[edk2-devel] [PATCH v2 2/3] UefiPayloadPkg: Add PayloadLoaderPeim which can load ELF payload
Marvin Häuser
mhaeuser at posteo.de
Mon Jun 7 21:53:03 UTC 2021
Good day everyone,
Sorry that I comment with insufficient review, I am a bit low on time.
However I have been working with the PE code in EDK II code for a while
and thought I could share some comments based on my experiences with it.
I tried to mainly outline the kind of issues, my picks are not
comprehensive or overly thorough, hope it's useful nevertheless. I would
be really glad if revisions were possible before this set lands.
Comments are inline.
Thanks for your time!
Best regards,
Marvin
On 03.06.21 08:22, Ni, Ray wrote:
> Per universal payload spec, the payload is in ELF format.
> The patch adds a payload loader that supports to load ELF image.
>
> The location of extra data sections whose names start with "upld."
> is stored in PLD_EXTRA_DATA HOB.
>
> Signed-off-by: Maurice Ma <maurice.ma at intel.com>
> Signed-off-by: Ray Ni <ray.ni at intel.com>
> Cc: Maurice Ma <maurice.ma at intel.com>
> Cc: Guo Dong <guo.dong at intel.com>
> Cc: Benjamin You <benjamin.you at intel.com>
> ---
> UefiPayloadPkg/PayloadLoaderPeim/ElfLib.h | 122 +++
> .../PayloadLoaderPeim/ElfLib/Elf32.h | 252 +++++
> .../PayloadLoaderPeim/ElfLib/Elf32Lib.c | 451 ++++++++
> .../PayloadLoaderPeim/ElfLib/Elf64.h | 254 +++++
> .../PayloadLoaderPeim/ElfLib/Elf64Lib.c | 460 ++++++++
> .../PayloadLoaderPeim/ElfLib/ElfCommon.h | 983 ++++++++++++++++++
> .../PayloadLoaderPeim/ElfLib/ElfLib.c | 473 +++++++++
> .../PayloadLoaderPeim/ElfLib/ElfLibInternal.h | 109 ++
> .../PayloadLoaderPeim/PayloadLoaderPeim.c | 187 ++++
> .../PayloadLoaderPeim/PayloadLoaderPeim.inf | 59 ++
> 10 files changed, 3350 insertions(+)
> create mode 100644 UefiPayloadPkg/PayloadLoaderPeim/ElfLib.h
> create mode 100644 UefiPayloadPkg/PayloadLoaderPeim/ElfLib/Elf32.h
> create mode 100644 UefiPayloadPkg/PayloadLoaderPeim/ElfLib/Elf32Lib.c
> create mode 100644 UefiPayloadPkg/PayloadLoaderPeim/ElfLib/Elf64.h
> create mode 100644 UefiPayloadPkg/PayloadLoaderPeim/ElfLib/Elf64Lib.c
> create mode 100644 UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfCommon.h
> create mode 100644 UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfLib.c
> create mode 100644 UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfLibInternal.h
> create mode 100644 UefiPayloadPkg/PayloadLoaderPeim/PayloadLoaderPeim.c
> create mode 100644 UefiPayloadPkg/PayloadLoaderPeim/PayloadLoaderPeim.inf
>
> diff --git a/UefiPayloadPkg/PayloadLoaderPeim/ElfLib.h b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib.h
> new file mode 100644
> index 0000000000..9cfc2912cf
> --- /dev/null
> +++ b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib.h
> @@ -0,0 +1,122 @@
> +/** @file
> + ELF library
> +
> + Copyright (c) 2018 - 2021, Intel Corporation. All rights reserved.<BR>
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#ifndef ELF_LIB_H_
> +#define ELF_LIB_H_
> +
> +#include <PiPei.h>
> +
> +#define ELF_CLASS32 1
> +#define ELF_CLASS64 2
> +
> +#define ELF_PT_LOAD 1
> +
> +typedef struct {
> + RETURN_STATUS ParseStatus; ///< Return the status after ParseElfImage().
> + UINT8 *FileBase; ///< The source location in memory.
> + UINTN FileSize; ///< The size including sections that don't require loading.
> + UINT8 *PreferredImageAddress; ///< The preferred image to be loaded. No relocation is needed if loaded to this address.
> + BOOLEAN ReloadRequired; ///< The image needs a new memory location for running.
> + UINT8 *ImageAddress; ///< The destination memory address set by caller.
> + UINTN ImageSize; ///< The memory size for loading and execution.
> + UINT32 EiClass;
> + UINT32 ShNum;
> + UINT32 PhNum;
> + UINTN ShStrOff;
> + UINTN ShStrLen;
> + UINTN EntryPoint; ///< Return the actual entry point after LoadElfImage().
> +} ELF_IMAGE_CONTEXT;
> +
> +
> +typedef struct {
> + UINT32 PtType;
> + UINTN Offset;
> + UINTN Length;
> + UINTN MemLen;
> + UINTN MemAddr;
> + UINTN Alignment;
> +} SEGMENT_INFO;
> +
> +/**
> + Parse the ELF image info.
> +
> + @param[in] ImageBase Memory address of an image.
> + @param[out] ElfCt The EFL image context pointer.
> +
> + @retval EFI_INVALID_PARAMETER Input parameters are not valid.
> + @retval EFI_UNSUPPORTED Unsupported binary type.
> + @retval EFI_LOAD_ERROR ELF binary loading error.
> + @retval EFI_SUCCESS ELF binary is loaded successfully.
> +**/
> +EFI_STATUS
> +EFIAPI
> +ParseElfImage (
> + IN VOID *ImageBase,
> + OUT ELF_IMAGE_CONTEXT *ElfCt
> + );
> +
> +/**
> + Load the ELF segments to specified address in ELF header.
> +
> + This function loads ELF image segments into memory address specified
> + in ELF program header.
> +
> + @param[in] ElfCt ELF image context pointer.
> +
> + @retval EFI_INVALID_PARAMETER Input parameters are not valid.
> + @retval EFI_UNSUPPORTED Unsupported binary type.
> + @retval EFI_LOAD_ERROR ELF binary loading error.
> + @retval EFI_SUCCESS ELF binary is loaded successfully.
> +**/
> +EFI_STATUS
> +EFIAPI
> +LoadElfImage (
> + IN ELF_IMAGE_CONTEXT *ElfCt
> + );
> +
> +/**
> + Get a ELF section name from its index.
> +
> + @param[in] ElfCt ELF image context pointer.
> + @param[in] SectionIndex ELF section index.
> + @param[out] SectionName The pointer to the section name.
> +
> + @retval EFI_INVALID_PARAMETER ElfCt or SecName is NULL.
> + @retval EFI_NOT_FOUND Could not find the section.
> + @retval EFI_SUCCESS Section name was filled successfully.
> +**/
> +EFI_STATUS
> +EFIAPI
> +GetElfSectionName (
> + IN ELF_IMAGE_CONTEXT *ElfCt,
> + IN UINT32 SectionIndex,
> + OUT CHAR8 **SectionName
> + );
> +
> +/**
> + Get the offset and size of x-th ELF section.
> +
> + @param[in] ElfCt ELF image context pointer.
> + @param[in] Index ELF section index.
> + @param[out] Offset Return the offset of the specific section.
> + @param[out] Size Return the size of the specific section.
> +
> + @retval EFI_INVALID_PARAMETER ImageBase, Offset or Size is NULL.
> + @retval EFI_INVALID_PARAMETER EiClass doesn't equal to ELFCLASS32 or ELFCLASS64.
> + @retval EFI_NOT_FOUND Could not find the section.
> + @retval EFI_SUCCESS Offset and Size are returned.
> +**/
> +EFI_STATUS
> +EFIAPI
> +GetElfSectionPos (
> + IN ELF_IMAGE_CONTEXT *ElfCt,
> + IN UINT32 Index,
> + OUT UINTN *Offset,
> + OUT UINTN *Size
> + );
> +#endif /* ELF_LIB_H_ */
> diff --git a/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/Elf32.h b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/Elf32.h
> new file mode 100644
> index 0000000000..ebed5f00c3
> --- /dev/null
> +++ b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/Elf32.h
> @@ -0,0 +1,252 @@
> +/** @file
> +Ported ELF include files from FreeBSD
> +
> +Copyright (c) 2009 - 2010, Apple Inc. All rights reserved.<BR>
> +SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +
> +**/
> +/*-
> + * Copyright (c) 1996-1998 John D. Polstra.
> + * All rights reserved.
> + *
> + * Redistribution and use in source and binary forms, with or without
> + * modification, are permitted provided that the following conditions
> + * are met:
> + * 1. Redistributions of source code must retain the above copyright
> + * notice, this list of conditions and the following disclaimer.
> + * 2. Redistributions in binary form must reproduce the above copyright
> + * notice, this list of conditions and the following disclaimer in the
> + * documentation and/or other materials provided with the distribution.
> + *
> + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
> + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
> + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
> + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
> + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
> + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
> + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
> + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
> + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
> + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
> + * SUCH DAMAGE.
> + *
> + * $FreeBSD: src/sys/sys/elf32.h,v 1.8.14.2 2007/12/03 21:30:36 marius Exp $
> + */
> +
> +#ifndef _SYS_ELF32_H_
> +#define _SYS_ELF32_H_ 1
> +
> +
> +/*
> + * ELF definitions common to all 32-bit architectures.
> + */
> +
> +typedef UINT32 Elf32_Addr;
> +typedef UINT16 Elf32_Half;
> +typedef UINT32 Elf32_Off;
> +typedef INT32 Elf32_Sword;
> +typedef UINT32 Elf32_Word;
> +typedef UINT64 Elf32_Lword;
> +
> +typedef Elf32_Word Elf32_Hashelt;
> +
> +/* Non-standard class-dependent datatype used for abstraction. */
> +typedef Elf32_Word Elf32_Size;
> +typedef Elf32_Sword Elf32_Ssize;
> +
> +/*
> + * ELF header.
> + */
> +
> +typedef struct {
> + unsigned char e_ident[EI_NIDENT]; /* File identification. */
> + Elf32_Half e_type; /* File type. */
> + Elf32_Half e_machine; /* Machine architecture. */
> + Elf32_Word e_version; /* ELF format version. */
> + Elf32_Addr e_entry; /* Entry point. */
> + Elf32_Off e_phoff; /* Program header file offset. */
> + Elf32_Off e_shoff; /* Section header file offset. */
> + Elf32_Word e_flags; /* Architecture-specific flags. */
> + Elf32_Half e_ehsize; /* Size of ELF header in bytes. */
> + Elf32_Half e_phentsize; /* Size of program header entry. */
> + Elf32_Half e_phnum; /* Number of program header entries. */
> + Elf32_Half e_shentsize; /* Size of section header entry. */
> + Elf32_Half e_shnum; /* Number of section header entries. */
> + Elf32_Half e_shstrndx; /* Section name strings section. */
> +} Elf32_Ehdr;
> +
> +/*
> + * Section header.
> + */
> +
> +typedef struct {
> + Elf32_Word sh_name; /* Section name (index into the
> + section header string table). */
> + Elf32_Word sh_type; /* Section type. */
> + Elf32_Word sh_flags; /* Section flags. */
> + Elf32_Addr sh_addr; /* Address in memory image. */
> + Elf32_Off sh_offset; /* Offset in file. */
> + Elf32_Word sh_size; /* Size in bytes. */
> + Elf32_Word sh_link; /* Index of a related section. */
> + Elf32_Word sh_info; /* Depends on section type. */
> + Elf32_Word sh_addralign; /* Alignment in bytes. */
> + Elf32_Word sh_entsize; /* Size of each entry in section. */
> +} Elf32_Shdr;
> +
> +/*
> + * Program header.
> + */
> +
> +typedef struct {
> + Elf32_Word p_type; /* Entry type. */
> + Elf32_Off p_offset; /* File offset of contents. */
> + Elf32_Addr p_vaddr; /* Virtual address in memory image. */
> + Elf32_Addr p_paddr; /* Physical address (not used). */
> + Elf32_Word p_filesz; /* Size of contents in file. */
> + Elf32_Word p_memsz; /* Size of contents in memory. */
> + Elf32_Word p_flags; /* Access permission flags. */
> + Elf32_Word p_align; /* Alignment in memory and file. */
> +} Elf32_Phdr;
> +
> +/*
> + * Dynamic structure. The ".dynamic" section contains an array of them.
> + */
> +
> +typedef struct {
> + Elf32_Sword d_tag; /* Entry type. */
> + union {
> + Elf32_Word d_val; /* Integer value. */
> + Elf32_Addr d_ptr; /* Address value. */
> + } d_un;
> +} Elf32_Dyn;
> +
> +/*
> + * Relocation entries.
> + */
> +
> +/* Relocations that don't need an addend field. */
> +typedef struct {
> + Elf32_Addr r_offset; /* Location to be relocated. */
> + Elf32_Word r_info; /* Relocation type and symbol index. */
> +} Elf32_Rel;
> +
> +/* Relocations that need an addend field. */
> +typedef struct {
> + Elf32_Addr r_offset; /* Location to be relocated. */
> + Elf32_Word r_info; /* Relocation type and symbol index. */
> + Elf32_Sword r_addend; /* Addend. */
> +} Elf32_Rela;
> +
> +/* Macros for accessing the fields of r_info. */
> +#define ELF32_R_SYM(info) ((info) >> 8)
> +#define ELF32_R_TYPE(info) ((unsigned char)(info))
> +
> +/* Macro for constructing r_info from field values. */
> +#define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type))
> +
> +/*
> + * Note entry header
> + */
> +typedef Elf_Note Elf32_Nhdr;
> +
> +/*
> + * Move entry
> + */
> +typedef struct {
> + Elf32_Lword m_value; /* symbol value */
> + Elf32_Word m_info; /* size + index */
> + Elf32_Word m_poffset; /* symbol offset */
> + Elf32_Half m_repeat; /* repeat count */
> + Elf32_Half m_stride; /* stride info */
> +} Elf32_Move;
> +
> +/*
> + * The macros compose and decompose values for Move.r_info
> + *
> + * sym = ELF32_M_SYM(M.m_info)
> + * size = ELF32_M_SIZE(M.m_info)
> + * M.m_info = ELF32_M_INFO(sym, size)
> + */
> +#define ELF32_M_SYM(info) ((info)>>8)
> +#define ELF32_M_SIZE(info) ((unsigned char)(info))
> +#define ELF32_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size))
> +
> +/*
> + * Hardware/Software capabilities entry
> + */
> +typedef struct {
> + Elf32_Word c_tag; /* how to interpret value */
> + union {
> + Elf32_Word c_val;
> + Elf32_Addr c_ptr;
> + } c_un;
> +} Elf32_Cap;
> +
> +/*
> + * Symbol table entries.
> + */
> +
> +typedef struct {
> + Elf32_Word st_name; /* String table index of name. */
> + Elf32_Addr st_value; /* Symbol value. */
> + Elf32_Word st_size; /* Size of associated object. */
> + unsigned char st_info; /* Type and binding information. */
> + unsigned char st_other; /* Reserved (not used). */
> + Elf32_Half st_shndx; /* Section index of symbol. */
> +} Elf32_Sym;
> +
> +/* Macros for accessing the fields of st_info. */
> +#define ELF32_ST_BIND(info) ((info) >> 4)
> +#define ELF32_ST_TYPE(info) ((info) & 0xf)
> +
> +/* Macro for constructing st_info from field values. */
> +#define ELF32_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
> +
> +/* Macro for accessing the fields of st_other. */
> +#define ELF32_ST_VISIBILITY(oth) ((oth) & 0x3)
> +
> +/* Structures used by Sun & GNU symbol versioning. */
> +typedef struct
> +{
> + Elf32_Half vd_version;
> + Elf32_Half vd_flags;
> + Elf32_Half vd_ndx;
> + Elf32_Half vd_cnt;
> + Elf32_Word vd_hash;
> + Elf32_Word vd_aux;
> + Elf32_Word vd_next;
> +} Elf32_Verdef;
> +
> +typedef struct
> +{
> + Elf32_Word vda_name;
> + Elf32_Word vda_next;
> +} Elf32_Verdaux;
> +
> +typedef struct
> +{
> + Elf32_Half vn_version;
> + Elf32_Half vn_cnt;
> + Elf32_Word vn_file;
> + Elf32_Word vn_aux;
> + Elf32_Word vn_next;
> +} Elf32_Verneed;
> +
> +typedef struct
> +{
> + Elf32_Word vna_hash;
> + Elf32_Half vna_flags;
> + Elf32_Half vna_other;
> + Elf32_Word vna_name;
> + Elf32_Word vna_next;
> +} Elf32_Vernaux;
> +
> +typedef Elf32_Half Elf32_Versym;
> +
> +typedef struct {
> + Elf32_Half si_boundto; /* direct bindings - symbol bound to */
> + Elf32_Half si_flags; /* per symbol flags */
> +} Elf32_Syminfo;
> +
> +#endif /* !_SYS_ELF32_H_ */
> diff --git a/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/Elf32Lib.c b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/Elf32Lib.c
> new file mode 100644
> index 0000000000..3fa100ce4a
> --- /dev/null
> +++ b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/Elf32Lib.c
> @@ -0,0 +1,451 @@
> +/** @file
> + ELF library
> +
> + Copyright (c) 2019 - 2021, Intel Corporation. All rights reserved.<BR>
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include "ElfLibInternal.h"
> +
> +/**
> + Return the section header specified by Index.
> +
> + @param ImageBase The image base.
> + @param Index The section index.
> +
> + @return Pointer to the section header.
> +**/
> +Elf32_Shdr *
> +GetElf32SectionByIndex (
> + IN UINT8 *ImageBase,
> + IN UINT32 Index
> + )
> +{
> + Elf32_Ehdr *Ehdr;
> +
> + Ehdr = (Elf32_Ehdr *)ImageBase;
> + if (Index >= Ehdr->e_shnum) {
> + return NULL;
> + }
> +
> + return (Elf32_Shdr *)(ImageBase + Ehdr->e_shoff + Index * Ehdr->e_shentsize);
> +}
> +
> +/**
> + Return the segment header specified by Index.
> +
> + @param ImageBase The image base.
> + @param Index The segment index.
> +
> + @return Pointer to the segment header.
> +**/
> +Elf32_Phdr *
> +GetElf32SegmentByIndex (
> + IN UINT8 *ImageBase,
> + IN UINT32 Index
> + )
> +{
> + Elf32_Ehdr *Ehdr;
> +
> + Ehdr = (Elf32_Ehdr *)ImageBase;
> + if (Index >= Ehdr->e_phnum) {
> + return NULL;
> + }
> +
> + return (Elf32_Phdr *)(ImageBase + Ehdr->e_phoff + Index * Ehdr->e_phentsize);
> +}
> +
> +/**
> + Return the section header specified by the range.
> +
> + @param ImageBase The image base.
> + @param Offset The section offset.
> + @param Size The section size.
> +
> + @return Pointer to the section header.
