!248 fix: fix length typo

Merge pull request !248 from kenneth/los_queue.h

.gitee/PULL_REQUEST_TEMPLATE.zh-CN.md

@@ -1,6 +1,6 @@
 ### 相关的Issue
-    
-    
+
+  
 ### 原因（目的、解决的问题等）
 
 

.gitignore

@@ -1,23 +1,25 @@
-/out
-/test
-/include
-.config*
-cscope*
-tags
-.vscode
+# General ignored file types
 *.o
-.idea
-*.img
-*.swp
-*.rej
-*.orig
 *.a
 *.so
-.config.cmd
+*.swp
+
+# IDE settings
+.vscode
+.idea
 .settings
 .cproject
 .project
-platform/include/menuconfig.h
-platform/board.ld
-apps/init/init
-apps/shell/shell
+
+# VIM files
+cscope*
+tags
+
+# Menuconfig temp files
+/include/config
+/include/generated
+.config*
+
+# Build temp files
+/platform/board.ld
+/out

BUILD.gn

@@ -67,6 +67,7 @@ lite_subsystem("kernel") {
     }
   } else {
     deps = [ ":make" ]
+    deps += [ "//kernel/liteos_a/testsuites/unittest:unittest" ]
   }
 }
 

Kconfig

@@ -93,12 +93,28 @@ source "../../kernel/liteos_a/fs/ramfs/Kconfig"
 source "../../kernel/liteos_a/fs/nfs/Kconfig"
 source "../../kernel/liteos_a/fs/proc/Kconfig"
 source "../../kernel/liteos_a/fs/jffs2/Kconfig"
-source "../../kernel/liteos_a/fs/zpfs/Kconfig"
 config ENABLE_READ_BUFFER
     bool "Enable read buffer Option"
     default n
+    depends on FS_VFS
     help
       Answer Y to add enable read buffer Option.
+
+config MAX_VNODE_SIZE
+    int "Vnode max number"
+    range 0 512
+    default 512
+    depends on FS_VFS
+    help
+      vnode number, range from 0 to 512.
+
+config MAX_PATH_CACHE_SIZE
+    int "PathCache max number"
+    range 0 1024
+    default 512
+    depends on FS_VFS
+    help
+      pathCache number, range from 0 to 1024.
 endmenu
 
 ######################## config options of net ############################
@@ -121,6 +137,7 @@ config PLATFORM_ADAPT
 config ENABLE_OOM_LOOP_TASK
     bool "Enable Oom loop task"
     default n
+    depends on KERNEL_VM
     help
       Answer Y to enable oom loop kthread to check system out of memory.
 
@@ -148,6 +165,7 @@ config THUMB
     default n
     help
       Answer Y to build thumb version.  This will make LiteOS smaller.
+
 config PLATFORM_DVFS
     bool "Enable Dvfs"
     default n
@@ -156,6 +174,12 @@ config PLATFORM_DVFS
       Answer Y to enable LiteOS support dynamic voltage and frequency scaling feature for
       low power consumption.
 
+config SAVE_EXCINFO
+    bool "Enable Saving Exception Information"
+    default n
+    help
+      Answer Y to enable LiteOS support saving exception information to storage medium.
+
 config DEBUG_VERSION
     bool "Enable a Debug Version"
     default n
@@ -204,14 +228,6 @@ config NET_LWIP_SACK_TFTP
     help
       Answer Y to enable LiteOS support tftp cmd and tftp tool.
 source "../../kernel/liteos_a/net/telnet/Kconfig"
-config EXC_INTERACTION
-    bool "Enable exc interaction"
-    default n
-    depends on SHELL
-    help
-      Answer Y to enable exception interaction for LiteOS, when the system enter exception, user can also interact with system by shell
-      command like readreg, writereg,task,hwi.
-
 config SCHED_DEBUG
     bool "Enable sched debug Feature"
     default n
@@ -286,6 +302,7 @@ source "../../kernel/liteos_a/bsd/dev/usb/Kconfig"
 source "../../drivers/adapter/khdf/liteos/Kconfig"
 
 source "drivers/char/mem/Kconfig"
+source "drivers/char/quickstart/Kconfig"
 source "drivers/char/random/Kconfig"
 source "../../drivers/liteos/tzdriver/Kconfig"
 source "drivers/char/video/Kconfig"
@@ -297,6 +314,12 @@ menu "Security"
 source "../../kernel/liteos_a/security/Kconfig"
 endmenu
 
+menu "Test"
+config ENABLE_KERNEL_TEST
+    bool "Enable Kernel Test"
+    default n
+endmenu
+
 menu "Stack Smashing Protector (SSP) Compiler Feature"
 
 choice

Makefile

@@ -49,7 +49,6 @@ LITEOS_TARGET = liteos
 LITEOS_LIBS_TARGET = libs_target
 LITEOS_MENUCONFIG_H = $(LITEOSTOPDIR)/include/generated/autoconf.h
 LITEOS_PLATFORM_BASE = $(LITEOSTOPDIR)/platform
-LITEOS_PLATFORM_MENUCONFIG_H = $(LITEOS_PLATFORM_BASE)/include/menuconfig.h
 
 export CONFIG_=LOSCFG_
 MENUCONFIG_PATH = $(LITEOSTOPDIR)/tools/menuconfig
@@ -124,7 +123,7 @@ $(__LIBS): $(OUT) $(CXX_INCLUDE)
 $(OUT): $(LITEOS_MENUCONFIG_H)
 	$(HIDE)mkdir -p $(OUT)/lib
 	$(HIDE)$(CC) -I$(LITEOSTOPDIR)/kernel/base/include -I$(LITEOSTOPDIR)/../../$(LOSCFG_BOARD_CONFIG_PATH) \
-		-I$(LITEOS_PLATFORM_BASE)/include -E $(LITEOS_PLATFORM_BASE)/board.ld.S \
+		-I$(LITEOS_PLATFORM_BASE)/include -imacros $< -E $(LITEOS_PLATFORM_BASE)/board.ld.S \
 		-o $(LITEOS_PLATFORM_BASE)/board.ld -P
 
 $(BUILD):
@@ -144,11 +143,10 @@ genconfig:$(MENUCONFIG_CONF)
 	$(HIDE)mkdir -p include/config include/generated
 	$< --olddefconfig $(KCONFIG_FILE_PATH)
 	$< --silentoldconfig $(KCONFIG_FILE_PATH)
-	-mv -f $(LITEOS_MENUCONFIG_H) $(LITEOS_PLATFORM_MENUCONFIG_H)
 ##### menuconfig end #######
 
 $(LITEOS_MENUCONFIG_H):
-ifneq ($(LITEOS_PLATFORM_MENUCONFIG_H), $(wildcard $(LITEOS_PLATFORM_MENUCONFIG_H)))
+ifneq ($(LITEOS_MENUCONFIG_H), $(wildcard $(LITEOS_MENUCONFIG_H)))
 	$(HIDE)$(MAKE) genconfig
 endif
 $(LITEOS_TARGET): $(__LIBS)
@@ -182,18 +180,14 @@ endif
 
 $(ROOTFSDIR): prepare $(APPS)
 	$(HIDE)$(MAKE) clean -C apps
-	$(HIDE)$(LITEOSTOPDIR)/tools/scripts/make_rootfs/rootfsdir.sh $(OUT)/bin $(OUT)/musl $(ROOTFS_DIR)
+	$(HIDE)$(LITEOSTOPDIR)/tools/scripts/make_rootfs/rootfsdir.sh $(OUT)/bin $(OUT)/musl $(ROOTFS_DIR) $(LITEOS_TARGET_DIR)
 ifneq ($(VERSION),)
-	$(HIDE)$(LITEOSTOPDIR)/tools/scripts/make_rootfs/releaseinfo.sh "$(VERSION)" $(ROOTFS_DIR)
+	$(HIDE)$(LITEOSTOPDIR)/tools/scripts/make_rootfs/releaseinfo.sh "$(VERSION)" $(ROOTFS_DIR) $(LITEOS_TARGET_DIR)
 endif
 
 $(ROOTFS): $(ROOTFSDIR)
 	$(HIDE)$(LITEOSTOPDIR)/tools/scripts/make_rootfs/rootfsimg.sh $(ROOTFS_DIR) $(FSTYPE)
 	$(HIDE)cd $(ROOTFS_DIR)/.. && zip -r $(ROOTFS_ZIP) $(ROOTFS)
-ifneq ($(OUT), $(LITEOS_TARGET_DIR))
-	rm -rf $(LITEOS_TARGET_DIR)rootfs
-	$(HIDE)mv $(ROOTFS_DIR) $(LITEOS_TARGET_DIR)rootfs
-endif
 
 clean:
 	$(HIDE)for dir in $(LITEOS_SUBDIRS); \
@@ -201,16 +195,13 @@ clean:
 	done
 	$(HIDE)$(MAKE) -C apps clean
 	$(HIDE)$(RM) $(__OBJS) $(LITEOS_TARGET) $(BUILD) $(LITEOS_MENUCONFIG_H) *.bak *~
-	$(HIDE)$(RM) $(LITEOS_PLATFORM_MENUCONFIG_H)
-	$(HIDE)$(RM) include
+	$(HIDE)$(RM) include/config include/generated
 	$(HIDE)$(MAKE) cleanrootfs
 	$(HIDE)echo "clean $(LITEOS_PLATFORM) finish"
 
-cleanall:
-	$(HIDE)$(RM) $(LITEOSTOPDIR)/out
-	$(HIDE)find $(LITEOS_PLATFORM_BASE)/ -name board.ld -exec rm -rf {} \;
-	$(HIDE)cd sample/sample_osdrv;make clean;cd ../..;
-	$(HIDE)echo "clean all"
+cleanall: clean
+	$(HIDE)$(RM) $(LITEOSTOPDIR)/out $(LITEOS_PLATFORM_BASE)/board.ld
+	$(HIDE)echo "clean all done"
 
 cleanrootfs:
 	$(HIDE)$(RM) $(OUT)/rootfs

README_zh-HK.md

@@ -0,0 +1,97 @@
+# LiteOS-A內核<a name="ZH-CN_TOPIC_0000001096612501"></a>
+
+- [簡介](#section11660541593)
+- [目錄](#section161941989596)
+- [約束](#section119744591305)
+- [使用說明](#section741617511812)
+    - [準備](#section1579912573329)
+    - [獲取源碼](#section11443189655)
+    - [編譯構建](#section2081013992812)
+
+- [相關倉](#section1371113476307)
+
+## 簡介<a name="section11660541593"></a>
+
+OpenHarmony LiteOS-A內核是基於Huawei LiteOS內核演進發展的新一代內核，Huawei LiteOS是面向IoT領域構建的輕量級物聯網操作系統。在IoT產業高速發展的潮流中，OpenHarmony LiteOS-A內核能夠帶給用戶小體積、低功耗、高性能的體驗以及統一開放的生態系統能力，新增了豐富的內核機制、更加全面的POSIX標準接口以及統一驅動框架**HDF**（OpenHarmony Driver Foundation）等，為設備廠商提供了更統一的接入方式，為OpenHarmony的應用開發者提供了更友好的開發體驗。圖1為OpenHarmony LiteOS-A內核架構圖：
+
+**圖 1** OpenHarmony LiteOS-A內核架構圖<a name="fig27311582210"></a>
+![](figures/OpenHarmony-LiteOS-A內核架構圖.png "OpenHarmony-LiteOS-A內核架構圖")
+
+## 目錄<a name="section161941989596"></a>
+
+```
+/kernel/liteos_a
+├── apps # 用戶態的init和shell應用程序
+├── arch # 體系架構的目錄，如arm等
+│ └── arm # arm架構代碼
+├── bsd # freebsd相關的驅動和適配層模塊代碼引入，例如USB等
+├── compat # 內核接口兼容性目錄
+│ └── posix # posix相關接口
+├── drivers # 內核驅動
+│ └── char # 字符設備
+│ ├── mem # 訪問物理IO設備驅動
+│ ├── quickstart # 系統快速啟動接口目錄
+│ ├── random # 隨機數設備驅動
+│ └── video # framebuffer驅動框架
+├── fs # 文件系統模塊，主要來源於NuttX開源項目
+│ ├── fat # fat文件系統
+│ ├── jffs2 # jffs2文件系統
+│ ├── include # 對外暴露頭文件存放目錄
+│ ├── nfs # nfs文件系統
+│ ├── proc # proc文件系統
+│ ├── ramfs # ramfs文件系統
+│ └── vfs # vfs層
+├── kernel # 進程、內存、IPC等模塊
+│ ├── base # 基礎內核，包括調度、內存等模塊
+│ ├── common # 內核通用組件
+│ ├── extended # 擴展內核，包括動態加載、vdso、liteipc等模塊
+│ ├── include # 對外暴露頭文件存放目錄
+│ └── user # 加載init進程
+├── lib # 內核的lib庫
+├── net # 網絡模塊，主要來源於lwip開源項目
+├── platform # 支持不同的芯片平台代碼，如Hi3516DV300等
+│ ├── hw # 時鐘與中斷相關邏輯代碼
+│ ├── include # 對外暴露頭文件存放目錄
+│ └── uart # 串口相關邏輯代碼
+├── platform # 支持不同的芯片平台代碼，如Hi3516DV300等
+├── security # 安全特性相關的代碼，包括進程權限管理和虛擬id映射管理
+├── syscall # 系統調用
+└── tools # 構建工具及相關配置和代碼
+```
+
+## 約束<a name="section119744591305"></a>
+
+- 開發語言：C/C++；
+- 適用於Hi3518EV300、Hi3516DV300單板；
+- Hi3518EV300默認使用jffs2文件系統，Hi3516DV300默認使用FAT文件系統。
+
+## 使用說明<a name="section741617511812"></a>
+
+OpenHarmony LiteOS-A內核支持Hi3518EV300（[介紹](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/Hi3518%E5%BC%80%E5% 8F%91%E6%9D%BF%E4%BB%8B%E7%BB%8D.md)）、Hi3516DV300（[介紹](https://gitee.com/openharmony/docs/blob/master/zh- cn/device-dev/quick-start/Hi3516%E5%BC%80%E5%8F%91%E6%9D%BF%E4%BB%8B%E7%BB%8D.md)）單板，開發者可基於兩種單板開發運行自己的應用程序。
+
+### 準備<a name="section1579912573329"></a>
+
+開發者需要在Linux上搭建編譯環境：
+
+- Hi3518EV300單板：參考[環境搭建](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/%E6%90%AD%E5%BB% BA%E7%8E%AF%E5%A2%83.md)；
+- Hi3516DV300單板：參考[環境搭建](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/Hi3516%E6%90%AD%E5%BB %BA%E7%8E%AF%E5%A2%83.md)。
+
+### 獲取源碼<a name="section11443189655"></a>
+
+在Linux服務器上下載並解壓一套源代碼，獲取源碼（[下載鏈結](https://repo.huaweicloud.com/harmonyos/os/1.0.1/code-1.0.1.tar.gz)）。更多源碼獲取方式，參考[源碼獲取](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/get-code/%E6%BA%90%E7%A0 %81%E8%8E%B7%E5%8F%96.md)。
+
+### 編譯構建<a name="section2081013992812"></a>
+
+開發者開發第一個應用程序可參考：
+
+- [helloworld for Hi3518EV300](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/%E5%BC%80%E5%8F%91Hi3518%E7% AC%AC%E4%B8%80%E4%B8%AA%E7%A4%BA%E4%BE%8B%E7%A8%8B%E5%BA%8F.md)；
+
+- [helloworld for Hi3516DV300](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/%E5%BC%80%E5%8F%91Hi3516%E7% AC%AC%E4%B8%80%E4%B8%AA%E5%BA%94%E7%94%A8%E7%A8%8B%E5%BA%8F%E7%A4%BA%E4%BE% 8B.md)。
+
+## 相關倉<a name="section1371113476307"></a>
+
+[內核子系統](https://gitee.com/openharmony/docs/blob/master/zh-cn/readme/%E5%86%85%E6%A0%B8%E5%AD%90%E7%B3 %BB%E7%BB%9F.md)
+
+[drivers\_liteos](https://gitee.com/openharmony/drivers_liteos/blob/master/README_zh.md)
+
+**kernel\_liteos\_a** 

TODOList.md

@@ -0,0 +1,61 @@
+- liteos_m易用性
+	- [ ] liteos_m开发者手册
+	- [ ] 低功耗框架及实现（含投票机制）
+	- [ ] dump增强（配套解析工具）
+	- [ ] 全内存dump（配套解析工具）
+	- [ ] 实现完整L0 OHOS的qemu仿真
+	- [ ] Shell + AT
+
+- liteos_m能力增强
+	- [ ] liteos_m支持elf动态加载
+	- [ ] 基于MPU/PMP的多任务简化隔离
+	- [ ] 基于MPU/PMP的多BIN隔离及灌段隔离
+	- [ ] 扩展支持中断嵌套
+	- [ ] 支持arm9架构
+	- [ ] 支持xtensa架构
+
+- 文件系统增强
+	- [ ] 提供一种好用且开源的NandFlash文件系统
+	- [ ] 面向fat32、jffs2持续性能优化，做到极致
+	- [ ] fat32支持fast seek（现有fast seek限制文件扩展，需要改造）
+	- [ ] 支持软链接
+	- [ ] 头文件引用关系整理
+	- [ ] 接口层去nuttx
+	- [ ] 文件系统去大锁
+
+- liteos_a支持三方芯片易移植性
+	- [ ] 启动框架重构
+	- [ ] musl库归一化
+	- [ ] 去C库预编译
+	- [ ] 宏配置依赖关系整理
+	- [ ] 典型商用配置场景整理并导入门禁（1V1映射，去缺页，去隔离，单进程等等）
+	- [ ] 编译框架整合到gn
+	- [ ] 实现基于python的kconfig可视化配置
+
+- liteos_a易用性
+	- [ ] 实现L1 LiteOS-A及上层鸿蒙组件的qemu仿真
+	- [ ] liteos_a开发者手册
+	- [ ] mksh移植
+	- [ ] toybox命令集
+	- [ ] trace、backtrace、dump解析工具等
+	- procfs适配
+		- [ ] ifconfig、fd、free等
+
+- liteos_a能力增强
+	- [ ] 单链表整改（SMP多核性能）
+	- [ ] 快启
+	- [ ] 典型高频函数C库性能优化
+	- [ ] rwlock
+
+- liteos_a三方库移植
+	- [ ] libuv、dlna、benchmark、iperf、perf、tcpdump 等等
+	-  C库能力补全
+		- [ ] epoll实现 
+
+- 测试验证
+	- [ ] syzkaller、difuze等
+
+- 探索性课题
+	- [ ] 基于rust重写liteos_m基础内核
+	- [ ] 用户态驱动（对比业界并增强）
+	- [ ] 用户态文件系统

apps/Makefile

@@ -27,7 +27,10 @@
 # OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-include ../.config
+LITEOSTOPDIR = $(shell pwd)/../
+
+include $(LITEOSTOPDIR)/.config
+include ./config.mk
 include ./module.mk
 
 HIDE := @

apps/config.mk

@@ -37,7 +37,7 @@ LIBSOUT := $(OBJOUT)/libs
 IMGOUT  := $(OUT)
 
 # common flags config
-BASE_OPTS := -ffunction-sections -fdata-sections -fno-omit-frame-pointer -fno-common -fno-strict-aliasing -D_GNU_SOURCE \
+BASE_OPTS := -ffunction-sections -fdata-sections -fno-omit-frame-pointer -D_GNU_SOURCE \
              $(LITEOS_SSP) $(LITEOS_CORE_COPTS) $(WARNING_AS_ERROR) $(LLVM_EXTRA_OPTS) $(LITEOS_GCOV_OPTS)
 
 CFLAGS := -std=c99 -fno-exceptions $(BASE_OPTS) $(LITEOS_COPTS_OPTMIZE)
@@ -55,6 +55,6 @@ COMMON_INCLUDE := -I $(LITEOSTHIRDPARTY)/bounds_checking_function/include
 # alias variable config
 HIDE := @
 MAKE := make
-RM := -rm -rf
-CP := -cp -rf
-MV := -mv
+RM := rm -rf
+CP := cp -rf
+MV := mv -f

apps/init/src/init.c

@@ -49,7 +49,7 @@
 int main(int argc, char * const *argv)
 {
     int ret;
-    const char *shellPath = "/bin/shell";
+    const char *shellPath = "/bin/mksh";
 
