name == 0) {
- return NULL;
- }
-
- StrtabShdr = FindStrtabShdr();
- if (StrtabShdr == NULL) {
- return NULL;
- }
-
- assert(Sym->st_name < StrtabShdr->sh_size);
-
- StrtabContents = (UINT8*)mEhdr + StrtabShdr->sh_offset;
-
- foundEnd = FALSE;
- for (i= Sym->st_name; (i < StrtabShdr->sh_size) && !foundEnd; i++) {
- foundEnd = (BOOLEAN)(StrtabContents[i] == 0);
- }
- assert(foundEnd);
-
- return StrtabContents + Sym->st_name;
-}
-
-//
-// Elf functions interface implementation
-//
-
-STATIC
-VOID
-ScanSections64 (
- VOID
- )
-{
- UINT32 i;
- EFI_IMAGE_DOS_HEADER *DosHdr;
- EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
- UINT32 CoffEntry;
- UINT32 SectionCount;
- BOOLEAN FoundSection;
-
- 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:
- case EM_AARCH64:
- mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64);
- break;
- default:
- VerboseMsg ("%s unknown e_machine type %hu. Assume X64", mInImageName, mEhdr->e_machine);
- mCoffOffset += sizeof (EFI_IMAGE_NT_HEADERS64);
- break;
- }
-
- mTableOffset = mCoffOffset;
- mCoffOffset += mCoffNbrSections * sizeof(EFI_IMAGE_SECTION_HEADER);
-
- //
- // Set mCoffAlignment to the maximum alignment of the input sections
- // we care about
- //
- for (i = 0; i < mEhdr->e_shnum; i++) {
- Elf_Shdr *shdr = GetShdrByIndex(i);
- if (shdr->sh_addralign <= mCoffAlignment) {
- continue;
- }
- if (IsTextShdr(shdr) || IsDataShdr(shdr) || IsHiiRsrcShdr(shdr)) {
- mCoffAlignment = (UINT32)shdr->sh_addralign;
- }
- }
-
- //
- // Move the PE/COFF header right before the first section. This will help us
- // save space when converting to TE.
- //
- if (mCoffAlignment > mCoffOffset) {
- mNtHdrOffset += mCoffAlignment - mCoffOffset;
- mTableOffset += mCoffAlignment - mCoffOffset;
- mCoffOffset = mCoffAlignment;
- }
-
- //
- // First text sections.
- //
- mCoffOffset = CoffAlign(mCoffOffset);
- mTextOffset = mCoffOffset;
- FoundSection = FALSE;
- SectionCount = 0;
- 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 {
- Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own 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);
- }
-
- //
- // Set mTextOffset with the offset of the first '.text' section
- //
- if (!FoundSection) {
- mTextOffset = mCoffOffset;
- FoundSection = TRUE;
- }
-
- mCoffSectionsOffset[i] = mCoffOffset;
- mCoffOffset += (UINT32) shdr->sh_size;
- SectionCount ++;
- }
- }
-
- if (!FoundSection) {
- Error (NULL, 0, 3000, "Invalid", "Did not find any '.text' section.");
- assert (FALSE);
- }
-
- mDebugOffset = DebugRvaAlign(mCoffOffset);
- mCoffOffset = CoffAlign(mCoffOffset);
-
- if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {
- Warning (NULL, 0, 0, NULL, "Mulitple sections in %s are merged into 1 text section. Source level debug might not work correctly.", mInImageName);
- }
-
- //
- // Then data sections.
- //
- mDataOffset = mCoffOffset;
- FoundSection = FALSE;
- SectionCount = 0;
- 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 {
- Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
- }
- }
-
- //
- // Set mDataOffset with the offset of the first '.data' section
- //
- if (!FoundSection) {
- mDataOffset = mCoffOffset;
- FoundSection = TRUE;
- }
- mCoffSectionsOffset[i] = mCoffOffset;
- mCoffOffset += (UINT32) shdr->sh_size;
- SectionCount ++;
- }
- }
-
- //
- // Make room for .debug data in .data (or .text if .data is empty) instead of
- // putting it in a section of its own. This is explicitly allowed by the
- // PE/COFF spec, and prevents bloat in the binary when using large values for
- // section alignment.
