Re: [PATCH v2 2/3] UefiPayloadPkg: Add PayloadLoaderPeim which can load ELF payload


Guo Dong
 

Reviewed-by: Guo Dong <guo.dong@...>

-----Original Message-----
From: Ni, Ray <ray.ni@...>
Sent: Wednesday, June 2, 2021 11:23 PM
To: devel@edk2.groups.io
Cc: Ma, Maurice <maurice.ma@...>; Dong, Guo
<guo.dong@...>; You, Benjamin <benjamin.you@...>
Subject: [PATCH v2 2/3] UefiPayloadPkg: Add PayloadLoaderPeim which can
load ELF payload

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@...>
Signed-off-by: Ray Ni <ray.ni@...>
Cc: Maurice Ma <maurice.ma@...>
Cc: Guo Dong <guo.dong@...>
Cc: Benjamin You <benjamin.you@...>
---
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

+ ; 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);

+ 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));

+ }

+ }

+ 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));

+

+ //

+ // 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

+ ; 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);

+

+ //

+ // 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);

+ 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);
+}

+

+/**

+ 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),

+ 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

+ )

+{

+ 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;

+ }

+

+ 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);

+ 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);

+ }

+

+ *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;

+ }

+ ZeroMem (ElfCt, sizeof(ELF_IMAGE_CONTEXT));

+

+ if (ImageBase == NULL) {

+ return (ElfCt->ParseStatus = EFI_INVALID_PARAMETER);

+ }

+

+ 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);
+ }

+ }

+

+ 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));

+ 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
--
2.31.1.windows.1

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