diff options
Diffstat (limited to 'components/libc/libdl/dlelf.h')
| -rw-r--r-- | components/libc/libdl/dlelf.h | 115 |
1 files changed, 114 insertions, 1 deletions
diff --git a/components/libc/libdl/dlelf.h b/components/libc/libdl/dlelf.h index ad9e2cdade..540fe2c8aa 100644 --- a/components/libc/libdl/dlelf.h +++ b/components/libc/libdl/dlelf.h @@ -6,6 +6,7 @@ * Change Logs: * Date Author Notes * 2018/08/29 Bernard first version + * 2021/04/23 chunyexixiaoyu distinguish 32-bit and 64-bit */ #ifndef DL_ELF_H__ @@ -19,6 +20,21 @@ typedef rt_int32_t Elf32_Sword; /* Signed large integer */ typedef rt_uint32_t Elf32_Word; /* Unsigned large integer */ typedef rt_uint16_t Elf32_Half; /* Unsigned medium integer */ +typedef rt_uint64_t Elf64_Addr; +typedef rt_uint16_t Elf64_Half; +typedef rt_int16_t Elf64_SHalf; +typedef rt_uint64_t Elf64_Off; +typedef rt_int32_t Elf64_Sword; +typedef rt_uint32_t Elf64_Word; +typedef rt_uint64_t Elf64_Xword; +typedef rt_int64_t Elf64_Sxword; +typedef uint16_t Elf64_Section; + + + + + + /* e_ident[] magic number */ #define ELFMAG0 0x7f /* e_ident[EI_MAG0] */ #define ELFMAG1 'E' /* e_ident[EI_MAG1] */ @@ -75,6 +91,25 @@ typedef struct elfhdr header string table" entry offset */ } Elf32_Ehdr; + +typedef struct elf64_hdr { + unsigned char e_ident[EI_NIDENT]; /* ELF Identification */ + Elf64_Half e_type; /* object file type */ + Elf64_Half e_machine; /* machine */ + Elf64_Word e_version; /* object file version */ + Elf64_Addr e_entry; /* virtual entry point */ + Elf64_Off e_phoff; /* program header table offset */ + Elf64_Off e_shoff; /* section header table offset */ + Elf64_Word e_flags; /* processor-specific flags */ + Elf64_Half e_ehsize; /* ELF header size */ + Elf64_Half e_phentsize; /* program header entry size */ + Elf64_Half e_phnum; /* number of program header entries */ + Elf64_Half e_shentsize; /* section header entry size */ + Elf64_Half e_shnum; /* number of section header entries */ + Elf64_Half e_shstrndx; /* section header table's "section + header string table" entry offset */ +} Elf64_Ehdr; + /* Section Header */ typedef struct { @@ -91,6 +126,21 @@ typedef struct Elf32_Word sh_entsize; /* section entry size */ } Elf32_Shdr; +typedef struct +{ + Elf64_Word sh_name; /* Section name (string tbl index) */ + Elf64_Word sh_type; /* Section type */ + Elf64_Xword sh_flags; /* Section flags */ + Elf64_Addr sh_addr; /* Section virtual addr at execution */ + Elf64_Off sh_offset; /* Section file offset */ + Elf64_Xword sh_size; /* Section size in bytes */ + Elf64_Word sh_link; /* Link to 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; + + /* Section names */ #define ELF_BSS ".bss" /* uninitialized data */ #define ELF_DATA ".data" /* initialized data */ @@ -126,6 +176,19 @@ typedef struct elf32_sym Elf32_Half st_shndx; /* section header index */ } Elf32_Sym; + +typedef struct +{ + Elf64_Word st_name; /* Symbol name (string tbl index) */ + unsigned char st_info; /* Symbol type and binding */ + unsigned char st_other; /* Symbol visibility */ + Elf64_Section st_shndx; /* Section index */ + Elf64_Addr st_value; /* Symbol value */ + Elf64_Xword st_size; /* Symbol size */ +} Elf64_Sym; + + + #define STB_LOCAL 0 /* BIND */ #define STB_GLOBAL 1 #define STB_WEAK 2 @@ -160,6 +223,12 @@ typedef struct Elf32_Word r_info; /* symbol table index and type */ } Elf32_Rel; +typedef struct +{ + Elf64_Addr r_offset; /* Address */ + Elf64_Xword r_info; /* Relocation type and symbol index */ +} Elf64_Rel; + /* Relocation entry with explicit addend */ typedef struct { @@ -168,11 +237,24 @@ typedef struct Elf32_Sword r_addend; } Elf32_Rela; +typedef struct +{ + Elf64_Addr r_offset; /* Address */ + Elf64_Xword r_info; /* Relocation type and symbol index */ + Elf64_Sxword r_addend; /* Addend */ +} Elf64_Rela; + /* Extract relocation info - r_info */ #define ELF32_R_SYM(i) ((i) >> 8) #define ELF32_R_TYPE(i) ((unsigned char) (i)) #define ELF32_R_INFO(s,t) (((s) << 8) + (unsigned char)(t)) + + +#define ELF64_R_SYM(i) ((i) >> 32) +#define ELF64_R_TYPE(i) ((i) & 0xffffffff) +#define ELF64_R_INFO(sym,type) ((((Elf64_Xword) (sym)) << 32) + (type)) + /* * Relocation type for arm */ @@ -219,6 +301,23 @@ typedef struct Elf32_Word p_align; /* memory alignment */ } Elf32_Phdr; + +typedef struct +{ + Elf64_Word p_type; /* Segment type */ + Elf64_Word p_flags; /* Segment 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 */ +} Elf64_Phdr; + + + + + /* p_type */ #define PT_NULL 0 #define PT_LOAD 1 @@ -273,13 +372,27 @@ typedef struct #define IS_AX(s) ((s.sh_flags & SHF_ALLOC) && (s.sh_flags & SHF_EXECINSTR)) #define IS_AW(s) ((s.sh_flags & SHF_ALLOC) && (s.sh_flags & SHF_WRITE)) +#if (defined(__arm__) || defined(__i386__) || (__riscv_xlen == 32)) #define elf_module ((Elf32_Ehdr *)module_ptr) #define shdr ((Elf32_Shdr *)((rt_uint8_t *)module_ptr + elf_module->e_shoff)) #define phdr ((Elf32_Phdr *)((rt_uint8_t *)module_ptr + elf_module->e_phoff)) +typedef Elf32_Sym Elf_Sym; +typedef Elf32_Rel Elf_Rel; +typedef Elf32_Addr Elf_Addr; +#elif (defined(__aarch64__) || defined(__x86_64__) || (__riscv_xlen == 64)) +#define elf_module ((Elf64_Ehdr *)module_ptr) +#define shdr ((Elf64_Shdr *)((rt_uint8_t *)module_ptr + elf_module->e_shoff)) +#define phdr ((Elf64_Phdr *)((rt_uint8_t *)module_ptr + elf_module->e_phoff)) + +typedef Elf64_Sym Elf_Sym; +typedef Elf64_Rela Elf_Rel; +typedef Elf64_Addr Elf_Addr; +#endif +int dlmodule_relocate(struct rt_dlmodule *module, Elf_Rel *rel, Elf_Addr sym_val); rt_err_t dlmodule_load_shared_object(struct rt_dlmodule* module, void *module_ptr); rt_err_t dlmodule_load_relocated_object(struct rt_dlmodule* module, void *module_ptr); -int dlmodule_relocate(struct rt_dlmodule *module, Elf32_Rel *rel, Elf32_Addr sym_val); + #endif |