[libc] remove RT_USING_LIBC

2026-06-12 20:24:15 +08:00 · 2021-12-26 09:41:24 -05:00
parent 5925abce3e
commit ed09f38012
59 changed files with 178 additions and 190 deletions
@@ -31,7 +31,6 @@ menu "On-chip Peripheral Drivers"
    menuconfig BSP_USING_RTC
        bool "Enable RTC"
        select RT_USING_RTC
-        select RT_USING_LIBC
        default n
        if BSP_USING_RTC
            choice
@@ -37,7 +37,6 @@ menu "On-chip Peripheral Drivers"
    menuconfig BSP_USING_RTC
        bool "Enable RTC"
        select RT_USING_RTC
-        select RT_USING_LIBC
        default n
        if BSP_USING_RTC
            choice
@@ -204,7 +204,6 @@ menu "On-chip Peripheral Drivers"
    menuconfig BSP_USING_ONCHIP_RTC
        bool "Enable RTC"
        select RT_USING_RTC
-        select RT_USING_LIBC
        default n
        if BSP_USING_ONCHIP_RTC
            config RTC_USING_INTERNAL_CLK
@@ -918,7 +918,6 @@ GD32 BSP 的制作规范主要分为 3 个方面：工程配置，ENV 配置和
 - 系统空闲线程栈大小统一设置为 256（宏：IDLE_THREAD_STACK_SIZE）
 - 开启组件自动初始化（宏：RT_USING_COMPONENTS_INIT）
 - 需要开启 user main 选项（宏：RT_USING_USER_MAIN）
- 默认关闭 libc（宏：RT_USING_LIBC）
 - FinSH 默认只使用 MSH 模式（宏：FINSH_USING_MSH_ONLY）

 #### 4.1.3 IDE 配置
@@ -219,7 +219,6 @@ menu "On-chip Peripheral Drivers"
    menuconfig BSP_USING_RTC
        bool "Enable RTC"
        select RT_USING_RTC
-        select RT_USING_LIBC
        default n

        if BSP_USING_RTC
@@ -31,7 +31,6 @@ menu "On-chip Peripheral Drivers"
    menuconfig BSP_USING_RTC
        bool "Enable RTC"
        select RT_USING_RTC
-        select RT_USING_LIBC
        default n
        if BSP_USING_RTC
            choice
@@ -137,7 +137,6 @@ menu "On-chip Peripheral Drivers"
        select RT_USING_SDIO
        select RT_USING_DFS
        select RT_USING_DFS_ELMFAT
-        select RT_LIBC_USING_TIME
        default y

    config BSP_USING_RTC
@@ -84,7 +84,6 @@ menu "On-chip Peripheral Drivers"
     config BSP_USING_ONCHIP_RTC
         bool "Enable RTC"
         select RT_USING_RTC
-         select RT_USING_LIBC
         default n
        
 endmenu
@@ -390,7 +390,6 @@ menu "On-chip Peripheral Drivers"
    menuconfig BSP_USING_ONCHIP_RTC
    bool "Enable RTC"
    select RT_USING_RTC
-    select RT_USING_LIBC
    default n
    if BSP_USING_ONCHIP_RTC
        config NRFX_CLOCK_ENABLED
@@ -374,7 +374,6 @@ menu "On-chip Peripheral Drivers"
    menuconfig BSP_USING_ONCHIP_RTC
    bool "Enable RTC"
    select RT_USING_RTC
-    select RT_USING_LIBC
    default n


@@ -221,7 +221,6 @@ The specifications of making STM32 BSP are mainly divided into three aspects: en
 - The system idle thread stack size is uniformly set to 256 (Macro: IDLE_THREAD_STACK_SIZE) 
 - Turn on automatic component initialization (Macro: RT_USING_COMPONENTS_INIT) 
 - Need to enable the user main option (Macro: RT_USING_USER_MAIN) 
- Disable libc by default (Macro: RT_USING_LIBC) 
 - FinSH only uses MSH mode by default (Macro: FINSH_USING_MSH_ONLY) 

