Program Header Segment Types

List of numeric defines which identify segment entries types. More...

Macros
#define	PT_NULL   0
	Unused.
#define	PT_LOAD   1
	Specifies a loadable segment, described by p_filesz and p_memsz. The bytes from the file are mapped to the beginning of the memory segment. If the segment's memory size (p_memsz) is larger than the file size (p_filesz), the extra bytes are defined to hold the value 0 and to follow the segment's initialized area. The file size can not be larger than the memory size. Loadable segment entries in the program header table appear in ascending order, sorted on the p_vaddr member.
#define	PT_DYNAMIC   2
	Specifies dynamic linking information.
#define	PT_INTERP   3
	Specifies the location and size of a null-terminated path name to invoke as an interpreter. This segment type is mandatory for dynamic executable files and can occur in shared objects. It cannot occur more than once in a file. This type, if present, it must precede any loadable segment entry.
#define	PT_NOTE   4
	Specifies the location and size of auxiliary information.
#define	PT_SHLIB   5
	Reserved but has unspecified semantics.
#define	PT_PHDR   6
	Specifies the location and size of the program header table itself, both in the file and in the memory image of the program. This segment type cannot occur more than once in a file. Moreover, it can occur only if the program header table is part of the memory image of the program. This type, if present, must precede any loadable segment entry.
#define	PT_EH_FRAME   0x6474E550
	Section for supporting exception handling routines. More...
#define	PT_GNU_STACK   0x6474E551
	Is a program header which tells the system how to control the stack when the ELF is loaded into memory.
#define	PT_GNU_RELRO   0x6474E552
	This segment indicates the memory region which should be made Read-Only after relocation is done. This segment usually appears in a dynamic link library and it contains .ctors, .dtors, .dynamic, .got s ections. See paragraph below.
#define	PT_LOPROC   0x70000000
	TODO: Document.
#define	PT_HIPROC   0x7FFFFFFF
	TODO: Document.

Detailed Description

List of numeric defines which identify segment entries types.

Macro Definition Documentation

PT_EH_FRAME

#define PT_EH_FRAME   0x6474E550

Section for supporting exception handling routines.

The .eh_frame section has the same structure with .debug_frame, which follows DWARF format. It represents the table that describes how to set registers to restore the previous call frame at runtime.