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src/hotspot/cpu/aarch64/stubGenerator_aarch64.cpp

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  311     __ mov(r19_sender_sp, sp);
  312     __ blr(c_rarg4);
  313 
  314     // we do this here because the notify will already have been done
  315     // if we get to the next instruction via an exception
  316     //
  317     // n.b. adding this instruction here affects the calculation of
  318     // whether or not a routine returns to the call stub (used when
  319     // doing stack walks) since the normal test is to check the return
  320     // pc against the address saved below. so we may need to allow for
  321     // this extra instruction in the check.
  322 
  323     // save current address for use by exception handling code
  324 
  325     return_address = __ pc();
  326 
  327     // store result depending on type (everything that is not
  328     // T_OBJECT, T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT)
  329     // n.b. this assumes Java returns an integral result in r0
  330     // and a floating result in j_farg0
  331     __ ldr(j_rarg2, result);
  332     Label is_long, is_float, is_double, exit;
  333     __ ldr(j_rarg1, result_type);
  334     __ cmp(j_rarg1, (u1)T_OBJECT);







  335     __ br(Assembler::EQ, is_long);
  336     __ cmp(j_rarg1, (u1)T_LONG);
  337     __ br(Assembler::EQ, is_long);
  338     __ cmp(j_rarg1, (u1)T_FLOAT);
  339     __ br(Assembler::EQ, is_float);
  340     __ cmp(j_rarg1, (u1)T_DOUBLE);
  341     __ br(Assembler::EQ, is_double);
  342 
  343     // handle T_INT case
  344     __ strw(r0, Address(j_rarg2));
  345 
  346     __ BIND(exit);
  347 
  348     // pop parameters
  349     __ sub(esp, rfp, -sp_after_call_off * wordSize);
  350 
  351 #ifdef ASSERT
  352     // verify that threads correspond
  353     {
  354       Label L, S;
  355       __ ldr(rscratch1, thread);
  356       __ cmp(rthread, rscratch1);
  357       __ br(Assembler::NE, S);
  358       __ get_thread(rscratch1);
  359       __ cmp(rthread, rscratch1);
  360       __ br(Assembler::EQ, L);
  361       __ BIND(S);
  362       __ stop("StubRoutines::call_stub: threads must correspond");
  363       __ BIND(L);
  364     }

  376     __ ldp(r26, r25,   r26_save);
  377     __ ldp(r24, r23,   r24_save);
  378     __ ldp(r22, r21,   r22_save);
  379     __ ldp(r20, r19,   r20_save);
  380 
  381     // restore fpcr
  382     __ ldr(rscratch1,  fpcr_save);
  383     __ set_fpcr(rscratch1);
  384 
  385     __ ldp(c_rarg0, c_rarg1,  call_wrapper);
  386     __ ldrw(c_rarg2, result_type);
  387     __ ldr(c_rarg3,  method);
  388     __ ldp(c_rarg4, c_rarg5,  entry_point);
  389     __ ldp(c_rarg6, c_rarg7,  parameter_size);
  390 
  391     // leave frame and return to caller
  392     __ leave();
  393     __ ret(lr);
  394 
  395     // handle return types different from T_INT











  396 
  397     __ BIND(is_long);
  398     __ str(r0, Address(j_rarg2, 0));
  399     __ br(Assembler::AL, exit);
  400 
  401     __ BIND(is_float);
  402     __ strs(j_farg0, Address(j_rarg2, 0));
  403     __ br(Assembler::AL, exit);
  404 
  405     __ BIND(is_double);
  406     __ strd(j_farg0, Address(j_rarg2, 0));
  407     __ br(Assembler::AL, exit);
  408 
  409     return start;
  410   }
  411 
  412   // Return point for a Java call if there's an exception thrown in
  413   // Java code.  The exception is caught and transformed into a
  414   // pending exception stored in JavaThread that can be tested from
  415   // within the VM.
  416   //
  417   // Note: Usually the parameters are removed by the callee. In case
  418   // of an exception crossing an activation frame boundary, that is
  419   // not the case if the callee is compiled code => need to setup the
  420   // rsp.
  421   //
  422   // r0: exception oop
  423 
  424   address generate_catch_exception() {
  425     StubGenStubId stub_id = StubGenStubId::catch_exception_id;
  426     StubCodeMark mark(this, stub_id);

