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/trunk/or1ksim/cpu/common/elf.h
0,0 → 1,432
#ifndef _LINUX_ELF_H
#define _LINUX_ELF_H
 
#include <asm/elf.h>
 
/* Load a short int from the following tables with big-endian formats */
#define ELF_SHORT_H(ps) ((((unsigned short)(ps) >> 8) & 0xff) |\
(((unsigned short)(ps) << 8) & 0xff00))
 
/* Load a long int from the following tables with big-endian formats */
#define ELF_LONG_H(ps) ((((unsigned long)(ps) >> 24) & 0xff) |\
(((unsigned long)(ps) >> 8) & 0xff00)|\
(((unsigned long)(ps) << 8) & 0xff0000)|\
(((unsigned long)(ps) << 24) & 0xff000000))
 
typedef unsigned long Elf32_Addr;
typedef unsigned short Elf32_Half;
typedef unsigned long Elf32_Off;
typedef long Elf32_Sword;
typedef unsigned long 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_LOPROC 0x70000000
#define PT_HIPROC 0x7fffffff
 
/* 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 5
#define ET_HIPROC 6
 
/* These constants define the various ELF target machines */
#define EM_NONE 0
#define EM_M32 1
#define EM_SPARC 2
#define EM_386 3
#define EM_68K 4
#define EM_88K 5
#define EM_486 6 /* Perhaps disused */
#define EM_860 7
 
#define EM_MIPS 8 /* MIPS R3000 (officially, big-endian only) */
 
#define EM_MIPS_RS4_BE 10 /* MIPS R4000 big-endian */
 
#define EM_SPARC64 11 /* SPARC v9 (not official) 64-bit */
 
#define EM_PARISC 15 /* HPPA */
 
#define EM_SPARC32PLUS 18 /* Sun's "v8plus" */
 
#define EM_PPC 20 /* PowerPC */
 
/*
* This is an interim value that we will use until the committee comes
* up with a final number.
*/
#define EM_ALPHA 0x9026
 
 
/* 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_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 ELF32_ST_BIND(x) ((x) >> 4)
#define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf)
 
/* Symbolic values for the entries in the auxiliary table
put on the initial stack */
#define AT_NULL 0 /* end of vector */
#define AT_IGNORE 1 /* entry should be ignored */
#define AT_EXECFD 2 /* file descriptor of program */
#define AT_PHDR 3 /* program headers for program */
#define AT_PHENT 4 /* size of program header entry */
#define AT_PHNUM 5 /* number of program headers */
#define AT_PAGESZ 6 /* system page size */
#define AT_BASE 7 /* base address of interpreter */
#define AT_FLAGS 8 /* flags */
#define AT_ENTRY 9 /* entry point of program */
#define AT_NOTELF 10 /* program is not ELF */
#define AT_UID 11 /* real uid */
#define AT_EUID 12 /* effective uid */
#define AT_GID 13 /* real gid */
#define AT_EGID 14 /* effective gid */
 
 
typedef struct dynamic{
Elf32_Sword d_tag;
union{
Elf32_Sword d_val;
Elf32_Addr d_ptr;
} d_un;
} Elf32_Dyn;
 
typedef struct {
unsigned long long d_tag; /* entry tag value */
union {
unsigned long long d_val;
unsigned long long 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 R_386_NONE 0
#define R_386_32 1
#define R_386_PC32 2
#define R_386_GOT32 3
#define R_386_PLT32 4
#define R_386_COPY 5
#define R_386_GLOB_DAT 6
#define R_386_JMP_SLOT 7
#define R_386_RELATIVE 8
#define R_386_GOTOFF 9
#define R_386_GOTPC 10
#define R_386_NUM 11
 
