From 7cd468a3d7dee7d6c92f69a0bb7061ae208ec727 Mon Sep 17 00:00:00 2001 From: Damjan Marion Date: Mon, 19 Dec 2016 23:05:39 +0100 Subject: Reorganize source tree to use single autotools instance Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion --- src/vppinfra/elf_clib.h | 144 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 144 insertions(+) create mode 100644 src/vppinfra/elf_clib.h (limited to 'src/vppinfra/elf_clib.h') diff --git a/src/vppinfra/elf_clib.h b/src/vppinfra/elf_clib.h new file mode 100644 index 00000000..25b928c2 --- /dev/null +++ b/src/vppinfra/elf_clib.h @@ -0,0 +1,144 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2012 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_elf_self_h +#define included_clib_elf_self_h + +#include +#include + +#define CLIB_ELF_SECTION_DATA_ALIGN 32 + +#define CLIB_ELF_SECTION_ADD_PREFIX(n) "clib_elf_section_" n + +/* Attribute used is so that static registrations work even if + variable is not referenced. */ +#define CLIB_ELF_SECTION(SECTION) \ + __attribute__ ((used, \ + aligned (CLIB_ELF_SECTION_DATA_ALIGN), \ + section (CLIB_ELF_SECTION_ADD_PREFIX (SECTION)))) + +/* Given pointer to previous data A get next pointer. EXTRA gives extra + space beyond A + 1 used in object. */ +#define clib_elf_section_data_next(a,extra) \ + uword_to_pointer (round_pow2 (pointer_to_uword (a + 1) + (extra), \ + CLIB_ELF_SECTION_DATA_ALIGN), \ + void *) + +typedef struct +{ + void *lo, *hi; +} clib_elf_section_bounds_t; + +typedef struct +{ + /* Vector of bounds for this section. Multiple shared objects may have instances + of the same sections. */ + clib_elf_section_bounds_t *bounds; + + /* Name of ELF section (e.g. .text). */ + u8 *name; +} clib_elf_section_t; + +typedef struct +{ + /* Vector of sections. */ + clib_elf_section_t *sections; + + /* Hash map of name to section index. */ + uword *section_by_name; + + /* Unix path that we were exec()ed with. */ + char *exec_path; + + elf_main_t *elf_mains; +} clib_elf_main_t; + +always_inline void +clib_elf_main_free (clib_elf_main_t * m) +{ + clib_elf_section_t *s; + vec_foreach (s, m->sections) + { + vec_free (s->bounds); + vec_free (s->name); + } + vec_free (m->sections); + hash_free (m->section_by_name); + + { + elf_main_t *em; + vec_foreach (em, m->elf_mains) + { + elf_main_free (em); + } + vec_free (m->elf_mains); + } +} + +/* Call with exec_path equal to argv[0] from C main. */ +void clib_elf_main_init (char *exec_path); + +clib_elf_section_bounds_t *clib_elf_get_section_bounds (char *name); + +typedef struct +{ + /* The symbol. */ + elf64_symbol_t symbol; + + /* elf_main_t where symbol came from. */ + u32 elf_main_index; + + /* Symbol table in elf_main_t where this symbol came from. */ + u32 symbol_table_index; +} clib_elf_symbol_t; + +/* Returns 1 if found; otherwise zero. */ +uword clib_elf_symbol_by_name (char *name, clib_elf_symbol_t * result); +uword clib_elf_symbol_by_address (uword address, clib_elf_symbol_t * result); + +format_function_t format_clib_elf_symbol, format_clib_elf_symbol_with_address; + +#endif /* included_clib_elf_self_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ -- cgit 1.2.3-korg