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-rw-r--r--js/src/wasm/AsmJS.cpp89
1 files changed, 13 insertions, 76 deletions
diff --git a/js/src/wasm/AsmJS.cpp b/js/src/wasm/AsmJS.cpp
index 34f5a8c0d..b4f41c3d5 100644
--- a/js/src/wasm/AsmJS.cpp
+++ b/js/src/wasm/AsmJS.cpp
@@ -21,6 +21,7 @@
#include "mozilla/Attributes.h"
#include "mozilla/Compression.h"
#include "mozilla/MathAlgorithms.h"
+#include "mozilla/Maybe.h"
#include "jsmath.h"
#include "jsprf.h"
@@ -678,7 +679,7 @@ FunctionObject(ParseNode* fn)
static inline PropertyName*
FunctionName(ParseNode* fn)
{
- if (JSAtom* name = FunctionObject(fn)->name())
+ if (JSAtom* name = FunctionObject(fn)->explicitName())
return name->asPropertyName();
return nullptr;
}
@@ -3248,7 +3249,7 @@ static bool
CheckFunctionHead(ModuleValidator& m, ParseNode* fn)
{
JSFunction* fun = FunctionObject(fn);
- if (fun->hasRest())
+ if (fn->pn_funbox->hasRest())
return m.fail(fn, "rest args not allowed");
if (fun->isExprBody())
return m.fail(fn, "expression closures not allowed");
@@ -8033,25 +8034,10 @@ TryInstantiate(JSContext* cx, CallArgs args, Module& module, const AsmJSMetadata
return true;
}
-static MOZ_MUST_USE bool
-MaybeAppendUTF8Name(JSContext* cx, const char* utf8Chars, MutableHandle<PropertyNameVector> names)
-{
- if (!utf8Chars)
- return true;
-
- UTF8Chars utf8(utf8Chars, strlen(utf8Chars));
-
- JSAtom* atom = AtomizeUTF8Chars(cx, utf8Chars, strlen(utf8Chars));
- if (!atom)
- return false;
-
- return names.append(atom->asPropertyName());
-}
-
static bool
HandleInstantiationFailure(JSContext* cx, CallArgs args, const AsmJSMetadata& metadata)
{
- RootedAtom name(cx, args.callee().as<JSFunction>().name());
+ RootedAtom name(cx, args.callee().as<JSFunction>().explicitName());
if (cx->isExceptionPending())
return false;
@@ -8068,8 +8054,8 @@ HandleInstantiationFailure(JSContext* cx, CallArgs args, const AsmJSMetadata& me
return false;
}
- uint32_t begin = metadata.srcBodyStart; // starts right after 'use asm'
- uint32_t end = metadata.srcEndBeforeCurly();
+ uint32_t begin = metadata.srcStart;
+ uint32_t end = metadata.srcEndAfterCurly();
Rooted<JSFlatString*> src(cx, source->substringDontDeflate(cx, begin, end));
if (!src)
return false;
@@ -8080,18 +8066,11 @@ HandleInstantiationFailure(JSContext* cx, CallArgs args, const AsmJSMetadata& me
if (!fun)
return false;
- Rooted<PropertyNameVector> formals(cx, PropertyNameVector(cx));
- if (!MaybeAppendUTF8Name(cx, metadata.globalArgumentName.get(), &formals))
- return false;
- if (!MaybeAppendUTF8Name(cx, metadata.importArgumentName.get(), &formals))
- return false;
- if (!MaybeAppendUTF8Name(cx, metadata.bufferArgumentName.get(), &formals))
- return false;
-
CompileOptions options(cx);
options.setMutedErrors(source->mutedErrors())
.setFile(source->filename())
.setNoScriptRval(false);
+ options.asmJSOption = AsmJSOption::Disabled;
// The exported function inherits an implicit strict context if the module
// also inherited it somehow.
@@ -8106,8 +8085,8 @@ HandleInstantiationFailure(JSContext* cx, CallArgs args, const AsmJSMetadata& me
SourceBufferHolder::Ownership ownership = stableChars.maybeGiveOwnershipToCaller()
? SourceBufferHolder::GiveOwnership
: SourceBufferHolder::NoOwnership;
- SourceBufferHolder srcBuf(chars, end - begin, ownership);
- if (!frontend::CompileFunctionBody(cx, &fun, options, formals, srcBuf))
+ SourceBufferHolder srcBuf(chars, stableChars.twoByteRange().length(), ownership);
+ if (!frontend::CompileStandaloneFunction(cx, &fun, options, srcBuf, Nothing()))
return false;
// Call the function we just recompiled.