#define R_68K_NONE 0
#define R_68K_32 1
#define R_68K_16 2
#define R_68K_8 3
#define R_68K_PC32 4
#define R_68K_PC16 5
#define R_68K_PC8 6
#define R_68K_GOT32 7
#define R_68K_GOT16 8
#define R_68K_GOT8 9
#define R_68K_GOT32O 10
#define R_68K_GOT16O 11
#define R_68K_GOT8O 12
#define R_68K_PLT32 13
#define R_68K_PLT16 14
#define R_68K_PLT8 15
#define R_68K_PLT32O 16
#define R_68K_PLT16O 17
#define R_68K_PLT8O 18
#define R_68K_COPY 19
#define R_68K_GLOB_DAT 20
#define R_68K_JMP_SLOT 21
#define R_68K_RELATIVE 22
 
typedef struct elf32_rel {
Elf32_Addr r_offset;
Elf32_Word r_info;
} Elf32_Rel;
 
typedef struct elf64_rel {
unsigned long long r_offset; /* Location at which to apply the action */
unsigned long long 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 {
unsigned long long r_offset; /* Location at which to apply the action */
unsigned long long r_info; /* index and type of relocation */
unsigned long long 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 {
unsigned int st_name; /* Symbol name, index in string tbl */
unsigned char st_info; /* Type and binding attributes */
unsigned char st_other; /* No defined meaning, 0 */
unsigned short st_shndx; /* Associated section index */
unsigned long long st_value; /* Value of the symbol */
unsigned long long 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[16]; /* ELF "magic number" */
short int e_type;
short unsigned int e_machine;
int e_version;
unsigned long long e_entry; /* Entry point virtual address */
unsigned long long e_phoff; /* Program header table file offset */
unsigned long long e_shoff; /* Section header table file offset */
int e_flags;
short int e_ehsize;
short int e_phentsize;
short int e_phnum;
short int e_shentsize;
short int e_shnum;
short int 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 {
int p_type;
int p_flags;
unsigned long long p_offset; /* Segment file offset */
unsigned long long p_vaddr; /* Segment virtual address */
unsigned long long p_paddr; /* Segment physical address */
unsigned long long p_filesz; /* Segment size in file */
unsigned long long p_memsz; /* Segment size in memory */
unsigned long long 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_MASKPROC 0xf0000000
 
/* special section indexes */
#define SHN_UNDEF 0
#define SHN_LORESERVE 0xff00
#define SHN_LOPROC 0xff00
#define SHN_HIPROC 0xff1f
#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 {
unsigned int sh_name; /* Section name, index in string tbl */
unsigned int sh_type; /* Type of section */
unsigned long long sh_flags; /* Miscellaneous section attributes */
unsigned long long sh_addr; /* Section virtual addr at execution */
unsigned long long sh_offset; /* Section file offset */
unsigned long long sh_size; /* Size of section in bytes */
unsigned int sh_link; /* Index of another section */
unsigned int sh_info; /* Additional section information */
unsigned long long sh_addralign; /* Section alignment */
unsigned long long 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_PAD 7
 
#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
 
/* Notes used in ET_CORE */
#define NT_PRSTATUS 1
#define NT_PRFPREG 2
#define NT_PRPSINFO 3
#define NT_TASKSTRUCT 4
 
/* 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 */
/*
* For now we use the 32 bit version of the structure until we figure
* out whether we need anything better. Note - on the Alpha, "unsigned int"
* is only 32 bits.
*/
typedef struct elf64_note {
unsigned int n_namesz; /* Name size */
unsigned int n_descsz; /* Content size */
unsigned int n_type; /* Content type */
} Elf64_Nhdr;
 
#ifdef __mc68000__
#define ELF_START_MMAP 0xC0000000
#endif
#ifdef __i386__
#define ELF_START_MMAP 0x80000000
#endif
 
#if ELF_CLASS == ELFCLASS32
 
extern Elf32_Dyn _DYNAMIC [];
#define elfhdr elf32_hdr
#define elf_phdr elf32_phdr
#define elf_note elf32_note
 
#else
 
extern Elf64_Dyn _DYNAMIC [];
#define elfhdr elf64_hdr
#define elf_phdr elf64_phdr
#define elf_note elf64_note
 
#endif
 
 
#endif /* _LINUX_ELF_H */

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