- //
- if (SectionCount > 0) {
- mDebugOffset = DebugRvaAlign(mCoffOffset);
- }
- mCoffOffset = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY) +
- sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) +
- strlen(mInImageName) + 1;
-
- mCoffOffset = CoffAlign(mCoffOffset);
- if (SectionCount == 0) {
- mDataOffset = mCoffOffset;
- }
-
- if (SectionCount > 1 && mOutImageType == FW_EFI_IMAGE) {
- Warning (NULL, 0, 0, NULL, "Mulitple sections in %s are merged into 1 data section. Source level debug might not work correctly.", mInImageName);
- }
-
- //
- // 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 {
- Error (NULL, 0, 3000, "Invalid", "Section address not aligned to its own alignment.");
- }
- }
- if (shdr->sh_size != 0) {
- mHiiRsrcOffset = mCoffOffset;
- 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);
- if (mCoffFile == NULL) {
- Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!");
- }
- assert (mCoffFile != NULL);
- 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;
- case EM_AARCH64:
- NtHdr->Pe32Plus.FileHeader.Machine = EFI_IMAGE_MACHINE_AARCH64;
- 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++) {
- //
- // Determine if this is a relocation section.
- //
- Elf_Shdr *RelShdr = GetShdrByIndex(Idx);
- if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) {
- continue;
- }
-
- //
- // If this is a ET_DYN (PIE) executable, we will encounter a dynamic SHT_RELA
- // section that applies to the entire binary, and which will have its section
- // index set to #0 (which is a NULL section with the SHF_ALLOC bit cleared).
- //
- // In the absence of GOT based relocations (which we currently don't support),
- // this RELA section will contain redundant R_xxx_RELATIVE relocations, one
- // for every R_xxx_xx64 relocation appearing in the per-section RELA sections.
- // (i.e., .rela.text and .rela.data)
- //
- if (RelShdr->sh_info == 0) {
- continue;
- }
-
- //
- // Relocation section found. Now extract section information that the relocations
- // apply to in the ELF data and the new COFF data.
- //
- SecShdr = GetShdrByIndex(RelShdr->sh_info);
- SecOffset = mCoffSectionsOffset[RelShdr->sh_info];
-
- //
- // Only process relocations for the current filter type.
- //
- if (RelShdr->sh_type == SHT_RELA && (*Filter)(SecShdr)) {
- UINT64 RelIdx;
-
- //
- // Determine the symbol table referenced by the relocation data.
- //
- Elf_Shdr *SymtabShdr = GetShdrByIndex(RelShdr->sh_link);
- UINT8 *Symtab = (UINT8*)mEhdr + SymtabShdr->sh_offset;
-
- //
- // Process all relocation entries for this section.
- //
- for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += (UINT32) RelShdr->sh_entsize) {
-
- //
- // Set pointer to relocation entry
- //
- Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);
-
- //
- // Set pointer to symbol table entry associated with the relocation entry.
- //
- Elf_Sym *Sym = (Elf_Sym *)(Symtab + ELF_R_SYM(Rel->r_info) * SymtabShdr->sh_entsize);
-
- Elf_Shdr *SymShdr;
- UINT8 *Targ;
-
- //
- // Check section header index found in symbol table and get the section
- // header location.
- //
- if (Sym->st_shndx == SHN_UNDEF
- || Sym->st_shndx >= mEhdr->e_shnum) {
- const UINT8 *SymName = GetSymName(Sym);
- if (SymName == NULL) {
- SymName = (const UINT8 *)"<unknown>";
- }
-
- Error (NULL, 0, 3000, "Invalid",
- "%s: Bad definition for symbol '%s'@%#llx or unsupported symbol type. "
- "For example, absolute and undefined symbols are not supported.",
- mInImageName, SymName, Sym->st_value);
-
- exit(EXIT_FAILURE);
- }
- SymShdr = GetShdrByIndex(Sym->st_shndx);
-
- //
- // Convert the relocation data to a pointer into the coff file.
- //
- // Note:
- // r_offset is the virtual address of the storage unit to be relocated.
- // sh_addr is the virtual address for the base of the section.
- //
- // r_offset in a memory address.
