Message-ID: <ede77086-e1b1-44a4-9016-efcfeb744dab@arm.com>
Date: Fri, 28 Feb 2025 12:25:59 +0000
From: Vincenzo Frascino <vincenzo.frascino@....com>
To: Thomas Weißschuh <thomas.weissschuh@...utronix.de>,
 Kees Cook <kees@...nel.org>, Eric Biederman <ebiederm@...ssion.com>,
 Shuah Khan <shuah@...nel.org>, Nathan Chancellor <nathan@...nel.org>,
 Nick Desaulniers <ndesaulniers@...gle.com>, Bill Wendling
 <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>,
 Andy Lutomirski <luto@...nel.org>, Thomas Gleixner <tglx@...utronix.de>,
 Willy Tarreau <w@....eu>, Thomas Weißschuh
 <linux@...ssschuh.net>
Cc: "Jason A. Donenfeld" <Jason@...c4.com>,
 Christophe Leroy <christophe.leroy@...roup.eu>, linux-mm@...ck.org,
 linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
 llvm@...ts.linux.dev
Subject: Re: [PATCH v2 07/16] tools/include: Add uapi/linux/elf.h



On 26/02/2025 11:44, Thomas Weißschuh wrote:
> It will be used by the vDSO selftests.
> 
> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>

Reviewed-by: Vincenzo Frascino <vincenzo.frascino@....com>

> ---
>  tools/include/uapi/linux/elf.h | 524 +++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 524 insertions(+)
> 
> diff --git a/tools/include/uapi/linux/elf.h b/tools/include/uapi/linux/elf.h
> new file mode 100644
> index 0000000000000000000000000000000000000000..3d0935a11613bbcf8c381188de3a10bafd6cc29f
> --- /dev/null
> +++ b/tools/include/uapi/linux/elf.h
> @@ -0,0 +1,524 @@
> +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
> +#ifndef _LINUX_ELF_H
> +#define _LINUX_ELF_H
> +
> +#include <linux/types.h>
> +#include <linux/elf-em.h>
> +
> +/* 32-bit ELF base types. */
> +typedef __u32	Elf32_Addr;
> +typedef __u16	Elf32_Half;
> +typedef __u32	Elf32_Off;
> +typedef __s32	Elf32_Sword;
> +typedef __u32	Elf32_Word;
> +typedef __u16	Elf32_Versym;
> +
> +/* 64-bit ELF base types. */
> +typedef __u64	Elf64_Addr;
> +typedef __u16	Elf64_Half;
> +typedef __s16	Elf64_SHalf;
> +typedef __u64	Elf64_Off;
> +typedef __s32	Elf64_Sword;
> +typedef __u32	Elf64_Word;
> +typedef __u64	Elf64_Xword;
> +typedef __s64	Elf64_Sxword;
> +typedef __u16	Elf64_Versym;
> +
> +/* These constants are for the segment types stored in the image headers */
> +#define PT_NULL    0
> +#define PT_LOAD    1
> +#define PT_DYNAMIC 2
> +#define PT_INTERP  3
> +#define PT_NOTE    4
> +#define PT_SHLIB   5
> +#define PT_PHDR    6
> +#define PT_TLS     7               /* Thread local storage segment */
> +#define PT_LOOS    0x60000000      /* OS-specific */
> +#define PT_HIOS    0x6fffffff      /* OS-specific */
> +#define PT_LOPROC  0x70000000
> +#define PT_HIPROC  0x7fffffff
> +#define PT_GNU_EH_FRAME	(PT_LOOS + 0x474e550)
> +#define PT_GNU_STACK	(PT_LOOS + 0x474e551)
> +#define PT_GNU_RELRO	(PT_LOOS + 0x474e552)
> +#define PT_GNU_PROPERTY	(PT_LOOS + 0x474e553)
> +
> +
> +/* ARM MTE memory tag segment type */
> +#define PT_AARCH64_MEMTAG_MTE	(PT_LOPROC + 0x2)
> +
> +/*
> + * Extended Numbering
> + *
> + * If the real number of program header table entries is larger than
> + * or equal to PN_XNUM(0xffff), it is set to sh_info field of the
> + * section header at index 0, and PN_XNUM is set to e_phnum
> + * field. Otherwise, the section header at index 0 is zero
> + * initialized, if it exists.