> +**/
> +Elf32_Shdr *
> +GetElf32SectionByRange (
> + IN UINT8 *ImageBase,
> + IN UINT32 Offset,
> + IN UINT32 Size
> + )
> +{
> + UINT32 Index;
> + Elf32_Ehdr *Ehdr;
> + Elf32_Shdr *Shdr;
> +
> + Ehdr = (Elf32_Ehdr *)ImageBase;
> +
> + Shdr = (Elf32_Shdr *) (ImageBase + Ehdr->e_shoff);
> + for (Index = 0; Index < Ehdr->e_shnum; Index++) {
> + if ((Shdr->sh_offset == Offset) && (Shdr->sh_size == Size)) {
> + return Shdr;
> + }
> + Shdr = ELF_NEXT_ENTRY (Elf32_Shdr, Shdr, Ehdr->e_shentsize);
> + }
> + return NULL;
> +}
> +
> +/**
> + Fix up the image based on the relocation entries.
> +
> + @param Rela Relocation entries.
> + @param RelaSize Total size of relocation entries.
> + @param RelaEntrySize Relocation entry size.
> + @param RelaType Type of relocation entry.
> + @param Delta The delta between preferred image base and the actual image base.
> + @param DynamicLinking TRUE when fixing up according to dynamic relocation.
> +
> + @retval EFI_SUCCESS The image fix up is processed successfully.
> +**/
> +EFI_STATUS
> +ProcessRelocation32 (
> + IN Elf32_Rela *Rela,
> + IN UINT32 RelaSize,
> + IN UINT32 RelaEntrySize,
> + IN UINT32 RelaType,
> + IN INTN Delta,
> + IN BOOLEAN DynamicLinking
> + )
> +{
> + UINTN Index;
> + UINT32 *Ptr;
> + UINT32 Type;
> +
> + for ( Index = 0
> + ; RelaEntrySize * Index < RelaSize
Overflow?
> + ; Index++, Rela = ELF_NEXT_ENTRY (Elf32_Rela, Rela, RelaEntrySize)
> + ) {
> + //
> + // r_offset is the virtual address of the storage unit affected by the relocation.
> + //
> + Ptr = (UINT32 *)(UINTN)(Rela->r_offset + Delta);
Alignment?
> + Type = ELF32_R_TYPE(Rela->r_info);
> + switch (Type) {
> + case R_386_NONE:
> + case R_386_PC32:
> + //
> + // No fixup entry required.
> + //
> + break;
> +
> + case R_386_32:
> + if (DynamicLinking) {
> + //
> + // Dynamic section doesn't contain entries of this type.
> + //
> + DEBUG ((DEBUG_INFO, "Unsupported relocation type %02X\n", Type));
> + ASSERT (FALSE);
> + } else {
> + *Ptr += (UINT32) Delta;
> + }
> + break;
> +
> + case R_386_RELATIVE:
> + if (DynamicLinking) {
> + //
> + // A: Represents the addend used to compute the value of the relocatable field.
> + // B: Represents the base address at which a shared object has been loaded into memory during execution.
> + // Generally, a shared object is built with a 0 base virtual address, but the execution address will be different.
> + //
> + // B (Base Address) in ELF spec is slightly different:
> + // An executable or shared object file's base address (on platforms that support the concept) is calculated during
> + // execution from three values: the virtual memory load address, the maximum page size, and the lowest virtual address
> + // of a program's loadable segment. To compute the base address, one determines the memory address associated with the
> + // lowest p_vaddr value for a PT_LOAD segment. This address is truncated to the nearest multiple of the maximum page size.
> + // The corresponding p_vaddr value itself is also truncated to the nearest multiple of the maximum page size.
> + //
> + // *** The base address is the difference between the truncated memory address and the truncated p_vaddr value. ***
> + //
> + // Delta in this function is B.
> + //
> + // Calculation: B + A
> + //
> + if (RelaType == SHT_RELA) {
> + ASSERT (*Ptr == 0);
> + *Ptr = (UINT32) Delta + Rela->r_addend;
> + } else {
> + //
> + // A is stored in the field of relocation for REL type.
> + //
> + *Ptr = (UINT32) Delta + *Ptr;
> + }
> + } else {
> + //
> + // non-Dynamic section doesn't contain entries of this type.
> + //
> + DEBUG ((DEBUG_INFO, "Unsupported relocation type %02X\n", Type));
> + ASSERT (FALSE);
> + }
> + break;
> +
> + default:
> + DEBUG ((DEBUG_INFO, "Unsupported relocation type %02X\n", Type));
> + }
> + }
Out of pure interest, if performance is a concern, have you profiled
this code vs one with two loops and "DynamicLinking" pulled out?
> + return EFI_SUCCESS;
> +}
> +
> +/**
> + Relocate the DYN type image.
> +
> + @param ElfCt Point to image context.
> +
> + @retval EFI_SUCCESS The relocation succeeds.
> + @retval EFI_UNSUPPORTED The image doesn't contain a dynamic section.
> +**/
> +EFI_STATUS
> +RelocateElf32Dynamic (
> + IN ELF_IMAGE_CONTEXT *ElfCt
> + )
> +{
> + UINT32 Index;
> + Elf32_Phdr *Phdr;
> + Elf32_Shdr *DynShdr;
> + Elf32_Shdr *RelShdr;
> + Elf32_Dyn *Dyn;
> + UINT32 RelaOffset;
> + UINT32 RelaCount;
> + UINT32 RelaSize;
> + UINT32 RelaEntrySize;
> + UINT32 RelaType;
> +
> + //
> + // 1. Locate the dynamic section.
> + //
> + // If an object file participates in dynamic linking, its program header table
> + // will have an element of type PT_DYNAMIC.
> + // This ``segment'' contains the .dynamic section. A special symbol, _DYNAMIC,
> + // labels the section, which contains an array of Elf32_Dyn or Elf64_Dyn.
> + //
> + DynShdr = NULL;
> + for (Index = 0; Index < ElfCt->PhNum; Index++) {
> + Phdr = GetElf32SegmentByIndex (ElfCt->FileBase, Index);
> + ASSERT (Phdr != NULL);
> + if (Phdr->p_type == PT_DYNAMIC) {
> + //
> + // Verify the existence of the dynamic section.
> + //
> + DynShdr = GetElf32SectionByRange (ElfCt->FileBase, Phdr->p_offset, Phdr->p_filesz);
> + break;
> + }
> + }
> +
> + //
> + // It's abnormal a DYN ELF doesn't contain a dynamic section.
> + //
> + ASSERT (DynShdr != NULL);
> + if (DynShdr == NULL) {
> + return EFI_UNSUPPORTED;
> + }
> + ASSERT (DynShdr->sh_type == SHT_DYNAMIC);
> + ASSERT (DynShdr->sh_entsize >= sizeof (*Dyn));
Abnormalities in unknown/untrusted data must be filtered with a runtime
check, not with an ASSERT.
> +
> + //
> + // 2. Locate the relocation section from the dynamic section.
> + //
> + RelaOffset = MAX_UINT32;
> + RelaSize = 0;
> + RelaCount = 0;
> + RelaEntrySize = 0;
> + RelaType = 0;
> + for ( Index = 0, Dyn = (Elf32_Dyn *) (ElfCt->FileBase + DynShdr->sh_offset)
> + ; Index < DynShdr->sh_size / DynShdr->sh_entsize
Is "sh_entsize" checked for 0?
> + ; Index++, Dyn = ELF_NEXT_ENTRY (Elf32_Dyn, Dyn, DynShdr->sh_entsize)
> + ) {
> + switch (Dyn->d_tag) {
> + case DT_RELA:
> + case DT_REL:
> + //
> + // DT_REL represent program virtual addresses.
> + // A file's virtual addresses might not match the memory virtual addresses during execution.
> + // When interpreting addresses contained in the dynamic structure, the dynamic linker computes actual addresses,
> + // based on the original file value and the memory base address.
> + // For consistency, files do not contain relocation entries to ``correct'' addresses in the dynamic structure.
> + //
> + RelaOffset = Dyn->d_un.d_ptr - (UINT32) (UINTN) ElfCt->PreferredImageAddress;
> + RelaType = (Dyn->d_tag == DT_RELA) ? SHT_RELA: SHT_REL;
> + break;
> + case DT_RELACOUNT:
> + case DT_RELCOUNT:
> + RelaCount = Dyn->d_un.d_val;
> + break;
> + case DT_RELENT:
> + case DT_RELAENT:
> + RelaEntrySize = Dyn->d_un.d_val;
> + break;
> + case DT_RELSZ:
> + case DT_RELASZ:
> + RelaSize = Dyn->d_un.d_val;
> + break;
> + default:
> + break;
> + }
> + }
> +
> + if (RelaOffset == MAX_UINT64) {
> + ASSERT (RelaCount == 0);
> + ASSERT (RelaEntrySize == 0);
> + ASSERT (RelaSize == 0);
> + //
> + // It's fine that a DYN ELF doesn't contain relocation section.
> + //
> + return EFI_SUCCESS;
> + }
> +
> + //
> + // Verify the existence of the relocation section.
> + //
> + RelShdr = GetElf32SectionByRange (ElfCt->FileBase, RelaOffset, RelaSize);
> + ASSERT (RelShdr != NULL);
> + if (RelShdr == NULL) {
> + return EFI_UNSUPPORTED;
> + }
> + ASSERT (RelShdr->sh_type == RelaType);
> + ASSERT (RelShdr->sh_entsize == RelaEntrySize);
See above.
> +
> + //
> + // 3. Process the relocation section.
> + //
> + ProcessRelocation32 (
> + (Elf32_Rela *) (ElfCt->FileBase + RelShdr->sh_offset),
> + RelShdr->sh_size, RelShdr->sh_entsize, RelShdr->sh_type,
> + (UINTN) ElfCt->ImageAddress - (UINTN) ElfCt->PreferredImageAddress,
> + TRUE
> + );
> + return EFI_SUCCESS;
> +}
> +
> +/**
> + Relocate all sections in a ELF image.
> +
> + @param[in] ElfCt ELF image context pointer.
> +
> + @retval EFI_UNSUPPORTED Relocation is not supported.
> + @retval EFI_SUCCESS ELF image was relocated successfully.
> +**/
> +EFI_STATUS
> +RelocateElf32Sections (
> + IN ELF_IMAGE_CONTEXT *ElfCt
> + )
> +{
> + EFI_STATUS Status;
> + Elf32_Ehdr *Ehdr;
> + Elf32_Shdr *RelShdr;
> + Elf32_Shdr *Shdr;
> + UINT32 Index;
> + UINTN Delta;
> +
> + Ehdr = (Elf32_Ehdr *)ElfCt->FileBase;
> + if (Ehdr->e_machine != EM_386) {
> + return EFI_UNSUPPORTED;
> + }
> +
> + Delta = (UINTN) ElfCt->ImageAddress - (UINTN) ElfCt->PreferredImageAddress;
> + ElfCt->EntryPoint = (UINTN)(Ehdr->e_entry + Delta);
> +
> + //
> + // 1. Relocate dynamic ELF using the relocation section pointed by dynamic section
> + //
> + if (Ehdr->e_type == ET_DYN) {
> + DEBUG ((DEBUG_INFO, "DYN ELF: Relocate using dynamic sections...\n"));
> + Status = RelocateElf32Dynamic (ElfCt);
> + ASSERT_EFI_ERROR (Status);
Why cannot this fail?
> + return Status;
> + }
> +
> + //
> + // 2. Executable ELF: Fix up the delta between actual image address and preferred image address.
> + //
> + // Linker already fixed up EXEC ELF based on the preferred image address.
> + // A ELF loader in modern OS only loads it into the preferred image address.
> + // The below relocation is unneeded in that case.
> + // But the ELF loader in firmware supports to load the image to a different address.
> + // The below relocation is needed in this case.
> + //
> + DEBUG ((DEBUG_INFO, "EXEC ELF: Fix actual/preferred base address delta ...\n"));
> + for ( Index = 0, RelShdr = (Elf32_Shdr *) (ElfCt->FileBase + Ehdr->e_shoff)
> + ; Index < Ehdr->e_shnum
> + ; Index++, RelShdr = ELF_NEXT_ENTRY (Elf32_Shdr, RelShdr, Ehdr->e_shentsize)
> + ) {
> + if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) {
> + continue;
> + }
> + Shdr = GetElf32SectionByIndex (ElfCt->FileBase, RelShdr->sh_info);
> + if ((Shdr->sh_flags & SHF_ALLOC) == SHF_ALLOC) {
> + //
> + // Only fix up sections that occupy memory during process execution.
> + //
> + ProcessRelocation32 (
> + (Elf32_Rela *)((UINT8*)Ehdr + RelShdr->sh_offset),
> + RelShdr->sh_size, RelShdr->sh_entsize, RelShdr->sh_type,
> + Delta, FALSE
> + );
> + }
> + }
> +
> + return EFI_SUCCESS;
> +}
> +
> +/**
> + Load ELF image which has 32-bit architecture.
> +
> + Caller should set Context.ImageAddress to a proper value, either pointing to
> + a new allocated memory whose size equal to Context.ImageSize, or pointing
> + to Context.PreferredImageAddress.
> +
> + @param[in] ElfCt ELF image context pointer.
> +
> + @retval EFI_SUCCESS ELF binary is loaded successfully.
> + @retval Others Loading ELF binary fails.
> +
> +**/
> +EFI_STATUS
> +LoadElf32Image (
> + IN ELF_IMAGE_CONTEXT *ElfCt
> + )
> +{
> + Elf32_Ehdr *Ehdr;
> + Elf32_Phdr *Phdr;
> + UINT16 Index;
> + UINTN Delta;
> +
> + ASSERT (ElfCt != NULL);
> +
> + //
> + // Per the sprit of ELF, loading to memory only consumes info from program headers.
> + //
> + Ehdr = (Elf32_Ehdr *)ElfCt->FileBase;
> +
> + for ( Index = 0, Phdr = (Elf32_Phdr *)(ElfCt->FileBase + Ehdr->e_phoff)
> + ; Index < Ehdr->e_phnum
> + ; Index++, Phdr = ELF_NEXT_ENTRY (Elf32_Phdr, Phdr, Ehdr->e_phentsize)
> + ) {
> + //
> + // Skip segments that don't require load (type tells, or size is 0)
> + //
> + if ((Phdr->p_type != PT_LOAD) ||
> + (Phdr->p_memsz == 0)) {
> + continue;
> + }
> +
> + //
> + // The memory offset of segment relative to the image base
> + // Note: CopyMem() does nothing when the dst equals to src.
> + //
> + Delta = Phdr->p_paddr - (UINT32) (UINTN) ElfCt->PreferredImageAddress;
> + CopyMem (ElfCt->ImageAddress + Delta, ElfCt->FileBase + Phdr->p_offset, Phdr->p_filesz);
> + ZeroMem (ElfCt->ImageAddress + Delta + Phdr->p_filesz, Phdr->p_memsz - Phdr->p_filesz);
> + }
> +
> + //
> + // Relocate when new new image base is not the preferred image base.
> + //
> + if (ElfCt->ImageAddress != ElfCt->PreferredImageAddress) {
> + RelocateElf32Sections (ElfCt);
> + }
> +
> + return EFI_SUCCESS;
> +}
> diff --git a/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/Elf64.h b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/Elf64.h
> new file mode 100644
> index 0000000000..d64dc64a6a
> --- /dev/null
> +++ b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/Elf64.h
> @@ -0,0 +1,254 @@
> +/** @file
> +Ported ELF include files from FreeBSD
> +
> +Copyright (c) 2009 - 2010, Apple Inc. All rights reserved.<BR>
> +SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +/*-
> + * Copyright (c) 1996-1998 John D. Polstra.
> + * All rights reserved.
> + *
> + * Redistribution and use in source and binary forms, with or without
> + * modification, are permitted provided that the following conditions
> + * are met:
> + * 1. Redistributions of source code must retain the above copyright
> + * notice, this list of conditions and the following disclaimer.
> + * 2. Redistributions in binary form must reproduce the above copyright
> + * notice, this list of conditions and the following disclaimer in the
> + * documentation and/or other materials provided with the distribution.
> + *
> + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
> + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
> + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
> + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
> + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
> + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
> + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
> + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
> + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
> + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
> + * SUCH DAMAGE.
> + *
> + * $FreeBSD: src/sys/sys/elf64.h,v 1.10.14.2 2007/12/03 21:30:36 marius Exp $
> + */
> +
> +#ifndef _SYS_ELF64_H_
> +#define _SYS_ELF64_H_ 1
> +
> +
> +/*
> + * ELF definitions common to all 64-bit architectures.
> + */
> +
> +typedef UINT64 Elf64_Addr;
> +typedef UINT16 Elf64_Half;
> +typedef UINT64 Elf64_Off;
> +typedef INT32 Elf64_Sword;
> +typedef INT64 Elf64_Sxword;
> +typedef UINT32 Elf64_Word;
> +typedef UINT64 Elf64_Lword;
> +typedef UINT64 Elf64_Xword;
> +
> +/*
> + * Types of dynamic symbol hash table bucket and chain elements.
> + *
> + * This is inconsistent among 64 bit architectures, so a machine dependent
> + * typedef is required.
> + */
> +
> +typedef Elf64_Word Elf64_Hashelt;
> +
> +/* Non-standard class-dependent datatype used for abstraction. */
> +typedef Elf64_Xword Elf64_Size;
> +typedef Elf64_Sxword Elf64_Ssize;
> +
> +/*
> + * ELF header.
> + */
> +
> +typedef struct {
> + unsigned char e_ident[EI_NIDENT]; /* File identification. */
> + Elf64_Half e_type; /* File type. */
> + Elf64_Half e_machine; /* Machine architecture. */
> + Elf64_Word e_version; /* ELF format version. */
> + Elf64_Addr e_entry; /* Entry point. */
> + Elf64_Off e_phoff; /* Program header file offset. */
> + Elf64_Off e_shoff; /* Section header file offset. */
> + Elf64_Word e_flags; /* Architecture-specific flags. */
> + Elf64_Half e_ehsize; /* Size of ELF header in bytes. */
> + Elf64_Half e_phentsize; /* Size of program header entry. */
> + Elf64_Half e_phnum; /* Number of program header entries. */
> + Elf64_Half e_shentsize; /* Size of section header entry. */
> + Elf64_Half e_shnum; /* Number of section header entries. */
> + Elf64_Half e_shstrndx; /* Section name strings section. */
> +} Elf64_Ehdr;
> +
> +/*
> + * Section header.
> + */
> +
> +typedef struct {
> + Elf64_Word sh_name; /* Section name (index into the
> + section header string table). */
> + Elf64_Word sh_type; /* Section type. */
> + Elf64_Xword sh_flags; /* Section flags. */
> + Elf64_Addr sh_addr; /* Address in memory image. */
> + Elf64_Off sh_offset; /* Offset in file. */
> + Elf64_Xword sh_size; /* Size in bytes. */
> + Elf64_Word sh_link; /* Index of a related section. */
> + Elf64_Word sh_info; /* Depends on section type. */
> + Elf64_Xword sh_addralign; /* Alignment in bytes. */
> + Elf64_Xword sh_entsize; /* Size of each entry in section. */
> +} Elf64_Shdr;
> +
> +/*
> + * Program header.
> + */
> +
> +typedef struct {
> + Elf64_Word p_type; /* Entry type. */
> + Elf64_Word p_flags; /* Access permission flags. */
> + Elf64_Off p_offset; /* File offset of contents. */
> + Elf64_Addr p_vaddr; /* Virtual address in memory image. */
> + Elf64_Addr p_paddr; /* Physical address (not used). */
> + Elf64_Xword p_filesz; /* Size of contents in file. */
> + Elf64_Xword p_memsz; /* Size of contents in memory. */
> + Elf64_Xword p_align; /* Alignment in memory and file. */
> +} Elf64_Phdr;
> +
> +/*
> + * Dynamic structure. The ".dynamic" section contains an array of them.
