• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /* Copyright JS Foundation and other contributors, http://js.foundation
2  *
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #include <stdio.h>
17 #include <stdint.h>
18 #include <string.h>
19 
20 /* Infra */
21 #include "infra/bsp.h"
22 #include "infra/reboot.h"
23 #include "infra/log.h"
24 #include "infra/time.h"
25 #include "infra/system_events.h"
26 #include "infra/tcmd/handler.h"
27 
28 #include "cfw/cfw.h"
29 /* Watchdog helper */
30 #include "infra/wdt_helper.h"
31 
32 #include "jerryscript.h"
33 #include "jerryscript-port.h"
34 #include "string.h"
35 
36 #include "zephyr.h"
37 #include "microkernel/task.h"
38 #include "os/os.h"
39 #include "misc/printk.h"
40 
41 static T_QUEUE queue;
42 
43 jerry_value_t print_function;
44 
jerry_resolve_error(jerry_value_t ret_value)45 void jerry_resolve_error (jerry_value_t ret_value)
46 {
47   if (jerry_value_is_error (ret_value))
48   {
49     ret_value = jerry_get_value_from_error (ret_value, true);
50     jerry_value_t err_str_val = jerry_value_to_string (ret_value);
51     jerry_size_t err_str_size = jerry_get_utf8_string_size (err_str_val);
52     jerry_char_t *err_str_buf = (jerry_char_t *) balloc (err_str_size, NULL);
53     jerry_size_t sz = jerry_string_to_utf8_char_buffer (err_str_val, err_str_buf, err_str_size);
54     err_str_buf[sz] = 0;
55     printk ("Script Error: unhandled exception: %s\n", err_str_buf);
56     bfree(err_str_buf);
57     jerry_release_value (err_str_val);
58   }
59 }
60 
help()61 void help ()
62 {
63   printk ("Usage:\n");
64   printk ("js e 'JavaScript Command'\n");
65   printk ("eg. js e print ('Hello World');\n");
66 }
67 
eval_jerry_script(int argc,char * argv[],struct tcmd_handler_ctx * ctx)68 void eval_jerry_script (int argc, char *argv[], struct tcmd_handler_ctx *ctx)
69 {
70   if (argc < 3)
71   {
72     TCMD_RSP_ERROR (ctx, NULL);
73     help ();
74     return;
75   }
76   else
77   {
78     OS_ERR_TYPE err;
79     size_t str_total_length = 0;
80     size_t *str_lens = (size_t *) balloc ((argc - 2) * sizeof(size_t), &err);
81     if (str_lens == NULL || err != E_OS_OK)
82     {
83       printk ("%s: allocate memory failed!", __func__);
84       TCMD_RSP_ERROR (ctx, NULL);
85       return;
86     }
87     for (int i = 2; i < argc; ++i)
88     {
89       str_lens[i - 2] = strlen (argv[i]);
90       str_total_length += str_lens[i - 2] + 1;
91     }
92     err = E_OS_OK;
93     char *buffer = (char *) balloc (str_total_length, &err);
94     if (buffer == NULL || err != E_OS_OK)
95     {
96       printk ("%s: allocate memory failed!", __func__);
97       TCMD_RSP_ERROR (ctx, NULL);
98       return;
99     }
100 
101     char *p = buffer;
102     for (int i = 2; i < argc; ++i)
103     {
104       for (int j =0; j < str_lens[i - 2]; ++j)
105       {
106         *p = argv[i][j];
107         ++p;
108       }
109       *p = ' ';
110       ++p;
111     }
112     *p = '\0';
113 
114     jerry_value_t eval_ret = jerry_eval (buffer, str_total_length - 1, JERRY_PARSE_NO_OPTS);
115 
116     if (jerry_value_is_error (eval_ret))
117     {
118       jerry_resolve_error (eval_ret);
119       TCMD_RSP_ERROR (ctx, NULL);
120     }
121     else
122     {
123       jerry_value_t args[] = {eval_ret};
124       jerry_value_t ret_val_print = jerry_call_function (print_function,
125                                                          jerry_create_undefined (),
126                                                          args,
127                                                          1);
128       jerry_release_value (ret_val_print);
129       TCMD_RSP_FINAL (ctx, NULL);
130     }
131     jerry_release_value (eval_ret);
132     bfree (buffer);
133     bfree (str_lens);
134   }
135 }
136 
jerry_start()137 void jerry_start ()
138 {
139   union { double d; unsigned u; } now = { .d = jerry_port_get_current_time () };
140   srand (now.u);
141   jerry_init (JERRY_INIT_EMPTY);
142   jerry_value_t global_obj_val = jerry_get_global_object ();
143   jerry_value_t print_func_name_val = jerry_create_string ((jerry_char_t *) "print");
144   print_function = jerry_get_property (global_obj_val, print_func_name_val);
145   jerry_release_value (print_func_name_val);
146   jerry_release_value (global_obj_val);
147 }
148 
149 /* Application main entry point */
main_task(void * param)150 void main_task (void *param)
151 {
152   /* Init BSP (also init BSP on ARC core) */
153   queue = bsp_init ();
154   /* start Quark watchdog */
155   wdt_start (WDT_MAX_TIMEOUT_MS);
156   /* Init the CFW */
157   cfw_init (queue);
158   jerry_start ();
159   /* Loop to process message queue */
160   while (1)
161   {
162     OS_ERR_TYPE err = E_OS_OK;
163     /* Process message with a given timeout */
164     queue_process_message_wait (queue, 5000, &err);
165     /* Acknowledge the system watchdog to prevent panic and reset */
166     wdt_keepalive ();
167   }
168 }
169 
170 DECLARE_TEST_COMMAND (js, e, eval_jerry_script);
171