 2207     //  |array_tag|     | header_size | element_type |     |log2_element_size|
 2208     // 32        30    24            16              8     2                 0
 2209     //
 2210     //   array_tag: typeArray = 0x3, objArray = 0x2, non-array = 0x0
 2211     //
 2212 
 2213     const int lh_offset = in_bytes(Klass::layout_helper_offset());
 2214 
 2215     // Handle objArrays completely differently...
 2216     const jint objArray_lh = Klass::array_layout_helper(T_OBJECT);
 2217     __ ldrw(lh, Address(scratch_src_klass, lh_offset));
 2218     __ movw(rscratch1, objArray_lh);
 2219     __ eorw(rscratch2, lh, rscratch1);
 2220     __ cbzw(rscratch2, L_objArray);
 2221 
 2222     //  if (src->klass() != dst->klass()) return -1;
 2223     __ load_klass(rscratch2, dst);
 2224     __ eor(rscratch2, rscratch2, scratch_src_klass);
 2225     __ cbnz(rscratch2, L_failed);
 2226 






 2227     //  if (!src->is_Array()) return -1;
 2228     __ tbz(lh, 31, L_failed);  // i.e. (lh >= 0)
 2229 
 2230     // At this point, it is known to be a typeArray (array_tag 0x3).
 2231 #ifdef ASSERT
 2232     {
 2233       BLOCK_COMMENT("assert primitive array {");
 2234       Label L;
 2235       __ movw(rscratch2, Klass::_lh_array_tag_type_value << Klass::_lh_array_tag_shift);
 2236       __ cmpw(lh, rscratch2);
 2237       __ br(Assembler::GE, L);
 2238       __ stop("must be a primitive array");
 2239       __ bind(L);
 2240       BLOCK_COMMENT("} assert primitive array done");
 2241     }
 2242 #endif
 2243 
 2244     arraycopy_range_checks(src, src_pos, dst, dst_pos, scratch_length,
 2245                            rscratch2, L_failed);
 2246 

11149     //       assert(Ra == Pa_base[j], "must be");
11150     //       MACC(Ra, Ra, t0, t1, t2);
11151     //     }
11152     //     iters =  (2*len-i)/2;
11153     //     assert(iters == len-j, "must be");
11154     //     for (; iters--; j++) {
11155     //       assert(Rm == Pm_base[j] && Rn == Pn_base[i-j], "must be");
11156     //       MACC(Rm, Rn, t0, t1, t2);
11157     //       Rm = *++Pm;
11158     //       Rn = *--Pn;
11159     //     }
11160     //     Pm_base[i-len] = t0;
11161     //     t0 = t1; t1 = t2; t2 = 0;
11162     //   }
11163 
11164     //   while (t0)
11165     //     t0 = sub(Pm_base, Pn_base, t0, len);
11166     // }
11167   };
11168 
































































































































11169   // Initialization
11170   void generate_initial_stubs() {
11171     // Generate initial stubs and initializes the entry points
11172 
11173     // entry points that exist in all platforms Note: This is code
11174     // that could be shared among different platforms - however the
11175     // benefit seems to be smaller than the disadvantage of having a
11176     // much more complicated generator structure. See also comment in
11177     // stubRoutines.hpp.
11178 
11179     StubRoutines::_forward_exception_entry = generate_forward_exception();
11180 
11181     StubRoutines::_call_stub_entry =
11182       generate_call_stub(StubRoutines::_call_stub_return_address);
11183 
11184     // is referenced by megamorphic call
11185     StubRoutines::_catch_exception_entry = generate_catch_exception();
11186 
11187     // Initialize table for copy memory (arraycopy) check.
11188     if (UnsafeMemoryAccess::_table == nullptr) {