 #ifdef LOSCFG_QUICK_START
     const char *samplePath = "/dev/shm/sample_quickstart";
@@ -74,6 +74,11 @@ int main(int argc, char * const *argv)
     if (ret < 0) {
         printf("Failed to fork for shell\n");
     } else if (ret == 0) {
+        ret = tcsetpgrp(STDIN_FILENO, getpgrp());
+        if (ret != 0) {
+            printf("tcsetpgrp failed, pgrpid %d, errno %d\n", getpgrp(), errno);
+            exit(0);
+        }
         (void)execve(shellPath, NULL, NULL);
         exit(0);
     }

apps/mksh/Makefile

@@ -0,0 +1,67 @@
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this list of
+#    conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+#    of conditions and the following disclaimer in the documentation and/or other materials
+#    provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors may be used
+#    to endorse or promote products derived from this software without specific prior written
+#    permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+MKSH := mksh
+
+MKSH_DIR := $(shell pwd)/
+LITEOSTOPDIR = $(MKSH_DIR)/../../
+include $(MKSH_DIR)/../config.mk
+
+APPS_OUT := $(OUT)/bin
+BUILD_DIR := $(MKSH_DIR)/build
+BUILD_LOG := $(MKSH_DIR)/build.log
+TARGET_OS := OpenHarmony
+
+LOCAL_CFLAGS := -flto -fdata-sections -ffunction-sections -O2 -fstack-protector-strong -D_FORTIFY_SOURCE=2 -mcpu=cortex-a7 -mfloat-abi=softfp -mfpu=neon-vfpv4
+LOCAL_CFLAGS += --target=arm-liteos --sysroot=$(LITEOSTOPDIR)/../../prebuilts/lite/sysroot/
+LOCAL_CFLAGS += -DMKSH_DISABLE_TTY_WARNING -DMKSH_SMALL=1 -DMKSH_ASSUME_UTF8=1 -DMKSH_SMALL_BUT_FAST=0 -DMKSH_S_NOVI=1 -DHAVE_CAN_FSTACKPROTECTORSTRONG=1
+LOCAL_CFLAGS += -DMKSH_LESS_CMDLINE_EDITING -DMKSH_LESS_BUILDINS -DMKSH_NO_INITCOMS -DADAPT_FOR_LITEOS_A
+
+all:$(MKSH)
+
+$(MKSH):
+ifneq ($(wildcard $(BUILD_DIR)/Rebuild.sh),)
+	$(HIDE)echo "not clean, rebuilding now"
+	$(HIDE)chmod +x $(BUILD_DIR)/Rebuild.sh
+	$(HIDE)cd $(BUILD_DIR) && ./Rebuild.sh > $(BUILD_LOG) 2>&1
+else
+	$(HIDE)mkdir -p $(BUILD_DIR)
+	$(HIDE)$(CP) $(LITEOSTHIRDPARTY)/$(MKSH)/. $(BUILD_DIR)
+	$(HIDE)chmod +x $(BUILD_DIR)/Build.sh
+	$(HIDE)cd $(BUILD_DIR) && CC=$(CC) TARGET_OS=$(TARGET_OS) CFLAGS="$(LOCAL_CFLAGS)" LDFLAGS="$(LDFLAGS)" ./Build.sh -r > $(BUILD_LOG) 2>&1
+endif
+	$(HIDE)$(CP) -rf $(BUILD_DIR)/$(MKSH) .
+	$(HIDE)$(STRIP) $(MKSH)
+	$(HIDE)mkdir -p $(APPS_OUT)
+	$(HIDE)$(CP) $(MKSH) $(APPS_OUT)
+
+clean:
+	$(HIDE)$(RM) $(MKSH) $(BUILD_DIR) $(BUILD_LOG)
+
+.PHONY: all $(MKSH) clean

apps/module.mk

@@ -29,7 +29,7 @@
 
 APP_SUBDIRS :=
 
-##compile modules config##
+##build modules config##
 
 ifeq ($(LOSCFG_SHELL), y)
 APP_SUBDIRS += shell
@@ -42,3 +42,11 @@ endif
 ifeq ($(LOSCFG_NET_LWIP_SACK_TFTP), y)
 APP_SUBDIRS += tftp
 endif
+
+#only enable for qemu now
+ifeq ($(LOSCFG_PLATFORM_QEMU_ARM_VIRT_CA7), y)
+APP_SUBDIRS += mksh
+ifeq ($(WHEN_TOYBOX_IS_READY), y)
+APP_SUBDIRS += toybox
+endif
+endif

apps/shell/builtin/cd.c

@@ -37,11 +37,6 @@
 #include "shcmd.h"
 #include "sherr.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 int Chdir(const char *tgtDir)
 {
@@ -53,17 +48,9 @@ int Chdir(const char *tgtDir)
 
     ret = chdir(tgtDir);
     if (ret == 0) {
-        ret = OsShellSetWorkingDirtectory(tgtDir, strlen(tgtDir) + 1); /* 1: the length of '\0' */
-        if (ret != SH_NOK) {
-            return ret;
-        }
+        ret = OsShellSetWorkingDirtectory(tgtDir, strlen(tgtDir) + 1); /* 1: the length of '\0' */        
     }
 
     return ret;
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif
-#endif

apps/shell/include/shell_list.h

@@ -350,35 +350,14 @@ static inline void SH_ListHeadInsertList(SH_List *oldList, SH_List *newList)
  * <li>None.</li>
  * </ul>
  *
- * @param type   [IN] Structure name.
- * @param field  [IN] Name of the field of which the offset is to be measured.
+ * @param type    [IN] Structure name.
+ * @param member  [IN] Name of the member of which the offset is to be measured.
  *
  * @retval Offset of the field to the structure address.
  * @par Dependency:
  * <ul><li>shell_list.h: the header file that contains the API declaration.</li></ul>
  * @see
  */
-#define OFFSET_OF_FIELD(type, field) ((uintptr_t)&((type *)0)->field)
-
-/**
- * @ingroup shell_list
- * @brief Obtain the pointer to a doubly linked list in a structure.
- *
- * @par Description:
- * This API is used to obtain the pointer to a doubly linked list in a structure.
- * @attention
- * <ul>
- * <li>None.</li>
- * </ul>
- *
- * @param type    [IN] Structure name.
- * @param member  [IN] Member name of the doubly linked list in the structure.
- *
- * @retval Pointer to the doubly linked list in the structure.
- * @par Dependency:
- * <ul><li>shell_list.h: the header file that contains the API declaration.</li></ul>
- * @see
- */
 #define LOS_OFF_SET_OF(type, member) ((uintptr_t)&((type *)0)->member)
 
 /**

apps/shell/src/main.c

@@ -36,11 +36,6 @@
 #include "securec.h"
 #include "unistd.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 ShellCB *g_shellCB = NULL;
 
@@ -139,8 +134,3 @@ ERR_OUT1:
     return ret;
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif
-#endif

apps/shell/src/shcmd.c

@@ -36,11 +36,6 @@
 #include "dirent.h"
 #include "securec.h"
 
-#ifdef  __cplusplus
-#if  __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 #define SHELL_INIT_MAGIC_FLAG 0xABABABAB
 #define CTRL_C 0x03 /* 0x03: ctrl+c ASCII */
@@ -85,7 +80,7 @@ static int OsStrSeparateTabStrGet(const char **tabStr, CmdParsed *parsed, unsign
     if ((strlen(shiftStr) == 0) || (tempStr[strlen(tempStr) - 1] != shiftStr[strlen(shiftStr) - 1])) {
         *tabStr = "";
     } else {
-        if (OsCmdTokenSplit(shiftStr, ' ', parsed)) {
+        if (OsCmdParse(shiftStr, parsed)) {
             free(tempStr);
             return (int)SH_ERROR;
         }
@@ -201,7 +196,7 @@ static int OsSurePrintAll(unsigned int count)
     char readChar = 0;
     printf("\nDisplay all %u possibilities?(y/n)", count);
     while (1) {
-        if (read(0, &readChar, 1) != 1) {
+        if (read(STDIN_FILENO, &readChar, 1) != 1) {
             return (int)SH_ERROR;
         }
         if ((readChar == 'n') || (readChar == 'N') || (readChar == CTRL_C)) {
@@ -453,20 +448,15 @@ unsigned int OsCmdKeyShift(const char *cmdKey, char *cmdOut, unsigned int size)
     free(outputBak);
     return SH_OK;
 }
+
 int OsTabCompletion(char *cmdKey, unsigned int *len)
 {
     int count;
-    char *cmdMainStr = cmdKey;
 
     if ((cmdKey == NULL) || (len == NULL)) {
         return (int)SH_ERROR;
     }
 
-    /* cut left space */
-    while (*cmdMainStr == 0x20) {
-        cmdMainStr++;
-    }
-
     count = OsTabMatchFile(cmdKey, len);
 
     return count;
@@ -604,8 +594,3 @@ unsigned int OsCmdExec(CmdParsed *cmdParsed, char *cmdStr)
     return ret;
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif
-#endif

apps/shell/src/shcmdparse.c

@@ -32,11 +32,6 @@
 #include "shcmd.h"
 #include "sherr.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 /*
  * Filter out double quote or single-quoted strings at both ends
@@ -157,8 +152,3 @@ unsigned int OsCmdParse(char *cmdStr, CmdParsed *cmdParsed)
     return OsCmdTokenSplit(cmdStr, ' ', cmdParsed);
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif
-#endif

apps/shell/src/shmsg.c

@@ -42,11 +42,6 @@
 #include "shell_pri.h"
 #include "shcmd.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 
 char *GetCmdline(ShellCB *shellCB)
@@ -350,6 +345,11 @@ static void DoCmdExec(const char *cmdName, const char *cmdline, unsigned int len
                 exit(1);
             }
 
+            ret = tcsetpgrp(STDIN_FILENO, getpgrp());
+            if (ret != 0) {
+                printf("tcsetpgrp failed, pgrpid %d, errno %d\n", getpgrp(), errno);
+            }
+
             ret = execve((const char *)cmdParsed->paramArray[0], (char * const *)cmdParsed->paramArray, NULL);
             if (ret == -1) {
                 perror("execve");
@@ -577,7 +577,7 @@ int ShellTaskInit(ShellCB *shellCB)
 
 static int ShellKernelReg(unsigned int shellHandle)
 {
-    return ioctl(0, CONSOLE_CONTROL_REG_USERTASK, shellHandle);
+    return ioctl(STDIN_FILENO, CONSOLE_CONTROL_REG_USERTASK, shellHandle);
 }
 
 void *ShellEntry(void *argv)
@@ -640,8 +640,3 @@ int ShellEntryInit(ShellCB *shellCB)
     return ret;
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif
-#endif

apps/toybox/Makefile

@@ -0,0 +1,59 @@
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this list of
+#    conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+#    of conditions and the following disclaimer in the documentation and/or other materials
+#    provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors may be used
+#    to endorse or promote products derived from this software without specific prior written
+#    permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+TOYBOX:= toybox
+
+TOYBOX_DIR := $(shell pwd)
+LITEOSTOPDIR = $(TOYBOX_DIR)/../../
+include $(TOYBOX_DIR)/../config.mk
+
+APPS_OUT := $(OUT)/bin
+BUILD_DIR := $(TOYBOX_DIR)/build
+BUILD_LOG := $(TOYBOX_DIR)/build.log
+OUTNAME := $(TOYBOX)
+
+$(TOYBOX):
+ifneq ($(wildcard $(BUILD_DIR)),)
+	$(HIDE)echo "not clean, rebuilding now";
+else
+	$(HIDE)mkdir $(BUILD_DIR)
+	$(HIDE)$(CP) $(LITEOSTHIRDPARTY)/$(TOYBOX)/. $(BUILD_DIR)
+endif
+	$(HIDE)CFLAGS="-D_FORTIFY_SOURCE=2 -fstack-protector-strong --target=arm-liteos \
+	--sysroot=$(LITEOSTOPDIR)/../../prebuilts/lite/sysroot/" CC="$(CC)" OUTNAME=$(OUTNAME) \
+	make -C $(BUILD_DIR) toybox -j> $(BUILD_LOG) 2>&1
+	$(HIDE)$(CP) $(BUILD_DIR)/$(TOYBOX) .
+	$(HIDE)$(STRIP) $(TOYBOX)
+	$(HIDE)mkdir -p $(APPS_OUT)
+	$(HIDE)$(CP) $(TOYBOX) $(APPS_OUT)
+
+clean:
+	$(HIDE)$(RM) $(TOYBOX) $(BUILD_DIR) $(BUILD_LOG)
+
+.PHONY: all $(TOYBOX) clean

arch/arm/Kconfig

@@ -75,3 +75,29 @@ config ARCH_CORTEX_A7
 config ARCH_CPU
     string
     default "cortex-a7" if ARCH_CORTEX_A7
+
+#
+# Supported GIC version
+#
+
+choice
+    prompt "GIC version"
+    default ARCH_GIC_V2
+    help
+      Interrupt Controller.
+
+config ARCH_GIC_V2
+    bool "GIC Version 2"
+    help
+      This GIC(General Interrupt Controller) version 2 driver is compatatble with
+      GIC version 1 and version 2.
+
+config ARCH_GIC_V3
+    bool "GIC Version 3"
+    depends on ARCH_ARM_V8A || ARCH_ARM_V8R
+    help
+      General Interrupt Controller version 3.
+
+endchoice
+
+

arch/arm/arm.mk

@@ -42,7 +42,10 @@ LITEOS_ARCH_ARM         :=
 endif
 
 LITEOS_BASELIB          += -l$(LOSCFG_ARCH_CPU)
+LITEOS_BASELIB          += -lgic
+
 LIB_SUBDIRS             += arch/arm/$(LITEOS_ARCH_ARM)
+LIB_SUBDIRS             += arch/arm/gic
 
 # CPU compile options
 ifeq ($(LOSCFG_ARCH_ARM_AARCH64), y)

arch/arm/arm/include/arch_config.h

@@ -32,7 +32,6 @@
 #ifndef _ARCH_CONFIG_H
 #define _ARCH_CONFIG_H
 
-#include "menuconfig.h"
 
 #define CPSR_INT_DISABLE         0xC0 /* Disable both FIQ and IRQ */
 #define CPSR_IRQ_DISABLE         0x80 /* IRQ disabled when =1 */

arch/arm/arm/include/arm.h

@@ -36,10 +36,6 @@
 #define CPSR_MODE_USR  0x10
 #define CPSR_MODE_MASK 0x1f
 
-#define DSB __asm__ volatile("dsb" ::: "memory")
-#define ISB __asm__ volatile("isb" ::: "memory")
-#define DMB __asm__ volatile("dmb" ::: "memory")
-
 STATIC INLINE UINT32 OsArmReadSctlr(VOID)
 {
     UINT32 val;

arch/arm/arm/include/hal_timer.h

@@ -45,7 +45,6 @@ extern VOID HalClockIrqClear(VOID);
 extern VOID HalClockInit(VOID);
 extern UINT64 HalClockGetCycles(VOID);
 extern VOID HalDelayUs(UINT32 usecs);
-extern UINT64 hi_sched_clock(VOID);
 extern UINT32 HalClockGetTickTimerCycles(VOID);
 extern VOID HalClockTickTimerReload(UINT64 cycles);
 

arch/arm/arm/include/los_hw_cpu.h

@@ -51,6 +51,7 @@ extern "C" {
 #define DSB     __asm__ volatile("dsb" ::: "memory")
 #define DMB     __asm__ volatile("dmb" ::: "memory")
 #define ISB     __asm__ volatile("isb" ::: "memory")
+#define WFI     __asm__ volatile("wfi" ::: "memory")
 #define BARRIER __asm__ volatile("":::"memory")
 
 #define ARM_SYSREG_READ(REG)                    \
@@ -188,6 +189,24 @@ STATIC INLINE UINT32 ArchIntUnlock(VOID)
     return intSave;
 }
 
+STATIC INLINE VOID ArchIrqDisable(VOID)
+{
+    __asm__ __volatile__(
+        "cpsid  i      "
+        :
+        :
+        : "memory", "cc");
+}
+
+STATIC INLINE VOID ArchIrqEnable(VOID)
+{
+    __asm__ __volatile__(
+        "cpsie  i      "
+        :
+        :
+        : "memory", "cc");
+}
+
 #else
 
 STATIC INLINE UINT32 ArchIntLock(VOID)

arch/arm/arm/include/los_tlb_v6.h

@@ -37,7 +37,6 @@
 #define __LOS_TLB_V6_H__
 
 #include "los_typedef.h"
-#include "menuconfig.h"
 #include "arm.h"
 
 #ifdef __cplusplus

arch/arm/arm/src/arm_generic_timer.c

@@ -162,7 +162,7 @@ VOID HalDelayUs(UINT32 usecs)
     }
 }
 
-UINT64 hi_sched_clock(VOID)
+DEPRECATED UINT64 hi_sched_clock(VOID)
 {
     return LOS_CurrNanosec();
 }

arch/arm/arm/src/include/los_exc_pri.h

@@ -40,11 +40,6 @@ extern "C" {
 #endif /* __cplusplus */
 #endif /* __cplusplus */
 
-STATIC INLINE VOID OsSetCurrCpuSp(UINTPTR regSp)
-{
-    __asm__ __volatile__("mov sp, %0" :: "r"(regSp));
-}
-
 #define OS_SYSTEM_NORMAL        0
 #define OS_SYSTEM_EXC_CURR_CPU  1
 #define OS_SYSTEM_EXC_OTHER_CPU 2

arch/arm/arm/src/include/los_hw_pri.h

@@ -34,8 +34,7 @@
 
 #include "los_base.h"
 #include "los_hw.h"
-#include "los_process_pri.h"
-#include "los_signal.h"
+
 #ifdef __cplusplus
 #if __cplusplus
 extern "C" {
@@ -56,23 +55,44 @@ typedef struct {
     UINT32 regFPSCR;       /* FPSCR */
     UINT32 regFPEXC;       /* FPEXC */
 #endif
-    UINT32 resved;          /* It's stack 8 aligned */
-    UINT32 regPSR;
-    UINT32 R[GEN_REGS_NUM]; /* R0-R12 */
-    UINT32 SP;              /* R13 */
-    UINT32 LR;              /* R14 */
-    UINT32 PC;              /* R15 */
+    UINT32 R4;
+    UINT32 R5;
+    UINT32 R6;
+    UINT32 R7;
+    UINT32 R8;
+    UINT32 R9;
+    UINT32 R10;
+    UINT32 R11;
+
+    /* It has the same structure as IrqContext */
+    UINT32 reserved2; /**< Multiplexing registers, used in interrupts and system calls but with different meanings */
+    UINT32 reserved1; /**< Multiplexing registers, used in interrupts and system calls but with different meanings */
+    UINT32 USP;       /**< User mode sp register */
+    UINT32 ULR;       /**< User mode lr register */
+    UINT32 R0;
+    UINT32 R1;
+    UINT32 R2;
+    UINT32 R3;
+    UINT32 R12;
+    UINT32 LR;
+    UINT32 PC;
+    UINT32 regCPSR;
 } TaskContext;
 
 typedef struct {
-#if !defined(LOSCFG_ARCH_FPU_DISABLE)
-    UINT64 D[FP_REGS_NUM]; /* D0-D31 */
-    UINT32 regFPSCR;       /* FPSCR */
-    UINT32 regFPEXC;       /* FPEXC */
-#endif
-    UINT32 resved;
-    TASK_IRQ_CONTEXT
-} TaskIrqContext;
+    UINT32 reserved2; /**< Multiplexing registers, used in interrupts and system calls but with different meanings */
+    UINT32 reserved1; /**< Multiplexing registers, used in interrupts and system calls but with different meanings */
+    UINT32 USP;       /**< User mode sp register */
+    UINT32 ULR;       /**< User mode lr register */
+    UINT32 R0;
+    UINT32 R1;
+    UINT32 R2;
+    UINT32 R3;
+    UINT32 R12;
+    UINT32 LR;
+    UINT32 PC;
+    UINT32 regCPSR;
+} IrqContext;
 
 /*
  * Description : task stack initialization
@@ -82,8 +102,9 @@ typedef struct {
  * Return      : pointer to the task context
  */
 extern VOID *OsTaskStackInit(UINT32 taskID, UINT32 stackSize, VOID *topStack, BOOL initFlag);
-extern VOID OsUserCloneParentStack(LosTaskCB *childTaskCB, LosTaskCB *parentTaskCB);
-extern VOID OsUserTaskStackInit(TaskContext *context, TSK_ENTRY_FUNC taskEntry, UINTPTR stack);
+extern VOID OsUserCloneParentStack(VOID *childStack, UINTPTR parentTopOfStask, UINT32 parentStackSize);
+extern VOID OsUserTaskStackInit(TaskContext *context, UINTPTR taskEntry, UINTPTR stack);
+extern VOID OsInitSignalContext(VOID *sp, VOID *signalContext, UINTPTR sigHandler, UINT32 signo, UINT32 param);
 extern void arm_clean_cache_range(UINTPTR start, UINTPTR end);
 extern void arm_inv_cache_range(UINTPTR start, UINTPTR end);
 

arch/arm/arm/src/include/los_hwi_pri.h

@@ -59,7 +59,7 @@ extern VOID OsIncHwiFormCnt(UINT32 index);
 extern UINT32 OsGetHwiFormCnt(UINT32 index);
 extern CHAR *OsGetHwiFormName(UINT32 index);
 extern VOID OsInterrupt(UINT32 intNum);
-extern VOID SyscallHandleInit(VOID);
+extern VOID OsSyscallHandleInit(VOID);
 
 #ifdef __cplusplus
 #if __cplusplus

arch/arm/arm/src/los_arch_mmu.c

@@ -45,11 +45,8 @@
 #include "los_vm_boot.h"
 #include "los_mmu_descriptor_v6.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
+
+#ifdef LOSCFG_KERNEL_MMU
 
 __attribute__((aligned(MMU_DESCRIPTOR_L1_SMALL_ENTRY_NUMBERS))) \
     __attribute__((section(".bss.prebss.translation_table"))) UINT8 \
@@ -70,6 +67,11 @@ STATIC INLINE PTE_T *OsGetPte2BasePtr(PTE_T pte1)
     return LOS_PaddrToKVaddr(pa);
 }
 
