1 files changed, 0 insertions, 216 deletions
diff --git a/components/cplusplus/cpp11/emutls.c b/components/cplusplus/cpp11/emutls.c
deleted file mode 100644
index 576888f16f..0000000000
--- a/components/cplusplus/cpp11/emutls.c
+++ /dev/null
@@ -1,216 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2021-04-27     peterfan     Add copyright header.
- */
-
-/* ===---------- emutls.c - Implements __emutls_get_address ---------------===
- *
- *                     The LLVM Compiler Infrastructure
- *
- * This file is dual licensed under the MIT and the University of Illinois Open
- * Source Licenses. See LICENSE.TXT for details.
- *
- * ===----------------------------------------------------------------------===
- */
-
-#include <pthread.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define COMPILE_TIME_ASSERT(x)
-
-extern int pthread_key_create(pthread_key_t *key, void (*destructor)(void *));
-extern int pthread_key_delete(pthread_key_t key);
-extern void *pthread_getspecific(pthread_key_t key);
-extern int pthread_setspecific(pthread_key_t key, const void *value);
-
-/* Default is not to use posix_memalign, so systems like Android
- * can use thread local data without heavier POSIX memory allocators.
- */
-#ifndef EMUTLS_USE_POSIX_MEMALIGN
-#define EMUTLS_USE_POSIX_MEMALIGN 0
-#endif
-
-/* For every TLS variable xyz,
- * there is one __emutls_control variable named __emutls_v.xyz.
- * If xyz has non-zero initial value, __emutls_v.xyz's "value"
- * will point to __emutls_t.xyz, which has the initial value.
- */
-typedef struct __emutls_control
-{
-    size_t size;  /* size of the object in bytes */
-    size_t align; /* alignment of the object in bytes */
-    union
-    {
-        uintptr_t index; /* data[index-1] is the object address */
-        void *address;   /* object address, when in single thread env */
-    } object;
-    void *value; /* null or non-zero initial value for the object */
-} __emutls_control;
-
-static __inline void *emutls_memalign_alloc(size_t align, size_t size)
-{
-    void *base;
-#if EMUTLS_USE_POSIX_MEMALIGN
-    if (posix_memalign(&base, align, size) != 0)
-        abort();
-#else
-#define EXTRA_ALIGN_PTR_BYTES (align - 1 + sizeof(void *))
-    char *object;
-    if ((object = malloc(EXTRA_ALIGN_PTR_BYTES + size)) == NULL)
-        abort();
-    base = (void *)(((uintptr_t)(object + EXTRA_ALIGN_PTR_BYTES)) & ~(uintptr_t)(align - 1));
-
-    ((void **)base)[-1] = object;
-#endif
-    return base;
-}
-
-static __inline void emutls_memalign_free(void *base)
-{
-#if EMUTLS_USE_POSIX_MEMALIGN
-    free(base);
-#else
-    /* The mallocated address is in ((void**)base)[-1] */
-    free(((void **)base)[-1]);
-#endif
-}
-
-/* Emulated TLS objects are always allocated at run-time. */
-static __inline void *emutls_allocate_object(__emutls_control *control)
-{
-    /* Use standard C types, check with gcc's emutls.o. */
-    typedef unsigned int gcc_word __attribute__((mode(word)));
-    typedef unsigned int gcc_pointer __attribute__((mode(pointer)));
-    COMPILE_TIME_ASSERT(sizeof(size_t) == sizeof(gcc_word));
-    COMPILE_TIME_ASSERT(sizeof(uintptr_t) == sizeof(gcc_pointer));
-    COMPILE_TIME_ASSERT(sizeof(uintptr_t) == sizeof(void *));
-
-    size_t size = control->size;
-    size_t align = control->align;
-    if (align < sizeof(void *))
-        align = sizeof(void *);
-    /* Make sure that align is power of 2. */
-    if ((align & (align - 1)) != 0)
-        abort();
-
-    void *base = emutls_memalign_alloc(align, size);
-    if (control->value)
-        memcpy(base, control->value, size);
