diff options
Diffstat (limited to 'utils/sbtools/elf.h')
| -rw-r--r-- | utils/sbtools/elf.h | 141 |
1 files changed, 9 insertions, 132 deletions
diff --git a/utils/sbtools/elf.h b/utils/sbtools/elf.h index d2bf210..b145bff 100644 --- a/utils/sbtools/elf.h +++ b/utils/sbtools/elf.h @@ -6,136 +6,6 @@ #include <unistd.h> /** - * Definitions - * taken from elf.h linux header - * based on ELF specification - * based on ARM ELF specification - */ -typedef uint16_t Elf32_Half; - -typedef uint32_t Elf32_Word; -typedef int32_t Elf32_Sword; -typedef uint32_t Elf32_Addr; -typedef uint32_t Elf32_Off; -typedef uint16_t Elf32_Section; - -#define EI_NIDENT 16 - -typedef struct -{ - unsigned char e_ident[EI_NIDENT]; /* Magic number and other info */ - Elf32_Half e_type; /* Object file type */ - Elf32_Half e_machine; /* Architecture */ - Elf32_Word e_version; /* Object file version */ - Elf32_Addr e_entry; /* Entry point virtual address */ - Elf32_Off e_phoff; /* Program header table file offset */ - Elf32_Off e_shoff; /* Section header table file offset */ - Elf32_Word e_flags; /* Processor-specific flags */ - Elf32_Half e_ehsize; /* ELF header size in bytes */ - Elf32_Half e_phentsize; /* Program header table entry size */ - Elf32_Half e_phnum; /* Program header table entry count */ - Elf32_Half e_shentsize; /* Section header table entry size */ - Elf32_Half e_shnum; /* Section header table entry count */ - Elf32_Half e_shstrndx; /* Section header string table index */ -}Elf32_Ehdr; - -#define EI_MAG0 0 /* File identification byte 0 index */ -#define ELFMAG0 0x7f /* Magic number byte 0 */ - -#define EI_MAG1 1 /* File identification byte 1 index */ -#define ELFMAG1 'E' /* Magic number byte 1 */ - -#define EI_MAG2 2 /* File identification byte 2 index */ -#define ELFMAG2 'L' /* Magic number byte 2 */ - -#define EI_MAG3 3 /* File identification byte 3 index */ -#define ELFMAG3 'F' /* Magic number byte 3 */ - -#define EI_CLASS 4 /* File class byte index */ -#define ELFCLASS32 1 /* 32-bit objects */ - -#define EI_DATA 5 /* Data encoding byte index */ -#define ELFDATA2LSB 1 /* 2's complement, little endian */ - -#define EI_VERSION 6 /* File version byte index, Value must be EV_CURRENT */ - -#define EI_OSABI 7 /* OS ABI identification */ -#define ELFOSABI_NONE 0 /* UNIX System V ABI */ -#define ELFOSABI_ARM_AEABI 64 /* ARM EABI */ -#define ELFOSABI_ARM 97 /* ARM */ - -#define EI_ABIVERSION 8 /* ABI version */ - -#define EI_PAD 9 /* Byte index of padding bytes */ - -#define ET_EXEC 2 /* Executable file */ - -#define EM_ARM 40 /* ARM */ - -#define EV_CURRENT 1 /* Current version */ - -#define EF_ARM_HASENTRY 0x00000002 - -#define SHN_UNDEF 0 /* Undefined section */ - -typedef struct -{ - Elf32_Word sh_name; /* Section name (string tbl index) */ - Elf32_Word sh_type; /* Section type */ - Elf32_Word sh_flags; /* Section flags */ - Elf32_Addr sh_addr; /* Section virtual addr at execution */ - Elf32_Off sh_offset; /* Section file offset */ - Elf32_Word sh_size; /* Section size in bytes */ - Elf32_Word sh_link; /* Link to another section */ - Elf32_Word sh_info; /* Additional section information */ - Elf32_Word sh_addralign; /* Section alignment */ - Elf32_Word sh_entsize; /* Entry size if section holds table */ -}Elf32_Shdr; - -#define SHT_NULL 0 /* Section header table entry unused */ -#define SHT_PROGBITS 1 /* Program data */ -#define SHT_SYMTAB 2 /* Symbol table */ -#define SHT_STRTAB 3 /* String table */ -#define SHT_RELA 4 /* Relocation entries with addends */ -#define SHT_HASH 5 /* Symbol hash table */ -#define SHT_DYNAMIC 6 /* Dynamic linking information */ -#define SHT_NOTE 7 /* Notes */ -#define SHT_NOBITS 8 /* Program space with no data (bss) */ -#define SHT_REL 9 /* Relocation entries, no addends */ -#define SHT_SHLIB 10 /* Reserved */ -#define SHT_DYNSYM 11 /* Dynamic linker symbol table */ -#define SHT_INIT_ARRAY 14 /* Array of constructors */ -#define SHT_FINI_ARRAY 15 /* Array of destructors */ -#define SHT_PREINIT_ARRAY 16 /* Array of pre-constructors */ -#define SHT_GROUP 17 /* Section group */ -#define SHT_SYMTAB_SHNDX 18 /* Extended section indeces */ -#define SHT_NUM 19 /* Number of defined types. */ - -#define SHF_WRITE (1 << 0) /* Writable */ -#define SHF_ALLOC (1 << 1) /* Occupies memory during execution */ -#define SHF_EXECINSTR (1 << 2) /* Executable */ -#define SHF_MERGE (1 << 4) /* Might be merged */ -#define SHF_STRINGS (1 << 5) /* Contains nul-terminated strings */ - -typedef struct -{ - Elf32_Word p_type; /* Segment type */ - Elf32_Off p_offset; /* Segment file offset */ - Elf32_Addr p_vaddr; /* Segment virtual address */ - Elf32_Addr p_paddr; /* Segment physical address */ - Elf32_Word p_filesz; /* Segment size in file */ - Elf32_Word p_memsz; /* Segment size in memory */ - Elf32_Word p_flags; /* Segment flags */ - Elf32_Word p_align; /* Segment alignment */ -}Elf32_Phdr; - -#define PT_LOAD 1 /* Loadable program segment */ - -#define PF_X (1 << 0) /* Segment is executable */ -#define PF_W (1 << 1) /* Segment is writable */ -#define PF_R (1 << 2) /* Segment is readable */ - -/** * API */ enum elf_section_type_t @@ -154,7 +24,7 @@ struct elf_section_t uint32_t pattern; /* </union> */ struct elf_section_t *next; - /* Internal to elf_output */ + /* Internal to elf_write_file */ uint32_t offset; }; @@ -166,14 +36,21 @@ struct elf_params_t struct elf_section_t *last_section; }; +typedef bool (*elf_read_fn_t)(void *user, uint32_t addr, void *buf, size_t count); +/* write function manages it's own error state */ typedef void (*elf_write_fn_t)(void *user, uint32_t addr, const void *buf, size_t count); +typedef void (*elf_printf_fn_t)(void *user, bool error, const char *fmt, ...); void elf_init(struct elf_params_t *params); void elf_add_load_section(struct elf_params_t *params, uint32_t load_addr, uint32_t size, const void *section); void elf_add_fill_section(struct elf_params_t *params, uint32_t fill_addr, uint32_t size, uint32_t pattern); -void elf_output(struct elf_params_t *params, elf_write_fn_t write, void *user); +void elf_write_file(struct elf_params_t *params, elf_write_fn_t write, void *user); +bool elf_read_file(struct elf_params_t *params, elf_read_fn_t read, elf_printf_fn_t printf, + void *user); bool elf_is_empty(struct elf_params_t *params); void elf_set_start_addr(struct elf_params_t *params, uint32_t addr); +bool elf_get_start_addr(struct elf_params_t *params, uint32_t *addr); +int elf_get_nr_sections(struct elf_params_t *params); void elf_release(struct elf_params_t *params); |