d75383400e
1.【需求描述】 动态库开发部分： gcc的sample code。 提供生成暴露接口生成机制，并允许产品新增需要暴露的接口。 提供可以判断库允许资源大小的能力，并提供相关工具辅助开发者确定开发的库要求的资源是否可以满足。 动态库运行部分： 提供elf load的api，可以加载指定路径下的库，并完成符号重映射等运行准备。 提供elf 暴露符号调用的api，用于调用库的api。 elf加载&链接异常时，有明确错误记录，返回明确错误类型。 提供elf 卸载的api。 2.【方案描述】 (1) 通过灌段的形式记录需要导出符号的地址信息，用于暴露内核对外的接口，在加载链接器中通过查询 对应的符号信息获取符号地址。 (2) 加载链接时，解析共享库并将共享库中可加载段通过文件系统读入内存中，并对共享库中未定义的、 需要重定位的符号进行重定位。需要调用符号时，根据符号名通过哈希表即可查询共享库提供的对应符号 的地址。 BREAKING CHANGE: 新增4个对外接口，声明在los_dynlink.h文件中，分别为： (1) LOS_DynlinkInit: 动态加载模块初始化。 (2) LOS_SoLoad: 加载指定路径的共享库。 (3) LOS_FindSym: 根据共享库句柄查找指定符号。 (4) LOS_SoUnload: 卸载共享库。 close #I418HJ Signed-off-by: Haryslee <lihao189@huawei.com> Change-Id: I7669b7ef20096294f9d1094c85ac6602fefad354
75 lines
2.9 KiB
Plaintext
75 lines
2.9 KiB
Plaintext
# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without modification,
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# are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice, this list of
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# conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice, this list
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# of conditions and the following disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# 3. Neither the name of the copyright holder nor the names of its contributors may be used
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# to endorse or promote products derived from this software without specific prior written
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# permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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import("config.gni")
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group("kernel") {
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deps = [
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"kernel:kernel",
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"utils:utils",
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"//third_party/bounds_checking_function:libsec_static",
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]
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if (enable_ohos_kernel_liteos_m_cppsupport == true) {
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deps += [ "components/cppsupport:cppsupport" ]
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}
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if (enable_ohos_kernel_liteos_m_cpup == true) {
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deps += [ "components/cpup:cpup" ]
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}
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if (enable_ohos_kernel_liteos_m_exchook == true) {
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deps += [ "components/exchook:exchook" ]
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}
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if (enable_ohos_kernel_liteos_m_backtrace == true) {
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deps += [ "components/backtrace:backtrace" ]
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}
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if (enable_ohos_kernel_liteos_m_fs == true) {
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deps += [ "components/fs:fs" ]
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}
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if (enable_ohos_kernel_liteos_m_pm == true) {
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deps += [ "components/power:pm" ]
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}
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if (enable_ohos_kernel_liteos_m_trace == true) {
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deps += [ "components/trace:trace" ]
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}
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if (enable_ohos_kernel_liteos_m_kal == true) {
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deps += [ "kal:kal" ]
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}
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if (enable_ohos_kernel_liteos_m_shell == true) {
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deps += [ "components/shell:shell" ]
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}
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if (enable_ohos_kernel_liteos_m_test == true) {
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deps += [ "testsuits:test" ]
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}
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if (enable_ohos_kernel_liteos_m_lwip == true) {
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deps += [ ohos_kernel_liteos_m_lwip_path ]
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}
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if (enable_ohos_kernel_liteos_m_dynlink == true) {
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deps += [ "components/dynlink:dynlink" ]
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}
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}
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