-    else
-        memset(base, 0, size);
-    return base;
-}
-
-static pthread_mutex_t emutls_mutex = PTHREAD_MUTEX_INITIALIZER;
-
-static size_t emutls_num_object = 0; /* number of allocated TLS objects */
-
-typedef struct emutls_address_array
-{
-    uintptr_t size; /* number of elements in the 'data' array */
-    void *data[];
-} emutls_address_array;
-
-static pthread_key_t emutls_pthread_key;
-
-static void emutls_key_destructor(void *ptr)
-{
-    emutls_address_array *array = (emutls_address_array *)ptr;
-    uintptr_t i;
-    for (i = 0; i < array->size; ++i)
-    {
-        if (array->data[i])
-            emutls_memalign_free(array->data[i]);
-    }
-    free(ptr);
-}
-
-static void emutls_init(void)
-{
-    if (pthread_key_create(&emutls_pthread_key, emutls_key_destructor) != 0)
-        abort();
-}
-
-/* Returns control->object.index; set index if not allocated yet. */
-static __inline uintptr_t emutls_get_index(__emutls_control *control)
-{
-    uintptr_t index = __atomic_load_n(&control->object.index, __ATOMIC_ACQUIRE);
-    if (!index)
-    {
-        static pthread_once_t once = PTHREAD_ONCE_INIT;
-        pthread_once(&once, emutls_init);
-        pthread_mutex_lock(&emutls_mutex);
-        index = control->object.index;
-        if (!index)
-        {
-            index = ++emutls_num_object;
-            __atomic_store_n(&control->object.index, index, __ATOMIC_RELEASE);
-        }
-        pthread_mutex_unlock(&emutls_mutex);
-    }
-    return index;
-}
-
-/* Updates newly allocated thread local emutls_address_array. */
-static __inline void emutls_check_array_set_size(emutls_address_array *array,
-                                                 uintptr_t size)
-{
-    if (array == NULL)
-        abort();
-    array->size = size;
-    pthread_setspecific(emutls_pthread_key, (void *)array);
-}
-
-/* Returns the new 'data' array size, number of elements,
- * which must be no smaller than the given index.
- */
-static __inline uintptr_t emutls_new_data_array_size(uintptr_t index)
-{
-    /* Need to allocate emutls_address_array with one extra slot
-     * to store the data array size.
-     * Round up the emutls_address_array size to multiple of 16.
-     */
-    return ((index + 1 + 15) & ~((uintptr_t)15)) - 1;
-}
-
-/* Returns the thread local emutls_address_array.
- * Extends its size if necessary to hold address at index.
- */
-static __inline emutls_address_array *
-emutls_get_address_array(uintptr_t index)
-{
-    emutls_address_array *array = pthread_getspecific(emutls_pthread_key);
-    if (array == NULL)
-    {
-        uintptr_t new_size = emutls_new_data_array_size(index);
-        array = calloc(new_size + 1, sizeof(void *));
-        emutls_check_array_set_size(array, new_size);
-    }
-    else if (index > array->size)
-    {
-        uintptr_t orig_size = array->size;
-        uintptr_t new_size = emutls_new_data_array_size(index);
-        array = realloc(array, (new_size + 1) * sizeof(void *));
-        if (array)
-            memset(array->data + orig_size, 0,
-                   (new_size - orig_size) * sizeof(void *));
-        emutls_check_array_set_size(array, new_size);
-    }
-    return array;
-}
-
-void *__emutls_get_address(void *control)
-{
-    uintptr_t index = emutls_get_index((__emutls_control *)control);
-    emutls_address_array *array = emutls_get_address_array(index);
-    if (array->data[index - 1] == NULL)
-        array->data[index - 1] = emutls_allocate_object((__emutls_control *)control);
-    return array->data[index - 1];
-}