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import buildconfig
import six
import yaml
from mozbuild.preprocessor import Preprocessor
HEADER_TEMPLATE = """\
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef %(includeguard)s
#define %(includeguard)s
/* This file is generated by wasm/GenerateBuiltinModules.py. Do not edit! */
%(contents)s
#endif // %(includeguard)s
"""
def generate_header(c_out, includeguard, contents):
c_out.write(
HEADER_TEMPLATE
% {
"includeguard": includeguard,
"contents": contents,
}
)
def load_yaml(yaml_path):
# First invoke preprocessor.py so that we can use #ifdef JS_SIMULATOR in
# the YAML file.
pp = Preprocessor()
pp.context.update(buildconfig.defines["ALLDEFINES"])
pp.out = six.StringIO()
pp.do_filter("substitution")
pp.do_include(yaml_path)
contents = pp.out.getvalue()
return yaml.safe_load(contents)
def cppBool(v):
if v:
return "true"
return "false"
def main(c_out, yaml_path):
data = load_yaml(yaml_path)
# Iterate for all defined builtin methods
contents = "#define FOR_EACH_BUILTIN_MODULE_FUNC(M) \\\n"
for i in range(len(data)):
op = data[i]
sa = op["symbolic_address"]
contents += (
f" M({op['op']}, \"{op['export']}\", "
f"{sa['name']}, {sa['type']}, {op['entry']}, {cppBool(op['uses_memory'])}, {i})\\\n"
)
contents += "\n"
for op in data:
# Define DECLARE_BUILTIN_MODULE_FUNC_PARAM_VALTYPES_<op> as:
# `{ValType::I32, ValType::I32, ...}`.
contents += (
f"#define DECLARE_BUILTIN_MODULE_FUNC_PARAM_VALTYPES_{op['op']} "
f"{{{', '.join(op['params'])}}}\n"
)
# Define DECLARE_BUILTIN_MODULE_FUNC_PARAM_SASTYPES_<op> as:
# `<num_types>, {_PTR, _I32, ..., _PTR, _END}`.
num_types = len(op["params"]) + 1
sas_types = (
f"{{_PTR{''.join(', ' + (p + '.toMIRType()') for p in op['params'])}"
)
if op["uses_memory"]:
sas_types += ", _PTR"
num_types += 1
sas_types += ", _END}"
contents += f"#define DECLARE_BUILTIN_MODULE_FUNC_PARAM_SASTYPES_{op['op']} {num_types}, {sas_types}\n"
result_valtype = ""
result_sastype = ""
if "result" in op:
result_valtype = f"Some({op['result']})\n"
result_sastype = f"{op['result']}.toMIRType()\n"
else:
result_valtype = "Nothing()"
result_sastype = "_VOID"
contents += f"#define DECLARE_BUILTIN_MODULE_FUNC_RESULT_VALTYPE_{op['op']} {result_valtype}\n"
contents += f"#define DECLARE_BUILTIN_MODULE_FUNC_RESULT_SASTYPE_{op['op']} {result_sastype}\n"
contents += f"#define DECLARE_BUILTIN_MODULE_FUNC_FAILMODE_{op['op']} _{op['fail_mode']}\n"
generate_header(c_out, "wasm_WasmBuiltinModuleGenerated_h", contents)
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