> + */
> +
> +typedef struct {
> + Elf64_Sxword d_tag; /* Entry type. */
> + union {
> + Elf64_Xword d_val; /* Integer value. */
> + Elf64_Addr d_ptr; /* Address value. */
> + } d_un;
> +} Elf64_Dyn;
> +
> +/*
> + * Relocation entries.
> + */
> +
> +/* Relocations that don't need an addend field. */
> +typedef struct {
> + Elf64_Addr r_offset; /* Location to be relocated. */
> + Elf64_Xword r_info; /* Relocation type and symbol index. */
> +} Elf64_Rel;
> +
> +/* Relocations that need an addend field. */
> +typedef struct {
> + Elf64_Addr r_offset; /* Location to be relocated. */
> + Elf64_Xword r_info; /* Relocation type and symbol index. */
> + Elf64_Sxword r_addend; /* Addend. */
> +} Elf64_Rela;
> +
> +/* Macros for accessing the fields of r_info. */
> +#define ELF64_R_SYM(info) ((UINT32) RShiftU64 ((info), 32))
> +#define ELF64_R_TYPE(info) ((info) & 0xffffffffL)
> +
> +/* Macro for constructing r_info from field values. */
> +#define ELF64_R_INFO(sym, type) (((sym) << 32) + ((type) & 0xffffffffL))
> +
> +#define ELF64_R_TYPE_DATA(info) (((Elf64_Xword)(info)<<32)>>40)
> +#define ELF64_R_TYPE_ID(info) (((Elf64_Xword)(info)<<56)>>56)
> +#define ELF64_R_TYPE_INFO(data, type) \
> + (((Elf64_Xword)(data)<<8)+(Elf64_Xword)(type))
> +
> +/*
> + * Note entry header
> + */
> +typedef Elf_Note Elf64_Nhdr;
> +
> +/*
> + * Move entry
> + */
> +typedef struct {
> + Elf64_Lword m_value; /* symbol value */
> + Elf64_Xword m_info; /* size + index */
> + Elf64_Xword m_poffset; /* symbol offset */
> + Elf64_Half m_repeat; /* repeat count */
> + Elf64_Half m_stride; /* stride info */
> +} Elf64_Move;
> +
> +#define ELF64_M_SYM(info) ((info)>>8)
> +#define ELF64_M_SIZE(info) ((unsigned char)(info))
> +#define ELF64_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size))
> +
> +/*
> + * Hardware/Software capabilities entry
> + */
> +typedef struct {
> + Elf64_Xword c_tag; /* how to interpret value */
> + union {
> + Elf64_Xword c_val;
> + Elf64_Addr c_ptr;
> + } c_un;
> +} Elf64_Cap;
> +
> +/*
> + * Symbol table entries.
> + */
> +
> +typedef struct {
> + Elf64_Word st_name; /* String table index of name. */
> + unsigned char st_info; /* Type and binding information. */
> + unsigned char st_other; /* Reserved (not used). */
> + Elf64_Half st_shndx; /* Section index of symbol. */
> + Elf64_Addr st_value; /* Symbol value. */
> + Elf64_Xword st_size; /* Size of associated object. */
> +} Elf64_Sym;
> +
> +/* Macros for accessing the fields of st_info. */
> +#define ELF64_ST_BIND(info) ((info) >> 4)
> +#define ELF64_ST_TYPE(info) ((info) & 0xf)
> +
> +/* Macro for constructing st_info from field values. */
> +#define ELF64_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
> +
> +/* Macro for accessing the fields of st_other. */
> +#define ELF64_ST_VISIBILITY(oth) ((oth) & 0x3)
> +
> +/* Structures used by Sun & GNU-style symbol versioning. */
> +typedef struct {
> + Elf64_Half vd_version;
> + Elf64_Half vd_flags;
> + Elf64_Half vd_ndx;
> + Elf64_Half vd_cnt;
> + Elf64_Word vd_hash;
> + Elf64_Word vd_aux;
> + Elf64_Word vd_next;
> +} Elf64_Verdef;
> +
> +typedef struct {
> + Elf64_Word vda_name;
> + Elf64_Word vda_next;
> +} Elf64_Verdaux;
> +
> +typedef struct {
> + Elf64_Half vn_version;
> + Elf64_Half vn_cnt;
> + Elf64_Word vn_file;
> + Elf64_Word vn_aux;
> + Elf64_Word vn_next;
> +} Elf64_Verneed;
> +
> +typedef struct {
> + Elf64_Word vna_hash;
> + Elf64_Half vna_flags;
> + Elf64_Half vna_other;
> + Elf64_Word vna_name;
> + Elf64_Word vna_next;
> +} Elf64_Vernaux;
> +
> +typedef Elf64_Half Elf64_Versym;
> +
> +typedef struct {
> + Elf64_Half si_boundto; /* direct bindings - symbol bound to */
> + Elf64_Half si_flags; /* per symbol flags */
> +} Elf64_Syminfo;
> +
> +#endif /* !_SYS_ELF64_H_ */
> diff --git a/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/Elf64Lib.c b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/Elf64Lib.c
> new file mode 100644
> index 0000000000..e364807007
> --- /dev/null
> +++ b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/Elf64Lib.c
> @@ -0,0 +1,460 @@
> +/** @file
> + ELF library
> +
> + Copyright (c) 2019 - 2021, Intel Corporation. All rights reserved.<BR>
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include "ElfLibInternal.h"
> +
> +/**
> + Return the section header specified by Index.
> +
> + @param ImageBase The image base.
> + @param Index The section index.
> +
> + @return Pointer to the section header.
> +**/
> +Elf64_Shdr *
> +GetElf64SectionByIndex (
> + IN UINT8 *ImageBase,
> + IN UINT32 Index
> + )
> +{
> + Elf64_Ehdr *Ehdr;
> +
> + Ehdr = (Elf64_Ehdr *)ImageBase;
> + if (Index >= Ehdr->e_shnum) {
> + return NULL;
> + }
> +
> + return (Elf64_Shdr *)(ImageBase + Ehdr->e_shoff + Index * Ehdr->e_shentsize);
> +}
> +
> +/**
> + Return the segment header specified by Index.
> +
> + @param ImageBase The image base.
> + @param Index The segment index.
> +
> + @return Pointer to the segment header.
> +**/
> +Elf64_Phdr *
> +GetElf64SegmentByIndex (
> + IN UINT8 *ImageBase,
> + IN UINT32 Index
> + )
> +{
> + Elf64_Ehdr *Ehdr;
> +
> + Ehdr = (Elf64_Ehdr *)ImageBase;
> + if (Index >= Ehdr->e_phnum) {
> + return NULL;
> + }
> +
> + return (Elf64_Phdr *)(ImageBase + Ehdr->e_phoff + Index * Ehdr->e_phentsize);
Alignment checks? Bounds checks?
> +}
> +
> +/**
> + Return the section header specified by the range.
> +
> + @param ImageBase The image base.
> + @param Offset The section offset.
> + @param Size The section size.
> +
> + @return Pointer to the section header.
> +**/
> +Elf64_Shdr *
> +GetElf64SectionByRange (
> + IN UINT8 *ImageBase,
> + IN UINT64 Offset,
> + IN UINT64 Size
> + )
> +{
> + UINT32 Index;
> + Elf64_Ehdr *Ehdr;
> + Elf64_Shdr *Shdr;
> +
> + Ehdr = (Elf64_Ehdr *)ImageBase;
> +
> + Shdr = (Elf64_Shdr *) (ImageBase + Ehdr->e_shoff);
> + for (Index = 0; Index < Ehdr->e_shnum; Index++) {
> + if ((Shdr->sh_offset == Offset) && (Shdr->sh_size == Size)) {
> + return Shdr;
> + }
> + Shdr = ELF_NEXT_ENTRY (Elf64_Shdr, Shdr, Ehdr->e_shentsize);
> + }
> + return NULL;
> +}
> +
> +/**
> + Fix up the image based on the relocation entries.
> +
> + @param Rela Relocation entries.
> + @param RelaSize Total size of relocation entries.
> + @param RelaEntrySize Relocation entry size.
> + @param RelaType Type of relocation entry.
> + @param Delta The delta between preferred image base and the actual image base.
> + @param DynamicLinking TRUE when fixing up according to dynamic relocation.
> +
> + @retval EFI_SUCCESS The image fix up is processed successfully.
> +**/
> +EFI_STATUS
> +ProcessRelocation64 (
> + IN Elf64_Rela *Rela,
> + IN UINT64 RelaSize,
> + IN UINT64 RelaEntrySize,
> + IN UINT64 RelaType,
> + IN INTN Delta,
> + IN BOOLEAN DynamicLinking
> + )
> +{
> + UINTN Index;
> + UINT64 *Ptr;
> + UINT32 Type;
> +
> + for ( Index = 0
> + ; MultU64x64 (RelaEntrySize, Index) < RelaSize
> + ; Index++, Rela = ELF_NEXT_ENTRY (Elf64_Rela, Rela, RelaEntrySize)
> + ) {
> + //
> + // r_offset is the virtual address of the storage unit affected by the relocation.
> + //
> + Ptr = (UINT64 *)(UINTN)(Rela->r_offset + Delta);
> + Type = ELF64_R_TYPE(Rela->r_info);
> + switch (Type) {
> + 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:
> + if (DynamicLinking) {
> + //
> + // Dynamic section doesn't contain entries of this type.
> + //
> + DEBUG ((DEBUG_INFO, "Unsupported relocation type %02X\n", Type));
> + ASSERT (FALSE);
> + } else {
> + *Ptr += Delta;
> + }
> + break;
> +
> + case R_X86_64_32:
> + //
> + // Dynamic section doesn't contain entries of this type.
> + //
> + DEBUG ((DEBUG_INFO, "Unsupported relocation type %02X\n", Type));
> + ASSERT (FALSE);
> + break;
> +
> + case R_X86_64_RELATIVE:
> + if (DynamicLinking) {
> + //
> + // A: Represents the addend used to compute the value of the relocatable field.
> + // B: Represents the base address at which a shared object has been loaded into memory during execution.
> + // Generally, a shared object is built with a 0 base virtual address, but the execution address will be different.
> + //
> + // B (Base Address) in ELF spec is slightly different:
> + // An executable or shared object file's base address (on platforms that support the concept) is calculated during
> + // execution from three values: the virtual memory load address, the maximum page size, and the lowest virtual address
> + // of a program's loadable segment. To compute the base address, one determines the memory address associated with the
> + // lowest p_vaddr value for a PT_LOAD segment. This address is truncated to the nearest multiple of the maximum page size.
> + // The corresponding p_vaddr value itself is also truncated to the nearest multiple of the maximum page size.
> + //
> + // *** The base address is the difference between the truncated memory address and the truncated p_vaddr value. ***
> + //
> + // Delta in this function is B.
> + //
> + // Calculation: B + A
> + //
> + if (RelaType == SHT_RELA) {
> + ASSERT (*Ptr == 0);
> + *Ptr = Delta + Rela->r_addend;
> + } else {
> + //
> + // A is stored in the field of relocation for REL type.
> + //
> + *Ptr = Delta + *Ptr;
> + }
> + } else {
> + //
> + // non-Dynamic section doesn't contain entries of this type.
> + //
> + DEBUG ((DEBUG_INFO, "Unsupported relocation type %02X\n", Type));
> + ASSERT (FALSE);
> + }
> + break;
> +
> + default:
> + DEBUG ((DEBUG_INFO, "Unsupported relocation type %02X\n", Type));
> + }
> + }
> + return EFI_SUCCESS;
> +}
> +
> +/**
> + Relocate the DYN type image.
> +
> + @param ElfCt Point to image context.
> +
> + @retval EFI_SUCCESS The relocation succeeds.
> + @retval EFI_UNSUPPORTED The image doesn't contain a dynamic section.
> +**/
> +EFI_STATUS
> +RelocateElf64Dynamic (
> + IN ELF_IMAGE_CONTEXT *ElfCt
> + )
> +{
> + UINT32 Index;
> + Elf64_Phdr *Phdr;
> + Elf64_Shdr *DynShdr;
> + Elf64_Shdr *RelShdr;
> + Elf64_Dyn *Dyn;
> + UINT64 RelaOffset;
> + UINT64 RelaCount;
> + UINT64 RelaSize;
> + UINT64 RelaEntrySize;
> + UINT64 RelaType;
> +
> + //
> + // 1. Locate the dynamic section.
> + //
> + // If an object file participates in dynamic linking, its program header table
> + // will have an element of type PT_DYNAMIC.
> + // This ``segment'' contains the .dynamic section. A special symbol, _DYNAMIC,
> + // labels the section, which contains an array of Elf32_Dyn or Elf64_Dyn.
> + //
> + DynShdr = NULL;
> + for (Index = 0; Index < ElfCt->PhNum; Index++) {
> + Phdr = GetElf64SegmentByIndex (ElfCt->FileBase, Index);
> + ASSERT (Phdr != NULL);
> + if (Phdr->p_type == PT_DYNAMIC) {
> + //
> + // Verify the existence of the dynamic section.
> + //
> + DynShdr = GetElf64SectionByRange (ElfCt->FileBase, Phdr->p_offset, Phdr->p_filesz);
> + break;
> + }
> + }
> +
> + //
> + // It's abnormal a DYN ELF doesn't contain a dynamic section.
> + //
> + ASSERT (DynShdr != NULL);
> + if (DynShdr == NULL) {
> + return EFI_UNSUPPORTED;
> + }
> + ASSERT (DynShdr->sh_type == SHT_DYNAMIC);
> + ASSERT (DynShdr->sh_entsize >= sizeof (*Dyn));
> +
> + //
> + // 2. Locate the relocation section from the dynamic section.
> + //
> + RelaOffset = MAX_UINT64;
> + RelaSize = 0;
> + RelaCount = 0;
> + RelaEntrySize = 0;
> + RelaType = 0;
> + for ( Index = 0, Dyn = (Elf64_Dyn *) (ElfCt->FileBase + DynShdr->sh_offset)
> + ; Index < DivU64x64Remainder (DynShdr->sh_size, DynShdr->sh_entsize, NULL)
> + ; Index++, Dyn = ELF_NEXT_ENTRY (Elf64_Dyn, Dyn, DynShdr->sh_entsize)
> + ) {
> + switch (Dyn->d_tag) {
> + case DT_RELA:
> + case DT_REL:
> + //
> + // DT_REL represent program virtual addresses.
> + // A file's virtual addresses might not match the memory virtual addresses during execution.
> + // When interpreting addresses contained in the dynamic structure, the dynamic linker computes actual addresses,
> + // based on the original file value and the memory base address.
> + // For consistency, files do not contain relocation entries to ``correct'' addresses in the dynamic structure.
> + //
> + RelaOffset = Dyn->d_un.d_ptr - (UINTN) ElfCt->PreferredImageAddress;
> + RelaType = (Dyn->d_tag == DT_RELA) ? SHT_RELA: SHT_REL;
> + break;
> + case DT_RELACOUNT:
> + case DT_RELCOUNT:
> + RelaCount = Dyn->d_un.d_val;
> + break;
> + case DT_RELENT:
> + case DT_RELAENT:
> + RelaEntrySize = Dyn->d_un.d_val;
> + break;
> + case DT_RELSZ:
> + case DT_RELASZ:
> + RelaSize = Dyn->d_un.d_val;
> + break;
> + default:
> + break;
> + }
> + }
> +
> + if (RelaOffset == MAX_UINT64) {
> + ASSERT (RelaCount == 0);
> + ASSERT (RelaEntrySize == 0);
> + ASSERT (RelaSize == 0);
> + //
> + // It's fine that a DYN ELF doesn't contain relocation section.
> + //
> + return EFI_SUCCESS;
> + }
> +
> + //
> + // Verify the existence of the relocation section.
> + //
> + RelShdr = GetElf64SectionByRange (ElfCt->FileBase, RelaOffset, RelaSize);
> + ASSERT (RelShdr != NULL);
> + if (RelShdr == NULL) {
> + return EFI_UNSUPPORTED;
> + }
> + ASSERT (RelShdr->sh_type == RelaType);
> + ASSERT (RelShdr->sh_entsize == RelaEntrySize);
> +
> + //
> + // 3. Process the relocation section.
> + //
> + ProcessRelocation64 (
> + (Elf64_Rela *) (ElfCt->FileBase + RelShdr->sh_offset),
Alignment? :) I know there is no real concept in EDK II yet, but it
really is needed.
> + RelShdr->sh_size, RelShdr->sh_entsize, RelShdr->sh_type,
> + (UINTN) ElfCt->ImageAddress - (UINTN) ElfCt->PreferredImageAddress,
> + TRUE
> + );
> + return EFI_SUCCESS;
> +}
> +
> +/**
> + Relocate all sections in a ELF image.
> +
> + @param[in] ElfCt ELF image context pointer.
> +
> + @retval EFI_UNSUPPORTED Relocation is not supported.
> + @retval EFI_SUCCESS ELF image was relocated successfully.
> +**/
> +EFI_STATUS
> +RelocateElf64Sections (
> + IN ELF_IMAGE_CONTEXT *ElfCt
> + )
> +{
> + EFI_STATUS Status;
> + Elf64_Ehdr *Ehdr;
> + Elf64_Shdr *RelShdr;
> + Elf64_Shdr *Shdr;
> + UINT32 Index;
> + UINTN Delta;
> +
> + Ehdr = (Elf64_Ehdr *)ElfCt->FileBase;
> + if (Ehdr->e_machine != EM_X86_64) {
> + return EFI_UNSUPPORTED;
> + }
> +
> + Delta = (UINTN) ElfCt->ImageAddress - (UINTN) ElfCt->PreferredImageAddress;
> + ElfCt->EntryPoint = (UINTN)(Ehdr->e_entry + Delta);
> +
> + //
> + // 1. Relocate dynamic ELF using the relocation section pointed by dynamic section
> + //
> + if (Ehdr->e_type == ET_DYN) {
> + DEBUG ((DEBUG_INFO, "DYN ELF: Relocate using dynamic sections...\n"));
> + Status = RelocateElf64Dynamic (ElfCt);
> + ASSERT_EFI_ERROR (Status);
> + return Status;
> + }
> +
> + //
> + // 2. Executable ELF: Fix up the delta between actual image address and preferred image address.
> + //
> + // Linker already fixed up EXEC ELF based on the preferred image address.
> + // A ELF loader in modern OS only loads it into the preferred image address.
> + // The below relocation is unneeded in that case.
> + // But the ELF loader in firmware supports to load the image to a different address.
> + // The below relocation is needed in this case.
> + //
> + DEBUG ((DEBUG_INFO, "EXEC ELF: Fix actual/preferred base address delta ...\n"));
> + for ( Index = 0, RelShdr = (Elf64_Shdr *) (ElfCt->FileBase + Ehdr->e_shoff)
> + ; Index < Ehdr->e_shnum
> + ; Index++, RelShdr = ELF_NEXT_ENTRY (Elf64_Shdr, RelShdr, Ehdr->e_shentsize)
> + ) {
> + if ((RelShdr->sh_type != SHT_REL) && (RelShdr->sh_type != SHT_RELA)) {
> + continue;
> + }
> + Shdr = GetElf64SectionByIndex (ElfCt->FileBase, RelShdr->sh_info);
> + if ((Shdr->sh_flags & SHF_ALLOC) == SHF_ALLOC) {
> + //
> + // Only fix up sections that occupy memory during process execution.
