5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "asm/macroAssembler.hpp"
26 #include "classfile/javaClasses.hpp"
27 #include "classfile/vmIntrinsics.hpp"
28 #include "compiler/oopMap.hpp"
29 #include "gc/shared/barrierSet.hpp"
30 #include "gc/shared/barrierSetAssembler.hpp"
31 #include "gc/shared/barrierSetNMethod.hpp"
32 #include "gc/shared/gc_globals.hpp"
33 #include "memory/universe.hpp"
34 #include "prims/jvmtiExport.hpp"
35 #include "prims/upcallLinker.hpp"
36 #include "runtime/arguments.hpp"
37 #include "runtime/continuationEntry.hpp"
38 #include "runtime/javaThread.hpp"
39 #include "runtime/sharedRuntime.hpp"
40 #include "runtime/stubRoutines.hpp"
41 #include "stubGenerator_x86_64.hpp"
42 #ifdef COMPILER2
43 #include "opto/runtime.hpp"
44 #include "opto/c2_globals.hpp"
45 #endif
46 #if INCLUDE_JVMCI
47 #include "jvmci/jvmci_globals.hpp"
48 #endif
49
50 // For a more detailed description of the stub routine structure
51 // see the comment in stubRoutines.hpp
52
53 #define __ _masm->
54 #define TIMES_OOP (UseCompressedOops ? Address::times_4 : Address::times_8)
55
56 #ifdef PRODUCT
57 #define BLOCK_COMMENT(str) /* nothing */
58 #else
59 #define BLOCK_COMMENT(str) __ block_comment(str)
60 #endif // PRODUCT
284 __ BIND(loop);
285 __ movptr(rax, Address(c_rarg2, 0));// get parameter
286 __ addptr(c_rarg2, wordSize); // advance to next parameter
287 __ decrementl(c_rarg1); // decrement counter
288 __ push(rax); // pass parameter
289 __ jcc(Assembler::notZero, loop);
290
291 // call Java function
292 __ BIND(parameters_done);
293 __ movptr(rbx, method); // get Method*
294 __ movptr(c_rarg1, entry_point); // get entry_point
295 __ mov(r13, rsp); // set sender sp
296 BLOCK_COMMENT("call Java function");
297 __ call(c_rarg1);
298
299 BLOCK_COMMENT("call_stub_return_address:");
300 return_address = __ pc();
301
302 // store result depending on type (everything that is not
303 // T_OBJECT, T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT)
304 __ movptr(c_rarg0, result);
305 Label is_long, is_float, is_double, exit;
306 __ movl(c_rarg1, result_type);
307 __ cmpl(c_rarg1, T_OBJECT);
308 __ jcc(Assembler::equal, is_long);
309 __ cmpl(c_rarg1, T_LONG);
310 __ jcc(Assembler::equal, is_long);
311 __ cmpl(c_rarg1, T_FLOAT);
312 __ jcc(Assembler::equal, is_float);
313 __ cmpl(c_rarg1, T_DOUBLE);
314 __ jcc(Assembler::equal, is_double);
315 #ifdef ASSERT
316 // make sure the type is INT
317 {
318 Label L;
319 __ cmpl(c_rarg1, T_INT);
320 __ jcc(Assembler::equal, L);
321 __ stop("StubRoutines::call_stub: unexpected result type");
322 __ bind(L);
323 }
324 #endif
325
326 // handle T_INT case
327 __ movl(Address(c_rarg0, 0), rax);
328
329 __ BIND(exit);
330
331 // pop parameters
332 __ lea(rsp, rsp_after_call);
333
334 #ifdef ASSERT
335 // verify that threads correspond
336 {
337 Label L1, L2, L3;
338 __ cmpptr(r15_thread, thread);
339 __ jcc(Assembler::equal, L1);
340 __ stop("StubRoutines::call_stub: r15_thread is corrupted");
341 __ bind(L1);
342 __ get_thread_slow(rbx);
343 __ cmpptr(r15_thread, thread);
344 __ jcc(Assembler::equal, L2);
345 __ stop("StubRoutines::call_stub: r15_thread is modified by call");
346 __ bind(L2);
