Support multiple primary functions in a single snapshot. (#1797)

This patch adds an extension to snapshots which allows storing
multiple position independent primary functions in a single
snapshot data. A new application called jerry-snapshot is
added to the project to manage snapshots. Currently the only
option is merging snapshots.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

tools/build.py

@@ -74,6 +74,8 @@ def get_arguments():
                         help='build jerry command line tool (%(choices)s; default: %(default)s)')
     parser.add_argument('--jerry-cmdline-minimal', metavar='X', choices=['ON', 'OFF'], default='OFF', type=str.upper,
                         help='build minimal version of the jerry command line tool (%(choices)s; default: %(default)s)')
+    parser.add_argument('--jerry-cmdline-snapshot', metavar='X', choices=['ON', 'OFF'], default='OFF', type=str.upper,
+                        help='build snapshot command line tool (%(choices)s; default: %(default)s)')
     parser.add_argument('--jerry-debugger', metavar='X', choices=['ON', 'OFF'], default='OFF', type=str.upper,
                         help='enable the jerry debugger (%(choices)s; default: %(default)s)')
     parser.add_argument('--jerry-ext', metavar='X', choices=['ON', 'OFF'], default='ON', type=str.upper,
@@ -150,6 +152,7 @@ def generate_build_options(arguments):
     build_options.append('-DFEATURE_ERROR_MESSAGES=%s' % arguments.error_messages)
     build_options.append('-DJERRY_CMDLINE=%s' % arguments.jerry_cmdline)
     build_options.append('-DJERRY_CMDLINE_MINIMAL=%s' % arguments.jerry_cmdline_minimal)
+    build_options.append('-DJERRY_CMDLINE_SNAPSHOT=%s' % arguments.jerry_cmdline_snapshot)
     build_options.append('-DJERRY_PORT_DEFAULT=%s' % arguments.jerry_port_default)
     build_options.append('-DJERRY_EXT=%s' % arguments.jerry_ext)
     build_options.append('-DJERRY_LIBC=%s' % arguments.jerry_libc)

tools/run-tests.py

@@ -128,6 +128,8 @@ JERRY_BUILDOPTIONS = [
             ['--jerry-libc=off', '--compile-flag=-m32', '--cpointer-32bit=on', '--system-allocator=on']),
     Options('buildoption_test-external_context',
             ['--jerry-libc=off', '--external-context=on']),
+    Options('buildoption_test-snapshot_tool',
+            ['--jerry-cmdline-snapshot=on']),
 ]
 
 def get_arguments():