针对字符串类高频函数：
1. 采用单次多字节操作提升字符串类高频函数的执行效率
2. 针对armv7-a，采用neon指令进行优化

close: #I42DAK
Signed-off-by: Narvinzzz <zhaotianyu9@huawei.com>
Change-Id: Ic90d92f778e0006881f793585264ad7e5f644104

Merge pull request !498 from pcwlno1/bbox_codex

1、判断安全函数的返回值。

Close #I43RQU
Signed-off-by: Npcwlno1 <qidechun@huawei.com>

Merge pull request !490 from Caoruihong/kernel_configs

for historical reason, the old config dir is used only for hcs_config
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I26f25d5ec81b4b4a0e96c30c3acb3f075107e19e

Merge pull request !485 from Caoruihong/liteipc_datasize

Merge pull request !488 from Caoruihong/unstripped_mksh_toybox

Merge pull request !479 from MGY917/toybox_strip_twice

Merge pull request !473 from MGY917/revert_wz

Merge pull request !473 from MGY917/revert_wz

stripped version used to pack rootfs image, unstripped
used for debug.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I07673238772d6995426ec8b1cff43f1abfea7049

Merge pull request !486 from 刘建东/master

enable gn build for lwip_enhanced

close: #I43GEW
Signed-off-by: Nliujiandong <liujiandong1@huawei.com>

use IPC_IO_DATA_MAX from liteipc_adapter.h
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I94f2dd2ff148e8a03ffb2c7b38ab06a34a2d2827

Merge pull request !471 from Harylee/mem

Merge pull request !476 from zhangfanfan2/master

Merge pull request !481 from lnlan/fix_mqueue_0730

Merge pull request !475 from Caoruihong/gn_build_apps

Merge pull request !480 from wangchen/a_codex

Merge pull request !394 from wcc/misc

Merge pull request !382 from guweijie/master

Merge pull request !463 from pcwlno1/bbox_bugfix_upload2

【背景】
mqueue用例压力测试中，会出现无法生成xml现象
【修改方案】
1. 确认是mq_close关闭时未清除用户态文件描述符相关位导致的，
添加清除步骤后，问题解决
【影响】
对现有的产品编译不会有影响。

re #I3ZQDA
Signed-off-by: Nlanleinan <lanleinan@163.com>
Change-Id: I8d467b361465f516ae7105bef38242bfd4805c60

【背景】定期A核代码告警清零。

【修改方案】
根据工具扫描结果，对代码告警进行更改。

【影响】
对现有的产品编译不会有影响。

re #I4378T
Signed-off-by: Nwangchen <253227059@qq.com>

toybox源码编译时，默认会进行strip操作，如下步骤：

//third_party/toybox/scripts/make.sh:340:
! do_loudly ${CROSS_COMPILE}${STRIP} "$UNSTRIPPED" -o "$OUTNAME"

因此在打包的Makefile中再进行STRIP操作是冗余的。

close #I43767

Change-Id: I10a9861b682eb8e556b7af7519c9109eef0b3a94
Signed-off-by: NGuangyao Ma <guangyao.ma@outlook.com>

close: #I434UC
Signed-off-by: Nzff <zhangfanfan2@huawei.com>
Change-Id: If6cdb719412375c79356a50113a0efb45c8968f7

1、允许用户自己指定预留物理内存的起始地址和长度。
2、在适配层中增加对预留物理内存的映射。
3、在bbox的Kcondfig中增加有关预留物理内存的编译选项。
4、在bbox的Makefile增加有关内存函数头文件的引用。

Close #I41YIZ
Signed-off-by: Npcwlno1 <qidechun@huawei.com>

toybox and mksh are built by gn now, and make build
for toybox and mksh are disabled now.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I46810ab418344d9841ec55cb9f1ad2dc2d15b008

之前修改窗口宽度，为了适配流水线。流水线已经完成自适应，建议回退回80宽度。一方
面，shell显示更友好。一方面，在tty完成前，也没有更好的处理方法。

close #I42X9V

This reverts commit 09c491ca.

Change-Id: I17a4f4804c4530ee5b95ebf547771768ef254842
Signed-off-by: NGuangyao Ma <guangyao.ma@outlook.com>

Merge pull request !470 from Caoruihong/isystem_std_inc

背景：解析脚本之前放在prebuilts目录下，该目录做了调整，该子目录下无合适的目录存放。
方案：将解析脚本移至内核tools目录下。

close #I42T9A
Signed-off-by: NHaryslee <lihao189@huawei.com>
Change-Id: I8b4af5df0cc9c9cd740fef8bd3092cf8d2bd1ec7

use -isystem cflags to use compiler's std include
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: If1f8e5d3bb8090397885fa1f35ae893e5d212565

Merge pull request !467 from Caoruihong/decouple_hdf_config

Merge pull request !462 from 王亚枫/master

Merge pull request !466 from Caoruihong/kconfiglib

optimize the public config template
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I0275b9a945ee87ca7893f8da6f30f9f5f65fa9ae

kconfiglib will be install by installing ohos-build
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I49a946fcea259155f3019ac6b6b3319c3a4cec47

Merge pull request !458 from Caoruihong/default_gn