+VADDR_T *OsGFirstTableGet(VOID)
+{
+    return (VADDR_T *)g_firstPageTable;
+}
+
 STATIC INLINE UINT32 OsUnmapL1Invalid(vaddr_t *vaddr, UINT32 *count)
 {
     UINT32 unmapCount;
@@ -146,7 +148,6 @@ STATIC VOID OsCvtPte2AttsToFlags(PTE_T l1Entry, PTE_T l2Entry, UINT32 *flags)
 
 STATIC VOID OsPutL2Table(const LosArchMmu *archMmu, UINT32 l1Index, paddr_t l2Paddr)
 {
-    LosVmPage *vmPage = NULL;
     UINT32 index;
     PTE_T ttEntry;
     /* check if any l1 entry points to this l2 table */
@@ -156,8 +157,9 @@ STATIC VOID OsPutL2Table(const LosArchMmu *archMmu, UINT32 l1Index, paddr_t l2Pa
             return;
         }
     }
+#ifdef LOSCFG_KERNEL_VM
     /* we can free this l2 table */
-    vmPage = LOS_VmPageGet(l2Paddr);
+    LosVmPage *vmPage = LOS_VmPageGet(l2Paddr);
     if (vmPage == NULL) {
         LOS_Panic("bad page table paddr %#x\n", l2Paddr);
         return;
@@ -165,6 +167,9 @@ STATIC VOID OsPutL2Table(const LosArchMmu *archMmu, UINT32 l1Index, paddr_t l2Pa
 
     LOS_ListDelete(&vmPage->node);
     LOS_PhysPageFree(vmPage);
+#else
+    (VOID)LOS_MemFree(OS_SYS_MEM_ADDR, LOS_PaddrToKVaddr(l2Paddr));
+#endif
 }
 
 STATIC VOID OsTryUnmapL1PTE(const LosArchMmu *archMmu, vaddr_t vaddr, UINT32 scanIndex, UINT32 scanCount)
@@ -370,13 +375,14 @@ STATIC UINT32 OsUnmapSection(LosArchMmu *archMmu, vaddr_t *vaddr, UINT32 *count)
     return MMU_DESCRIPTOR_L2_NUMBERS_PER_L1;
 }
 
-
 BOOL OsArchMmuInit(LosArchMmu *archMmu, VADDR_T *virtTtb)
 {
+#ifdef LOSCFG_KERNEL_VM
     if (OsAllocAsid(&archMmu->asid) != LOS_OK) {
         VM_ERR("alloc arch mmu asid failed");
         return FALSE;
     }
+#endif
 
     status_t retval = LOS_MuxInit(&archMmu->mtx, NULL);
     if (retval != LOS_OK) {
@@ -480,7 +486,6 @@ STATIC STATUS_T OsGetL2Table(LosArchMmu *archMmu, UINT32 l1Index, paddr_t *ppa)
     UINT32 index;
     PTE_T ttEntry;
     VADDR_T *kvaddr = NULL;
-    LosVmPage *vmPage = NULL;
     UINT32 l2Offset = (MMU_DESCRIPTOR_L2_SMALL_SIZE / MMU_DESCRIPTOR_L1_SMALL_L2_TABLES_PER_PAGE) *
         (l1Index & (MMU_DESCRIPTOR_L1_SMALL_L2_TABLES_PER_PAGE - 1));
     /* lookup an existing l2 page table */
@@ -493,14 +498,22 @@ STATIC STATUS_T OsGetL2Table(LosArchMmu *archMmu, UINT32 l1Index, paddr_t *ppa)
         }
     }
 
+#ifdef LOSCFG_KERNEL_VM
     /* not found: allocate one (paddr) */
-    vmPage = LOS_PhysPageAlloc();
+    LosVmPage *vmPage = LOS_PhysPageAlloc();
     if (vmPage == NULL) {
         VM_ERR("have no memory to save l2 page");
         return LOS_ERRNO_VM_NO_MEMORY;
     }
     LOS_ListAdd(&archMmu->ptList, &vmPage->node);
     kvaddr = OsVmPageToVaddr(vmPage);
+#else
+    kvaddr = LOS_MemAlloc(OS_SYS_MEM_ADDR, MMU_DESCRIPTOR_L2_SMALL_SIZE);
+    if (kvaddr == NULL) {
+        VM_ERR("have no memory to save l2 page");
+        return LOS_ERRNO_VM_NO_MEMORY;
+    }
+#endif
     (VOID)memset_s(kvaddr, MMU_DESCRIPTOR_L2_SMALL_SIZE, 0, MMU_DESCRIPTOR_L2_SMALL_SIZE);
 
     /* get physical address */
@@ -751,21 +764,26 @@ VOID LOS_ArchMmuContextSwitch(LosArchMmu *archMmu)
         ttbcr |= MMU_DESCRIPTOR_TTBCR_PD0;
     }
 
+#ifdef LOSCFG_KERNEL_VM
     /* from armv7a arm B3.10.4, we should do synchronization changes of ASID and TTBR. */
     OsArmWriteContextidr(LOS_GetKVmSpace()->archMmu.asid);
     ISB;
+#endif
     OsArmWriteTtbr0(ttbr);
     ISB;
     OsArmWriteTtbcr(ttbcr);
     ISB;
+#ifdef LOSCFG_KERNEL_VM
     if (archMmu) {
         OsArmWriteContextidr(archMmu->asid);
         ISB;
     }
+#endif
 }
 
 STATUS_T LOS_ArchMmuDestroy(LosArchMmu *archMmu)
 {
+#ifdef LOSCFG_KERNEL_VM
     LosVmPage *page = NULL;
     /* free all of the pages allocated in archMmu->ptList */
     while ((page = LOS_ListRemoveHeadType(&archMmu->ptList, LosVmPage, node)) != NULL) {
@@ -774,6 +792,7 @@ STATUS_T LOS_ArchMmuDestroy(LosArchMmu *archMmu)
 
     OsArmWriteTlbiasid(archMmu->asid);
     OsFreeAsid(archMmu->asid);
+#endif
     (VOID)LOS_MuxDestroy(&archMmu->mtx);
     return LOS_OK;
 }
@@ -806,38 +825,34 @@ STATIC VOID OsSwitchTmpTTB(VOID)
     ISB;
 }
 
-VADDR_T *OsGFirstTableGet()
-{
-    return (VADDR_T *)g_firstPageTable;
-}
-
-STATIC VOID OsSetKSectionAttr(VOID)
+STATIC VOID OsSetKSectionAttr(UINTPTR virtAddr, BOOL uncached)
 {
+    UINT32 offset = virtAddr - KERNEL_VMM_BASE;
     /* every section should be page aligned */
-    UINTPTR textStart = (UINTPTR)&__text_start;
-    UINTPTR textEnd = (UINTPTR)&__text_end;
-    UINTPTR rodataStart = (UINTPTR)&__rodata_start;
-    UINTPTR rodataEnd = (UINTPTR)&__rodata_end;
-    UINTPTR ramDataStart = (UINTPTR)&__ram_data_start;
-    UINTPTR bssEnd = (UINTPTR)&__bss_end;
+    UINTPTR textStart = (UINTPTR)&__text_start + offset;
+    UINTPTR textEnd = (UINTPTR)&__text_end + offset;
+    UINTPTR rodataStart = (UINTPTR)&__rodata_start + offset;
+    UINTPTR rodataEnd = (UINTPTR)&__rodata_end + offset;
+    UINTPTR ramDataStart = (UINTPTR)&__ram_data_start + offset;
+    UINTPTR bssEnd = (UINTPTR)&__bss_end + offset;
     UINT32 bssEndBoundary = ROUNDUP(bssEnd, MB);
     LosArchMmuInitMapping mmuKernelMappings[] = {
         {
-            .phys = SYS_MEM_BASE + textStart - KERNEL_VMM_BASE,
+            .phys = SYS_MEM_BASE + textStart - virtAddr,
             .virt = textStart,
             .size = ROUNDUP(textEnd - textStart, MMU_DESCRIPTOR_L2_SMALL_SIZE),
             .flags = VM_MAP_REGION_FLAG_PERM_READ | VM_MAP_REGION_FLAG_PERM_EXECUTE,
             .name = "kernel_text"
         },
         {
-            .phys = SYS_MEM_BASE + rodataStart - KERNEL_VMM_BASE,
+            .phys = SYS_MEM_BASE + rodataStart - virtAddr,
             .virt = rodataStart,
             .size = ROUNDUP(rodataEnd - rodataStart, MMU_DESCRIPTOR_L2_SMALL_SIZE),
             .flags = VM_MAP_REGION_FLAG_PERM_READ,
             .name = "kernel_rodata"
         },
         {
-            .phys = SYS_MEM_BASE + ramDataStart - KERNEL_VMM_BASE,
+            .phys = SYS_MEM_BASE + ramDataStart - virtAddr,
             .virt = ramDataStart,
             .size = ROUNDUP(bssEndBoundary - ramDataStart, MMU_DESCRIPTOR_L2_SMALL_SIZE),
             .flags = VM_MAP_REGION_FLAG_PERM_READ | VM_MAP_REGION_FLAG_PERM_WRITE,
@@ -847,26 +862,29 @@ STATIC VOID OsSetKSectionAttr(VOID)
     LosVmSpace *kSpace = LOS_GetKVmSpace();
     status_t status;
     UINT32 length;
-    paddr_t oldTtPhyBase;
     int i;
     LosArchMmuInitMapping *kernelMap = NULL;
     UINT32 kmallocLength;
+    UINT32 flags;
 
     /* use second-level mapping of default READ and WRITE */
     kSpace->archMmu.virtTtb = (PTE_T *)g_firstPageTable;
     kSpace->archMmu.physTtb = LOS_PaddrQuery(kSpace->archMmu.virtTtb);
-    status = LOS_ArchMmuUnmap(&kSpace->archMmu, KERNEL_VMM_BASE,
-                               (bssEndBoundary - KERNEL_VMM_BASE) >> MMU_DESCRIPTOR_L2_SMALL_SHIFT);
-    if (status != ((bssEndBoundary - KERNEL_VMM_BASE) >> MMU_DESCRIPTOR_L2_SMALL_SHIFT)) {
+    status = LOS_ArchMmuUnmap(&kSpace->archMmu, virtAddr,
+                               (bssEndBoundary - virtAddr) >> MMU_DESCRIPTOR_L2_SMALL_SHIFT);
+    if (status != ((bssEndBoundary - virtAddr) >> MMU_DESCRIPTOR_L2_SMALL_SHIFT)) {
         VM_ERR("unmap failed, status: %d", status);
         return;
     }
 
-    status = LOS_ArchMmuMap(&kSpace->archMmu, KERNEL_VMM_BASE, SYS_MEM_BASE,
-                             (textStart - KERNEL_VMM_BASE) >> MMU_DESCRIPTOR_L2_SMALL_SHIFT,
-                             VM_MAP_REGION_FLAG_PERM_READ | VM_MAP_REGION_FLAG_PERM_WRITE |
-                             VM_MAP_REGION_FLAG_PERM_EXECUTE);
-    if (status != ((textStart - KERNEL_VMM_BASE) >> MMU_DESCRIPTOR_L2_SMALL_SHIFT)) {
+    flags = VM_MAP_REGION_FLAG_PERM_READ | VM_MAP_REGION_FLAG_PERM_WRITE | VM_MAP_REGION_FLAG_PERM_EXECUTE;
+    if (uncached) {
+        flags |= VM_MAP_REGION_FLAG_UNCACHED;
+    }
+    status = LOS_ArchMmuMap(&kSpace->archMmu, virtAddr, SYS_MEM_BASE,
+                             (textStart - virtAddr) >> MMU_DESCRIPTOR_L2_SMALL_SHIFT,
+                             flags);
+    if (status != ((textStart - virtAddr) >> MMU_DESCRIPTOR_L2_SMALL_SHIFT)) {
         VM_ERR("mmap failed, status: %d", status);
         return;
     }
@@ -874,6 +892,9 @@ STATIC VOID OsSetKSectionAttr(VOID)
     length = sizeof(mmuKernelMappings) / sizeof(LosArchMmuInitMapping);
     for (i = 0; i < length; i++) {
         kernelMap = &mmuKernelMappings[i];
+        if (uncached) {
+            kernelMap->flags |= VM_MAP_REGION_FLAG_UNCACHED;
+        }
         status = LOS_ArchMmuMap(&kSpace->archMmu, kernelMap->virt, kernelMap->phys,
                                  kernelMap->size >> MMU_DESCRIPTOR_L2_SMALL_SHIFT, kernelMap->flags);
         if (status != (kernelMap->size >> MMU_DESCRIPTOR_L2_SMALL_SHIFT)) {
@@ -883,16 +904,29 @@ STATIC VOID OsSetKSectionAttr(VOID)
         LOS_VmSpaceReserve(kSpace, kernelMap->size, kernelMap->virt);
     }
 
-    kmallocLength = KERNEL_VMM_BASE + SYS_MEM_SIZE_DEFAULT - bssEndBoundary;
+    kmallocLength = virtAddr + SYS_MEM_SIZE_DEFAULT - bssEndBoundary;
+    flags = VM_MAP_REGION_FLAG_PERM_READ | VM_MAP_REGION_FLAG_PERM_WRITE;
+    if (uncached) {
+        flags |= VM_MAP_REGION_FLAG_UNCACHED;
+    }
     status = LOS_ArchMmuMap(&kSpace->archMmu, bssEndBoundary,
-                             SYS_MEM_BASE + bssEndBoundary - KERNEL_VMM_BASE,
+                             SYS_MEM_BASE + bssEndBoundary - virtAddr,
                              kmallocLength >> MMU_DESCRIPTOR_L2_SMALL_SHIFT,
-                             VM_MAP_REGION_FLAG_PERM_READ | VM_MAP_REGION_FLAG_PERM_WRITE);
+                             flags);
     if (status != (kmallocLength >> MMU_DESCRIPTOR_L2_SMALL_SHIFT)) {
         VM_ERR("mmap failed, status: %d", status);
         return;
     }
     LOS_VmSpaceReserve(kSpace, kmallocLength, bssEndBoundary);
+}
+
+STATIC VOID OsKSectionNewAttrEnable(VOID)
+{
+    LosVmSpace *kSpace = LOS_GetKVmSpace();
+    paddr_t oldTtPhyBase;
+
+    kSpace->archMmu.virtTtb = (PTE_T *)g_firstPageTable;
+    kSpace->archMmu.physTtb = LOS_PaddrQuery(kSpace->archMmu.virtTtb);
 
     /* we need free tmp ttbase */
     oldTtPhyBase = OsArmReadTtbr0();
@@ -926,14 +960,10 @@ VOID OsInitMappingStartUp(VOID)
 
     OsSwitchTmpTTB();
 
-    OsSetKSectionAttr();
-
-    OsArchMmuInitPerCPU();
+    OsSetKSectionAttr(KERNEL_VMM_BASE, FALSE);
+    OsSetKSectionAttr(UNCACHED_VMM_BASE, TRUE);
+    OsKSectionNewAttrEnable();
 }
+#endif
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 

arch/arm/arm/src/los_asid.c

@@ -39,11 +39,8 @@
 #include "los_spinlock.h"
 #include "los_mmu_descriptor_v6.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
+
+#ifdef LOSCFG_KERNEL_VM
 
 STATIC SPIN_LOCK_INIT(g_cpuAsidLock);
 STATIC UINTPTR g_asidPool[BITMAP_NUM_WORDS(1UL << MMU_ARM_ASID_BITS)];
@@ -72,9 +69,5 @@ VOID OsFreeAsid(UINT32 asid)
     LOS_BitmapClrNBits(g_asidPool, asid, 1);
     LOS_SpinUnlockRestore(&g_cpuAsidLock, flags);
 }
+#endif
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

arch/arm/arm/src/los_dispatch.S

@@ -32,6 +32,7 @@
 #include "asm.h"
 #include "arch_config.h"
 
+    .extern   OsSaveSignalContext
     .extern   OsSchedToUserReleaseLock
     .global   OsTaskSchedule
     .global   OsTaskContextLoad
@@ -85,17 +86,16 @@
  */
 OsTaskSchedule:
     MRS      R2, CPSR
-    STMFD    SP!, {LR}
-    STMFD    SP!, {LR}
-    /* jump sp */
-    SUB      SP, SP, #4
-
-    /* push r0-r12*/
-    STMFD    SP!, {R0-R12}
     STMFD    SP!, {R2}
+    STMFD    SP!, {LR}
+    STMFD    SP!, {LR}
+    STMFD    SP!, {R12}
 
-    /* 8 bytes stack align */
-    SUB      SP, SP, #4
+    /* jump R0 - R3 USP, ULR reserved */
+    SUB      SP, SP, #(8 * 4)
+
+    /* push R4 - R11*/
+    STMFD    SP!, {R4-R11}
 
     /* save fpu registers */
     PUSH_FPU_REGS   R2
@@ -113,131 +113,86 @@ OsTaskContextLoad:
     /* restore fpu registers */
     POP_FPU_REGS    R2
 
-    /* 8 bytes stack align */
-    ADD     SP, SP, #4
-
-    LDMFD   SP!, {R0}
-    MOV     R4, R0
-    AND     R0, R0, #CPSR_MASK_MODE
+    LDMFD   SP!, {R4-R11}
+    LDR     R3, [SP, #(11 * 4)]
+    AND     R0, R3, #CPSR_MASK_MODE
     CMP     R0, #CPSR_USER_MODE
     BNE     OsKernelTaskLoad
 
+    MVN     R2, #CPSR_INT_DISABLE
+    AND     R3, R3, R2
+    STR     R3, [SP, #(11 * 4)]
+
 #ifdef LOSCFG_KERNEL_SMP
-    /* 8 bytes stack align */
-    SUB     SP, SP, #4
     BL      OsSchedToUserReleaseLock
-    ADD     SP, SP, #4
 #endif
 
-    MVN     R3, #CPSR_INT_DISABLE
-    AND     R4, R4, R3
-    MSR     SPSR_cxsf, R4
-
-    /* restore r0-r12, lr */
-    LDMFD   SP!, {R0-R12}
+    /* jump sp, reserved */
+    ADD     SP, SP, #(2 * 4)
     LDMFD   SP, {R13, R14}^
     ADD     SP, SP, #(2 * 4)
-    LDMFD   SP!, {PC}^
+    LDMFD   SP!, {R0-R3, R12, LR}
+    RFEIA   SP!
 
 OsKernelTaskLoad:
-    MSR     SPSR_cxsf, R4
-    /* restore r0-r12, lr */
-    LDMFD   SP!, {R0-R12}
-    ADD     SP, SP, #4
-    LDMFD   SP!, {LR, PC}^
+    ADD     SP, SP, #(4 * 4)
+    LDMFD   SP!, {R0-R3, R12, LR}
+    RFEIA   SP!
 
 OsIrqHandler:
     SUB     LR, LR, #4
 
-    /* push r0-r3 to irq stack */
-    STMFD   SP, {R0-R3}
-    SUB     R0, SP, #(4 * 4)
-    MRS     R1, SPSR
-    MOV     R2, LR
-
+    /* Save pc and cpsr to svc sp, ARMv6 and above support */
+    SRSFD   #0x13!
     /* disable irq, switch to svc mode */
     CPSID   i, #0x13
 
-    /* push spsr and pc in svc stack */
-    STMFD   SP!, {R1, R2}
-    STMFD   SP, {LR}
-
-    AND     R3, R1, #CPSR_MASK_MODE
-    CMP     R3, #CPSR_USER_MODE
-    BNE     OsIrqFromKernel
-
-    /* push user sp, lr in svc stack */
+    STMFD   SP!, {R0-R3, R12, LR}
     STMFD   SP, {R13, R14}^
-
-OsIrqFromKernel:
-    /* from svc not need save sp and lr */
-    SUB     SP, SP, #(2 * 4)
-
-    /* pop r0-r3 form irq stack*/
-    LDMFD   R0, {R0-R3}
-
-    /* push caller saved regs as trashed regs in svc stack */
-    STMFD   SP!, {R0-R3, R12}
-
-    /* 8 bytes stack align */
-    SUB     SP, SP, #4
+    SUB     SP, SP, #(4 * 4)
+    STR     R4, [SP, #0]
 
     /*
      * save fpu regs in case in case those been
      * altered in interrupt handlers.
      */
     PUSH_FPU_REGS   R0
-#ifdef LOSCFG_IRQ_USE_STANDALONE_STACK
-    PUSH    {R4}
+
     MOV     R4, SP
     EXC_SP_SET __svc_stack_top, OS_EXC_SVC_STACK_SIZE, R1, R2
-#endif
 
     BLX     HalIrqHandler
 
-#ifdef LOSCFG_IRQ_USE_STANDALONE_STACK
     MOV     SP, R4
-    POP     {R4}
-#endif
 
     /* process pending signals */
-    BL      OsTaskProcSignal
-
-    BL      OsSchedIrqEndCheckNeedSched
-
-    MOV     R0,SP
-    MOV     R1,R7
-    BL      OsSaveSignalContextIrq
+    BLX     OsTaskProcSignal
+    BLX     OsSchedIrqEndCheckNeedSched
 
     /* restore fpu regs */
-    POP_FPU_REGS    R0
+    POP_FPU_REGS R0
+    LDR   R4, [SP, #0]
 
-    ADD     SP, SP, #4
-
-OsIrqContextRestore:
-    LDR     R0, [SP, #(4 * 7)]
-    MSR     SPSR_cxsf, R0
-    AND     R0, R0, #CPSR_MASK_MODE
-    CMP     R0, #CPSR_USER_MODE
-
-    LDMFD   SP!, {R0-R3, R12}
-
-    BNE     OsIrqContextRestoreToKernel
+    /* Obtain the CPSR to determine the mode the system is in when the interrupt is triggered */
+    LDR     R3, [SP, #(11 * 4)]
+    AND     R1, R3, #CPSR_MASK_MODE
+    CMP     R1, #CPSR_USER_MODE
+    BNE     1f
 
+    MOV     R0, SP
+    STR     R7, [SP, #0]
+    /* sp - sizeof(IrqContext) */
+    SUB     SP, SP, #(12 * 4)
+    MOV     R1, SP
+    BLX     OsSaveSignalContext
+    MOV     SP, R0
+1:
+    ADD     SP, SP, #(2 * 4)
     /* load user sp and lr, and jump cpsr */
     LDMFD   SP, {R13, R14}^
-    ADD     SP, SP, #(3 * 4)
-
-    /* return to user mode */
-    LDMFD   SP!, {PC}^
-
-OsIrqContextRestoreToKernel:
-    /* svc mode not load sp */
-    ADD     SP, SP, #4
-    LDMFD   SP!, {LR}
-    /* jump cpsr and return to svc mode */
-    ADD     SP, SP, #4
-    LDMFD   SP!, {PC}^
+    ADD     SP, SP, #(2 * 4)
+    LDMFD   SP!, {R0-R3, R12, LR}
+    RFEIA   SP!
 
