diff --git a/headers/private/kernel/elf32.h b/headers/private/kernel/elf32.h index 8f7c7925c9..1c692b0589 100755 --- a/headers/private/kernel/elf32.h +++ b/headers/private/kernel/elf32.h @@ -5,122 +5,166 @@ #ifndef _ELF32_H #define _ELF32_H -#include + +#include +#include + #include + typedef uint32 Elf32_Addr; typedef uint16 Elf32_Half; typedef uint32 Elf32_Off; typedef int32 Elf32_Sword; typedef uint32 Elf32_Word; -#define ELF_MAGIC "\x7f""ELF" -#define EI_MAG0 0 -#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 EI_NIDENT 16 -#define ELFCLASS32 1 -#define ELFCLASS64 2 -#define ELFDATA2LSB 1 -#define ELFDATA2MSB 2 +/*** ELF header ***/ + +#define EI_NIDENT 16 struct Elf32_Ehdr { - unsigned char e_ident[EI_NIDENT]; - Elf32_Half e_type; - Elf32_Half e_machine; - Elf32_Word e_version; - Elf32_Addr e_entry; - 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; -} ; + uint8 e_ident[EI_NIDENT]; + Elf32_Half e_type; + Elf32_Half e_machine; + Elf32_Word e_version; + Elf32_Addr e_entry; + 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; + +#ifdef __cplusplus + bool IsHostEndian() const; +#endif +}; + +#define ELF_MAGIC "\x7f""ELF" + +// e_ident[] indices +#define EI_MAG0 0 +#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 + +// architecture class (EI_CLASS) +#define ELFCLASS32 1 +#define ELFCLASS64 2 +// endian (EI_DATA) +#define ELFDATA2LSB 1 // little endian +#define ELFDATA2MSB 2 // big endian + + +/*** section header ***/ 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_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; +}; -#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_LOPROC 0x70000000 -#define SHT_HIPROC 0x7fffffff -#define SHT_LOUSER 0x80000000 -#define SHT_HIUSER 0xffffffff +// special section indices +#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 -#define SHF_WRITE 1 +// section header 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_LOPROC 0x70000000 +#define SHT_HIPROC 0x7fffffff +#define SHT_LOUSER 0x80000000 +#define SHT_HIUSER 0xffffffff + +// section header flags +#define SHF_WRITE 1 +#define SHF_ALLOC 2 +#define SHF_EXECINSTR 4 + +#define SHF_MASKPROC 0xf0000000 + + +/*** program header ***/ struct Elf32_Phdr { - Elf32_Word p_type; - Elf32_Off p_offset; /* offset from the beginning of the file of the segment */ - Elf32_Addr p_vaddr; /* virtual address for the segment in memory */ - Elf32_Addr p_paddr; - Elf32_Word p_filesz; /* the size of the segment in the file */ - Elf32_Word p_memsz; /* the size of the segment in memory */ - Elf32_Word p_flags; - Elf32_Word p_align; -} ; + Elf32_Word p_type; + Elf32_Off p_offset; /* offset from the beginning of the file of the segment */ + Elf32_Addr p_vaddr; /* virtual address for the segment in memory */ + Elf32_Addr p_paddr; + Elf32_Word p_filesz; /* the size of the segment in the file */ + Elf32_Word p_memsz; /* the size of the segment in memory */ + Elf32_Word p_flags; + Elf32_Word p_align; + +#ifdef __cplusplus + bool IsReadWrite() const; + bool IsExecutable() const; +#endif +}; + +// program header segment types +#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 + +// program header segment flags +#define PF_EXECUTE 0x1 +#define PF_WRITE 0x2 +#define PF_READ 0x4 +#define PF_PROTECTION_MASK (PF_EXECUTE | PF_WRITE | PF_READ) -#define PF_X 0x1 -#define PF_W 0x2 -#define PF_R 0x4 #define PF_MASKPROC 0xf0000000 - -#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 - -#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 - 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_Word st_name; + Elf32_Addr st_value; + Elf32_Word st_size; + uint8 st_info; + uint8 st_other; + Elf32_Half st_shndx; + +#ifdef __cplusplus + uint8 Bind() const; + uint8 Type() const; +#endif }; #define ELF32_ST_BIND(i) ((i) >> 4) @@ -146,11 +190,20 @@ struct Elf32_Sym { struct Elf32_Rel { Elf32_Addr r_offset; Elf32_Word r_info; + +#ifdef __cplusplus + uint8 SymbolIndex() const; + uint8 Type() const; +#endif }; +#ifdef __cplusplus +struct Elf32_Rela : public Elf32_Rel { +#else struct Elf32_Rela { Elf32_Addr r_offset; Elf32_Word r_info; +#endif Elf32_Sword r_addend; }; @@ -166,31 +219,91 @@ struct Elf32_Dyn { } d_un; }; -#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 +#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 + + +/*** inline functions ***/ + +#ifdef __cplusplus + +inline bool +Elf32_Ehdr::IsHostEndian() const +{ +#if B_HOST_IS_LENDIAN + return e_ident[EI_DATA] == ELFDATA2LSB; +#elif B_HOST_IS_BENDIAN + return e_ident[EI_DATA] == ELFDATA2MSB; #endif +} + + +inline bool +Elf32_Phdr::IsReadWrite() const +{ + return (p_flags & PF_PROTECTION_MASK) == (PF_READ | PF_WRITE); +} + + +inline bool +Elf32_Phdr::IsExecutable() const +{ + return (p_flags & PF_PROTECTION_MASK) == (PF_READ | PF_EXECUTE); +} + + +inline uint8 +Elf32_Sym::Bind() const +{ + return ELF32_ST_BIND(st_info); +} + + +inline uint8 +Elf32_Sym::Type() const +{ + return ELF32_ST_TYPE(st_info); +} + + +inline uint8 +Elf32_Rel::SymbolIndex() const +{ + return ELF32_R_SYM(r_info); +} + + +inline uint8 +Elf32_Rel::Type() const +{ + return ELF32_R_TYPE(r_info); +} + +#endif /* __cplusplus */ + +#endif /* _ELF32_H_ */