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-rw-r--r--src/asm2wasm.h2
-rw-r--r--src/pass.h4
-rw-r--r--src/passes/pass.cpp4
-rw-r--r--src/tools/asm2wasm.cpp6
-rw-r--r--src/tools/optimization-options.h3
-rw-r--r--src/tools/wasm-as.cpp2
-rw-r--r--src/tools/wasm-opt.cpp11
-rw-r--r--src/wasm-printing.h1
-rw-r--r--src/wasm-validator.h2
-rw-r--r--src/wasm.h7
-rw-r--r--src/wasm/wasm-validator.cpp11
11 files changed, 41 insertions, 12 deletions
diff --git a/src/asm2wasm.h b/src/asm2wasm.h
index c02376963..a030a2024 100644
--- a/src/asm2wasm.h
+++ b/src/asm2wasm.h
@@ -379,7 +379,6 @@ public:
Asm2WasmPreProcessor& preprocessor;
bool debug;
-
TrapMode trapMode;
TrappingFunctionContainer trappingFunctions;
PassOptions passOptions;
@@ -1286,6 +1285,7 @@ void Asm2WasmBuilder::processAsm(Ref ast) {
};
PassRunner passRunner(&wasm);
+ passRunner.setFeatures(passOptions.features);
if (debug) {
passRunner.setDebug(true);
passRunner.setValidateGlobally(false);
diff --git a/src/pass.h b/src/pass.h
index 20384241c..236878a1a 100644
--- a/src/pass.h
+++ b/src/pass.h
@@ -62,6 +62,7 @@ struct PassOptions {
int shrinkLevel = 0; // 0, 1, 2 correspond to -O0, -Os, -Oz
bool ignoreImplicitTraps = false; // optimize assuming things like div by 0, bad load/store, will not trap
bool debugInfo = false; // whether to try to preserve debug info through, which are special calls
+ FeatureSet features = Feature::MVP; // Which wasm features to accept, and be allowed to use
};
//
@@ -87,6 +88,9 @@ struct PassRunner {
void setValidateGlobally(bool validate) {
options.validateGlobally = validate;
}
+ void setFeatures(FeatureSet features) {
+ options.features = features;
+ }
void add(std::string passName) {
auto pass = PassRegistry::get()->createPass(passName);
diff --git a/src/passes/pass.cpp b/src/passes/pass.cpp
index 4e105f71d..d92a4a80c 100644
--- a/src/passes/pass.cpp
+++ b/src/passes/pass.cpp
@@ -231,7 +231,7 @@ void PassRunner::run() {
totalTime += diff;
// validate, ignoring the time
std::cerr << "[PassRunner] (validating)\n";
- if (!WasmValidator().validate(*wasm, validationFlags)) {
+ if (!WasmValidator().validate(*wasm, options.features, validationFlags)) {
if (passDebug >= 2) {
std::cerr << "Last pass (" << pass->name << ") broke validation. Here is the module before: \n" << moduleBefore.str() << "\n";
} else {
@@ -246,7 +246,7 @@ void PassRunner::run() {
std::cerr << "[PassRunner] passes took " << totalTime.count() << " seconds." << std::endl;
// validate
std::cerr << "[PassRunner] (final validation)\n";
- if (!WasmValidator().validate(*wasm, validationFlags)) {
+ if (!WasmValidator().validate(*wasm, options.features, validationFlags)) {
std::cerr << "final module does not validate\n";
abort();
}
diff --git a/src/tools/asm2wasm.cpp b/src/tools/asm2wasm.cpp
index 455410cd6..4ec68283f 100644
--- a/src/tools/asm2wasm.cpp
+++ b/src/tools/asm2wasm.cpp
@@ -115,6 +115,9 @@ int main(int argc, const char *argv[]) {
.add("--emit-text", "-S", "Emit text instead of binary for the output file",
Options::Arguments::Zero,
[&](Options *o, const std::string &argument) { emitBinary = false; })
+ .add("--enable-threads", "-a", "Enable the Atomics wasm feature",
+ Options::Arguments::Zero,