 FUNCTION(ArchSpinLock)
     mov     r1, #1

arch/arm/arm/src/los_exc.c

@@ -34,12 +34,9 @@
 #include "los_printf_pri.h"
 #include "los_task_pri.h"
 #include "los_hw_pri.h"
-#ifdef LOSCFG_SHELL_EXCINFO
+#ifdef LOSCFG_SAVE_EXCINFO
 #include "los_excinfo_pri.h"
 #endif
-#ifdef LOSCFG_EXC_INTERACTION
-#include "los_exc_interaction_pri.h"
-#endif
 #include "los_sys_stack_pri.h"
 #include "los_stackinfo_pri.h"
 #ifdef LOSCFG_COREDUMP
@@ -55,7 +52,9 @@
 #include "los_vm_phys.h"
 #include "los_vm_fault.h"
 #include "los_vm_common.h"
+#ifdef LOSCFG_KERNEL_DYNLOAD
 #include "los_load_elf.h"
+#endif
 #include "arm.h"
 #include "los_bitmap.h"
 #include "los_process_pri.h"
@@ -64,11 +63,6 @@
 #include "console.h"
 #endif
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 #define INVALID_CPUID  0xFFFF
 #define OS_EXC_VMM_NO_REGION  0x0U
@@ -107,11 +101,7 @@ STATIC UINT32 g_nextExcWaitCpu = INVALID_CPUID;
                             (IS_ALIGNED((ptr), sizeof(CHAR *))))
 
 STATIC const StackInfo g_excStack[] = {
-    { &__undef_stack, OS_EXC_UNDEF_STACK_SIZE, "udf_stack" },
-    { &__abt_stack,   OS_EXC_ABT_STACK_SIZE,   "abt_stack" },
-    { &__fiq_stack,   OS_EXC_FIQ_STACK_SIZE,   "fiq_stack" },
     { &__svc_stack,   OS_EXC_SVC_STACK_SIZE,   "svc_stack" },
-    { &__irq_stack,   OS_EXC_IRQ_STACK_SIZE,   "irq_stack" },
     { &__exc_stack,   OS_EXC_STACK_SIZE,       "exc_stack" }
 };
 
@@ -185,20 +175,32 @@ STATIC INT32 OsDecodeDataFSR(UINT32 regDFSR)
     return ret;
 }
 
+#ifdef LOSCFG_KERNEL_VM
 UINT32 OsArmSharedPageFault(UINT32 excType, ExcContext *frame, UINT32 far, UINT32 fsr)
 {
-    PRINT_INFO("page fault entry!!!\n");
-    BOOL instruction_fault = FALSE;
+    BOOL instructionFault = FALSE;
     UINT32 pfFlags = 0;
     UINT32 fsrFlag;
     BOOL write = FALSE;
+    UINT32 ret;
 
+    PRINT_INFO("page fault entry!!!\n");
     if (OsGetSystemStatus() == OS_SYSTEM_EXC_CURR_CPU) {
         return LOS_ERRNO_VM_NOT_FOUND;
     }
-
+#if defined(LOSCFG_KERNEL_SMP) && defined(LOSCFG_DEBUG_VERSION)
+    BOOL irqEnable = !(LOS_SpinHeld(&g_taskSpin) && (OsPercpuGet()->taskLockCnt != 0));
+    if (irqEnable) {
+        ArchIrqEnable();
+    } else {
+        PrintExcInfo("[ERR][%s] may be held scheduler lock when entering [%s] on cpu [%u]\n",
+                     OsCurrTaskGet()->taskName, __FUNCTION__, ArchCurrCpuid());
+    }
+#else
+    ArchIrqEnable();
+#endif
     if (excType == OS_EXCEPT_PREFETCH_ABORT) {
-        instruction_fault = TRUE;
+        instructionFault = TRUE;
     } else {
         write = !!BIT_GET(fsr, WNR_BIT);
     }
@@ -216,14 +218,25 @@ UINT32 OsArmSharedPageFault(UINT32 excType, ExcContext *frame, UINT32 far, UINT3
             BOOL user = (frame->regCPSR & CPSR_MODE_MASK) == CPSR_MODE_USR;
             pfFlags |= write ? VM_MAP_PF_FLAG_WRITE : 0;
             pfFlags |= user ? VM_MAP_PF_FLAG_USER : 0;
-            pfFlags |= instruction_fault ? VM_MAP_PF_FLAG_INSTRUCTION : 0;
+            pfFlags |= instructionFault ? VM_MAP_PF_FLAG_INSTRUCTION : 0;
             pfFlags |= VM_MAP_PF_FLAG_NOT_PRESENT;
-            return OsVmPageFaultHandler(far, pfFlags, frame);
+            ret = OsVmPageFaultHandler(far, pfFlags, frame);
+            break;
         }
         default:
-            return LOS_ERRNO_VM_NOT_FOUND;
+            ret = LOS_ERRNO_VM_NOT_FOUND;
+            break;
     }
+#if defined(LOSCFG_KERNEL_SMP) && defined(LOSCFG_DEBUG_VERSION)
+    if (irqEnable) {
+        ArchIrqDisable();
+    }
+#else
+    ArchIrqDisable();
+#endif
+    return ret;
 }
+#endif
 
 STATIC VOID OsExcType(UINT32 excType, ExcContext *excBufAddr, UINT32 far, UINT32 fsr)
 {
@@ -256,6 +269,7 @@ STATIC const CHAR *g_excTypeString[] = {
     "irq"
 };
 
+#ifdef LOSCFG_KERNEL_VM
 STATIC VADDR_T OsGetTextRegionBase(LosVmMapRegion *region, LosProcessCB *runProcess)
 {
     struct file *curFilep = NULL;
@@ -283,41 +297,52 @@ STATIC VADDR_T OsGetTextRegionBase(LosVmMapRegion *region, LosProcessCB *runProc
     } while (!strcmp(curFilep->f_path, lastFilep->f_path));
 
 DONE:
+#ifdef LOSCFG_KERNEL_DYNLOAD
     if (curRegion->range.base == EXEC_MMAP_BASE) {
         return 0;
     }
+#endif
     return curRegion->range.base;
 }
+#endif
 
 STATIC VOID OsExcSysInfo(UINT32 excType, const ExcContext *excBufAddr)
 {
     LosTaskCB *runTask = OsCurrTaskGet();
     LosProcessCB *runProcess = OsCurrProcessGet();
-    LosVmMapRegion *region = NULL;
 
     PrintExcInfo("excType: %s\n"
                  "processName       = %s\n"
                  "processID         = %u\n"
+#ifdef LOSCFG_KERNEL_VM
                  "process aspace    = 0x%08x -> 0x%08x\n"
+#endif
                  "taskName          = %s\n"
                  "taskID            = %u\n",
                  g_excTypeString[excType],
                  runProcess->processName,
                  runProcess->processID,
+#ifdef LOSCFG_KERNEL_VM
                  runProcess->vmSpace->base,
                  runProcess->vmSpace->base + runProcess->vmSpace->size,
+#endif
                  runTask->taskName,
                  runTask->taskID);
 
+#ifdef LOSCFG_KERNEL_VM
     if (OsProcessIsUserMode(runProcess)) {
         PrintExcInfo("task user stack   = 0x%08x -> 0x%08x\n",
                      runTask->userMapBase, runTask->userMapBase + runTask->userMapSize);
-    } else {
+    } else
+#endif
+    {
         PrintExcInfo("task kernel stack = 0x%08x -> 0x%08x\n",
                      runTask->topOfStack, runTask->topOfStack + runTask->stackSize);
     }
 
     PrintExcInfo("pc    = 0x%x ", excBufAddr->PC);
+#ifdef LOSCFG_KERNEL_VM
+    LosVmMapRegion *region = NULL;
     if (g_excFromUserMode[ArchCurrCpuid()] == TRUE) {
         if (LOS_IsUserAddress((vaddr_t)excBufAddr->PC)) {
             region = LOS_RegionFind(runProcess->vmSpace, (VADDR_T)excBufAddr->PC);
@@ -334,7 +359,9 @@ STATIC VOID OsExcSysInfo(UINT32 excType, const ExcContext *excBufAddr)
                          (VADDR_T)excBufAddr->ULR - OsGetTextRegionBase(region, runProcess));
         }
         PrintExcInfo("\nusp   = 0x%x", excBufAddr->USP);
-    } else {
+    } else
+#endif
+    {
         PrintExcInfo("\nklr   = 0x%x\n"
                      "ksp   = 0x%x\n",
                      excBufAddr->LR,
@@ -386,6 +413,7 @@ EXC_PROC_FUNC OsExcRegHookGet(VOID)
     return g_excHook;
 }
 
+#ifdef LOSCFG_KERNEL_VM
 STATIC VOID OsDumpExcVaddrRegion(LosVmSpace *space, LosVmMapRegion *region)
 {
     INT32 i, numPages, pageCount;
@@ -471,6 +499,7 @@ STATIC VOID OsDumpProcessUsedMemNode(UINT16 vmmFalgs)
     OsDumpProcessUsedMemRegion(runProcess, runspace, vmmFalgs);
     return;
 }
+#endif
 
 VOID OsDumpContextMem(const ExcContext *excBufAddr)
 {
@@ -493,7 +522,7 @@ VOID OsDumpContextMem(const ExcContext *excBufAddr)
     }
 }
 
-STATIC VOID OsExcRestore(UINTPTR taskStackPointer)
+STATIC VOID OsExcRestore(VOID)
 {
     UINT32 currCpuID = ArchCurrCpuid();
 
@@ -504,8 +533,6 @@ STATIC VOID OsExcRestore(UINTPTR taskStackPointer)
     OsPercpuGet()->excFlag = CPU_RUNNING;
 #endif
     OsPercpuGet()->taskLockCnt = 0;
-
-    OsSetCurrCpuSp(taskStackPointer);
 }
 
 STATIC VOID OsUserExcHandle(ExcContext *excBufAddr)
@@ -532,19 +559,20 @@ STATIC VOID OsUserExcHandle(ExcContext *excBufAddr)
 #endif
     runProcess->processStatus &= ~OS_PROCESS_FLAG_EXIT;
 
-    OsExcRestore(excBufAddr->SP);
-
 #if (LOSCFG_KERNEL_SMP == YES)
 #ifdef LOSCFG_FS_VFS
     OsWakeConsoleSendTask();
 #endif
 #endif
 
-#ifdef LOSCFG_SHELL_EXCINFO
+#ifdef LOSCFG_SAVE_EXCINFO
     OsProcessExitCodeCoreDumpSet(runProcess);
 #endif
     OsProcessExitCodeSignalSet(runProcess, SIGUSR2);
 
+    /* Exception handling All operations should be kept prior to that operation */
+    OsExcRestore();
+
     /* kill user exc process */
     LOS_Exit(OS_PRO_EXIT_OK);
 
@@ -557,18 +585,17 @@ STATIC VOID OsUserExcHandle(ExcContext *excBufAddr)
 /* this function is used to validate fp or validate the checking range start and end. */
 STATIC INLINE BOOL IsValidFP(UINTPTR regFP, UINTPTR start, UINTPTR end, vaddr_t *vaddr)
 {
-    LosProcessCB *runProcess = NULL;
-    LosVmSpace *runspace = NULL;
     VADDR_T kvaddr = regFP;
-    PADDR_T paddr;
 
     if (!((regFP > start) && (regFP < end) && IS_ALIGNED(regFP, sizeof(CHAR *)))) {
         return FALSE;
     }
 
+#ifdef LOSCFG_KERNEL_VM
+    PADDR_T paddr;
     if (g_excFromUserMode[ArchCurrCpuid()] == TRUE) {
-        runProcess = OsCurrProcessGet();
-        runspace = runProcess->vmSpace;
+        LosProcessCB *runProcess = OsCurrProcessGet();
+        LosVmSpace *runspace = runProcess->vmSpace;
         if (runspace == NULL) {
             return FALSE;
         }
@@ -579,6 +606,7 @@ STATIC INLINE BOOL IsValidFP(UINTPTR regFP, UINTPTR start, UINTPTR end, vaddr_t
 
         kvaddr = (PADDR_T)(UINTPTR)LOS_PaddrToKVaddr(paddr);
     }
+#endif
     if (vaddr != NULL) {
         *vaddr = kvaddr;
     }
@@ -647,8 +675,8 @@ VOID BackTraceSub(UINTPTR regFP)
     UINTPTR stackStart, stackEnd;
     UINTPTR backFP = regFP;
     UINT32 count = 0;
-    LosVmMapRegion *region = NULL;
     VADDR_T kvaddr;
+    LosProcessCB *runProcess = OsCurrProcessGet();
 
     if (FindSuitableStack(regFP, &stackStart, &stackEnd, &kvaddr) == FALSE) {
         PrintExcInfo("traceback error fp = 0x%x\n", regFP);
@@ -670,28 +698,33 @@ VOID BackTraceSub(UINTPTR regFP)
     while (IsValidFP(backFP, stackStart, stackEnd, &kvaddr) == TRUE) {
         tmpFP = backFP;
 #ifdef LOSCFG_COMPILER_CLANG_LLVM
-        backFP = *(UINTPTR *)(UINTPTR)kvaddr;
+	backFP = *(UINTPTR *)(UINTPTR)kvaddr;
         if (IsValidFP(tmpFP + POINTER_SIZE, stackStart, stackEnd, &kvaddr) == FALSE) {
             PrintExcInfo("traceback backLR check failed, backLP: 0x%x\n", tmpFP + POINTER_SIZE);
             return;
         }
         backLR = *(UINTPTR *)(UINTPTR)kvaddr;
 #else
-        backLR = *(UINTPTR *)(UINTPTR)kvaddr;
+	backLR = *(UINTPTR *)(UINTPTR)kvaddr;
         if (IsValidFP(tmpFP - POINTER_SIZE, stackStart, stackEnd, &kvaddr) == FALSE) {
             PrintExcInfo("traceback backFP check failed, backFP: 0x%x\n", tmpFP - POINTER_SIZE);
             return;
         }
         backFP = *(UINTPTR *)(UINTPTR)kvaddr;
 #endif
+#ifdef LOSCFG_KERNEL_VM
+        LosVmMapRegion *region = NULL;
         if (LOS_IsUserAddress((VADDR_T)backLR) == TRUE) {
-            region = LOS_RegionFind(OsCurrProcessGet()->vmSpace, (VADDR_T)backLR);
+            region = LOS_RegionFind(runProcess->vmSpace, (VADDR_T)backLR);
         }
         if (region != NULL) {
             PrintExcInfo("traceback %u -- lr = 0x%x    fp = 0x%x lr in %s --> 0x%x\n", count, backLR, backFP,
-                         OsGetRegionNameOrFilePath(region), backLR - region->range.base);
+                         OsGetRegionNameOrFilePath(region),
+                         backLR - OsGetTextRegionBase(region, runProcess));
             region = NULL;
-        } else {
+        } else
+#endif
+        {
             PrintExcInfo("traceback %u -- lr = 0x%x    fp = 0x%x\n", count, backLR, backFP);
         }
         count++;
@@ -726,8 +759,9 @@ VOID OsExcHook(UINT32 excType, ExcContext *excBufAddr, UINT32 far, UINT32 fsr)
 #ifndef LOSCFG_DEBUG_VERSION
     if (g_excFromUserMode[ArchCurrCpuid()] != TRUE) {
 #endif
+#ifdef LOSCFG_KERNEL_VM
         OsDumpProcessUsedMemNode(OS_EXC_VMM_NO_REGION);
-
+#endif
         OsExcStackInfo();
 #ifndef LOSCFG_DEBUG_VERSION
     }
@@ -787,7 +821,7 @@ VOID OsTaskBackTrace(UINT32 taskID)
     }
     PRINTK("TaskName = %s\n", taskCB->taskName);
     PRINTK("TaskID = 0x%x\n", taskCB->taskID);
-    BackTrace(((TaskContext *)(taskCB->stackPointer))->R[11]); /* R11 : FP */
+    BackTrace(((TaskContext *)(taskCB->stackPointer))->R11); /* R11 : FP */
 }
 
 VOID OsBackTrace(VOID)
@@ -924,7 +958,7 @@ STATIC VOID OsWaitOtherCoresHandleExcEnd(UINT32 currCpuID)
     }
 }
 
-STATIC VOID OsCheckAllCpuStatus(UINTPTR taskStackPointer)
+STATIC VOID OsCheckAllCpuStatus(VOID)
 {
     UINT32 currCpuID = ArchCurrCpuid();
     UINT32 ret, target;
@@ -944,7 +978,7 @@ STATIC VOID OsCheckAllCpuStatus(UINTPTR taskStackPointer)
     } else if (g_excFromUserMode[currCpuID] == TRUE) {
         if (OsCurrProcessGet()->processID == g_currHandleExcPID) {
             LOS_SpinUnlock(&g_excSerializerSpin);
-            OsExcRestore(taskStackPointer);
+            OsExcRestore();
             while (1) {
                 ret = LOS_TaskSuspend(OsCurrTaskGet()->taskID);
                 PrintExcInfo("%s supend task :%u failed: 0x%x\n", __FUNCTION__, OsCurrTaskGet()->taskID, ret);
@@ -972,12 +1006,11 @@ STATIC VOID OsCheckAllCpuStatus(UINTPTR taskStackPointer)
 }
 #endif
 
-STATIC VOID OsCheckCpuStatus(UINTPTR taskStackPointer)
+STATIC VOID OsCheckCpuStatus(VOID)
 {
 #if (LOSCFG_KERNEL_SMP == YES)
-    OsCheckAllCpuStatus(taskStackPointer);
+    OsCheckAllCpuStatus();
 #else
-    (VOID)taskStackPointer;
     g_currHandleExcCpuID = ArchCurrCpuid();
 #endif
 }
@@ -998,7 +1031,7 @@ LITE_OS_SEC_TEXT VOID STATIC OsExcPriorDisposal(ExcContext *excBufAddr)
         g_excFromUserMode[ArchCurrCpuid()] = FALSE;
     }
 
-    OsCheckCpuStatus(excBufAddr->SP);
+    OsCheckCpuStatus();
 
     if (g_excFromUserMode[ArchCurrCpuid()] == TRUE) {
         while (1) {
@@ -1026,26 +1059,40 @@ LITE_OS_SEC_TEXT VOID STATIC OsExcPriorDisposal(ExcContext *excBufAddr)
 
 LITE_OS_SEC_TEXT_INIT STATIC VOID OsPrintExcHead(UINT32 far)
 {
-#ifdef LOSCFG_DEBUG_VERSION
-    LosVmSpace *space = NULL;
-    VADDR_T vaddr;
-#endif
-
+#ifdef LOSCFG_KERNEL_VM
     /* You are not allowed to add any other print information before this exception information */
     if (g_excFromUserMode[ArchCurrCpuid()] == TRUE) {
 #ifdef LOSCFG_DEBUG_VERSION
-        vaddr = ROUNDDOWN(far, PAGE_SIZE);
-        space = LOS_SpaceGet(vaddr);
+        VADDR_T vaddr = ROUNDDOWN(far, PAGE_SIZE);
+        LosVmSpace *space = LOS_SpaceGet(vaddr);
         if (space != NULL) {
             LOS_DumpMemRegion(vaddr);
         }
 #endif
         PrintExcInfo("##################excFrom: User!####################\n");
-    } else {
+    } else
+#endif
+    {
         PrintExcInfo("##################excFrom: kernel!###################\n");
     }
 }
 