> + //
> + ProcessRelocation64 (
> + (Elf64_Rela *)((UINT8*)Ehdr + RelShdr->sh_offset),
> + RelShdr->sh_size, RelShdr->sh_entsize, RelShdr->sh_type,
> + Delta, FALSE
> + );
> + }
> + }
> +
> + return EFI_SUCCESS;
> +}
> +
> +/**
> + Load ELF image which has 64-bit architecture.
> +
> + Caller should set Context.ImageAddress to a proper value, either pointing to
> + a new allocated memory whose size equal to Context.ImageSize, or pointing
> + to Context.PreferredImageAddress.
> +
> + @param[in] ElfCt ELF image context pointer.
> +
> + @retval EFI_SUCCESS ELF binary is loaded successfully.
> + @retval Others Loading ELF binary fails.
> +
> +**/
> +EFI_STATUS
> +LoadElf64Image (
> + IN ELF_IMAGE_CONTEXT *ElfCt
> + )
> +{
> + Elf64_Ehdr *Ehdr;
> + Elf64_Phdr *Phdr;
> + UINT16 Index;
> + UINTN Delta;
> +
> + ASSERT (ElfCt != NULL);
> +
> + //
> + // Per the sprit of ELF, loading to memory only consumes info from program headers.
> + //
> + Ehdr = (Elf64_Ehdr *)ElfCt->FileBase;
> +
> + for ( Index = 0, Phdr = (Elf64_Phdr *)(ElfCt->FileBase + Ehdr->e_phoff)
> + ; Index < Ehdr->e_phnum
> + ; Index++, Phdr = ELF_NEXT_ENTRY (Elf64_Phdr, Phdr, Ehdr->e_phentsize)
> + ) {
> + //
> + // Skip segments that don't require load (type tells, or size is 0)
> + //
> + if ((Phdr->p_type != PT_LOAD) ||
> + (Phdr->p_memsz == 0)) {
> + continue;
> + }
> +
> + //
> + // The memory offset of segment relative to the image base
> + // Note: CopyMem() does nothing when the dst equals to src.
> + //
> + Delta = (UINTN) Phdr->p_paddr - (UINTN) ElfCt->PreferredImageAddress;
> + CopyMem (ElfCt->ImageAddress + Delta, ElfCt->FileBase + (UINTN) Phdr->p_offset, (UINTN) Phdr->p_filesz);
> + ZeroMem (ElfCt->ImageAddress + Delta + (UINTN) Phdr->p_filesz, (UINTN) (Phdr->p_memsz - Phdr->p_filesz));
> + }
> +
> + //
> + // Relocate when new new image base is not the preferred image base.
> + //
> + if (ElfCt->ImageAddress != ElfCt->PreferredImageAddress) {
> + RelocateElf64Sections (ElfCt);
> + }
> +
> + return EFI_SUCCESS;
> +}
> diff --git a/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfCommon.h b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfCommon.h
> new file mode 100644
> index 0000000000..15c9e33d3f
> --- /dev/null
> +++ b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfCommon.h
> @@ -0,0 +1,983 @@
> +/** @file
> +Ported ELF include files from FreeBSD
> +
> +Copyright (c) 2009 - 2010, Apple Inc. All rights reserved.<BR>
> +Portions Copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR>
> +SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +
> +**/
> +/*-
> + * Copyright (c) 1998 John D. Polstra.
> + * All rights reserved.
> + *
> + * Redistribution and use in source and binary forms, with or without
> + * modification, are permitted provided that the following conditions
> + * are met:
> + * 1. Redistributions of source code must retain the above copyright
> + * notice, this list of conditions and the following disclaimer.
> + * 2. Redistributions in binary form must reproduce the above copyright
> + * notice, this list of conditions and the following disclaimer in the
> + * documentation and/or other materials provided with the distribution.
> + *
> + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
> + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
> + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
> + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
> + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
> + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
> + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
> + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
> + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
> + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
> + * SUCH DAMAGE.
> + *
> + * $FreeBSD: src/sys/sys/elf_common.h,v 1.15.8.2 2007/12/03 21:30:36 marius Exp $
> + */
> +
> +#ifndef _SYS_ELF_COMMON_H_
> +#define _SYS_ELF_COMMON_H_ 1
> +
> +/*
> + * ELF definitions that are independent of architecture or word size.
> + */
> +
> +/*
> + * Note header. The ".note" section contains an array of notes. Each
> + * begins with this header, aligned to a word boundary. Immediately
> + * following the note header is n_namesz bytes of name, padded to the
> + * next word boundary. Then comes n_descsz bytes of descriptor, again
> + * padded to a word boundary. The values of n_namesz and n_descsz do
> + * not include the padding.
> + */
> +
> +typedef struct {
> + UINT32 n_namesz; /* Length of name. */
> + UINT32 n_descsz; /* Length of descriptor. */
> + UINT32 n_type; /* Type of this note. */
> +} Elf_Note;
> +
> +/* Indexes into the e_ident array. Keep synced with
> + http://www.sco.com/developers/gabi/latest/ch4.eheader.html */
> +#define EI_MAG0 0 /* Magic number, byte 0. */
> +#define EI_MAG1 1 /* Magic number, byte 1. */
> +#define EI_MAG2 2 /* Magic number, byte 2. */
> +#define EI_MAG3 3 /* Magic number, byte 3. */
> +#define EI_CLASS 4 /* Class of machine. */
> +#define EI_DATA 5 /* Data format. */
> +#define EI_VERSION 6 /* ELF format version. */
> +#define EI_OSABI 7 /* Operating system / ABI identification */
> +#define EI_ABIVERSION 8 /* ABI version */
> +#define OLD_EI_BRAND 8 /* Start of architecture identification. */
> +#define EI_PAD 9 /* Start of padding (per SVR4 ABI). */
> +#define EI_NIDENT 16 /* Size of e_ident array. */
> +
> +/* Values for the magic number bytes. */
> +#define ELFMAG0 0x7f
> +#define ELFMAG1 'E'
> +#define ELFMAG2 'L'
> +#define ELFMAG3 'F'
> +#define ELFMAG "\177ELF" /* magic string */
> +#define SELFMAG 4 /* magic string size */
> +
> +/* Values for e_ident[EI_VERSION] and e_version. */
> +#define EV_NONE 0
> +#define EV_CURRENT 1
> +
> +/* Values for e_ident[EI_CLASS]. */
> +#define ELFCLASSNONE 0 /* Unknown class. */
> +#define ELFCLASS32 1 /* 32-bit architecture. */
> +#define ELFCLASS64 2 /* 64-bit architecture. */
> +
> +/* Values for e_ident[EI_DATA]. */
> +#define ELFDATANONE 0 /* Unknown data format. */
> +#define ELFDATA2LSB 1 /* 2's complement little-endian. */
> +#define ELFDATA2MSB 2 /* 2's complement big-endian. */
> +
> +/* Values for e_ident[EI_OSABI]. */
> +#define ELFOSABI_NONE 0 /* UNIX System V ABI */
> +#define ELFOSABI_HPUX 1 /* HP-UX operating system */
> +#define ELFOSABI_NETBSD 2 /* NetBSD */
> +#define ELFOSABI_LINUX 3 /* GNU/Linux */
> +#define ELFOSABI_HURD 4 /* GNU/Hurd */
> +#define ELFOSABI_86OPEN 5 /* 86Open common IA32 ABI */
> +#define ELFOSABI_SOLARIS 6 /* Solaris */
> +#define ELFOSABI_AIX 7 /* AIX */
> +#define ELFOSABI_IRIX 8 /* IRIX */
> +#define ELFOSABI_FREEBSD 9 /* FreeBSD */
> +#define ELFOSABI_TRU64 10 /* TRU64 UNIX */
> +#define ELFOSABI_MODESTO 11 /* Novell Modesto */
> +#define ELFOSABI_OPENBSD 12 /* OpenBSD */
> +#define ELFOSABI_OPENVMS 13 /* Open VMS */
> +#define ELFOSABI_NSK 14 /* HP Non-Stop Kernel */
> +#define ELFOSABI_ARM 97 /* ARM */
> +#define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */
> +
> +#define ELFOSABI_SYSV ELFOSABI_NONE /* symbol used in old spec */
> +#define ELFOSABI_MONTEREY ELFOSABI_AIX /* Monterey */
> +
> +/* e_ident */
> +#define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \
> + (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \
> + (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \
> + (ehdr).e_ident[EI_MAG3] == ELFMAG3)
> +
> +/* Values for e_type. */
> +#define ET_NONE 0 /* Unknown type. */
> +#define ET_REL 1 /* Relocatable. */
> +#define ET_EXEC 2 /* Executable. */
> +#define ET_DYN 3 /* Shared object. */
> +#define ET_CORE 4 /* Core file. */
> +#define ET_LOOS 0xfe00 /* First operating system specific. */
> +#define ET_HIOS 0xfeff /* Last operating system-specific. */
> +#define ET_LOPROC 0xff00 /* First processor-specific. */
> +#define ET_HIPROC 0xffff /* Last processor-specific. */
> +
> +/* Values for e_machine. */
> +#define EM_NONE 0 /* Unknown machine. */
> +#define EM_M32 1 /* AT&T WE32100. */
> +#define EM_SPARC 2 /* Sun SPARC. */
> +#define EM_386 3 /* Intel i386. */
> +#define EM_68K 4 /* Motorola 68000. */
> +#define EM_88K 5 /* Motorola 88000. */
> +#define EM_860 7 /* Intel i860. */
> +#define EM_MIPS 8 /* MIPS R3000 Big-Endian only. */
> +#define EM_S370 9 /* IBM System/370. */
> +#define EM_MIPS_RS3_LE 10 /* MIPS R3000 Little-Endian. */
> +#define EM_PARISC 15 /* HP PA-RISC. */
> +#define EM_VPP500 17 /* Fujitsu VPP500. */
> +#define EM_SPARC32PLUS 18 /* SPARC v8plus. */
> +#define EM_960 19 /* Intel 80960. */
> +#define EM_PPC 20 /* PowerPC 32-bit. */
> +#define EM_PPC64 21 /* PowerPC 64-bit. */
> +#define EM_S390 22 /* IBM System/390. */
> +#define EM_V800 36 /* NEC V800. */
> +#define EM_FR20 37 /* Fujitsu FR20. */
> +#define EM_RH32 38 /* TRW RH-32. */
> +#define EM_RCE 39 /* Motorola RCE. */
> +#define EM_ARM 40 /* ARM. */
> +#define EM_SH 42 /* Hitachi SH. */
> +#define EM_SPARCV9 43 /* SPARC v9 64-bit. */
> +#define EM_TRICORE 44 /* Siemens TriCore embedded processor. */
> +#define EM_ARC 45 /* Argonaut RISC Core. */
> +#define EM_H8_300 46 /* Hitachi H8/300. */
> +#define EM_H8_300H 47 /* Hitachi H8/300H. */
> +#define EM_H8S 48 /* Hitachi H8S. */
> +#define EM_H8_500 49 /* Hitachi H8/500. */
> +#define EM_MIPS_X 51 /* Stanford MIPS-X. */
> +#define EM_COLDFIRE 52 /* Motorola ColdFire. */
> +#define EM_68HC12 53 /* Motorola M68HC12. */
> +#define EM_MMA 54 /* Fujitsu MMA. */
> +#define EM_PCP 55 /* Siemens PCP. */
> +#define EM_NCPU 56 /* Sony nCPU. */
> +#define EM_NDR1 57 /* Denso NDR1 microprocessor. */
> +#define EM_STARCORE 58 /* Motorola Star*Core processor. */
> +#define EM_ME16 59 /* Toyota ME16 processor. */
> +#define EM_ST100 60 /* STMicroelectronics ST100 processor. */
> +#define EM_TINYJ 61 /* Advanced Logic Corp. TinyJ processor. */
> +#define EM_X86_64 62 /* Advanced Micro Devices x86-64 */
> +#define EM_AMD64 EM_X86_64 /* Advanced Micro Devices x86-64 (compat) */
> +#define EM_AARCH64 183 /* ARM 64bit Architecture */
> +
> +/* Non-standard or deprecated. */
> +#define EM_486 6 /* Intel i486. */
> +#define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */
> +#define EM_ALPHA_STD 41 /* Digital Alpha (standard value). */
> +#define EM_ALPHA 0x9026 /* Alpha (written in the absence of an ABI) */
> +
> +/* Special section indexes. */
> +#define SHN_UNDEF 0 /* Undefined, missing, irrelevant. */
> +#define SHN_LORESERVE 0xff00 /* First of reserved range. */
> +#define SHN_LOPROC 0xff00 /* First processor-specific. */
> +#define SHN_HIPROC 0xff1f /* Last processor-specific. */
> +#define SHN_LOOS 0xff20 /* First operating system-specific. */
> +#define SHN_HIOS 0xff3f /* Last operating system-specific. */
> +#define SHN_ABS 0xfff1 /* Absolute values. */
> +#define SHN_COMMON 0xfff2 /* Common data. */
> +#define SHN_XINDEX 0xffff /* Escape -- index stored elsewhere. */
> +#define SHN_HIRESERVE 0xffff /* Last of reserved range. */
> +
> +/* sh_type */
> +#define SHT_NULL 0 /* inactive */
> +#define SHT_PROGBITS 1 /* program defined information */
> +#define SHT_SYMTAB 2 /* symbol table section */
> +#define SHT_STRTAB 3 /* string table section */
> +#define SHT_RELA 4 /* relocation section with addends */
> +#define SHT_HASH 5 /* symbol hash table section */
> +#define SHT_DYNAMIC 6 /* dynamic section */
> +#define SHT_NOTE 7 /* note section */
> +#define SHT_NOBITS 8 /* no space section */
> +#define SHT_REL 9 /* relocation section - no addends */
> +#define SHT_SHLIB 10 /* reserved - purpose unknown */
> +#define SHT_DYNSYM 11 /* dynamic symbol table section */
> +#define SHT_INIT_ARRAY 14 /* Initialization function pointers. */
> +#define SHT_FINI_ARRAY 15 /* Termination function pointers. */
> +#define SHT_PREINIT_ARRAY 16 /* Pre-initialization function ptrs. */
> +#define SHT_GROUP 17 /* Section group. */
> +#define SHT_SYMTAB_SHNDX 18 /* Section indexes (see SHN_XINDEX). */
> +#define SHT_LOOS 0x60000000 /* First of OS specific semantics */
> +#define SHT_LOSUNW 0x6ffffff4
> +#define SHT_SUNW_dof 0x6ffffff4
> +#define SHT_SUNW_cap 0x6ffffff5
> +#define SHT_SUNW_SIGNATURE 0x6ffffff6
> +#define SHT_SUNW_ANNOTATE 0x6ffffff7
> +#define SHT_SUNW_DEBUGSTR 0x6ffffff8
> +#define SHT_SUNW_DEBUG 0x6ffffff9
> +#define SHT_SUNW_move 0x6ffffffa
> +#define SHT_SUNW_COMDAT 0x6ffffffb
> +#define SHT_SUNW_syminfo 0x6ffffffc
> +#define SHT_SUNW_verdef 0x6ffffffd
> +#define SHT_GNU_verdef 0x6ffffffd /* Symbol versions provided */
> +#define SHT_SUNW_verneed 0x6ffffffe
> +#define SHT_GNU_verneed 0x6ffffffe /* Symbol versions required */
> +#define SHT_SUNW_versym 0x6fffffff
> +#define SHT_GNU_versym 0x6fffffff /* Symbol version table */
> +#define SHT_HISUNW 0x6fffffff
> +#define SHT_HIOS 0x6fffffff /* Last of OS specific semantics */
> +#define SHT_LOPROC 0x70000000 /* reserved range for processor */
> +#define SHT_AMD64_UNWIND 0x70000001 /* unwind information */
> +#define SHT_HIPROC 0x7fffffff /* specific section header types */
> +#define SHT_LOUSER 0x80000000 /* reserved range for application */
> +#define SHT_HIUSER 0xffffffff /* specific indexes */
> +
> +/* Flags for sh_flags. */
> +#define SHF_WRITE 0x1 /* Section contains writable data. */
> +#define SHF_ALLOC 0x2 /* Section occupies memory. */
> +#define SHF_EXECINSTR 0x4 /* Section contains instructions. */
> +#define SHF_MERGE 0x10 /* Section may be merged. */
> +#define SHF_STRINGS 0x20 /* Section contains strings. */
> +#define SHF_INFO_LINK 0x40 /* sh_info holds section index. */
> +#define SHF_LINK_ORDER 0x80 /* Special ordering requirements. */
> +#define SHF_OS_NONCONFORMING 0x100 /* OS-specific processing required. */
> +#define SHF_GROUP 0x200 /* Member of section group. */
> +#define SHF_TLS 0x400 /* Section contains TLS data. */
> +#define SHF_MASKOS 0x0ff00000 /* OS-specific semantics. */
> +#define SHF_MASKPROC 0xf0000000 /* Processor-specific semantics. */
> +
> +/* Values for p_type. */
> +#define PT_NULL 0 /* Unused entry. */
> +#define PT_LOAD 1 /* Loadable segment. */
> +#define PT_DYNAMIC 2 /* Dynamic linking information segment. */
> +#define PT_INTERP 3 /* Pathname of interpreter. */
> +#define PT_NOTE 4 /* Auxiliary information. */
> +#define PT_SHLIB 5 /* Reserved (not used). */
> +#define PT_PHDR 6 /* Location of program header itself. */
> +#define PT_TLS 7 /* Thread local storage segment */
> +#define PT_LOOS 0x60000000 /* First OS-specific. */
> +#define PT_SUNW_UNWIND 0x6464e550 /* amd64 UNWIND program header */
> +#define PT_GNU_EH_FRAME 0x6474e550
> +#define PT_LOSUNW 0x6ffffffa
> +#define PT_SUNWBSS 0x6ffffffa /* Sun Specific segment */
> +#define PT_SUNWSTACK 0x6ffffffb /* describes the stack segment */
> +#define PT_SUNWDTRACE 0x6ffffffc /* private */
> +#define PT_SUNWCAP 0x6ffffffd /* hard/soft capabilities segment */
> +#define PT_HISUNW 0x6fffffff
> +#define PT_HIOS 0x6fffffff /* Last OS-specific. */
> +#define PT_LOPROC 0x70000000 /* First processor-specific type. */
> +#define PT_HIPROC 0x7fffffff /* Last processor-specific type. */
> +
> +/* Values for p_flags. */
> +#define PF_X 0x1 /* Executable. */
> +#define PF_W 0x2 /* Writable. */
> +#define PF_R 0x4 /* Readable. */
> +#define PF_MASKOS 0x0ff00000 /* Operating system-specific. */
> +#define PF_MASKPROC 0xf0000000 /* Processor-specific. */
> +
> +/* Extended program header index. */
> +#define PN_XNUM 0xffff
> +
> +/* Values for d_tag. */
> +#define DT_NULL 0 /* Terminating entry. */
> +#define DT_NEEDED 1 /* String table offset of a needed shared
> + library. */
> +#define DT_PLTRELSZ 2 /* Total size in bytes of PLT relocations. */
> +#define DT_PLTGOT 3 /* Processor-dependent address. */
> +#define DT_HASH 4 /* Address of symbol hash table. */
> +#define DT_STRTAB 5 /* Address of string table. */
> +#define DT_SYMTAB 6 /* Address of symbol table. */
> +#define DT_RELA 7 /* Address of ElfNN_Rela relocations. */
> +#define DT_RELASZ 8 /* Total size of ElfNN_Rela relocations. */
> +#define DT_RELAENT 9 /* Size of each ElfNN_Rela relocation entry. */
> +#define DT_STRSZ 10 /* Size of string table. */
> +#define DT_SYMENT 11 /* Size of each symbol table entry. */
> +#define DT_INIT 12 /* Address of initialization function. */
> +#define DT_FINI 13 /* Address of finalization function. */
> +#define DT_SONAME 14 /* String table offset of shared object
> + name. */
> +#define DT_RPATH 15 /* String table offset of library path. [sup] */
> +#define DT_SYMBOLIC 16 /* Indicates "symbolic" linking. [sup] */
> +#define DT_REL 17 /* Address of ElfNN_Rel relocations. */
> +#define DT_RELSZ 18 /* Total size of ElfNN_Rel relocations. */
> +#define DT_RELENT 19 /* Size of each ElfNN_Rel relocation. */
> +#define DT_PLTREL 20 /* Type of relocation used for PLT. */
> +#define DT_DEBUG 21 /* Reserved (not used). */
> +#define DT_TEXTREL 22 /* Indicates there may be relocations in
> + non-writable segments. [sup] */
> +#define DT_JMPREL 23 /* Address of PLT relocations. */
> +#define DT_BIND_NOW 24 /* [sup] */
> +#define DT_INIT_ARRAY 25 /* Address of the array of pointers to
> + initialization functions */
> +#define DT_FINI_ARRAY 26 /* Address of the array of pointers to
> + termination functions */
> +#define DT_INIT_ARRAYSZ 27 /* Size in bytes of the array of
> + initialization functions. */
> +#define DT_FINI_ARRAYSZ 28 /* Size in bytes of the array of
> + terminationfunctions. */
> +#define DT_RUNPATH 29 /* String table offset of a null-terminated
> + library search path string. */
> +#define DT_FLAGS 30 /* Object specific flag values. */
> +#define DT_ENCODING 32 /* Values greater than or equal to DT_ENCODING
> + and less than DT_LOOS follow the rules for
> + the interpretation of the d_un union
> + as follows: even == 'd_ptr', even == 'd_val'
> + or none */
> +#define DT_PREINIT_ARRAY 32 /* Address of the array of pointers to
> + pre-initialization functions. */
> +#define DT_PREINIT_ARRAYSZ 33 /* Size in bytes of the array of
> + pre-initialization functions. */
> +#define DT_MAXPOSTAGS 34 /* number of positive tags */
> +#define DT_LOOS 0x6000000d /* First OS-specific */
> +#define DT_SUNW_AUXILIARY 0x6000000d /* symbol auxiliary name */
> +#define DT_SUNW_RTLDINF 0x6000000e /* ld.so.1 info (private) */
> +#define DT_SUNW_FILTER 0x6000000f /* symbol filter name */
> +#define DT_SUNW_CAP 0x60000010 /* hardware/software */
> +#define DT_HIOS 0x6ffff000 /* Last OS-specific */
> +
> +/*
> + * DT_* entries which fall between DT_VALRNGHI & DT_VALRNGLO use the
> + * Dyn.d_un.d_val field of the Elf*_Dyn structure.