@@ -8149,7 +8128,7 @@ InstantiateAsmJS(JSContext* cx, unsigned argc, JS::Value* vp)
static JSFunction*
NewAsmJSModuleFunction(ExclusiveContext* cx, JSFunction* origFun, HandleObject moduleObj)
{
- RootedAtom name(cx, origFun->name());
+ RootedAtom name(cx, origFun->explicitName());
JSFunction::Flags flags = origFun->isLambda() ? JSFunction::ASMJS_LAMBDA_CTOR
: JSFunction::ASMJS_CTOR;
@@ -8849,23 +8828,6 @@ js::IsAsmJSModuleLoadedFromCache(JSContext* cx, unsigned argc, Value* vp)
/*****************************************************************************/
// asm.js toString/toSource support
-static MOZ_MUST_USE bool
-MaybeAppendUTF8Chars(JSContext* cx, const char* sep, const char* utf8Chars, StringBuffer* sb)
-{
- if (!utf8Chars)
- return true;
-
- UTF8Chars utf8(utf8Chars, strlen(utf8Chars));
-
- size_t length;
- UniqueTwoByteChars twoByteChars(UTF8CharsToNewTwoByteCharsZ(cx, utf8, &length).get());
- if (!twoByteChars)
- return false;
-
- return sb->append(sep, strlen(sep)) &&
- sb->append(twoByteChars.get(), length);
-}
-
JSString*
js::AsmJSModuleToString(JSContext* cx, HandleFunction fun, bool addParenToLambda)
{
@@ -8884,7 +8846,7 @@ js::AsmJSModuleToString(JSContext* cx, HandleFunction fun, bool addParenToLambda
if (!out.append("function "))
return nullptr;
- if (fun->name() && !out.append(fun->name()))
+ if (fun->explicitName() && !out.append(fun->explicitName()))
return nullptr;
bool haveSource = source->hasSourceData();
@@ -8895,33 +8857,12 @@ js::AsmJSModuleToString(JSContext* cx, HandleFunction fun, bool addParenToLambda
if (!out.append("() {\n [sourceless code]\n}"))
return nullptr;
} else {
- // Whether the function has been created with a Function ctor
- bool funCtor = begin == 0 && end == source->length() && source->argumentsNotIncluded();
- if (funCtor) {
- // Functions created with the function constructor don't have arguments in their source.
- if (!out.append("("))
- return nullptr;
-
- if (!MaybeAppendUTF8Chars(cx, "", metadata.globalArgumentName.get(), &out))
- return nullptr;
- if (!MaybeAppendUTF8Chars(cx, ", ", metadata.importArgumentName.get(), &out))
- return nullptr;
- if (!MaybeAppendUTF8Chars(cx, ", ", metadata.bufferArgumentName.get(), &out))
- return nullptr;
-
- if (!out.append(") {\n"))
- return nullptr;
- }
-
Rooted<JSFlatString*> src(cx, source->substring(cx, begin, end));
if (!src)
return nullptr;
if (!out.append(src))
return nullptr;
-
- if (funCtor && !out.append("\n}"))
- return nullptr;
}
if (addParenToLambda && fun->isLambda() && !out.append(")"))
@@ -8953,16 +8894,12 @@ js::AsmJSFunctionToString(JSContext* cx, HandleFunction fun)
if (!haveSource) {
// asm.js functions can't be anonymous
- MOZ_ASSERT(fun->name());
- if (!out.append(fun->name()))
+ MOZ_ASSERT(fun->explicitName());
+ if (!out.append(fun->explicitName()))
return nullptr;
if (!out.append("() {\n [sourceless code]\n}"))
return nullptr;
} else {
- // asm.js functions cannot have been created with a Function constructor
- // as they belong within a module.
- MOZ_ASSERT(!(begin == 0 && end == source->length() && source->argumentsNotIncluded()));
-
Rooted<JSFlatString*> src(cx, source->substring(cx, begin, end));
if (!src)
return nullptr;
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-10 08:37:15 +0000