100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
#pragma once
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#include "process.h"
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#include "thread.h"
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#include "types.h"
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/**
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* Typedefs, constants and structure definitions as given by the ELF
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* standard specifications.
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*/
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typedef unsigned long Elf32_Addr;
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typedef unsigned long Elf32_Word;
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typedef unsigned short Elf32_Half;
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typedef unsigned long Elf32_Off;
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// typedef signed long Elf32_Sword;
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/**
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* ELF 32-bit format related structures.
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* See http://www.cs.cmu.edu/afs/cs/academic/class/15213-f00/docs/elf.pdf
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*/
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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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/** ELF Header **/
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#define EI_NIDENT 16
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typedef struct {
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unsigned char 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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} __attribute__((packed)) Elf32_Ehdr_t;
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/** ELF Section header */
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typedef struct {
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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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} __attribute__((packed)) Elf32_Shdr_t;
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/** ELF Symbol **/
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typedef struct {
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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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unsigned char st_info;
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unsigned char st_other;
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Elf32_Half st_shndx;
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} __attribute__((packed)) Elf32_Sym_t;
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/** ELF Program header **/
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typedef struct {
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Elf32_Word p_type;
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Elf32_Off p_offset;
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Elf32_Addr p_vaddr;
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Elf32_Addr p_paddr;
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Elf32_Word p_filesz;
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Elf32_Word p_memsz;
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Elf32_Word p_flags;
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Elf32_Word p_align;
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} __attribute__((packed)) Elf32_Phdr_t;
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#define ELF_SYM_TYPE(info) ((info) & 0xf)
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#define ELF_SYM_TYPE_FUNC 0x2
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uaddr_t loadElfProg(const char *prog, struct process *proc);
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