L4Re ELF Auxiliary Information

API for embedding auxiliary information into binary programs. More...

Collaboration diagram for L4Re ELF Auxiliary Information:

Data Structures
struct	l4re_elf_aux_t
	Generic header for each auxiliary vector element. More...
struct	l4re_elf_aux_vma_t
	Auxiliary vector element for a reserved virtual memory area. More...
struct	l4re_elf_aux_mword_t
	Auxiliary vector element for a single unsigned data word. More...

Macros
#define	L4RE_ELF_AUX_ELEM   const __attribute__((used, section(".rol4re_elf_aux"), aligned(sizeof(l4_umword_t))))
	Define an auxiliary vector element.
#define	L4RE_ELF_AUX_ELEM_T(type, id, tag, val...)
	Define an auxiliary vector element.

Typedefs
typedef struct l4re_elf_aux_t	l4re_elf_aux_t
	Generic header for each auxiliary vector element.
typedef struct l4re_elf_aux_vma_t	l4re_elf_aux_vma_t
	Auxiliary vector element for a reserved virtual memory area.
typedef struct l4re_elf_aux_mword_t	l4re_elf_aux_mword_t
	Auxiliary vector element for a single unsigned data word.

Enumerations
enum	{   L4RE_ELF_AUX_T_NONE = 0 , L4RE_ELF_AUX_T_VMA , L4RE_ELF_AUX_T_STACK_SIZE , L4RE_ELF_AUX_T_STACK_ADDR ,   L4RE_ELF_AUX_T_KIP_ADDR , L4RE_ELF_AUX_T_EX_REGS_FLAGS }

Detailed Description

API for embedding auxiliary information into binary programs.

This API allows information for the binary loader to be embedded into a binary application. This information can be reserved areas in the virtual memory of an application and things such as the stack size to be allocated for the first application thread.

Macro Definition Documentation

L4RE_ELF_AUX_ELEM

#define L4RE_ELF_AUX_ELEM   const __attribute__((used, section(".rol4re_elf_aux"), aligned(sizeof(l4_umword_t))))

Define an auxiliary vector element.

This is the generic method for defining auxiliary vector elements. A more convenient way is to use L4RE_ELF_AUX_ELEM_T.

Usage:

L4RE_ELF_AUX_ELEM l4re_elf_aux_vma_t decl_name =
  { L4RE_ELF_AUX_T_VMA, sizeof(l4re_elf_aux_vma_t), 0x2000, 0x4000 };

Definition at line 41 of file elf_aux.h.

L4RE_ELF_AUX_ELEM_T

#define L4RE_ELF_AUX_ELEM_T	(		type,
			id,
			tag,
			val... )

Value:

  static L4RE_ELF_AUX_ELEM type id = {tag, sizeof(type), val}

Define an auxiliary vector element.

Parameters

type	is the data type for the element (e.g., l4re_elf_aux_vma_t)
id	is the identifier (variable name) for the declaration (the variable is defined with static storage class)
tag	is the tag value for the element e.g., L4RE_ELF_AUX_T_VMA
val	are the values to be set in the descriptor

Usage:

L4RE_ELF_AUX_ELEM_T(l4re_elf_aux_vma_t, decl_name, L4RE_ELF_AUX_T_VMA, 0x2000, 0x4000 };

Definition at line 56 of file elf_aux.h.

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
L4RE_ELF_AUX_T_NONE	Tag for an invalid element in the auxiliary vector.
L4RE_ELF_AUX_T_VMA	Tag for descriptor for a reserved virtual memory area.
L4RE_ELF_AUX_T_STACK_SIZE	Tag for descriptor that defines the stack size for the first application thread.
L4RE_ELF_AUX_T_STACK_ADDR	Tag for descriptor that defines the stack address for the first application thread.
L4RE_ELF_AUX_T_KIP_ADDR	Tag for descriptor that defines the KIP address for the binaries address space.
L4RE_ELF_AUX_T_EX_REGS_FLAGS	Tag for descriptor to override ex_regs() flags.

Definition at line 59 of file elf_aux.h.