rv_elf.h

#pragma once
#ifdef RISC_666_LINUX
#include <elf.h>
#else
#include <stdint.h>
typedef uint32_t Elf32_Addr;
typedef uint16_t Elf32_Half;
typedef uint32_t Elf32_Off;
typedef int32_t Elf32_Sword;
typedef uint32_t Elf32_Word;

/* 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		0x6474e550

#define PT_GNU_STACK	(PT_LOOS + 0x474e551)
/*
 * 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.
 *   http://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_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 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 ELF32_ST_BIND(val)		(((unsigned char) (val)) >> 4)
#define ELF32_ST_TYPE(val)		((val) & 0xf)
#define ELF32_ST_INFO(bind, type)	(((bind) << 4) + ((type) & 0xf))


typedef struct dynamic{
  Elf32_Sword d_tag;
  union{
    Elf32_Sword	d_val;
    Elf32_Addr	d_ptr;
  } d_un;
} Elf32_Dyn;

/* The following are used with relocations */
#define ELF32_R_SYM(x) ((x) >> 8)
#define ELF32_R_TYPE(x) ((x) & 0xff)

typedef struct elf32_rel {
  Elf32_Addr	r_offset;
  Elf32_Word	r_info;
} Elf32_Rel;

typedef struct elf32_rela{
  Elf32_Addr	r_offset;
  Elf32_Word	r_info;
  Elf32_Sword	r_addend;
} Elf32_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;

#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;

/* 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;

/* 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;

#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.
 */
#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_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 */
#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_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_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 */

/* 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;

#endif