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1286948

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1286948 - Adds debug mode for WASM baseline compiler.

1286948 - Adds scope and environment for wasm calls (Adds artificial JS scope and environment for wasm frames. That allows
debugger to properly handle call stack).

1286948 - Adds prolog and epilog debug traps and handlers (Using toggled call/traps to invoke handler to process enter and leave
frame events).

1286948 - onEnterFrame/onLeaveFrame wasm events and callstack (Handles onEnterFrame and onLeaveFrame trap handling. The FrameIter is used in
the DebuggerFrame instead of ScriptFrameIter. The debug wasm frame is created
and can be found on callstack during those event).

Does not compile without 1331452 - Keep scope in a slot in WasmFunctionCallObjects along with 1335773 - Inspects wasm function locals to build
This commit is contained in:
win7-7 2025-12-29 21:03:14 +02:00 • committed by wuggy
commit 9754fb007b
49 changed files with 1447 additions and 158 deletions
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28
js/src/vm/Debugger.h
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@ -297,7 +297,7 @@ class Debugger : private mozilla::LinkedListElement<Debugger>
virtual const HashSet<Zone*>* zones() const { return nullptr; }
virtual bool shouldRecompileOrInvalidate(JSScript* script) const = 0;
virtual bool shouldMarkAsDebuggee(ScriptFrameIter& iter) const = 0;
virtual bool shouldMarkAsDebuggee(FrameIter& iter) const = 0;
};
// This enum is converted to and compare with bool values; NotObserving
@ -768,11 +768,11 @@ class Debugger : private mozilla::LinkedListElement<Debugger>
* Gets a Debugger.Frame object. If maybeIter is non-null, we eagerly copy
* its data if we need to make a new Debugger.Frame.
*/
MOZ_MUST_USE bool getScriptFrameWithIter(JSContext* cx, AbstractFramePtr frame,
const ScriptFrameIter* maybeIter,
[[nodiscard]] bool getScriptFrameWithIter(JSContext* cx, AbstractFramePtr frame,
const FrameIter* maybeIter,
MutableHandleValue vp);
MOZ_MUST_USE bool getScriptFrameWithIter(JSContext* cx, AbstractFramePtr frame,
const ScriptFrameIter* maybeIter,
[[nodiscard]] bool getScriptFrameWithIter(JSContext* cx, AbstractFramePtr frame,
const FrameIter* maybeIter,
MutableHandleDebuggerFrame result);
inline Breakpoint* firstBreakpoint() const;
@ -911,6 +911,7 @@ class Debugger : private mozilla::LinkedListElement<Debugger>
bool observesFrame(AbstractFramePtr frame) const;
bool observesFrame(const FrameIter& iter) const;
bool observesScript(JSScript* script) const;
bool observesWasm(wasm::Instance* instance) const;
/*
* If env is nullptr, call vp->setNull() and return true. Otherwise, find
@ -995,11 +996,11 @@ class Debugger : private mozilla::LinkedListElement<Debugger>
* frame, in which case the cost of walking the stack has already been
* paid.
*/
MOZ_MUST_USE bool getScriptFrame(JSContext* cx, const ScriptFrameIter& iter,
[[nodiscard]] bool getScriptFrame(JSContext* cx, const FrameIter& iter,
MutableHandleValue vp) {
return getScriptFrameWithIter(cx, iter.abstractFramePtr(), &iter, vp);
}
MOZ_MUST_USE bool getScriptFrame(JSContext* cx, const ScriptFrameIter& iter,
[[nodiscard]] bool getScriptFrame(JSContext* cx, const FrameIter& iter,
MutableHandleDebuggerFrame result);
@ -1144,13 +1145,15 @@ enum class DebuggerFrameType {
Eval,
Global,
Call,
Module
Module,
WasmCall
};
enum class DebuggerFrameImplementation {
Interpreter,
Baseline,
Ion
Ion,
Wasm
};
class DebuggerFrame : public NativeObject
@ -1166,7 +1169,7 @@ class DebuggerFrame : public NativeObject
static NativeObject* initClass(JSContext* cx, HandleObject dbgCtor, HandleObject objProto);
static DebuggerFrame* create(JSContext* cx, HandleObject proto, AbstractFramePtr referent,
const ScriptFrameIter* maybeIter, HandleNativeObject debugger);
const FrameIter* maybeIter, HandleNativeObject debugger);
static MOZ_MUST_USE bool getCallee(JSContext* cx, HandleDebuggerFrame frame,
MutableHandleDebuggerObject result);
@ -1197,8 +1200,9 @@ class DebuggerFrame : public NativeObject
static const JSFunctionSpec methods_[];
static AbstractFramePtr getReferent(HandleDebuggerFrame frame);
static MOZ_MUST_USE bool getScriptFrameIter(JSContext* cx, HandleDebuggerFrame frame,
mozilla::Maybe<ScriptFrameIter>& result);
[[nodiscard]] static bool getFrameIter(JSContext* cx, HandleDebuggerFrame frame,
mozilla::Maybe<FrameIter>& result);
[[nodiscard]] static bool requireScriptReferent(JSContext* cx, HandleDebuggerFrame frame);
static MOZ_MUST_USE bool construct(JSContext* cx, unsigned argc, Value* vp);