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nuttx/libc:Add _dl_find_object and dl_iterate_phdr function.

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Add _dl_find_object() function, because when cxx_exception configuration is enabled, a link error occurs and that function cannot be found.

ld: /usr/lib/gcc/x86_64-linux-gnu/13/libgcc_eh.a(unwind-dw2-fde-dip.o): in function `_Unwind_Find_FDE':
(.text+0x250c): undefined reference to `_dl_find_object'

Signed-off-by: cuiziwei <cuiziwei@xiaomi.com>
This commit is contained in:
cuiziwei
2024-05-08 19:31:13 +08:00
committed by Xiang Xiao
parent 8d7ee794f4
commit 036a0674db
4 changed files with 64 additions and 3 deletions
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libs/libc/dlfcn/CMakeLists.txt
+2 -1
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@@ -21,5 +21,6 @@
# ##############################################################################
if(CONFIG_LIBC_DLFCN)
target_sources(c PRIVATE lib_dlopen.c lib_dlclose.c lib_dlsym.c lib_dlerror.c
lib_dlsymtab.c lib_dladdr.c)
lib_dlsymtab.c)
endif()
target_sources(c PRIVATE lib_dlfind_object.c)
libs/libc/dlfcn/Make.defs
+4 -2
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@@ -27,9 +27,11 @@ ifeq ($(CONFIG_LIBC_DLFCN),y)
CSRCS += lib_dlopen.c lib_dlclose.c lib_dlsym.c lib_dlerror.c lib_dlsymtab.c
CSRCS += lib_dladdr.c
endif
CSRCS += lib_dlfind_object.c
# Add the dlfcn.h directory to the build
DEPPATH += --dep-path dlfcn
VPATH += :dlfcn
endif
libs/libc/dlfcn/lib_dlfind_object.c
+49
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@@ -0,0 +1,49 @@
/****************************************************************************
* libs/libc/dlfcn/lib_dlfind_object.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/compiler.h>
#include <stddef.h>
/****************************************************************************
* Private Type Declarations
****************************************************************************/
struct dl_find_object;
struct dl_phdr_info;
/****************************************************************************
* Public Functions
****************************************************************************/
int _dl_find_object(FAR void *address, FAR struct dl_find_object *result)
{
return -1;
}
int dl_iterate_phdr(CODE int (*callback)(FAR struct dl_phdr_info *info,
size_t size, FAR void *data),
FAR void *data)
{
return 0;
}