Import box initialization code from uvisor repository

Author: meriac

features/FEATURE_UVISOR/includes/uvisor/api/inc/box_config.h

@@ -45,6 +45,8 @@ UVISOR_EXTERN const uint32_t __uvisor_mode;
         sizeof(RtxBoxIndex), \
         0, \
         0, \
+        0, \
+        0, \
         NULL, \
         acl_list, \
         acl_list_count \
@@ -76,6 +78,8 @@ UVISOR_EXTERN const uint32_t __uvisor_mode;
         sizeof(RtxBoxIndex), \
         context_size, \
         __uvisor_box_heapsize, \
+        __uvisor_box_main_function, \
+        __uvisor_box_main_priority, \
         __uvisor_box_namespace, \
         acl_list, \
         acl_list_count \
@@ -116,6 +120,13 @@ UVISOR_EXTERN const uint32_t __uvisor_mode;
 #define UVISOR_BOX_NAMESPACE(box_namespace) \
     static const char *const __uvisor_box_namespace = box_namespace
 
+/* Use this macro before UVISOR_BOX_CONFIG to define the function the main
+ * thread of your box will use for its body. If you don't want a main thread,
+ * too bad: you have to have one. */
+#define UVISOR_BOX_MAIN(function, priority) \
+    static void (*const __uvisor_box_main_function)(void const *) = (function); \
+    static const int32_t __uvisor_box_main_priority = (priority);
+
 #define UVISOR_BOX_HEAPSIZE(heap_size) \
     static const uint32_t __uvisor_box_heapsize = heap_size;
 

features/FEATURE_UVISOR/includes/uvisor/api/inc/svc_exports.h

@@ -116,6 +116,7 @@
 /* SVC immediate values for hardcoded table (call from unprivileged) */
 #define UVISOR_SVC_ID_UNVIC_OUT        UVISOR_SVC_FIXED_TABLE(0, 0)
 #define UVISOR_SVC_ID_REGISTER_GATEWAY UVISOR_SVC_FIXED_TABLE(3, 0)
+#define UVISOR_SVC_ID_BOX_MAIN_NEXT    UVISOR_SVC_FIXED_TABLE(5, 0)
 
 /* SVC immediate values for hardcoded table (call from privileged) */
 #define UVISOR_SVC_ID_UNVIC_IN         UVISOR_SVC_FIXED_TABLE(0, 0)

features/FEATURE_UVISOR/includes/uvisor/api/inc/vmpu_exports.h

@@ -158,6 +158,9 @@ typedef struct {
     /* Contains user provided size of box heap without guards of buffers. */
     uint32_t heap_size;
 
+    void (*main_function)(void const *argument);
+    int32_t main_priority;
+
     const char * box_namespace;
     const UvisorBoxAclItem * const acl_list;
     uint32_t acl_count;

features/FEATURE_UVISOR/source/rtx/box_main.c

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2016, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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 "uvisor-lib/uvisor-lib.h"
+#include "mbed_interface.h"
+#include "cmsis_os.h"
+#include <stdint.h>
+#include <stdlib.h>
+
+/* This function is called by uVisor in unprivileged mode to create box main
+ * threads. */
+void __uvisor_lib_box_main_handler(
+    void (*function)(void const *),
+    int32_t priority,
+    uint32_t stack_pointer,
+    uint32_t stack_size)
+{
+    osThreadId thread_id;
+    osThreadDef_t thread_def;
+    thread_def.pthread = function;
+    thread_def.tpriority = priority;
+    thread_def.stacksize = stack_size;
+    thread_def.stack_pointer = malloc(stack_size); /* XXX */
+
+    thread_id = osThreadCreate(&thread_def, NULL);
+
+    if (thread_id == NULL) {
+        mbed_die();
+    }
+}