> + *
> + * Specifications are available in:
> + *
> + * - Oracle: Linker and Libraries.
> + *   Part No: 817–1984–19, August 2011.
> + *   https://docs.oracle.com/cd/E18752_01/pdf/817-1984.pdf
> + *
> + * - System V ABI AMD64 Architecture Processor Supplement
> + *   Draft Version 0.99.4,
> + *   January 13, 2010.
> + *   http://www.cs.washington.edu/education/courses/cse351/12wi/supp-docs/abi.pdf
> + */
> +#define PN_XNUM 0xffff
> +
> +/* These constants define the different elf file types */
> +#define ET_NONE   0
> +#define ET_REL    1
> +#define ET_EXEC   2
> +#define ET_DYN    3
> +#define ET_CORE   4
> +#define ET_LOPROC 0xff00
> +#define ET_HIPROC 0xffff
> +
> +/* This is the info that is needed to parse the dynamic section of the file */
> +#define DT_NULL		0
> +#define DT_NEEDED	1
> +#define DT_PLTRELSZ	2
> +#define DT_PLTGOT	3
> +#define DT_HASH		4
> +#define DT_STRTAB	5
> +#define DT_SYMTAB	6
> +#define DT_RELA		7
> +#define DT_RELASZ	8
> +#define DT_RELAENT	9
> +#define DT_STRSZ	10
> +#define DT_SYMENT	11
> +#define DT_INIT		12
> +#define DT_FINI		13
> +#define DT_SONAME	14
> +#define DT_RPATH	15
> +#define DT_SYMBOLIC	16
> +#define DT_REL	        17
> +#define DT_RELSZ	18
> +#define DT_RELENT	19
> +#define DT_PLTREL	20
> +#define DT_DEBUG	21
> +#define DT_TEXTREL	22
> +#define DT_JMPREL	23
> +#define DT_ENCODING	32
> +#define OLD_DT_LOOS	0x60000000
> +#define DT_LOOS		0x6000000d
> +#define DT_HIOS		0x6ffff000
> +#define DT_VALRNGLO	0x6ffffd00
> +#define DT_VALRNGHI	0x6ffffdff
> +#define DT_ADDRRNGLO	0x6ffffe00
> +#define DT_GNU_HASH	0x6ffffef5
> +#define DT_ADDRRNGHI	0x6ffffeff
> +#define DT_VERSYM	0x6ffffff0
> +#define DT_RELACOUNT	0x6ffffff9
> +#define DT_RELCOUNT	0x6ffffffa
> +#define DT_FLAGS_1	0x6ffffffb
> +#define DT_VERDEF	0x6ffffffc
> +#define	DT_VERDEFNUM	0x6ffffffd
> +#define DT_VERNEED	0x6ffffffe
> +#define	DT_VERNEEDNUM	0x6fffffff
> +#define OLD_DT_HIOS     0x6fffffff
> +#define DT_LOPROC	0x70000000
> +#define DT_HIPROC	0x7fffffff
> +
> +/* This info is needed when parsing the symbol table */
> +#define STB_LOCAL  0
> +#define STB_GLOBAL 1
> +#define STB_WEAK   2
> +
> +#define STN_UNDEF 0
> +
> +#define STT_NOTYPE  0
> +#define STT_OBJECT  1
> +#define STT_FUNC    2
> +#define STT_SECTION 3
> +#define STT_FILE    4
> +#define STT_COMMON  5
> +#define STT_TLS     6
> +
> +#define VER_FLG_BASE 0x1
> +#define VER_FLG_WEAK 0x2
> +
> +#define ELF_ST_BIND(x)		((x) >> 4)