11195       StubRoutines::_updateBytesCRC32 = generate_updateBytesCRC32();
11196     }
11197 
11198     if (UseCRC32CIntrinsics) {
11199       StubRoutines::_updateBytesCRC32C = generate_updateBytesCRC32C();
11200     }
11201 
11202     if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin)) {
11203       StubRoutines::_dsin = generate_dsin_dcos(/* isCos = */ false);
11204     }
11205 
11206     if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos)) {
11207       StubRoutines::_dcos = generate_dsin_dcos(/* isCos = */ true);
11208     }
11209 
11210     if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_float16ToFloat) &&
11211         vmIntrinsics::is_intrinsic_available(vmIntrinsics::_floatToFloat16)) {
11212       StubRoutines::_hf2f = generate_float16ToFloat();
11213       StubRoutines::_f2hf = generate_floatToFloat16();
11214     }








11215   }
11216 
11217   void generate_continuation_stubs() {
11218     // Continuation stubs:
11219     StubRoutines::_cont_thaw          = generate_cont_thaw();
11220     StubRoutines::_cont_returnBarrier = generate_cont_returnBarrier();
11221     StubRoutines::_cont_returnBarrierExc = generate_cont_returnBarrier_exception();
11222     StubRoutines::_cont_preempt_stub = generate_cont_preempt_stub();
11223   }
11224 
11225   void generate_final_stubs() {
11226     // support for verify_oop (must happen after universe_init)
11227     if (VerifyOops) {
11228       StubRoutines::_verify_oop_subroutine_entry   = generate_verify_oop();
11229     }
11230 
11231     // arraycopy stubs used by compilers
11232     generate_arraycopy_stubs();
11233 
11234     StubRoutines::_method_entry_barrier = generate_method_entry_barrier();

  311     __ mov(r19_sender_sp, sp);
  312     __ blr(c_rarg4);
  313 
  314     // we do this here because the notify will already have been done
  315     // if we get to the next instruction via an exception
  316     //
  317     // n.b. adding this instruction here affects the calculation of
  318     // whether or not a routine returns to the call stub (used when
  319     // doing stack walks) since the normal test is to check the return
  320     // pc against the address saved below. so we may need to allow for
  321     // this extra instruction in the check.
  322 
  323     // save current address for use by exception handling code
  324 
  325     return_address = __ pc();
  326 
  327     // store result depending on type (everything that is not
  328     // T_OBJECT, T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT)
  329     // n.b. this assumes Java returns an integral result in r0
  330     // and a floating result in j_farg0
  331     // All of j_rargN may be used to return inline type fields so be careful
  332     // not to clobber those.
  333     // SharedRuntime::generate_buffered_inline_type_adapter() knows the register
  334     // assignment of Rresult below.
  335     Register Rresult = r14, Rresult_type = r15;
  336     __ ldr(Rresult, result);
  337     Label is_long, is_float, is_double, check_prim, exit;
  338     __ ldr(Rresult_type, result_type);
  339     __ cmp(Rresult_type, (u1)T_OBJECT);
  340     __ br(Assembler::EQ, check_prim);
  341     __ cmp(Rresult_type, (u1)T_LONG);
  342     __ br(Assembler::EQ, is_long);
  343     __ cmp(Rresult_type, (u1)T_FLOAT);


  344     __ br(Assembler::EQ, is_float);
  345     __ cmp(Rresult_type, (u1)T_DOUBLE);
  346     __ br(Assembler::EQ, is_double);
  347 
  348     // handle T_INT case
  349     __ strw(r0, Address(Rresult));
  350 
  351     __ BIND(exit);
  352 
  353     // pop parameters
  354     __ sub(esp, rfp, -sp_after_call_off * wordSize);
  355 
  356 #ifdef ASSERT
  357     // verify that threads correspond
  358     {
  359       Label L, S;
  360       __ ldr(rscratch1, thread);
  361       __ cmp(rthread, rscratch1);
  362       __ br(Assembler::NE, S);
  363       __ get_thread(rscratch1);
  364       __ cmp(rthread, rscratch1);
  365       __ br(Assembler::EQ, L);
  366       __ BIND(S);
  367       __ stop("StubRoutines::call_stub: threads must correspond");
  368       __ BIND(L);
  369     }