+ [&](Options *o, const std::string &argument) { options.passOptions.features |= Feature::Atomics; })
.add_positional("INFILE", Options::Arguments::One,
[](Options *o, const std::string &argument) {
o->extra["infile"] = argument;
@@ -176,6 +179,7 @@ int main(int argc, const char *argv[]) {
wasm.memory.segments.emplace_back(init, data);
if (options.runningDefaultOptimizationPasses()) {
PassRunner runner(&wasm);
+ runner.setFeatures(options.features);
runner.add("memory-packing");
runner.run();
}
@@ -202,7 +206,7 @@ int main(int argc, const char *argv[]) {
}
}
- if (!WasmValidator().validate(wasm)) {
+ if (!WasmValidator().validate(wasm, options.passOptions.features)) {
Fatal() << "error in validating output";
}
diff --git a/src/tools/optimization-options.h b/src/tools/optimization-options.h
index a15024151..c2f7f44af 100644
--- a/src/tools/optimization-options.h
+++ b/src/tools/optimization-options.h
@@ -25,6 +25,7 @@ struct OptimizationOptions : public Options {
std::vector<std::string> passes;
PassOptions passOptions;
+ FeatureSet features = Feature::Atomics;
OptimizationOptions(const std::string &command, const std::string &description) : Options(command, description) {
(*this).add("", "-O", "execute default optimization passes",
@@ -118,6 +119,7 @@ struct OptimizationOptions : public Options {
void runPasses(Module& wasm) {
PassRunner passRunner(&wasm, passOptions);
if (debug) passRunner.setDebug(true);
+ passRunner.setFeatures(features);
for (auto& pass : passes) {
if (pass == DEFAULT_OPT_PASSES) {
passRunner.addDefaultOptimizationPasses();
@@ -130,4 +132,3 @@ struct OptimizationOptions : public Options {
};
} // namespace wasm
-
diff --git a/src/tools/wasm-as.cpp b/src/tools/wasm-as.cpp
index 956ad213f..d456f43fd 100644
--- a/src/tools/wasm-as.cpp
+++ b/src/tools/wasm-as.cpp
@@ -92,7 +92,7 @@ int main(int argc, const char *argv[]) {
if (options.extra["validate"] != "none") {
if (options.debug) std::cerr << "Validating..." << std::endl;
- if (!wasm::WasmValidator().validate(wasm,
+ if (!wasm::WasmValidator().validate(wasm, Feature::All,
WasmValidator::Globally | (options.extra["validate"] == "web" ? WasmValidator::Web : 0))) {
Fatal() << "Error: input module is not valid.\n";
}
diff --git a/src/tools/wasm-opt.cpp b/src/tools/wasm-opt.cpp
index b813b5dd3..7c2a3a35a 100644
--- a/src/tools/wasm-opt.cpp
+++ b/src/tools/wasm-opt.cpp
@@ -110,6 +110,9 @@ int main(int argc, const char* argv[]) {
options.parse(argc, argv);
Module wasm;
+ // It should be safe to just always enable atomics in wasm-opt, because we
+ // don't expect any passes to accidentally generate atomic ops
+ FeatureSet features = Feature::Atomics;
if (options.debug) std::cerr << "reading...\n";
@@ -125,14 +128,14 @@ int main(int argc, const char* argv[]) {
Fatal() << "error in building module, std::bad_alloc (possibly invalid request for silly amounts of memory)";
}
- if (!WasmValidator().validate(wasm)) {
+ if (!WasmValidator().validate(wasm, features)) {
Fatal() << "error in validating input";
}
} else {
// translate-to-fuzz
TranslateToFuzzReader reader(wasm);
reader.read(options.extra["infile"]);
- if (!WasmValidator().validate(wasm)) {
+ if (!WasmValidator().validate(wasm, features)) {
std::cerr << "translate-to-fuzz must always generate a valid module";
