d20bd62e08
let the nuttx print out symbolic crash information and symbolic stack backtraces. This increases the size of the nuttx somewhat, as all symbols have to be loaded into the nuttx image. Signed-off-by: chao.an <anchao@xiaomi.com>
115 lines
3.9 KiB
C
115 lines
3.9 KiB
C
/****************************************************************************
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* libs/libc/symtab/symtab_allsyms.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. 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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/allsyms.h>
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/****************************************************************************
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* Public Data
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****************************************************************************/
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extern const struct symtab_s g_allsyms[1];
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extern const int g_nallsyms;
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/****************************************************************************
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* Name: allsyms_lookup
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*
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* Description:
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* Find the symbol in the symbol table with the matching name.
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*
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* Returned Value:
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* A reference to the symbol table entry if an entry with the matching
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* name is found; NULL is returned if the entry is not found.
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*
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****************************************************************************/
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static FAR const struct symtab_s *
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allsyms_lookup(FAR const char *name, FAR void *value,
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FAR size_t *size)
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{
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FAR const struct symtab_s *symbol = NULL;
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if (name)
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{
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symbol = symtab_findbyname(g_allsyms, name, g_nallsyms);
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}
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else if (value)
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{
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symbol = symtab_findbyvalue(g_allsyms, value, g_nallsyms);
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}
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if (symbol && symbol != &g_allsyms[g_nallsyms - 1])
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{
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*size = (symbol + 1)->sym_value - symbol->sym_value;
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}
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else
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{
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*size = 0;
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}
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return symbol;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: allsyms_findbyname
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*
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* Description:
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* Find the symbol in the symbol table with the matching name.
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*
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* Returned Value:
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* A reference to the symbol table entry if an entry with the matching
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* name is found; NULL is returned if the entry is not found.
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*
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****************************************************************************/
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FAR const struct symtab_s *allsyms_findbyname(FAR const char *name,
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FAR size_t *size)
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{
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return allsyms_lookup(name, NULL, size);
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}
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/****************************************************************************
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* Name: symtab_findbyvalue
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*
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* Description:
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* Find the symbol in the symbol table whose value closest (but not greater
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* than), the provided value. This version assumes that table is not
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* ordered with respect to symbol value and, hence, access time will be
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* linear with respect to nsyms.
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*
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* Returned Value:
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* A reference to the symbol table entry if an entry with the matching
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* name is found; NULL is returned if the entry is not found.
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*
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****************************************************************************/
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FAR const struct symtab_s *allsyms_findbyvalue(FAR void *value,
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FAR size_t *size)
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{
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return allsyms_lookup(NULL, value, size);
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}
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