7cd468a3d7
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion <damarion@cisco.com>
145 lines
4.2 KiB
C
145 lines
4.2 KiB
C
/*
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* Copyright (c) 2015 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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Copyright (c) 2012 Eliot Dresselhaus
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef included_clib_elf_self_h
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#define included_clib_elf_self_h
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#include <vppinfra/elf.h>
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#include <vppinfra/hash.h>
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#define CLIB_ELF_SECTION_DATA_ALIGN 32
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#define CLIB_ELF_SECTION_ADD_PREFIX(n) "clib_elf_section_" n
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/* Attribute used is so that static registrations work even if
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variable is not referenced. */
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#define CLIB_ELF_SECTION(SECTION) \
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__attribute__ ((used, \
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aligned (CLIB_ELF_SECTION_DATA_ALIGN), \
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section (CLIB_ELF_SECTION_ADD_PREFIX (SECTION))))
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/* Given pointer to previous data A get next pointer. EXTRA gives extra
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space beyond A + 1 used in object. */
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#define clib_elf_section_data_next(a,extra) \
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uword_to_pointer (round_pow2 (pointer_to_uword (a + 1) + (extra), \
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CLIB_ELF_SECTION_DATA_ALIGN), \
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void *)
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typedef struct
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{
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void *lo, *hi;
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} clib_elf_section_bounds_t;
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typedef struct
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{
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/* Vector of bounds for this section. Multiple shared objects may have instances
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of the same sections. */
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clib_elf_section_bounds_t *bounds;
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/* Name of ELF section (e.g. .text). */
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u8 *name;
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} clib_elf_section_t;
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typedef struct
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{
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/* Vector of sections. */
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clib_elf_section_t *sections;
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/* Hash map of name to section index. */
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uword *section_by_name;
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/* Unix path that we were exec()ed with. */
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char *exec_path;
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elf_main_t *elf_mains;
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} clib_elf_main_t;
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always_inline void
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clib_elf_main_free (clib_elf_main_t * m)
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{
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clib_elf_section_t *s;
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vec_foreach (s, m->sections)
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{
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vec_free (s->bounds);
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vec_free (s->name);
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}
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vec_free (m->sections);
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hash_free (m->section_by_name);
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{
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elf_main_t *em;
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vec_foreach (em, m->elf_mains)
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{
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elf_main_free (em);
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}
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vec_free (m->elf_mains);
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}
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}
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/* Call with exec_path equal to argv[0] from C main. */
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void clib_elf_main_init (char *exec_path);
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clib_elf_section_bounds_t *clib_elf_get_section_bounds (char *name);
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typedef struct
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{
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/* The symbol. */
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elf64_symbol_t symbol;
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/* elf_main_t where symbol came from. */
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u32 elf_main_index;
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/* Symbol table in elf_main_t where this symbol came from. */
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u32 symbol_table_index;
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} clib_elf_symbol_t;
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/* Returns 1 if found; otherwise zero. */
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uword clib_elf_symbol_by_name (char *name, clib_elf_symbol_t * result);
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uword clib_elf_symbol_by_address (uword address, clib_elf_symbol_t * result);
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format_function_t format_clib_elf_symbol, format_clib_elf_symbol_with_address;
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#endif /* included_clib_elf_self_h */
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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