Implement post-MVP features and native stack overflow check (#243)

Implement native thread stack overflow check
Implement post-MVP: Non-trapping float-to-int conversions
Implement post-MVP: Sign-extension operators
Enhance WASM loader checks

core/shared/platform/alios/alios_thread.c

@@ -339,3 +339,9 @@ os_cond_signal(korp_cond *cond)
     return BHT_OK;
 }
 
+uint8 *os_thread_get_stack_boundary()
+{
+    /* TODO: get alios stack boundary */
+    return NULL;
+}
+

core/shared/platform/android/platform_internal.h

@@ -40,7 +40,7 @@ extern "C" {
 #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)
+#define BH_APPLET_PRESERVED_STACK_SIZE (32 * 1024 + _STACK_SIZE_ADJUSTMENT)
 
 /* Default thread priority */
 #define BH_THREAD_DEFAULT_PRIORITY 0

core/shared/platform/common/posix/posix_thread.c

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  */
 
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
 #include "platform_api_vmcore.h"
 #include "platform_api_extension.h"
 
@@ -218,3 +221,20 @@ int os_thread_join(korp_tid thread, void **value_ptr)
     return pthread_join(thread, value_ptr);
 }
 
+uint8 *os_thread_get_stack_boundary()
+{
+    pthread_attr_t attr;
+    void *addr = NULL;
+    size_t size;
+
+    if (pthread_getattr_np(pthread_self(), &attr) == 0) {
+        pthread_attr_getstack(&attr, &addr, &size);
+        pthread_attr_destroy (&attr);
+    }
+
+    if (addr)
+        return (uint8*)addr + _STACK_SIZE_ADJUSTMENT;
+    else
+        return NULL;
+}
+

core/shared/platform/darwin/platform_internal.h

@@ -40,7 +40,7 @@ extern "C" {
 #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)
+#define BH_APPLET_PRESERVED_STACK_SIZE (32 * 1024 + _STACK_SIZE_ADJUSTMENT)
 
 /* Default thread priority */
 #define BH_THREAD_DEFAULT_PRIORITY 0

core/shared/platform/include/platform_api_vmcore.h

@@ -65,6 +65,13 @@ uint64 os_time_get_boot_microsecond(void);
  */
 korp_tid os_self_thread(void);
 
+/**
+ * Get current thread's stack boundary address, used for runtime
+ * to check the native stack overflow. Return NULL if it is not
+ * easy to implement, but may have potential issue.
+ */
+uint8 *os_thread_get_stack_boundary(void);
+
 /**
  ************** mutext APIs ***********
  *  vmcore:  Not required until pthread is supported by runtime

core/shared/platform/linux-sgx/sgx_thread.c

@@ -47,3 +47,9 @@ int os_cond_destroy(korp_cond *cond)
     return BHT_OK;
 }
 
+uint8 *os_thread_get_stack_boundary()
+{
+    /* TODO: get sgx stack boundary */
+    return NULL;
+}
+

core/shared/platform/linux/platform_internal.h

@@ -40,7 +40,7 @@ extern "C" {
 #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)
+#define BH_APPLET_PRESERVED_STACK_SIZE (32 * 1024 + _STACK_SIZE_ADJUSTMENT)
 
 /* Default thread priority */
 #define BH_THREAD_DEFAULT_PRIORITY 0

core/shared/platform/vxworks/platform_internal.h

@@ -39,7 +39,7 @@ extern "C" {
 #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)
+#define BH_APPLET_PRESERVED_STACK_SIZE (32 * 1024 + _STACK_SIZE_ADJUSTMENT)
 
 /* Default thread priority */
 #define BH_THREAD_DEFAULT_PRIORITY 0

core/shared/platform/zephyr/zephyr_thread.c

@@ -444,3 +444,13 @@ int os_cond_signal(korp_cond *cond)
     return BHT_OK;
 }
 
+uint8 *os_thread_get_stack_boundary()
+{
+#if defined(CONFIG_THREAD_STACK_INFO)
+    korp_tid thread = k_current_get();
+    return (uint8*)thread->stack_info.start;
+#else
+    return NULL;
+#endif
+}
+