 #### 4.1.3 IDE configuration
@@ -269,7 +269,6 @@ STM32 BSP 的制作规范主要分为 3 个方面：工程配置，ENV 配置和
 - 系统空闲线程栈大小统一设置为 256（宏：IDLE_THREAD_STACK_SIZE）
 - 开启组件自动初始化（宏：RT_USING_COMPONENTS_INIT）
 - 需要开启 user main 选项（宏：RT_USING_USER_MAIN）
- 默认关闭 libc（宏：RT_USING_LIBC）
 - FinSH 默认只使用 MSH 模式（宏：FINSH_USING_MSH_ONLY）

 #### 4.1.3 IDE 配置
@@ -187,7 +187,6 @@ menu "On-chip Peripheral Drivers"
    menuconfig BSP_USING_ONCHIP_RTC
        bool "Enable RTC"
        select RT_USING_RTC
-        select RT_USING_LIBC
        default n
        if BSP_USING_ONCHIP_RTC
            choice
@@ -143,7 +143,6 @@ menu "On-chip Peripheral Drivers"
    menuconfig BSP_USING_ONCHIP_RTC
        bool "Enable RTC"
        select RT_USING_RTC
-        select RT_USING_LIBC
        default n
        if BSP_USING_ONCHIP_RTC
            choice
@@ -151,7 +151,6 @@ menu "On-chip Peripheral Drivers"
    menuconfig BSP_USING_ONCHIP_RTC
        bool "Enable RTC"
        select RT_USING_RTC
-        select RT_USING_LIBC
        default n
        if BSP_USING_ONCHIP_RTC
            choice
@@ -162,7 +162,6 @@ menu "On-chip Peripheral Drivers"
    menuconfig BSP_USING_ONCHIP_RTC
        bool "Enable RTC"
        select RT_USING_RTC
-        select RT_USING_LIBC
        default n
        if BSP_USING_ONCHIP_RTC
            choice
@@ -193,7 +193,6 @@ menu "On-chip Peripheral Drivers"
    menuconfig BSP_USING_ONCHIP_RTC
        bool "Enable RTC"
        select RT_USING_RTC
-        select RT_USING_LIBC
        default n
        if BSP_USING_ONCHIP_RTC
            choice
@@ -148,7 +148,6 @@ menu "Onboard Peripheral Drivers"
            select RT_USING_WIFI
            select RT_WLAN_PROT_LWIP_PBUF_FORCE
            select RT_USING_LWIP
-            select RT_USING_LIBC
            select RT_USING_DFS
            select DFS_USING_POSIX
            select PKG_USING_FAL
@@ -236,7 +236,6 @@ menu "On-chip Peripheral Drivers"
    config BSP_USING_RTC
        bool "Enable RTC"
        select RT_USING_RTC
-        select RT_USING_LIBC
        default n

    menuconfig BSP_USING_SPI
@@ -236,7 +236,6 @@ menu "On-chip Peripheral Drivers"
    config BSP_USING_RTC
        bool "Enable RTC"
        select RT_USING_RTC
-        select RT_USING_LIBC
        default n

    menuconfig BSP_USING_SPI
@@ -167,7 +167,6 @@ menu "On-chip Peripheral Drivers"
    menuconfig BSP_USING_RTC
        bool "Enable RTC"
        select RT_USING_RTC
-        select RT_USING_LIBC
        default n

        if BSP_USING_RTC
@@ -283,7 +283,6 @@ menu "On-chip Peripheral Drivers"
    menuconfig BSP_USING_ONCHIP_RTC
        bool "Enable RTC"
        select RT_USING_RTC
-        select RT_USING_LIBC
        default n
        if BSP_USING_ONCHIP_RTC
            choice
@@ -9,8 +9,8 @@ if RT_USING_CPLUSPLUS
    config RT_USING_CPLUSPLUS11
        bool "Enable c++11 threading feature support"
        default n
-        select RT_USING_LIBC
-        select RT_LIBC_USING_FILEIO
+        select RT_USING_POSIX_FS
+        select RT_USING_POSIX_DEVIO
        select RT_USING_PTHREADS
        select RT_USING_RTC

@@ -11,8 +11,6 @@ Because RT-Thread RTOS is used in embedded system mostly, there are some rules f
 4. Static class variables are discouraged. The time and place to call their constructor function could not be precisely controlled and make multi-threaded programming a nightmare.
 5. Multiple inheritance is strongly discouraged, as it can cause intolerable confusion.

