8306111: PPC64: RT call after thaw with exception requires larger ABI…

… section

Reviewed-by: mdoerr

src/hotspot/cpu/ppc/globals_ppc.hpp

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2002, 2023, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012, 2020 SAP SE. All rights reserved.
+ * Copyright (c) 2012, 2023 SAP SE. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -56,7 +56,7 @@ define_pd_global(intx, StackRedPages,         DEFAULT_STACK_RED_PAGES);
 define_pd_global(intx, StackShadowPages,      DEFAULT_STACK_SHADOW_PAGES);
 define_pd_global(intx, StackReservedPages,    DEFAULT_STACK_RESERVED_PAGES);
 
-define_pd_global(bool,  VMContinuations, true BIG_ENDIAN_ONLY(&& false));
+define_pd_global(bool,  VMContinuations, true);
 
 // Use large code-entry alignment.
 define_pd_global(uintx, CodeCacheSegmentSize,  128);

src/hotspot/cpu/ppc/stubGenerator_ppc.cpp

@@ -4576,8 +4576,11 @@ class StubGenerator: public StubCodeGenerator {
       Register ex_pc = R17_tos;   // nonvolatile register
       __ ld(ex_pc, _abi0(lr), R1_SP); // LR
       __ mr(nvtmp, R3_RET); // save return value containing the exception oop
+      // The thawed top frame has got a frame::java_abi. This is not sufficient for the runtime call.
+      __ push_frame_reg_args(0, tmp1);
       __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), R16_thread, ex_pc);
       __ mtlr(R3_RET); // the exception handler
+      __ pop_frame();
       // See OptoRuntime::generate_exception_blob for register arguments
       __ mr(R3_ARG1, nvtmp); // exception oop
       __ mr(R4_ARG2, ex_pc); // exception pc