347 __ cmpptr(r15_thread, rbx);
365 __ movptr(r13, r13_save);
366 __ movptr(r12, r12_save);
367 __ movptr(rbx, rbx_save);
368
369 #ifdef _WIN64
370 __ movptr(rdi, rdi_save);
371 __ movptr(rsi, rsi_save);
372 #else
373 __ ldmxcsr(mxcsr_save);
374 #endif
375
376 // restore rsp
377 __ addptr(rsp, -rsp_after_call_off * wordSize);
378
379 // return
380 __ vzeroupper();
381 __ pop(rbp);
382 __ ret(0);
383
384 // handle return types different from T_INT
385 __ BIND(is_long);
386 __ movq(Address(c_rarg0, 0), rax);
387 __ jmp(exit);
388
389 __ BIND(is_float);
390 __ movflt(Address(c_rarg0, 0), xmm0);
391 __ jmp(exit);
392
393 __ BIND(is_double);
394 __ movdbl(Address(c_rarg0, 0), xmm0);
395 __ jmp(exit);
396
397 return start;
398 }
399
400 // Return point for a Java call if there's an exception thrown in
401 // Java code. The exception is caught and transformed into a
402 // pending exception stored in JavaThread that can be tested from
403 // within the VM.
404 //
405 // Note: Usually the parameters are removed by the callee. In case
406 // of an exception crossing an activation frame boundary, that is
407 // not the case if the callee is compiled code => need to setup the
408 // rsp.
409 //
410 // rax: exception oop
411
412 address StubGenerator::generate_catch_exception() {
413 StubId stub_id = StubId::stubgen_catch_exception_id;
414 StubCodeMark mark(this, stub_id);
3748 * Output:
3749 * rax - float16 jshort
3750 */
3751 address StubGenerator::generate_floatToFloat16() {
3752 StubId stub_id = StubId::stubgen_f2hf_id;
3753 StubCodeMark mark(this, stub_id);
3754
3755 address start = __ pc();
3756
3757 BLOCK_COMMENT("Entry:");
3758 // No need for RuntimeStub frame since it is called only during JIT compilation
3759
3760 // Convert and put result into rax
3761 __ flt_to_flt16(rax, xmm0, xmm1);
3762
3763 __ ret(0);
3764
3765 return start;
3766 }
3767
3768 address StubGenerator::generate_cont_thaw(StubId stub_id) {
3769 if (!Continuations::enabled()) return nullptr;
3770
3771 bool return_barrier;
3772 bool return_barrier_exception;
3773 Continuation::thaw_kind kind;
3774
3775 switch (stub_id) {
3776 case StubId::stubgen_cont_thaw_id:
3777 return_barrier = false;
3778 return_barrier_exception = false;
3779 kind = Continuation::thaw_top;
3780 break;
3781 case StubId::stubgen_cont_returnBarrier_id:
3782 return_barrier = true;
3783 return_barrier_exception = false;
3784 kind = Continuation::thaw_return_barrier;
3785 break;
3786 case StubId::stubgen_cont_returnBarrierExc_id:
3787 return_barrier = true;
3799 if (!return_barrier) {
3800 // Pop return address. If we don't do this, we get a drift,
3801 // where the bottom-most frozen frame continuously grows.
3802 __ pop(c_rarg3);
3803 } else {
3804 __ movptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset()));
3805 }
3806
3807 #ifdef ASSERT
3808 {
3809 Label L_good_sp;
3810 __ cmpptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset()));
3811 __ jcc(Assembler::equal, L_good_sp);
3812 __ stop("Incorrect rsp at thaw entry");
3813 __ BIND(L_good_sp);
3814 }
3815 #endif // ASSERT
3816
3817 if (return_barrier) {
3818 // Preserve possible return value from a method returning to the return barrier.
