/**
* Wrapper to save/restore volatile registers when a class needs to be dynamically
* loaded/resolved/etc.
*/
@Interruptible
public static void OPT_resolve() throws NoClassDefFoundError {
VM.disableGC();
// (1) Get the compiled method & compilerInfo for the (opt)
// compiled method that called OPT_resolve
LocalAddress fp = VM_Magic.getCallerFramePointer(VM_Magic.getFramePointer());
int cmid = VM_Magic.getCompiledMethodID(fp);
VM_OptCompiledMethod cm = (VM_OptCompiledMethod) VM_CompiledMethods.getCompiledMethod(cmid);
// (2) Get the return address
LocalAddress ip = VM_Magic.getReturnAddress(VM_Magic.getFramePointer());
Offset offset = cm.getInstructionOffset(ip);
VM.enableGC();
// (3) Call the routine in VM_OptLinker that does all the real work.
VM_OptLinker.resolveDynamicLink(cm, offset);
}
/** OSR invalidation being initiated. */
@Entrypoint
public static void OPT_yieldpointFromOsrOpt() {
LocalAddress fp = VM_Magic.getFramePointer();
VM_Processor.getCurrentProcessor().yieldToOSRRequested = true;
VM_GreenThread.yieldpoint(VM_Thread.OSROPT, fp);
}
/**
* Handle timer interrupt taken on loop backedge. This method is identical to the
* yieldpointFromBackedge() method used method used by the baseline compiler, except in the OPT
* compiler world, we also save the volatile registers.
*/
@Entrypoint
public static void OPT_yieldpointFromBackedge() {
LocalAddress fp = VM_Magic.getFramePointer();
VM_GreenThread.yieldpoint(VM_Thread.BACKEDGE, fp);
}
/**
* Handle timer interrupt taken in method epilogue. This method is identical to the
* yieldpointFromEpilogue() method used by the baseline compiler, except in the OPT compiler
* world, we also save the volatile registers.
*/
@Entrypoint
public static void OPT_yieldpointFromEpilogue() {
LocalAddress fp = VM_Magic.getFramePointer();
VM_GreenThread.yieldpoint(VM_Thread.EPILOGUE, fp);
}