-*NOTE*: The libc (RT_USING_LIBC in rtconfig.h) must be enable.
-
 About GNU GCC compiler

 please add following string in your ld link script:
@@ -95,8 +95,8 @@ extern "C" unsigned __ARM_TPL_thread_hw_concurrency()
 extern "C" int __ARM_TPL_tls_create(__ARM_TPL_tls_key *__key,
                                    void (*__at_exit)(void *))
 {
-    pthread_key_t key; 
-    
+    pthread_key_t key;
+
    if (pthread_key_create(&key, __at_exit) == 0)
    {
        *__key = key;
@@ -4,7 +4,7 @@
 #error "C++ version lower than C++11"
 #endif

-//#if defined(RT_USING_LIBC) && defined(RT_USING_PTHREADS)
+//#if defined(RT_USING_PTHREADS)

 #include <pthread.h>

@@ -509,4 +509,4 @@ namespace std
    }
 }

-//#endif // (RT_USING_LIBC) && (RT_USING_PTHREADS)
+//#endif //(RT_USING_PTHREADS)
@@ -34,7 +34,7 @@ namespace std
        get_once_functor_lock_ptr() = m_ptr;
    }

-    extern "C"  
+    extern "C"
    {
        void once_proxy()
        {
@@ -42,7 +42,7 @@ namespace std
            function<void()> once_call = std::move(once_functor);

            // no need to hold the lock anymore
-            unique_lock<mutex>* lock_ptr = get_once_functor_lock_ptr();            
+            unique_lock<mutex>* lock_ptr = get_once_functor_lock_ptr();
            get_once_functor_lock_ptr() = nullptr;
            lock_ptr->unlock();

@@ -4,7 +4,7 @@
 #error "C++ version lower than C++11"
 #endif

-//#if defined(RT_USING_LIBC) && defined(RT_USING_PTHREADS)
+//#if defined(RT_USING_PTHREADS)

 #include <unistd.h>
 #include <pthread.h>
@@ -35,17 +35,17 @@ namespace std
    {
        auto raw_ptr = b.get();
        // transfer the ownership of the invoker to the new thread
-        raw_ptr->this_ptr = std::move(b); 
+        raw_ptr->this_ptr = std::move(b);
        int err = pthread_create(&_m_thr.__cpp_thread_t, NULL,
                &execute_native_thread_routine, raw_ptr);

-        if (err) 
+        if (err)
        {
            raw_ptr->this_ptr.reset();
            throw_system_error(err, "Failed to create a thread");
        }
-        
-    }    
+
+    }

    thread::~thread()
    {
@@ -59,12 +59,12 @@ namespace std

        if (joinable())
            err = pthread_join(native_handle(), NULL);
-        
-        if (err) 
+
+        if (err)
        {
            throw_system_error(err, "thread::join failed");
        }
-    
+
        _m_thr = id();
    }

@@ -78,14 +78,14 @@ namespace std
        {
            throw_system_error(err, "thread::detach failed");
        }
-    
+
        _m_thr = id();
    }

    // TODO: not yet actually implemented.
    // The standard states that the returned value should only be considered a hint.
-    unsigned thread::hardware_concurrency() noexcept 
-    {   
+    unsigned thread::hardware_concurrency() noexcept
+    {
        int __n = _RT_NPROCS;
        if (__n < 0)
            __n = 0;
@@ -945,7 +945,6 @@ DWORD get_fattime(void)
 {
    DWORD fat_time = 0;