> +#define ELF_ST_TYPE(x)		((x) & 0xf)
> +#define ELF32_ST_BIND(x)	ELF_ST_BIND(x)
> +#define ELF32_ST_TYPE(x)	ELF_ST_TYPE(x)
> +#define ELF64_ST_BIND(x)	ELF_ST_BIND(x)
> +#define ELF64_ST_TYPE(x)	ELF_ST_TYPE(x)
> +
> +typedef struct {
> +  Elf32_Sword d_tag;
> +  union {
> +    Elf32_Sword	d_val;
> +    Elf32_Addr	d_ptr;
> +  } d_un;
> +} Elf32_Dyn;
> +
> +typedef struct {
> +  Elf64_Sxword d_tag;		/* entry tag value */
> +  union {
> +    Elf64_Xword d_val;
> +    Elf64_Addr d_ptr;
> +  } d_un;
> +} Elf64_Dyn;
> +
> +/* The following are used with relocations */
> +#define ELF32_R_SYM(x) ((x) >> 8)
> +#define ELF32_R_TYPE(x) ((x) & 0xff)
> +
> +#define ELF64_R_SYM(i)			((i) >> 32)
> +#define ELF64_R_TYPE(i)			((i) & 0xffffffff)
> +
> +typedef struct elf32_rel {
> +  Elf32_Addr	r_offset;
> +  Elf32_Word	r_info;
> +} Elf32_Rel;
> +
> +typedef struct elf64_rel {
> +  Elf64_Addr r_offset;	/* Location at which to apply the action */
> +  Elf64_Xword r_info;	/* index and type of relocation */
> +} Elf64_Rel;
> +
> +typedef struct elf32_rela {
> +  Elf32_Addr	r_offset;
> +  Elf32_Word	r_info;
> +  Elf32_Sword	r_addend;
> +} Elf32_Rela;
> +
> +typedef struct elf64_rela {
> +  Elf64_Addr r_offset;	/* Location at which to apply the action */
> +  Elf64_Xword r_info;	/* index and type of relocation */
> +  Elf64_Sxword r_addend;	/* Constant addend used to compute value */
> +} Elf64_Rela;
> +
> +typedef struct elf32_sym {
> +  Elf32_Word	st_name;
> +  Elf32_Addr	st_value;
> +  Elf32_Word	st_size;
> +  unsigned char	st_info;
> +  unsigned char	st_other;
> +  Elf32_Half	st_shndx;
> +} Elf32_Sym;
> +
> +typedef struct elf64_sym {
> +  Elf64_Word st_name;		/* Symbol name, index in string tbl */
> +  unsigned char	st_info;	/* Type and binding attributes */
> +  unsigned char	st_other;	/* No defined meaning, 0 */
> +  Elf64_Half st_shndx;		/* Associated section index */
> +  Elf64_Addr st_value;		/* Value of the symbol */
> +  Elf64_Xword st_size;		/* Associated symbol size */
> +} Elf64_Sym;
> +
> +
> +#define EI_NIDENT	16
> +
> +typedef struct elf32_hdr {
> +  unsigned char	e_ident[EI_NIDENT];
> +  Elf32_Half	e_type;
> +  Elf32_Half	e_machine;
> +  Elf32_Word	e_version;
> +  Elf32_Addr	e_entry;  /* Entry point */
> +  Elf32_Off	e_phoff;
> +  Elf32_Off	e_shoff;
> +  Elf32_Word	e_flags;
> +  Elf32_Half	e_ehsize;
> +  Elf32_Half	e_phentsize;
> +  Elf32_Half	e_phnum;
> +  Elf32_Half	e_shentsize;
