6b202f4e3d
to contain headers shared by kernel and userland (mainly libroot). * Moved quite a few private kernel headers to the new location. Split several kernel headers into a shared part and one that is still kernel private. Adjusted all affected Jamfiles and source in the standard x86 build accordingly. The build for other architectures and for test code may be broken. * Quite a bit of userland code still includes private kernel headers. Mostly those are <util/*> headers. The ones that aren't strictly kernel-only should be moved to some other place (maybe headers/private/shared/util). git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25486 a95241bf-73f2-0310-859d-f6bbb57e9c96
313 lines
5.6 KiB
C
313 lines
5.6 KiB
C
/*
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* Copyright 2002-2006, Haiku Inc. All Rights Reserved.
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* Distributed under the terms of the MIT license.
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*
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* Copyright 2001, Travis Geiselbrecht. All rights reserved.
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* Distributed under the terms of the NewOS License.
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*/
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#ifndef _ELF32_H
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#define _ELF32_H
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#include <SupportDefs.h>
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#include <ByteOrder.h>
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#include <arch_elf.h>
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typedef uint32 Elf32_Addr;
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typedef uint16 Elf32_Half;
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typedef uint32 Elf32_Off;
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typedef int32 Elf32_Sword;
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typedef uint32 Elf32_Word;
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/*** ELF header ***/
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#define EI_NIDENT 16
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struct Elf32_Ehdr {
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uint8 e_ident[EI_NIDENT];
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Elf32_Half e_type;
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Elf32_Half e_machine;
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Elf32_Word e_version;
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Elf32_Addr e_entry;
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Elf32_Off e_phoff;
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Elf32_Off e_shoff;
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Elf32_Word e_flags;
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Elf32_Half e_ehsize;
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Elf32_Half e_phentsize;
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Elf32_Half e_phnum;
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Elf32_Half e_shentsize;
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Elf32_Half e_shnum;
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Elf32_Half e_shstrndx;
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#ifdef __cplusplus
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bool IsHostEndian() const;
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#endif
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};
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#define ELF_MAGIC "\x7f""ELF"
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// e_ident[] indices
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#define EI_MAG0 0
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#define EI_MAG1 1
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#define EI_MAG2 2
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#define EI_MAG3 3
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#define EI_CLASS 4
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#define EI_DATA 5
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#define EI_VERSION 6
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#define EI_PAD 7
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// architecture class (EI_CLASS)
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#define ELFCLASS32 1
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#define ELFCLASS64 2
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// endian (EI_DATA)
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#define ELFDATA2LSB 1 // little endian
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#define ELFDATA2MSB 2 // big endian
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/*** section header ***/
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struct Elf32_Shdr {
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Elf32_Word sh_name;
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Elf32_Word sh_type;
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Elf32_Word sh_flags;
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Elf32_Addr sh_addr;
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Elf32_Off sh_offset;
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Elf32_Word sh_size;
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Elf32_Word sh_link;
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Elf32_Word sh_info;
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Elf32_Word sh_addralign;
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Elf32_Word sh_entsize;
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};
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// special section indices
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#define SHN_UNDEF 0
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#define SHN_LORESERVE 0xff00
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#define SHN_LOPROC 0xff00
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#define SHN_HIPROC 0xff1f
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#define SHN_ABS 0xfff1
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#define SHN_COMMON 0xfff2
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#define SHN_HIRESERVE 0xffff
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// section header type
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#define SHT_NULL 0
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#define SHT_PROGBITS 1
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#define SHT_SYMTAB 2
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#define SHT_STRTAB 3
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#define SHT_RELA 4
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#define SHT_HASH 5
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#define SHT_DYNAMIC 6
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#define SHT_NOTE 7
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#define SHT_NOBITS 8
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#define SHT_REL 9
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#define SHT_SHLIB 10
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#define SHT_DYNSYM 11
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#define SHT_LOPROC 0x70000000
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#define SHT_HIPROC 0x7fffffff
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#define SHT_LOUSER 0x80000000
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#define SHT_HIUSER 0xffffffff
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// section header flags
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#define SHF_WRITE 1
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#define SHF_ALLOC 2
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#define SHF_EXECINSTR 4
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#define SHF_MASKPROC 0xf0000000
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/*** program header ***/
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struct Elf32_Phdr {
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Elf32_Word p_type;
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Elf32_Off p_offset; /* offset from the beginning of the file of the segment */
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Elf32_Addr p_vaddr; /* virtual address for the segment in memory */
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Elf32_Addr p_paddr;
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Elf32_Word p_filesz; /* the size of the segment in the file */
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Elf32_Word p_memsz; /* the size of the segment in memory */
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Elf32_Word p_flags;
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Elf32_Word p_align;
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#ifdef __cplusplus
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bool IsReadWrite() const;
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bool IsExecutable() const;
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#endif
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};
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// program header segment types
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#define PT_NULL 0
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#define PT_LOAD 1
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#define PT_DYNAMIC 2
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#define PT_INTERP 3
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#define PT_NOTE 4
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#define PT_SHLIB 5
