nuttx/libs/libc/modlib/Make.defs

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############################################################################
# libs/libc/modlib/Make.defs
#
# 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.
#
############################################################################
ifeq ($(CONFIG_LIBC_MODLIB),y)
# Add the nuttx/lib/modlib.h files to the build
CSRCS += modlib_bind.c modlib_depend.c modlib_init.c modlib_iobuffer.c
CSRCS += modlib_load.c modlib_loadhdrs.c modlib_verify.c
CSRCS += modlib_read.c modlib_registry.c modlib_sections.c
CSRCS += modlib_symbols.c modlib_symtab.c modlib_uninit.c modlib_unload.c
# Add the modlib directory to the build
Add support for the loading of ET_DYN objects * libs/libc/machine/arm/armv7-m/arch_elf.c - Fix cast of error message parameters * build-globals.sh - Build the modlib_globals.S file used to resolve symbols when dynamically loading * libs/libc/modlib/Make.defs - Build modlib_globals.S for all targets * libs/libc/modlib/modlib_load.c - Calculate sizes and text/data addresses based on program headers rather than section headers - Handle objects with no program headers * libs/libc/modlib/modlib_bind.c - Call modlib_readsym with pointer to symbol table - Add modlib_relocatedyn to manage relocation of symbols with shared object (ET_DYN) - Differentiate between ET_REL and ET_DYN objects - Use arch independent symbol ELF_R_SYM - Cast sizes to avoid warnings * libs/libc/modlib/modlib_load.c - Cast sizes to avoid warnings * include/elf.h - Add definitions that may be found in shared objects * include/nuttx/lib/modlib.h - Add parameter to modlib_readsym prototype - Add prototypes for: - modlib_insertsymtab - modlib_findglobal - Define Elf_Dyn and Elf_Off according to the elf architecture - Add fields to mod_loadifno_s: - Program headers - Exported symbols - Data section address - Padding requirement - Section index for dynamic symbol table - Number of symbols exported - Add prottotype for modlib_freesymtab * libs/libc/dlfcn/lib_dlclose.c - Free the symbol table when the dll is closed * libs/libc/dlfcn/lib_dlopen.c - Add dump of program headers to debug routine - Differentiate between ET_REL and ET_DYN objects * libs/libc/machine/arm/armv7-m/arch_elf.c - Add handling of R_ARM_RELATIVE and R_ARM_JUMP slot relocation types * libs/libc/modlib/modlib_loadshdrs.c - Rename modlib_loadshdrs.c to modlib_loadhdrs.c - Rename modlib_loadshdrs to modlib_loadhdrs - Add code to load program headers * libs/libc/modlib/modlib_symbols.c - Define entry point structure - Add offset parameter to modlib_symname() and use to find symbol names - Add symtab section header parameter to modlib_readsym() - Add offset parameter to modlib_symvalue() to locate symbol names - Add modlib_insertsyntab() to create a symbol table for exporting and resolution - Add findEP() to resolve a symbol in the modlib_global table - Add modlib_findglobal() to find symbol in the modlib_global table - Add modlib_freesymtab() to free the symbol table * libs/libc/modlib/modlib_uninit.c - Free header and sections from a module_loadinfo_s control block * libs/libc/modlib/modlib_verify.c - Handle ET_DYN shared objects * libs/libc/modlib/modlib_globals.S - Multi-target global table - Define library APIs that may be resolved when loading a shared object
2022-09-26 08:22:03 +02:00
ASRCS += modlib_globals.S
DEPPATH += --dep-path modlib
VPATH += :modlib
endif