3819 __ push_ppx(rax);
3820 __ push_d(xmm0);
3821 }
3822
3823 __ movptr(c_rarg0, r15_thread);
3824 __ movptr(c_rarg1, (return_barrier ? 1 : 0));
3825 __ call_VM_leaf(CAST_FROM_FN_PTR(address, Continuation::prepare_thaw), 2);
3826 __ movptr(rbx, rax);
3827
3828 if (return_barrier) {
3829 // Restore return value from a method returning to the return barrier.
3830 // No safepoint in the call to thaw, so even an oop return value should be OK.
3831 __ pop_d(xmm0);
3832 __ pop_ppx(rax);
3833 }
3834
3835 #ifdef ASSERT
3836 {
3837 Label L_good_sp;
3838 __ cmpptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset()));
3839 __ jcc(Assembler::equal, L_good_sp);
3840 __ stop("Incorrect rsp after prepare thaw");
3841 __ BIND(L_good_sp);
3842 }
3843 #endif // ASSERT
3844
3845 // rbx contains the size of the frames to thaw, 0 if overflow or no more frames
3846 Label L_thaw_success;
3847 __ testptr(rbx, rbx);
3848 __ jccb(Assembler::notZero, L_thaw_success);
3849 __ jump(RuntimeAddress(SharedRuntime::throw_StackOverflowError_entry()));
3850 __ bind(L_thaw_success);
3851
3852 // Make room for the thawed frames and align the stack.
3853 __ subptr(rsp, rbx);
3854 __ andptr(rsp, -StackAlignmentInBytes);
3855
3856 if (return_barrier) {
3857 // Preserve possible return value from a method returning to the return barrier. (Again.)
3858 __ push_ppx(rax);
3859 __ push_d(xmm0);
3860 }
3861
3862 // If we want, we can templatize thaw by kind, and have three different entries.
3863 __ movptr(c_rarg0, r15_thread);
3864 __ movptr(c_rarg1, kind);
3865 __ call_VM_leaf(Continuation::thaw_entry(), 2);
3866 __ movptr(rbx, rax);
3867
3868 if (return_barrier) {
3869 // Restore return value from a method returning to the return barrier. (Again.)
3870 // No safepoint in the call to thaw, so even an oop return value should be OK.
3871 __ pop_d(xmm0);
3872 __ pop_ppx(rax);
3873 } else {
3874 // Return 0 (success) from doYield.
3875 __ xorptr(rax, rax);
3876 }
3877
3878 // After thawing, rbx is the SP of the yielding frame.
3879 // Move there, and then to saved RBP slot.
3880 __ movptr(rsp, rbx);
3881 __ subptr(rsp, 2*wordSize);
3882
3883 if (return_barrier_exception) {
3884 __ movptr(c_rarg0, r15_thread);
3885 __ movptr(c_rarg1, Address(rsp, wordSize)); // return address
3886
3887 // rax still holds the original exception oop, save it before the call
3888 __ push_ppx(rax);
3889
3890 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), 2);
3891 __ movptr(rbx, rax);
3892
4059
4060 void StubGenerator::generate_initial_stubs() {
4061 // Generates all stubs and initializes the entry points
4062
4063 // This platform-specific settings are needed by generate_call_stub()
4064 create_control_words();
4065
4066 // Initialize table for unsafe copy memeory check.
4067 if (UnsafeMemoryAccess::_table == nullptr) {
4068 UnsafeMemoryAccess::create_table(16 + 4); // 16 for copyMemory; 4 for setMemory
4069 }
4070
4071 // entry points that exist in all platforms Note: This is code
4072 // that could be shared among different platforms - however the
4073 // benefit seems to be smaller than the disadvantage of having a
4074 // much more complicated generator structure. See also comment in
4075 // stubRoutines.hpp.