-#if defined(RT_LIBC_USING_TIME) || defined(RT_USING_LIBC)
    time_t now;
    struct tm *p_tm;
    struct tm tm_now;
@@ -968,7 +967,6 @@ DWORD get_fattime(void)
               (DWORD)tm_now.tm_hour        << 11 |
               (DWORD)tm_now.tm_min         <<  5 |
               (DWORD)tm_now.tm_sec / 2 ;
-#endif /* defined(RT_LIBC_USING_TIME) || defined(RT_USING_LIBC) */

    return fat_time;
 }
@@ -1,38 +1,16 @@
 menu "POSIX layer and C standard library"

-config RT_USING_LIBC
-    bool "Enable libc APIs from the toolchain"
+config RT_USING_MODULE
+    bool "Enable dynamic module with dlopen/dlsym/dlclose feature"
    default n

-if RT_USING_LIBC
-    config RT_LIBC_USING_TIME
-        default y
-
-    config RT_LIBC_USING_FILEIO
-        bool "Enable libc with file operation, eg.fopen/fwrite/fread/getchar/STDIO"
-        select RT_USING_POSIX_FS
-        select RT_USING_POSIX_DEVIO
+if RT_USING_MODULE
+    config RT_USING_CUSTOM_DLMODULE
+        bool "Enable load dynamic module by custom"
        default n
-
-    config RT_USING_MODULE
-        bool "Enable dynamic module with dlopen/dlsym/dlclose feature"
-        default n
-
-    if RT_USING_MODULE
-        config RT_USING_CUSTOM_DLMODULE
-            bool "Enable load dynamic module by custom"
-            default n
-    endif
-endif
-
-if RT_USING_LIBC != y
-    config RT_LIBC_USING_TIME
-    bool "Enable time functions without compiler's libc"
-    default y
 endif

 config RT_LIBC_DEFAULT_TIMEZONE
-    depends on (RT_LIBC_USING_TIME || RT_USING_LIBC)
    int "Set the default time zone (UTC+)"
    range -12 12
    default 8
@@ -1,9 +1,3 @@
 # ARMLIB (Keil-MDK) porting for RT-Thread

-Please define RT_USING_LIBC and compile RT-Thread with Keil-MDK compiler.
-
-
-
-## More Information
-
 https://www.keil.com/support/man/docs/armlib/
@@ -7,6 +7,6 @@ group = []
 CPPDEFINES = ['RT_USING_ARM_LIBC']

 if rtconfig.PLATFORM == 'armcc' or rtconfig.PLATFORM == 'armclang':
-    group = DefineGroup('libc', src, depend = ['RT_USING_LIBC'], CPPDEFINES = CPPDEFINES)
+    group = DefineGroup('compiler-libc', src, depend = [], CPPDEFINES = CPPDEFINES)

 Return('group')
@@ -13,7 +13,7 @@
 #include <stddef.h>

 #ifndef RT_USING_HEAP
-#define DBG_TAG    "armlibc.mem"
+#define DBG_TAG    "armlibc.syscall.mem"
 #define DBG_LVL    DBG_INFO
 #include <rtdbg.h>

@@ -21,6 +21,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <sys/stat.h>
+#include <compiler_private.h>
 #ifdef RT_USING_POSIX_DEVIO
 #include "libc.h"
 #endif /* RT_USING_POSIX_DEVIO */
@@ -69,6 +70,7 @@ FILEHANDLE _sys_open(const char *name, int openmode)
        return (STDERR);

 #ifndef DFS_USING_POSIX
+    LOG_W("%s: %s", __func__, warning_without_fs);
    return 0; /* error */
 #else
    /* Correct openmode from fopen to open */
@@ -113,6 +115,7 @@ int _sys_close(FILEHANDLE fh)