+#ifdef LOSCFG_SAVE_EXCINFO
+STATIC VOID OsSysStateSave(UINT32 *intCount, UINT32 *lockCount)
+{
+    *intCount = g_intCount[ArchCurrCpuid()];
+    *lockCount = OsPercpuGet()->taskLockCnt;
+    g_intCount[ArchCurrCpuid()] = 0;
+    OsPercpuGet()->taskLockCnt = 0;
+}
+
+STATIC VOID OsSysStateRestore(UINT32 intCount, UINT32 lockCount)
+{
+    g_intCount[ArchCurrCpuid()] = intCount;
+    OsPercpuGet()->taskLockCnt = lockCount;
+}
+#endif
+
 /*
  * Description : EXC handler entry
  * Input       : excType    --- exc type
@@ -1053,6 +1100,11 @@ LITE_OS_SEC_TEXT_INIT STATIC VOID OsPrintExcHead(UINT32 far)
  */
 LITE_OS_SEC_TEXT_INIT VOID OsExcHandleEntry(UINT32 excType, ExcContext *excBufAddr, UINT32 far, UINT32 fsr)
 {
+#ifdef LOSCFG_SAVE_EXCINFO
+    UINT32 intCount;
+    UINT32 lockCount;
+#endif
+
     /* Task scheduling is not allowed during exception handling */
     OsPercpuGet()->taskLockCnt++;
 
@@ -1066,18 +1118,18 @@ LITE_OS_SEC_TEXT_INIT VOID OsExcHandleEntry(UINT32 excType, ExcContext *excBufAd
     OsAllCpuStatusOutput();
 #endif
 
-#ifdef LOSCFG_SHELL_EXCINFO
+#ifdef LOSCFG_SAVE_EXCINFO
     log_read_write_fn func = GetExcInfoRW();
 #endif
 
     if (g_excHook != NULL) {
         if (g_curNestCount[ArchCurrCpuid()] == 1) {
-#ifdef LOSCFG_SHELL_EXCINFO
+#ifdef LOSCFG_SAVE_EXCINFO
             if (func != NULL) {
                 SetExcInfoIndex(0);
-                g_intCount[ArchCurrCpuid()] = 0;
+                OsSysStateSave(&intCount, &lockCount);
                 OsRecordExcInfoTime();
-                g_intCount[ArchCurrCpuid()] = 1;
+                OsSysStateRestore(intCount, lockCount);
             }
 #endif
             g_excHook(excType, excBufAddr, far, fsr);
@@ -1085,18 +1137,15 @@ LITE_OS_SEC_TEXT_INIT VOID OsExcHandleEntry(UINT32 excType, ExcContext *excBufAd
             OsCallStackInfo();
         }
 
-#ifdef LOSCFG_SHELL_EXCINFO
+#ifdef LOSCFG_SAVE_EXCINFO
         if (func != NULL) {
             PrintExcInfo("Be sure flash space bigger than GetExcInfoIndex():0x%x\n", GetExcInfoIndex());
-            g_intCount[ArchCurrCpuid()] = 0;
+            OsSysStateSave(&intCount, &lockCount);
             func(GetRecordAddr(), GetRecordSpace(), 0, GetExcInfoBuf());
-            g_intCount[ArchCurrCpuid()] = 1;
+            OsSysStateRestore(intCount, lockCount);
         }
 #endif
     }
-#ifdef LOSCFG_EXC_INTERACTION
-    OsExcInteractionTaskKeep();
-#endif
 
 #ifdef LOSCFG_SHELL_CMD_DEBUG
     SystemRebootFunc rebootHook = OsGetRebootHook();
@@ -1116,6 +1165,7 @@ __attribute__((noinline)) VOID LOS_Panic(const CHAR *fmt, ...)
     UartVprintf(fmt, ap);
     va_end(ap);
     __asm__ __volatile__("swi 0");
+    while (1);
 }
 
 /* stack protector */
@@ -1168,8 +1218,3 @@ VOID LOS_RecordLR(UINTPTR *LR, UINT32 LRSize, UINT32 recordCount, UINT32 jumpCou
     }
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

arch/arm/arm/src/los_hw.c

@@ -32,12 +32,6 @@
 #include "los_hw_pri.h"
 #include "los_task_pri.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
-
 /* support cpu vendors */
 CpuVendor g_cpuTable[] = {
     /* armv7-a */
@@ -77,13 +71,10 @@ VOID OsTaskEntrySetupLoopFrame(UINT32 arg0)
 
 LITE_OS_SEC_TEXT_INIT VOID *OsTaskStackInit(UINT32 taskID, UINT32 stackSize, VOID *topStack, BOOL initFlag)
 {
-    UINT32 index = 1;
-    TaskContext *taskContext = NULL;
-
     if (initFlag == TRUE) {
         OsStackInit(topStack, stackSize);
     }
-    taskContext = (TaskContext *)(((UINTPTR)topStack + stackSize) - sizeof(TaskContext));
+    TaskContext *taskContext = (TaskContext *)(((UINTPTR)topStack + stackSize) - sizeof(TaskContext));
 
     /* initialize the task context */
 #ifdef LOSCFG_GDB
@@ -92,22 +83,17 @@ LITE_OS_SEC_TEXT_INIT VOID *OsTaskStackInit(UINT32 taskID, UINT32 stackSize, VOI
     taskContext->PC = (UINTPTR)OsTaskEntry;
 #endif
     taskContext->LR = (UINTPTR)OsTaskExit;  /* LR should be kept, to distinguish it's THUMB or ARM instruction */
-    taskContext->resved = 0x0;
-    taskContext->R[0] = taskID;             /* R0 */
-    taskContext->R[index++] = 0x01010101;   /* R1, 0x01010101 : reg initialed magic word */
-    for (; index < GEN_REGS_NUM; index++) {
-        taskContext->R[index] = taskContext->R[index - 1] + taskContext->R[1]; /* R2 - R12 */
-    }
+    taskContext->R0 = taskID;               /* R0 */
 
 #ifdef LOSCFG_INTERWORK_THUMB
-    taskContext->regPSR = PSR_MODE_SVC_THUMB; /* CPSR (Enable IRQ and FIQ interrupts, THUMNB-mode) */
+    taskContext->regCPSR = PSR_MODE_SVC_THUMB; /* CPSR (Enable IRQ and FIQ interrupts, THUMNB-mode) */
 #else
-    taskContext->regPSR = PSR_MODE_SVC_ARM;   /* CPSR (Enable IRQ and FIQ interrupts, ARM-mode) */
+    taskContext->regCPSR = PSR_MODE_SVC_ARM;   /* CPSR (Enable IRQ and FIQ interrupts, ARM-mode) */
 #endif
 
 #if !defined(LOSCFG_ARCH_FPU_DISABLE)
     /* 0xAAA0000000000000LL : float reg initialed magic word */
-    for (index = 0; index < FP_REGS_NUM; index++) {
+    for (UINT32 index = 0; index < FP_REGS_NUM; index++) {
         taskContext->D[index] = 0xAAA0000000000000LL + index; /* D0 - D31 */
     }
     taskContext->regFPSCR = 0;
@@ -117,58 +103,49 @@ LITE_OS_SEC_TEXT_INIT VOID *OsTaskStackInit(UINT32 taskID, UINT32 stackSize, VOI
     return (VOID *)taskContext;
 }
 
-LITE_OS_SEC_TEXT VOID OsUserCloneParentStack(LosTaskCB *childTaskCB, LosTaskCB *parentTaskCB)
+LITE_OS_SEC_TEXT VOID OsUserCloneParentStack(VOID *childStack, UINTPTR parentTopOfStack, UINT32 parentStackSize)
 {
-    TaskContext *context = (TaskContext *)childTaskCB->stackPointer;
-    VOID *cloneStack = (VOID *)(((UINTPTR)parentTaskCB->topOfStack + parentTaskCB->stackSize) - sizeof(TaskContext));
+    VOID *cloneStack = (VOID *)(((UINTPTR)parentTopOfStack + parentStackSize) - sizeof(TaskContext));
 
-    LOS_ASSERT(parentTaskCB->taskStatus & OS_TASK_STATUS_RUNNING);
-
-    (VOID)memcpy_s(childTaskCB->stackPointer, sizeof(TaskContext), cloneStack, sizeof(TaskContext));
-    context->R[0] = 0;
+    (VOID)memcpy_s(childStack, sizeof(TaskContext), cloneStack, sizeof(TaskContext));
+    ((TaskContext *)childStack)->R0 = 0;
 }
 
-LITE_OS_SEC_TEXT_INIT VOID OsUserTaskStackInit(TaskContext *context, TSK_ENTRY_FUNC taskEntry, UINTPTR stack)
+LITE_OS_SEC_TEXT_INIT VOID OsUserTaskStackInit(TaskContext *context, UINTPTR taskEntry, UINTPTR stack)
 {
     LOS_ASSERT(context != NULL);
 
 #ifdef LOSCFG_INTERWORK_THUMB
-    context->regPSR = PSR_MODE_USR_THUMB;
+    context->regCPSR = PSR_MODE_USR_THUMB;
 #else
-    context->regPSR = PSR_MODE_USR_ARM;
+    context->regCPSR = PSR_MODE_USR_ARM;
 #endif
-    context->R[0] = stack;
-    context->SP = TRUNCATE(stack, LOSCFG_STACK_POINT_ALIGN_SIZE);
-    context->LR = 0;
+    context->R0 = stack;
+    context->USP = TRUNCATE(stack, LOSCFG_STACK_POINT_ALIGN_SIZE);
+    context->ULR = 0;
     context->PC = (UINTPTR)taskEntry;
 }
 
-VOID Sev(VOID)
+VOID OsInitSignalContext(VOID *sp, VOID *signalContext, UINTPTR sigHandler, UINT32 signo, UINT32 param)
 {
-    __asm__ __volatile__ ("sev" : : : "memory");
+    IrqContext *newSp = (IrqContext *)signalContext;
+    (VOID)memcpy_s(signalContext, sizeof(IrqContext), sp, sizeof(IrqContext));
+    newSp->PC = sigHandler;
+    newSp->R0 = signo;
+    newSp->R1 = param;
 }
 
-VOID Wfe(VOID)
-{
-    __asm__ __volatile__ ("wfe" : : : "memory");
-}
-
-VOID Wfi(VOID)
-{
-    __asm__ __volatile__ ("wfi" : : : "memory");
-}
-
-VOID Dmb(VOID)
+DEPRECATED VOID Dmb(VOID)
 {
     __asm__ __volatile__ ("dmb" : : : "memory");
 }
 
-VOID Dsb(VOID)
+DEPRECATED VOID Dsb(VOID)
 {
     __asm__ __volatile__("dsb" : : : "memory");
 }
 
-VOID Isb(VOID)
+DEPRECATED VOID Isb(VOID)
 {
     __asm__ __volatile__("isb" : : : "memory");
 }
@@ -192,8 +169,3 @@ VOID DCacheInvRange(UINT32 start, UINT32 end)
     arm_inv_cache_range(start, end);
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

arch/arm/arm/src/los_hw_exc.S

@@ -47,9 +47,10 @@
     .extern   OsDataAbortExcHandleEntry
 #endif
 #endif
+    .extern OsSaveSignalContext
+    .extern OsRestorSignalContext
     .extern OsArmSharedPageFault
     .extern OsArmA32SyscallHandle
-    .extern LOS_Exit
 
     .global   _osExceptFiqHdl
     .global   _osExceptAddrAbortHdl
@@ -63,7 +64,6 @@
     .global   __stack_chk_guard_setup
 #endif
 
-
     .fpu vfpv4
 
 .macro PUSH_FPU_REGS reg1
@@ -173,67 +173,77 @@ _osExceptUndefInstrHdl:
 #ifdef LOSCFG_GDB
     GDB_HANDLE OsUndefIncExcHandleEntry
 #else
-                                                              @ LR offset to return from this exception:  0.
-    STMFD   SP, {R0-R7}                                       @ Push working registers, but don`t change SP.
+    SRSFD   #CPSR_SVC_MODE!                                   @ Save pc and cpsr to svc sp, ARMv6 and above support
+    MSR     CPSR_c, #(CPSR_INT_DISABLE | CPSR_SVC_MODE)       @ Switch to svc mode, and disable all interrupt
+    STMFD   SP!, {R0-R3, R12, LR}
+    STMFD   SP, {R13, R14}^                                   @ push user sp and lr
+    SUB     SP, SP, #(2 * 4)
+    MOV     R2, #0
+    MOV     R3, #0
+    STMFD   SP!, {R2-R3}                                      @ far and fsr fields, are 0 under this anomaly
+    STMFD   SP!, {R4-R11}
 
     MOV     R0, #OS_EXCEPT_UNDEF_INSTR                        @ Set exception ID to OS_EXCEPT_UNDEF_INSTR.
-
     B       _osExceptDispatch                                 @ Branch to global exception handler.
-
 #endif
 
 @ Description: Software interrupt exception handler
 _osExceptSwiHdl:
-    SUB     SP, SP, #(4 * 16)
-    STMIA   SP, {R0-R12}
-    MRS     R3, SPSR
-    MOV     R4, LR
+    SRSFD   #CPSR_SVC_MODE!                                   @ Save pc and cpsr to svc sp, ARMv6 and above support
+    STMFD   SP!, {R0-R3, R12, LR}
+    STMFD   SP, {R13, R14}^
+    SUB     SP, SP, #(4 * 4)                                  @ push user sp and lr and jump reserved field
+    STR     R7, [SP, #0]                                      @ Save system call number to reserved2 filed
 
-    AND     R1, R3, #CPSR_MASK_MODE                          @ Interrupted mode
-    CMP     R1, #CPSR_USER_MODE                              @ User mode
-    BNE     OsKernelSVCHandler                               @ Branch if not user mode
+#ifdef LOSCFG_KERNEL_SYSCALL
+    LDR     R3, [SP, #(11 * 4)]
+    AND     R1, R3, #CPSR_MASK_MODE                           @ Interrupted mode
+    CMP     R1, #CPSR_USER_MODE                               @ User mode
+    BNE     _osKernelSVCHandler                               @ Branch if not user mode
 
-    @ we enter from user mode, we need get the values of  USER mode r13(sp) and r14(lr).
-    @ stmia with ^ will return the user mode registers (provided that r15 is not in the register list).
+    CMP     R7, #119                                          @ __NR_sigreturn
+    BNE     _osIsSyscall
     MOV     R0, SP
-    STMFD   SP!, {R3}                                        @ Save the CPSR
-    ADD     R3, SP, #(4 * 17)                                @ Offset to pc/cpsr storage
-    STMFD   R3!, {R4}                                        @ Save the CPSR and r15(pc)
-    STMFD   R3, {R13, R14}^                                  @ Save user mode r13(sp) and r14(lr)
-    SUB     SP, SP, #4
+    BLX     OsRestorSignalContext
+    MOV     SP, R0
+    B       _osSyscallReturn
+
+_osIsSyscall:
+    STMFD   SP!, {R4-R11}
+
     PUSH_FPU_REGS R1
 
-    MOV     FP, #0                                           @ Init frame pointer
+    MOV     R0, SP
+    MOV     FP, #0                                            @ Init frame pointer
     CPSIE   I
     BLX     OsArmA32SyscallHandle
     CPSID   I
 
     POP_FPU_REGS R1
-    ADD     SP, SP,#4
-    LDMFD   SP!, {R3}                                        @ Fetch the return SPSR
-    MSR     SPSR_cxsf, R3                                    @ Set the return mode SPSR
+    LDMFD   SP!, {R4-R11}
 
-    @ we are leaving to user mode, we need to restore the values of USER mode r13(sp) and r14(lr).
-    @ ldmia with ^ will return the user mode registers (provided that r15 is not in the register list)
+    MOV     R0, SP
+    SUB     SP, SP, #(12 * 4)                                @ sp - sizeof(IrqContext), reserved for signal
+    MOV     R1, SP
+    BLX     OsSaveSignalContext
+    MOV     SP, R0
 
-    LDMFD   SP!, {R0-R12}
+_osSyscallReturn:
+    LDR     R7, [SP, #0]
+    ADD     SP, SP, #(2 * 4)                                 @ jump reserved filed
     LDMFD   SP, {R13, R14}^                                  @ Restore user mode R13/R14
     ADD     SP, SP, #(2 * 4)
-    LDMFD   SP!, {PC}^                                       @ Return to user
-
-OsKernelSVCHandler:
-    ADD     R0, SP, #(4 * 16)
-    MOV     R5, R0
-    STMFD   R0!, {R4}                                        @ Store PC
-    STMFD   R0!, {R4}
-    STMFD   R0!, {R5}
-
-    STMFD   SP!, {R3}                                        @ Push task`s CPSR (i.e. exception SPSR).
-    SUB     SP, SP, #(4 * 2)                                 @ user sp and lr
+    LDMFD   SP!, {R0-R3, R12, LR}
+    RFEIA   SP!                                              @ Return to user
 
+_osKernelSVCHandler:
+#endif
+    MOV     R0, #0
+    STR     R0, [SP, #0]
+    STR     R0, [SP, #4]
+    STMFD   SP!, {R4-R11}
     MOV     R0, #OS_EXCEPT_SWI                               @ Set exception ID to OS_EXCEPT_SWI.
-
-    B       _osExceptionSwi                                  @ Branch to global exception handler.
+    B       _osExceptDispatch                                @ Branch to global exception handler.
 
 @ Description: Prefectch abort exception handler
 _osExceptPrefetchAbortHdl:
@@ -243,18 +253,37 @@ _osExceptPrefetchAbortHdl:
 #endif
 #else
     SUB     LR, LR, #4                                       @ LR offset to return from this exception: -4.
-    STMFD   SP, {R0-R7}                                      @ Push working registers, but don`t change SP.
-    MOV     R5, LR
-    MRS     R1, SPSR
 
-    MOV     R0, #OS_EXCEPT_PREFETCH_ABORT                    @ Set exception ID to OS_EXCEPT_PREFETCH_ABORT.
+    SRSFD   #CPSR_SVC_MODE!                                  @ Save pc and cpsr to svc sp, ARMv6 and above support
+    MSR     CPSR_c, #(CPSR_INT_DISABLE | CPSR_SVC_MODE)      @ Switch to svc mode, and disable all interrupt
+    STMFD   SP!, {R0-R3, R12, LR}
+    STMFD   SP, {R13, R14}^
+    SUB     SP, SP, #(2 * 4)
 
-    AND     R4, R1, #CPSR_MASK_MODE                          @ Interrupted mode
-    CMP     R4, #CPSR_USER_MODE                              @ User mode
-    BEQ     _osExcPageFault                                   @ Branch if user mode
+    MRC     P15, 0, R2, C6, C0, 2
+    MRC     P15, 0, R3, C5, C0, 1
+    STMFD   SP!, {R2-R3}                                     @ Save far and fsr
+    STMFD   SP!, {R4-R11}
+
+#ifdef LOSCFG_KERNEL_VM
+    LDR     R0, [SP, #(19 * 4)]
+    AND     R0, R0, #CPSR_MASK_MODE                          @ Interrupted mode
+    CMP     R0, #CPSR_USER_MODE                              @ User mode
+    BNE     _osKernelExceptPrefetchAbortHdl
+
+    MOV    R1, SP
+    PUSH_FPU_REGS R0
+
+    MOV    R0, #OS_EXCEPT_PREFETCH_ABORT
+    BLX    OsArmSharedPageFault
+    CMP    R0, #0
+
+    POP_FPU_REGS R0
+    BEQ   _osExcPageFaultReturn
+#endif
 
 _osKernelExceptPrefetchAbortHdl:
-    MOV     LR, R5
+    MOV    R0, #OS_EXCEPT_PREFETCH_ABORT
     B       _osExceptDispatch                                @ Branch to global exception handler.
 #endif
 
@@ -266,117 +295,96 @@ _osExceptDataAbortHdl:
 #endif
 #else
     SUB     LR, LR, #8                                       @ LR offset to return from this exception: -8.
-    STMFD   SP, {R0-R7}                                      @ Push working registers, but don`t change SP.
-    MOV     R5, LR
-    MRS     R1, SPSR
 
-    MOV     R0, #OS_EXCEPT_DATA_ABORT                        @ Set exception ID to OS_EXCEPT_DATA_ABORT.
+    SRSFD   #CPSR_SVC_MODE!                                  @ Save pc and cpsr to svc sp, ARMv6 and above support
+    MSR     CPSR_c, #(CPSR_INT_DISABLE | CPSR_SVC_MODE)      @ Switch to svc mode, and disable all interrupt
+    STMFD   SP!, {R0-R3, R12, LR}
+    STMFD   SP, {R13, R14}^
+    SUB     SP, SP, #(2 * 4)
 
-    B     _osExcPageFault
+    MRC     P15, 0, R2, C6, C0, 0
+    MRC     P15, 0, R3, C5, C0, 0
+    STMFD   SP!, {R2-R3}                                     @ Save far and fsr
+    STMFD   SP!, {R4-R11}
+
+#ifdef LOSCFG_KERNEL_VM
+    MOV    R1, SP
+    PUSH_FPU_REGS R0
+
+    MOV    R0, #OS_EXCEPT_DATA_ABORT                        @ Set exception ID to OS_EXCEPT_DATA_ABORT.
+    BLX    OsArmSharedPageFault
+    CMP    R0, #0
+    POP_FPU_REGS R0
+    BEQ   _osExcPageFaultReturn
+#endif
+
+    MOV   R0, #OS_EXCEPT_DATA_ABORT
+    B     _osExceptDispatch
+#endif
+
+#ifdef LOSCFG_KERNEL_VM
+_osExcPageFaultReturn:
+    LDMFD  SP!, {R4-R11}
+    ADD    SP, SP, #(2 * 4)
+    LDMFD  SP, {R13, R14}^
+    ADD    SP, SP, #(2 * 4)                                  @ Jump reserved fileds
+    LDMFD  SP!, {R0-R3, R12, LR}
+    RFEIA  SP!
 #endif
 
 @ Description: Address abort exception handler
 _osExceptAddrAbortHdl:
     SUB     LR, LR, #8                                       @ LR offset to return from this exception: -8.
-    STMFD   SP, {R0-R7}                                      @ Push working registers, but don`t change SP.
+
+    SRSFD   #CPSR_SVC_MODE!                                  @ Save pc and cpsr to svc sp, ARMv6 and above support
+    MSR     CPSR_c, #(CPSR_INT_DISABLE | CPSR_SVC_MODE)      @ Switch to svc mode, and disable all interrupt
+    STMFD   SP!, {R0-R3, R12, LR}
+    STMFD   SP, {R13, R14}^
+    SUB     SP, SP, #(2 * 4)
+
+    MOV     R2, #0
+    MOV     R3, #0
+    STMFD   SP!, {R2-R3}                                     @ far and fsr fields, are 0 under this anomaly
+    STMFD   SP!, {R4-R11}
 
     MOV     R0, #OS_EXCEPT_ADDR_ABORT                        @ Set exception ID to OS_EXCEPT_ADDR_ABORT.
-
     B       _osExceptDispatch                                @ Branch to global exception handler.
 