> + */
> +#define DT_VALRNGLO 0x6ffffd00
> +#define DT_CHECKSUM 0x6ffffdf8 /* elf checksum */
> +#define DT_PLTPADSZ 0x6ffffdf9 /* pltpadding size */
> +#define DT_MOVEENT 0x6ffffdfa /* move table entry size */
> +#define DT_MOVESZ 0x6ffffdfb /* move table size */
> +#define DT_FEATURE_1 0x6ffffdfc /* feature holder */
> +#define DT_POSFLAG_1 0x6ffffdfd /* flags for DT_* entries, effecting */
> + /* the following DT_* entry. */
> + /* See DF_P1_* definitions */
> +#define DT_SYMINSZ 0x6ffffdfe /* syminfo table size (in bytes) */
> +#define DT_SYMINENT 0x6ffffdff /* syminfo entry size (in bytes) */
> +#define DT_VALRNGHI 0x6ffffdff
> +
> +/*
> + * DT_* entries which fall between DT_ADDRRNGHI & DT_ADDRRNGLO use the
> + * Dyn.d_un.d_ptr field of the Elf*_Dyn structure.
> + *
> + * If any adjustment is made to the ELF object after it has been
> + * built, these entries will need to be adjusted.
> + */
> +#define DT_ADDRRNGLO 0x6ffffe00
> +#define DT_CONFIG 0x6ffffefa /* configuration information */
> +#define DT_DEPAUDIT 0x6ffffefb /* dependency auditing */
> +#define DT_AUDIT 0x6ffffefc /* object auditing */
> +#define DT_PLTPAD 0x6ffffefd /* pltpadding (sparcv9) */
> +#define DT_MOVETAB 0x6ffffefe /* move table */
> +#define DT_SYMINFO 0x6ffffeff /* syminfo table */
> +#define DT_ADDRRNGHI 0x6ffffeff
> +
> +#define DT_VERSYM 0x6ffffff0 /* Address of versym section. */
> +#define DT_RELACOUNT 0x6ffffff9 /* number of RELATIVE relocations */
> +#define DT_RELCOUNT 0x6ffffffa /* number of RELATIVE relocations */
> +#define DT_FLAGS_1 0x6ffffffb /* state flags - see DF_1_* defs */
> +#define DT_VERDEF 0x6ffffffc /* Address of verdef section. */
> +#define DT_VERDEFNUM 0x6ffffffd /* Number of elems in verdef section */
> +#define DT_VERNEED 0x6ffffffe /* Address of verneed section. */
> +#define DT_VERNEEDNUM 0x6fffffff /* Number of elems in verneed section */
> +
> +#define DT_LOPROC 0x70000000 /* First processor-specific type. */
> +#define DT_DEPRECATED_SPARC_REGISTER 0x7000001
> +#define DT_AUXILIARY 0x7ffffffd /* shared library auxiliary name */
> +#define DT_USED 0x7ffffffe /* ignored - same as needed */
> +#define DT_FILTER 0x7fffffff /* shared library filter name */
> +#define DT_HIPROC 0x7fffffff /* Last processor-specific type. */
> +
> +/* Values for DT_FLAGS */
> +#define DF_ORIGIN 0x0001 /* Indicates that the object being loaded may
> + make reference to the $ORIGIN substitution
> + string */
> +#define DF_SYMBOLIC 0x0002 /* Indicates "symbolic" linking. */
> +#define DF_TEXTREL 0x0004 /* Indicates there may be relocations in
> + non-writable segments. */
> +#define DF_BIND_NOW 0x0008 /* Indicates that the dynamic linker should
> + process all relocations for the object
> + containing this entry before transferring
> + control to the program. */
> +#define DF_STATIC_TLS 0x0010 /* Indicates that the shared object or
> + executable contains code using a static
> + thread-local storage scheme. */
> +
> +/* Values for n_type. Used in core files. */
> +#define NT_PRSTATUS 1 /* Process status. */
> +#define NT_FPREGSET 2 /* Floating point registers. */
> +#define NT_PRPSINFO 3 /* Process state info. */
> +
> +/* Symbol Binding - ELFNN_ST_BIND - st_info */
> +#define STB_LOCAL 0 /* Local symbol */
> +#define STB_GLOBAL 1 /* Global symbol */
> +#define STB_WEAK 2 /* like global - lower precedence */
> +#define STB_LOOS 10 /* Reserved range for operating system */
> +#define STB_HIOS 12 /* specific semantics. */
> +#define STB_LOPROC 13 /* reserved range for processor */
> +#define STB_HIPROC 15 /* specific semantics. */
> +
> +/* Symbol type - ELFNN_ST_TYPE - st_info */
> +#define STT_NOTYPE 0 /* Unspecified type. */
> +#define STT_OBJECT 1 /* Data object. */
> +#define STT_FUNC 2 /* Function. */
> +#define STT_SECTION 3 /* Section. */
> +#define STT_FILE 4 /* Source file. */
> +#define STT_COMMON 5 /* Uninitialized common block. */
> +#define STT_TLS 6 /* TLS object. */
> +#define STT_NUM 7
> +#define STT_LOOS 10 /* Reserved range for operating system */
> +#define STT_HIOS 12 /* specific semantics. */
> +#define STT_LOPROC 13 /* reserved range for processor */
> +#define STT_HIPROC 15 /* specific semantics. */
> +
> +/* Symbol visibility - ELFNN_ST_VISIBILITY - st_other */
> +#define STV_DEFAULT 0x0 /* Default visibility (see binding). */
> +#define STV_INTERNAL 0x1 /* Special meaning in relocatable objects. */
> +#define STV_HIDDEN 0x2 /* Not visible. */
> +#define STV_PROTECTED 0x3 /* Visible but not preemptible. */
> +
> +/* Special symbol table indexes. */
> +#define STN_UNDEF 0 /* Undefined symbol index. */
> +
> +/* Symbol versioning flags. */
> +#define VER_DEF_CURRENT 1
> +#define VER_DEF_IDX(x) VER_NDX(x)
> +
> +#define VER_FLG_BASE 0x01
> +#define VER_FLG_WEAK 0x02
> +
> +#define VER_NEED_CURRENT 1
> +#define VER_NEED_WEAK (1u << 15)
> +#define VER_NEED_HIDDEN VER_NDX_HIDDEN
> +#define VER_NEED_IDX(x) VER_NDX(x)
> +
> +#define VER_NDX_LOCAL 0
> +#define VER_NDX_GLOBAL 1
> +#define VER_NDX_GIVEN 2
> +
> +#define VER_NDX_HIDDEN (1u << 15)
> +#define VER_NDX(x) ((x) & ~(1u << 15))
> +
> +#define CA_SUNW_NULL 0
> +#define CA_SUNW_HW_1 1 /* first hardware capabilities entry */
> +#define CA_SUNW_SF_1 2 /* first software capabilities entry */
> +
> +/*
> + * Syminfo flag values
> + */
> +#define SYMINFO_FLG_DIRECT 0x0001 /* symbol ref has direct association */
> + /* to object containing defn. */
> +#define SYMINFO_FLG_PASSTHRU 0x0002 /* ignored - see SYMINFO_FLG_FILTER */
> +#define SYMINFO_FLG_COPY 0x0004 /* symbol is a copy-reloc */
> +#define SYMINFO_FLG_LAZYLOAD 0x0008 /* object containing defn should be */
> + /* lazily-loaded */
> +#define SYMINFO_FLG_DIRECTBIND 0x0010 /* ref should be bound directly to */
> + /* object containing defn. */
> +#define SYMINFO_FLG_NOEXTDIRECT 0x0020 /* don't let an external reference */
> + /* directly bind to this symbol */
> +#define SYMINFO_FLG_FILTER 0x0002 /* symbol ref is associated to a */
> +#define SYMINFO_FLG_AUXILIARY 0x0040 /* standard or auxiliary filter */
> +
> +/*
> + * Syminfo.si_boundto values.
> + */
> +#define SYMINFO_BT_SELF 0xffff /* symbol bound to self */
> +#define SYMINFO_BT_PARENT 0xfffe /* symbol bound to parent */
> +#define SYMINFO_BT_NONE 0xfffd /* no special symbol binding */
> +#define SYMINFO_BT_EXTERN 0xfffc /* symbol defined as external */
> +#define SYMINFO_BT_LOWRESERVE 0xff00 /* beginning of reserved entries */
> +
> +/*
> + * Syminfo version values.
> + */
> +#define SYMINFO_NONE 0 /* Syminfo version */
> +#define SYMINFO_CURRENT 1
> +#define SYMINFO_NUM 2
> +
> +/*
> + * Relocation types.
> + *
> + * All machine architectures are defined here to allow tools on one to
> + * handle others.
> + */
> +
> +#define R_386_NONE 0 /* No relocation. */
> +#define R_386_32 1 /* Add symbol value. */
> +#define R_386_PC32 2 /* Add PC-relative symbol value. */
> +#define R_386_GOT32 3 /* Add PC-relative GOT offset. */
> +#define R_386_PLT32 4 /* Add PC-relative PLT offset. */
> +#define R_386_COPY 5 /* Copy data from shared object. */
> +#define R_386_GLOB_DAT 6 /* Set GOT entry to data address. */
> +#define R_386_JMP_SLOT 7 /* Set GOT entry to code address. */
> +#define R_386_RELATIVE 8 /* Add load address of shared object. */
> +#define R_386_GOTOFF 9 /* Add GOT-relative symbol address. */
> +#define R_386_GOTPC 10 /* Add PC-relative GOT table address. */
> +#define R_386_TLS_TPOFF 14 /* Negative offset in static TLS block */
> +#define R_386_TLS_IE 15 /* Absolute address of GOT for -ve static TLS */
> +#define R_386_TLS_GOTIE 16 /* GOT entry for negative static TLS block */
> +#define R_386_TLS_LE 17 /* Negative offset relative to static TLS */
> +#define R_386_TLS_GD 18 /* 32 bit offset to GOT (index,off) pair */
> +#define R_386_TLS_LDM 19 /* 32 bit offset to GOT (index,zero) pair */
> +#define R_386_TLS_GD_32 24 /* 32 bit offset to GOT (index,off) pair */
> +#define R_386_TLS_GD_PUSH 25 /* pushl instruction for Sun ABI GD sequence */
> +#define R_386_TLS_GD_CALL 26 /* call instruction for Sun ABI GD sequence */
> +#define R_386_TLS_GD_POP 27 /* popl instruction for Sun ABI GD sequence */
> +#define R_386_TLS_LDM_32 28 /* 32 bit offset to GOT (index,zero) pair */
> +#define R_386_TLS_LDM_PUSH 29 /* pushl instruction for Sun ABI LD sequence */
> +#define R_386_TLS_LDM_CALL 30 /* call instruction for Sun ABI LD sequence */
> +#define R_386_TLS_LDM_POP 31 /* popl instruction for Sun ABI LD sequence */
> +#define R_386_TLS_LDO_32 32 /* 32 bit offset from start of TLS block */
> +#define R_386_TLS_IE_32 33 /* 32 bit offset to GOT static TLS offset entry */
> +#define R_386_TLS_LE_32 34 /* 32 bit offset within static TLS block */
> +#define R_386_TLS_DTPMOD32 35 /* GOT entry containing TLS index */
> +#define R_386_TLS_DTPOFF32 36 /* GOT entry containing TLS offset */
> +#define R_386_TLS_TPOFF32 37 /* GOT entry of -ve static TLS offset */
> +
> +/* Null relocation */
> +#define R_AARCH64_NONE 256 /* No relocation */
> +/* Static AArch64 relocations */
> + /* Static data relocations */
> +#define R_AARCH64_ABS64 257 /* S + A */
> +#define R_AARCH64_ABS32 258 /* S + A */
> +#define R_AARCH64_ABS16 259 /* S + A */
> +#define R_AARCH64_PREL64 260 /* S + A - P */
> +#define R_AARCH64_PREL32 261 /* S + A - P */
> +#define R_AARCH64_PREL16 262 /* S + A - P */
> + /* Group relocations to create a 16, 32, 48, or 64 bit unsigned data value or address inline */
> +#define R_AARCH64_MOVW_UABS_G0 263 /* S + A */
> +#define R_AARCH64_MOVW_UABS_G0_NC 264 /* S + A */
> +#define R_AARCH64_MOVW_UABS_G1 265 /* S + A */
> +#define R_AARCH64_MOVW_UABS_G1_NC 266 /* S + A */
> +#define R_AARCH64_MOVW_UABS_G2 267 /* S + A */
> +#define R_AARCH64_MOVW_UABS_G2_NC 268 /* S + A */
> +#define R_AARCH64_MOVW_UABS_G3 269 /* S + A */
> + /* Group relocations to create a 16, 32, 48, or 64 bit signed data or offset value inline */
> +#define R_AARCH64_MOVW_SABS_G0 270 /* S + A */
> +#define R_AARCH64_MOVW_SABS_G1 271 /* S + A */
> +#define R_AARCH64_MOVW_SABS_G2 272 /* S + A */
> + /* Relocations to generate 19, 21 and 33 bit PC-relative addresses */
> +#define R_AARCH64_LD_PREL_LO19 273 /* S + A - P */
> +#define R_AARCH64_ADR_PREL_LO21 274 /* S + A - P */
> +#define R_AARCH64_ADR_PREL_PG_HI21 275 /* Page(S+A) - Page(P) */
> +#define R_AARCH64_ADR_PREL_PG_HI21_NC 276 /* Page(S+A) - Page(P) */
> +#define R_AARCH64_ADD_ABS_LO12_NC 277 /* S + A */
> +#define R_AARCH64_LDST8_ABS_LO12_NC 278 /* S + A */
> +#define R_AARCH64_LDST16_ABS_LO12_NC 284 /* S + A */
> +#define R_AARCH64_LDST32_ABS_LO12_NC 285 /* S + A */
> +#define R_AARCH64_LDST64_ABS_LO12_NC 286 /* S + A */
> +#define R_AARCH64_LDST128_ABS_LO12_NC 299 /* S + A */
> + /* Relocations for control-flow instructions - all offsets are a multiple of 4 */
> +#define R_AARCH64_TSTBR14 279 /* S+A-P */
> +#define R_AARCH64_CONDBR19 280 /* S+A-P */
> +#define R_AARCH64_JUMP26 282 /* S+A-P */
> +#define R_AARCH64_CALL26 283 /* S+A-P */
> + /* Group relocations to create a 16, 32, 48, or 64 bit PC-relative offset inline */
> +#define R_AARCH64_MOVW_PREL_G0 287 /* S+A-P */
> +#define R_AARCH64_MOVW_PREL_G0_NC 288 /* S+A-P */
> +#define R_AARCH64_MOVW_PREL_G1 289 /* S+A-P */
> +#define R_AARCH64_MOVW_PREL_G1_NC 290 /* S+A-P */
