X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=BaseTools%2FSource%2FC%2FGenFw%2FElf64Convert.c;h=90351125893d083392947337c058e19d98cb3ac1;hb=ecbaa856da0c94b7054f795d001ee3f5aaee033e;hp=fbe6ff8232e13c81239e18a3effdfb932566c82b;hpb=da92f27632d2c89fa8726948ac9b02461ca8b61e;p=mirror_edk2.git diff --git a/BaseTools/Source/C/GenFw/Elf64Convert.c b/BaseTools/Source/C/GenFw/Elf64Convert.c index fbe6ff8232..9035112589 100644 --- a/BaseTools/Source/C/GenFw/Elf64Convert.c +++ b/BaseTools/Source/C/GenFw/Elf64Convert.c @@ -1,798 +1,1340 @@ -/** @file - -Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.
- -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 -#include -#endif -#include -#include -#include -#include -#include - -#include -#include - -#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; - UINT32 SectionCount; - - 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; - 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 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; - SectionCount ++; - } - } - - if (mEhdr->e_machine != EM_ARM) { - 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; - 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 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; - SectionCount ++; - } - } - mCoffOffset = CoffAlign(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 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 +Elf64 convert solution + +Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.
+Portions copyright (c) 2013-2014, ARM Ltd. All rights reserved.
+ +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 +#include +#endif +#include +#include +#include +#include +#include +#include + +#include +#include + +#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; + +// +// GOT information +// +STATIC Elf_Shdr *mGOTShdr = NULL; +STATIC UINT32 mGOTShindex = 0; +STATIC UINT32 *mGOTCoffEntries = NULL; +STATIC UINT32 mGOTMaxCoffEntries = 0; +STATIC UINT32 mGOTNumCoffEntries = 0; + +// +// 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; +} + +// +// Find the ELF section hosting the GOT from an ELF Rva +// of a single GOT entry. Normally, GOT is placed in +// ELF .text section, so assume once we find in which +// section the GOT is, all GOT entries are there, and +// just verify this. +// +STATIC +VOID +FindElfGOTSectionFromGOTEntryElfRva ( + Elf64_Addr GOTEntryElfRva + ) +{ + UINT32 i; + if (mGOTShdr != NULL) { + if (GOTEntryElfRva >= mGOTShdr->sh_addr && + GOTEntryElfRva < mGOTShdr->sh_addr + mGOTShdr->sh_size) { + return; + } + Error (NULL, 0, 3000, "Unsupported", "FindElfGOTSectionFromGOTEntryElfRva: GOT entries found in multiple sections."); + exit(EXIT_FAILURE); + } + for (i = 0; i < mEhdr->e_shnum; i++) { + Elf_Shdr *shdr = GetShdrByIndex(i); + if (GOTEntryElfRva >= shdr->sh_addr && + GOTEntryElfRva < shdr->sh_addr + shdr->sh_size) { + mGOTShdr = shdr; + mGOTShindex = i; + return; + } + } + Error (NULL, 0, 3000, "Invalid", "FindElfGOTSectionFromGOTEntryElfRva: ElfRva 0x%016LX for GOT entry not found in any section.", GOTEntryElfRva); + exit(EXIT_FAILURE); +} + +// +// Stores locations of GOT entries in COFF image. +// Returns TRUE if GOT entry is new. +// Simple implementation as number of GOT +// entries is expected to be low. +// + +STATIC +BOOLEAN +AccumulateCoffGOTEntries ( + UINT32 GOTCoffEntry + ) +{ + UINT32 i; + if (mGOTCoffEntries != NULL) { + for (i = 0; i < mGOTNumCoffEntries; i++) { + if (mGOTCoffEntries[i] == GOTCoffEntry) { + return FALSE; + } + } + } + if (mGOTCoffEntries == NULL) { + mGOTCoffEntries = (UINT32*)malloc(5 * sizeof *mGOTCoffEntries); + if (mGOTCoffEntries == NULL) { + Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!"); + } + assert (mGOTCoffEntries != NULL); + mGOTMaxCoffEntries = 5; + mGOTNumCoffEntries = 0; + } else if (mGOTNumCoffEntries == mGOTMaxCoffEntries) { + mGOTCoffEntries = (UINT32*)realloc(mGOTCoffEntries, 2 * mGOTMaxCoffEntries * sizeof *mGOTCoffEntries); + if (mGOTCoffEntries == NULL) { + Error (NULL, 0, 4001, "Resource", "memory cannot be allocated!"); + } + assert (mGOTCoffEntries != NULL); + mGOTMaxCoffEntries += mGOTMaxCoffEntries; + } + mGOTCoffEntries[mGOTNumCoffEntries++] = GOTCoffEntry; + return TRUE; +} + +// +// 32-bit Unsigned integer comparator for qsort. +// +STATIC +int +UINT32Comparator ( + const void* lhs, + const void* rhs + ) +{ + if (*(const UINT32*)lhs < *(const UINT32*)rhs) { + return -1; + } + return *(const UINT32*)lhs > *(const UINT32*)rhs; +} + +// +// Emit accumulated Coff GOT entry relocations into +// Coff image. This function performs its job +// once and then releases the entry list, so +// it can safely be called multiple times. +// +STATIC +VOID +EmitGOTRelocations ( + VOID + ) +{ + UINT32 i; + if (mGOTCoffEntries == NULL) { + return; + } + // + // Emit Coff relocations with Rvas ordered. + // + qsort( + mGOTCoffEntries, + mGOTNumCoffEntries, + sizeof *mGOTCoffEntries, + UINT32Comparator); + for (i = 0; i < mGOTNumCoffEntries; i++) { + VerboseMsg ("EFI_IMAGE_REL_BASED_DIR64 Offset: 0x%08X", mGOTCoffEntries[i]); + CoffAddFixup( + mGOTCoffEntries[i], + EFI_IMAGE_REL_BASED_DIR64); + } + free(mGOTCoffEntries); + mGOTCoffEntries = NULL; + mGOTMaxCoffEntries = 0; + mGOTNumCoffEntries = 0; +} + +// +// 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; + } + } + + // + // Check if mCoffAlignment is larger than MAX_COFF_ALIGNMENT + // + if (mCoffAlignment > MAX_COFF_ALIGNMENT) { + Error (NULL, 0, 3000, "Invalid", "Section alignment is larger than MAX_COFF_ALIGNMENT."); + assert (FALSE); + } + + + // + // 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 *); + Elf64_Addr GOTEntryRva; + + // + // 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. */ + if (Shdr->sh_offset + Shdr->sh_size > mFileBufferSize) { + return FALSE; + } + 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, + // 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 *)""; + } + + 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; + case R_X86_64_GOTPCREL: + case R_X86_64_GOTPCRELX: + case R_X86_64_REX_GOTPCRELX: + VerboseMsg ("R_X86_64_GOTPCREL family"); + VerboseMsg ("Offset: 0x%08X, Addend: 0x%08X", + (UINT32)(SecOffset + (Rel->r_offset - SecShdr->sh_addr)), + *(UINT32 *)Targ); + GOTEntryRva = Rel->r_offset - Rel->r_addend + *(INT32 *)Targ; + FindElfGOTSectionFromGOTEntryElfRva(GOTEntryRva); + *(UINT32 *)Targ = (UINT32) (*(UINT32 *)Targ + + (mCoffSectionsOffset[mGOTShindex] - mGOTShdr->sh_addr) + - (SecOffset - SecShdr->sh_addr)); + VerboseMsg ("Relocation: 0x%08X", *(UINT32 *)Targ); + GOTEntryRva += (mCoffSectionsOffset[mGOTShindex] - mGOTShdr->sh_addr); // ELF Rva -> COFF Rva + if (AccumulateCoffGOTEntries((UINT32)GOTEntryRva)) { + // + // Relocate GOT entry if it's the first time we run into it + // + Targ = mCoffFile + GOTEntryRva; + // + // Limitation: The following three statements assume memory + // at *Targ is valid because the section containing the GOT + // has already been copied from the ELF image to the Coff image. + // This pre-condition presently holds because the GOT is placed + // in section .text, and the ELF text sections are all copied + // prior to reaching this point. + // If the pre-condition is violated in the future, this fixup + // either needs to be deferred after the GOT section is copied + // to the Coff image, or the fixup should be performed on the + // source Elf image instead of the destination Coff image. + // + VerboseMsg ("Offset: 0x%08X, Addend: 0x%016LX", + (UINT32)GOTEntryRva, + *(UINT64 *)Targ); + *(UINT64 *)Targ = *(UINT64 *)Targ - SymShdr->sh_addr + mCoffSectionsOffset[Sym->st_shndx]; + VerboseMsg ("Relocation: 0x%016LX", *(UINT64*)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: + case R_X86_64_GOTPCREL: + case R_X86_64_GOTPCRELX: + case R_X86_64_REX_GOTPCRELX: + 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); + } + } + if (mEhdr->e_machine == EM_X86_64 && RelShdr->sh_info == mGOTShindex) { + // + // Tack relocations for GOT entries after other relocations for + // the section the GOT is in, as it's usually found at the end + // of the section. This is done in order to maintain Rva order + // of Coff relocations. + // + EmitGOTRelocations(); + } + } + } + } + + if (mEhdr->e_machine == EM_X86_64) { + // + // This is a safety net just in case the GOT is in a section + // with no other relocations and the first invocation of + // EmitGOTRelocations() above was skipped. This invocation + // does not maintain Rva order of Coff relocations. + // At present, with a single text section, all references to + // the GOT and the GOT itself reside in section .text, so + // if there's a GOT at all, the first invocation above + // is executed. + // + EmitGOTRelocations(); + } + // + // 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 = 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); + } +} + +