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52482219c8
Renaming "modlib" to "libelf" is more in line with the implementation content, which makes it easier for individual developers to understand the capabilities of this module. CONFIG_LIBC_MODLIB -> CONFIG_LIBC_ELF Signed-off-by: chao an <anchao.archer@bytedance.com>
139 lines
3.6 KiB
Bash
Executable File
139 lines
3.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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############################################################################
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# tools/build-globals.sh
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#
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# SPDX-License-Identifier: Apache-2.0
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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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# Script to create elf_global.S which contains a structure define
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# the API names and addresses we will export for resolving symbols in
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# dynamic loaded shared objects. Typically these are libc APIs.
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#
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# Symbols to ignore within the NuttX libraries
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#
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FILTER="^lib_low|^FUNCTION|^STUB|^__start|^_vect|^arm_|^arp_|^bch|^binfmt|^blake|^block_|^cdcacm|^chksum|^clock_|^close_|^crypto_|^devif_|^devnull|^devuran|^devzero|^emerg|^epoll_|^elf_|^_dbgR|^dq_|^env_|^file_|^files_|^fs_|^ftl_|^g_|^get_|^group_|^global|^hcom|^i2c_|^inode_|^iob_|^irq_|^kmm_|^lfs_|^lib_|^local_|^mm_|^elf_|^mpu_|^mq_|^nglobals|^net_|^netdev_|^nx|^pipecommon|^posix_spawn_file|^psock_|^ramlog|^rammap|^readline_|^register_|^sched_|^sockfd|^spawn_|^sq_|^stm32|^symtab_|^syslog_|^syslogstream|^task_|^tcp_|^timer_|^uart_|^ub[12]|^udp_|^umm_|^umount|^unload_|^unregister|^up_|^usb|^usrsock_|^watchdog|^wd_|globalNames$|nglobals$|global_table$|^\.l"
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if [ -z "${NM}" ]; then
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NM="nm"
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fi
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#
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# Extract symbols from the runtime
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#
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SYMS=`cat System.map | awk '{print $3}' | sort | grep -Ev ${FILTER}`
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SYM=(${SYMS})
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GLOBALS="libs/libc/elf/elf_globals.S"
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#
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# Generate the elf_xxxx_globals.S file
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#
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cat >${GLOBALS} <<__EOF__
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#ifdef __CYGWIN__
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# define SYMBOL(s) _##s
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# define GLOBAL .global
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# define SECTION .data
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.macro GLOBAL ep
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.global SYMBOL(\ep)
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.type SYMBOL(\ep), "object"
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.endm
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.macro SIZE ep
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.endm
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#elif defined(__ELF__)
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# define SYMBOL(s) s
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# define SECTION .data
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.macro GLOBAL ep
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.global SYMBOL(\ep)
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.type SYMBOL(\ep), "object"
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.endm
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.macro SIZE ep
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.size SYMBOL(\ep), . - SYMBOL(\ep)
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.endm
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#else
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# define SYMBOL(s) _##s
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# define SECTION .section __DATA,__data
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.macro GLOBAL ep
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.private_extern SYMBOL(\ep)
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.globl SYMBOL(\ep)
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.endm
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.macro SIZE ep
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.endm
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#endif
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#if __SIZEOF_POINTER__ == 8
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.macro globalEntry index, ep
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.quad .l\index
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.quad \ep
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.endm
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# define ALIGN 8
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#else
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.macro globalEntry index, ep
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.long .l\index
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.long \ep
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.endm
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# define ALIGN 4
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#endif
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#ifdef __ARM_ARCH_ISA_THUMB2
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# ifdef __ARM_ARCH_7M__
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.arch armv7e-m
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# elif defined ___ARM_ARCH 8
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.arch armv8-m.base
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#endif
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#ifdef __ARM_ASM_SYNTAX_UNIFIED__
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.syntax unified
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#endif
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.thumb
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#endif
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.data
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.align ALIGN
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GLOBAL globalNames
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SYMBOL(globalNames):
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__EOF__
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for ((i = 0; i < ${#SYM[@]}; i++))
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do
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echo ".l${i}: .string \"${SYM[$i]}\"" >>${GLOBALS}
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done
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cat >>${GLOBALS} <<__EOF__
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SIZE globalNames
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.align ALIGN
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GLOBAL nglobals
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SYMBOL(nglobals):
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.word ${#SYM[@]}
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SIZE nglobals
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.align ALIGN
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GLOBAL global_table
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SYMBOL(global_table):
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__EOF__
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for ((i = 0; i < ${#SYM[@]}; i++))
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do
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echo " globalEntry ${i}, ${SYM[$i]}" >>${GLOBALS}
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done
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cat >>${GLOBALS} <<__EOF__
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SIZE global_table
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__EOF__
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echo "${#SYM[@]} symbols defined"
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