> +#define R_AARCH64_MOVW_PREL_G2 291 /* S+A-P */
> +#define R_AARCH64_MOVW_PREL_G2_NC 292 /* S+A-P */
> +#define R_AARCH64_MOVW_PREL_G3 293 /* S+A-P */
> + /* Group relocations to create a 16, 32, 48, or 64 bit GOT-relative offsets inline */
> +#define R_AARCH64_MOVW_GOTOFF_G0 300 /* G(S)-GOT */
> +#define R_AARCH64_MOVW_GOTOFF_G0_NC 301 /* G(S)-GOT */
> +#define R_AARCH64_MOVW_GOTOFF_G1 302 /* G(S)-GOT */
> +#define R_AARCH64_MOVW_GOTOFF_G1_NC 303 /* G(S)-GOT */
> +#define R_AARCH64_MOVW_GOTOFF_G2 304 /* G(S)-GOT */
> +#define R_AARCH64_MOVW_GOTOFF_G2_NC 305 /* G(S)-GOT */
> +#define R_AARCH64_MOVW_GOTOFF_G3 306 /* G(S)-GOT */
> + /* GOT-relative data relocations */
> +#define R_AARCH64_GOTREL64 307 /* S+A-GOT */
> +#define R_AARCH64_GOTREL32 308 /* S+A-GOT */
> + /* GOT-relative instruction relocations */
> +#define R_AARCH64_GOT_LD_PREL19 309 /* G(S)-P */
> +#define R_AARCH64_LD64_GOTOFF_LO15 310 /* G(S)-GOT */
> +#define R_AARCH64_ADR_GOT_PAGE 311 /* Page(G(S))-Page(P) */
> +#define R_AARCH64_LD64_GOT_LO12_NC 312 /* G(S) */
> +#define R_AARCH64_LD64_GOTPAGE_LO15 313 /* G(S)-Page(GOT) */
> +/* Relocations for thread-local storage */
> + /* General Dynamic TLS relocations */
> +#define R_AARCH64_TLSGD_ADR_PREL21 512 /* G(TLSIDX(S+A)) - P */
> +#define R_AARCH64_TLSGD_ADR_PAGE21 513 /* Page(G(TLSIDX(S+A))) - Page(P) */
> +#define R_AARCH64_TLSGD_ADD_LO12_NC 514 /* G(TLSIDX(S+A)) */
> +#define R_AARCH64_TLSGD_MOVW_G1 515 /* G(TLSIDX(S+A)) - GOT */
> +#define R_AARCH64_TLSGD_MOVW_G0_NC 516 /* G(TLSIDX(S+A)) - GOT */
> + /* Local Dynamic TLS relocations */
> +#define R_AARCH64_TLSLD_ADR_PREL21 517 /* G(LDM(S))) - P */
> +#define R_AARCH64_TLSLD_ADR_PAGE21 518 /* Page(G(LDM(S)))-Page(P) */
> +#define R_AARCH64_TLSLD_ADD_LO12_NC 519 /* G(LDM(S)) */
> +#define R_AARCH64_TLSLD_MOVW_G1 520 /* G(LDM(S)) - GOT */
> +#define R_AARCH64_TLSLD_MOVW_G0_NC 521 /* G(LDM(S)) - GOT */
> +#define R_AARCH64_TLSLD_LD_PREL19 522 /* G(LDM(S)) - P */
> +#define R_AARCH64_TLSLD_MOVW_DTPREL_G2 523 /* DTPREL(S+A) */
> +#define R_AARCH64_TLSLD_MOVW_DTPREL_G1 524 /* DTPREL(S+A) */
> +#define R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC 525 /* DTPREL(S+A) */
> +#define R_AARCH64_TLSLD_MOVW_DTPREL_G0 526 /* DTPREL(S+A) */
> +#define R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC 527 /* DTPREL(S+A) */
> +#define R_AARCH64_TLSLD_ADD_DTPREL_HI12 528 /* DTPREL(S+A) */
> +#define R_AARCH64_TLSLD_ADD_DTPREL_LO12 529 /* DTPREL(S+A) */
> +#define R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC 530 /* DTPREL(S+A) */
> +#define R_AARCH64_TLSLD_LDST8_DTPREL_LO12 531 /* DTPREL(S+A) */
> +#define R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC 532 /* DTPREL(S+A) */
> +#define R_AARCH64_TLSLD_LDST16_DTPREL_LO12 533 /* DTPREL(S+A) */
> +#define R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC 534 /* DTPREL(S+A) */
> +#define R_AARCH64_TLSLD_LDST32_DTPREL_LO12 535 /* DTPREL(S+A) */
> +#define R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC 536 /* DTPREL(S+A) */
> +#define R_AARCH64_TLSLD_LDST64_DTPREL_LO12 537 /* DTPREL(S+A) */
> +#define R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC 538 /* DTPREL(S+A) */
> + /* Initial Exec TLS relocations */
> +#define R_AARCH64_TLSIE_MOVW_GOTTPREL_G1 539 /* G(TPREL(S+A)) - GOT */
> +#define R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC 540 /* G(TPREL(S+A)) - GOT */
> +#define R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 541 /* Page(G(TPREL(S+A))) - Page(P) */
> +#define R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC 542 /* G(TPREL(S+A)) */
> +#define R_AARCH64_TLSIE_LD_GOTTPREL_PREL19 543 /* G(TPREL(S+A)) - P */
> + /* Local Exec TLS relocations */
> +#define R_AARCH64_TLSLE_MOVW_TPREL_G2 544 /* TPREL(S+A) */
> +#define R_AARCH64_TLSLE_MOVW_TPREL_G1 545 /* TPREL(S+A) */
> +#define R_AARCH64_TLSLE_MOVW_TPREL_G1_NC 546 /* TPREL(S+A) */
> +#define R_AARCH64_TLSLE_MOVW_TPREL_G0 547 /* TPREL(S+A) */
> +#define R_AARCH64_TLSLE_MOVW_TPREL_G0_NC 548 /* TPREL(S+A) */
> +#define R_AARCH64_TLSLE_ADD_TPREL_HI12 549 /* TPREL(S+A) */
> +#define R_AARCH64_TLSLE_ADD_TPREL_LO12 550 /* TPREL(S+A) */
> +#define R_AARCH64_TLSLE_ADD_TPREL_LO12_NC 551 /* TPREL(S+A) */
> +#define R_AARCH64_TLSLE_LDST8_TPREL_LO12 552 /* TPREL(S+A) */
> +#define R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC 553 /* TPREL(S+A) */
> +#define R_AARCH64_TLSLE_LDST16_TPREL_LO12 554 /* TPREL(S+A) */
> +#define R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC 555 /* TPREL(S+A) */
> +#define R_AARCH64_TLSLE_LDST32_TPREL_LO12 556 /* TPREL(S+A) */
> +#define R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC 557 /* TPREL(S+A) */
> +#define R_AARCH64_TLSLE_LDST64_TPREL_LO12 558 /* TPREL(S+A) */
> +#define R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC 559 /* TPREL(S+A) */
> +/* Dynamic relocations */
> + /* Dynamic relocations */
> +#define R_AARCH64_COPY 1024
> +#define R_AARCH64_GLOB_DAT 1025 /* S + A */
> +#define R_AARCH64_JUMP_SLOT 1026 /* S + A */
> +#define R_AARCH64_RELATIVE 1027 /* Delta(S) + A , Delta(P) + A */
> +#define R_AARCH64_TLS_DTPREL64 1028 /* DTPREL(S+A) */
> +#define R_AARCH64_TLS_DTPMOD64 1029 /* LDM(S) */
> +#define R_AARCH64_TLS_TPREL64 1030 /* TPREL(S+A) */
> +#define R_AARCH64_TLS_DTPREL32 1031 /* DTPREL(S+A) */
> +#define R_AARCH64_TLS_DTPMOD32 1032 /* LDM(S) */
> +#define R_AARCH64_TLS_TPREL32 1033 /* DTPREL(S+A) */
> +
> +#define R_ALPHA_NONE 0 /* No reloc */
> +#define R_ALPHA_REFLONG 1 /* Direct 32 bit */
> +#define R_ALPHA_REFQUAD 2 /* Direct 64 bit */
> +#define R_ALPHA_GPREL32 3 /* GP relative 32 bit */
> +#define R_ALPHA_LITERAL 4 /* GP relative 16 bit w/optimization */
> +#define R_ALPHA_LITUSE 5 /* Optimization hint for LITERAL */
> +#define R_ALPHA_GPDISP 6 /* Add displacement to GP */
> +#define R_ALPHA_BRADDR 7 /* PC+4 relative 23 bit shifted */
> +#define R_ALPHA_HINT 8 /* PC+4 relative 16 bit shifted */
> +#define R_ALPHA_SREL16 9 /* PC relative 16 bit */
> +#define R_ALPHA_SREL32 10 /* PC relative 32 bit */
> +#define R_ALPHA_SREL64 11 /* PC relative 64 bit */
> +#define R_ALPHA_OP_PUSH 12 /* OP stack push */
> +#define R_ALPHA_OP_STORE 13 /* OP stack pop and store */
> +#define R_ALPHA_OP_PSUB 14 /* OP stack subtract */
> +#define R_ALPHA_OP_PRSHIFT 15 /* OP stack right shift */
> +#define R_ALPHA_GPVALUE 16
> +#define R_ALPHA_GPRELHIGH 17
> +#define R_ALPHA_GPRELLOW 18
> +#define R_ALPHA_IMMED_GP_16 19
> +#define R_ALPHA_IMMED_GP_HI32 20
> +#define R_ALPHA_IMMED_SCN_HI32 21
> +#define R_ALPHA_IMMED_BR_HI32 22
> +#define R_ALPHA_IMMED_LO32 23
> +#define R_ALPHA_COPY 24 /* Copy symbol at runtime */
> +#define R_ALPHA_GLOB_DAT 25 /* Create GOT entry */
> +#define R_ALPHA_JMP_SLOT 26 /* Create PLT entry */
> +#define R_ALPHA_RELATIVE 27 /* Adjust by program base */
> +
> +#define R_ARM_NONE 0 /* No relocation. */
> +#define R_ARM_PC24 1
> +#define R_ARM_ABS32 2
> +#define R_ARM_REL32 3
> +#define R_ARM_PC13 4
> +#define R_ARM_ABS16 5
> +#define R_ARM_ABS12 6
> +#define R_ARM_THM_ABS5 7
> +#define R_ARM_ABS8 8
> +#define R_ARM_SBREL32 9
> +#define R_ARM_THM_PC22 10
> +#define R_ARM_THM_PC8 11
> +#define R_ARM_AMP_VCALL9 12
> +#define R_ARM_SWI24 13
> +#define R_ARM_THM_SWI8 14
> +#define R_ARM_XPC25 15
> +#define R_ARM_THM_XPC22 16
> +#define R_ARM_COPY 20 /* Copy data from shared object. */
> +#define R_ARM_GLOB_DAT 21 /* Set GOT entry to data address. */
> +#define R_ARM_JUMP_SLOT 22 /* Set GOT entry to code address. */
> +#define R_ARM_RELATIVE 23 /* Add load address of shared object. */
> +#define R_ARM_GOTOFF 24 /* Add GOT-relative symbol address. */
> +#define R_ARM_GOTPC 25 /* Add PC-relative GOT table address. */
> +#define R_ARM_GOT32 26 /* Add PC-relative GOT offset. */
> +#define R_ARM_PLT32 27 /* Add PC-relative PLT offset. */
> +#define R_ARM_CALL 28
> +#define R_ARM_JMP24 29
> +#define R_ARM_THM_MOVW_ABS_NC 47
> +#define R_ARM_THM_MOVT_ABS 48
> +
> +// Block of PC-relative relocations added to work around gcc putting
> +// object relocations in static executables.
> +#define R_ARM_THM_JUMP24 30
> +#define R_ARM_PREL31 42
> +#define R_ARM_MOVW_PREL_NC 45
> +#define R_ARM_MOVT_PREL 46
> +#define R_ARM_THM_MOVW_PREL_NC 49
> +#define R_ARM_THM_MOVT_PREL 50
> +#define R_ARM_THM_JMP6 52
> +#define R_ARM_THM_ALU_PREL_11_0 53
> +#define R_ARM_THM_PC12 54
> +#define R_ARM_REL32_NOI 56
> +#define R_ARM_ALU_PC_G0_NC 57
> +#define R_ARM_ALU_PC_G0 58
> +#define R_ARM_ALU_PC_G1_NC 59
> +#define R_ARM_ALU_PC_G1 60
> +#define R_ARM_ALU_PC_G2 61
> +#define R_ARM_LDR_PC_G1 62
> +#define R_ARM_LDR_PC_G2 63
> +#define R_ARM_LDRS_PC_G0 64
> +#define R_ARM_LDRS_PC_G1 65
> +#define R_ARM_LDRS_PC_G2 66
> +#define R_ARM_LDC_PC_G0 67
> +#define R_ARM_LDC_PC_G1 68
> +#define R_ARM_LDC_PC_G2 69
> +#define R_ARM_GOT_PREL 96
> +#define R_ARM_THM_JUMP11 102
> +#define R_ARM_THM_JUMP8 103
> +#define R_ARM_TLS_GD32 104
> +#define R_ARM_TLS_LDM32 105
> +#define R_ARM_TLS_IE32 107
> +
> +#define R_ARM_THM_JUMP19 51
> +#define R_ARM_GNU_VTENTRY 100
> +#define R_ARM_GNU_VTINHERIT 101
> +#define R_ARM_RSBREL32 250
> +#define R_ARM_THM_RPC22 251
> +#define R_ARM_RREL32 252
> +#define R_ARM_RABS32 253
> +#define R_ARM_RPC24 254
> +#define R_ARM_RBASE 255
> +
> +#define R_PPC_NONE 0 /* No relocation. */
> +#define R_PPC_ADDR32 1
> +#define R_PPC_ADDR24 2
> +#define R_PPC_ADDR16 3
> +#define R_PPC_ADDR16_LO 4
> +#define R_PPC_ADDR16_HI 5
> +#define R_PPC_ADDR16_HA 6
> +#define R_PPC_ADDR14 7
> +#define R_PPC_ADDR14_BRTAKEN 8
> +#define R_PPC_ADDR14_BRNTAKEN 9
> +#define R_PPC_REL24 10
> +#define R_PPC_REL14 11
> +#define R_PPC_REL14_BRTAKEN 12
> +#define R_PPC_REL14_BRNTAKEN 13
> +#define R_PPC_GOT16 14
> +#define R_PPC_GOT16_LO 15
> +#define R_PPC_GOT16_HI 16
> +#define R_PPC_GOT16_HA 17
> +#define R_PPC_PLTREL24 18
> +#define R_PPC_COPY 19
> +#define R_PPC_GLOB_DAT 20
> +#define R_PPC_JMP_SLOT 21
> +#define R_PPC_RELATIVE 22
> +#define R_PPC_LOCAL24PC 23
> +#define R_PPC_UADDR32 24
> +#define R_PPC_UADDR16 25
> +#define R_PPC_REL32 26
> +#define R_PPC_PLT32 27
> +#define R_PPC_PLTREL32 28
> +#define R_PPC_PLT16_LO 29
> +#define R_PPC_PLT16_HI 30
> +#define R_PPC_PLT16_HA 31
> +#define R_PPC_SDAREL16 32
> +#define R_PPC_SECTOFF 33
> +#define R_PPC_SECTOFF_LO 34
> +#define R_PPC_SECTOFF_HI 35
> +#define R_PPC_SECTOFF_HA 36
> +
> +/*
> + * TLS relocations
> + */
> +#define R_PPC_TLS 67
> +#define R_PPC_DTPMOD32 68
> +#define R_PPC_TPREL16 69
> +#define R_PPC_TPREL16_LO 70
> +#define R_PPC_TPREL16_HI 71
> +#define R_PPC_TPREL16_HA 72
> +#define R_PPC_TPREL32 73
> +#define R_PPC_DTPREL16 74
> +#define R_PPC_DTPREL16_LO 75
> +#define R_PPC_DTPREL16_HI 76
> +#define R_PPC_DTPREL16_HA 77
> +#define R_PPC_DTPREL32 78
> +#define R_PPC_GOT_TLSGD16 79
> +#define R_PPC_GOT_TLSGD16_LO 80
> +#define R_PPC_GOT_TLSGD16_HI 81
> +#define R_PPC_GOT_TLSGD16_HA 82
> +#define R_PPC_GOT_TLSLD16 83
> +#define R_PPC_GOT_TLSLD16_LO 84
> +#define R_PPC_GOT_TLSLD16_HI 85
> +#define R_PPC_GOT_TLSLD16_HA 86
> +#define R_PPC_GOT_TPREL16 87
> +#define R_PPC_GOT_TPREL16_LO 88
> +#define R_PPC_GOT_TPREL16_HI 89
> +#define R_PPC_GOT_TPREL16_HA 90
> +
> +/*
> + * The remaining relocs are from the Embedded ELF ABI, and are not in the
> + * SVR4 ELF ABI.
