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sortix--sortix/sortix/elf.h
2013-12-17 14:30:23 +01:00

175 lines
4.2 KiB
C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011.
This file is part of Sortix.
Sortix is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version.
Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
Sortix. If not, see <http://www.gnu.org/licenses/>.
elf.h
Constructs processes from ELF files.
*******************************************************************************/
#ifndef SORTIX_ELF_H
#define SORTIX_ELF_H
namespace Sortix
{
class Process;
namespace ELF
{
struct Header
{
unsigned char magic[4];
unsigned char fileclass;
unsigned char dataencoding;
unsigned char version;
unsigned char osabi;
unsigned char abiversion;
unsigned char padding[7];
};
const unsigned char CLASSNONE = 0;
const unsigned char CLASS32 = 1;
const unsigned char CLASS64 = 2;
const unsigned char DATA2LSB = 1;
const unsigned char DATA2MSB = 2;
const unsigned char CURRENTVERSION = 1;
struct Header32 : public Header
{
uint16_t type;
uint16_t machine;
uint32_t version;
uint32_t entry;
uint32_t programheaderoffset;
uint32_t sectionheaderoffset;
uint32_t flags;
uint16_t elfheadersize;
uint16_t programheaderentrysize;
uint16_t numprogramheaderentries;
uint16_t sectionheaderentrysize;
uint16_t numsectionheaderentries;
uint16_t sectionheaderstringindex;
};
struct Header64 : public Header
{
uint16_t type;
uint16_t machine;
uint32_t version;
uint64_t entry;
uint64_t programheaderoffset;
uint64_t sectionheaderoffset;
uint32_t flags;
uint16_t elfheadersize;
uint16_t programheaderentrysize;
uint16_t numprogramheaderentries;
uint16_t sectionheaderentrysize;
uint16_t numsectionheaderentries;
uint16_t sectionheaderstringindex;
};
struct SectionHeader32
{
uint32_t name;
uint32_t type;
uint32_t flags;
uint32_t addr;
uint32_t offset;
uint32_t size;
uint32_t link;
uint32_t info;
uint32_t addralign;
uint32_t entsize;
};
struct SectionHeader64
{
uint32_t name;
uint32_t type;
uint64_t flags;
uint64_t addr;
uint64_t offset;
uint64_t size;
uint32_t link;
uint32_t info;
uint64_t addralign;
uint64_t entsize;
};
const uint32_t SHT_NULL = 0;
const uint32_t SHT_PROGBITS = 1;
const uint32_t SHT_SYMTAB = 2;
const uint32_t SHT_STRTAB = 3;
const uint32_t SHT_RELA = 4;
const uint32_t SHT_HASH = 5;
const uint32_t SHT_DYNAMIC = 6;
const uint32_t SHT_NOTE = 7;
const uint32_t SHT_NOBITS = 8;
const uint32_t SHT_REL = 9;
const uint32_t SHT_SHLIB = 10;
const uint32_t SHT_DYNSYM = 11;
const uint32_t SHT_LOPROC = 0x70000000;
const uint32_t SHT_HIPROC = 0x7fffffff;
const uint32_t SHT_LOUSER = 0x80000000;
const uint32_t SHT_HIUSER = 0xffffffff;
struct ProgramHeader32
{
uint32_t type;
uint32_t offset;
uint32_t virtualaddr;
uint32_t physicaladdr;
uint32_t filesize;
uint32_t memorysize;
uint32_t flags;
uint32_t align;
};
struct ProgramHeader64
{
uint32_t type;
uint32_t flags;
uint64_t offset;
uint64_t virtualaddr;
uint64_t physicaladdr;
uint64_t filesize;
uint64_t memorysize;
uint64_t align;
};
const uint32_t PT_NULL = 0;
const uint32_t PT_LOAD = 1;
const uint32_t PT_DYNAMIC = 2;
const uint32_t PT_INTERP = 3;
const uint32_t PT_NOTE = 4;
const uint32_t PT_SHLIB = 5;
const uint32_t PT_PHDR = 6;
const uint32_t PT_LOPROC = 0x70000000;
const uint32_t PT_HIPROC = 0x7FFFFFFF;
const uint32_t PF_X = (1<<0);
const uint32_t PF_W = (1<<1);
const uint32_t PF_R = (1<<2);
// Reads the elf file into the current address space and returns the
// entry address of the program, or 0 upon failure.
addr_t Construct(Process* process, const void* file, size_t filelen);
}
}
#endif