elf32.c File Reference

#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include <types.h>
#include <elf.h>
#include <elf_helpers.h>
#include <elf_loader.h>
#include <log.h>

Include dependency graph for elf32.c:

Functions
void	print_elf32_ehdr (Elf32_Ehdr *header)
phys_addr_t	elf32_get_entry_addr (phys_addr_t base)
	Get the entry address from the ELF32 file header.
static phys_addr_t	set_img_va_to_pa (phys_addr_t vaddr, vaddr_range_t *map, uint32_t size)
	Map virtual address to physical address.
int	load_elf32_image (phys_addr_t img_addr)
	Loads an ELF32 image into memory starting at 'img_addr'.
int	load_elf32_image_remap (phys_addr_t img_addr, vaddr_map_t *map)
	Loads an ELF32 image into memory starting at 'img_addr', with remap va to pa.
static Elf32_Shdr *	elf32_find_segment (phys_addr_t elf_addr, const char *seg_name)
void *	elf32_find_segment_offset (phys_addr_t elf_addr, const char *seg_name)
void *	elf32_find_segment_addr (phys_addr_t elf_addr, const char *seg_name)

Variables
static vaddr_map_t	default_addr_mapping

Function Documentation

elf32_find_segment()

static Elf32_Shdr * elf32_find_segment ( phys_addr_t  elf_addr, const char *  seg_name  )

static

elf32_find_segment_addr()

void * elf32_find_segment_addr	(	phys_addr_t	elf_addr,
		const char *	seg_name
	)

elf32_find_segment_offset()

void * elf32_find_segment_offset	(	phys_addr_t	elf_addr,
		const char *	seg_name
	)

elf32_get_entry_addr()

phys_addr_t elf32_get_entry_addr

(

phys_addr_t

base

)

Get the entry address from the ELF32 file header.

Extracts the entry address from an ELF32 image loaded at 'base'.

Parameters

base	Base address of the ELF32 file

Returns

Entry address

load_elf32_image()

int load_elf32_image

(

phys_addr_t

img_addr

)

Loads an ELF32 image into memory starting at 'img_addr'.

Parameters

img_addr

The starting address to load the ELF32 image.

Returns

0 if successful, -1 otherwise.

load_elf32_image_remap()

int load_elf32_image_remap	(	phys_addr_t	img_addr,
		vaddr_map_t *	map
	)

Loads an ELF32 image into memory starting at 'img_addr', with remap va to pa.

Parameters

img_addr	The starting address to load the ELF32 image.
map	The address mapping table.

Returns

0 if successful, -1 otherwise.

print_elf32_ehdr()

void print_elf32_ehdr

(

Elf32_Ehdr *

header

)

set_img_va_to_pa()

static phys_addr_t set_img_va_to_pa ( phys_addr_t  vaddr, vaddr_range_t *  map, uint32_t  size  )

static

Map virtual address to physical address.

Parameters

vaddr	Virtual address to be mapped
map	Mapping table containing virtual address range and corresponding physical address range
size	Size of the mapping table

Returns

Mapped physical address

Variable Documentation

default_addr_mapping

vaddr_map_t default_addr_mapping

static

Initial value:

= {
        .range = (vaddr_range_t *) NULL,
        .range_size = 0,
}