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-rw-r--r--src/tools/js-wrapper.h18
1 files changed, 17 insertions, 1 deletions
diff --git a/src/tools/js-wrapper.h b/src/tools/js-wrapper.h
index cb5c0bd5b..7cf2ffc53 100644
--- a/src/tools/js-wrapper.h
+++ b/src/tools/js-wrapper.h
@@ -22,10 +22,15 @@
namespace wasm {
static std::string generateJSWrapper(Module& wasm) {
+ PassRunner runner(&wasm);
+ runner.add("legalize-js-interface");
+ runner.run();
+
std::string ret;
ret += "if (typeof console === 'undefined') {\n"
" console = { log: print };\n"
"}\n"
+ "var tempRet0;\n"
"var binary;\n"
"if (typeof process === 'object' && typeof require === 'function' /* node.js detection */) {\n"
" var args = process.argv.slice(2);\n"
@@ -44,7 +49,18 @@ static std::string generateJSWrapper(Module& wasm) {
" binary = read(args[0], 'binary');\n"
" }\n"
"}\n"
- "var instance = new WebAssembly.Instance(new WebAssembly.Module(binary), {});\n";
+ "var instance = new WebAssembly.Instance(new WebAssembly.Module(binary), {\n"
+ " 'fuzzing-support': {\n"
+ " 'log-i32': function(x) { console.log('i32: ' + x) },\n"
+ " 'log-i64': function(x, y) { console.log('i64: ' + x + ', ' + y) },\n"
+ " 'log-f32': function(x) { console.log('f32: ' + x) },\n"
+ " 'log-f64': function(x) { console.log('f64: ' + x) }\n"
+ " },\n"
+ " 'env': {\n"
+ " 'setTempRet0': function(x) { tempRet0 = x },\n"
+ " 'getTempRet0': function() { return tempRet0 },\n"
+ " },\n"
+ "});\n";
for (auto& exp : wasm.exports) {
auto* func = wasm.getFunctionOrNull(exp->value);
if (!func) continue; // something exported other than a function