Add build configuration for Mac

This patch implements Mac build basically based on Linux platform
implementations and configurations.

The document to build it on Mac has been updated as well.

.gitignore

@@ -0,0 +1,2 @@
+.vscode
+**/*build/

README.md

@@ -67,6 +67,25 @@ cd build
 cmake ..
 make
 ```
+
+Mac
+-------------------------
+Make sure to install Xcode from App Store firstly, and install cmake.
+
+If you use Homebrew, install cmake from the command line:
+``` Bash
+brew install cmake
+```
+
+Then build the source codes:
+```
+cd core/iwasm/products/darwin/
+mkdir build
+cd build
+cmake ..
+make
+```
+
 VxWorks
 -------------------------
 VxWorks 7 SR0620 release is validated.

core/iwasm/products/darwin/CMakeLists.txt

@@ -0,0 +1,107 @@
+# Copyright (C) 2019 Intel Corporation.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+cmake_minimum_required (VERSION 2.8)
+
+project (iwasm)
+
+set (PLATFORM "darwin")
+
+# Reset default linker flags
+set (CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
+set (CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")
+
+# Enable repl mode if want to test spec cases
+# add_definitions(-DWASM_ENABLE_REPL)
+
+if (NOT ("$ENV{VALGRIND}" STREQUAL "YES"))
+  add_definitions(-DNVALGRIND)
+endif ()
+
+# Currently build as 64-bit by default.
+set (BUILD_AS_64BIT_SUPPORT "YES")
+
+if (CMAKE_SIZEOF_VOID_P EQUAL 8)
+if (${BUILD_AS_64BIT_SUPPORT} STREQUAL "YES")
+  # Add -fPIC flag if build as 64-bit
+  set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
+  set (CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "${CMAKE_SHARED_LIBRARY_LINK_C_FLAGS} -fPIC")
+else ()
+  add_definitions (-m32)
+  set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -m32")
+  set (CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -m32")
+endif ()
+endif ()
+
+if (NOT CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE Release)
+endif (NOT CMAKE_BUILD_TYPE)
+message ("CMAKE_BUILD_TYPE = " ${CMAKE_BUILD_TYPE})
+
+set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl")
+set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ffunction-sections -fdata-sections -Wall -Wno-unused-parameter -Wno-pedantic")
+
+set (CMAKE_MACOSX_RPATH True)
+
+set (SHARED_LIB_DIR ../../../shared-lib)
+
+include_directories (.
+                     ../../runtime/include
+                     ../../runtime/platform/include
+                     ${SHARED_LIB_DIR}/include)
+
+enable_language (ASM)
+
+include (../../runtime/platform/${PLATFORM}/platform.cmake)
+include (../../runtime/utils/utils.cmake)
+include (../../runtime/vmcore-wasm/vmcore.cmake)
+include (../../lib/native/base/wasm_lib_base.cmake)
+include (../../lib/native/libc/wasm_libc.cmake)
+include (${SHARED_LIB_DIR}/platform/${PLATFORM}/shared_platform.cmake)
+include (${SHARED_LIB_DIR}/mem-alloc/mem_alloc.cmake)
+include (${SHARED_LIB_DIR}/utils/shared_utils.cmake)
+
+add_library (vmlib
+             ${WASM_PLATFORM_LIB_SOURCE}
+             ${WASM_UTILS_LIB_SOURCE}
+             ${VMCORE_LIB_SOURCE}
+             ${WASM_LIB_BASE_DIR}/base_lib_export.c
+             ${WASM_LIBC_SOURCE}
+             ${PLATFORM_SHARED_SOURCE}
+             ${MEM_ALLOC_SHARED_SOURCE}
+             ${UTILS_SHARED_SOURCE})
+
+add_executable (iwasm main.c ext_lib_export.c)
+
+install (TARGETS iwasm DESTINATION bin)
+
+target_link_libraries (iwasm vmlib -lm -ldl -lpthread)
+
+add_library (libiwasm SHARED
+             ${WASM_PLATFORM_LIB_SOURCE}
+             ${WASM_UTILS_LIB_SOURCE}
+             ${VMCORE_LIB_SOURCE}
+             ${WASM_LIB_BASE_DIR}/base_lib_export.c
+             ${WASM_LIBC_SOURCE}
+             ${PLATFORM_SHARED_SOURCE}
+             ${MEM_ALLOC_SHARED_SOURCE}
+             ${UTILS_SHARED_SOURCE}
+             ext_lib_export.c)
+
+install (TARGETS libiwasm DESTINATION lib)
+
+set_target_properties (libiwasm PROPERTIES OUTPUT_NAME iwasm)
+
+target_link_libraries (libiwasm -lm -ldl -lpthread)
+

