bool
IonFrameIterator::checkInvalidation(IonScript **ionScriptOut) const
{
AutoAssertNoGC nogc;
// Currently, this code only executes in sequential execution.
CompileMode compileMode = COMPILE_MODE_SEQ;
uint8 *returnAddr = returnAddressToFp();
RawScript script = this->script();
// N.B. the current IonScript is not the same as the frame's
// IonScript if the frame has since been invalidated.
IonScript *currentIonScript = script->ions[compileMode];
bool invalidated = !script->hasIonScript(compileMode) ||
!currentIonScript->containsReturnAddress(returnAddr);
if (!invalidated)
return false;
int32 invalidationDataOffset = ((int32 *) returnAddr)[-1];
uint8 *ionScriptDataOffset = returnAddr + invalidationDataOffset;
IonScript *ionScript = (IonScript *) Assembler::getPointer(ionScriptDataOffset);
JS_ASSERT(ionScript->containsReturnAddress(returnAddr));
*ionScriptOut = ionScript;
return true;
}
bool
IonFrameIterator::checkInvalidation(IonScript **ionScriptOut) const
{
AutoAssertNoGC nogc;
uint8_t *returnAddr = returnAddressToFp();
RawScript script = this->script();
// N.B. the current IonScript is not the same as the frame's
// IonScript if the frame has since been invalidated.
IonScript *currentIonScript = script->ion;
bool invalidated = !script->hasIonScript() ||
!currentIonScript->containsReturnAddress(returnAddr);
if (!invalidated)
return false;
int32_t invalidationDataOffset = ((int32_t *) returnAddr)[-1];
uint8_t *ionScriptDataOffset = returnAddr + invalidationDataOffset;
IonScript *ionScript = (IonScript *) Assembler::getPointer(ionScriptDataOffset);
JS_ASSERT(ionScript->containsReturnAddress(returnAddr));
*ionScriptOut = ionScript;
return true;
}