> +  Elf32_Half	e_shnum;
> +  Elf32_Half	e_shstrndx;
> +} Elf32_Ehdr;
> +
> +typedef struct elf64_hdr {
> +  unsigned char	e_ident[EI_NIDENT];	/* ELF "magic number" */
> +  Elf64_Half e_type;
> +  Elf64_Half e_machine;
> +  Elf64_Word e_version;
> +  Elf64_Addr e_entry;		/* Entry point virtual address */
> +  Elf64_Off e_phoff;		/* Program header table file offset */
> +  Elf64_Off e_shoff;		/* Section header table file offset */
> +  Elf64_Word e_flags;
> +  Elf64_Half e_ehsize;
> +  Elf64_Half e_phentsize;
> +  Elf64_Half e_phnum;
> +  Elf64_Half e_shentsize;
> +  Elf64_Half e_shnum;
> +  Elf64_Half e_shstrndx;
> +} Elf64_Ehdr;
> +
> +/* These constants define the permissions on sections in the program
> +   header, p_flags. */
> +#define PF_R		0x4
> +#define PF_W		0x2
> +#define PF_X		0x1
> +
> +typedef struct elf32_phdr {
> +  Elf32_Word	p_type;
> +  Elf32_Off	p_offset;
> +  Elf32_Addr	p_vaddr;
> +  Elf32_Addr	p_paddr;
> +  Elf32_Word	p_filesz;
> +  Elf32_Word	p_memsz;
> +  Elf32_Word	p_flags;
> +  Elf32_Word	p_align;
> +} Elf32_Phdr;
> +
> +typedef struct elf64_phdr {
> +  Elf64_Word p_type;
> +  Elf64_Word p_flags;
> +  Elf64_Off p_offset;		/* Segment file offset */
> +  Elf64_Addr p_vaddr;		/* Segment virtual address */
> +  Elf64_Addr p_paddr;		/* Segment physical address */
> +  Elf64_Xword p_filesz;		/* Segment size in file */
> +  Elf64_Xword p_memsz;		/* Segment size in memory */
> +  Elf64_Xword p_align;		/* Segment alignment, file & memory */
> +} Elf64_Phdr;
> +
> +/* sh_type */
> +#define SHT_NULL	0
> +#define SHT_PROGBITS	1
> +#define SHT_SYMTAB	2
> +#define SHT_STRTAB	3
> +#define SHT_RELA	4
> +#define SHT_HASH	5
> +#define SHT_DYNAMIC	6
> +#define SHT_NOTE	7
> +#define SHT_NOBITS	8
> +#define SHT_REL		9
> +#define SHT_SHLIB	10
> +#define SHT_DYNSYM	11
> +#define SHT_NUM		12
> +#define SHT_LOPROC	0x70000000
> +#define SHT_HIPROC	0x7fffffff
> +#define SHT_LOUSER	0x80000000
> +#define SHT_HIUSER	0xffffffff
> +
> +/* sh_flags */
> +#define SHF_WRITE		0x1
> +#define SHF_ALLOC		0x2
> +#define SHF_EXECINSTR		0x4
> +#define SHF_RELA_LIVEPATCH	0x00100000
> +#define SHF_RO_AFTER_INIT	0x00200000
> +#define SHF_MASKPROC		0xf0000000
> +
> +/* special section indexes */
> +#define SHN_UNDEF	0
> +#define SHN_LORESERVE	0xff00
> +#define SHN_LOPROC	0xff00
> +#define SHN_HIPROC	0xff1f
> +#define SHN_LIVEPATCH	0xff20
> +#define SHN_ABS		0xfff1
> +#define SHN_COMMON	0xfff2
