示例#1
0
void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) {
  if (!TraceMethodHandles) return;

  BLOCK_COMMENT("trace_method_handle {");

  int nbytes_save = 10 * 8;             // 10 volatile gprs
  __ save_LR_CR(R0);
  __ mr(R0, R1_SP);                     // saved_sp
  assert(Assembler::is_simm(-nbytes_save, 16), "Overwriting R0");
  // Push_frame_reg_args only uses R0 if nbytes_save is wider than 16 bit.
  __ push_frame_reg_args(nbytes_save, R0);
  __ save_volatile_gprs(R1_SP, frame::abi_reg_args_size); // Except R0.

  __ load_const(R3_ARG1, (address)adaptername);
  __ mr(R4_ARG2, R23_method_handle);
  __ mr(R5_ARG3, R0);        // saved_sp
  __ mr(R6_ARG4, R1_SP);
  __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub));

  __ restore_volatile_gprs(R1_SP, 112); // Except R0.
  __ pop_frame();
  __ restore_LR_CR(R0);

  BLOCK_COMMENT("} trace_method_handle");
}
示例#2
0
// Abstract method entry.
//
address InterpreterGenerator::generate_abstract_entry(void) {
  address entry = __ pc();

  //
  // Registers alive
  //   R16_thread     - JavaThread*
  //   R19_method     - callee's method (method to be invoked)
  //   R1_SP          - SP prepared such that caller's outgoing args are near top
  //   LR             - return address to caller
  //
  // Stack layout at this point:
  //
  //   0       [TOP_IJAVA_FRAME_ABI]         <-- R1_SP
  //           alignment (optional)
  //           [outgoing Java arguments]
  //           ...
  //   PARENT  [PARENT_IJAVA_FRAME_ABI]
  //            ...
  //

  // Can't use call_VM here because we have not set up a new
  // interpreter state. Make the call to the vm and make it look like
  // our caller set up the JavaFrameAnchor.
  __ set_top_ijava_frame_at_SP_as_last_Java_frame(R1_SP, R12_scratch2/*tmp*/);

  // Push a new C frame and save LR.
  __ save_LR_CR(R0);
  __ push_frame_reg_args(0, R11_scratch1);

  // This is not a leaf but we have a JavaFrameAnchor now and we will
  // check (create) exceptions afterward so this is ok.
  __ call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError),
                  R16_thread);

  // Pop the C frame and restore LR.
  __ pop_frame();
  __ restore_LR_CR(R0);

  // Reset JavaFrameAnchor from call_VM_leaf above.
  __ reset_last_Java_frame();

#ifdef CC_INTERP
  // Return to frame manager, it will handle the pending exception.
  __ blr();
#else
  // We don't know our caller, so jump to the general forward exception stub,
  // which will also pop our full frame off. Satisfy the interface of
  // SharedRuntime::generate_forward_exception()
  __ load_const_optimized(R11_scratch1, StubRoutines::forward_exception_entry(), R0);
  __ mtctr(R11_scratch1);
  __ bctr();
#endif

  return entry;
}
示例#3
0
void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) {
  if (!TraceMethodHandles) return;

  BLOCK_COMMENT("trace_method_handle {");

  const Register tmp = R11; // Will be preserved.
  const int nbytes_save = 11*8; // volatile gprs except R0
  __ save_volatile_gprs(R1_SP, -nbytes_save); // except R0
  __ save_LR_CR(tmp); // save in old frame

  __ mr(R5_ARG3, R1_SP);     // saved_sp
  __ push_frame_reg_args(nbytes_save, tmp);

  __ load_const_optimized(R3_ARG1, (address)adaptername, tmp);
  __ mr(R4_ARG2, R23_method_handle);
  __ mr(R6_ARG4, R1_SP);
  __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub));

  __ pop_frame();
  __ restore_LR_CR(tmp);
  __ restore_volatile_gprs(R1_SP, -nbytes_save); // except R0

  BLOCK_COMMENT("} trace_method_handle");
}