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src/hotspot/cpu/aarch64/stubGenerator_aarch64.cpp

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 308     __ mov(r19_sender_sp, sp);
 309     __ blr(c_rarg4);
 310 
 311     // we do this here because the notify will already have been done
 312     // if we get to the next instruction via an exception
 313     //
 314     // n.b. adding this instruction here affects the calculation of
 315     // whether or not a routine returns to the call stub (used when
 316     // doing stack walks) since the normal test is to check the return
 317     // pc against the address saved below. so we may need to allow for
 318     // this extra instruction in the check.
 319 
 320     // save current address for use by exception handling code
 321 
 322     return_address = __ pc();
 323 
 324     // store result depending on type (everything that is not
 325     // T_OBJECT, T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT)
 326     // n.b. this assumes Java returns an integral result in r0
 327     // and a floating result in j_farg0
 328     __ ldr(j_rarg2, result);
 329     Label is_long, is_float, is_double, exit;
 330     __ ldr(j_rarg1, result_type);
 331     __ cmp(j_rarg1, (u1)T_OBJECT);







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

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











 393 
 394     __ BIND(is_long);
 395     __ str(r0, Address(j_rarg2, 0));
 396     __ br(Assembler::AL, exit);
 397 
 398     __ BIND(is_float);
 399     __ strs(j_farg0, Address(j_rarg2, 0));
 400     __ br(Assembler::AL, exit);
 401 
 402     __ BIND(is_double);
 403     __ strd(j_farg0, Address(j_rarg2, 0));
 404     __ br(Assembler::AL, exit);
 405 
 406     return start;
 407   }
 408 
 409   // Return point for a Java call if there's an exception thrown in
 410   // Java code.  The exception is caught and transformed into a
 411   // pending exception stored in JavaThread that can be tested from
 412   // within the VM.
 413   //
 414   // Note: Usually the parameters are removed by the callee. In case
 415   // of an exception crossing an activation frame boundary, that is
 416   // not the case if the callee is compiled code => need to setup the
 417   // rsp.
 418   //
 419   // r0: exception oop
 420 
 421   address generate_catch_exception() {
 422     StubCodeMark mark(this, "StubRoutines", "catch_exception");
 423     address start = __ pc();

2196     //  |array_tag|     | header_size | element_type |     |log2_element_size|
2197     // 32        30    24            16              8     2                 0
2198     //
2199     //   array_tag: typeArray = 0x3, objArray = 0x2, non-array = 0x0
2200     //
2201 
2202     const int lh_offset = in_bytes(Klass::layout_helper_offset());
2203 
2204     // Handle objArrays completely differently...
2205     const jint objArray_lh = Klass::array_layout_helper(T_OBJECT);
2206     __ ldrw(lh, Address(scratch_src_klass, lh_offset));
2207     __ movw(rscratch1, objArray_lh);
2208     __ eorw(rscratch2, lh, rscratch1);
2209     __ cbzw(rscratch2, L_objArray);
2210 
2211     //  if (src->klass() != dst->klass()) return -1;
2212     __ load_klass(rscratch2, dst);
2213     __ eor(rscratch2, rscratch2, scratch_src_klass);
2214     __ cbnz(rscratch2, L_failed);
2215 






2216     //  if (!src->is_Array()) return -1;
2217     __ tbz(lh, 31, L_failed);  // i.e. (lh >= 0)
2218 
2219     // At this point, it is known to be a typeArray (array_tag 0x3).
2220 #ifdef ASSERT
2221     {
2222       BLOCK_COMMENT("assert primitive array {");
2223       Label L;
2224       __ movw(rscratch2, Klass::_lh_array_tag_type_value << Klass::_lh_array_tag_shift);
2225       __ cmpw(lh, rscratch2);
2226       __ br(Assembler::GE, L);
2227       __ stop("must be a primitive array");
2228       __ bind(L);
2229       BLOCK_COMMENT("} assert primitive array done");
2230     }
2231 #endif
2232 
2233     arraycopy_range_checks(src, src_pos, dst, dst_pos, scratch_length,
2234                            rscratch2, L_failed);
2235 

8152     //       MACC(Ra, Ra, t0, t1, t2);
8153     //     }
8154     //     iters =  (2*len-i)/2;
8155     //     assert(iters == len-j, "must be");
8156     //     for (; iters--; j++) {
8157     //       assert(Rm == Pm_base[j] && Rn == Pn_base[i-j], "must be");
8158     //       MACC(Rm, Rn, t0, t1, t2);
8159     //       Rm = *++Pm;
8160     //       Rn = *--Pn;
8161     //     }
8162     //     Pm_base[i-len] = t0;
8163     //     t0 = t1; t1 = t2; t2 = 0;
8164     //   }
8165 
8166     //   while (t0)
8167     //     t0 = sub(Pm_base, Pn_base, t0, len);
8168     // }
8169   };
8170 
8171 
































































































