> +#define SHN_HIRESERVE	0xffff
> + 
> +typedef struct elf32_shdr {
> +  Elf32_Word	sh_name;
> +  Elf32_Word	sh_type;
> +  Elf32_Word	sh_flags;
> +  Elf32_Addr	sh_addr;
> +  Elf32_Off	sh_offset;
> +  Elf32_Word	sh_size;
> +  Elf32_Word	sh_link;
> +  Elf32_Word	sh_info;
> +  Elf32_Word	sh_addralign;
> +  Elf32_Word	sh_entsize;
> +} Elf32_Shdr;
> +
> +typedef struct elf64_shdr {
> +  Elf64_Word sh_name;		/* Section name, index in string tbl */
> +  Elf64_Word sh_type;		/* Type of section */
> +  Elf64_Xword sh_flags;		/* Miscellaneous section attributes */
> +  Elf64_Addr sh_addr;		/* Section virtual addr at execution */
> +  Elf64_Off sh_offset;		/* Section file offset */
> +  Elf64_Xword sh_size;		/* Size of section in bytes */
> +  Elf64_Word sh_link;		/* Index of another section */
> +  Elf64_Word sh_info;		/* Additional section information */
> +  Elf64_Xword sh_addralign;	/* Section alignment */
> +  Elf64_Xword sh_entsize;	/* Entry size if section holds table */
> +} Elf64_Shdr;
> +
> +#define	EI_MAG0		0		/* e_ident[] indexes */
> +#define	EI_MAG1		1
> +#define	EI_MAG2		2
> +#define	EI_MAG3		3
> +#define	EI_CLASS	4
> +#define	EI_DATA		5
> +#define	EI_VERSION	6
> +#define	EI_OSABI	7
> +#define	EI_PAD		8
> +
> +#define	ELFMAG0		0x7f		/* EI_MAG */
> +#define	ELFMAG1		'E'
> +#define	ELFMAG2		'L'
> +#define	ELFMAG3		'F'
> +#define	ELFMAG		"\177ELF"
> +#define	SELFMAG		4
> +
> +#define	ELFCLASSNONE	0		/* EI_CLASS */
> +#define	ELFCLASS32	1
> +#define	ELFCLASS64	2
> +#define	ELFCLASSNUM	3
> +
> +#define ELFDATANONE	0		/* e_ident[EI_DATA] */
> +#define ELFDATA2LSB	1
> +#define ELFDATA2MSB	2
> +
> +#define EV_NONE		0		/* e_version, EI_VERSION */
> +#define EV_CURRENT	1
> +#define EV_NUM		2
> +
> +#define ELFOSABI_NONE	0
> +#define ELFOSABI_LINUX	3
> +
> +#ifndef ELF_OSABI
> +#define ELF_OSABI ELFOSABI_NONE
> +#endif
> +
> +/*
> + * Notes used in ET_CORE. Architectures export some of the arch register sets
> + * using the corresponding note types via the PTRACE_GETREGSET and
> + * PTRACE_SETREGSET requests.
> + * The note name for these types is "LINUX", except NT_PRFPREG that is named
> + * "CORE".
> + */
> +#define NT_PRSTATUS	1
> +#define NT_PRFPREG	2
> +#define NT_PRPSINFO	3
> +#define NT_TASKSTRUCT	4
> +#define NT_AUXV		6
> +/*
> + * Note to userspace developers: size of NT_SIGINFO note may increase
> + * in the future to accomodate more fields, don't assume it is fixed!