  381     __ ldp(r26, r25,   r26_save);
  382     __ ldp(r24, r23,   r24_save);
  383     __ ldp(r22, r21,   r22_save);
  384     __ ldp(r20, r19,   r20_save);
  385 
  386     // restore fpcr
  387     __ ldr(rscratch1,  fpcr_save);
  388     __ set_fpcr(rscratch1);
  389 
  390     __ ldp(c_rarg0, c_rarg1,  call_wrapper);
  391     __ ldrw(c_rarg2, result_type);
  392     __ ldr(c_rarg3,  method);
  393     __ ldp(c_rarg4, c_rarg5,  entry_point);
  394     __ ldp(c_rarg6, c_rarg7,  parameter_size);
  395 
  396     // leave frame and return to caller
  397     __ leave();
  398     __ ret(lr);
  399 
  400     // handle return types different from T_INT
  401     __ BIND(check_prim);
  402     if (InlineTypeReturnedAsFields) {
  403       // Check for scalarized return value
  404       __ tbz(r0, 0, is_long);
  405       // Load pack handler address
  406       __ andr(rscratch1, r0, -2);
  407       __ ldr(rscratch1, Address(rscratch1, InstanceKlass::adr_inlineklass_fixed_block_offset()));
  408       __ ldr(rscratch1, Address(rscratch1, InlineKlass::pack_handler_jobject_offset()));
  409       __ blr(rscratch1);
  410       __ b(exit);
  411     }
  412 
  413     __ BIND(is_long);
  414     __ str(r0, Address(Rresult, 0));
  415     __ br(Assembler::AL, exit);
  416 
  417     __ BIND(is_float);
  418     __ strs(j_farg0, Address(Rresult, 0));
  419     __ br(Assembler::AL, exit);
  420 
  421     __ BIND(is_double);
  422     __ strd(j_farg0, Address(Rresult, 0));
  423     __ br(Assembler::AL, exit);
  424 
  425     return start;
  426   }
  427 
  428   // Return point for a Java call if there's an exception thrown in
  429   // Java code.  The exception is caught and transformed into a
  430   // pending exception stored in JavaThread that can be tested from
  431   // within the VM.
  432   //
  433   // Note: Usually the parameters are removed by the callee. In case
  434   // of an exception crossing an activation frame boundary, that is
  435   // not the case if the callee is compiled code => need to setup the
  436   // rsp.
  437   //
  438   // r0: exception oop
  439 
  440   address generate_catch_exception() {
  441     StubGenStubId stub_id = StubGenStubId::catch_exception_id;
  442     StubCodeMark mark(this, stub_id);

 2223     //  |array_tag|     | header_size | element_type |     |log2_element_size|
 2224     // 32        30    24            16              8     2                 0
 2225     //
 2226     //   array_tag: typeArray = 0x3, objArray = 0x2, non-array = 0x0
 2227     //
 2228 
 2229     const int lh_offset = in_bytes(Klass::layout_helper_offset());
 2230 
 2231     // Handle objArrays completely differently...
 2232     const jint objArray_lh = Klass::array_layout_helper(T_OBJECT);
 2233     __ ldrw(lh, Address(scratch_src_klass, lh_offset));
 2234     __ movw(rscratch1, objArray_lh);
 2235     __ eorw(rscratch2, lh, rscratch1);
 2236     __ cbzw(rscratch2, L_objArray);
 2237 
 2238     //  if (src->klass() != dst->klass()) return -1;
 2239     __ load_klass(rscratch2, dst);
 2240     __ eor(rscratch2, rscratch2, scratch_src_klass);
 2241     __ cbnz(rscratch2, L_failed);
 2242 
 2243     // Check for flat inline type array -> return -1
 2244     __ test_flat_array_oop(src, rscratch2, L_failed);
 2245 
 2246     // Check for null-free (non-flat) inline type array -> handle as object array
 2247     __ test_null_free_array_oop(src, rscratch2, L_objArray);
 2248 
 2249     //  if (!src->is_Array()) return -1;
 2250     __ tbz(lh, 31, L_failed);  // i.e. (lh >= 0)
 2251 
 2252     // At this point, it is known to be a typeArray (array_tag 0x3).
 2253 #ifdef ASSERT
 2254     {
 2255       BLOCK_COMMENT("assert primitive array {");
 2256       Label L;
 2257       __ movw(rscratch2, Klass::_lh_array_tag_type_value << Klass::_lh_array_tag_shift);
 2258       __ cmpw(lh, rscratch2);
 2259       __ br(Assembler::GE, L);
 2260       __ stop("must be a primitive array");
 2261       __ bind(L);
 2262       BLOCK_COMMENT("} assert primitive array done");
 2263     }
 2264 #endif
 2265 
 2266     arraycopy_range_checks(src, src_pos, dst, dst_pos, scratch_length,
 2267                            rscratch2, L_failed);
 2268 