core/iwasm/products/darwin/ext_lib_export.c

@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "lib_export.h"
+
+static NativeSymbol extended_native_symbol_defs[] = { };
+
+#include "ext_lib_export.h"

core/iwasm/products/darwin/main.c

@@ -0,0 +1,251 @@
+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "bh_platform.h"
+#include "wasm_application.h"
+#include "wasm_assert.h"
+#include "wasm_log.h"
+#include "wasm_platform_log.h"
+#include "wasm_thread.h"
+#include "wasm_export.h"
+#include "wasm_memory.h"
+#include "bh_memory.h"
+
+static int app_argc;
+static char **app_argv;
+
+static int print_help()
+{
+    wasm_printf("Usage: iwasm [-options] wasm_file [args...]\n");
+    wasm_printf("options:\n");
+    wasm_printf("  -f|--function name     Specify function name to run in module\n"
+                "                         rather than main\n");
+#if WASM_ENABLE_LOG != 0
+    wasm_printf("  -v=X                   Set log verbose level (0 to 2, default is 1),\n"
+                "                         larger level with more log\n");
+#endif
+    wasm_printf("  --repl                 Start a very simple REPL (read-eval-print-loop) mode\n"
+                "                         that runs commands in the form of `FUNC ARG...`\n");
+    return 1;
+}
+
+static void*
+app_instance_main(wasm_module_inst_t module_inst)
+{
+    const char *exception;
+
+    wasm_application_execute_main(module_inst, app_argc, app_argv);
+    if ((exception = wasm_runtime_get_exception(module_inst)))
+        wasm_printf("%s\n", exception);
+    return NULL;
+}
+
+static void*
+app_instance_func(wasm_module_inst_t module_inst, const char *func_name)
+{
+    const char *exception;
+
+    wasm_application_execute_func(module_inst, func_name, app_argc - 1,
+                                  app_argv + 1);
+    if ((exception = wasm_runtime_get_exception(module_inst)))
+        wasm_printf("%s\n", exception);
+    return NULL;
+}
+
+/**
+ * Split a space separated strings into an array of strings
+ * Returns NULL on failure
+ * Memory must be freed by caller
+ * Based on: http://stackoverflow.com/a/11198630/471795
+ */
+static char **
+split_string(char *str, int *count)
+{
+    char **res = NULL;
+    char *p;
+    int idx = 0;
+
+    /* split string and append tokens to 'res' */
+    do {
+        p = strtok(str, " ");
+        str = NULL;
+        res = (char**) realloc(res, sizeof(char*) * (idx + 1));
+        if (res == NULL) {
+            return NULL;
+        }
+        res[idx++] = p;
+    } while (p);
+
+    if (count) {
+        *count = idx - 1;
+    }
+    return res;
+}
+
+static void*
+app_instance_repl(wasm_module_inst_t module_inst)
+{
+    char *cmd = NULL;
+    size_t len = 0;
+    ssize_t n;
+
+    while ((wasm_printf("webassembly> "), n = getline(&cmd, &len, stdin)) != -1) {
+        wasm_assert(n > 0);
+        if (cmd[n - 1] == '\n') {
+            if (n == 1)
+                continue;
+            else
+                cmd[n - 1] = '\0';
+        }
+        app_argv = split_string(cmd, &app_argc);
+        if (app_argv == NULL) {
+            LOG_ERROR("Wasm prepare param failed: split string failed.\n");
+            break;
+        }
+        if (app_argc != 0) {
+            wasm_application_execute_func(module_inst, app_argv[0],
+                                          app_argc - 1, app_argv + 1);
+        }
+        free(app_argv);
+    }
+    free(cmd);
+    return NULL;
+}
+
+#define USE_GLOBAL_HEAP_BUF 0
+
+#if USE_GLOBAL_HEAP_BUF != 0
+static char global_heap_buf[10 * 1024 * 1024] = { 0 };
+#endif
+
+int main(int argc, char *argv[])
+{
+    char *wasm_file = NULL;
+    const char *func_name = NULL;
+    uint8 *wasm_file_buf = NULL;
+    int wasm_file_size;
+    wasm_module_t wasm_module = NULL;
+    wasm_module_inst_t wasm_module_inst = NULL;
+    char error_buf[128];
+#if WASM_ENABLE_LOG != 0
+    int log_verbose_level = 1;
+#endif
+    bool is_repl_mode = false;
+
