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Add recursion limit for VM (#2737)

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This patch adds posibility to supervise the VM call stack to avoid aborts/crashes due to the recursion calls.

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
This commit is contained in:
Robert Fancsik
2019-02-01 15:32:26 +01:00
committed by László Langó
parent 5c1a4f18ea
commit 6b9c924d08
7 changed files with 86 additions and 7 deletions
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tools/build.py
+8
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@@ -128,6 +128,8 @@ def get_arguments():
help=devhelp('enable regexp strict mode (%(choices)s)'))
coregrp.add_argument('--regexp-recursion-limit', metavar='N', type=int,
help='regexp recursion depth limit')
coregrp.add_argument('--vm-recursion-limit', metavar='N', type=int,
help='VM recursion depth limit')
coregrp.add_argument('--show-opcodes', metavar='X', choices=['ON', 'OFF'], type=str.upper,
help=devhelp('enable parser byte-code dumps (%(choices)s)'))
coregrp.add_argument('--show-regexp-opcodes', metavar='X', choices=['ON', 'OFF'], type=str.upper,
@@ -152,6 +154,11 @@ def get_arguments():
parser.print_help()
sys.exit(0)
if arguments.vm_recursion_limit:
if arguments.vm_recursion_limit < 0:
print ('Configuration error: VM recursion limit must be greater or equal than 0')
sys.exit(1)
return arguments
def generate_build_options(arguments):
@@ -197,6 +204,7 @@ def generate_build_options(arguments):
build_options_append('FEATURE_PROFILE', arguments.profile)
build_options_append('FEATURE_REGEXP_STRICT_MODE', arguments.regexp_strict_mode)
build_options_append('REGEXP_RECURSION_LIMIT', arguments.regexp_recursion_limit)
build_options_append('VM_RECURSION_LIMIT', arguments.vm_recursion_limit)
build_options_append('FEATURE_PARSER_DUMP', arguments.show_opcodes)
build_options_append('FEATURE_REGEXP_DUMP', arguments.show_regexp_opcodes)
build_options_append('FEATURE_SNAPSHOT_EXEC', arguments.snapshot_exec)