4076
4077 StubRoutines::_forward_exception_entry = generate_forward_exception();
4078
4079 StubRoutines::_call_stub_entry =
4080 generate_call_stub(StubRoutines::_call_stub_return_address);
4081
4082 // is referenced by megamorphic call
4083 StubRoutines::_catch_exception_entry = generate_catch_exception();
4084
4085 // platform dependent
4086 StubRoutines::x86::_get_previous_sp_entry = generate_get_previous_sp();
4087
4088 StubRoutines::x86::_verify_mxcsr_entry = generate_verify_mxcsr();
4089
4090 StubRoutines::x86::_f2i_fixup = generate_f2i_fixup();
4091 StubRoutines::x86::_f2l_fixup = generate_f2l_fixup();
4092 StubRoutines::x86::_d2i_fixup = generate_d2i_fixup();
4093 StubRoutines::x86::_d2l_fixup = generate_d2l_fixup();
4094
4095 StubRoutines::x86::_float_sign_mask = generate_fp_mask(StubId::stubgen_float_sign_mask_id, 0x7FFFFFFF7FFFFFFF);
4096 StubRoutines::x86::_float_sign_flip = generate_fp_mask(StubId::stubgen_float_sign_flip_id, 0x8000000080000000);
4097 StubRoutines::x86::_double_sign_mask = generate_fp_mask(StubId::stubgen_double_sign_mask_id, 0x7FFFFFFFFFFFFFFF);
4098 StubRoutines::x86::_double_sign_flip = generate_fp_mask(StubId::stubgen_double_sign_flip_id, 0x8000000000000000);
4104 if (UseCRC32CIntrinsics) {
4105 bool supports_clmul = VM_Version::supports_clmul();
4106 StubRoutines::_updateBytesCRC32C = generate_updateBytesCRC32C(supports_clmul);
4107 }
4108
4109 if (VM_Version::supports_float16()) {
4110 // For results consistency both intrinsics should be enabled.
4111 // vmIntrinsics checks InlineIntrinsics flag, no need to check it here.
4112 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_float16ToFloat) &&
4113 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_floatToFloat16)) {
4114 StubRoutines::_hf2f = generate_float16ToFloat();
4115 StubRoutines::_f2hf = generate_floatToFloat16();
4116 }
4117 }
4118
4119 generate_libm_stubs();
4120
4121 StubRoutines::_fmod = generate_libmFmod(); // from stubGenerator_x86_64_fmod.cpp
4122 }
4123
4124 void StubGenerator::generate_continuation_stubs() {
4125 // Continuation stubs:
4126 StubRoutines::_cont_thaw = generate_cont_thaw();
4127 StubRoutines::_cont_returnBarrier = generate_cont_returnBarrier();
4128 StubRoutines::_cont_returnBarrierExc = generate_cont_returnBarrier_exception();
4129 StubRoutines::_cont_preempt_stub = generate_cont_preempt_stub();
4130 }
4131
4132 void StubGenerator::generate_final_stubs() {
4133 // Generates the rest of stubs and initializes the entry points
4134
4135 // support for verify_oop (must happen after universe_init)
4136 if (VerifyOops) {
4137 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop();
4138 }
4139
4140 // arraycopy stubs used by compilers
4141 generate_arraycopy_stubs();
4142
4143 StubRoutines::_method_entry_barrier = generate_method_entry_barrier();
|
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "asm/assembler.hpp"
26 #include "asm/macroAssembler.hpp"
27 #include "classfile/javaClasses.hpp"
28 #include "classfile/vmIntrinsics.hpp"
29 #include "compiler/oopMap.hpp"
30 #include "gc/shared/barrierSet.hpp"
31 #include "gc/shared/barrierSetAssembler.hpp"
32 #include "gc/shared/barrierSetNMethod.hpp"