11171     //       assert(Ra == Pa_base[j], "must be");
11172     //       MACC(Ra, Ra, t0, t1, t2);
11173     //     }
11174     //     iters =  (2*len-i)/2;
11175     //     assert(iters == len-j, "must be");
11176     //     for (; iters--; j++) {
11177     //       assert(Rm == Pm_base[j] && Rn == Pn_base[i-j], "must be");
11178     //       MACC(Rm, Rn, t0, t1, t2);
11179     //       Rm = *++Pm;
11180     //       Rn = *--Pn;
11181     //     }
11182     //     Pm_base[i-len] = t0;
11183     //     t0 = t1; t1 = t2; t2 = 0;
11184     //   }
11185 
11186     //   while (t0)
11187     //     t0 = sub(Pm_base, Pn_base, t0, len);
11188     // }
11189   };
11190 
11191   // Call here from the interpreter or compiled code to either load
11192   // multiple returned values from the inline type instance being
11193   // returned to registers or to store returned values to a newly
11194   // allocated inline type instance.
11195   address generate_return_value_stub(address destination, const char* name, bool has_res) {
11196     // We need to save all registers the calling convention may use so
11197     // the runtime calls read or update those registers. This needs to
11198     // be in sync with SharedRuntime::java_return_convention().
11199     // n.b. aarch64 asserts that frame::arg_reg_save_area_bytes == 0
11200     enum layout {
11201       j_rarg7_off = 0, j_rarg7_2,    // j_rarg7 is r0
11202       j_rarg6_off, j_rarg6_2,
11203       j_rarg5_off, j_rarg5_2,
11204       j_rarg4_off, j_rarg4_2,
11205       j_rarg3_off, j_rarg3_2,
11206       j_rarg2_off, j_rarg2_2,
11207       j_rarg1_off, j_rarg1_2,
11208       j_rarg0_off, j_rarg0_2,
11209 
11210       j_farg7_off, j_farg7_2,
11211       j_farg6_off, j_farg6_2,
11212       j_farg5_off, j_farg5_2,
11213       j_farg4_off, j_farg4_2,
11214       j_farg3_off, j_farg3_2,
11215       j_farg2_off, j_farg2_2,
11216       j_farg1_off, j_farg1_2,
11217       j_farg0_off, j_farg0_2,
11218 
11219       rfp_off, rfp_off2,
11220       return_off, return_off2,
11221 
11222       framesize // inclusive of return address
11223     };
11224 
11225     CodeBuffer code(name, 512, 64);
11226     MacroAssembler* masm = new MacroAssembler(&code);
11227 
11228     int frame_size_in_bytes = align_up(framesize*BytesPerInt, 16);
11229     assert(frame_size_in_bytes == framesize*BytesPerInt, "misaligned");
11230     int frame_size_in_slots = frame_size_in_bytes / BytesPerInt;
11231     int frame_size_in_words = frame_size_in_bytes / wordSize;
11232 
11233     OopMapSet* oop_maps = new OopMapSet();
11234     OopMap* map = new OopMap(frame_size_in_slots, 0);
11235 
11236     map->set_callee_saved(VMRegImpl::stack2reg(j_rarg7_off), j_rarg7->as_VMReg());
11237     map->set_callee_saved(VMRegImpl::stack2reg(j_rarg6_off), j_rarg6->as_VMReg());
11238     map->set_callee_saved(VMRegImpl::stack2reg(j_rarg5_off), j_rarg5->as_VMReg());
11239     map->set_callee_saved(VMRegImpl::stack2reg(j_rarg4_off), j_rarg4->as_VMReg());
11240     map->set_callee_saved(VMRegImpl::stack2reg(j_rarg3_off), j_rarg3->as_VMReg());
11241     map->set_callee_saved(VMRegImpl::stack2reg(j_rarg2_off), j_rarg2->as_VMReg());
11242     map->set_callee_saved(VMRegImpl::stack2reg(j_rarg1_off), j_rarg1->as_VMReg());
11243     map->set_callee_saved(VMRegImpl::stack2reg(j_rarg0_off), j_rarg0->as_VMReg());
11244 
11245     map->set_callee_saved(VMRegImpl::stack2reg(j_farg0_off), j_farg0->as_VMReg());
11246     map->set_callee_saved(VMRegImpl::stack2reg(j_farg1_off), j_farg1->as_VMReg());
11247     map->set_callee_saved(VMRegImpl::stack2reg(j_farg2_off), j_farg2->as_VMReg());
11248     map->set_callee_saved(VMRegImpl::stack2reg(j_farg3_off), j_farg3->as_VMReg());
11249     map->set_callee_saved(VMRegImpl::stack2reg(j_farg4_off), j_farg4->as_VMReg());