- // Convert it to a pointer in the coff file.
- //
- Targ = mCoffFile + SecOffset + (Rel->r_offset - SecShdr->sh_addr);
-
- //
- // Determine how to handle each relocation type based on the machine type.
- //
- 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_PLT32:
- //
- // Treat R_X86_64_PLT32 relocations as R_X86_64_PC32: this is
- // possible since we know all code symbol references resolve to
- // definitions in the same module (UEFI has no shared libraries),
- // and so there is never a reason to jump via a PLT entry,
- // allowing us to resolve the reference using the symbol directly.
- //
- VerboseMsg ("Treating R_X86_64_PLT32 as R_X86_64_PC32 ...");
- /* fall through */
- 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 if (mEhdr->e_machine == EM_AARCH64) {
-
- switch (ELF_R_TYPE(Rel->r_info)) {
-
- case R_AARCH64_ADR_PREL_PG_HI21:
- //
- // AArch64 PG_H21 relocations are typically paired with ABS_LO12
- // relocations, where a PC-relative reference with +/- 4 GB range is
- // split into a relative high part and an absolute low part. Since
- // the absolute low part represents the offset into a 4 KB page, we
- // either have to convert the ADRP into an ADR instruction, or we
- // need to use a section alignment of at least 4 KB, so that the
- // binary appears at a correct offset at runtime. In any case, we
- // have to make sure that the 4 KB relative offsets of both the
- // section containing the reference as well as the section to which
- // it refers have not been changed during PE/COFF conversion (i.e.,
- // in ScanSections64() above).
- //
- if (mCoffAlignment < 0x1000) {
- //
- // Attempt to convert the ADRP into an ADR instruction.
- // This is only possible if the symbol is within +/- 1 MB.
- //
- INT64 Offset;
-
- // Decode the ADRP instruction
- Offset = (INT32)((*(UINT32 *)Targ & 0xffffe0) << 8);
- Offset = (Offset << (6 - 5)) | ((*(UINT32 *)Targ & 0x60000000) >> (29 - 12));
-
- //
- // ADRP offset is relative to the previous page boundary,
- // whereas ADR offset is relative to the instruction itself.
- // So fix up the offset so it points to the page containing
- // the symbol.
- //
- Offset -= (UINTN)(Targ - mCoffFile) & 0xfff;
-
- if (Offset < -0x100000 || Offset > 0xfffff) {
- Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s due to its size (> 1 MB), this module requires 4 KB section alignment.",
- mInImageName);
- break;
- }
-
- // Re-encode the offset as an ADR instruction
- *(UINT32 *)Targ &= 0x1000001f;
- *(UINT32 *)Targ |= ((Offset & 0x1ffffc) << (5 - 2)) | ((Offset & 0x3) << 29);
- }
- /* fall through */
-
- case R_AARCH64_ADD_ABS_LO12_NC:
- case R_AARCH64_LDST8_ABS_LO12_NC:
- case R_AARCH64_LDST16_ABS_LO12_NC:
- case R_AARCH64_LDST32_ABS_LO12_NC:
- case R_AARCH64_LDST64_ABS_LO12_NC:
- case R_AARCH64_LDST128_ABS_LO12_NC:
- if (((SecShdr->sh_addr ^ SecOffset) & 0xfff) != 0 ||
- ((SymShdr->sh_addr ^ mCoffSectionsOffset[Sym->st_shndx]) & 0xfff) != 0) {
- Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s AARCH64 small code model requires identical ELF and PE/COFF section offsets modulo 4 KB.",
- mInImageName);
- break;
- }
- /* fall through */
-
- case R_AARCH64_ADR_PREL_LO21:
- case R_AARCH64_CONDBR19:
- case R_AARCH64_LD_PREL_LO19:
- case R_AARCH64_CALL26:
- case R_AARCH64_JUMP26:
- case R_AARCH64_PREL64:
- case R_AARCH64_PREL32:
- case R_AARCH64_PREL16:
- //
- // The GCC toolchains (i.e., binutils) may corrupt section relative
- // relocations when emitting relocation sections into fully linked
- // binaries. More specifically, they tend to fail to take into
- // account the fact that a '.rodata + XXX' relocation needs to have
- // its addend recalculated once .rodata is merged into the .text
- // section, and the relocation emitted into the .rela.text section.