abort();
}
@@ -173,7 +176,7 @@ int main(int argc, const char* argv[]) {
if (options.runningPasses()) {
if (options.debug) std::cerr << "running passes...\n";
options.runPasses(wasm);
- assert(WasmValidator().validate(wasm));
+ assert(WasmValidator().validate(wasm, features));
}
if (fuzzExec) {
@@ -189,7 +192,7 @@ int main(int argc, const char* argv[]) {
auto input = buffer.getAsChars();
WasmBinaryBuilder parser(second, input, false);
parser.read();
- assert(WasmValidator().validate(second));
+ assert(WasmValidator().validate(second, features));
}
results.check(*compare);
}
diff --git a/src/wasm-printing.h b/src/wasm-printing.h
index c8b44e394..3b5b94cc2 100644
--- a/src/wasm-printing.h
+++ b/src/wasm-printing.h
@@ -27,6 +27,7 @@ namespace wasm {
struct WasmPrinter {
static std::ostream& printModule(Module* module, std::ostream& o) {
PassRunner passRunner(module);
+ passRunner.setFeatures(Feature::All);
passRunner.setIsNested(true);
passRunner.add<Printer>(&o);
passRunner.run();
diff --git a/src/wasm-validator.h b/src/wasm-validator.h
index 9f9cddb02..81d65a6bd 100644
--- a/src/wasm-validator.h
+++ b/src/wasm-validator.h
@@ -57,7 +57,7 @@ struct WasmValidator {
};
typedef uint32_t Flags;
- bool validate(Module& module, Flags flags = Globally);
+ bool validate(Module& module, FeatureSet features = MVP, Flags flags = Globally);
};
} // namespace wasm
diff --git a/src/wasm.h b/src/wasm.h
index c31aac9c1..485afade1 100644
--- a/src/wasm.h
+++ b/src/wasm.h
@@ -56,6 +56,13 @@
namespace wasm {
+enum Feature : uint32_t {
+ MVP = 0,
+ Atomics = 1 << 0,
+ All = 0xffffffff,
+};
+typedef uint32_t FeatureSet;
+
// An index in a wasm module
typedef uint32_t Index;
diff --git a/src/wasm/wasm-validator.cpp b/src/wasm/wasm-validator.cpp
index 780d74c2d..4359b4e13 100644
--- a/src/wasm/wasm-validator.cpp
+++ b/src/wasm/wasm-validator.cpp
@@ -49,6 +49,7 @@ inline std::ostream& printModuleComponent(Expression* curr, std::ostream& stream
struct ValidationInfo {
bool validateWeb;
bool validateGlobally;
+ FeatureSet features;
bool quiet;
std::atomic<bool> valid;
@@ -483,6 +484,7 @@ void FunctionValidator::visitSetLocal(SetLocal *curr) {
}
void FunctionValidator::visitLoad(Load *curr) {
+ if (curr->isAtomic) shouldBeTrue(info.features & Feature::Atomics, curr, "Atomic operation (atomics are disabled)");
shouldBeFalse(curr->isAtomic && !getModule()->memory.shared, curr, "Atomic operation with non-shared memory");
validateMemBytes(curr->bytes, curr->type, curr);
validateAlignment(curr->align, curr->type, curr->bytes, curr->isAtomic, curr);
@@ -491,6 +493,7 @@ void FunctionValidator::visitLoad(Load *curr) {
}
void FunctionValidator::visitStore(Store *curr) {
+ if (curr->isAtomic) shouldBeTrue(info.features & Feature::Atomics, curr, "Atomic operation (atomics are disabled)");
shouldBeFalse(curr->isAtomic && !getModule()->memory.shared, curr, "Atomic operation with non-shared memory");
validateMemBytes(curr->bytes, curr->valueType, curr);
validateAlignment(curr->align, curr->type, curr->bytes, curr->isAtomic, curr);
@@ -500,6 +503,7 @@ void FunctionValidator::visitStore(Store *curr) {
}
void FunctionValidator::visitAtomicRMW(AtomicRMW* curr) {
+ shouldBeTrue(info.features & Feature::Atomics, curr, "Atomic operation (atomics are disabled)");