+    /* Process options.  */
+    for (argc--, argv++; argc > 0 && argv[0][0] == '-'; argc--, argv++) {
+        if (!strcmp(argv[0], "-f") || !strcmp(argv[0], "--function")) {
+            argc--, argv++;
+            if (argc < 2) {
+                print_help();
+                return 0;
+            }
+            func_name = argv[0];
+        }
+#if WASM_ENABLE_LOG != 0
+        else if (!strncmp(argv[0], "-v=", 3)) {
+            log_verbose_level = atoi(argv[0] + 3);
+            if (log_verbose_level < 0 || log_verbose_level > 2)
+                return print_help();
+        }
+#endif
+        else if (!strcmp(argv[0], "--repl"))
+            is_repl_mode = true;
+        else
+            return print_help();
+    }
+
+    if (argc == 0)
+        return print_help();
+
+    wasm_file = argv[0];
+    app_argc = argc;
+    app_argv = argv;
+
+#if USE_GLOBAL_HEAP_BUF != 0
+    if (bh_memory_init_with_pool(global_heap_buf, sizeof(global_heap_buf))
+        != 0) {
+        wasm_printf("Init memory with global heap buffer failed.\n");
+        return -1;
+    }
+#else
+    if (bh_memory_init_with_allocator(malloc, free)) {
+        wasm_printf("Init memory with memory allocator failed.\n");
+        return -1;
+    }
+#endif
+
+    /* initialize runtime environment */
+    if (!wasm_runtime_init())
+        goto fail1;
+
+    wasm_log_set_verbose_level(log_verbose_level);
+
+    /* load WASM byte buffer from WASM bin file */
+    if (!(wasm_file_buf = (uint8*) bh_read_file_to_buffer(wasm_file,
+                                                          &wasm_file_size)))
+        goto fail2;
+
+    /* load WASM module */
+    if (!(wasm_module = wasm_runtime_load(wasm_file_buf, wasm_file_size,
+                                          error_buf, sizeof(error_buf)))) {
+        wasm_printf("%s\n", error_buf);
+        goto fail3;
+    }
+
+    /* instantiate the module */
+    if (!(wasm_module_inst = wasm_runtime_instantiate(wasm_module,
+                                                      64 * 1024, /* stack size */
+                                                      64 * 1024, /* heap size */
+                                                      error_buf,
+                                                      sizeof(error_buf)))) {
+        wasm_printf("%s\n", error_buf);
+        goto fail4;
+    }
+
+    if (is_repl_mode)
+        app_instance_repl(wasm_module_inst);
+    else if (func_name)
+        app_instance_func(wasm_module_inst, func_name);
+    else
+        app_instance_main(wasm_module_inst);
+
+    /* destroy the module instance */
+    wasm_runtime_deinstantiate(wasm_module_inst);
+
+fail4:
+    /* unload the module */
+    wasm_runtime_unload(wasm_module);
+
+fail3:
+    /* free the file buffer */
+    wasm_free(wasm_file_buf);
+
+fail2:
+    /* destroy runtime environment */
+    wasm_runtime_destroy();
+
+fail1:
+    bh_memory_destroy();
+    return 0;
+}
+

core/iwasm/runtime/include/lib_export.h

@@ -39,16 +39,6 @@ typedef struct NativeSymbol {
 int
 get_base_lib_export_apis(NativeSymbol **p_base_lib_apis);
 
-/**
- * Get the exported APIs of extend lib
- *
- * @param p_base_lib_apis return the exported API array of extend lib
- *
- * @return the number of the exported API
- */
-int
-get_extend_lib_export_apis(NativeSymbol **p_base_lib_apis);
-
 #ifdef __cplusplus
 }
 #endif

core/iwasm/runtime/include/wasm_application.h

@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2019 Taobao (China) Inc.  All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _WASM_APPLICATION_H
+#define _WASM_APPLICATION_H
+
+//#include "wasm_runtime.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct WASMModuleInstance;
+
+bool
+wasm_application_execute_main(struct WASMModuleInstance *module_inst,
+                              int argc, char *argv[]);
+
+bool
+wasm_application_execute_func(struct WASMModuleInstance *module_inst,