33 #include "gc/shared/gc_globals.hpp"
34 #include "memory/universe.hpp"
35 #include "prims/jvmtiExport.hpp"
36 #include "prims/upcallLinker.hpp"
37 #include "runtime/arguments.hpp"
38 #include "runtime/continuationEntry.hpp"
39 #include "runtime/javaThread.hpp"
40 #include "runtime/sharedRuntime.hpp"
41 #include "runtime/stubRoutines.hpp"
42 #include "utilities/macros.hpp"
43 #include "vmreg_x86.inline.hpp"
44 #include "stubGenerator_x86_64.hpp"
45 #ifdef COMPILER2
46 #include "opto/runtime.hpp"
47 #include "opto/c2_globals.hpp"
48 #endif
49 #if INCLUDE_JVMCI
50 #include "jvmci/jvmci_globals.hpp"
51 #endif
52
53 // For a more detailed description of the stub routine structure
54 // see the comment in stubRoutines.hpp
55
56 #define __ _masm->
57 #define TIMES_OOP (UseCompressedOops ? Address::times_4 : Address::times_8)
58
59 #ifdef PRODUCT
60 #define BLOCK_COMMENT(str) /* nothing */
61 #else
62 #define BLOCK_COMMENT(str) __ block_comment(str)
63 #endif // PRODUCT
287 __ BIND(loop);
288 __ movptr(rax, Address(c_rarg2, 0));// get parameter
289 __ addptr(c_rarg2, wordSize); // advance to next parameter
290 __ decrementl(c_rarg1); // decrement counter
291 __ push(rax); // pass parameter
292 __ jcc(Assembler::notZero, loop);
293
294 // call Java function
295 __ BIND(parameters_done);
296 __ movptr(rbx, method); // get Method*
297 __ movptr(c_rarg1, entry_point); // get entry_point
298 __ mov(r13, rsp); // set sender sp
299 BLOCK_COMMENT("call Java function");
300 __ call(c_rarg1);
301
302 BLOCK_COMMENT("call_stub_return_address:");
303 return_address = __ pc();
304
305 // store result depending on type (everything that is not
306 // T_OBJECT, T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT)
307 __ movptr(r13, result);
308 Label is_long, is_float, is_double, check_prim, exit;
309 __ movl(rbx, result_type);
310 __ cmpl(rbx, T_OBJECT);
311 __ jcc(Assembler::equal, check_prim);
312 __ cmpl(rbx, T_LONG);
313 __ jcc(Assembler::equal, is_long);
314 __ cmpl(rbx, T_FLOAT);
315 __ jcc(Assembler::equal, is_float);
316 __ cmpl(rbx, T_DOUBLE);
317 __ jcc(Assembler::equal, is_double);
318 #ifdef ASSERT
319 // make sure the type is INT
320 {
321 Label L;
322 __ cmpl(rbx, T_INT);
323 __ jcc(Assembler::equal, L);
324 __ stop("StubRoutines::call_stub: unexpected result type");
325 __ bind(L);
326 }
327 #endif
328
329 // handle T_INT case
330 __ movl(Address(r13, 0), rax);
331
332 __ BIND(exit);
333
334 // pop parameters
335 __ lea(rsp, rsp_after_call);
336
337 #ifdef ASSERT
338 // verify that threads correspond
339 {
340 Label L1, L2, L3;
341 __ cmpptr(r15_thread, thread);
342 __ jcc(Assembler::equal, L1);
343 __ stop("StubRoutines::call_stub: r15_thread is corrupted");
344 __ bind(L1);
345 __ get_thread_slow(rbx);
346 __ cmpptr(r15_thread, thread);
347 __ jcc(Assembler::equal, L2);
348 __ stop("StubRoutines::call_stub: r15_thread is modified by call");
349 __ bind(L2);
350 __ cmpptr(r15_thread, rbx);
368 __ movptr(r13, r13_save);
369 __ movptr(r12, r12_save);
370 __ movptr(rbx, rbx_save);
371
372 #ifdef _WIN64
373 __ movptr(rdi, rdi_save);
374 __ movptr(rsi, rsi_save);
375 #else
376 __ ldmxcsr(mxcsr_save);