> + */
> +
> +#define R_PPC_EMB_NADDR32 101
> +#define R_PPC_EMB_NADDR16 102
> +#define R_PPC_EMB_NADDR16_LO 103
> +#define R_PPC_EMB_NADDR16_HI 104
> +#define R_PPC_EMB_NADDR16_HA 105
> +#define R_PPC_EMB_SDAI16 106
> +#define R_PPC_EMB_SDA2I16 107
> +#define R_PPC_EMB_SDA2REL 108
> +#define R_PPC_EMB_SDA21 109
> +#define R_PPC_EMB_MRKREF 110
> +#define R_PPC_EMB_RELSEC16 111
> +#define R_PPC_EMB_RELST_LO 112
> +#define R_PPC_EMB_RELST_HI 113
> +#define R_PPC_EMB_RELST_HA 114
> +#define R_PPC_EMB_BIT_FLD 115
> +#define R_PPC_EMB_RELSDA 116
> +
> +#define R_SPARC_NONE 0
> +#define R_SPARC_8 1
> +#define R_SPARC_16 2
> +#define R_SPARC_32 3
> +#define R_SPARC_DISP8 4
> +#define R_SPARC_DISP16 5
> +#define R_SPARC_DISP32 6
> +#define R_SPARC_WDISP30 7
> +#define R_SPARC_WDISP22 8
> +#define R_SPARC_HI22 9
> +#define R_SPARC_22 10
> +#define R_SPARC_13 11
> +#define R_SPARC_LO10 12
> +#define R_SPARC_GOT10 13
> +#define R_SPARC_GOT13 14
> +#define R_SPARC_GOT22 15
> +#define R_SPARC_PC10 16
> +#define R_SPARC_PC22 17
> +#define R_SPARC_WPLT30 18
> +#define R_SPARC_COPY 19
> +#define R_SPARC_GLOB_DAT 20
> +#define R_SPARC_JMP_SLOT 21
> +#define R_SPARC_RELATIVE 22
> +#define R_SPARC_UA32 23
> +#define R_SPARC_PLT32 24
> +#define R_SPARC_HIPLT22 25
> +#define R_SPARC_LOPLT10 26
> +#define R_SPARC_PCPLT32 27
> +#define R_SPARC_PCPLT22 28
> +#define R_SPARC_PCPLT10 29
> +#define R_SPARC_10 30
> +#define R_SPARC_11 31
> +#define R_SPARC_64 32
> +#define R_SPARC_OLO10 33
> +#define R_SPARC_HH22 34
> +#define R_SPARC_HM10 35
> +#define R_SPARC_LM22 36
> +#define R_SPARC_PC_HH22 37
> +#define R_SPARC_PC_HM10 38
> +#define R_SPARC_PC_LM22 39
> +#define R_SPARC_WDISP16 40
> +#define R_SPARC_WDISP19 41
> +#define R_SPARC_GLOB_JMP 42
> +#define R_SPARC_7 43
> +#define R_SPARC_5 44
> +#define R_SPARC_6 45
> +#define R_SPARC_DISP64 46
> +#define R_SPARC_PLT64 47
> +#define R_SPARC_HIX22 48
> +#define R_SPARC_LOX10 49
> +#define R_SPARC_H44 50
> +#define R_SPARC_M44 51
> +#define R_SPARC_L44 52
> +#define R_SPARC_REGISTER 53
> +#define R_SPARC_UA64 54
> +#define R_SPARC_UA16 55
> +#define R_SPARC_TLS_GD_HI22 56
> +#define R_SPARC_TLS_GD_LO10 57
> +#define R_SPARC_TLS_GD_ADD 58
> +#define R_SPARC_TLS_GD_CALL 59
> +#define R_SPARC_TLS_LDM_HI22 60
> +#define R_SPARC_TLS_LDM_LO10 61
> +#define R_SPARC_TLS_LDM_ADD 62
> +#define R_SPARC_TLS_LDM_CALL 63
> +#define R_SPARC_TLS_LDO_HIX22 64
> +#define R_SPARC_TLS_LDO_LOX10 65
> +#define R_SPARC_TLS_LDO_ADD 66
> +#define R_SPARC_TLS_IE_HI22 67
> +#define R_SPARC_TLS_IE_LO10 68
> +#define R_SPARC_TLS_IE_LD 69
> +#define R_SPARC_TLS_IE_LDX 70
> +#define R_SPARC_TLS_IE_ADD 71
> +#define R_SPARC_TLS_LE_HIX22 72
> +#define R_SPARC_TLS_LE_LOX10 73
> +#define R_SPARC_TLS_DTPMOD32 74
> +#define R_SPARC_TLS_DTPMOD64 75
> +#define R_SPARC_TLS_DTPOFF32 76
> +#define R_SPARC_TLS_DTPOFF64 77
> +#define R_SPARC_TLS_TPOFF32 78
> +#define R_SPARC_TLS_TPOFF64 79
> +
> +#define R_X86_64_NONE 0 /* No relocation. */
> +#define R_X86_64_64 1 /* Add 64 bit symbol value. */
> +#define R_X86_64_PC32 2 /* PC-relative 32 bit signed sym value. */
> +#define R_X86_64_GOT32 3 /* PC-relative 32 bit GOT offset. */
> +#define R_X86_64_PLT32 4 /* PC-relative 32 bit PLT offset. */
> +#define R_X86_64_COPY 5 /* Copy data from shared object. */
> +#define R_X86_64_GLOB_DAT 6 /* Set GOT entry to data address. */
> +#define R_X86_64_JMP_SLOT 7 /* Set GOT entry to code address. */
> +#define R_X86_64_RELATIVE 8 /* Add load address of shared object. */
> +#define R_X86_64_GOTPCREL 9 /* Add 32 bit signed pcrel offset to GOT. */
> +#define R_X86_64_32 10 /* Add 32 bit zero extended symbol value */
> +#define R_X86_64_32S 11 /* Add 32 bit sign extended symbol value */
> +#define R_X86_64_16 12 /* Add 16 bit zero extended symbol value */
> +#define R_X86_64_PC16 13 /* Add 16 bit signed extended pc relative symbol value */
> +#define R_X86_64_8 14 /* Add 8 bit zero extended symbol value */
> +#define R_X86_64_PC8 15 /* Add 8 bit signed extended pc relative symbol value */
> +#define R_X86_64_DTPMOD64 16 /* ID of module containing symbol */
> +#define R_X86_64_DTPOFF64 17 /* Offset in TLS block */
> +#define R_X86_64_TPOFF64 18 /* Offset in static TLS block */
> +#define R_X86_64_TLSGD 19 /* PC relative offset to GD GOT entry */
> +#define R_X86_64_TLSLD 20 /* PC relative offset to LD GOT entry */
> +#define R_X86_64_DTPOFF32 21 /* Offset in TLS block */
> +#define R_X86_64_GOTTPOFF 22 /* PC relative offset to IE GOT entry */
> +#define R_X86_64_TPOFF32 23 /* Offset in static TLS block */
> +#define R_X86_64_PC64 24 /* PC relative 64 bit */
> +#define R_X86_64_GOTOFF64 25 /* 64 bit offset to GOT */
> +#define R_X86_64_GOTPC3 26 /* 32 bit signed pc relative offset to GOT */
> +#define R_X86_64_GOT64 27 /* 64-bit GOT entry offset */
> +#define R_X86_64_GOTPCREL64 28 /* 64-bit PC relative offset to GOT entry */
> +#define R_X86_64_GOTPC64 29 /* 64-bit PC relative offset to GOT */
> +#define R_X86_64_GOTPLT64 30 /* like GOT64, says PLT entry needed */
> +#define R_X86_64_PLTOFF64 31 /* 64-bit GOT relative offset to PLT entry */
> +#define R_X86_64_SIZE32 32 /* Size of symbol plus 32-bit addend */
> +#define R_X86_64_SIZE64 33 /* Size of symbol plus 64-bit addend */
> +#define R_X86_64_GOTPC32_TLSDESC 34 /* GOT offset for TLS descriptor. */
> +#define R_X86_64_TLSDESC_CALL 35 /* Marker for call through TLS descriptor. */
> +#define R_X86_64_TLSDESC 36 /* TLS descriptor. */
> +#define R_X86_64_IRELATIVE 37 /* Adjust indirectly by program base */
> +#define R_X86_64_RELATIVE64 38 /* 64-bit adjust by program base */
> +#define R_X86_64_GOTPCRELX 41 /* Load from 32 bit signed pc relative offset to GOT entry without REX prefix, relaxable. */
> +#define R_X86_64_REX_GOTPCRELX 42 /* Load from 32 bit signed pc relative offset to GOT entry with REX prefix, relaxable. */
> +
> +
> +#endif /* !_SYS_ELF_COMMON_H_ */
> diff --git a/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfLib.c b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfLib.c
> new file mode 100644
> index 0000000000..531b3486d2
> --- /dev/null
> +++ b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfLib.c
> @@ -0,0 +1,473 @@
> +/** @file
> + ELF library
> +
> + Copyright (c) 2019 - 2021, Intel Corporation. All rights reserved.<BR>
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include "ElfLibInternal.h"
> +
> +/**
> + Check if the ELF image is valid.
> +
> + @param[in] ImageBase Memory address of an image.
> +
> + @retval TRUE if valid.
> +
> +**/
> +BOOLEAN
> +IsElfFormat (
> + IN CONST UINT8 *ImageBase
You cannot safely inspect untrusted/unknown data without a size field,
also needs checks below.
> + )
> +{
> + Elf32_Ehdr *Elf32Hdr;
> + Elf64_Ehdr *Elf64Hdr;
> +
> + ASSERT (ImageBase != NULL);
> +
> + Elf32Hdr = (Elf32_Ehdr *)ImageBase;
> +
> + //
> + // Start with correct signature "\7fELF"
> + //
> + if ((Elf32Hdr->e_ident[EI_MAG0] != ELFMAG0) ||
> + (Elf32Hdr->e_ident[EI_MAG1] != ELFMAG1) ||
> + (Elf32Hdr->e_ident[EI_MAG1] != ELFMAG1) ||
> + (Elf32Hdr->e_ident[EI_MAG2] != ELFMAG2)
> + ) {
> + return FALSE;
> + }
> +
> + //
> + // Support little-endian only
> + //
> + if (Elf32Hdr->e_ident[EI_DATA] != ELFDATA2LSB) {
> + return FALSE;
> + }
> +
> + //
> + // Check 32/64-bit architecture
> + //
> + if (Elf32Hdr->e_ident[EI_CLASS] == ELFCLASS64) {
> + Elf64Hdr = (Elf64_Ehdr *)Elf32Hdr;
> + Elf32Hdr = NULL;
> + } else if (Elf32Hdr->e_ident[EI_CLASS] == ELFCLASS32) {
> + Elf64Hdr = NULL;
> + } else {
> + return FALSE;
> + }
Why are the branches above and below separated when they map basically 1:1?
> +
> + if (Elf64Hdr != NULL) {
> + //
> + // Support intel architecture only for now
> + //
> + if (Elf64Hdr->e_machine != EM_X86_64) {
> + return FALSE;
> + }
> +
> + //
> + // Support ELF types: EXEC (Executable file), DYN (Shared object file)
> + //
> + if ((Elf64Hdr->e_type != ET_EXEC) && (Elf64Hdr->e_type != ET_DYN)) {
> + return FALSE;
> + }
> +
> + //
> + // Support current ELF version only
> + //
> + if (Elf64Hdr->e_version != EV_CURRENT) {
> + return FALSE;
> + }
> + } else {
> + //
> + // Support intel architecture only for now
> + //
> + if (Elf32Hdr->e_machine != EM_386) {
> + return FALSE;
> + }
> +
> + //
> + // Support ELF types: EXEC (Executable file), DYN (Shared object file)
> + //
> + if ((Elf32Hdr->e_type != ET_EXEC) && (Elf32Hdr->e_type != ET_DYN)) {
> + return FALSE;
> + }
> +
> + //
> + // Support current ELF version only
> + //
> + if (Elf32Hdr->e_version != EV_CURRENT) {
> + return FALSE;
> + }
> + }
> + return TRUE;
> +}
> +
> +/**
> + Calculate a ELF file size.
> +
> + @param[in] ElfCt ELF image context pointer.
> + @param[out] FileSize Return the file size.
> +
> + @retval EFI_INVALID_PARAMETER ElfCt or SecPos is NULL.
> + @retval EFI_NOT_FOUND Could not find the section.
> + @retval EFI_SUCCESS Section posistion was filled successfully.
> +**/
> +EFI_STATUS
> +CalculateElfFileSize (
> + IN ELF_IMAGE_CONTEXT *ElfCt,
> + OUT UINTN *FileSize
> + )
> +{
> + EFI_STATUS Status;
> + UINTN FileSize1;
> + UINTN FileSize2;
> + Elf32_Ehdr *Elf32Hdr;
> + Elf64_Ehdr *Elf64Hdr;
> + UINTN Offset;
> + UINTN Size;
> +
> + if ((ElfCt == NULL) || (FileSize == NULL)) {
> + return EFI_INVALID_PARAMETER;
> + }
> +
> + // Use last section as end of file
> + Status = GetElfSectionPos (ElfCt, ElfCt->ShNum - 1, &Offset, &Size);
What if ShNum is 0?
> + if (EFI_ERROR(Status)) {
> + return EFI_UNSUPPORTED;
> + }
> + FileSize1 = Offset + Size;
> +
> + // Use end of section header as end of file
> + FileSize2 = 0;
> + if (ElfCt->EiClass == ELFCLASS32) {
> + Elf32Hdr = (Elf32_Ehdr *)ElfCt->FileBase;
> + FileSize2 = Elf32Hdr->e_shoff + Elf32Hdr->e_shentsize * Elf32Hdr->e_shnum;
> + } else if (ElfCt->EiClass == ELFCLASS64) {
> + Elf64Hdr = (Elf64_Ehdr *)ElfCt->FileBase;
> + FileSize2 = (UINTN)(Elf64Hdr->e_shoff + Elf64Hdr->e_shentsize * Elf64Hdr->e_shnum);
> + }
Overflows?
> +
> + *FileSize = MAX(FileSize1, FileSize2);
> +
> + return EFI_SUCCESS;
> +}
> +
> +/**
> + Get a ELF program segment loading info.
> +
> + @param[in] ImageBase Image base.
> + @param[in] EiClass ELF class.
> + @param[in] Index ELF segment index.
> + @param[out] SegInfo The pointer to the segment info.
> +
> + @retval EFI_INVALID_PARAMETER ElfCt or SecPos is NULL.
> + @retval EFI_NOT_FOUND Could not find the section.
> + @retval EFI_SUCCESS Section posistion was filled successfully.
> +**/
> +EFI_STATUS
> +GetElfSegmentInfo (
> + IN UINT8 *ImageBase,
> + IN UINT32 EiClass,
> + IN UINT32 Index,
> + OUT SEGMENT_INFO *SegInfo
> + )
> +{
> + Elf32_Phdr *Elf32Phdr;
> + Elf64_Phdr *Elf64Phdr;
> +
> + if ((ImageBase == NULL) || (SegInfo == NULL)) {
> + return EFI_INVALID_PARAMETER;
> + }
> +
> + if (EiClass == ELFCLASS32) {
> + Elf32Phdr = GetElf32SegmentByIndex (ImageBase, Index);
> + if (Elf32Phdr != NULL) {
> + SegInfo->PtType = Elf32Phdr->p_type;
> + SegInfo->Offset = Elf32Phdr->p_offset;
> + SegInfo->Length = Elf32Phdr->p_filesz;
> + SegInfo->MemLen = Elf32Phdr->p_memsz;
> + SegInfo->MemAddr = Elf32Phdr->p_paddr;
> + SegInfo->Alignment = Elf32Phdr->p_align;
> + return EFI_SUCCESS;
> + }
> + } else if (EiClass == ELFCLASS64) {
> + Elf64Phdr = GetElf64SegmentByIndex (ImageBase, Index);
> + if (Elf64Phdr != NULL) {
> + SegInfo->PtType = Elf64Phdr->p_type;
> + SegInfo->Offset = (UINTN)Elf64Phdr->p_offset;
> + SegInfo->Length = (UINTN)Elf64Phdr->p_filesz;
> + SegInfo->MemLen = (UINTN)Elf64Phdr->p_memsz;
> + SegInfo->MemAddr = (UINTN)Elf64Phdr->p_paddr;
> + SegInfo->Alignment = (UINTN)Elf64Phdr->p_align;
> + return EFI_SUCCESS;
> + }
> + }
> +
> + return EFI_NOT_FOUND;
> +}
> +
> +/**
> + Parse the ELF image info.
> +
> + On return, all fields in ElfCt are updated except ImageAddress.
> +
> + @param[in] ImageBase Memory address of an image.
> + @param[out] ElfCt The EFL image context pointer.
> +
> + @retval EFI_INVALID_PARAMETER Input parameters are not valid.
> + @retval EFI_UNSUPPORTED Unsupported binary type.
> + @retval EFI_LOAD_ERROR ELF binary loading error.
> + @retval EFI_SUCCESS ELF binary is loaded successfully.
> +**/
> +EFI_STATUS
> +EFIAPI
> +ParseElfImage (
> + IN VOID *ImageBase,
> + OUT ELF_IMAGE_CONTEXT *ElfCt
> + )
> +{
> + Elf32_Ehdr *Elf32Hdr;
> + Elf64_Ehdr *Elf64Hdr;
> + Elf32_Shdr *Elf32Shdr;
> + Elf64_Shdr *Elf64Shdr;
> + EFI_STATUS Status;
> + UINT32 Index;
> + SEGMENT_INFO SegInfo;
> + UINTN End;
> + UINTN Base;
> +
> + if (ElfCt == NULL) {
> + return EFI_INVALID_PARAMETER;
> + }
As this is function contract, I'd replace this with an ASSERT, or at
least have both.
> + ZeroMem (ElfCt, sizeof(ELF_IMAGE_CONTEXT));
> +
> + if (ImageBase == NULL) {
> + return (ElfCt->ParseStatus = EFI_INVALID_PARAMETER);
If I see it correctly, all instances that can assign ParseStatus also
return it. Why is the member needed at all?
> + }
> +
> + ElfCt->FileBase = (UINT8 *)ImageBase;
> + if (!IsElfFormat (ElfCt->FileBase)) {
> + return (ElfCt->ParseStatus = EFI_UNSUPPORTED);
> + }
> +
> + Elf32Hdr = (Elf32_Ehdr *)ElfCt->FileBase;
> + ElfCt->EiClass = Elf32Hdr->e_ident[EI_CLASS];
> + if (ElfCt->EiClass == ELFCLASS32) {
> + if ((Elf32Hdr->e_type != ET_EXEC) && (Elf32Hdr->e_type != ET_DYN)) {
> + return (ElfCt->ParseStatus = EFI_UNSUPPORTED);
> + }
> + Elf32Shdr = (Elf32_Shdr *)GetElf32SectionByIndex (ElfCt->FileBase, Elf32Hdr->e_shstrndx);
> + if (Elf32Shdr == NULL) {
> + return (ElfCt->ParseStatus = EFI_UNSUPPORTED);
> + }
> + ElfCt->EntryPoint = (UINTN)Elf32Hdr->e_entry;
> + ElfCt->ShNum = Elf32Hdr->e_shnum;
> + ElfCt->PhNum = Elf32Hdr->e_phnum;
> + ElfCt->ShStrLen = Elf32Shdr->sh_size;
> + ElfCt->ShStrOff = Elf32Shdr->sh_offset;
> + } else {
> + Elf64Hdr = (Elf64_Ehdr *)Elf32Hdr;
> + if ((Elf64Hdr->e_type != ET_EXEC) && (Elf64Hdr->e_type != ET_DYN)) {
> + return (ElfCt->ParseStatus = EFI_UNSUPPORTED);
> + }
> + Elf64Shdr = (Elf64_Shdr *)GetElf64SectionByIndex (ElfCt->FileBase, Elf64Hdr->e_shstrndx);
> + if (Elf64Shdr == NULL) {
> + return (ElfCt->ParseStatus = EFI_UNSUPPORTED);
> + }
> + ElfCt->EntryPoint = (UINTN)Elf64Hdr->e_entry;
> + ElfCt->ShNum = Elf64Hdr->e_shnum;
> + ElfCt->PhNum = Elf64Hdr->e_phnum;
> + ElfCt->ShStrLen = (UINT32)Elf64Shdr->sh_size;
> + ElfCt->ShStrOff = (UINT32)Elf64Shdr->sh_offset;
> + }
> +
> + //
> + // Get the preferred image base and required memory size when loaded to new location.
> + //
> + End = 0;
> + Base = MAX_UINT32;
> + ElfCt->ReloadRequired = FALSE;
> + for (Index = 0; Index < ElfCt->PhNum; Index++) {
> + Status = GetElfSegmentInfo (ElfCt->FileBase, ElfCt->EiClass, Index, &SegInfo);
> + ASSERT_EFI_ERROR (Status);
> +
> + if (SegInfo.PtType != PT_LOAD) {
> + continue;
> + }
> +
> + if (SegInfo.MemLen != SegInfo.Length) {
> + //
> + // Not enough space to execute at current location.
> + //
> + ElfCt->ReloadRequired = TRUE;
> + }
> +
> + if (Base > (SegInfo.MemAddr & ~(EFI_PAGE_SIZE - 1))) {
> + Base = SegInfo.MemAddr & ~(EFI_PAGE_SIZE - 1);
> + }
> + if (End < ALIGN_VALUE (SegInfo.MemAddr + SegInfo.MemLen, EFI_PAGE_SIZE) - 1) {
> + End = ALIGN_VALUE (SegInfo.MemAddr + SegInfo.MemLen, EFI_PAGE_SIZE) - 1;
> + }
> + }
> + //
> + // 0 - MAX_UINT32 + 1 equals to 0.
> + //
> + ElfCt->ImageSize = End - Base + 1;
> + ElfCt->PreferredImageAddress = (VOID *) Base;
> +
> + CalculateElfFileSize (ElfCt, &ElfCt->FileSize);
> + return (ElfCt->ParseStatus = EFI_SUCCESS);;
> +}
> +
> +/**
> + Load the ELF image to Context.ImageAddress.
> +
> + Context should be initialized by ParseElfImage().
> + Caller should set Context.ImageAddress to a proper value, either pointing to
> + a new allocated memory whose size equal to Context.ImageSize, or pointing
> + to Context.PreferredImageAddress.
