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freebsd-skq/contrib/elftoolchain/elfcopy/elfcopy.h
Ed Maste 3ef90571c1 Update to ELF Tool Chain r3223 
Highlights (upstream revisions):
 - Fix SHT_GROUP handling in elfcopy/strip (3206 3220 3221)
 - Misc elfcopy / strip bug fixes (3215 3216 3217)
 - Many C++ demangler improvements (3199 3200 3201 3202 3203 3204 3205
   3208 3210 3211 3212)
 - Improve GNU binutils compatibility in elfcopy / strip (3213 3214)
 - Add -g option to readelf(1): dump contents of section groups (3219)
 - Add EM_IAMCU 32-bit Intel MCU (3198)

Also add a compat #define for building with older FreeBSD ELF headers.
The GRP_COMDAT flag was added to elf_common.h in r283110, but it's not
available during the bootstrap build.  It is also convenient to be able
to build on older hosts.

Thanks to antoine@ for tracking down issues through multiple exp-runs
and to kaiw@ for fixing.

PR:		198611 (exp-run), 200350
Sponsored by:	The FreeBSD Foundation
2015-05-27 14:28:19 +00:00

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/*-
* Copyright (c) 2007-2013 Kai Wang
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: elfcopy.h 3221 2015-05-24 23:42:43Z kaiwang27 $
*/
#include <sys/queue.h>
#include <gelf.h>
#include <libelftc.h>
#include "_elftc.h"
/*
* User specified symbol operation (strip, keep, localize, globalize,
* weaken, rename, etc).
*/
struct symop {
const char *name;
const char *newname;
#define SYMOP_KEEP 0x0001U
#define SYMOP_STRIP 0x0002U
#define SYMOP_GLOBALIZE 0x0004U
#define SYMOP_LOCALIZE 0x0008U
#define SYMOP_KEEPG 0x0010U
#define SYMOP_WEAKEN 0x0020U
#define SYMOP_REDEF 0x0040U
unsigned int op;
STAILQ_ENTRY(symop) symop_list;
};
/* File containing symbol list. */
struct symfile {
dev_t dev;
ino_t ino;
size_t size;
char *data;
unsigned int op;
STAILQ_ENTRY(symfile) symfile_list;
};
/* Sections to copy/remove/rename/... */
struct sec_action {
const char *name;
const char *addopt;
const char *newname;
const char *string;
uint64_t lma;
uint64_t vma;
int64_t lma_adjust;
int64_t vma_adjust;
#define SF_ALLOC 0x0001U
#define SF_LOAD 0x0002U
#define SF_NOLOAD 0x0004U
#define SF_READONLY 0x0008U
#define SF_DEBUG 0x0010U
#define SF_CODE 0x0020U
#define SF_DATA 0x0040U
#define SF_ROM 0x0080U
#define SF_SHARED 0X0100U
#define SF_CONTENTS 0x0200U
int flags;
int add;
int append;
int compress;
int copy;
int print;
int remove;
int rename;
int setflags;
int setlma;
int setvma;
STAILQ_ENTRY(sec_action) sac_list;
};
/* Sections to add from file. */
struct sec_add {
char *name;
char *content;
size_t size;
STAILQ_ENTRY(sec_add) sadd_list;
};
struct segment;
/* Internal data structure for sections. */
struct section {
struct segment *seg; /* containing segment */
struct segment *seg_tls; /* tls segment */
const char *name; /* section name */
char *newname; /* new section name */
Elf_Scn *is; /* input scn */
Elf_Scn *os; /* output scn */
void *buf; /* section content */
uint8_t *pad; /* section padding */
uint64_t off; /* section offset */
uint64_t sz; /* section size */
uint64_t cap; /* section capacity */
uint64_t align; /* section alignment */
uint64_t type; /* section type */
uint64_t vma; /* section virtual addr */
uint64_t lma; /* section load addr */
uint64_t pad_sz;/* section padding size */
int loadable; /* whether loadable */
int pseudo;
int nocopy;
TAILQ_ENTRY(section) sec_list; /* next section */
};
/* Internal data structure for segments. */
struct segment {
uint64_t addr; /* load addr */
uint64_t off; /* file offset */
uint64_t fsz; /* file size */
uint64_t msz; /* memory size */
uint64_t type; /* segment type */
int remove; /* whether remove */
int nsec; /* number of sections contained */
struct section **v_sec; /* list of sections contained */
STAILQ_ENTRY(segment) seg_list; /* next segment */
};
/*
* In-memory representation of ar(1) archive member(object).