shouldBeFalse(!getModule()->memory.shared, curr, "Atomic operation with non-shared memory");
validateMemBytes(curr->bytes, curr->type, curr);
shouldBeEqualOrFirstIsUnreachable(curr->ptr->type, i32, curr, "AtomicRMW pointer type must be i32");
@@ -508,6 +512,7 @@ void FunctionValidator::visitAtomicRMW(AtomicRMW* curr) {
}
void FunctionValidator::visitAtomicCmpxchg(AtomicCmpxchg* curr) {
+ shouldBeTrue(info.features & Feature::Atomics, curr, "Atomic operation (atomics are disabled)");
shouldBeFalse(!getModule()->memory.shared, curr, "Atomic operation with non-shared memory");
validateMemBytes(curr->bytes, curr->type, curr);
shouldBeEqualOrFirstIsUnreachable(curr->ptr->type, i32, curr, "cmpxchg pointer type must be i32");
@@ -520,6 +525,7 @@ void FunctionValidator::visitAtomicCmpxchg(AtomicCmpxchg* curr) {
}
void FunctionValidator::visitAtomicWait(AtomicWait* curr) {
+ shouldBeTrue(info.features & Feature::Atomics, curr, "Atomic operation (atomics are disabled)");
shouldBeFalse(!getModule()->memory.shared, curr, "Atomic operation with non-shared memory");
shouldBeEqualOrFirstIsUnreachable(curr->type, i32, curr, "AtomicWait must have type i32");
shouldBeEqualOrFirstIsUnreachable(curr->ptr->type, i32, curr, "AtomicWait pointer type must be i32");
@@ -529,6 +535,7 @@ void FunctionValidator::visitAtomicWait(AtomicWait* curr) {
}
void FunctionValidator::visitAtomicWake(AtomicWake* curr) {
+ shouldBeTrue(info.features & Feature::Atomics, curr, "Atomic operation (atomics are disabled)");
shouldBeFalse(!getModule()->memory.shared, curr, "Atomic operation with non-shared memory");
shouldBeEqualOrFirstIsUnreachable(curr->type, i32, curr, "AtomicWake must have type i32");
shouldBeEqualOrFirstIsUnreachable(curr->ptr->type, i32, curr, "AtomicWake pointer type must be i32");
@@ -957,6 +964,7 @@ static void validateMemory(Module& module, ValidationInfo& info) {
info.shouldBeFalse(curr.initial > curr.max, "memory", "memory max >= initial");
info.shouldBeTrue(curr.max <= Memory::kMaxSize, "memory", "max memory must be <= 4GB");
info.shouldBeTrue(!curr.shared || curr.hasMax(), "memory", "shared memory must have max size");
+ if (curr.shared) info.shouldBeTrue(info.features & Feature::Atomics, "memory", "memory is shared, but atomics are disabled");
Index mustBeGreaterOrEqual = 0;
for (auto& segment : curr.segments) {
if (!info.shouldBeEqual(segment.offset->type, i32, segment.offset, "segment offset should be i32")) continue;
@@ -998,10 +1006,11 @@ static void validateModule(Module& module, ValidationInfo& info) {
// TODO: If we want the validator to be part of libwasm rather than libpasses, then
// Using PassRunner::getPassDebug causes a circular dependence. We should fix that,
// perhaps by moving some of the pass infrastructure into libsupport.
-bool WasmValidator::validate(Module& module, Flags flags) {
+bool WasmValidator::validate(Module& module, FeatureSet features, Flags flags) {
ValidationInfo info;
info.validateWeb = flags & Web;
info.validateGlobally = flags & Globally;
+ info.features = features;
info.quiet = flags & Quiet;
// parallel wasm logic validation
PassRunner runner(&module);
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-06 16:53:36 +0000