 @ Description: Fast interrupt request exception handler
 _osExceptFiqHdl:
     SUB     LR, LR, #4                                       @ LR offset to return from this exception: -4.
-    STMFD   SP, {R0-R7}                                      @ Push working registers.
 
-    MOV     R0, #OS_EXCEPT_FIQ                               @ Set exception ID to OS_EXCEPT_FIQ.
+    SRSFD   #CPSR_SVC_MODE!                                  @ Save pc and cpsr to svc sp, ARMv6 and above support
+    MSR     CPSR_c, #(CPSR_INT_DISABLE | CPSR_SVC_MODE)      @ Switch to svc mode, and disable all interrupt
+    STMFD   SP!, {R0-R3, R12, LR}
+    STMFD   SP, {R13, R14}^
+    SUB     SP, SP, #(2 * 4)
 
-    B       _osExceptDispatch                                @ Branch to global exception handler.
-
-_osExcPageFault:
-    SUB     R3, SP, #(8 * 4)                                 @ Save the start address of working registers.
-    MSR     CPSR_c, #(CPSR_INT_DISABLE | CPSR_SVC_MODE)      @ Switch to SVC mode, and disable all interrupts
-    MOV     R2, SP
-    STMFD   SP!, {R5}                                        @ Push original PC
-    STMFD   SP!, {LR}                                        @ Push original svc LR
-    STMFD   SP!, {R2}                                        @ Push original svc SP
-    STMFD   SP!, {R8-R12}                                    @ Push original R12-R8,
-    LDMFD   R3!, {R4-R11}                                    @ Move original R7-R0 from exception stack to original stack.
+    MOV     R2, #0
+    MOV     R3, #0
+    STMFD   SP!, {R2-R3}                                     @ far and fsr fields, are 0 under this anomaly
     STMFD   SP!, {R4-R11}
-    STMFD   SP!, {R1}
-    SUB     SP, SP, #8
-    STMIA   SP, {R13, R14}^                                  @ Save user mode r13(sp) and r14(lr)
-
-    MOV     R4, SP
-    BIC     SP, SP, #7
-    PUSH_FPU_REGS R1
-
-    CMP     R0, #OS_EXCEPT_DATA_ABORT
-    BNE     1f
-    MRC     P15, 0, R2, C6, C0, 0
-    MRC     P15, 0, R3, C5, C0, 0
-    B       2f
-1:  MRC     P15, 0, R2, C6, C0, 2
-    MRC     P15, 0, R3, C5, C0, 1
-
-2:  MOV     R1, R4
-    MOV     R5, R0
-    MOV     R8, R2
-    MOV     R9, R3
-    CPSIE   I
-    BLX     OsArmSharedPageFault
-    CPSID   I
-
-    POP_FPU_REGS R1
-    MOV     SP, R4
-    CMP     R0, #0
-    BEQ     _OsExcReturn
-
-    MOV     R0, R5                                           @ exc type
-    B       _osExceptionSwi
 
 @ Description: Exception handler
 @ Parameter  : R0     Exception Type
 @ Regs Hold  : R3     Exception`s CPSR
 _osExceptDispatch:
-    MRS     R2, SPSR                                         @ Save CPSR before exception.
-    MOV     R1, LR                                           @ Save PC before exception.
-    SUB     R3, SP, #(8 * 4)                                 @ Save the start address of working registers.
+    LDR     R8, [SP, #(8 * 4)]                               @ Get far
+    LDR     R9, [SP, #(9 * 4)]                               @ Get fsr
 
-    MSR     CPSR_c, #(CPSR_INT_DISABLE | CPSR_SVC_MODE)      @ Switch to SVC mode, and disable all interrupts
-    MOV     R5, SP
-    EXC_SP_SET __exc_stack_top, OS_EXC_STACK_SIZE, R6, R7
+    ADD     R2, SP, #(20 * 4)                                @ sp + sizeof(ExcContext), position of SVC stack before exception
+    STR     R2, [SP, #(8 * 4)]                               @ Save svc sp
 
-    STMFD   SP!, {R1}                                        @ Push Exception PC
-    STMFD   SP!, {LR}                                        @ Push SVC LR
-    STMFD   SP!, {R5}                                        @ Push SVC SP
-    STMFD   SP!, {R8-R12}                                    @ Push original R12-R8,
-    LDMFD   R3!, {R4-R11}                                    @ Move original R7-R0 from exception stack to original stack.
-    STMFD   SP!, {R4-R11}
-    STMFD   SP!, {R2}                                        @ Push task`s CPSR (i.e. exception SPSR).
+    MOV     R1, SP
 
-    CMP     R0, #OS_EXCEPT_DATA_ABORT
-    BNE     1f
-    MRC     P15, 0, R8, C6, C0, 0
-    MRC     P15, 0, R9, C5, C0, 0
-    B       3f
-1:  CMP     R0, #OS_EXCEPT_PREFETCH_ABORT
-    BNE     2f
-    MRC     P15, 0, R8, C6, C0, 2
-    MRC     P15, 0, R9, C5, C0, 1
-    B       3f
-2:  MOV     R8, #0
-    MOV     R9, #0
-
-3:  AND     R2, R2, #CPSR_MASK_MODE
+#ifdef LOSCFG_KERNEL_VM
+    LDR     R2, [SP, #(19 * 4)]                              @ Get CPSR
+    AND     R2, R2, #CPSR_MASK_MODE                          @ Interrupted mode
     CMP     R2, #CPSR_USER_MODE                              @ User mode
-    BNE     4f
-    STMFD   SP, {R13, R14}^                                  @ save user mode sp and lr
-4:
-    SUB     SP, SP, #(4 * 2)
+    BEQ     _osExceptionGetSP
+#endif
 
-_osExceptionSwi:
-    MOV     R1, SP                                            @ The second argument to the exception
+    EXC_SP_SET __exc_stack_top, OS_EXC_STACK_SIZE, R6, R7
 
     MRC     P15, 0, R4, C0, C0, 5
     AND     R4, R4, #MPIDR_CPUID_MASK                         @ Get Current cpu id
@@ -405,19 +413,4 @@ _osExceptionGetSP:
     LDR     R5, =OsExcHandleEntry                             @ OsExcHandleEntry(UINT32 excType, ExcContext * excBufAddr)
     BX      R5
 
-_OsExcReturn:
-    LDR     R0, [SP, #(2 * 4)]
-    AND     R0, R0,  #CPSR_MASK_MODE
-    CMP     R0, #CPSR_USER_MODE                               @ User mode
-    BNE     _OsExcReturnToKernel
-    LDMFD   SP, {R13, R14}^                                   @ load user mode sp and lr
-
-_OsExcReturnToKernel:
-    ADD     SP, SP, #(2 * 4)
-    LDMFD   SP!, {R1}
-    MSR     SPSR_cxsf, R1                                     @ Set the return mode SPSR
-    LDMFD   SP!, {R0-R12}
-    ADD     SP, SP, #4
-    LDMFD   SP!, {LR, PC}^
-
     .end

arch/arm/arm/src/los_hw_tick.c

@@ -32,11 +32,6 @@
 #include "los_sys_pri.h"
 #include "los_hwi.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 LITE_OS_SEC_TEXT_INIT UINT32 OsTickInit(UINT32 systemClock, UINT32 tickPerSecond)
 {
@@ -65,10 +60,8 @@ LITE_OS_SEC_TEXT_MINOR VOID LOS_GetCpuCycle(UINT32 *highCnt, UINT32 *lowCnt)
 
 LITE_OS_SEC_TEXT_MINOR UINT64 LOS_CurrNanosec(VOID)
 {
-    DOUBLE nanos;
-
-    nanos = (DOUBLE)HalClockGetCycles() * OS_SYS_NS_PER_SECOND / g_sysClock;
-    return (UINT64)nanos;
+    UINT64 cycle = HalClockGetCycles();
+    return (cycle / g_sysClock) * OS_SYS_NS_PER_SECOND + (cycle % g_sysClock) * OS_SYS_NS_PER_SECOND / g_sysClock;
 }
 
 LITE_OS_SEC_TEXT_MINOR VOID LOS_Udelay(UINT32 usecs)
@@ -81,8 +74,3 @@ LITE_OS_SEC_TEXT_MINOR VOID LOS_Mdelay(UINT32 msecs)
     HalDelayUs(msecs * 1000); /* 1000 : 1ms = 1000us */
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

arch/arm/arm/src/los_hwi.c

@@ -37,11 +37,6 @@
 #endif
 #include "los_sched_pri.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 /* spinlock for hwi module, only available on SMP mode */
 LITE_OS_SEC_BSS  SPIN_LOCK_INIT(g_hwiSpin);
@@ -352,8 +347,3 @@ LITE_OS_SEC_TEXT_INIT UINT32 LOS_HwiDelete(HWI_HANDLE_T hwiNum, HwiIrqParam *irq
     return ret;
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

arch/arm/arm/src/startup/reset_vector_mp.S

@@ -37,17 +37,9 @@
 
 
     .global __exc_stack_top
-    .global __irq_stack_top
-    .global __fiq_stack_top
     .global __svc_stack_top
-    .global __abt_stack_top
-    .global __undef_stack_top
     .global __exc_stack
-    .global __irq_stack
-    .global __fiq_stack
     .global __svc_stack
-    .global __abt_stack
-    .global __undef_stack
 
     .extern __bss_start
     .extern __bss_end
@@ -115,9 +107,9 @@ __exception_handlers:
     .global reset_vector
     .type   reset_vector,function
 
-#ifdef LOSCFG_QUICK_START
+#ifdef LOSCFG_BOOTENV_RAM
 __quickstart_args_start:
-    .fill 512,1,0
+    .fill LOSCFG_BOOTENV_RAMSIZE,1,0
 __quickstart_args_end:
 
 .global OsGetArgsAddr
@@ -184,6 +176,7 @@ reloc_img_to_bottom_loop:
     sub     r11, r11, r12                       /* r11: eventual address offset */
 
 reloc_img_to_bottom_done:
+#ifdef LOSCFG_KERNEL_MMU
     ldr     r4, =g_firstPageTable               /* r4: physical address of translation table and clear it */
     add     r4, r4, r11
     mov     r0, r4
@@ -212,41 +205,20 @@ reloc_img_to_bottom_done:
     str     r12, [r4, r7, lsr #(20 - 2)]        /* jumpTable[paIndex] = pt entry */
     rsb     r7, r11, r6, lsl #20                /* r7: va */
     str     r12, [r4, r7, lsr #(20 - 2)]        /* jumpTable[vaIndex] = pt entry */
-
+#endif
     bl      _bootaddr_setup
-
+#ifdef LOSCFG_KERNEL_MMU
     bl      mmu_setup                           /* set up the mmu */
-
+#endif
     /* clear out the interrupt and exception stack and set magic num to check the overflow */
-    ldr     r0, =__undef_stack
+    ldr     r0, =__svc_stack
     ldr     r1, =__exc_stack_top
     bl      stack_init
 
-    STACK_MAGIC_SET __undef_stack, #OS_EXC_UNDEF_STACK_SIZE, OS_STACK_MAGIC_WORD
-    STACK_MAGIC_SET __abt_stack, #OS_EXC_ABT_STACK_SIZE, OS_STACK_MAGIC_WORD
-    STACK_MAGIC_SET __irq_stack, #OS_EXC_IRQ_STACK_SIZE, OS_STACK_MAGIC_WORD
-    STACK_MAGIC_SET __fiq_stack, #OS_EXC_FIQ_STACK_SIZE, OS_STACK_MAGIC_WORD
     STACK_MAGIC_SET __svc_stack, #OS_EXC_SVC_STACK_SIZE, OS_STACK_MAGIC_WORD
     STACK_MAGIC_SET __exc_stack, #OS_EXC_STACK_SIZE, OS_STACK_MAGIC_WORD
 
 warm_reset:
-    /* initialize interrupt/exception environments */
-    mov    r0, #(CPSR_IRQ_DISABLE |CPSR_FIQ_DISABLE|CPSR_IRQ_MODE)
-    msr    cpsr, r0
-    EXC_SP_SET __irq_stack_top, #OS_EXC_IRQ_STACK_SIZE
-
-    mov    r0, #(CPSR_IRQ_DISABLE|CPSR_FIQ_DISABLE|CPSR_UNDEF_MODE)
-    msr    cpsr, r0
-    EXC_SP_SET __undef_stack_top, #OS_EXC_UNDEF_STACK_SIZE
-
-    mov    r0, #(CPSR_IRQ_DISABLE|CPSR_FIQ_DISABLE|CPSR_ABT_MODE)
-    msr    cpsr, r0
-    EXC_SP_SET __abt_stack_top, #OS_EXC_ABT_STACK_SIZE
-
-    mov    r0, #(CPSR_IRQ_DISABLE|CPSR_FIQ_DISABLE|CPSR_FIQ_MODE)
-    msr    cpsr, r0
-    EXC_SP_SET __fiq_stack_top, #OS_EXC_FIQ_STACK_SIZE
-
     /* initialize CPSR (machine state register) */
     mov    r0, #(CPSR_IRQ_DISABLE|CPSR_FIQ_DISABLE|CPSR_SVC_MODE)
     msr    cpsr, r0
@@ -294,7 +266,7 @@ clear_bss:
 
 _start_hang:
     b      _start_hang
-
+#ifdef LOSCFG_KERNEL_MMU
 mmu_setup:
     mov     r12, #0
     mcr     p15, 0, r12, c8, c7, 0              /* Set c8 to control the TLB and set the mapping to invalid */
@@ -330,7 +302,7 @@ mmu_setup:
     isb
     sub     lr,  r11                            /* adjust lr with delta of physical address and virtual address */
     bx      lr
-
+#endif
     .code  32
 
     .global reset_platform
@@ -346,6 +318,7 @@ reset_platform:
     mov    pc, r0   // Jump to reset vector
 #endif
 cpu_start:
+#ifdef LOSCFG_KERNEL_MMU
     ldr     r4, =g_firstPageTable               /* r4 = physical address of translation table and clear it */
     add     r4, r4, r11
     orr     r8, r4, #MMU_TTBRx_FLAGS
@@ -356,6 +329,7 @@ cpu_start:
     add     r4, r4, r11                         /* r4 = tt_trampoline paddr */
 
     bl     mmu_setup
+#endif
     bl     secondary_cpu_start
     b      .
 
@@ -394,6 +368,7 @@ sp_set:
  * r10: flags
  * r9 and r12 will be used as variable
  */
+#ifdef LOSCFG_KERNEL_MMU
 page_table_build:
     mov     r9, r6
     bfc     r9, #20, #12                        /* r9: pa % MB */
@@ -412,7 +387,7 @@ page_table_build_loop:
     subs    r8, #1                              /* sizes-- */
     bne     page_table_build_loop
     bx      lr
-
+#endif
 /*
  * init stack to initial value
  * r0 is stack mem start, r1 is stack mem end
@@ -465,6 +440,7 @@ _bootaddr_setup:
 
     bx      lr
 
+#ifdef LOSCFG_KERNEL_MMU
 memset_optimized:
     mov     r3, r0
     vdup.8  q0, r1
@@ -476,7 +452,7 @@ memset_optimized_loop:
     vstmia  r3!, {d0 - d7}
     bge     memset_optimized_loop
     bx      lr
-
+#endif
 init_done:
     .long  0xDEADB00B
 
@@ -493,22 +469,6 @@ init_flag:
     .section ".int_stack", "wa", %nobits
     .align  3
 
-__undef_stack:
-    .space OS_EXC_UNDEF_STACK_SIZE * CORE_NUM
-__undef_stack_top:
-
-__abt_stack:
-    .space OS_EXC_ABT_STACK_SIZE * CORE_NUM
-__abt_stack_top:
-
-__irq_stack:
-    .space OS_EXC_IRQ_STACK_SIZE * CORE_NUM
-__irq_stack_top:
-
-__fiq_stack:
-    .space OS_EXC_FIQ_STACK_SIZE * CORE_NUM
-__fiq_stack_top:
-
 __svc_stack:
     .space OS_EXC_SVC_STACK_SIZE * CORE_NUM
 __svc_stack_top:

arch/arm/arm/src/startup/reset_vector_up.S

@@ -38,17 +38,9 @@
 
 
     .global __exc_stack_top
-    .global __irq_stack_top
-    .global __fiq_stack_top
     .global __svc_stack_top
-    .global __abt_stack_top
-    .global __undef_stack_top
     .global __exc_stack
-    .global __irq_stack
-    .global __fiq_stack
     .global __svc_stack
-    .global __abt_stack
-    .global __undef_stack
 
     .extern __bss_start
     .extern __bss_end
@@ -161,6 +153,7 @@ reloc_img_to_bottom_loop:
     sub     r11, r11, r12                       /* r11: eventual address offset */
 
 reloc_img_to_bottom_done:
+#ifdef LOSCFG_KERNEL_MMU
     ldr     r4, =g_firstPageTable               /* r4: physical address of translation table and clear it */
     add     r4, r4, r11
     mov     r0, r4
@@ -168,7 +161,6 @@ reloc_img_to_bottom_done:
     mov     r2, #MMU_DESCRIPTOR_L1_SMALL_ENTRY_NUMBERS
     bl      memset_optimized                    /* optimized memset since r0 is 64-byte aligned */
 
-
     PAGE_TABLE_SET SYS_MEM_BASE, KERNEL_VMM_BASE, KERNEL_VMM_SIZE, MMU_DESCRIPTOR_KERNEL_L1_PTE_FLAGS
     PAGE_TABLE_SET SYS_MEM_BASE, UNCACHED_VMM_BASE, UNCACHED_VMM_SIZE, MMU_INITIAL_MAP_NORMAL_NOCACHE
     PAGE_TABLE_SET PERIPH_PMM_BASE, PERIPH_DEVICE_BASE, PERIPH_DEVICE_SIZE, MMU_INITIAL_MAP_DEVICE
@@ -192,7 +184,7 @@ reloc_img_to_bottom_done:
     str     r12, [r4, r7, lsr #(20 - 2)]        /* jumpTable[vaIndex] = pt entry */
 
     bl      mmu_setup                           /* set up the mmu */
-
+#endif
     /* get cpuid and keep it in r11 */
     mrc     p15, 0, r11, c0, c0, 5
     and     r11, r11, #MPIDR_CPUID_MASK
@@ -201,36 +193,15 @@ reloc_img_to_bottom_done:
 
 excstatck_loop:
     /* clear out the interrupt and exception stack and set magic num to check the overflow */
-    ldr     r0, =__undef_stack
+    ldr     r0, =__svc_stack
     ldr     r1, =__exc_stack_top
     bl      stack_init
 