*/
struct ar_obj {
char *name; /* member name */
char *buf; /* member content */
void *maddr; /* mmap start address */
uid_t uid; /* user id */
gid_t gid; /* group id */
mode_t md; /* octal file permissions */
size_t size; /* member size */
time_t mtime; /* modification time */
STAILQ_ENTRY(ar_obj) objs;
};
/*
* Structure encapsulates the "global" data for "elfcopy" program.
*/
struct elfcopy {
const char *progname; /* program name */
int iec; /* elfclass of input object */
Elftc_Bfd_Target_Flavor itf; /* flavour of input object */
Elftc_Bfd_Target_Flavor otf; /* flavour of output object */
const char *otgt; /* output target name */
int oec; /* elfclass of output object */
unsigned char oed; /* endianess of output object */
int oem; /* EM_XXX of output object */
int abi; /* OSABI of output object */
Elf *ein; /* ELF descriptor of input object */
Elf *eout; /* ELF descriptor of output object */
int iphnum; /* num. of input object phdr entries */
int ophnum; /* num. of output object phdr entries */
int nos; /* num. of output object sections */
enum {
STRIP_NONE = 0,
STRIP_ALL,
STRIP_DEBUG,
STRIP_DWO,
STRIP_NONDEBUG,
STRIP_NONDWO,
STRIP_UNNEEDED
} strip;
#define EXECUTABLE 0x00000001U
#define DYNAMIC 0x00000002U
#define RELOCATABLE 0x00000004U
#define SYMTAB_EXIST 0x00000010U
#define SYMTAB_INTACT 0x00000020U
#define KEEP_GLOBAL 0x00000040U
#define DISCARD_LOCAL 0x00000080U
#define WEAKEN_ALL 0x00000100U
#define PRESERVE_DATE 0x00001000U
#define SREC_FORCE_S3 0x00002000U
#define SREC_FORCE_LEN 0x00004000U
#define SET_START 0x00008000U
#define GAP_FILL 0x00010000U
#define WILDCARD 0x00020000U
#define NO_CHANGE_WARN 0x00040000U
#define SEC_ADD 0x00080000U
#define SEC_APPEND 0x00100000U
#define SEC_COMPRESS 0x00200000U
#define SEC_PRINT 0x00400000U
#define SEC_REMOVE 0x00800000U
#define SEC_COPY 0x01000000U
#define DISCARD_LLABEL 0x02000000U
#define LOCALIZE_HIDDEN 0x04000000U
int flags; /* elfcopy run control flags. */
int64_t change_addr; /* Section address adjustment. */
int64_t change_start; /* Entry point adjustment. */
uint64_t set_start; /* Entry point value. */
unsigned long srec_len; /* S-Record length. */
uint64_t pad_to; /* load address padding. */
uint8_t fill; /* gap fill value. */
char *prefix_sec; /* section prefix. */
char *prefix_alloc; /* alloc section prefix. */
char *prefix_sym; /* symbol prefix. */
char *debuglink; /* GNU debuglink file. */
struct section *symtab; /* .symtab section. */
struct section *strtab; /* .strtab section. */
struct section *shstrtab; /* .shstrtab section. */
uint64_t *secndx; /* section index map. */
uint64_t *symndx; /* symbol index map. */
unsigned char *v_rel; /* symbols needed by relocation. */
unsigned char *v_grp; /* symbols refered by section group. */
unsigned char *v_secsym; /* sections with section symbol. */
STAILQ_HEAD(, segment) v_seg; /* list of segments. */
STAILQ_HEAD(, sec_action) v_sac;/* list of section operations. */
STAILQ_HEAD(, sec_add) v_sadd; /* list of sections to add. */
STAILQ_HEAD(, symop) v_symop; /* list of symbols operations. */
STAILQ_HEAD(, symfile) v_symfile; /* list of symlist files. */
TAILQ_HEAD(, section) v_sec; /* list of sections. */
/*
* Fields for the ar(1) archive.