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#define PT_PHDR 6
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#define PT_LOPROC 0x70000000
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#define PT_HIPROC 0x7fffffff
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// program header segment flags
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#define PF_EXECUTE 0x1
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#define PF_WRITE 0x2
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#define PF_READ 0x4
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#define PF_PROTECTION_MASK (PF_EXECUTE | PF_WRITE | PF_READ)
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#define PF_MASKPROC 0xf0000000
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struct Elf32_Sym {
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Elf32_Word st_name;
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Elf32_Addr st_value;
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Elf32_Word st_size;
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uint8 st_info;
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uint8 st_other;
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Elf32_Half st_shndx;
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#ifdef __cplusplus
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uint8 Bind() const;
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uint8 Type() const;
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#endif
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};
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#define ELF32_ST_BIND(i) ((i) >> 4)
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#define ELF32_ST_TYPE(i) ((i) & 0xf)
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#define ELF32_ST_INFO(b, t) (((b) << 4) + ((t) & 0xf))
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#define STT_NOTYPE 0
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#define STT_OBJECT 1
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#define STT_FUNC 2
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#define STT_SECTION 3
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#define STT_FILE 4
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#define STT_LOPROC 13
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#define STT_HIPROC 15
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#define STB_LOCAL 0
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#define STB_GLOBAL 1
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#define STB_WEAK 2
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#define STB_LOPROC 13
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#define STB_HIPROC 15
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#define STN_UNDEF 0
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struct Elf32_Rel {
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Elf32_Addr r_offset;
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Elf32_Word r_info;
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#ifdef __cplusplus
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uint8 SymbolIndex() const;
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uint8 Type() const;
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#endif
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};
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#ifdef __cplusplus
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struct Elf32_Rela : public Elf32_Rel {
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#else
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struct Elf32_Rela {
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Elf32_Addr r_offset;
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Elf32_Word r_info;
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#endif
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Elf32_Sword r_addend;
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};
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#define ELF32_R_SYM(i) ((i) >> 8)
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#define ELF32_R_TYPE(i) ((unsigned char)(i))
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#define ELF32_R_INFO(s, t) (((s) << 8) + (unsigned char)(t))
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struct Elf32_Dyn {
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Elf32_Sword d_tag;
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union {
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Elf32_Word d_val;
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Elf32_Addr d_ptr;
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} d_un;
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};
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#define DT_NULL 0
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#define DT_NEEDED 1
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#define DT_PLTRELSZ 2
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#define DT_PLTGOT 3
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#define DT_HASH 4
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#define DT_STRTAB 5
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#define DT_SYMTAB 6
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#define DT_RELA 7
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#define DT_RELASZ 8
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#define DT_RELAENT 9
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#define DT_STRSZ 10
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#define DT_SYMENT 11
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#define DT_INIT 12
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#define DT_FINI 13
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#define DT_SONAME 14
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#define DT_RPATH 15
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#define DT_SYMBOLIC 16
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#define DT_REL 17
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#define DT_RELSZ 18
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#define DT_RELENT 19
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#define DT_PLTREL 20
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#define DT_DEBUG 21
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#define DT_TEXTREL 22
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#define DT_JMPREL 23
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#define DT_LOPROC 0x70000000
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#define DT_HIPROC 0x7fffffff
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/*** inline functions ***/
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#ifdef __cplusplus
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inline bool
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Elf32_Ehdr::IsHostEndian() const
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{
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#if B_HOST_IS_LENDIAN
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return e_ident[EI_DATA] == ELFDATA2LSB;
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#elif B_HOST_IS_BENDIAN
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return e_ident[EI_DATA] == ELFDATA2MSB;
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#endif
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}
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inline bool
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Elf32_Phdr::IsReadWrite() const
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{
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return !(~p_flags & (PF_READ | PF_WRITE));
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}
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inline bool
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Elf32_Phdr::IsExecutable() const
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{
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return (p_flags & PF_PROTECTION_MASK) == (PF_READ | PF_EXECUTE);
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}
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inline uint8
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Elf32_Sym::Bind() const
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{
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return ELF32_ST_BIND(st_info);
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}
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inline uint8
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Elf32_Sym::Type() const
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{
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return ELF32_ST_TYPE(st_info);
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}
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inline uint8
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Elf32_Rel::SymbolIndex() const
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{
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return ELF32_R_SYM(r_info);
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}
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inline uint8
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Elf32_Rel::Type() const
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{
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return ELF32_R_TYPE(r_info);
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}
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#endif /* __cplusplus */
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#endif /* _ELF32_H_ */
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