haiku/headers/private/kernel/boot/elf.h
David Karoly 6117e0c29c boot/loader: relocate kernel to virtual address space on 32-bit architectures
Change-Id: Ic86ca6874f358df8755a0c691cccb155d145e06c
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4675
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Fredrik Holmqvist <fredrik.holmqvist@gmail.com>
2022-01-01 11:35:28 +00:00

101 lines
2.5 KiB
C

/*
* Copyright 2003-2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
* Copyright 2012, Alex Smith, alex@alex-smith.me.uk.
* Distributed under the terms of the MIT License.
*/
#ifndef KERNEL_BOOT_ELF_H
#define KERNEL_BOOT_ELF_H
#include <boot/addr_range.h>
#include <sys/stat.h>
#include <elf_priv.h>
#include <util/FixedWidthPointer.h>
typedef struct elf32_region {
area_id id;
uint32 start;
uint32 size;
int32 delta;
} _PACKED elf32_region;
typedef struct elf64_region {
area_id id;
uint64 start;
uint64 size;
int64 delta;
} _PACKED elf64_region;
struct preloaded_image {
FixedWidthPointer<struct preloaded_image> next;
FixedWidthPointer<char> name;
uint8 elf_class;
addr_range dynamic_section;
FixedWidthPointer<char> debug_string_table;
uint32 num_debug_symbols;
uint32 debug_string_table_size;
ino_t inode;
image_id id;
// the ID field will be filled out in the kernel
bool is_module;
// set by the module initialization code
} _PACKED;
struct preloaded_elf32_image : public preloaded_image {
Elf32_Ehdr elf_header;
elf32_region text_region;
elf32_region data_region;
FixedWidthPointer<Elf32_Sym> syms;
FixedWidthPointer<Elf32_Rel> rel;
int32 rel_len;
FixedWidthPointer<Elf32_Rela> rela;
int32 rela_len;
FixedWidthPointer<Elf32_Rel> pltrel;
int32 pltrel_len;
int32 pltrel_type;
FixedWidthPointer<Elf32_Sym> debug_symbols;
} _PACKED;
struct preloaded_elf64_image : public preloaded_image {
Elf64_Ehdr elf_header;
elf64_region text_region;
elf64_region data_region;
FixedWidthPointer<Elf64_Sym> syms;
FixedWidthPointer<Elf64_Rel> rel;
int64 rel_len;
FixedWidthPointer<Elf64_Rela> rela;
int64 rela_len;
FixedWidthPointer<Elf64_Rel> pltrel;
int64 pltrel_len;
int64 pltrel_type;
FixedWidthPointer<Elf64_Sym> debug_symbols;
} _PACKED;
#if B_HAIKU_64_BIT
typedef preloaded_elf64_image preloaded_elf_image;
#else
typedef preloaded_elf32_image preloaded_elf_image;
#endif
#ifdef _BOOT_MODE
extern status_t boot_elf_resolve_symbol(preloaded_elf32_image* image,
Elf32_Sym* symbol, Elf32_Addr* symbolAddress);
extern status_t boot_elf_resolve_symbol(preloaded_elf64_image* image,
Elf64_Sym* symbol, Elf64_Addr* symbolAddress);
extern Elf32_Addr boot_elf32_get_relocation(Elf32_Addr resolveAddress);
extern void boot_elf32_set_relocation(Elf32_Addr resolveAddress,
Elf32_Addr finalAddress);
extern void boot_elf64_set_relocation(Elf64_Addr resolveAddress,
Elf64_Addr finalAddress);
#endif
#endif /* KERNEL_BOOT_ELF_H */