Files
codezero/tasks/mm0/include/lib/elf/elfsect.h
Bahadir Balban 46937eab88 Added preliminary support for execve(). Updates to clone, fork, exit, task handling.
It turned out we used one version of kmalloc for malloc() and another for kfree()!
Now fixed.
Added parent-child relationship to tasks. Need to polish handling CLONE_PARENT and THREAD.
2008-11-19 12:59:52 +02:00

61 lines
2.0 KiB
C

/*
* Definitions for ELF Sections
* Based on Portable Formats Specification v1.1
*
* Copyright (C) 2008 Bahadir Balban
*/
#ifndef __ELFSECT_H__
#define __ELFSECT_H__
#include <l4/types.h>
/* 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
struct elf_section_header {
u32 sh_name; /* Index to section header str table for name */
u32 sh_type; /* Categorises section's semantics */
u32 sh_flags; /* Flags that define various attributes */
u32 sh_addr; /* Virtual address for section */
u32 sh_offset; /* Offset to contents from file beginning */
u32 sh_size; /* Size of section (note SHT_NOBITS) */
u32 sh_link;
u32 sh_info; /* Extra section info */
u32 sh_addralign; /* Section alignment in power of 2 */
u32 sh_entsize; /* Size of each entry if fixed */
} __attribute__((__packed__));
/* Section type codes */
#define SHT_NULL 0 /* Inactive */
#define SHT_PROGBITS 1 /* Program contents */
#define SHT_SYMTAB 2 /* Symbol table */
#define SHT_STRTAB 3 /* String table */
#define SHT_RELA 4 /* Relocation entries */
#define SHT_HASH 5 /* Symbol hash table */
#define SHT_DYNAMIC 6 /* Dynamic linking info */
#define SHT_NOTE 7 /* Optional, additional info */
#define SHT_NOBITS 8 /* Does not occupy file space */
#define SHT_REL 9 /* Relocation entries */
#define SHT_SHLIB 10 /* Reserved */
#define SHT_DYNSYM 11 /* Symbols for dynamic linking */
#define SHT_LOPROC 0x70000000 /* Reserved for processors */
#define SHT_HIPROC 0x7FFFFFFF /* Reserved for processors */
#define SHT_LOUSER 0x80000000 /* Reserved for user progs */
#define SHT_HIUSER 0xFFFFFFFF /* Reserved for user progs */
/* Section attribute flags */
#define SHF_WRITE (1 << 0) /* Writeable */
#define SHF_ALLOC (1 << 1) /* Occupies actual memory */
#define SHF_EXECINSTR (1 << 2) /* Executable */
#define SHF_MASCPROC 0xF0000000 /* Reserved for processors */
#endif /* __ELFSECT_H__ */