- //
- // We cannot really recover from this loss of information, so the
- // only workaround is to prevent having to recalculate any relative
- // relocations at all, by using a linker script that ensures that
- // the offset between the Place and the Symbol is the same in both
- // the ELF and the PE/COFF versions of the binary.
- //
- if ((SymShdr->sh_addr - SecShdr->sh_addr) !=
- (mCoffSectionsOffset[Sym->st_shndx] - SecOffset)) {
- Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s AARCH64 relative relocations require identical ELF and PE/COFF section offsets",
- mInImageName);
- }
- break;
-
- // Absolute relocations.
- case R_AARCH64_ABS64:
- *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx];
- break;
-
- default:
- Error (NULL, 0, 3000, "Invalid", "WriteSections64(): %s unsupported ELF EM_AARCH64 relocation 0x%x.", mInImageName, (unsigned) ELF_R_TYPE(Rel->r_info));
- }
- } else {
- Error (NULL, 0, 3000, "Invalid", "Not a supported machine type");
- }
- }
- }
- }
-
- return TRUE;
-}
-
-STATIC
-VOID
-WriteRelocations64 (
- VOID
- )
-{
- UINT32 Index;
- EFI_IMAGE_OPTIONAL_HEADER_UNION *NtHdr;
- EFI_IMAGE_DATA_DIRECTORY *Dir;
-
- for (Index = 0; 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;
-
- for (RelIdx = 0; RelIdx < RelShdr->sh_size; RelIdx += RelShdr->sh_entsize) {
- Elf_Rela *Rel = (Elf_Rela *)((UINT8*)mEhdr + RelShdr->sh_offset + RelIdx);
-
- if (mEhdr->e_machine == EM_X86_64) {
- switch (ELF_R_TYPE(Rel->r_info)) {
- case R_X86_64_NONE:
- case R_X86_64_PC32:
- case R_X86_64_PLT32:
- 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 if (mEhdr->e_machine == EM_AARCH64) {
-
- switch (ELF_R_TYPE(Rel->r_info)) {
- case R_AARCH64_ADR_PREL_LO21:
- case R_AARCH64_CONDBR19:
- case R_AARCH64_LD_PREL_LO19:
- case R_AARCH64_CALL26:
- case R_AARCH64_JUMP26:
- case R_AARCH64_PREL64:
- case R_AARCH64_PREL32:
- case R_AARCH64_PREL16:
- case R_AARCH64_ADR_PREL_PG_HI21:
- case R_AARCH64_ADD_ABS_LO12_NC:
- case R_AARCH64_LDST8_ABS_LO12_NC:
- case R_AARCH64_LDST16_ABS_LO12_NC:
- case R_AARCH64_LDST32_ABS_LO12_NC:
- case R_AARCH64_LDST64_ABS_LO12_NC:
- case R_AARCH64_LDST128_ABS_LO12_NC:
- //
- // No fixups are required for relative relocations, provided that
- // the relative offsets between sections have been preserved in
- // the ELF to PE/COFF conversion. We have already asserted that
- // this is the case in WriteSections64 ().
- //
- break;
-
- case R_AARCH64_ABS64:
- CoffAddFixup(
- (UINT32) ((UINT64) mCoffSectionsOffset[RelShdr->sh_info]
- + (Rel->r_offset - SecShdr->sh_addr)),
- EFI_IMAGE_REL_BASED_DIR64);
- break;
-
- case R_AARCH64_ABS32:
- 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", "WriteRelocations64(): %s unsupported ELF EM_AARCH64 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;
- 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;
-
- Dir = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY*)(mCoffFile + mDebugOffset);
- Dir->Type = EFI_IMAGE_DEBUG_TYPE_CODEVIEW;
- Dir->SizeOfData = sizeof(EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY) + Len;
- Dir->RVA = mDebugOffset + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
- Dir->FileOffset = mDebugOffset + 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 = mDebugOffset;
- DataDir->Size = Dir->SizeOfData + sizeof(EFI_IMAGE_DEBUG_DIRECTORY_ENTRY);
-}
-
-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);
- }
-}
-
-
|