8172   // Initialization
8173   void generate_initial_stubs() {
8174     // Generate initial stubs and initializes the entry points
8175 
8176     // entry points that exist in all platforms Note: This is code
8177     // that could be shared among different platforms - however the
8178     // benefit seems to be smaller than the disadvantage of having a
8179     // much more complicated generator structure. See also comment in
8180     // stubRoutines.hpp.
8181 
8182     StubRoutines::_forward_exception_entry = generate_forward_exception();
8183 
8184     StubRoutines::_call_stub_entry =
8185       generate_call_stub(StubRoutines::_call_stub_return_address);
8186 
8187     // is referenced by megamorphic call
8188     StubRoutines::_catch_exception_entry = generate_catch_exception();
8189 
8190     // Initialize table for copy memory (arraycopy) check.
8191     if (UnsafeMemoryAccess::_table == nullptr) {

8198       StubRoutines::_updateBytesCRC32 = generate_updateBytesCRC32();
8199     }
8200 
8201     if (UseCRC32CIntrinsics) {
8202       StubRoutines::_updateBytesCRC32C = generate_updateBytesCRC32C();
8203     }
8204 
8205     if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin)) {
8206       StubRoutines::_dsin = generate_dsin_dcos(/* isCos = */ false);
8207     }
8208 
8209     if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos)) {
8210       StubRoutines::_dcos = generate_dsin_dcos(/* isCos = */ true);
8211     }
8212 
8213     if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_float16ToFloat) &&
8214         vmIntrinsics::is_intrinsic_available(vmIntrinsics::_floatToFloat16)) {
8215       StubRoutines::_hf2f = generate_float16ToFloat();
8216       StubRoutines::_f2hf = generate_floatToFloat16();
8217     }








8218   }
8219 
8220   void generate_continuation_stubs() {
8221     // Continuation stubs:
8222     StubRoutines::_cont_thaw          = generate_cont_thaw();
8223     StubRoutines::_cont_returnBarrier = generate_cont_returnBarrier();
8224     StubRoutines::_cont_returnBarrierExc = generate_cont_returnBarrier_exception();
8225   }
8226 
8227   void generate_final_stubs() {
8228     // support for verify_oop (must happen after universe_init)
8229     if (VerifyOops) {
8230       StubRoutines::_verify_oop_subroutine_entry   = generate_verify_oop();
8231     }
8232 
8233     // arraycopy stubs used by compilers
8234     generate_arraycopy_stubs();
8235 
8236     BarrierSetNMethod* bs_nm = BarrierSet::barrier_set()->barrier_set_nmethod();
8237     if (bs_nm != nullptr) {

 308     __ mov(r19_sender_sp, sp);
 309     __ blr(c_rarg4);
 310 
 311     // we do this here because the notify will already have been done
 312     // if we get to the next instruction via an exception
 313     //
 314     // n.b. adding this instruction here affects the calculation of
 315     // whether or not a routine returns to the call stub (used when
 316     // doing stack walks) since the normal test is to check the return
 317     // pc against the address saved below. so we may need to allow for
 318     // this extra instruction in the check.
 319 
 320     // save current address for use by exception handling code
 321 
 322     return_address = __ pc();
 323 
 324     // store result depending on type (everything that is not
 325     // T_OBJECT, T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT)
 326     // n.b. this assumes Java returns an integral result in r0
 327     // and a floating result in j_farg0
 328     // All of j_rargN may be used to return inline type fields so be careful
 329     // not to clobber those.
 330     // SharedRuntime::generate_buffered_inline_type_adapter() knows the register
 331     // assignment of Rresult below.
 332     Register Rresult = r14, Rresult_type = r15;
 333     __ ldr(Rresult, result);
 334     Label is_long, is_float, is_double, check_prim, exit;
 335     __ ldr(Rresult_type, result_type);
 336     __ cmp(Rresult_type, (u1)T_OBJECT);
 337     __ br(Assembler::EQ, check_prim);
 338     __ cmp(Rresult_type, (u1)T_LONG);
 339     __ br(Assembler::EQ, is_long);
 340     __ cmp(Rresult_type, (u1)T_FLOAT);