11250     map->set_callee_saved(VMRegImpl::stack2reg(j_farg5_off), j_farg5->as_VMReg());
11251     map->set_callee_saved(VMRegImpl::stack2reg(j_farg6_off), j_farg6->as_VMReg());
11252     map->set_callee_saved(VMRegImpl::stack2reg(j_farg7_off), j_farg7->as_VMReg());
11253 
11254     address start = __ pc();
11255 
11256     __ enter(); // Save FP and LR before call
11257 
11258     __ stpd(j_farg1, j_farg0, Address(__ pre(sp, -2 * wordSize)));
11259     __ stpd(j_farg3, j_farg2, Address(__ pre(sp, -2 * wordSize)));
11260     __ stpd(j_farg5, j_farg4, Address(__ pre(sp, -2 * wordSize)));
11261     __ stpd(j_farg7, j_farg6, Address(__ pre(sp, -2 * wordSize)));
11262 
11263     __ stp(j_rarg1, j_rarg0, Address(__ pre(sp, -2 * wordSize)));
11264     __ stp(j_rarg3, j_rarg2, Address(__ pre(sp, -2 * wordSize)));
11265     __ stp(j_rarg5, j_rarg4, Address(__ pre(sp, -2 * wordSize)));
11266     __ stp(j_rarg7, j_rarg6, Address(__ pre(sp, -2 * wordSize)));
11267 
11268     int frame_complete = __ offset();
11269 
11270     // Set up last_Java_sp and last_Java_fp
11271     address the_pc = __ pc();
11272     __ set_last_Java_frame(sp, noreg, the_pc, rscratch1);
11273 
11274     // Call runtime
11275     __ mov(c_rarg1, r0);
11276     __ mov(c_rarg0, rthread);
11277 
11278     __ mov(rscratch1, destination);
11279     __ blr(rscratch1);
11280 
11281     oop_maps->add_gc_map(the_pc - start, map);
11282 
11283     __ reset_last_Java_frame(false);
11284 
11285     __ ldp(j_rarg7, j_rarg6, Address(__ post(sp, 2 * wordSize)));
11286     __ ldp(j_rarg5, j_rarg4, Address(__ post(sp, 2 * wordSize)));
11287     __ ldp(j_rarg3, j_rarg2, Address(__ post(sp, 2 * wordSize)));
11288     __ ldp(j_rarg1, j_rarg0, Address(__ post(sp, 2 * wordSize)));
11289 
11290     __ ldpd(j_farg7, j_farg6, Address(__ post(sp, 2 * wordSize)));
11291     __ ldpd(j_farg5, j_farg4, Address(__ post(sp, 2 * wordSize)));
11292     __ ldpd(j_farg3, j_farg2, Address(__ post(sp, 2 * wordSize)));
11293     __ ldpd(j_farg1, j_farg0, Address(__ post(sp, 2 * wordSize)));
11294 
11295     __ leave();
11296 
11297     // check for pending exceptions
11298     Label pending;
11299     __ ldr(rscratch1, Address(rthread, in_bytes(Thread::pending_exception_offset())));
11300     __ cbnz(rscratch1, pending);
11301 
11302     if (has_res) {
11303       __ get_vm_result_oop(r0, rthread);
11304     }
11305 
11306     __ ret(lr);
11307 
11308     __ bind(pending);
11309     __ far_jump(RuntimeAddress(StubRoutines::forward_exception_entry()));
11310 
11311     // -------------
11312     // make sure all code is generated
11313     masm->flush();
11314 
11315     RuntimeStub* stub = RuntimeStub::new_runtime_stub(name, &code, frame_complete, frame_size_in_words, oop_maps, false);
11316     return stub->entry_point();
11317   }
11318 
11319   // Initialization
11320   void generate_initial_stubs() {
11321     // Generate initial stubs and initializes the entry points
11322 
11323     // entry points that exist in all platforms Note: This is code
11324     // that could be shared among different platforms - however the
11325     // benefit seems to be smaller than the disadvantage of having a
11326     // much more complicated generator structure. See also comment in
11327     // stubRoutines.hpp.
11328 
11329     StubRoutines::_forward_exception_entry = generate_forward_exception();
11330 
11331     StubRoutines::_call_stub_entry =
11332       generate_call_stub(StubRoutines::_call_stub_return_address);
11333 
11334     // is referenced by megamorphic call
11335     StubRoutines::_catch_exception_entry = generate_catch_exception();
11336 
11337     // Initialize table for copy memory (arraycopy) check.
11338     if (UnsafeMemoryAccess::_table == nullptr) {

