1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
/* Copyright JS Foundation and other contributors, http://js.foundation
*
* 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 <stdlib.h>
#include <string.h>
#include "jerryscript.h"
#include "jerryscript-port.h"
/**
* Maximum size of source code / snapshots buffer
*/
#define JERRY_BUFFER_SIZE (1048576)
/**
* Standalone Jerry exit codes
*/
#define JERRY_STANDALONE_EXIT_CODE_OK (0)
#define JERRY_STANDALONE_EXIT_CODE_FAIL (1)
static uint8_t buffer[ JERRY_BUFFER_SIZE ];
static const uint8_t *
read_file (const char *file_name,
size_t *out_size_p)
{
FILE *file = fopen (file_name, "rb");
if (file == NULL)
{
jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: failed to open file: %s\n", file_name);
return NULL;
}
size_t bytes_read = fread (buffer, 1u, sizeof (buffer), file);
if (!bytes_read)
{
jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: failed to read file: %s\n", file_name);
fclose (file);
return NULL;
}
fclose (file);
*out_size_p = bytes_read;
return (const uint8_t *) buffer;
} /* read_file */
static void
print_help (char *name)
{
printf ("Usage: %s [OPTION]... [FILE]...\n"
"\n"
"Options:\n"
" -h, --help\n"
"\n",
name);
} /* print_help */
/* Global "argc" and "argv" used to avoid argument passing via stack. */
static int argc;
static char **argv;
static JERRY_ATTR_NOINLINE int
run (void)
{
jerry_init (JERRY_INIT_EMPTY);
jerry_value_t ret_value = jerry_create_undefined ();
for (int i = 1; i < argc; i++)
{
const char *file_name = argv[i];
size_t source_size;
const jerry_char_t *source_p = read_file (file_name, &source_size);
if (source_p == NULL)
{
ret_value = jerry_create_error (JERRY_ERROR_COMMON, (jerry_char_t *) "");
break;
}
else
{
ret_value = jerry_parse (source_p, source_size, NULL);
if (!jerry_value_is_error (ret_value))
{
jerry_value_t func_val = ret_value;
ret_value = jerry_run (func_val);
jerry_release_value (func_val);
}
}
if (jerry_value_is_error (ret_value))
{
break;
}
jerry_release_value (ret_value);
ret_value = jerry_create_undefined ();
}
int ret_code = !jerry_value_is_error (ret_value) ? JERRY_STANDALONE_EXIT_CODE_OK : JERRY_STANDALONE_EXIT_CODE_FAIL;
jerry_release_value (ret_value);
jerry_cleanup ();
return ret_code;
} /* run */
#if defined (JERRY_TEST_STACK_MEASURE) && (JERRY_TEST_STACK_MEASURE)
/**
* How this stack measuring works:
*
* 1) Get the current stack pointer before doing the test execution.
* This will be the "Stack bottom".
* 2) Fill the stack towards lower addresses with a placeholder 32 bit value.
* A "STACK_MEASURE_RANGE" big area will be filled with the value starting
* from "Stack bottom".
* The "Stack bottom" + "STACK_MEASURE_RANGE" will be the "Stack top".
* 3) Run the tests.
* 4) Check the stack backwards from "Stack top" to see where the 32 bit placeholder
* value is not present. The point where the 32 bit value is not found is
* considered to be the "Stack max". The "Stack bottom" - "Stack max" substraction
* will give the stack usage in bytes.
*
*
* Based on this the expected stack layout is:
* The stack is expected to "grow" towards lower address.
*
* |-------|
* | | <- low address - "Stack top"
* |-------|
* | |
* |-------|
* ....
* |-------|
* | | <- "Stack max"
* |-------|
* ....
* |-------|
* | | <- high address - "Stack bottom"
* |-------|
*
*/
#if !(defined (__linux__) && __linux__)
#error "Unsupported stack measurement platform!"
#endif /* !(defined ( __linux__) && __linux__) */
#if defined (__x86_64__)
#define STACK_SAVE(TARGET) { __asm volatile ("mov %%rsp, %0" : "=m" (TARGET)); }
#elif defined (__i386__)
#define STACK_SAVE(TARGET) { __asm volatile ("mov %%esp, %0" : "=m" (TARGET)); }
#elif defined (__arm__)
#define STACK_SAVE(TARGET) { __asm volatile ("mov %0, sp" : "=r" (TARGET)); }
#else /* !defined (__x86_64__) && !defined (__i386__) && !defined (__arm__) */
#error "Unsupported stack measurement target!"
#endif /* !defined (__x86_64__) && !defined (__i386__) && !defined (__arm__) */
static void *g_stack_bottom = 0x0;
#define STACK_MEASURE_RANGE ((2 * 1024 * 1024))
#define STACK_PATTERN (0xDEADBEEF)
#define STACK_INIT(TARGET, SIZE) do \
{ \
for (size_t idx = 0; idx < (SIZE / sizeof (uint32_t)); idx++) \
{ \
((uint32_t*)(TARGET))[idx] = STACK_PATTERN; \
} \
} while (0)
#define STACK_USAGE(TARGET, SIZE) stack_usage (TARGET, SIZE)
#define STACK_TOP_PTR(TARGET, SIZE) (uint32_t *) (((uint8_t *) TARGET) - SIZE)
static void
stack_usage (uint32_t *stack_top_p, size_t length_in_bytes)
{
uint32_t *stack_bottom_p = stack_top_p + (length_in_bytes / sizeof (uint32_t));
uint32_t *stack_p = stack_top_p;
while (stack_p < stack_bottom_p)
{
if (*stack_p != STACK_PATTERN)
{
break;
}
stack_p++;
}
jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Used stack: %d\n", (int) ((uint8_t *) stack_bottom_p - (uint8_t *) stack_p));
} /* stack_usage */
#else /* (JERRY_TEST_STACK_MEASURE) && (JERRY_TEST_STACK_MEASURE) */
#define STACK_SAVE(TARGET)
#define STACK_INIT(TARGET, SIZE)
#define STACK_USAGE(TARGET, SIZE)
#endif /* #if defined (JERRY_TEST_STACK_MEASURE) && (JERRY_TEST_STACK_MEASURE) */
int main (int main_argc,
char **main_argv)
{
union
{
double d;
unsigned u;
} now = { .d = jerry_port_get_current_time () };
srand (now.u);
argc = main_argc;
argv = main_argv;
if (argc <= 1 || (argc == 2 && (!strcmp ("-h", argv[1]) || !strcmp ("--help", argv[1]))))
{
print_help (argv[0]);
return JERRY_STANDALONE_EXIT_CODE_OK;
}
STACK_SAVE (g_stack_bottom);
STACK_INIT (STACK_TOP_PTR (g_stack_bottom, STACK_MEASURE_RANGE), STACK_MEASURE_RANGE);
int result = run ();
STACK_USAGE (STACK_TOP_PTR (g_stack_bottom, STACK_MEASURE_RANGE), STACK_MEASURE_RANGE);
if (result == JERRY_STANDALONE_EXIT_CODE_FAIL)
{
jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Unhandled exception: Script Error!\n");
}
return result;
} /* main */
|