    return close(fh);
 #else
+    LOG_W("%s: %s", __func__, warning_without_fs);
    return 0;
 #endif /* DFS_USING_POSIX */
 }
@@ -152,12 +155,13 @@ int _sys_read(FILEHANDLE fh, unsigned char *buf, unsigned len, int mode)
 #ifdef RT_USING_POSIX_DEVIO
        if (libc_stdio_get_console() < 0)
        {
-            LOG_W("Do not invoke standard output before initializing libc");
+            LOG_W("Do not invoke standard output before initializing compiler-libc");
            return 0; /* error, but keep going */
        }
        size = read(STDIN_FILENO, buf, len);
        return len - size; /* success */
 #else
+        LOG_W("%s: %s", __func__, warning_without_devio);
        return 0; /* error */
 #endif /* RT_USING_POSIX_DEVIO */
    }
@@ -178,6 +182,7 @@ int _sys_read(FILEHANDLE fh, unsigned char *buf, unsigned len, int mode)
        }
    }
 #else
+    LOG_W("%s: %s", __func__, warning_without_fs);
    return 0; /* error */
 #endif /* DFS_USING_POSIX */
 }
@@ -228,6 +233,7 @@ int _sys_write(FILEHANDLE fh, const unsigned char *buf, unsigned len, int mode)
            return 0; /* error */
        }
 #else
+        LOG_W("%s: %s", __func__, warning_without_fs);
        return 0; /* error */
 #endif /* DFS_USING_POSIX */
    }
@@ -246,6 +252,7 @@ int _sys_seek(FILEHANDLE fh, long pos)
    /* position is relative to the start of file fh */
    return lseek(fh, pos, 0);
 #else
+    LOG_W("%s: %s", __func__, warning_without_fs);
    return 0; /* error */
 #endif /* DFS_USING_POSIX */
 }
@@ -301,6 +308,7 @@ long _sys_flen(FILEHANDLE fh)
    fstat(fh, &stat);
    return stat.st_size;
 #else
+    LOG_W("%s: %s", __func__, warning_without_fs);
    return 0;
 #endif /* DFS_USING_POSIX */
 }
@@ -318,6 +326,7 @@ int remove(const char *filename)
 #ifdef DFS_USING_POSIX
    return unlink(filename);
 #else
+    LOG_W("%s: %s", __func__, warning_without_fs);
    return 0; /* error */
 #endif /* DFS_USING_POSIX */
 }
@@ -345,13 +354,14 @@ int fgetc(FILE *f)

    if (libc_stdio_get_console() < 0)
    {
-        LOG_W("Do not invoke standard output before initializing libc");
+        LOG_W("Do not invoke standard output before initializing compiler-libc");
        return 0;
    }

    if(read(STDIN_FILENO, &ch, 1) == 1)
        return ch;
 #endif /* RT_USING_POSIX_DEVIO */
+    LOG_W("%s: %s", __func__, warning_without_devio);
    return 0; /* error */
 }

@@ -10,12 +10,9 @@ CPPDEFINES = []
 if rtconfig.CROSS_TOOL == 'keil':
    CPPDEFINES += ['__CLK_TCK=RT_TICK_PER_SECOND']

-if GetDepend('RT_USING_LIBC'):
-    src += Glob('*.c')
-elif GetDepend('RT_LIBC_USING_TIME'):
-    src += ['time.c']
+src += Glob('*.c')

-group = DefineGroup('libc', src, depend = [], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
+group = DefineGroup('compiler-libc', src, depend = [], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)

 list = os.listdir(cwd)
 for item in list:
@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-12-26     Meco Man     First Version
+ */
+#include "compiler_private.h"
+
+const char *warning_without_fs = "Please enable RT_USING_POSIX_FS";
+const char *warning_without_devio = "Please enable RT_USING_POSIX_FS and RT_USING_POSIX_DEVIO";
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-12-26     Meco Man     First Version
+ */
+#ifndef __COMPILER_PRIVATE_H__
+#define __COMPILER_PRIVATE_H__
+
+#include <rtconfig.h>
+
+extern const char *warning_without_fs;
+extern const char *warning_without_devio;
+
+#endif /* __COMPILER_PRIVATE_H__ */
@@ -7,9 +7,8 @@ cwd   = GetCurrentDir()
 CPPPATH = [cwd]
 group = []