-    STACK_MAGIC_SET __undef_stack, #OS_EXC_UNDEF_STACK_SIZE, OS_STACK_MAGIC_WORD
-    STACK_MAGIC_SET __abt_stack, #OS_EXC_ABT_STACK_SIZE, OS_STACK_MAGIC_WORD
-    STACK_MAGIC_SET __irq_stack, #OS_EXC_IRQ_STACK_SIZE, OS_STACK_MAGIC_WORD
-    STACK_MAGIC_SET __fiq_stack, #OS_EXC_FIQ_STACK_SIZE, OS_STACK_MAGIC_WORD
     STACK_MAGIC_SET __svc_stack, #OS_EXC_SVC_STACK_SIZE, OS_STACK_MAGIC_WORD
     STACK_MAGIC_SET __exc_stack, #OS_EXC_STACK_SIZE, OS_STACK_MAGIC_WORD
 
 excstatck_loop_done:
 warm_reset:
-    /* initialize interrupt/exception environments */
-    mov    r0, #(CPSR_IRQ_DISABLE |CPSR_FIQ_DISABLE|CPSR_IRQ_MODE)
-    msr    cpsr, r0
-    EXC_SP_SET __irq_stack_top, #OS_EXC_IRQ_STACK_SIZE
-
-    mov    r0, #(CPSR_IRQ_DISABLE|CPSR_FIQ_DISABLE|CPSR_UNDEF_MODE)
-    msr    cpsr, r0
-    EXC_SP_SET __undef_stack_top, #OS_EXC_UNDEF_STACK_SIZE
-
-    mov    r0, #(CPSR_IRQ_DISABLE|CPSR_FIQ_DISABLE|CPSR_ABT_MODE)
-    msr    cpsr, r0
-    EXC_SP_SET __abt_stack_top, #OS_EXC_ABT_STACK_SIZE
-
-    mov    r0, #(CPSR_IRQ_DISABLE|CPSR_FIQ_DISABLE|CPSR_FIQ_MODE)
-    msr    cpsr, r0
-    EXC_SP_SET __fiq_stack_top, #OS_EXC_FIQ_STACK_SIZE
-
     /* initialize CPSR (machine state register) */
     mov    r0, #(CPSR_IRQ_DISABLE|CPSR_FIQ_DISABLE|CPSR_SVC_MODE)
     msr    cpsr, r0
@@ -287,6 +258,7 @@ clear_bss:
 _start_hang:
     b      _start_hang
 
+#ifdef LOSCFG_KERNEL_MMU
 mmu_setup:
     mov     r12, #0
     mcr     p15, 0, r12, c8, c7, 0              /* Set c8 to control the TLB and set the mapping to invalid */
@@ -323,7 +295,7 @@ mmu_setup:
 
     sub     lr,  r11                            /* adjust lr with delta of physical address and virtual address */
     bx      lr
-
+#endif
     .code  32
 
     .global reset_platform
@@ -362,6 +334,7 @@ sp_set:
  * r10: flags
  * r9 and r12 will be used as variable
  */
+#ifdef LOSCFG_KERNEL_MMU
 page_table_build:
     mov     r9, r6
     bfc     r9, #20, #12                        /* r9: pa % MB */
@@ -380,7 +353,7 @@ page_table_build_loop:
     subs    r8, #1                              /* sizes-- */
     bne     page_table_build_loop
     bx      lr
-
+#endif
 /*
  * init stack to initial value
  * r0 is stack mem start, r1 is stack mem end
@@ -433,6 +406,7 @@ _bootaddr_setup:
 
     bx      lr
 
+#ifdef LOSCFG_KERNEL_MMU
 memset_optimized:
     mov     r3, r0
     vdup.8  q0, r1
@@ -444,7 +418,7 @@ memset_optimized_loop:
     vstmia  r3!, {d0 - d7}
     bge     memset_optimized_loop
     bx      lr
-
+#endif
 init_done:
     .long  0xDEADB00B
 
@@ -461,22 +435,6 @@ init_flag:
     .section ".int_stack", "wa", %nobits
     .align  3
 
-__undef_stack:
-    .space OS_EXC_UNDEF_STACK_SIZE * CORE_NUM
-__undef_stack_top:
-
-__abt_stack:
-    .space OS_EXC_ABT_STACK_SIZE * CORE_NUM
-__abt_stack_top:
-
-__irq_stack:
-    .space OS_EXC_IRQ_STACK_SIZE * CORE_NUM
-__irq_stack_top:
-
-__fiq_stack:
-    .space OS_EXC_FIQ_STACK_SIZE * CORE_NUM
-__fiq_stack_top:
-
 __svc_stack:
     .space OS_EXC_SVC_STACK_SIZE * CORE_NUM
 __svc_stack_top:

arch/arm/arm/src/strncpy_from_user.c

@@ -33,11 +33,6 @@
 #include "los_user_get.h"
 #include "los_vm_map.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 INT32 LOS_StrncpyFromUser(CHAR *dst, const CHAR *src, INT32 count)
 {
@@ -67,8 +62,3 @@ INT32 LOS_StrncpyFromUser(CHAR *dst, const CHAR *src, INT32 count)
     return offset;
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

arch/arm/arm/src/strnlen_user.c

@@ -33,11 +33,6 @@
 #include "los_user_get.h"
 #include "los_vm_map.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 INT32 LOS_StrnlenUser(const CHAR *src, INT32 count)
 {
@@ -66,8 +61,3 @@ INT32 LOS_StrnlenUser(const CHAR *src, INT32 count)
     return count + 1;
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

arch/arm/arm/src/user_copy.c

@@ -35,11 +35,6 @@
 #include "los_memory.h"
 #include "los_vm_map.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 size_t arch_copy_from_user(void *dst, const void *src, size_t len)
 {
@@ -114,9 +109,4 @@ INT32 LOS_UserMemClear(unsigned char *buf, UINT32 len)
     return ret;
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 

arch/arm/gic/Makefile

@@ -0,0 +1,48 @@
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this list of
+#    conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+#    of conditions and the following disclaimer in the documentation and/or other materials
+#    provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors may be used
+#    to endorse or promote products derived from this software without specific prior written
+#    permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+include $(LITEOSTOPDIR)/config.mk
+
+MODULE_NAME := $(notdir $(shell pwd))
+
+# LOCAL_SRCS := $(wildcard *.c)
+
+ifeq ($(LOSCFG_ARCH_GIC_V2), y)
+LOCAL_SRCS := gic_v2.c
+else ifeq ($(LOSCFG_ARCH_GIC_V3), y)
+LOCAL_SRCS := gic_v3.c
+endif
+
+LOCAL_INCLUDE := \
+	-I $(LITEOSTOPDIR)/kernel/base/include \
+	-I $(LITEOSTOPDIR)/arch/arm/include \
+	-I $(LITEOSTOPDIR)/arch/arm/arm/src/include \
+
+LOCAL_FLAGS := $(LOCAL_INCLUDE)
+include $(MODULE)

arch/arm/gic/gic_v2.c

@@ -30,12 +30,13 @@
  */
 
 #include "gic_common.h"
+#include "los_hwi.h"
 #include "los_hwi_pri.h"
 #include "los_mp.h"
 
 STATIC_ASSERT(OS_USER_HWI_MAX <= 1020, "hwi max is too large!");
 
-#ifdef LOSCFG_PLATFORM_BSP_GIC_V2
+#ifdef LOSCFG_ARCH_GIC_V2
 
 STATIC UINT32 g_curIrqNum = 0;
 

arch/arm/gic/gic_v3.c

@@ -32,10 +32,11 @@
 #include "gic_common.h"
 #include "gic_v3.h"
 #include "los_typedef.h"
+#include "los_hwi.h"
 #include "los_hwi_pri.h"
 #include "los_mp.h"
 
-#ifdef LOSCFG_PLATFORM_BSP_GIC_V3
+#ifdef LOSCFG_ARCH_GIC_V3
 
 STATIC UINT32 g_curIrqNum = 0;
 

arch/arm/include/gic_common.h

@@ -47,7 +47,7 @@ enum {
 #define GIC_REV_MASK                    0xF0
 #define GIC_REV_OFFSET                  0x4
 
-#ifdef LOSCFG_PLATFORM_BSP_GIC_V2
+#ifdef LOSCFG_ARCH_GIC_V2
 #define GICC_CTLR                       (GICC_OFFSET + 0x00)            /* CPU Interface Control Register */
 #define GICC_PMR                        (GICC_OFFSET + 0x04)            /* Interrupt Priority Mask Register */
 #define GICC_BPR                        (GICC_OFFSET + 0x08)            /* Binary Point Register */
@@ -76,7 +76,7 @@ enum {
 #define GICD_PIDR2V2                    (GICD_OFFSET + 0xfe8)
 #define GICD_PIDR2V3                    (GICD_OFFSET + 0xffe8)
 
-#ifdef LOSCFG_PLATFORM_BSP_GIC_V3
+#ifdef LOSCFG_ARCH_GIC_V3
 #define GICD_IGRPMODR(n)                (GICD_OFFSET + 0x0d00 + (n) * 4) /* Interrupt Group Mode Reisters */
 #define GICD_IROUTER(n)                 (GICD_OFFSET + 0x6000 + (n) * 8) /* Interrupt Rounter Reisters */
 #endif

arch/arm/include/los_exc.h

@@ -63,26 +63,29 @@ typedef struct {
     UINT64 SPSR;
 } ExcContext;
 #else
+/* It has the same structure as TaskContext */
 typedef struct {
-    UINT32 USP;     /**< User mode stack pointer */
-    UINT32 ULR;     /**< User mode program returning address */
-    UINT32 regCPSR; /**< Current program status register (CPSR) */
+    UINT32 R4;
+    UINT32 R5;
+    UINT32 R6;
+    UINT32 R7;
+    UINT32 R8;
+    UINT32 R9;
+    UINT32 R10;
+    UINT32 R11;
+
+    UINT32 SP;       /**< svc sp */
+    UINT32 reserved; /**< Reserved, multiplexing register */
+    UINT32 USP;
+    UINT32 ULR;
     UINT32 R0;      /**< Register R0 */
     UINT32 R1;      /**< Register R1 */
     UINT32 R2;      /**< Register R2 */
     UINT32 R3;      /**< Register R3 */
-    UINT32 R4;      /**< Register R4 */
-    UINT32 R5;      /**< Register R5 */
-    UINT32 R6;      /**< Register R6 */
-    UINT32 R7;      /**< Register R7 */
-    UINT32 R8;      /**< Register R8 */
-    UINT32 R9;      /**< Register R9 */
-    UINT32 R10;     /**< Register R10 */
-    UINT32 R11;     /**< Register R11 */
     UINT32 R12;     /**< Register R12 */
-    UINT32 SP;      /**< Stack pointer */
     UINT32 LR;      /**< Program returning address. */
     UINT32 PC;      /**< PC pointer of the exceptional function */
+    UINT32 regCPSR;
 } ExcContext;
 #endif
 
@@ -183,7 +186,7 @@ extern UINT32 LOS_ExcRegHook(EXC_PROC_FUNC excHook);
  * los_exc.h: the header file that contains the API declaration.
  * @see None.
  */
-VOID LOS_Panic(const CHAR *fmt, ...);
+NORETURN VOID LOS_Panic(const CHAR *fmt, ...);
 
 /**
  * @ingroup los_exc

arch/arm/include/los_hw.h

@@ -77,134 +77,6 @@ extern UINT64 g_cpuMap[];
 #define CPU_MAP_GET(cpuid)          g_cpuMap[(cpuid)]
 #define CPU_MAP_SET(cpuid, hwid)    g_cpuMap[(cpuid)] = (hwid)
 
-/**
- * @ingroup los_hw
- * @brief Set Event.
- *
- * @par Description:
- * <ul>
- * <li>This API is used to send an event to all cores within a muti-processor system.</li>
- * </ul>
- * @attention
- * <ul>
- * <li>This API is not implemented.</li>
- * </ul>
- *
- * @param None.
- *
- * @retval #None.
- *
- * @par Dependency:
- * los_hw.h: the header file that contains the API declaration.
- * @see wfe.
- */
-extern VOID Sev(VOID);
-
-/**
- * @ingroup los_hw
- * @brief Wait for event.
- *
- * @par Description:
- * <ul>
- * <li>This API is used to suspend execution until events occurs if the event register is not set.</li>
- * </ul>
- * @attention
- * <ul>
- * <li>This API is not implemented.</li>
- * </ul>
- *
- * @param None.
- *
- * @retval #None.
- *
- * @par Dependency:
- * los_hw.h: the header file that contains the API declaration.
- * @see sev.
- */
-extern VOID Wfe(VOID);
-
-/**
- * @ingroup los_hw
- * @brief Wait for interrupt.
- *
- * @par Description:
- * <ul>
- * <li>This API is used to suspend execution until interrupt or a debug request occurs.</li>
- * </ul>
- * @attention None.
- *
- * @param None.
- *
- * @retval #None.
- *
- * @par Dependency:
- * los_hw.h: the header file that contains the API declaration.
- * @see None.
- */
-extern VOID Wfi(VOID);
-
-/**
- * @ingroup los_hw
- * @brief Data Memory Barrier.
- *
- * @par Description:
- * <ul>
- * <li>This API is used as a memory barrier</li>
- * </ul>
- * @attention None.
- *
- * @param None.
- *
- * @retval #None.
- *
- * @par Dependency:
- * los_hw.h: the header file that contains the API declaration.
- * @see None.
- */
-extern VOID Dmb(VOID);
-
-/**
- * @ingroup los_hw
- * @brief Data Synchronization Barrier.
- *
- * @par Description:
- * <ul>
- * <li>This API is used as a special kind of memory barrier</li>
- * </ul>
- * @attention None.
- *
- * @param None.
- *
- * @retval #None.
- *
- * @par Dependency:
- * los_hw.h: the header file that contains the API declaration.
- * @see None.
- */
-extern VOID Dsb(VOID);
-
-/**
- * @ingroup los_hw
- * @brief Instruction Synchronization Barrier.
- *
- * @par Description:
- * <ul>
- * <li>This API is used to flush the pipeline in the processor,
- * so that all instructions following the ISB are fetched from cache or memory,
- * after the instruction has been completed.</li>
- * </ul>
- * @attention None.
- *
- * @param None.
- *
- * @retval #None.
- *
- * @par Dependency:
- * los_hw.h: the header file that contains the API declaration.
- * @see None.
- */
-extern VOID Isb(VOID);
-
 /**
  * @ingroup los_hw
  * @brief Invalidate instruction cache.

arch/arm/include/los_sys_stack_pri.h

@@ -44,19 +44,11 @@ extern "C" {
 extern UINTPTR __stack_startup;
 extern UINTPTR __stack_startup_top;
 #else
-extern UINTPTR __fiq_stack_top;
 extern UINTPTR __svc_stack_top;
-extern UINTPTR __abt_stack_top;
-extern UINTPTR __undef_stack_top;
 extern UINTPTR __exc_stack_top;
-extern UINTPTR __fiq_stack;
 extern UINTPTR __svc_stack;
-extern UINTPTR __abt_stack;
-extern UINTPTR __undef_stack;
 extern UINTPTR __exc_stack;
 #endif
-extern UINTPTR __irq_stack_top;
-extern UINTPTR __irq_stack;
 
 #ifdef __cplusplus
 #if __cplusplus

build.sh

@@ -38,22 +38,22 @@ outdir="../..$3/test_info/gen/kernel/test"
 if [ "$5" = "tee" ]; then
     tee="_tee"
 fi
-product_name="$(basename $7)"
-source="tools/build/config/${product_name}_release.config"
+productName="$(basename $7)"
+source="tools/build/config/${productName}_release.config"
 if [ "$2" = "clang" ]; then
     if [ "$4" = "debug" ]; then
-        config_file="${product_name}_$2$tee.config"
+        config_file="${productName}_$2$tee.config"
         source="tools/build/config/debug/$config_file"
     else
-        config_file="${product_name}_$2_release$tee.config"
+        config_file="${productName}_$2_release$tee.config"
         source="tools/build/config/$config_file"
     fi
 elif [ "$2" = "gcc" ]; then
     if [ "$4" = "debug" ]; then
-        config_file="${product_name}_debug_shell$tee.config"
+        config_file="${productName}_debug_shell$tee.config"
         source="tools/build/config/$config_file"
     else
-        config_file="${product_name}_release$tee.config"
+        config_file="${productName}_release$tee.config"
         source="tools/build/config/$config_file"
     fi
 fi

compat/posix/src/map_error.c

@@ -34,11 +34,6 @@
 #include "los_sem.h"
 #include "los_task.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 int map_errno(UINT32 err)
 {
@@ -115,8 +110,3 @@ int map_errno(UINT32 err)
     return errno;
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

compat/posix/src/misc.c

@@ -37,11 +37,6 @@
 #include "mqueue.h"
 #include "semaphore.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 /*
  * Supply some suitable values for constants that may not be present
@@ -145,8 +140,3 @@ pid_t getpid(void)
     return ((LosTaskCB *)(OsCurrTaskGet()))->taskID;
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

compat/posix/src/mqueue.c

@@ -40,11 +40,6 @@
 #include "fs_file.h"
 #include "user_copy.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 #define FNONBLOCK   O_NONBLOCK
 
@@ -744,11 +739,8 @@ int mq_timedsend(mqd_t personal, const char *msg, size_t msgLen, unsigned int ms
 
     (VOID)pthread_mutex_lock(&g_mqueueMutex);
     privateMqPersonal = MqGetPrivDataBuff(personal);
-    if (privateMqPersonal == NULL) {
-        goto ERROUT_UNLOCK;
-    }
 
-    OS_MQ_GOTO_ERROUT_UNLOCK_IF(privateMqPersonal->mq_status != MQ_USE_MAGIC, EBADF);
+    OS_MQ_GOTO_ERROUT_UNLOCK_IF(privateMqPersonal == NULL || privateMqPersonal->mq_status != MQ_USE_MAGIC, EBADF);
 
     mqueueCB = privateMqPersonal->mq_posixdes;
     OS_MQ_GOTO_ERROUT_UNLOCK_IF(msgLen > (size_t)(mqueueCB->mqcb->queueSize - sizeof(UINT32)), EMSGSIZE);
@@ -791,10 +783,7 @@ ssize_t mq_timedreceive(mqd_t personal, char *msg, size_t msgLen, unsigned int *
 
     (VOID)pthread_mutex_lock(&g_mqueueMutex);
     privateMqPersonal = MqGetPrivDataBuff(personal);
-    if (privateMqPersonal == NULL) {
-        goto ERROUT_UNLOCK;
-    }
-    if (privateMqPersonal->mq_status != MQ_USE_MAGIC) {
+    if (privateMqPersonal == NULL || privateMqPersonal->mq_status != MQ_USE_MAGIC) {
         errno = EBADF;
         goto ERROUT_UNLOCK;
     }
@@ -842,8 +831,3 @@ ssize_t mq_receive(mqd_t personal, char *msg_ptr, size_t msg_len, unsigned int *
     return mq_timedreceive(personal, msg_ptr, msg_len, msg_prio, NULL);
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

compat/posix/src/posix_memalign.c

@@ -32,11 +32,6 @@
 #include "los_typedef.h"
 #include "los_memory.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 int posix_memalign(void **memAddr, size_t alignment, size_t size)
 {
@@ -52,8 +47,3 @@ int posix_memalign(void **memAddr, size_t alignment, size_t size)
     return ENOERR;
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

compat/posix/src/pthread.c

@@ -38,11 +38,6 @@
 #include "los_process_pri.h"
 #include "los_sched_pri.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 /*
  * Array of pthread control structures. A pthread_t object is
@@ -440,7 +435,7 @@ int pthread_detach(pthread_t thread)
         /* Set state to detached and kick any joinees to make them return. */
         SCHEDULER_LOCK(intSave);
         if (!(detached->task->taskStatus & OS_TASK_STATUS_EXIT)) {
-            ret = OsTaskSetDeatchUnsafe(detached->task);
+            ret = OsTaskSetDetachUnsafe(detached->task);
             if (ret == ESRCH) {
                 ret = LOS_OK;
             } else if (ret == LOS_OK) {
@@ -809,8 +804,3 @@ int pthread_getaffinity_np(pthread_t thread, size_t cpusetsize, cpu_set_t* cpuse
     }
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

compat/posix/src/pthread_attr.c

@@ -32,11 +32,6 @@
 #include "pthread.h"
 #include "pprivate.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 int pthread_attr_init(pthread_attr_t *attr)
 {
@@ -280,8 +275,3 @@ int pthread_attr_getaffinity_np(const pthread_attr_t* attr, size_t cpusetsize, c
     return ENOERR;
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

compat/posix/src/pthread_cond.c

@@ -36,11 +36,6 @@
 #include "los_atomic.h"
 #include "los_event_pri.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 #define BROADCAST_EVENT     1
 #define COND_COUNTER_STEP   0x0004U
@@ -351,8 +346,3 @@ int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
     return ret;
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

compat/posix/src/pthread_mutex.c

@@ -31,11 +31,6 @@
 
 #include "pthread.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 int pthread_mutexattr_init(pthread_mutexattr_t *attr)
 {
@@ -139,8 +134,3 @@ int pthread_mutex_unlock(pthread_mutex_t *mutex)
     return LOS_MuxUnlock(mutex);
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

compat/posix/src/sched.c

@@ -35,11 +35,6 @@
 #include "unistd.h"
 #include "los_task_pri.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 int sched_get_priority_min(int policy)
 {
@@ -143,8 +138,3 @@ int __sched_cpucount(size_t set_size, const cpu_set_t* set)
     return count;
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

compat/posix/src/semaphore.c

@@ -34,11 +34,6 @@
 #include "map_error.h"
 #include "time_posix.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 /* Initialize semaphore to value, shared is not supported in Huawei LiteOS. */
 int sem_init(sem_t *sem, int shared, unsigned int value)
@@ -197,8 +192,3 @@ int sem_unlink(const char *name)
     return -1;
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

compat/posix/src/time.c

@@ -50,11 +50,8 @@
 #include "los_swtmr_pri.h"
 #include "los_sys_pri.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
+#define CPUCLOCK_PERTHREAD_MASK 4
+#define CPUCLOCK_ID_OFFSET 3
 
 /*
  * Do a time package defined return. This requires the error code
@@ -280,7 +277,7 @@ STATIC VOID OsGetHwTime(struct timespec64 *hwTime)
 {
     UINT64 nowNsec;
 