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

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

2212     //  |array_tag|     | header_size | element_type |     |log2_element_size|
2213     // 32        30    24            16              8     2                 0
2214     //
2215     //   array_tag: typeArray = 0x3, objArray = 0x2, non-array = 0x0
2216     //
2217 
2218     const int lh_offset = in_bytes(Klass::layout_helper_offset());
2219 
2220     // Handle objArrays completely differently...
2221     const jint objArray_lh = Klass::array_layout_helper(T_OBJECT);
2222     __ ldrw(lh, Address(scratch_src_klass, lh_offset));
2223     __ movw(rscratch1, objArray_lh);
2224     __ eorw(rscratch2, lh, rscratch1);
2225     __ cbzw(rscratch2, L_objArray);
2226 
2227     //  if (src->klass() != dst->klass()) return -1;
2228     __ load_klass(rscratch2, dst);
2229     __ eor(rscratch2, rscratch2, scratch_src_klass);
2230     __ cbnz(rscratch2, L_failed);
2231 
2232     // Check for flat inline type array -> return -1
2233     __ test_flat_array_oop(src, rscratch2, L_failed);
2234 
2235     // Check for null-free (non-flat) inline type array -> handle as object array
2236     __ test_null_free_array_oop(src, rscratch2, L_objArray);
2237 
2238     //  if (!src->is_Array()) return -1;
2239     __ tbz(lh, 31, L_failed);  // i.e. (lh >= 0)
2240 
2241     // At this point, it is known to be a typeArray (array_tag 0x3).
2242 #ifdef ASSERT
2243     {
2244       BLOCK_COMMENT("assert primitive array {");
2245       Label L;
2246       __ movw(rscratch2, Klass::_lh_array_tag_type_value << Klass::_lh_array_tag_shift);
2247       __ cmpw(lh, rscratch2);
2248       __ br(Assembler::GE, L);
2249       __ stop("must be a primitive array");
2250       __ bind(L);
2251       BLOCK_COMMENT("} assert primitive array done");
2252     }
2253 #endif
2254 
2255     arraycopy_range_checks(src, src_pos, dst, dst_pos, scratch_length,
2256                            rscratch2, L_failed);
2257 

