bool
BaselineFrame::initForOsr(InterpreterFrame *fp, uint32_t numStackValues)
{
mozilla::PodZero(this);
scopeChain_ = fp->scopeChain();
if (fp->hasCallObjUnchecked())
flags_ |= BaselineFrame::HAS_CALL_OBJ;
if (fp->isEvalFrame()) {
flags_ |= BaselineFrame::EVAL;
evalScript_ = fp->script();
}
if (fp->script()->needsArgsObj() && fp->hasArgsObj()) {
flags_ |= BaselineFrame::HAS_ARGS_OBJ;
argsObj_ = &fp->argsObj();
}
if (fp->hasHookData()) {
flags_ |= BaselineFrame::HAS_HOOK_DATA;
hookData_ = fp->hookData();
}
if (fp->hasReturnValue())
setReturnValue(fp->returnValue());
if (fp->hasPushedSPSFrame())
flags_ |= BaselineFrame::HAS_PUSHED_SPS_FRAME;
frameSize_ = BaselineFrame::FramePointerOffset +
BaselineFrame::Size() +
numStackValues * sizeof(Value);
JS_ASSERT(numValueSlots() == numStackValues);
for (uint32_t i = 0; i < numStackValues; i++)
*valueSlot(i) = fp->slots()[i];
JSContext *cx = GetJSContextFromJitCode();
if (cx->compartment()->debugMode()) {
// In debug mode, update any Debugger.Frame objects for the
// InterpreterFrame to point to the BaselineFrame.
// The caller pushed a fake return address. ScriptFrameIter, used by the
// debugger, wants a valid return address, but it's okay to just pick one.
// In debug mode there's always at least 1 ICEntry (since there are always
// debug prologue/epilogue calls).
IonFrameIterator iter(cx);
JS_ASSERT(iter.returnAddress() == nullptr);
BaselineScript *baseline = fp->script()->baselineScript();
iter.current()->setReturnAddress(baseline->returnAddressForIC(baseline->icEntry(0)));
if (!Debugger::handleBaselineOsr(cx, fp, this))
return false;
}
return true;
}
bool
BaselineFrame::initForOsr(InterpreterFrame* fp, uint32_t numStackValues)
{
mozilla::PodZero(this);
envChain_ = fp->environmentChain();
if (fp->hasInitialEnvironmentUnchecked())
flags_ |= BaselineFrame::HAS_INITIAL_ENV;
if (fp->script()->needsArgsObj() && fp->hasArgsObj()) {
flags_ |= BaselineFrame::HAS_ARGS_OBJ;
argsObj_ = &fp->argsObj();
}
if (fp->hasReturnValue())
setReturnValue(fp->returnValue());
frameSize_ = BaselineFrame::FramePointerOffset +
BaselineFrame::Size() +
numStackValues * sizeof(Value);
MOZ_ASSERT(numValueSlots() == numStackValues);
for (uint32_t i = 0; i < numStackValues; i++)
*valueSlot(i) = fp->slots()[i];
if (fp->isDebuggee()) {
JSContext* cx = GetJSContextFromMainThread();
// For debuggee frames, update any Debugger.Frame objects for the
// InterpreterFrame to point to the BaselineFrame.
// The caller pushed a fake return address. ScriptFrameIter, used by the
// debugger, wants a valid return address, but it's okay to just pick one.
// In debug mode there's always at least 1 ICEntry (since there are always
// debug prologue/epilogue calls).
JitFrameIterator iter(cx);
MOZ_ASSERT(iter.returnAddress() == nullptr);
BaselineScript* baseline = fp->script()->baselineScript();
iter.current()->setReturnAddress(baseline->returnAddressForIC(baseline->icEntry(0)));
if (!Debugger::handleBaselineOsr(cx, fp, this))
return false;
setIsDebuggee();
}
return true;
}
bool
BaselineFrame::initForOsr(InterpreterFrame *fp, uint32_t numStackValues)
{
mozilla::PodZero(this);
scopeChain_ = fp->scopeChain();
if (fp->hasCallObjUnchecked())
flags_ |= BaselineFrame::HAS_CALL_OBJ;
if (fp->isEvalFrame()) {
flags_ |= BaselineFrame::EVAL;
evalScript_ = fp->script();
}
if (fp->script()->needsArgsObj() && fp->hasArgsObj()) {
flags_ |= BaselineFrame::HAS_ARGS_OBJ;
argsObj_ = &fp->argsObj();
}
if (fp->hasReturnValue())
setReturnValue(fp->returnValue());
// If the interpreter pushed an SPS frame when it entered the function, the
// interpreter will pop it after the OSR trampoline returns. In order for
// the Baseline frame to have its SPS flag set, it must have its own SPS
// frame, which the Baseline code will pop on return. Note that the
// profiler may have been enabled or disabled after the function was entered
// but before OSR.
JSContext *cx = GetJSContextFromJitCode();
SPSProfiler *p = &(cx->runtime()->spsProfiler);
if (p->enabled()) {
p->enter(fp->script(), fp->maybeFun());
flags_ |= BaselineFrame::HAS_PUSHED_SPS_FRAME;
}
frameSize_ = BaselineFrame::FramePointerOffset +
BaselineFrame::Size() +
numStackValues * sizeof(Value);
MOZ_ASSERT(numValueSlots() == numStackValues);
for (uint32_t i = 0; i < numStackValues; i++)
*valueSlot(i) = fp->slots()[i];
if (cx->compartment()->debugMode()) {
// In debug mode, update any Debugger.Frame objects for the
// InterpreterFrame to point to the BaselineFrame.
// The caller pushed a fake return address. ScriptFrameIter, used by the
// debugger, wants a valid return address, but it's okay to just pick one.
// In debug mode there's always at least 1 ICEntry (since there are always
// debug prologue/epilogue calls).
JitFrameIterator iter(cx);
MOZ_ASSERT(iter.returnAddress() == nullptr);
BaselineScript *baseline = fp->script()->baselineScript();
iter.current()->setReturnAddress(baseline->returnAddressForIC(baseline->icEntry(0)));
if (!Debugger::handleBaselineOsr(cx, fp, this))
return false;
}
return true;
}