-if GetDepend('RT_USING_LIBC'):
-    src += Glob('*.c')
+src += Glob('*.c')

 if rtconfig.PLATFORM != 'gcc' or rtconfig.ARCH == 'sim':
-    group = DefineGroup('libc', src, depend = [], CPPPATH = CPPPATH)
+    group = DefineGroup('compiler-libc', src, depend = [], CPPPATH = CPPPATH)
 Return('group')
@@ -25,7 +25,7 @@
 #include <sys/errno.h>
 #include <rtthread.h>
 #include <rthw.h>
-#ifdef RT_USING_DEVICE
+#ifdef RT_USING_RTC
 #include <rtdevice.h>
 #endif

@@ -33,6 +33,8 @@
 #define DBG_LVL    DBG_INFO
 #include <rtdbg.h>

+#define WARNING_NO_RTC "Cannot find a RTC device!"
+
 /* seconds per day */
 #define SPD 24*60*60

@@ -108,7 +110,7 @@ static rt_err_t get_timeval(struct timeval *tv)
    else
    {
        /* LOG_W will cause a recursive printing if ulog timestamp function is enabled */
-        rt_kprintf("Cannot find a RTC device to provide time!\r\n");
+        rt_kprintf(WARNING_NO_RTC);
        return -RT_ENOSYS;
    }

@@ -116,7 +118,7 @@ static rt_err_t get_timeval(struct timeval *tv)

 #else
    /* LOG_W will cause a recursive printing if ulog timestamp function is enabled */
-    rt_kprintf("Cannot find a RTC device to provide time!\r\n");
+    rt_kprintf(WARNING_NO_RTC);
    return -RT_ENOSYS;
 #endif /* RT_USING_RTC */
 }
@@ -153,14 +155,14 @@ static int set_timeval(struct timeval *tv)
    }
    else
    {
-        LOG_W("Cannot find a RTC device to provide time!");
+        LOG_W(WARNING_NO_RTC);
        return -RT_ENOSYS;
    }

    return rst;

 #else
-    LOG_W("Cannot find a RTC device to provide time!");
+    LOG_W(WARNING_NO_RTC);
    return -RT_ENOSYS;
 #endif /* RT_USING_RTC */
 }
@@ -525,7 +527,7 @@ INIT_COMPONENT_EXPORT(_rt_clock_time_system_init);
 int clock_getres(clockid_t clockid, struct timespec *res)
 {
 #ifndef RT_USING_RTC
-    LOG_W("Cannot find a RTC device to save time!");
+    LOG_W(WARNING_NO_RTC);
    return -1;
 #else
    int ret = 0;
@@ -564,7 +566,7 @@ RTM_EXPORT(clock_getres);
 int clock_gettime(clockid_t clockid, struct timespec *tp)
 {
 #ifndef RT_USING_RTC
-    LOG_W("Cannot find a RTC device to save time!");
+    LOG_W(WARNING_NO_RTC);
    return -1;
 #else
    int ret = 0;
@@ -628,7 +630,7 @@ int clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp, s
 int clock_settime(clockid_t clockid, const struct timespec *tp)
 {
 #ifndef RT_USING_RTC
-    LOG_W("Cannot find a RTC device to save time!");
+    LOG_W(WARNING_NO_RTC);
    return -1;
 #else
    register rt_base_t level;
@@ -1,9 +1,3 @@
 # DLIB (IAR) porting for RT-Thread

-Please define RT_USING_LIBC and compile RT-Thread with IAR compiler.
-
-
-
-## More Information
-
 http://www.iarsys.co.jp/download/LMS2/arm/7502/ewarm7502doc/arm/doc/EWARM_DevelopmentGuide.ENU.pdf    P.130
@@ -15,6 +15,6 @@ if rtconfig.PLATFORM == 'iar':
        if LooseVersion(IARVersion()) < LooseVersion("8.20.1"):
            CPPDEFINES = CPPDEFINES + ['_DLIB_THREAD_SUPPORT']