8174     //       MACC(Ra, Ra, t0, t1, t2);
8175     //     }
8176     //     iters =  (2*len-i)/2;
8177     //     assert(iters == len-j, "must be");
8178     //     for (; iters--; j++) {
8179     //       assert(Rm == Pm_base[j] && Rn == Pn_base[i-j], "must be");
8180     //       MACC(Rm, Rn, t0, t1, t2);
8181     //       Rm = *++Pm;
8182     //       Rn = *--Pn;
8183     //     }
8184     //     Pm_base[i-len] = t0;
8185     //     t0 = t1; t1 = t2; t2 = 0;
8186     //   }
8187 
8188     //   while (t0)
8189     //     t0 = sub(Pm_base, Pn_base, t0, len);
8190     // }
8191   };
8192 
8193 
8194   // Call here from the interpreter or compiled code to either load
8195   // multiple returned values from the inline type instance being
8196   // returned to registers or to store returned values to a newly
8197   // allocated inline type instance.
8198   address generate_return_value_stub(address destination, const char* name, bool has_res) {
8199     // We need to save all registers the calling convention may use so
8200     // the runtime calls read or update those registers. This needs to
8201     // be in sync with SharedRuntime::java_return_convention().
8202     // n.b. aarch64 asserts that frame::arg_reg_save_area_bytes == 0
8203     enum layout {
8204       j_rarg7_off = 0, j_rarg7_2,    // j_rarg7 is r0
8205       j_rarg6_off, j_rarg6_2,
8206       j_rarg5_off, j_rarg5_2,
8207       j_rarg4_off, j_rarg4_2,
8208       j_rarg3_off, j_rarg3_2,
8209       j_rarg2_off, j_rarg2_2,
8210       j_rarg1_off, j_rarg1_2,
8211       j_rarg0_off, j_rarg0_2,
8212 
8213       j_farg7_off, j_farg7_2,
8214       j_farg6_off, j_farg6_2,
8215       j_farg5_off, j_farg5_2,
8216       j_farg4_off, j_farg4_2,
8217       j_farg3_off, j_farg3_2,
8218       j_farg2_off, j_farg2_2,
8219       j_farg1_off, j_farg1_2,
8220       j_farg0_off, j_farg0_2,
8221 
8222       rfp_off, rfp_off2,
8223       return_off, return_off2,
8224 
8225       framesize // inclusive of return address
8226     };
8227 
8228     CodeBuffer code(name, 512, 64);
8229     MacroAssembler* masm = new MacroAssembler(&code);
8230 
8231     int frame_size_in_bytes = align_up(framesize*BytesPerInt, 16);
8232     assert(frame_size_in_bytes == framesize*BytesPerInt, "misaligned");
8233     int frame_size_in_slots = frame_size_in_bytes / BytesPerInt;
8234     int frame_size_in_words = frame_size_in_bytes / wordSize;
8235 
8236     OopMapSet* oop_maps = new OopMapSet();
8237     OopMap* map = new OopMap(frame_size_in_slots, 0);
8238 
8239     map->set_callee_saved(VMRegImpl::stack2reg(j_rarg7_off), j_rarg7->as_VMReg());
8240     map->set_callee_saved(VMRegImpl::stack2reg(j_rarg6_off), j_rarg6->as_VMReg());
8241     map->set_callee_saved(VMRegImpl::stack2reg(j_rarg5_off), j_rarg5->as_VMReg());
8242     map->set_callee_saved(VMRegImpl::stack2reg(j_rarg4_off), j_rarg4->as_VMReg());
8243     map->set_callee_saved(VMRegImpl::stack2reg(j_rarg3_off), j_rarg3->as_VMReg());
8244     map->set_callee_saved(VMRegImpl::stack2reg(j_rarg2_off), j_rarg2->as_VMReg());
8245     map->set_callee_saved(VMRegImpl::stack2reg(j_rarg1_off), j_rarg1->as_VMReg());
8246     map->set_callee_saved(VMRegImpl::stack2reg(j_rarg0_off), j_rarg0->as_VMReg());
8247 
8248     map->set_callee_saved(VMRegImpl::stack2reg(j_farg0_off), j_farg0->as_VMReg());
8249     map->set_callee_saved(VMRegImpl::stack2reg(j_farg1_off), j_farg1->as_VMReg());
8250     map->set_callee_saved(VMRegImpl::stack2reg(j_farg2_off), j_farg2->as_VMReg());
8251     map->set_callee_saved(VMRegImpl::stack2reg(j_farg3_off), j_farg3->as_VMReg());
8252     map->set_callee_saved(VMRegImpl::stack2reg(j_farg4_off), j_farg4->as_VMReg());
8253     map->set_callee_saved(VMRegImpl::stack2reg(j_farg5_off), j_farg5->as_VMReg());
8254     map->set_callee_saved(VMRegImpl::stack2reg(j_farg6_off), j_farg6->as_VMReg());
8255     map->set_callee_saved(VMRegImpl::stack2reg(j_farg7_off), j_farg7->as_VMReg());
8256 
8257     address start = __ pc();
8258 
8259     __ enter(); // Save FP and LR before call
8260 
8261     __ stpd(j_farg1, j_farg0, Address(__ pre(sp, -2 * wordSize)));
8262     __ stpd(j_farg3, j_farg2, Address(__ pre(sp, -2 * wordSize)));
8263     __ stpd(j_farg5, j_farg4, Address(__ pre(sp, -2 * wordSize)));
8264     __ stpd(j_farg7, j_farg6, Address(__ pre(sp, -2 * wordSize)));
8265 
8266     __ stp(j_rarg1, j_rarg0, Address(__ pre(sp, -2 * wordSize)));
8267     __ stp(j_rarg3, j_rarg2, Address(__ pre(sp, -2 * wordSize)));
8268     __ stp(j_rarg5, j_rarg4, Address(__ pre(sp, -2 * wordSize)));
8269     __ stp(j_rarg7, j_rarg6, Address(__ pre(sp, -2 * wordSize)));
8270 
8271     int frame_complete = __ offset();
8272 
8273     // Set up last_Java_sp and last_Java_fp
8274     address the_pc = __ pc();
8275     __ set_last_Java_frame(sp, noreg, the_pc, rscratch1);
8276 
8277     // Call runtime
8278     __ mov(c_rarg1, r0);
8279     __ mov(c_rarg0, rthread);
8280 
8281     __ mov(rscratch1, destination);
8282     __ blr(rscratch1);
8283 
8284     oop_maps->add_gc_map(the_pc - start, map);
8285 
8286     __ reset_last_Java_frame(false);
8287 
8288     __ ldp(j_rarg7, j_rarg6, Address(__ post(sp, 2 * wordSize)));
8289     __ ldp(j_rarg5, j_rarg4, Address(__ post(sp, 2 * wordSize)));
8290     __ ldp(j_rarg3, j_rarg2, Address(__ post(sp, 2 * wordSize)));
8291     __ ldp(j_rarg1, j_rarg0, Address(__ post(sp, 2 * wordSize)));
8292 
8293     __ ldpd(j_farg7, j_farg6, Address(__ post(sp, 2 * wordSize)));
8294     __ ldpd(j_farg5, j_farg4, Address(__ post(sp, 2 * wordSize)));
8295     __ ldpd(j_farg3, j_farg2, Address(__ post(sp, 2 * wordSize)));
8296     __ ldpd(j_farg1, j_farg0, Address(__ post(sp, 2 * wordSize)));
8297 
8298     __ leave();
8299 
8300     // check for pending exceptions
8301     Label pending;
8302     __ ldr(rscratch1, Address(rthread, in_bytes(Thread::pending_exception_offset())));
8303     __ cbnz(rscratch1, pending);
8304 
8305     if (has_res) {
8306       __ get_vm_result(r0, rthread);
8307     }
8308 
8309     __ ret(lr);
8310 
8311     __ bind(pending);
8312     __ far_jump(RuntimeAddress(StubRoutines::forward_exception_entry()));
8313 
8314     // -------------
8315     // make sure all code is generated
8316     masm->flush();
8317 
8318     RuntimeStub* stub = RuntimeStub::new_runtime_stub(name, &code, frame_complete, frame_size_in_words, oop_maps, false);
8319     return stub->entry_point();
8320   }
8321 
8322   // Initialization
8323   void generate_initial_stubs() {
8324     // Generate initial stubs and initializes the entry points
8325 
8326     // entry points that exist in all platforms Note: This is code
8327     // that could be shared among different platforms - however the
8328     // benefit seems to be smaller than the disadvantage of having a
8329     // much more complicated generator structure. See also comment in
8330     // stubRoutines.hpp.
8331 
8332     StubRoutines::_forward_exception_entry = generate_forward_exception();
8333 
8334     StubRoutines::_call_stub_entry =
8335       generate_call_stub(StubRoutines::_call_stub_return_address);
8336 
8337     // is referenced by megamorphic call
8338     StubRoutines::_catch_exception_entry = generate_catch_exception();
8339 
8340     // Initialize table for copy memory (arraycopy) check.
8341     if (UnsafeMemoryAccess::_table == nullptr) {

