xref: /haiku/headers/private/kernel/elf_priv.h (revision 513403d4200592b83363a078b8c789af91c626e0)

/*
 * Copyright 2002-2018, Haiku Inc. All Rights Reserved.
 * Distributed under the terms of the MIT license.
 *
 * Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
 * Distributed under the terms of the NewOS License.
 */
#ifndef _KERNEL_ELF_PRIV_H
#define _KERNEL_ELF_PRIV_H


#include <elf_private.h>

#include <image.h>


struct elf_version_info;


typedef struct elf_region {
	area_id		id;
	addr_t		start;
	addr_t		size;
	long		delta;
} elf_region;

struct elf_image_info {
	struct elf_image_info* next;		// next image in the hash
	char*			name;
	image_id		id;
	int32			ref_count;
	struct vnode*	vnode;
	elf_region		text_region;
	elf_region		data_region;
	addr_t			dynamic_section;	// pointer to the dynamic section
	struct elf_linked_image* linked_images;

	bool			symbolic;

	elf_ehdr*		elf_header;

	// pointer to symbol participation data structures
	char*			needed;
	uint32*			symhash;
	elf_sym*		syms;
	char*			strtab;
	elf_rel*		rel;
	int				rel_len;
	elf_rela*		rela;
	int				rela_len;
	elf_rel*		pltrel;
	int				pltrel_len;
	int				pltrel_type;

	elf_sym*		debug_symbols;
	uint32			num_debug_symbols;
	const char*		debug_string_table;

	// versioning related structures
	uint32			num_version_definitions;
	elf_verdef*		version_definitions;
	uint32			num_needed_versions;
	elf_verneed*	needed_versions;
	elf_versym*		symbol_versions;
	struct elf_version_info* versions;
	uint32			num_versions;
};


#define STRING(image, offset) ((char*)(&(image)->strtab[(offset)]))
#define SYMNAME(image, sym) STRING(image, (sym)->st_name)
#define SYMBOL(image, num) (&(image)->syms[num])
#define HASHTABSIZE(image) ((image)->symhash[0])
#define HASHBUCKETS(image) ((unsigned int*)&(image)->symhash[2])
#define HASHCHAINS(image) ((unsigned int*)&(image)->symhash[2+HASHTABSIZE(image)])


#ifdef __cplusplus
extern "C" {
#endif

extern status_t elf_resolve_symbol(struct elf_image_info* image,
	elf_sym* symbol, struct elf_image_info* sharedImage,
	elf_addr* _symbolAddress);

#ifdef __cplusplus
}
#endif


#endif	/* _KERNEL_ELF_PRIV_H */