+                              char *name, int argc, char *argv[]);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* end of _WASM_APPLICATION_H */
+

core/iwasm/runtime/platform/darwin/platform.cmake

@@ -0,0 +1,25 @@
+# Copyright (C) 2019 Intel Corporation.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+add_definitions (-D__POSIX__ -D_XOPEN_SOURCE=600 -D_POSIX_C_SOURCE=200809L)
+
+set (PLATFORM_LIB_DIR ${CMAKE_CURRENT_LIST_DIR})
+
+include_directories(${PLATFORM_LIB_DIR})
+include_directories(${PLATFORM_LIB_DIR}/../include)
+
+file (GLOB_RECURSE source_all ${PLATFORM_LIB_DIR}/*.c)
+
+set (WASM_PLATFORM_LIB_SOURCE ${source_all})
+

core/iwasm/runtime/platform/darwin/wasm_native.c

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "wasm_native.h"
+
+void*
+wasm_platform_native_func_lookup(const char *module_name,
+                                 const char *func_name)
+{
+    return NULL;
+}
+

core/iwasm/runtime/vmcore-wasm/wasm_application.c

@@ -18,6 +18,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include "wasm.h"
+#include "wasm_application.h"
 #include "wasm_interp.h"
 #include "wasm_runtime.h"
 #include "wasm_thread.h"

core/shared-lib/platform/darwin/bh_assert.c

@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "bh_platform.h"
+#include "bh_assert.h"
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifdef BH_TEST
+#include <setjmp.h>
+#endif
+
+#ifdef BH_TEST
+/* for exception throwing */
+jmp_buf bh_test_jb;
+#endif
+
+void bh_assert_internal(int v, const char *file_name, int line_number,
+        const char *expr_string)
+{
+    if (v)
+        return;
+
+    if (!file_name)
+        file_name = "NULL FILENAME";
+    if (!expr_string)
+        expr_string = "NULL EXPR_STRING";
+
+    printf("\nASSERTION FAILED: %s, at FILE=%s, LINE=%d\n", expr_string,
+            file_name, line_number);
+
+#ifdef BH_TEST
+    longjmp(bh_test_jb, 1);
+#endif
+
+    abort();
+}
+
+void bh_debug_internal(const char *file_name, int line_number, const char *fmt,
+        ...)
+{
+#ifndef JEFF_TEST_VERIFIER
+    va_list args;
+
+    va_start(args, fmt);
+    bh_assert(file_name);
+
+    printf("\nDebug info FILE=%s, LINE=%d: ", file_name, line_number);
+    vprintf(fmt, args);
+
+    va_end(args);
+    printf("\n");
+#endif
+}
+

core/shared-lib/platform/darwin/bh_definition.c

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "bh_definition.h"
+#include "bh_platform.h"
+
+int bh_return(int ret)
+{
+    return ret;
+}
+
+#define RSIZE_MAX 0x7FFFFFFF
+int b_memcpy_s(void * s1, unsigned int s1max, const void * s2, unsigned int n)
+{
+    char *dest = (char*) s1;
+    char *src = (char*) s2;
+    if (n == 0) {
+        return 0;
+    }
+
+    if (s1 == NULL || s1max > RSIZE_MAX) {
+        return -1;
+    }
+    if (s2 == NULL || n > s1max) {
+        memset(dest, 0, s1max);
+        return -1;
+    }
+    memcpy(dest, src, n);
+    return 0;
+}
+
+int b_strcat_s(char * s1, size_t s1max, const char * s2)
+{
+    if (NULL
+            == s1|| NULL == s2 || s1max < (strlen(s1) + strlen(s2) + 1) || s1max > RSIZE_MAX) {
+        return -1;
+    }
+
+    strcat(s1, s2);
+
+    return 0;
+}
+
+int b_strcpy_s(char * s1, size_t s1max, const char * s2)
+{
+    if (NULL
+            == s1|| NULL == s2 || s1max < (strlen(s2) + 1) || s1max > RSIZE_MAX) {
+        return -1;
+    }
+
+    strcpy(s1, s2);
+
+    return 0;
+}
+
+int fopen_s(FILE ** pFile, const char *filename, const char *mode)
+{
+    if (NULL == pFile || NULL == filename || NULL == mode) {
+        return -1;
+    }
+
+    *pFile = fopen(filename, mode);
+
+    if (NULL == *pFile)
+        return -1;
+
+    return 0;
+}

core/shared-lib/platform/darwin/bh_platform.c

@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "bh_platform.h"
+
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+char *bh_strdup(const char *s)
+{
+    char *s1 = NULL;
+    if (s && (s1 = bh_malloc(strlen(s) + 1)))
+        memcpy(s1, s, strlen(s) + 1);
+    return s1;
