src/cpu/s390/vm/templateInterpreterGenerator_s390.cpp

rev 12487 : 8172049: [s390] Implement "JEP 270: Reserved Stack Areas for Critical Sections".
Reviewed-by: mdoerr

*** 1114,1129 ****
               frame::z_top_ijava_frame_abi_size +
                 frame::z_ijava_state_size +
                 frame::interpreter_frame_monitor_size() * wordSize,
               max_stack);
  
!   // Check if there's room for the new frame...
    Register frame_size = max_stack; // Reuse the regiser for max_stack.
    __ z_lgr(frame_size, Z_SP);
    __ z_sgr(frame_size, sp_after_resize);
    __ z_agr(frame_size, top_frame_size);
    generate_stack_overflow_check(frame_size, fp/*tmp1*/);
  
    DEBUG_ONLY(__ z_cg(Z_R14, _z_abi16(return_pc), Z_SP));
    __ asm_assert_eq("killed Z_R14", 0);
    __ resize_frame_absolute(sp_after_resize, fp, true);
    __ save_return_pc(Z_R14);
--- 1114,1134 ----
               frame::z_top_ijava_frame_abi_size +
               frame::z_ijava_state_size +
               frame::interpreter_frame_monitor_size() * wordSize,
               max_stack);
  
!   if (!native_call) {
!     // Stack overflow check.
!     // Native calls don't need the stack size check since they have no
!     // expression stack and the arguments are already on the stack and
!     // we only add a handful of words to the stack.
      Register frame_size = max_stack; // Reuse the regiser for max_stack.
      __ z_lgr(frame_size, Z_SP);
      __ z_sgr(frame_size, sp_after_resize);
      __ z_agr(frame_size, top_frame_size);
      generate_stack_overflow_check(frame_size, fp/*tmp1*/);
+   }
  
    DEBUG_ONLY(__ z_cg(Z_R14, _z_abi16(return_pc), Z_SP));
    __ asm_assert_eq("killed Z_R14", 0);
    __ resize_frame_absolute(sp_after_resize, fp, true);
    __ save_return_pc(Z_R14);