-    nowNsec = hi_sched_clock();
+    nowNsec = LOS_CurrNanosec();
     hwTime->tv_sec = nowNsec / OS_SYS_NS_PER_SECOND;
     hwTime->tv_nsec = nowNsec - hwTime->tv_sec * OS_SYS_NS_PER_SECOND;
 }
@@ -431,7 +428,6 @@ int clock_settime(clockid_t clockID, const struct timespec *tp)
         case CLOCK_BOOTTIME:
         case CLOCK_REALTIME_ALARM:
         case CLOCK_BOOTTIME_ALARM:
-        case CLOCK_SGI_CYCLE:
         case CLOCK_TAI:
         case CLOCK_THREAD_CPUTIME_ID:
             TIME_RETURN(ENOTSUP);
@@ -455,13 +451,82 @@ int clock_settime(clockid_t clockID, const struct timespec *tp)
     return settimeofday(&tv, NULL);
 }
 
+static int PthreadGetCputime(clockid_t clockID, struct timespec *ats)
+{
+    uint64_t runtime;
+    UINT32 intSave;
+    UINT32 tid = ((UINT32) ~((clockID) >> CPUCLOCK_ID_OFFSET));
+
+    if (OS_TID_CHECK_INVALID(tid)) {
+        return -ESRCH;
+    }
+    LosTaskCB *task = OsGetTaskCB(tid);
+
+    if (OsCurrTaskGet()->processID != task->processID) {
+        return -EINVAL;
+    }
+
+    SCHEDULER_LOCK(intSave);
+    runtime = task->taskCpup.allTime;
+    SCHEDULER_UNLOCK(intSave);
+
+    ats->tv_sec = runtime / OS_SYS_NS_PER_SECOND;
+    ats->tv_nsec = runtime % OS_SYS_NS_PER_SECOND;
+
+    return 0;
+}
+
+static int ProcessGetCputime(clockid_t clockID, struct timespec *ats)
+{
+    UINT64 runtime;
+    UINT32 intSave;
+    const pid_t pid = ((pid_t) ~((clockID) >> CPUCLOCK_ID_OFFSET));
+    LosProcessCB *spcb = NULL;
+
+    if (OsProcessIDUserCheckInvalid(pid) || pid < 0) {
+        return -EINVAL;
+    }
+
+    spcb = OS_PCB_FROM_PID(pid);
+    if (OsProcessIsUnused(spcb)) {
+        return -EINVAL;
+    }
+
+    SCHEDULER_LOCK(intSave);
+    runtime = spcb->processCpup.allTime;
+    SCHEDULER_UNLOCK(intSave);
+
+    ats->tv_sec = runtime / OS_SYS_NS_PER_SECOND;
+    ats->tv_nsec = runtime % OS_SYS_NS_PER_SECOND;
+
+    return 0;
+}
+
+static int GetCputime(clockid_t clockID, struct timespec *tp)
+{
+    int ret;
+
+    if (clockID >= 0) {
+        return -EINVAL;
+    }
+
+    if ((UINT32)clockID & CPUCLOCK_PERTHREAD_MASK) {
+        ret = PthreadGetCputime(clockID, tp);
+    } else {
+        ret = ProcessGetCputime(clockID, tp);
+    }
+
+    return ret;
+}
+
 int clock_gettime(clockid_t clockID, struct timespec *tp)
 {
     UINT32 intSave;
     struct timespec64 tmp = {0};
     struct timespec64 hwTime = {0};
+    int ret;
 
-    if ((clockID > MAX_CLOCKS) || (clockID < CLOCK_REALTIME)) {
+    if (clockID > MAX_CLOCKS) {
         goto ERROUT;
     }
 
@@ -498,11 +563,17 @@ int clock_gettime(clockid_t clockID, struct timespec *tp)
         case CLOCK_BOOTTIME:
         case CLOCK_REALTIME_ALARM:
         case CLOCK_BOOTTIME_ALARM:
-        case CLOCK_SGI_CYCLE:
         case CLOCK_TAI:
             TIME_RETURN(ENOTSUP);
         default:
-            goto ERROUT;
+            {
+#ifdef LOSCFG_KERNEL_CPUP
+                ret = GetCputime(clockID, tp);
+                TIME_RETURN(-ret);
+#else
+                TIME_RETURN(EINVAL);
+#endif
+            }
     }
 
     return 0;
@@ -511,8 +582,45 @@ ERROUT:
     TIME_RETURN(EINVAL);
 }
 
+static int CheckClock(const clockid_t clockID)
+{
+    int error = 0;
+    const pid_t pid = ((pid_t) ~((clockID) >> CPUCLOCK_ID_OFFSET));
+
+    if (!((UINT32)clockID & CPUCLOCK_PERTHREAD_MASK)) {
+        LosProcessCB *spcb = NULL;
+        if (OsProcessIDUserCheckInvalid(pid) || pid < 0) {
+            return -EINVAL;
+        }
+        spcb = OS_PCB_FROM_PID(pid);
+        if (OsProcessIsUnused(spcb)) {
+            error = -EINVAL;
+        }
+    } else {
+        error = -EINVAL;
+    }
+
+    return error;
+}
+
+static int CpuClockGetres(const clockid_t clockID, struct timespec *tp)
+{
+    if (clockID > 0) {
+        return -EINVAL;
+    }
+
+    int error = CheckClock(clockID);
+    if (!error) {
+        error = ProcessGetCputime(clockID, tp);
+    }
+
+    return error;
+}
+
 int clock_getres(clockid_t clockID, struct timespec *tp)
 {
+    int ret;
+
     if (tp == NULL) {
         TIME_RETURN(EINVAL);
     }
@@ -537,11 +645,17 @@ int clock_getres(clockid_t clockID, struct timespec *tp)
         case CLOCK_BOOTTIME:
         case CLOCK_REALTIME_ALARM:
         case CLOCK_BOOTTIME_ALARM:
-        case CLOCK_SGI_CYCLE:
         case CLOCK_TAI:
             TIME_RETURN(ENOTSUP);
         default:
+#ifdef LOSCFG_KERNEL_CPUP
+            {
+                ret = CpuClockGetres(clockID, tp);
+                TIME_RETURN(-ret);
+            }
+#else
             TIME_RETURN(EINVAL);
+#endif
     }
 
     TIME_RETURN(0);
@@ -564,7 +678,6 @@ int clock_nanosleep(clockid_t clk, int flags, const struct timespec *req, struct
         case CLOCK_BOOTTIME:
         case CLOCK_REALTIME_ALARM:
         case CLOCK_BOOTTIME_ALARM:
-        case CLOCK_SGI_CYCLE:
         case CLOCK_TAI:
             if (flags == 0 || flags == TIMER_ABSTIME) {
                 TIME_RETURN(ENOTSUP);
@@ -869,8 +982,8 @@ clock_t clock(VOID)
     clock_t clockMsec;
     UINT64 nowNsec;
 
-    nowNsec = hi_sched_clock();
-    clockMsec = (clock_t)(nowNsec / OS_SYS_NS_PER_MS);
+    nowNsec = LOS_CurrNanosec();
+    clockMsec = (clock_t)(nowNsec / (OS_SYS_NS_PER_SECOND / CLOCKS_PER_SEC));
 
     return clockMsec;
 }
@@ -901,6 +1014,7 @@ int setitimer(int which, const struct itimerval *value, struct itimerval *ovalue
         return -1;
     }
 
+    /* To avoid creating an invalid timer after the timer has already been create */
     if (processCB->timerID == (timer_t)(UINTPTR)MAX_INVALID_TIMER_VID) {
         ret = timer_create(CLOCK_REALTIME, NULL, &timerID);
         if (ret != LOS_OK) {
@@ -966,7 +1080,7 @@ int getitimer(int which, struct itimerval *value)
 }
 
 #ifdef LOSCFG_KERNEL_VDSO
-VOID OsGetVdsoTime(VdsoDataPage *vdsoDataPage)
+VOID OsVdsoTimeGet(VdsoDataPage *vdsoDataPage)
 {
     UINT32 intSave;
     struct timespec64 tmp = {0};
@@ -990,8 +1104,3 @@ VOID OsGetVdsoTime(VdsoDataPage *vdsoDataPage)
 }
 #endif
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

drivers/char/mem/src/mem.c

@@ -32,12 +32,6 @@
 #include "fcntl.h"
 #include "linux/kernel.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
-
 static int MemOpen(struct file *filep)
 {
     return 0;
@@ -60,6 +54,7 @@ static ssize_t MemWrite(FAR struct file *filep, FAR const char *buffer, size_t b
 
 static ssize_t MemMap(FAR struct file *filep, FAR LosVmMapRegion *region)
 {
+#ifdef LOSCFG_KERNEL_VM
     size_t size = region->range.size;
     PADDR_T paddr = region->pgOff << PAGE_SHIFT;
     VADDR_T vaddr = region->range.base;
@@ -78,7 +73,10 @@ static ssize_t MemMap(FAR struct file *filep, FAR LosVmMapRegion *region)
     if (LOS_ArchMmuMap(&space->archMmu, vaddr, paddr, size >> PAGE_SHIFT, region->regionFlags) <= 0) {
         return -EAGAIN;
     }
-
+#else
+    UNUSED(filep);
+    UNUSED(region);
+#endif
     return 0;
 }
 
@@ -100,9 +98,3 @@ int DevMemRegister(void)
 {
     return register_driver("/dev/mem", &g_memDevOps, 0666, 0); /* 0666: file mode */
 }
-
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

drivers/char/quickstart/Kconfig

@@ -0,0 +1,6 @@
+config DRIVERS_QUICKSTART
+    bool "Enable QUICKSTART"
+    default y
+    depends on DRIVERS && FS_VFS
+    help
+      Answer Y to enable LiteOS support quickstart frame dev.

drivers/char/quickstart/include/los_dev_quickstart.h

@@ -1,68 +1,87 @@
-/*
- * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
- * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this list of
- *    conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice, this list
- *    of conditions and the following disclaimer in the documentation and/or other materials
- *    provided with the distribution.
- *
- * 3. Neither the name of the copyright holder nor the names of its contributors may be used
- *    to endorse or promote products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef _AMBA_PL011_UART_H
-#define _AMBA_PL011_UART_H
-
-#include "los_typedef.h"
-
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
-
-#define UART_DR                 0x0   /* data register */
-#define UART_RSR                0x04
-#define UART_FR                 0x18  /* flag register */
-#define UART_CLR                0x44  /* interrupt clear register */
-#define UART_CR                 0x30  /* control register */
-#define UART_IBRD               0x24  /* interge baudrate register */
-#define UART_FBRD               0x28  /* decimal baudrate register */
-#define UART_LCR_H              0x2C
-#define UART_IFLS               0x34  /* fifo register */
-#define UART_IMSC               0x38  /* interrupt mask register */
-#define UART_RIS                0x3C  /* base interrupt state register */
-#define UART_MIS                0x40  /* mask interrupt state register */
-#define UART_ICR                0x44
-#define UART_DMACR              0x48  /* DMA control register */
-
-#define CMD_LENGTH  128
-
-extern CHAR g_inputCmd[CMD_LENGTH];
-extern INT32 g_inputIdx;
-
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */
-#endif
+/*
+ * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+ * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ *    conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *    of conditions and the following disclaimer in the documentation and/or other materials
+ *    provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ *    to endorse or promote products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __LOS_DEV_QUICKSTART_H__
+#define __LOS_DEV_QUICKSTART_H__
+
+#include "los_typedef.h"
+#include "sys/ioctl.h"
+
+#ifdef __cplusplus
+#if __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+typedef enum {
+    QS_STAGE1 = 1,   /* 1: start from stage1, 0 is already called in kernel process */
+    QS_STAGE2,       /* system init stage No 2 */
+    QS_STAGE3,       /* system init stage No 3 */
+    QS_STAGE_LIMIT
+} QuickstartStage;
+
+typedef enum {
+    QS_NOTIFY = QS_STAGE_LIMIT,    /* quickstart notify */
+    QS_LISTEN,                     /* quickstart listen */
+    QS_CTL_LIMIT
+} QuickstartConctrl;
+
+typedef struct {
+    unsigned int events;
+    unsigned int wait;
+} QuickstartListenArgs;
+
+#define QUICKSTART_IOC_MAGIC    'T'
+#define QUICKSTART_NOTIFY       _IO(QUICKSTART_IOC_MAGIC, QS_NOTIFY)
+#define QUICKSTART_LISTEN       _IOR(QUICKSTART_IOC_MAGIC, QS_LISTEN, QuickstartListenArgs)
+#define QUICKSTART_STAGE(x)     _IO(QUICKSTART_IOC_MAGIC, (x))
+
+#define QUICKSTART_NODE         "/dev/quickstart"
+
+#define QS_STAGE_CNT            (QS_STAGE_LIMIT - QS_STAGE1)
+
+typedef void (*SysteminitHook)(void);
+
+typedef struct {
+    SysteminitHook func[QS_STAGE_CNT];
+} LosSysteminitHook;
+
+extern void QuickstartHookRegister(LosSysteminitHook hooks);
+
+extern int QuickstartDevRegister(void);
+
+#ifdef __cplusplus
+#if __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+#endif

drivers/char/quickstart/src/qucikstart.c

@@ -1,117 +0,0 @@
-/*
- * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
- * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this list of
- *    conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice, this list
- *    of conditions and the following disclaimer in the documentation and/or other materials
- *    provided with the distribution.
- *
- * 3. Neither the name of the copyright holder nor the names of its contributors may be used
- *    to endorse or promote products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "los_quick_start_pri.h"
-#include "bits/ioctl.h"
-#include "fcntl.h"
-#include "linux/kernel.h"
-
-#define QUICKSTART_IOC_MAGIC    'T'
-#define QUICKSTART_INITSTEP2    _IO(QUICKSTART_IOC_MAGIC, 0)
-#define QUICKSTART_UNREGISTER   _IO(QUICKSTART_IOC_MAGIC, 1)
-#define QUICKSTART_NODE         "/dev/quickstart"
-
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
-
-static int QuickstartOpen(struct file *filep)
-{
-    return 0;
-}
-
-static int QuickstartClose(struct file *filep)
-{
-    return 0;
-}
-
-static void SystemInitStep2(void)
-{
-    static int once = 0;
-    /* Only one call is allowed */
-    if (once != 0) {
-        return;
-    }
-    once = 1;
-
-    unsigned int ret = OsSystemInitStep2();
-    if (ret != LOS_OK) {
-        PRINT_ERR("systemInitStep2 failed\n");
-    }
-}
-
-static int QuickstartDevUnregister(void)
-{
-    return unregister_driver(QUICKSTART_NODE);
-}
-
-static ssize_t QuickstartIoctl(struct file *filep, int cmd, unsigned long arg)
-{
-    switch (cmd) {
-        case QUICKSTART_INITSTEP2:
-            SystemInitStep2();
-            break;
-        case QUICKSTART_UNREGISTER:
-            QuickstartDevUnregister();
-            break;
-
-        default:
-            break;
-    }
-    return 0;
-}
-
-static const struct file_operations_vfs g_quickstartDevOps = {
-    QuickstartOpen,  /* open */
-    QuickstartClose, /* close */
-    NULL,  /* read */
-    NULL, /* write */
-    NULL,      /* seek */
-    QuickstartIoctl,      /* ioctl */
-    NULL,   /* mmap */
-#ifndef CONFIG_DISABLE_POLL
-    NULL,      /* poll */
-#endif
-    NULL,      /* unlink */
-};
-
-int DevQuickStartRegister(void)
-{
-    return register_driver(QUICKSTART_NODE, &g_quickstartDevOps, 0666, 0); /* 0666: file mode */
-}
-
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */

drivers/char/quickstart/src/quickstart.c

@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+ * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ *    conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *    of conditions and the following disclaimer in the documentation and/or other materials
+ *    provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ *    to endorse or promote products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "los_dev_quickstart.h"
+#include "fcntl.h"
+#include "linux/kernel.h"
+#include "los_process_pri.h"
+#include "fs/fs.h"
+
+EVENT_CB_S g_qsEvent;
+static SysteminitHook g_systemInitFunc[QS_STAGE_CNT] = {0};
+static char g_callOnce[QS_STAGE_CNT] = {0};
+
+static int QuickstartOpen(struct file *filep)
+{
+    return 0;
+}
+
+static int QuickstartClose(struct file *filep)
+{
+    return 0;
+}
+
+static int QuickstartNotify(unsigned int events)
+{
+    int ret = LOS_EventWrite((PEVENT_CB_S)&g_qsEvent, events);
+    if (ret != 0) {
+        PRINT_ERR("%s,%d:0x%x\n", __FUNCTION__, __LINE__, ret);
+        ret = -EINVAL;
+    }
+    return ret;
+}
+
+#define WAITLIMIT    300000 /* 5min = 5*60*1000*1tick(1ms) */
+
+static int QuickstartListen(unsigned long arg)
+{
+    QuickstartListenArgs args;
+    if (copy_from_user(&args, (QuickstartListenArgs __user *)arg, sizeof(QuickstartListenArgs)) != LOS_OK) {
+        PRINT_ERR("%s,%d,failed!\n", __FUNCTION__, __LINE__);
+        return -EINVAL;
+    }
+    if (args.wait > WAITLIMIT) {
+        args.wait = WAITLIMIT;
+        PRINT_ERR("%s wait arg is too longer, set to WAITLIMIT!\n", __FUNCTION__);
+    }
+    int ret = LOS_EventRead((PEVENT_CB_S)&g_qsEvent, args.events, LOS_WAITMODE_AND | LOS_WAITMODE_CLR, args.wait);
+    if (ret != args.events && ret != 0) {  /* 0: nowait is normal case */
+        PRINT_ERR("%s,%d:0x%x\n", __FUNCTION__, __LINE__, ret);
+        ret = -EINVAL;
+    }
+    return ret;
+}
+
+void QuickstartHookRegister(LosSysteminitHook hooks)
+{
+    for (int i = 0; i < QS_STAGE_CNT; i++) {
+        g_systemInitFunc[i] = hooks.func[i];
+    }
+}
+
+static int QuickstartStageWorking(unsigned int level)
+{
+    if ((level < QS_STAGE_CNT) && (g_callOnce[level] == 0) && (g_systemInitFunc[level] != NULL)) {
+        g_callOnce[level] = 1;    /* 1: Already called */
+        g_systemInitFunc[level]();
+    } else {
+        PRINT_WARN("Trigger quickstart,but doing nothing!!\n");
+    }
+    return 0;
+}
+
+static int QuickstartDevUnlink(struct Vnode *node)
+{
+    (void)node;
+    return unregister_driver(QUICKSTART_NODE);
+}
+
+static ssize_t QuickstartIoctl(struct file *filep, int cmd, unsigned long arg)
+{
+    ssize_t ret;
+    if (cmd == QUICKSTART_NOTIFY) {
+        return QuickstartNotify(arg);
+    }
+
+    if (OsGetUserInitProcessID() != LOS_GetCurrProcessID()) {
+        PRINT_ERR("Permission denios!\n");
+        return -EACCES;
+    }
+    switch (cmd) {
+        case QUICKSTART_LISTEN:
+            ret = QuickstartListen(arg);
+            break;
+        default:
+            ret = QuickstartStageWorking(cmd - QUICKSTART_STAGE(QS_STAGE1));  /* ioctl cmd converted to stage level */
+            break;
+    }
+    return ret;
+}
+
+static const struct file_operations_vfs g_quickstartDevOps = {
+    .open = QuickstartOpen, /* open */
+    .close = QuickstartClose, /* close */
+    .ioctl = QuickstartIoctl, /* ioctl */
+    .unlink = QuickstartDevUnlink, /* unlink */
+};
+
+int QuickstartDevRegister(void)
+{
+    LOS_EventInit(&g_qsEvent);
+    return register_driver(QUICKSTART_NODE, &g_quickstartDevOps, 0644, 0); /* 0644: file mode */
+}
+

drivers/char/random/src/random.c

@@ -33,11 +33,6 @@
 #include "fcntl.h"
 #include "linux/kernel.h"
 
-#ifdef __cplusplus
-#if __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-#endif /* __cplusplus */
 
 static unsigned long g_randomMax =  0x7FFFFFFF;
 
@@ -58,7 +53,7 @@ static unsigned long g_seed = 1;
 
 int RanOpen(struct file *filep)
 {
-    g_seed = (unsigned long)(hi_sched_clock() & 0xffffffff);
+    g_seed = (unsigned long)(LOS_CurrNanosec() & 0xffffffff);
     return 0;
 }
 
@@ -96,7 +91,7 @@ ssize_t RanRead(struct file *filep, char *buffer, size_t buflen)
     return (buflen - len); /* return a successful len */
 }
 
-static ssize_t RanMap(FAR struct file* filep, FAR LosVmMapRegion *region)
+static ssize_t RanMap(FAR struct file *filep, FAR LosVmMapRegion *region)
 {
     PRINTK("%s %d, mmap is not support\n", __FUNCTION__, __LINE__);
     return 0;
@@ -121,8 +116,3 @@ int DevRandomRegister(void)
     return register_driver("/dev/random", &g_ranDevOps, 0666, 0); /* 0666: file mode */
 }
 
-#ifdef __cplusplus
-#if __cplusplus
-}
-#endif /* __cplusplus */
-#endif /* __cplusplus */