+}
+
+int bh_platform_init()
+{
+    return 0;
+}
+
+char*
+bh_read_file_to_buffer(const char *filename, int *ret_size)
+{
+    char *buffer;
+    int file;
+    int file_size, read_size;
+    struct stat stat_buf;
+
+    if (!filename || !ret_size) {
+        printf("Read file to buffer failed: invalid filename or ret size.\n");
+        return NULL;
+    }
+
+    if ((file = open(filename, O_RDONLY, 0)) == -1) {
+        printf("Read file to buffer failed: open file %s failed.\n",
+               filename);
+        return NULL;
+    }
+
+    if (fstat(file, &stat_buf) != 0) {
+        printf("Read file to buffer failed: fstat file %s failed.\n",
+               filename);
+        close(file);
+        return NULL;
+    }
+
+    file_size = stat_buf.st_size;
+
+    if (!(buffer = bh_malloc(file_size))) {
+        printf("Read file to buffer failed: alloc memory failed.\n");
+        close(file);
+        return NULL;
+    }
+
+    read_size = read(file, buffer, file_size);
+    close(file);
+
+    if (read_size < file_size) {
+        printf("Read file to buffer failed: read file content failed.\n");
+        bh_free(buffer);
+        return NULL;
+    }
+
+    *ret_size = file_size;
+    return buffer;
+}
+

core/shared-lib/platform/darwin/bh_platform.h

@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _BH_PLATFORM_H
+#define _BH_PLATFORM_H
+
+#include "bh_config.h"
+#include "bh_types.h"
+#include "bh_memory.h"
+#include <inttypes.h>
+#include <stdbool.h>
+#include <assert.h>
+#include <time.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <stdarg.h>
+#include <ctype.h>
+#include <pthread.h>
+#include <limits.h>
+#include <semaphore.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef uint64_t uint64;
+typedef int64_t int64;
+
+extern void DEBUGME(void);
+
+#define DIE do{bh_debug("Die here\n\n\n\n\n\n\n\n\n\n\n\n\n\n"); DEBUGME(void); while(1);}while(0)
+
+#define BH_PLATFORM "Darwin"
+
+/* NEED qsort */
+
+#define _STACK_SIZE_ADJUSTMENT (32 * 1024)
+
+/* Stack size of applet threads's native part.  */
+#define BH_APPLET_PRESERVED_STACK_SIZE      (8 * 1024 + _STACK_SIZE_ADJUSTMENT)
+
+/* Default thread priority */
+#define BH_THREAD_DEFAULT_PRIORITY 0
+
+#define BH_ROUTINE_MODIFIER
+
+#define BHT_TIMEDOUT ETIMEDOUT
+
+#define INVALID_THREAD_ID 0xFFffFFff
+
+typedef pthread_t korp_tid;
+typedef pthread_mutex_t korp_mutex;
+typedef sem_t korp_sem;
+typedef pthread_cond_t korp_cond;
+typedef pthread_t korp_thread;
+typedef void* (*thread_start_routine_t)(void*);
+
+#define wa_malloc bh_malloc
+#define wa_free bh_free
+#define wa_strdup bh_strdup
+
+//int snprintf(char *buffer, size_t count, const char *format, ...);
+double fmod(double x, double y);
+float fmodf(float x, float y);
+double sqrt(double x);
+
+#define BH_WAIT_FOREVER 0xFFFFFFFF
+
+#ifndef NULL
+#  define NULL ((void*) 0)
+#endif
+
+/**
+ * Return the offset of the given field in the given type.
+ *
+ * @param Type the type containing the filed
+ * @param field the field in the type
+ *
+ * @return the offset of field in Type
+ */
+#ifndef offsetof
+#define offsetof(Type, field) ((size_t)(&((Type *)0)->field))
+#endif
+
+#define bh_assert assert
+
+int b_memcpy_s(void * s1, unsigned int s1max, const void * s2,
+               unsigned int n);
+int b_strcat_s(char * s1, size_t s1max, const char * s2);
+int b_strcpy_s(char * s1, size_t s1max, const char * s2);
+
+int fopen_s(FILE ** pFile, const char *filename, const char *mode);
+
+char *bh_read_file_to_buffer(const char *filename, int *ret_size);
+
+char *bh_strdup(const char *s);
+
+int bh_platform_init();
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

core/shared-lib/platform/darwin/bh_platform_log.c

@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "bh_platform.h"
+#include <stdio.h>
+
+void bh_log_emit(const char *fmt, va_list ap)
+{
+    vprintf(fmt, ap);
+    fflush(stdout);
+}
+
+int bh_fprintf(FILE *stream, const char *fmt, ...)