> +
> + @param[in] ElfCt ELF image context pointer.
> +
> + @retval EFI_INVALID_PARAMETER Input parameters are not valid.
> + @retval EFI_UNSUPPORTED Unsupported binary type.
> + @retval EFI_LOAD_ERROR ELF binary loading error.
> + @retval EFI_SUCCESS ELF binary is loaded successfully.
> +**/
> +EFI_STATUS
> +EFIAPI
> +LoadElfImage (
> + IN ELF_IMAGE_CONTEXT *ElfCt
> + )
> +{
> + EFI_STATUS Status;
> +
> + if (ElfCt == NULL) {
> + return EFI_INVALID_PARAMETER;
> + }
> +
> + if (EFI_ERROR (ElfCt->ParseStatus)) {
> + return ElfCt->ParseStatus;
> + }
> +
> + if (ElfCt->ImageAddress == NULL) {
> + return EFI_INVALID_PARAMETER;
> + }
> +
> + Status = EFI_UNSUPPORTED;
> + if (ElfCt->EiClass == ELFCLASS32) {
> + Status = LoadElf32Image (ElfCt);
> + } else if (ElfCt->EiClass == ELFCLASS64) {
> + Status = LoadElf64Image (ElfCt);
> + }
> +
> + return Status;
> +}
> +
> +
> +/**
> + Get a ELF section name from its index.
> +
> + @param[in] ElfCt ELF image context pointer.
> + @param[in] SectionIndex ELF section index.
> + @param[out] SectionName The pointer to the section name.
> +
> + @retval EFI_INVALID_PARAMETER ElfCt or SecName is NULL.
> + @retval EFI_NOT_FOUND Could not find the section.
> + @retval EFI_SUCCESS Section name was filled successfully.
> +**/
> +EFI_STATUS
> +EFIAPI
> +GetElfSectionName (
> + IN ELF_IMAGE_CONTEXT *ElfCt,
> + IN UINT32 SectionIndex,
> + OUT CHAR8 **SectionName
> + )
> +{
> + Elf32_Shdr *Elf32Shdr;
> + Elf64_Shdr *Elf64Shdr;
> + CHAR8 *Name;
> +
> + if ((ElfCt == NULL) || (SectionName == NULL)) {
> + return EFI_INVALID_PARAMETER;
> + }
> +
> + if (EFI_ERROR (ElfCt->ParseStatus)) {
> + return ElfCt->ParseStatus;
> + }
> +
> + Name = NULL;
> + if (ElfCt->EiClass == ELFCLASS32) {
> + Elf32Shdr = GetElf32SectionByIndex (ElfCt->FileBase, SectionIndex);
> + if ((Elf32Shdr != NULL) && (Elf32Shdr->sh_name < ElfCt->ShStrLen)) {
> + Name = (CHAR8 *)(ElfCt->FileBase + ElfCt->ShStrOff + Elf32Shdr->sh_name);
> + }
> + } else if (ElfCt->EiClass == ELFCLASS64) {
> + Elf64Shdr = GetElf64SectionByIndex (ElfCt->FileBase, SectionIndex);
> + if ((Elf64Shdr != NULL) && (Elf64Shdr->sh_name < ElfCt->ShStrLen)) {
> + Name = (CHAR8 *)(ElfCt->FileBase + ElfCt->ShStrOff + Elf64Shdr->sh_name);
0-termination checks, or return size?
> + }
> + }
> +
> + if (Name == NULL) {
> + return EFI_NOT_FOUND;
> + }
> +
> + *SectionName = Name;
> + return EFI_SUCCESS;
> +}
> +
> +
> +/**
> + Get the offset and size of x-th ELF section.
> +
> + @param[in] ElfCt ELF image context pointer.
> + @param[in] Index ELF section index.
> + @param[out] Offset Return the offset of the specific section.
> + @param[out] Size Return the size of the specific section.
> +
> + @retval EFI_INVALID_PARAMETER ImageBase, Offset or Size is NULL.
> + @retval EFI_INVALID_PARAMETER EiClass doesn't equal to ELFCLASS32 or ELFCLASS64.
> + @retval EFI_NOT_FOUND Could not find the section.
> + @retval EFI_SUCCESS Offset and Size are returned.
> +**/
> +EFI_STATUS
> +EFIAPI
> +GetElfSectionPos (
> + IN ELF_IMAGE_CONTEXT *ElfCt,
> + IN UINT32 Index,
> + OUT UINTN *Offset,
> + OUT UINTN *Size
> + )
> +{
> + Elf32_Shdr *Elf32Shdr;
> + Elf64_Shdr *Elf64Shdr;
> +
> + if ((ElfCt == NULL) || (Offset == NULL) || (Size == NULL)) {
> + return EFI_INVALID_PARAMETER;
> + }
> +
> + if (EFI_ERROR (ElfCt->ParseStatus)) {
> + return ElfCt->ParseStatus;
> + }
> +
> + if (ElfCt->EiClass == ELFCLASS32) {
> + Elf32Shdr = GetElf32SectionByIndex (ElfCt->FileBase, Index);
> + if (Elf32Shdr != NULL) {
> + *Offset = (UINTN)Elf32Shdr->sh_offset;
> + *Size = (UINTN)Elf32Shdr->sh_size;
> + return EFI_SUCCESS;
> + }
> + } else if (ElfCt->EiClass == ELFCLASS64) {
> + Elf64Shdr = GetElf64SectionByIndex (ElfCt->FileBase, Index);
> + if (Elf64Shdr != NULL) {
> + *Offset = (UINTN)Elf64Shdr->sh_offset;
> + *Size = (UINTN)Elf64Shdr->sh_size;
> + return EFI_SUCCESS;
> + }
> + }
> +
> + return EFI_NOT_FOUND;
> +}
> diff --git a/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfLibInternal.h b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfLibInternal.h
> new file mode 100644
> index 0000000000..3c782807e2
> --- /dev/null
> +++ b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfLibInternal.h
> @@ -0,0 +1,109 @@
> +/** @file
> + ELF library
> +
> + Copyright (c) 2019 - 2021, Intel Corporation. All rights reserved.<BR>
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#ifndef EFI_LIB_INTERNAL_H_
> +#define EFI_LIB_INTERNAL_H_
> +
> +#include <Library/BaseLib.h>
> +#include <Library/DebugLib.h>
> +#include <Library/BaseMemoryLib.h>
> +#include "ElfLib.h"
> +#include "ElfCommon.h"
> +#include "Elf32.h"
> +#include "Elf64.h"
> +
> +#define ELF_NEXT_ENTRY(EntryType, Current, EntrySize) \
> + ((EntryType *) ((UINT8 *)Current + EntrySize))
> +
> +
> +/**
> + Return the section header specified by Index.
> +
> + @param ImageBase The image base.
> + @param Index The section index.
> +
> + @return Pointer to the section header.
> +**/
> +Elf32_Shdr *
> +GetElf32SectionByIndex (
> + IN UINT8 *ImageBase,
> + IN UINT32 Index
> + );
> +
> +/**
> + Return the section header specified by Index.
> +
> + @param ImageBase The image base.
> + @param Index The section index.
> +
> + @return Pointer to the section header.
> +**/
> +Elf64_Shdr *
> +GetElf64SectionByIndex (
> + IN UINT8 *ImageBase,
> + IN UINT32 Index
> + );
> +
> +/**
> + Return the segment header specified by Index.
> +
> + @param ImageBase The image base.
> + @param Index The segment index.
> +
> + @return Pointer to the segment header.
> +**/
> +Elf32_Phdr *
> +GetElf32SegmentByIndex (
> + IN UINT8 *ImageBase,
> + IN UINT32 Index
> + );
> +
> +/**
> + Return the segment header specified by Index.
> +
> + @param ImageBase The image base.
> + @param Index The segment index.
> +
> + @return Pointer to the segment header.
> +**/
> +Elf64_Phdr *
> +GetElf64SegmentByIndex (
> + IN UINT8 *ImageBase,
> + IN UINT32 Index
> + );
> +
> +/**
> + Load ELF image which has 32-bit architecture
> +
> + @param[in] ElfCt ELF image context pointer.
> +
> + @retval EFI_SUCCESS ELF binary is loaded successfully.
> + @retval Others Loading ELF binary fails.
> +
> +**/
> +EFI_STATUS
> +LoadElf32Image (
> + IN ELF_IMAGE_CONTEXT *ElfCt
> + );
> +
> +/**
> + Load ELF image which has 64-bit architecture
> +
> + @param[in] ImageBase Memory address of an image.
> + @param[out] EntryPoint The entry point of loaded ELF image.
> +
> + @retval EFI_SUCCESS ELF binary is loaded successfully.
> + @retval Others Loading ELF binary fails.
> +
> +**/
> +EFI_STATUS
> +LoadElf64Image (
> + IN ELF_IMAGE_CONTEXT *ElfCt
> + );
> +
> +#endif
> diff --git a/UefiPayloadPkg/PayloadLoaderPeim/PayloadLoaderPeim.c b/UefiPayloadPkg/PayloadLoaderPeim/PayloadLoaderPeim.c
> new file mode 100644
> index 0000000000..44639f9fd2
> --- /dev/null
> +++ b/UefiPayloadPkg/PayloadLoaderPeim/PayloadLoaderPeim.c
> @@ -0,0 +1,187 @@
> +/** @file
> + ELF Load Image Support
> +
> +Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> +SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include <PiPei.h>
> +#include <UniversalPayload/UniversalPayload.h>
> +#include <UniversalPayload/ExtraData.h>
> +
> +#include <Ppi/LoadFile.h>
> +
> +#include <Library/DebugLib.h>
> +#include <Library/HobLib.h>
> +#include <Library/PeiServicesLib.h>
> +#include <Library/MemoryAllocationLib.h>
> +#include <Library/BaseMemoryLib.h>
> +
> +#include "ElfLib.h"
> +
> +/**
> + The wrapper function of PeiLoadImageLoadImage().
> +
> + @param This - Pointer to EFI_PEI_LOAD_FILE_PPI.
> + @param FileHandle - Pointer to the FFS file header of the image.
> + @param ImageAddressArg - Pointer to PE/TE image.
> + @param ImageSizeArg - Size of PE/TE image.
> + @param EntryPoint - Pointer to entry point of specified image file for output.
> + @param AuthenticationState - Pointer to attestation authentication state of image.
> +
> + @return Status of PeiLoadImageLoadImage().
> +
> +**/
> +EFI_STATUS
> +EFIAPI
> +PeiLoadFileLoadPayload (
> + IN CONST EFI_PEI_LOAD_FILE_PPI *This,
> + IN EFI_PEI_FILE_HANDLE FileHandle,
> + OUT EFI_PHYSICAL_ADDRESS *ImageAddressArg, OPTIONAL
> + OUT UINT64 *ImageSizeArg, OPTIONAL
> + OUT EFI_PHYSICAL_ADDRESS *EntryPoint,
> + OUT UINT32 *AuthenticationState
> + )
> +{
> + EFI_STATUS Status;
> + VOID *Elf;
> + PLD_EXTRA_DATA *ExtraData;
> + ELF_IMAGE_CONTEXT Context;
> + PLD_INFO_HEADER *PldInfo;
> + UINT32 Index;
> + UINT16 ExtraDataIndex;
> + CHAR8 *SectionName;
> + UINTN Offset;
> + UINTN Size;
> + UINT32 ExtraDataCount;
> + UINTN Instance;
> +
> + //
> + // ELF is added to file as RAW section for EDKII bootloader.
> + // But RAW section might be added by build tool before the ELF RAW section when alignment is specified for ELF RAW section.
> + // Below loop skips the RAW section that doesn't contain valid ELF image.
> + //
> + Instance = 0;
> + do {
> + Status = PeiServicesFfsFindSectionData3 (EFI_SECTION_RAW, Instance++, FileHandle, &Elf, AuthenticationState);
> + if (EFI_ERROR (Status)) {
> + return Status;
> + }
> +
> + ZeroMem (&Context, sizeof (Context));
This is done by the callee already.
> + Status = ParseElfImage (Elf, &Context);
> + } while (EFI_ERROR (Status));
> +
> + DEBUG ((
> + DEBUG_INFO, "Payload File Size: 0x%08X, Mem Size: 0x%08x, Reload: %d\n",
> + Context.FileSize, Context.ImageSize, Context.ReloadRequired
> + ));
> +
> + //
> + // Get PLD_INFO and number of additional PLD sections.
> + //
> + PldInfo = NULL;
> + ExtraDataCount = 0;
> + for (Index = 0; Index < Context.ShNum; Index++) {
> + Status = GetElfSectionName (&Context, Index, &SectionName);
> + if (EFI_ERROR(Status)) {
> + continue;
> + }
> + DEBUG ((DEBUG_INFO, "Payload Section[%d]: %a\n", Index, SectionName));
> + if (AsciiStrCmp(SectionName, PLD_INFO_SEC_NAME) == 0) {
> + Status = GetElfSectionPos (&Context, Index, &Offset, &Size);
> + if (!EFI_ERROR(Status)) {
> + PldInfo = (PLD_INFO_HEADER *)(Context.FileBase + Offset);
> + }
> + } else if (AsciiStrnCmp(SectionName, PLD_EXTRA_SEC_NAME_PREFIX, PLD_EXTRA_SEC_NAME_PREFIX_LENGTH) == 0) {
> + Status = GetElfSectionPos (&Context, Index, &Offset, &Size);
> + if (!EFI_ERROR (Status)) {
> + ExtraDataCount++;
> + }
> + }
> + }
> +
> + //
> + // Report the additional PLD sections through HOB.
> + //
> + ExtraData = BuildGuidHob (
> + &gPldExtraDataGuid,
> + sizeof (PLD_EXTRA_DATA) + ExtraDataCount * sizeof (PLD_EXTRA_DATA_ENTRY)
> + );
> + ExtraData->Count = ExtraDataCount;
> + if (ExtraDataCount != 0) {
> + for (ExtraDataIndex = 0, Index = 0; Index < Context.ShNum; Index++) {
> + Status = GetElfSectionName (&Context, Index, &SectionName);
> + if (EFI_ERROR(Status)) {
> + continue;
> + }
> + if (AsciiStrnCmp(SectionName, PLD_EXTRA_SEC_NAME_PREFIX, PLD_EXTRA_SEC_NAME_PREFIX_LENGTH) == 0) {
> + Status = GetElfSectionPos (&Context, Index, &Offset, &Size);
> + if (!EFI_ERROR (Status)) {
> + ASSERT (ExtraDataIndex < ExtraDataCount);
> + AsciiStrCpyS (
> + ExtraData->Entry[ExtraDataIndex].Identifier,
> + sizeof(ExtraData->Entry[ExtraDataIndex].Identifier),
> + SectionName + PLD_EXTRA_SEC_NAME_PREFIX_LENGTH
> + );
> + ExtraData->Entry[ExtraDataIndex].Base = (UINTN)(Context.FileBase + Offset);
> + ExtraData->Entry[ExtraDataIndex].Size = Size;
> + ExtraDataIndex++;
> + }
> + }
> + }
> + }
> +
> + if (Context.ReloadRequired || Context.PreferredImageAddress != Context.FileBase) {
> + Context.ImageAddress = AllocatePages (EFI_SIZE_TO_PAGES (Context.ImageSize));
> + } else {
> + Context.ImageAddress = Context.FileBase;
> + }
> +
> + //
> + // Load ELF into the required base
> + //
> + Status = LoadElfImage (&Context);
> + if (!EFI_ERROR(Status)) {
> + *ImageAddressArg = (UINTN) Context.ImageAddress;
> + *EntryPoint = Context.EntryPoint;
> + *ImageSizeArg = Context.ImageSize;
> + }
> + return Status;
> +}
> +
> +
> +EFI_PEI_LOAD_FILE_PPI mPeiLoadFilePpi = {
> + PeiLoadFileLoadPayload
> +};
> +
> +
> +EFI_PEI_PPI_DESCRIPTOR gPpiLoadFilePpiList = {
> + (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
> + &gEfiPeiLoadFilePpiGuid,
> + &mPeiLoadFilePpi
> +};
> +/**
> +
> + Install Pei Load File PPI.
> +
> + @param FileHandle Handle of the file being invoked.
> + @param PeiServices Describes the list of possible PEI Services.
> +
> + @retval EFI_SUCESS The entry point executes successfully.
> + @retval Others Some error occurs during the execution of this function.
> +
> +**/
> +EFI_STATUS
> +EFIAPI
> +InitializePayloadLoaderPeim (
> + IN EFI_PEI_FILE_HANDLE FileHandle,
> + IN CONST EFI_PEI_SERVICES **PeiServices
> + )
> +{
> + EFI_STATUS Status;
> + Status = PeiServicesInstallPpi (&gPpiLoadFilePpiList);
> +
> + return Status;
> +}
> diff --git a/UefiPayloadPkg/PayloadLoaderPeim/PayloadLoaderPeim.inf b/UefiPayloadPkg/PayloadLoaderPeim/PayloadLoaderPeim.inf
> new file mode 100644
> index 0000000000..c45f3ecf2d
> --- /dev/null
> +++ b/UefiPayloadPkg/PayloadLoaderPeim/PayloadLoaderPeim.inf
> @@ -0,0 +1,59 @@
> +## @file
> +# Produce LoadFile PPI for ELF loading.
> +#
> +# Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
> +#
> +# SPDX-License-Identifier: BSD-2-Clause-Patent
> +#
> +##
> +
> +[Defines]
> + INF_VERSION = 0x00010005
> + BASE_NAME = ElfLoaderPeim
> + FILE_GUID = D071A3B4-3EC1-40C5-BEF8-D0BD4A2446F0
> + MODULE_TYPE = PEIM
> + VERSION_STRING = 1.0
> +
> + ENTRY_POINT = InitializePayloadLoaderPeim
> +
> +#
> +# The following information is for reference only and not required by the build tools.
> +#
> +# VALID_ARCHITECTURES = IA32 X64
> +#
> +
> +[Sources]
> + PayloadLoaderPeim.c
> + ElfLib.h
> + ElfLib/ElfLibInternal.h
> + ElfLib/ElfCommon.h
> + ElfLib/Elf32.h
> + ElfLib/Elf64.h
> + ElfLib/ElfLibInternal.h
> + ElfLib/ElfLib.c
> + ElfLib/Elf32Lib.c
> + ElfLib/Elf64Lib.c
> +
> +[Packages]
> + MdePkg/MdePkg.dec
> + MdeModulePkg/MdeModulePkg.dec
> + UefiPayloadPkg/UefiPayloadPkg.dec
> +
> +[LibraryClasses]
> + PcdLib
> + MemoryAllocationLib
> + BaseMemoryLib
> + PeiServicesLib
> + HobLib
> + BaseLib
> + PeimEntryPoint
> + DebugLib
> +
> +[Ppis]
> + gEfiPeiLoadFilePpiGuid ## PRODUCES
> +
> +[Guids]
> + gPldExtraDataGuid ## PRODUCES
> +
> +[Depex]
> + TRUE
> \ No newline at end of file
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#76152): https://edk2.groups.io/g/devel/message/76152
Mute This Topic: https://groups.io/mt/83277976/1813853
Group Owner: devel+owner at edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [edk2-devel-archive at redhat.com]
-=-=-=-=-=-=-=-=-=-=-=-
More information about the edk2-devel-archive
mailing list