> + */
> +#define NT_SIGINFO      0x53494749
> +#define NT_FILE         0x46494c45
> +#define NT_PRXFPREG     0x46e62b7f      /* copied from gdb5.1/include/elf/common.h */
> +#define NT_PPC_VMX	0x100		/* PowerPC Altivec/VMX registers */
> +#define NT_PPC_SPE	0x101		/* PowerPC SPE/EVR registers */
> +#define NT_PPC_VSX	0x102		/* PowerPC VSX registers */
> +#define NT_PPC_TAR	0x103		/* Target Address Register */
> +#define NT_PPC_PPR	0x104		/* Program Priority Register */
> +#define NT_PPC_DSCR	0x105		/* Data Stream Control Register */
> +#define NT_PPC_EBB	0x106		/* Event Based Branch Registers */
> +#define NT_PPC_PMU	0x107		/* Performance Monitor Registers */
> +#define NT_PPC_TM_CGPR	0x108		/* TM checkpointed GPR Registers */
> +#define NT_PPC_TM_CFPR	0x109		/* TM checkpointed FPR Registers */
> +#define NT_PPC_TM_CVMX	0x10a		/* TM checkpointed VMX Registers */
> +#define NT_PPC_TM_CVSX	0x10b		/* TM checkpointed VSX Registers */
> +#define NT_PPC_TM_SPR	0x10c		/* TM Special Purpose Registers */
> +#define NT_PPC_TM_CTAR	0x10d		/* TM checkpointed Target Address Register */
> +#define NT_PPC_TM_CPPR	0x10e		/* TM checkpointed Program Priority Register */
> +#define NT_PPC_TM_CDSCR	0x10f		/* TM checkpointed Data Stream Control Register */
> +#define NT_PPC_PKEY	0x110		/* Memory Protection Keys registers */
> +#define NT_PPC_DEXCR	0x111		/* PowerPC DEXCR registers */
> +#define NT_PPC_HASHKEYR	0x112		/* PowerPC HASHKEYR register */
> +#define NT_386_TLS	0x200		/* i386 TLS slots (struct user_desc) */
> +#define NT_386_IOPERM	0x201		/* x86 io permission bitmap (1=deny) */
> +#define NT_X86_XSTATE	0x202		/* x86 extended state using xsave */
> +/* Old binutils treats 0x203 as a CET state */
> +#define NT_X86_SHSTK	0x204		/* x86 SHSTK state */
> +#define NT_X86_XSAVE_LAYOUT	0x205	/* XSAVE layout description */
> +#define NT_S390_HIGH_GPRS	0x300	/* s390 upper register halves */
> +#define NT_S390_TIMER	0x301		/* s390 timer register */
> +#define NT_S390_TODCMP	0x302		/* s390 TOD clock comparator register */
> +#define NT_S390_TODPREG	0x303		/* s390 TOD programmable register */
> +#define NT_S390_CTRS	0x304		/* s390 control registers */
> +#define NT_S390_PREFIX	0x305		/* s390 prefix register */
> +#define NT_S390_LAST_BREAK	0x306	/* s390 breaking event address */
> +#define NT_S390_SYSTEM_CALL	0x307	/* s390 system call restart data */
> +#define NT_S390_TDB	0x308		/* s390 transaction diagnostic block */
> +#define NT_S390_VXRS_LOW	0x309	/* s390 vector registers 0-15 upper half */
> +#define NT_S390_VXRS_HIGH	0x30a	/* s390 vector registers 16-31 */
> +#define NT_S390_GS_CB	0x30b		/* s390 guarded storage registers */
> +#define NT_S390_GS_BC	0x30c		/* s390 guarded storage broadcast control block */
> +#define NT_S390_RI_CB	0x30d		/* s390 runtime instrumentation */
> +#define NT_S390_PV_CPU_DATA	0x30e	/* s390 protvirt cpu dump data */
> +#define NT_ARM_VFP	0x400		/* ARM VFP/NEON registers */
> +#define NT_ARM_TLS	0x401		/* ARM TLS register */
> +#define NT_ARM_HW_BREAK	0x402		/* ARM hardware breakpoint registers */
> +#define NT_ARM_HW_WATCH	0x403		/* ARM hardware watchpoint registers */
