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from collections import OrderedDict
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/GenerateInstrinsic.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()
# Load into an OrderedDict to ensure order is preserved. Note: Python 3.7+
# also preserves ordering for normal dictionaries.
# Code based on https://stackoverflow.com/a/21912744.
class OrderedLoader(yaml.Loader):
pass
def construct_mapping(loader, node):
loader.flatten_mapping(node)
return OrderedDict(loader.construct_pairs(node))
tag = yaml.resolver.BaseResolver.DEFAULT_MAPPING_TAG
OrderedLoader.add_constructor(tag, construct_mapping)
return yaml.load(contents, OrderedLoader)
def main(c_out, yaml_path):
data = load_yaml(yaml_path)
# Interate for all defined intrinsics
contents = "#define FOR_EACH_INTRINSIC(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']}, {i})\\\n"
)
contents += "\n"
for op in data:
# Define DECLARE_INTRINSIC_SAS_PARAM_VALTYPES_<op> as:
# `{ValType::I32, ValType::I32, ...}`.
contents += (
f"#define DECLARE_INTRINSIC_SAS_PARAM_VALTYPES_{op['op']} "
f"{{ValType::{', ValType::'.join(op['params'])}}}\n"
)
# Define DECLARE_INTRINSIC_PARAM_TYPES_<op> as:
# `<num_types>, {_PTR, _I32, ..., _PTR, _END}`.
sas_types = f"{{_PTR{''.join(', _' + p for p in op['params'])}, _PTR, _END}}"
num_types = len(op["params"]) + 2
contents += f"#define DECLARE_INTRINSIC_PARAM_TYPES_{op['op']} {num_types}, {sas_types}\n"
generate_header(c_out, "wasm_WasmIntrinsicGenerated_h", contents)
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