diff options
Diffstat (limited to 'linkers/elftoolchain/libelf/_libelf.h')
| -rw-r--r-- | linkers/elftoolchain/libelf/_libelf.h | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/linkers/elftoolchain/libelf/_libelf.h b/linkers/elftoolchain/libelf/_libelf.h new file mode 100644 index 0000000..ef15642 --- /dev/null +++ b/linkers/elftoolchain/libelf/_libelf.h @@ -0,0 +1,211 @@ +/*- + * Copyright (c) 2006,2008-2011 Joseph Koshy + * 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: _libelf.h 1921 2011-09-23 08:04:02Z jkoshy $ + */ + +#ifndef __LIBELF_H_ +#define __LIBELF_H_ + +#include <sys/queue.h> + +#include "_libelf_config.h" + +#include "_elftc.h" + +/* + * Library-private data structures. + */ + +#define LIBELF_MSG_SIZE 256 + +struct _libelf_globals { + int libelf_arch; + unsigned int libelf_byteorder; + int libelf_class; + int libelf_error; + int libelf_fillchar; + unsigned int libelf_version; + char libelf_msg[LIBELF_MSG_SIZE]; +}; + +extern struct _libelf_globals _libelf; + +#define LIBELF_PRIVATE(N) (_libelf.libelf_##N) + +#define LIBELF_ELF_ERROR_MASK 0xFF +#define LIBELF_OS_ERROR_SHIFT 8 + +#define LIBELF_SET_ERROR(E, O) do { \ + LIBELF_PRIVATE(error) = ((ELF_E_##E & LIBELF_ELF_ERROR_MASK)| \ + ((O) << LIBELF_OS_ERROR_SHIFT)); \ + } while (0) + +#define LIBELF_ADJUST_AR_SIZE(S) (((S) + 1U) & ~1U) + +/* + * Flags for library internal use. These use the upper 16 bits of the + * `e_flags' field. + */ +#define LIBELF_F_API_MASK 0x00FFFF /* Flags defined by the API. */ +#define LIBELF_F_AR_HEADER 0x010000 /* translated header available */ +#define LIBELF_F_AR_VARIANT_SVR4 0x020000 /* BSD style ar(1) archive */ +#define LIBELF_F_DATA_MALLOCED 0x040000 /* whether data was malloc'ed */ +#define LIBELF_F_RAWFILE_MALLOC 0x080000 /* whether e_rawfile was malloc'ed */ +#define LIBELF_F_RAWFILE_MMAP 0x100000 /* whether e_rawfile was mmap'ed */ +#define LIBELF_F_SHDRS_LOADED 0x200000 /* whether all shdrs were read in */ +#define LIBELF_F_SPECIAL_FILE 0x400000 /* non-regular file */ + +struct _Elf { + int e_activations; /* activation count */ + unsigned int e_byteorder; /* ELFDATA* */ + int e_class; /* ELFCLASS* */ + Elf_Cmd e_cmd; /* ELF_C_* used at creation time */ + int e_fd; /* associated file descriptor */ + unsigned int e_flags; /* ELF_F_* & LIBELF_F_* flags */ + Elf_Kind e_kind; /* ELF_K_* */ + Elf *e_parent; /* non-NULL for archive members */ + char *e_rawfile; /* uninterpreted bytes */ + size_t e_rawsize; /* size of uninterpreted bytes */ + unsigned int e_version; /* file version */ + + /* + * Header information for archive members. See the + * LIBELF_F_AR_HEADER flag. + */ + union { + Elf_Arhdr *e_arhdr; /* translated header */ + char *e_rawhdr; /* untranslated header */ + } e_hdr; + + union { + struct { /* ar(1) archives */ + off_t e_next; /* set by elf_rand()/elf_next() */ + int e_nchildren; + char *e_rawstrtab; /* file name strings */ + size_t e_rawstrtabsz; + char *e_rawsymtab; /* symbol table */ + size_t e_rawsymtabsz; + Elf_Arsym *e_symtab; + size_t e_symtabsz; + } e_ar; + struct { /* regular ELF files */ + union { + Elf32_Ehdr *e_ehdr32; + Elf64_Ehdr *e_ehdr64; + } e_ehdr; + union { + Elf32_Phdr *e_phdr32; + Elf64_Phdr *e_phdr64; + } e_phdr; + STAILQ_HEAD(, _Elf_Scn) e_scn; /* section list */ + size_t e_nphdr; /* number of Phdr entries */ + size_t e_nscn; /* number of sections */ + size_t e_strndx; /* string table section index */ + } e_elf; + } e_u; +}; + +struct _Elf_Scn { + union { + Elf32_Shdr s_shdr32; + Elf64_Shdr s_shdr64; + } s_shdr; + STAILQ_HEAD(, _Elf_Data) s_data; /* list of Elf_Data descriptors */ + STAILQ_HEAD(, _Elf_Data) s_rawdata; /* raw data for this section */ + STAILQ_ENTRY(_Elf_Scn) s_next; + struct _Elf *s_elf; /* parent ELF descriptor */ + unsigned int s_flags; /* flags for the section as a whole */ + size_t s_ndx; /* index# for this section */ + uint64_t s_offset; /* managed by elf_update() */ + uint64_t s_rawoff; /* original offset in the file */ + uint64_t s_size; /* managed by elf_update() */ +}; + + +enum { + ELF_TOFILE, + ELF_TOMEMORY +}; + +#define LIBELF_COPY_U32(DST,SRC,NAME) do { \ + if ((SRC)->NAME > UINT_MAX) { \ + LIBELF_SET_ERROR(RANGE, 0); \ + return (0); \ + } \ + (DST)->NAME = (SRC)->NAME; \ + } while (0) + +#define LIBELF_COPY_S32(DST,SRC,NAME) do { \ + if ((SRC)->NAME > INT_MAX || \ + (SRC)->NAME < INT_MIN) { \ + LIBELF_SET_ERROR(RANGE, 0); \ + return (0); \ + } \ + (DST)->NAME = (SRC)->NAME; \ + } while (0) + + +/* + * Function Prototypes. + */ + +__BEGIN_DECLS +Elf_Data *_libelf_allocate_data(Elf_Scn *_s); +Elf *_libelf_allocate_elf(void); +Elf_Scn *_libelf_allocate_scn(Elf *_e, size_t _ndx); +Elf_Arhdr *_libelf_ar_gethdr(Elf *_e); +Elf *_libelf_ar_open(Elf *_e); +Elf *_libelf_ar_open_member(int _fd, Elf_Cmd _c, Elf *_ar); +int _libelf_ar_get_member(char *_s, size_t _sz, int _base, size_t *_ret); +Elf_Arsym *_libelf_ar_process_bsd_symtab(Elf *_ar, size_t *_dst); +Elf_Arsym *_libelf_ar_process_svr4_symtab(Elf *_ar, size_t *_dst); +unsigned long _libelf_checksum(Elf *_e, int _elfclass); +void *_libelf_ehdr(Elf *_e, int _elfclass, int _allocate); +int _libelf_falign(Elf_Type _t, int _elfclass); +size_t _libelf_fsize(Elf_Type _t, int _elfclass, unsigned int _version, + size_t count); +int (*_libelf_get_translator(Elf_Type _t, int _direction, int _elfclass)) + (char *_dst, size_t dsz, char *_src, size_t _cnt, int _byteswap); +void *_libelf_getphdr(Elf *_e, int _elfclass); +void *_libelf_getshdr(Elf_Scn *_scn, int _elfclass); +void _libelf_init_elf(Elf *_e, Elf_Kind _kind); +int _libelf_load_section_headers(Elf *e, void *ehdr); +int _libelf_malign(Elf_Type _t, int _elfclass); +size_t _libelf_msize(Elf_Type _t, int _elfclass, unsigned int _version); +void *_libelf_newphdr(Elf *_e, int _elfclass, size_t _count); +Elf_Data *_libelf_release_data(Elf_Data *_d); +Elf *_libelf_release_elf(Elf *_e); +Elf_Scn *_libelf_release_scn(Elf_Scn *_s); +int _libelf_setphnum(Elf *_e, void *_eh, int _elfclass, size_t _phnum); +int _libelf_setshnum(Elf *_e, void *_eh, int _elfclass, size_t _shnum); +int _libelf_setshstrndx(Elf *_e, void *_eh, int _elfclass, + size_t _shstrndx); +Elf_Data *_libelf_xlate(Elf_Data *_d, const Elf_Data *_s, + unsigned int _encoding, int _elfclass, int _direction); +int _libelf_xlate_shtype(uint32_t _sht); +__END_DECLS + +#endif /* __LIBELF_H_ */ |