> +#define NT_ARM_SYSTEM_CALL	0x404	/* ARM system call number */
> +#define NT_ARM_SVE	0x405		/* ARM Scalable Vector Extension registers */
> +#define NT_ARM_PAC_MASK		0x406	/* ARM pointer authentication code masks */
> +#define NT_ARM_PACA_KEYS	0x407	/* ARM pointer authentication address keys */
> +#define NT_ARM_PACG_KEYS	0x408	/* ARM pointer authentication generic key */
> +#define NT_ARM_TAGGED_ADDR_CTRL	0x409	/* arm64 tagged address control (prctl()) */
> +#define NT_ARM_PAC_ENABLED_KEYS	0x40a	/* arm64 ptr auth enabled keys (prctl()) */
> +#define NT_ARM_SSVE	0x40b		/* ARM Streaming SVE registers */
> +#define NT_ARM_ZA	0x40c		/* ARM SME ZA registers */
> +#define NT_ARM_ZT	0x40d		/* ARM SME ZT registers */
> +#define NT_ARM_FPMR	0x40e		/* ARM floating point mode register */
> +#define NT_ARM_POE	0x40f		/* ARM POE registers */
> +#define NT_ARM_GCS	0x410		/* ARM GCS state */
> +#define NT_ARC_V2	0x600		/* ARCv2 accumulator/extra registers */
> +#define NT_VMCOREDD	0x700		/* Vmcore Device Dump Note */
> +#define NT_MIPS_DSP	0x800		/* MIPS DSP ASE registers */
> +#define NT_MIPS_FP_MODE	0x801		/* MIPS floating-point mode */
> +#define NT_MIPS_MSA	0x802		/* MIPS SIMD registers */
> +#define NT_RISCV_CSR	0x900		/* RISC-V Control and Status Registers */
> +#define NT_RISCV_VECTOR	0x901		/* RISC-V vector registers */
> +#define NT_RISCV_TAGGED_ADDR_CTRL 0x902	/* RISC-V tagged address control (prctl()) */
> +#define NT_LOONGARCH_CPUCFG	0xa00	/* LoongArch CPU config registers */
> +#define NT_LOONGARCH_CSR	0xa01	/* LoongArch control and status registers */
> +#define NT_LOONGARCH_LSX	0xa02	/* LoongArch Loongson SIMD Extension registers */
> +#define NT_LOONGARCH_LASX	0xa03	/* LoongArch Loongson Advanced SIMD Extension registers */
> +#define NT_LOONGARCH_LBT	0xa04	/* LoongArch Loongson Binary Translation registers */
> +#define NT_LOONGARCH_HW_BREAK	0xa05   /* LoongArch hardware breakpoint registers */
> +#define NT_LOONGARCH_HW_WATCH	0xa06   /* LoongArch hardware watchpoint registers */
> +
> +/* Note types with note name "GNU" */
> +#define NT_GNU_PROPERTY_TYPE_0	5
> +
> +/* Note header in a PT_NOTE section */
> +typedef struct elf32_note {
> +  Elf32_Word	n_namesz;	/* Name size */
> +  Elf32_Word	n_descsz;	/* Content size */
> +  Elf32_Word	n_type;		/* Content type */
> +} Elf32_Nhdr;
> +
> +/* Note header in a PT_NOTE section */
> +typedef struct elf64_note {
> +  Elf64_Word n_namesz;	/* Name size */
> +  Elf64_Word n_descsz;	/* Content size */
> +  Elf64_Word n_type;	/* Content type */
> +} Elf64_Nhdr;
> +
> +/* .note.gnu.property types for EM_AARCH64: */
> +#define GNU_PROPERTY_AARCH64_FEATURE_1_AND	0xc0000000
> +
> +/* Bits for GNU_PROPERTY_AARCH64_FEATURE_1_BTI */
> +#define GNU_PROPERTY_AARCH64_FEATURE_1_BTI	(1U << 0)
> +
> +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 {
> +  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 {
> +  Elf32_Word    vda_name;
> +  Elf32_Word    vda_next;
> +} Elf32_Verdaux;
> +
> +typedef struct {
> +  Elf64_Word    vda_name;
> +  Elf64_Word    vda_next;
> +} Elf64_Verdaux;
> +
> +#endif /* _LINUX_ELF_H */
> 

-- 
Regards,
Vincenzo

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