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Support static snapshots. (#2239)

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Unlike normal snapshots, no part of a static snapshot is loaded into
the RAM when executed from ROM. Static snapshots rely heavily on
external magic strings.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2018-03-19 23:46:52 +01:00
committed by yichoi
parent dde09cc4b6
commit bb84466fcf
17 changed files with 850 additions and 166 deletions
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jerry-main/main-unix-snapshot.c
+58 -34
View File
@@ -126,10 +126,11 @@ read_file (uint8_t *input_pos_p, /**< next position in the input buffer */
typedef enum
{
OPT_GENERATE_HELP,
OPT_GENERATE_STATIC,
OPT_GENERATE_CONTEXT,
OPT_GENERATE_SHOW_OP,
OPT_GENERATE_LITERAL_LIST,
OPT_GENERATE_LITERAL_C,
OPT_GENERATE_SHOW_OP,
OPT_GENERATE_OUT,
} generate_opt_id_t;
@@ -140,8 +141,8 @@ static const cli_opt_t generate_opts[] =
{
CLI_OPT_DEF (.id = OPT_GENERATE_HELP, .opt = "h", .longopt = "help",
.help = "print this help and exit"),
CLI_OPT_DEF (.id = OPT_GENERATE_SHOW_OP, .longopt = "show-opcodes",
.help = "print generated opcodes"),
CLI_OPT_DEF (.id = OPT_GENERATE_STATIC, .opt = "s", .longopt = "static",
.help = "generate static snapshot"),
CLI_OPT_DEF (.id = OPT_GENERATE_CONTEXT, .opt = "c", .longopt = "context",
.meta = "MODE",
.help = "specify the execution context of the snapshot: "
@@ -152,6 +153,8 @@ static const cli_opt_t generate_opts[] =
CLI_OPT_DEF (.id = OPT_GENERATE_LITERAL_C, .longopt = "save-literals-c-format",
.meta = "FILE",
.help = "export literals found in parsed JS input (in C source format)"),
CLI_OPT_DEF (.id = OPT_GENERATE_SHOW_OP, .longopt = "show-opcodes",
.help = "print generated opcodes"),
CLI_OPT_DEF (.id = OPT_GENERATE_OUT, .opt = "o", .meta="FILE",
.help = "specify output file name (default: js.snapshot)"),
CLI_OPT_DEF (.id = CLI_OPT_DEFAULT, .meta = "FILE",
@@ -178,6 +181,7 @@ process_generate (cli_state_t *cli_state_p, /**< cli state */
uint8_t *source_p = input_buffer;
size_t source_length = 0;
const char *save_literals_file_name_p = NULL;
bool static_snapshot = false;
cli_change_opts (cli_state_p, generate_opts);
@@ -190,31 +194,9 @@ process_generate (cli_state_t *cli_state_p, /**< cli state */
cli_help (prog_name_p, "generate", generate_opts);
return JERRY_STANDALONE_EXIT_CODE_OK;
}
case OPT_GENERATE_OUT:
case OPT_GENERATE_STATIC:
{
output_file_name_p = cli_consume_string (cli_state_p);
break;
}
case OPT_GENERATE_LITERAL_LIST:
case OPT_GENERATE_LITERAL_C:
{
if (save_literals_file_name_p != NULL)
{
jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: literal file name already specified");
return JERRY_STANDALONE_EXIT_CODE_FAIL;
}
is_save_literals_mode_in_c_format = (id == OPT_GENERATE_LITERAL_C);
save_literals_file_name_p = cli_consume_string (cli_state_p);
break;
}
case OPT_GENERATE_SHOW_OP:
{
if (check_feature (JERRY_FEATURE_PARSER_DUMP, cli_state_p->arg))
{
jerry_port_default_set_log_level (JERRY_LOG_LEVEL_DEBUG);
flags |= JERRY_INIT_SHOW_OPCODES;
}
static_snapshot = true;
break;
}
case OPT_GENERATE_CONTEXT:
@@ -241,6 +223,33 @@ process_generate (cli_state_t *cli_state_p, /**< cli state */
}
break;
}
case OPT_GENERATE_LITERAL_LIST:
case OPT_GENERATE_LITERAL_C:
{
if (save_literals_file_name_p != NULL)
{
jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: literal file name already specified");
return JERRY_STANDALONE_EXIT_CODE_FAIL;
}
is_save_literals_mode_in_c_format = (id == OPT_GENERATE_LITERAL_C);
save_literals_file_name_p = cli_consume_string (cli_state_p);
break;
}
case OPT_GENERATE_SHOW_OP:
{
if (check_feature (JERRY_FEATURE_PARSER_DUMP, cli_state_p->arg))
{
jerry_port_default_set_log_level (JERRY_LOG_LEVEL_DEBUG);
flags |= JERRY_INIT_SHOW_OPCODES;
}
break;
}
case OPT_GENERATE_OUT:
{
output_file_name_p = cli_consume_string (cli_state_p);
break;
}
case CLI_OPT_DEFAULT:
{
const char *file_name_p = cli_consume_string (cli_state_p);
@@ -274,7 +283,7 @@ process_generate (cli_state_t *cli_state_p, /**< cli state */
if (number_of_files != 1)
{
jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: No input file specified!\n");
jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: Exactly one input file must be specified\n");
return JERRY_STANDALONE_EXIT_CODE_FAIL;
}
@@ -286,12 +295,27 @@ process_generate (cli_state_t *cli_state_p, /**< cli state */
return JERRY_STANDALONE_EXIT_CODE_FAIL;
}
size_t snapshot_size = jerry_parse_and_save_snapshot ((jerry_char_t *) source_p,
source_length,
is_snapshot_mode_for_global,
false,
output_buffer,
sizeof (output_buffer) / sizeof (uint32_t));
size_t snapshot_size;
if (static_snapshot)
{
snapshot_size = jerry_parse_and_save_static_snapshot ((jerry_char_t *) source_p,
source_length,
is_snapshot_mode_for_global,
false,
output_buffer,
sizeof (output_buffer) / sizeof (uint32_t));
}
else
{
snapshot_size = jerry_parse_and_save_snapshot ((jerry_char_t *) source_p,
source_length,
is_snapshot_mode_for_global,
false,
output_buffer,
sizeof (output_buffer) / sizeof (uint32_t));
}
if (snapshot_size == 0)
{
jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Error: Generating snapshot failed!\n");