[atomic]添加arm与risc-v下的常用原子操作函数 (#7053)

* Update Kconfig
* Update trap_gcc.S
* Update bsp/hifive1/drivers/SConscript

Co-authored-by: Man, Jianting (Meco) <920369182@qq.com>
* Update SConscript
* [atomic]提交一份arm与risc-v架构下的常用原子操作函数
* 修改变量类型
* 更新rtatomic.h与atomic_port.c
* 更新rt-thread\libcpu\arm\common\atomic_port.c
* 更新include/rtatomic.h与libcpu/arm/common/SConscript
* 更新include/rtatomic.h
* 修正格式与Kconfig
* 修正格式与文件结构

* 规范文件格式与文件重命名
* 添加测试用例与CI
* 添加函数声明
* 修改virt64/SConscript 添加atomic_riscv.c
  * 1.规范代码风格
  * 2.添加RISC-V64原子指令支持 解决在RV64下编译器将32-bit运算结果扩展为64-bit 导致判断错误
* 添加C11标准库原子操作测试

---------

Co-authored-by: Man, Jianting (Meco) <920369182@qq.com>

examples/utest/configs/kernel/atomic.conf

@@ -0,0 +1,4 @@
+CONFIG_UTEST_ATOMIC_TC=y
+# dependencies
+CONFIG_RT_USING_TIMER_SOFT=y
+CONFIG_RT_USING_THREAD=y

examples/utest/configs/kernel/atomic_c11.conf

@@ -0,0 +1,5 @@
+CONFIG_UTEST_ATOMIC_TC=y
+# dependencies
+CONFIG_RT_USING_TIMER_SOFT=y
+CONFIG_RT_USING_THREAD=y
+CONFIG_RT_USING_STDC_ATOMIC=y

examples/utest/testcases/kernel/Kconfig

@@ -55,4 +55,8 @@ config UTEST_THREAD_TC
     select RT_USING_TIMER_SOFT
     select RT_USING_THREAD
 
+config UTEST_ATOMIC_TC
+    bool "atomic test"
+    default n
+    
 endmenu

examples/utest/testcases/kernel/SConscript

@@ -41,6 +41,9 @@ if GetDepend(['UTEST_MAILBOX_TC']):
 if GetDepend(['UTEST_THREAD_TC']):
     src += ['thread_tc.c']
 
+if GetDepend(['UTEST_ATOMIC_TC']):
+    src += ['atomic_tc.c']
+
 group = DefineGroup('utestcases', src, depend = ['RT_USING_UTESTCASES'], CPPPATH = CPPPATH)
 
 Return('group')

examples/utest/testcases/kernel/atomic_tc.c

@@ -0,0 +1,147 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2022-07-27     flybreak     the first version
+ * 2023-03-21     WangShun     add atomic test
+ */
+
+#include <rtthread.h>
+#include "utest.h"
+#include "rtatomic.h"
+#include <rthw.h>
+
+#define THREAD_PRIORITY         25
+#define THREAD_TIMESLICE        1
+#define THREAD_STACKSIZE        1024
+
+/* convenience macro - return either 64-bit or 32-bit value */
+#define ATOMIC_WORD(val_if_64, val_if_32)                                           \
+    ((rt_atomic_t)((sizeof(void *) == sizeof(uint64_t)) ? (val_if_64) : (val_if_32)))
+
+static rt_atomic_t count = 0;
+static rt_sem_t sem_t;
+
+static void test_atomic_api(void)
+{
+    rt_atomic_t base;
+    rt_atomic_t oldval;
+
+    /* rt_atomic_t */
+    uassert_true(sizeof(rt_atomic_t) == ATOMIC_WORD(sizeof(uint64_t), sizeof(uint32_t)));
+
+    /* rt_atomic_add */
+    base = 0;
+    rt_atomic_add(&base, 10);
+    uassert_true(base == 10);
+    /* rt_atomic_add negative */
+    base = 2;
+    rt_atomic_add(&base, -4);
+    uassert_true(base == -2);
+
+    /* rt_atomic_sub */
+    base = 11;
+    rt_atomic_sub(&base, 10);
+    uassert_true(base == 1);
+    /* rt_atomic_sub negative */
+    base = 2;
+    rt_atomic_sub(&base, -5);
+    uassert_true(base == 7);
+
+    /* rt_atomic_or */
+    base = 0xFF00;
+    rt_atomic_or(&base, 0x0F0F);
+    uassert_true(base == 0xFF0F);
+
+    /* rt_atomic_xor */
+    base = 0xFF00;
+    rt_atomic_xor(&base, 0x0F0F);
+    uassert_true(base == 0xF00F);
+
+    /* rt_atomic_and */
+    base = 0xFF00;
+    rt_atomic_and(&base, 0x0F0F);
+    uassert_true(base == 0x0F00);
+
+    /* rt_atomic_exchange */
+    base = 0xFF00;
+    rt_atomic_exchange(&base, 0x0F0F);
+    uassert_true(base == 0x0F0F);
+
+    /* rt_atomic_flag_test_and_set */
+    base = 0x0;
+    rt_atomic_flag_test_and_set(&base);
+    uassert_true(base == 0x1);
+
+    /* rt_atomic_flag_clear */
+    base = 0x1;
+    rt_atomic_flag_clear(&base);
+    uassert_true(base == 0x0);
+
+    /* rt_atomic_load */
+    base = 0xFF00;
+    rt_atomic_load(&base);
+    uassert_true(base == 0xFF00);
+
+    /* rt_atomic_store */
+    base = 0xFF00;
+    rt_atomic_store(&base, 0x0F0F);
+    uassert_true(base == 0x0F0F);
+
+    /* rt_atomic_compare_exchange_strong */
+    base = 10;
+    oldval = 10;
+    uassert_true(rt_atomic_compare_exchange_strong(&base, &oldval, 11) == 1);
+    uassert_true(base == 11);
+}
+
+static void ture_entry(void *parameter)
+{
+    int i;
+    for(i = 0; i < 1000000; i++)
+    {
+        rt_atomic_add(&count, 1);
+    }
+    rt_sem_release(sem_t);
+}
+
+static void test_atomic_add(void)
+{
+    rt_thread_t thread;
+    int i;
+    sem_t = rt_sem_create("atomic_sem", 0, RT_IPC_FLAG_PRIO);
+
+    count = 0;
+    thread = rt_thread_create("t1", ture_entry, RT_NULL, THREAD_STACKSIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
+    rt_thread_startup(thread);
+    thread = rt_thread_create("t2", ture_entry, RT_NULL, THREAD_STACKSIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
+    rt_thread_startup(thread);
+    thread = rt_thread_create("t3", ture_entry, RT_NULL, THREAD_STACKSIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
+    rt_thread_startup(thread);
+
+    for(i = 0; i < 3; i++)
+    {
+        rt_sem_take(sem_t, RT_WAITING_FOREVER);
+    }
+    uassert_true(count == 3000000);
+}
+
+static rt_err_t utest_tc_init(void)
+{
+    return RT_EOK;
+}
+
+static rt_err_t utest_tc_cleanup(void)
+{
+    return RT_EOK;
+}
+
+static void testcase(void)
+{
+    UTEST_UNIT_RUN(test_atomic_api);
+    UTEST_UNIT_RUN(test_atomic_add);
+}
+UTEST_TC_EXPORT(testcase, "testcases.kernel.atomic_tc", utest_tc_init, utest_tc_cleanup, 10);