[lttng-ust.git] / include / lttng / ust-elf.h

/*
 * SPDX-License-Identifier: LGPL-2.1-or-later
 *
 * Copyright (C) 2015 Antoine Busque <abusque@efficios.com>
 */

#ifndef _LTTNG_UST_ELF_H
#define _LTTNG_UST_ELF_H

#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>

struct lttng_ust_elf_ehdr {
	uint16_t e_type;
	uint16_t e_machine;
	uint32_t e_version;
	uint64_t e_entry;
	uint64_t e_phoff;
	uint64_t e_shoff;
	uint32_t e_flags;
	uint16_t e_ehsize;
	uint16_t e_phentsize;
	uint16_t e_phnum;
	uint16_t e_shentsize;
	uint16_t e_shnum;
	uint16_t e_shstrndx;
};

struct lttng_ust_elf_phdr {
	uint32_t p_type;
	uint64_t p_offset;
	uint64_t p_filesz;
	uint64_t p_memsz;
	uint64_t p_align;
	uint64_t p_vaddr;
};

struct lttng_ust_elf_shdr {
	uint32_t sh_name;
	uint32_t sh_type;
	uint64_t sh_flags;
	uint64_t sh_addr;
	uint64_t sh_offset;
	uint64_t sh_size;
	uint32_t sh_link;
	uint32_t sh_info;
	uint64_t sh_addralign;
	uint64_t sh_entsize;
};

struct lttng_ust_elf_nhdr {
	uint32_t n_namesz;
	uint32_t n_descsz;
	uint32_t n_type;
};

struct lttng_ust_elf {
	/* Offset in bytes to start of section names string table. */
	off_t section_names_offset;
	/* Size in bytes of section names string table. */
	size_t section_names_size;
	char *path;
	int fd;
	struct lttng_ust_elf_ehdr *ehdr;
	uint8_t bitness;
	uint8_t endianness;
};

struct lttng_ust_elf *lttng_ust_elf_create(const char *path);
void lttng_ust_elf_destroy(struct lttng_ust_elf *elf);
uint8_t lttng_ust_elf_is_pic(struct lttng_ust_elf *elf);
int lttng_ust_elf_get_memsz(struct lttng_ust_elf *elf, uint64_t *memsz);
int lttng_ust_elf_get_build_id(struct lttng_ust_elf *elf, uint8_t **build_id,
			size_t *length, int *found);
int lttng_ust_elf_get_debug_link(struct lttng_ust_elf *elf, char **filename,
			uint32_t *crc, int *found);

#endif	/* _LTTNG_UST_ELF_H */
Commit	Line	Data
8e2aed3f	1	/*
c0c0989a	2	* SPDX-License-Identifier: LGPL-2.1-or-later
8e2aed3f	3	*
c0c0989a	4	* Copyright (C) 2015 Antoine Busque <abusque@efficios.com>
8e2aed3f AB	5	*/
8e2aed3f AB	6
c0c0989a MJ	7	#ifndef _LTTNG_UST_ELF_H
	8	#define _LTTNG_UST_ELF_H
	9
8e2aed3f AB	10	#include <stdlib.h>
	11	#include <stdint.h>
	12	#include <stdio.h>
8e2aed3f AB	13
	14	struct lttng_ust_elf_ehdr {
	15	uint16_t e_type;
	16	uint16_t e_machine;
	17	uint32_t e_version;
	18	uint64_t e_entry;
	19	uint64_t e_phoff;
	20	uint64_t e_shoff;
	21	uint32_t e_flags;
	22	uint16_t e_ehsize;
	23	uint16_t e_phentsize;
	24	uint16_t e_phnum;
	25	uint16_t e_shentsize;
	26	uint16_t e_shnum;
	27	uint16_t e_shstrndx;
	28	};
	29
	30	struct lttng_ust_elf_phdr {
	31	uint32_t p_type;
	32	uint64_t p_offset;
	33	uint64_t p_filesz;
	34	uint64_t p_memsz;
	35	uint64_t p_align;
e1f0c569	36	uint64_t p_vaddr;
8e2aed3f AB	37	};
	38
	39	struct lttng_ust_elf_shdr {
	40	uint32_t sh_name;
	41	uint32_t sh_type;
	42	uint64_t sh_flags;
	43	uint64_t sh_addr;
	44	uint64_t sh_offset;
	45	uint64_t sh_size;
	46	uint32_t sh_link;
	47	uint32_t sh_info;
	48	uint64_t sh_addralign;
	49	uint64_t sh_entsize;
	50	};
	51
	52	struct lttng_ust_elf_nhdr {
	53	uint32_t n_namesz;
	54	uint32_t n_descsz;
	55	uint32_t n_type;
	56	};
	57
	58	struct lttng_ust_elf {
	59	/* Offset in bytes to start of section names string table. */
f5a6717a	60	off_t section_names_offset;
8e2aed3f	61	/* Size in bytes of section names string table. */
f5a6717a	62	size_t section_names_size;
8e2aed3f	63	char *path;
405be658	64	int fd;
8e2aed3f AB	65	struct lttng_ust_elf_ehdr *ehdr;
	66	uint8_t bitness;
	67	uint8_t endianness;
	68	};
	69
8e2aed3f AB	70	struct lttng_ust_elf lttng_ust_elf_create(const char path);
8e2aed3f AB	71	void lttng_ust_elf_destroy(struct lttng_ust_elf *elf);
f5eb039d	72	uint8_t lttng_ust_elf_is_pic(struct lttng_ust_elf *elf);
8e2aed3f AB	73	int lttng_ust_elf_get_memsz(struct lttng_ust_elf elf, uint64_t memsz);
	74	int lttng_ust_elf_get_build_id(struct lttng_ust_elf elf, uint8_t *build_id,
	75	size_t length, int found);
	76	int lttng_ust_elf_get_debug_link(struct lttng_ust_elf elf, char *filename,
	77	uint32_t crc, int found);
	78
	79	#endif /* _LTTNG_UST_ELF_H */