*/
char *as; /* buffer for archive string table. */
size_t as_sz; /* current size of as table. */
size_t as_cap; /* capacity of as table buffer. */
uint32_t s_cnt; /* current number of symbols. */
uint32_t *s_so; /* symbol offset table. */
size_t s_so_cap; /* capacity of so table buffer. */
char *s_sn; /* symbol name table */
size_t s_sn_cap; /* capacity of sn table buffer. */
size_t s_sn_sz; /* current size of sn table. */
off_t rela_off; /* offset relative to pseudo members. */
STAILQ_HEAD(, ar_obj) v_arobj; /* archive object(member) list. */
};
void add_section(struct elfcopy *_ecp, const char *_optarg);
void add_to_shstrtab(struct elfcopy *_ecp, const char *_name);
void add_to_symop_list(struct elfcopy *_ecp, const char *_name,
const char *_newname, unsigned int _op);
void add_to_symtab(struct elfcopy *_ecp, const char *_name,
uint64_t _st_value, uint64_t _st_size, uint16_t _st_shndx,
unsigned char _st_info, unsigned char _st_other, int _ndx_known);
int add_to_inseg_list(struct elfcopy *_ecp, struct section *_sec);
void adjust_addr(struct elfcopy *_ecp);
void copy_content(struct elfcopy *_ecp);
void copy_data(struct section *_s);
void copy_phdr(struct elfcopy *_ecp);
void copy_shdr(struct elfcopy *_ecp, struct section *_s, const char *_name,
int _copy, int _sec_flags);
void create_binary(int _ifd, int _ofd);
void create_elf(struct elfcopy *_ecp);
void create_elf_from_binary(struct elfcopy *_ecp, int _ifd, const char *ifn);
void create_elf_from_ihex(struct elfcopy *_ecp, int _ifd);
void create_elf_from_srec(struct elfcopy *_ecp, int _ifd);
struct section *create_external_section(struct elfcopy *_ecp, const char *_name,
char *_newname, void *_buf, uint64_t _size, uint64_t _off, uint64_t _stype,
Elf_Type _dtype, uint64_t flags, uint64_t _align, uint64_t _vma,
int _loadable);
void create_external_symtab(struct elfcopy *_ecp);
void create_ihex(int _ifd, int _ofd);
void create_scn(struct elfcopy *_ecp);
void create_srec(struct elfcopy *_ecp, int _ifd, int _ofd, const char *_ofn);
void create_symtab(struct elfcopy *_ecp);
void create_symtab_data(struct elfcopy *_ecp);
void create_tempfile(char **_fn, int *_fd);
void finalize_external_symtab(struct elfcopy *_ecp);
void free_elf(struct elfcopy *_ecp);
void free_sec_act(struct elfcopy *_ecp);
void free_sec_add(struct elfcopy *_ecp);
void free_symtab(struct elfcopy *_ecp);
void init_shstrtab(struct elfcopy *_ecp);
void insert_to_sec_list(struct elfcopy *_ecp, struct section *_sec,
int _tail);
struct section *insert_shtab(struct elfcopy *_ecp, int tail);
int is_remove_reloc_sec(struct elfcopy *_ecp, uint32_t _sh_info);
int is_remove_section(struct elfcopy *_ecp, const char *_name);
struct sec_action *lookup_sec_act(struct elfcopy *_ecp,
const char *_name, int _add);
struct symop *lookup_symop_list(struct elfcopy *_ecp, const char *_name,
unsigned int _op);
void resync_sections(struct elfcopy *_ecp);
void set_shstrtab(struct elfcopy *_ecp);
void setup_phdr(struct elfcopy *_ecp);
void update_shdr(struct elfcopy *_ecp, int _update_link);
#ifndef LIBELF_AR
int ac_detect_ar(int _ifd);
void ac_create_ar(struct elfcopy *_ecp, int _ifd, int _ofd);
#endif /* ! LIBELF_AR */
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