11345       StubRoutines::_updateBytesCRC32 = generate_updateBytesCRC32();
11346     }
11347 
11348     if (UseCRC32CIntrinsics) {
11349       StubRoutines::_updateBytesCRC32C = generate_updateBytesCRC32C();
11350     }
11351 
11352     if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin)) {
11353       StubRoutines::_dsin = generate_dsin_dcos(/* isCos = */ false);
11354     }
11355 
11356     if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos)) {
11357       StubRoutines::_dcos = generate_dsin_dcos(/* isCos = */ true);
11358     }
11359 
11360     if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_float16ToFloat) &&
11361         vmIntrinsics::is_intrinsic_available(vmIntrinsics::_floatToFloat16)) {
11362       StubRoutines::_hf2f = generate_float16ToFloat();
11363       StubRoutines::_f2hf = generate_floatToFloat16();
11364     }
11365 
11366     if (InlineTypeReturnedAsFields) {
11367       StubRoutines::_load_inline_type_fields_in_regs =
11368          generate_return_value_stub(CAST_FROM_FN_PTR(address, SharedRuntime::load_inline_type_fields_in_regs), "load_inline_type_fields_in_regs", false);
11369       StubRoutines::_store_inline_type_fields_to_buf =
11370          generate_return_value_stub(CAST_FROM_FN_PTR(address, SharedRuntime::store_inline_type_fields_to_buf), "store_inline_type_fields_to_buf", true);
11371     }
11372 
11373   }
11374 
11375   void generate_continuation_stubs() {
11376     // Continuation stubs:
11377     StubRoutines::_cont_thaw          = generate_cont_thaw();
11378     StubRoutines::_cont_returnBarrier = generate_cont_returnBarrier();
11379     StubRoutines::_cont_returnBarrierExc = generate_cont_returnBarrier_exception();
11380     StubRoutines::_cont_preempt_stub = generate_cont_preempt_stub();
11381   }
11382 
11383   void generate_final_stubs() {
11384     // support for verify_oop (must happen after universe_init)
11385     if (VerifyOops) {
11386       StubRoutines::_verify_oop_subroutine_entry   = generate_verify_oop();
11387     }
11388 
11389     // arraycopy stubs used by compilers
11390     generate_arraycopy_stubs();
11391 
11392     StubRoutines::_method_entry_barrier = generate_method_entry_barrier();
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