+{
+    va_list ap;
+    int ret;
+
+    va_start(ap, fmt);
+    ret = vfprintf(stream ? stream : stdout, fmt, ap);
+    va_end(ap);
+
+    return ret;
+}
+
+int bh_fflush(void *stream)
+{
+    return fflush(stream ? stream : stdout);
+}

core/shared-lib/platform/darwin/bh_thread.c

@@ -0,0 +1,405 @@
+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "bh_thread.h"
+#include "bh_assert.h"
+#include "bh_log.h"
+#include "bh_memory.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/time.h>
+
+static bool is_thread_sys_inited = false;
+
+static korp_mutex thread_list_lock;
+static pthread_key_t thread_local_storage_key[BH_MAX_TLS_NUM];
+
+int _vm_thread_sys_init()
+{
+    unsigned i, j;
+    int ret;
+
+    if (is_thread_sys_inited)
+        return 0;
+
+    for (i = 0; i < BH_MAX_TLS_NUM; i++) {
+        ret = pthread_key_create(&thread_local_storage_key[i], NULL);
+        if (ret)
+            goto fail;
+    }
+
+    ret = vm_mutex_init(&thread_list_lock);
+    if (ret)
+        goto fail;
+
+    is_thread_sys_inited = true;
+    return 0;
+
+    fail: for (j = 0; j < i; j++)
+        pthread_key_delete(thread_local_storage_key[j]);
+    return -1;
+}
+
+void vm_thread_sys_destroy(void)
+{
+    if (is_thread_sys_inited) {
+        unsigned i;
+        for (i = 0; i < BH_MAX_TLS_NUM; i++)
+            pthread_key_delete(thread_local_storage_key[i]);
+        vm_mutex_destroy(&thread_list_lock);
+        is_thread_sys_inited = false;
+    }
+}
+
+typedef struct {
+    thread_start_routine_t start;
+    void* stack;
+    int stack_size;
+    void* arg;
+} thread_wrapper_arg;
+
+static void *vm_thread_wrapper(void *arg)
+{
+    thread_wrapper_arg * targ = arg;
+    LOG_VERBOSE("THREAD CREATE 0x%08x\n", &targ);
+    targ->stack = (void *)((uintptr_t)(&arg) & ~0xfff);
+    _vm_tls_put(1, targ);
+    targ->start(targ->arg);
+    bh_free(targ);
+    _vm_tls_put(1, NULL);
+    return NULL;
+}
+
+int _vm_thread_create_with_prio(korp_tid *tid, thread_start_routine_t start,
+        void *arg, unsigned int stack_size, int prio)
+{
+    pthread_attr_t tattr;
+    thread_wrapper_arg *targ;
+
+    bh_assert(stack_size > 0);
+    bh_assert(tid);
+    bh_assert(start);
+
+    *tid = INVALID_THREAD_ID;
+
+    pthread_attr_init(&tattr);
+    pthread_attr_setdetachstate(&tattr, PTHREAD_CREATE_JOINABLE);
+    if (pthread_attr_setstacksize(&tattr, stack_size) != 0) {
+        bh_debug("Invalid thread stack size %u. Min stack size on Linux = %u",
+                stack_size, PTHREAD_STACK_MIN);
+        pthread_attr_destroy(&tattr);
+        return BHT_ERROR;
+    }
+
+    targ = (thread_wrapper_arg*) bh_malloc(sizeof(*targ));
+    if (!targ) {
+        pthread_attr_destroy(&tattr);
+        return BHT_ERROR;
+    }
+
+    targ->start = start;
+    targ->arg = arg;
+    targ->stack_size = stack_size;
+
+    if (pthread_create(tid, &tattr, vm_thread_wrapper, targ) != 0) {
+        pthread_attr_destroy(&tattr);
+        bh_free(targ);
+        return BHT_ERROR;
+    }
+
+    pthread_attr_destroy(&tattr);
+    return BHT_OK;
+}
+
+int _vm_thread_create(korp_tid *tid, thread_start_routine_t start, void *arg,
+        unsigned int stack_size)
+{
+    return _vm_thread_create_with_prio(tid, start, arg, stack_size,
+                                       BH_THREAD_DEFAULT_PRIORITY);
+}
+
+korp_tid _vm_self_thread()
+{
+    return (korp_tid) pthread_self();
+}
+
+void vm_thread_exit(void * code)
+{
+    bh_free(_vm_tls_get(1));
+    _vm_tls_put(1, NULL);
+    pthread_exit(code);
+}
+
+void *_vm_tls_get(unsigned idx)
+{
+    bh_assert(idx < BH_MAX_TLS_NUM);
+    return pthread_getspecific(thread_local_storage_key[idx]);
+}
+
+int _vm_tls_put(unsigned idx, void * tls)
+{
+    bh_assert(idx < BH_MAX_TLS_NUM);
+    pthread_setspecific(thread_local_storage_key[idx], tls);
+    return BHT_OK;
+}
+
+int _vm_mutex_init(korp_mutex *mutex)
+{
+    return pthread_mutex_init(mutex, NULL) == 0 ? BHT_OK : BHT_ERROR;
+}
+
+int _vm_recursive_mutex_init(korp_mutex *mutex)
+{
+    int ret;
+
+    pthread_mutexattr_t mattr;
+
+    bh_assert(mutex);
+    ret = pthread_mutexattr_init(&mattr);
+    if (ret)
+        return BHT_ERROR;
+
+    pthread_mutexattr_settype(&mattr, PTHREAD_MUTEX_RECURSIVE);
+    ret = pthread_mutex_init(mutex, &mattr);
+    pthread_mutexattr_destroy(&mattr);
+
+    return ret == 0 ? BHT_OK : BHT_ERROR;
+}
+
+int _vm_mutex_destroy(korp_mutex *mutex)
+{
+    int ret;
+
+    bh_assert(mutex);
+    ret = pthread_mutex_destroy(mutex);
+
+    return ret == 0 ? BHT_OK : BHT_ERROR;
+}
+
+/* Returned error (EINVAL, EAGAIN and EDEADLK) from
+ locking the mutex indicates some logic error present in
+ the program somewhere.