-    group = DefineGroup('libc', src, depend = ['RT_USING_LIBC'], CPPDEFINES = CPPDEFINES)
+    group = DefineGroup('compiler-libc', src, depend = [], CPPDEFINES = CPPDEFINES)

 Return('group')
@@ -10,6 +10,10 @@
 #include <rtthread.h>
 #include <LowLevelIOInterface.h>
 #include <unistd.h>
+#include <compiler_private.h>
+#define DBG_TAG    "dlib.syscall.close"
+#define DBG_LVL    DBG_INFO
+#include <rtdbg.h>

 /*
 * The "__close" function should close the file corresponding to
@@ -27,6 +31,7 @@ int __close(int handle)
 #ifdef DFS_USING_POSIX
    return close(handle);
 #else
+    LOG_W(warning_without_fs);
    return _LLIO_ERROR;
 #endif /* DFS_USING_POSIX */
 }
@@ -10,6 +10,10 @@
 #include <rtthread.h>
 #include <LowLevelIOInterface.h>
 #include <unistd.h>
+#include <compiler_private.h>
+#define DBG_TAG    "dlib.syscall.lseek"
+#define DBG_LVL    DBG_INFO
+#include <rtdbg.h>

 /*
 * The "__lseek" function makes the next file operation (__read or
@@ -36,6 +40,7 @@ long __lseek(int handle, long offset, int whence)
 #ifdef DFS_USING_POSIX
    return lseek(handle, offset, whence);
 #else
+    LOG_W(warning_without_fs);
    return _LLIO_ERROR;
 #endif /* DFS_USING_POSIX */
 }
@@ -12,7 +12,7 @@
 #include <stddef.h>

 #ifndef RT_USING_HEAP
-#define DBG_TAG    "dlib.syscall_mem"
+#define DBG_TAG    "dlib.syscall.mem"
 #define DBG_LVL    DBG_INFO
 #include <rtdbg.h>
 #define _NO_HEAP_ERROR()  do{LOG_E("Please enable RT_USING_HEAP");\
@@ -11,6 +11,10 @@
 #include <rtthread.h>
 #include <LowLevelIOInterface.h>
 #include <fcntl.h>
+#include <compiler_private.h>
+#define DBG_TAG    "dlib.syscall.open"
+#define DBG_LVL    DBG_INFO
+#include <rtdbg.h>

 /*
 * The "__open" function opens the file named "filename" as specified
@@ -22,56 +26,58 @@
 int __open(const char *filename, int mode)
 {
 #ifdef DFS_USING_POSIX
-  int handle;
-  int open_mode = O_RDONLY;
+    int handle;
+    int open_mode = O_RDONLY;

-  if (mode & _LLIO_CREAT)
-  {
-    open_mode |= O_CREAT;
-
-    /* Check what we should do with it if it exists. */
-    if (mode & _LLIO_APPEND)
+    if (mode & _LLIO_CREAT)
    {
-      /* Append to the existing file. */
-      open_mode |= O_APPEND;
+        open_mode |= O_CREAT;
+
+        /* Check what we should do with it if it exists. */
+        if (mode & _LLIO_APPEND)
+        {
+            /* Append to the existing file. */
+            open_mode |= O_APPEND;
+        }
+
+        if (mode & _LLIO_TRUNC)
+        {
+            /* Truncate the existsing file. */
+            open_mode |= O_TRUNC;
+        }
    }

-    if (mode & _LLIO_TRUNC)
+    if (mode & _LLIO_TEXT)
    {
-      /* Truncate the existsing file. */
-      open_mode |= O_TRUNC;
+        /* we didn't support text mode */
    }
-  }

-  if (mode & _LLIO_TEXT)
-  {
-    /* we didn't support text mode */
-  }
+    switch (mode & _LLIO_RDWRMASK)
+    {
+    case _LLIO_RDONLY:
+        break;

-  switch (mode & _LLIO_RDWRMASK)
-  {
-  case _LLIO_RDONLY:
-    break;
+    case _LLIO_WRONLY:
+        open_mode |= O_WRONLY;
+        break;