8348       StubRoutines::_updateBytesCRC32 = generate_updateBytesCRC32();
8349     }
8350 
8351     if (UseCRC32CIntrinsics) {
8352       StubRoutines::_updateBytesCRC32C = generate_updateBytesCRC32C();
8353     }
8354 
8355     if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin)) {
8356       StubRoutines::_dsin = generate_dsin_dcos(/* isCos = */ false);
8357     }
8358 
8359     if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos)) {
8360       StubRoutines::_dcos = generate_dsin_dcos(/* isCos = */ true);
8361     }
8362 
8363     if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_float16ToFloat) &&
8364         vmIntrinsics::is_intrinsic_available(vmIntrinsics::_floatToFloat16)) {
8365       StubRoutines::_hf2f = generate_float16ToFloat();
8366       StubRoutines::_f2hf = generate_floatToFloat16();
8367     }
8368 
8369     if (InlineTypeReturnedAsFields) {
8370       StubRoutines::_load_inline_type_fields_in_regs =
8371          generate_return_value_stub(CAST_FROM_FN_PTR(address, SharedRuntime::load_inline_type_fields_in_regs), "load_inline_type_fields_in_regs", false);
8372       StubRoutines::_store_inline_type_fields_to_buf =
8373          generate_return_value_stub(CAST_FROM_FN_PTR(address, SharedRuntime::store_inline_type_fields_to_buf), "store_inline_type_fields_to_buf", true);
8374     }
8375 
8376   }
8377 
8378   void generate_continuation_stubs() {
8379     // Continuation stubs:
8380     StubRoutines::_cont_thaw          = generate_cont_thaw();
8381     StubRoutines::_cont_returnBarrier = generate_cont_returnBarrier();
8382     StubRoutines::_cont_returnBarrierExc = generate_cont_returnBarrier_exception();
8383   }
8384 
8385   void generate_final_stubs() {
8386     // support for verify_oop (must happen after universe_init)
8387     if (VerifyOops) {
8388       StubRoutines::_verify_oop_subroutine_entry   = generate_verify_oop();
8389     }
8390 
8391     // arraycopy stubs used by compilers
8392     generate_arraycopy_stubs();
8393 
8394     BarrierSetNMethod* bs_nm = BarrierSet::barrier_set()->barrier_set_nmethod();
8395     if (bs_nm != nullptr) {
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