+ Don't try to recover error for an existing unknown error.*/
+void vm_mutex_lock(korp_mutex *mutex)
+{
+    int ret;
+
+    bh_assert(mutex);
+    ret = pthread_mutex_lock(mutex);
+    if (0 != ret) {
+        printf("vm mutex lock failed (ret=%d)!\n", ret);
+        exit(-1);
+    }
+}
+
+int vm_mutex_trylock(korp_mutex *mutex)
+{
+    int ret;
+
+    bh_assert(mutex);
+    ret = pthread_mutex_trylock(mutex);
+
+    return ret == 0 ? BHT_OK : BHT_ERROR;
+}
+
+/* Returned error (EINVAL, EAGAIN and EPERM) from
+ unlocking the mutex indicates some logic error present
+ in the program somewhere.
+ Don't try to recover error for an existing unknown error.*/
+void vm_mutex_unlock(korp_mutex *mutex)
+{
+    int ret;
+
+    bh_assert(mutex);
+    ret = pthread_mutex_unlock(mutex);
+    if (0 != ret) {
+        printf("vm mutex unlock failed (ret=%d)!\n", ret);
+        exit(-1);
+    }
+}
+
+int _vm_sem_init(korp_sem* sem, unsigned int c)
+{
+    int ret;
+
+    bh_assert(sem);
+    ret = sem_init(sem, 0, c);
+
+    return ret == 0 ? BHT_OK : BHT_ERROR;
+}
+
+int _vm_sem_destroy(korp_sem *sem)
+{
+    int ret;
+
+    bh_assert(sem);
+    ret = sem_destroy(sem);
+
+    return ret == 0 ? BHT_OK : BHT_ERROR;
+}
+
+int _vm_sem_wait(korp_sem *sem)
+{
+    int ret;
+
+    bh_assert(sem);
+
+    ret = sem_wait(sem);
+
+    return ret == 0 ? BHT_OK : BHT_ERROR;
+}
+
+/*int _vm_sem_reltimedwait(korp_sem *sem, int mills)
+{
+    int ret = BHT_OK;
+
+    struct timespec timeout;
+    const int mills_per_sec = 1000;
+    const int mills_to_nsec = 1E6;
+
+    bh_assert(sem);
+
+    if (mills == BHT_WAIT_FOREVER) {
+        ret = sem_wait(sem);
+    } else {
+
+        timeout.tv_sec = mills / mills_per_sec;
+        timeout.tv_nsec = (mills % mills_per_sec) * mills_to_nsec;
+        timeout.tv_sec += time(NULL);
+
+        ret = sem_timedwait(sem, &timeout);
+    }
+
+    if (ret != BHT_OK) {
+        if (errno == BHT_TIMEDOUT) {
+            ret = BHT_TIMEDOUT;
+            errno = 0;
+        } else {
+            bh_debug("Faliure happens when timed wait is called");
+            bh_assert(0);
+        }
+    }
+
+    return ret;
+}
+*/
+
+int _vm_sem_post(korp_sem *sem)
+{
+    bh_assert(sem);
+
+    return sem_post(sem) == 0 ? BHT_OK : BHT_ERROR;
+}
+
+int _vm_cond_init(korp_cond *cond)
+{
+    bh_assert(cond);
+
+    if (pthread_cond_init(cond, NULL) != BHT_OK)
+        return BHT_ERROR;
+
+    return BHT_OK;
+}
+
+int _vm_cond_destroy(korp_cond *cond)
+{
+    bh_assert(cond);
+
+    if (pthread_cond_destroy(cond) != BHT_OK)
+        return BHT_ERROR;
+
+    return BHT_OK;
+}
+
+int _vm_cond_wait(korp_cond *cond, korp_mutex *mutex)
+{
+    bh_assert(cond);
+    bh_assert(mutex);
+
+    if (pthread_cond_wait(cond, mutex) != BHT_OK)
+        return BHT_ERROR;
+
+    return BHT_OK;
+}
+
+static void msec_nsec_to_abstime(struct timespec *ts, int64 msec, int32 nsec)
+{
+    struct timeval tv;
+
+    gettimeofday(&tv, NULL);
+
+    ts->tv_sec = tv.tv_sec + msec / 1000;
+    ts->tv_nsec = tv.tv_usec * 1000 + (msec % 1000) * 1000000 + nsec;
+