-  case _LLIO_WRONLY:
-    open_mode |= O_WRONLY;
-    break;
+    case _LLIO_RDWR:
+        /* The file should be opened for both reads and writes. */
+        open_mode |= O_RDWR;
+        break;

-  case _LLIO_RDWR:
-    /* The file should be opened for both reads and writes. */
-    open_mode |= O_RDWR;
-    break;
+    default:
+        return _LLIO_ERROR;
+    }

-  default:
-    return _LLIO_ERROR;
-  }
-
-  handle = open(filename, open_mode, 0);
-  if (handle < 0)
-    return _LLIO_ERROR;
-
-  return handle;
+    handle = open(filename, open_mode, 0);
+    if (handle < 0)
+    {
+        return _LLIO_ERROR;
+    }
+    return handle;
 #else
-  return _LLIO_ERROR;
+    LOG_W(warning_without_fs);
+    return _LLIO_ERROR;
 #endif /* DFS_USING_POSIX */
 }
@@ -14,8 +14,8 @@
 #ifdef RT_USING_POSIX_DEVIO
 #include "libc.h"
 #endif /* RT_USING_POSIX_DEVIO */
-
-#define DBG_TAG    "dlib.syscall_read"
+#include <compiler_private.h>
+#define DBG_TAG    "dlib.syscall.read"
 #define DBG_LVL    DBG_INFO
 #include <rtdbg.h>

@@ -42,11 +42,12 @@ size_t __read(int handle, unsigned char *buf, size_t len)
 #ifdef RT_USING_POSIX_DEVIO
        if (libc_stdio_get_console() < 0)
        {
-            LOG_W("Do not invoke standard input before initializing libc");
+            LOG_W("Do not invoke standard input before initializing compiler-libc");
            return 0; /* error, but keep going */
        }
        return read(STDIN_FILENO, buf, len); /* return the length of the data read */
 #else
+        LOG_W(warning_without_devio);
        return _LLIO_ERROR;
 #endif /* RT_USING_POSIX_DEVIO */
    }
@@ -58,6 +59,7 @@ size_t __read(int handle, unsigned char *buf, size_t len)
    size = read(handle, buf, len);
    return size; /* return the length of the data read */
 #else
+    LOG_W(warning_without_fs);
    return _LLIO_ERROR;
 #endif /* DFS_USING_POSIX */
 }
@@ -10,6 +10,10 @@
 #include <rtthread.h>
 #include <LowLevelIOInterface.h>
 #include <unistd.h>
+#include <compiler_private.h>
+#define DBG_TAG    "dlib.syscall.remove"
+#define DBG_LVL    DBG_INFO
+#include <rtdbg.h>

 /*
 * The "remove" function should remove the file named "filename".  It
@@ -23,6 +27,7 @@ int remove(const char *filename)
 #ifdef DFS_USING_POSIX
    return unlink(filename);
 #else
+    LOG_W(warning_without_fs);
    return _LLIO_ERROR;
 #endif /* DFS_USING_POSIX */
 }
@@ -11,7 +11,8 @@
 #include <rtthread.h>
 #include <LowLevelIOInterface.h>
 #include <unistd.h>
-#define DBG_TAG    "dlib.syscall_write"
+#include <compiler_private.h>
+#define DBG_TAG    "dlib.syscall.write"
 #define DBG_LVL    DBG_INFO
 #include <rtdbg.h>

@@ -63,6 +64,7 @@ size_t __write(int handle, const unsigned char *buf, size_t len)
        size = write(handle, buf, len);
        return size; /* return the length of the data written */
 #else
+        LOG_W(warning_without_fs);
        return _LLIO_ERROR;
 #endif /* DFS_USING_POSIX */
    }
@@ -1,10 +1,4 @@
 # NEWLIB (GCC) porting for RT-Thread

-Please define RT_USING_LIBC and compile RT-Thread with GCC compiler.
-
-
-
-## More Information
-
 https://sourceware.org/newlib/libc.html#Reentrancy

--- a/Show More
+++ b/Show More