+    if (ts->tv_nsec >= 1000000000L) {
+        ts->tv_sec++;
+        ts->tv_nsec -= 1000000000L;
+    }
+}
+
+int _vm_cond_reltimedwait(korp_cond *cond, korp_mutex *mutex, int mills)
+{
+    int ret;
+    struct timespec abstime;
+
+    if (mills == BHT_WAIT_FOREVER)
+        ret = pthread_cond_wait(cond, mutex);
+    else {
+        msec_nsec_to_abstime(&abstime, mills, 0);
+        ret = pthread_cond_timedwait(cond, mutex, &abstime);
+    }
+
+    if (ret != BHT_OK && ret != BHT_TIMEDOUT)
+        return BHT_ERROR;
+
+    return BHT_OK;
+}
+
+int _vm_cond_signal(korp_cond *cond)
+{
+    bh_assert(cond);
+
+    if (pthread_cond_signal(cond) != BHT_OK)
+        return BHT_ERROR;
+
+    return BHT_OK;
+}
+
+int _vm_cond_broadcast(korp_cond *cond)
+{
+    bh_assert(cond);
+
+    if (pthread_cond_broadcast(cond) != BHT_OK)
+        return BHT_ERROR;
+
+    return BHT_OK;
+}
+
+int _vm_thread_cancel(korp_tid thread)
+{
+    return pthread_cancel(thread);
+}
+
+int _vm_thread_join(korp_tid thread, void **value_ptr, int mills)
+{
+    return pthread_join(thread, value_ptr);
+}
+
+int _vm_thread_detach(korp_tid thread)
+{
+    return pthread_detach(thread);
+}
+

core/shared-lib/platform/darwin/bh_time.c

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "bh_time.h"
+
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/timeb.h>
+#include <time.h>
+
+/*
+ * This function returns milliseconds per tick.
+ * @return milliseconds per tick.
+ */
+uint64 _bh_time_get_tick_millisecond()
+{
+    return sysconf(_SC_CLK_TCK);
+}
+
+/*
+ * This function returns milliseconds after boot.
+ * @return milliseconds after boot.
+ */
+uint64 _bh_time_get_boot_millisecond()
+{
+    struct timespec ts;
+    if (clock_gettime(CLOCK_MONOTONIC, &ts) != 0) {
+        return 0;
+    }
+
+    return ((uint64) ts.tv_sec) * 1000 + ts.tv_nsec / (1000 * 1000);
+}
+
+uint32 bh_get_tick_sec()
+{
+    return _bh_time_get_boot_millisecond() / 1000;
+}
+
+/*
+ * This function returns GMT time milliseconds since from 1970.1.1, AKA UNIX time.
+ * @return milliseconds since from 1970.1.1.
+ */
+uint64 _bh_time_get_millisecond_from_1970()
+{
+    struct timeb tp;
+    ftime(&tp);
+
+    return ((uint64) tp.time) * 1000 + tp.millitm
+            - (tp.dstflag == 0 ? 0 : 60 * 60 * 1000) + tp.timezone * 60 * 1000;
+}
+
+size_t _bh_time_strftime(char *s, size_t max, const char *format, int64 time)
+{
+    time_t time_sec = time / 1000;
+    struct timeb tp;
+    struct tm *ltp;
+
+    ftime(&tp);
+    time_sec -= tp.timezone * 60;
+
+    ltp = localtime(&time_sec);
+    if (ltp == NULL) {
+        return 0;
+    }
+    return strftime(s, max, format, ltp);
+}
+

core/shared-lib/platform/darwin/shared_platform.cmake

@@ -0,0 +1,24 @@
+# Copyright (C) 2019 Intel Corporation.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set (PLATFORM_SHARED_DIR ${CMAKE_CURRENT_LIST_DIR})
+
+include_directories(${PLATFORM_SHARED_DIR})
+include_directories(${PLATFORM_SHARED_DIR}/../include)
+
+
+file (GLOB_RECURSE source_all ${PLATFORM_SHARED_DIR}/*.c)
+
+set (PLATFORM_SHARED_SOURCE ${source_all})
+