377 #endif
378
379 // restore rsp
380 __ addptr(rsp, -rsp_after_call_off * wordSize);
381
382 // return
383 __ vzeroupper();
384 __ pop(rbp);
385 __ ret(0);
386
387 // handle return types different from T_INT
388 __ BIND(check_prim);
389 if (InlineTypeReturnedAsFields) {
390 // Check for scalarized return value
391 __ testptr(rax, 1);
392 __ jcc(Assembler::zero, is_long);
393 // Load pack handler address
394 __ andptr(rax, -2);
395 __ movptr(rax, Address(rax, InstanceKlass::adr_inlineklass_fixed_block_offset()));
396 __ movptr(rbx, Address(rax, InlineKlass::pack_handler_jobject_offset()));
397 // Call pack handler to initialize the buffer
398 __ call(rbx);
399 __ jmp(exit);
400 }
401 __ BIND(is_long);
402 __ movq(Address(r13, 0), rax);
403 __ jmp(exit);
404
405 __ BIND(is_float);
406 __ movflt(Address(r13, 0), xmm0);
407 __ jmp(exit);
408
409 __ BIND(is_double);
410 __ movdbl(Address(r13, 0), xmm0);
411 __ jmp(exit);
412
413 return start;
414 }
415
416 // Return point for a Java call if there's an exception thrown in
417 // Java code. The exception is caught and transformed into a
418 // pending exception stored in JavaThread that can be tested from
419 // within the VM.
420 //
421 // Note: Usually the parameters are removed by the callee. In case
422 // of an exception crossing an activation frame boundary, that is
423 // not the case if the callee is compiled code => need to setup the
424 // rsp.
425 //
426 // rax: exception oop
427
428 address StubGenerator::generate_catch_exception() {
429 StubId stub_id = StubId::stubgen_catch_exception_id;
430 StubCodeMark mark(this, stub_id);
3764 * Output:
3765 * rax - float16 jshort
3766 */
3767 address StubGenerator::generate_floatToFloat16() {
3768 StubId stub_id = StubId::stubgen_f2hf_id;
3769 StubCodeMark mark(this, stub_id);
3770
3771 address start = __ pc();
3772
3773 BLOCK_COMMENT("Entry:");
3774 // No need for RuntimeStub frame since it is called only during JIT compilation
3775
3776 // Convert and put result into rax
3777 __ flt_to_flt16(rax, xmm0, xmm1);
3778
3779 __ ret(0);
3780
3781 return start;
3782 }
3783
3784 static void save_return_registers(MacroAssembler* masm) {
3785 masm->push_ppx(rax);
3786 if (InlineTypeReturnedAsFields) {
3787 masm->push(rdi);
3788 masm->push(rsi);
3789 masm->push(rdx);
3790 masm->push(rcx);
3791 masm->push(r8);
3792 masm->push(r9);
3793 }
3794 masm->push_d(xmm0);
3795 if (InlineTypeReturnedAsFields) {
3796 masm->push_d(xmm1);
3797 masm->push_d(xmm2);
3798 masm->push_d(xmm3);
3799 masm->push_d(xmm4);
3800 masm->push_d(xmm5);
3801 masm->push_d(xmm6);
3802 masm->push_d(xmm7);
3803 }
3804 #ifdef ASSERT
3805 masm->movq(rax, 0xBADC0FFE);
3806 masm->movq(rdi, rax);
3807 masm->movq(rsi, rax);
3808 masm->movq(rdx, rax);
3809 masm->movq(rcx, rax);
3810 masm->movq(r8, rax);
3811 masm->movq(r9, rax);
3812 masm->movq(xmm0, rax);
3813 masm->movq(xmm1, rax);
3814 masm->movq(xmm2, rax);
3815 masm->movq(xmm3, rax);
3816 masm->movq(xmm4, rax);
3817 masm->movq(xmm5, rax);
3818 masm->movq(xmm6, rax);
3819 masm->movq(xmm7, rax);
3820 #endif
3821 }
3822
3823 static void restore_return_registers(MacroAssembler* masm) {
3824 if (InlineTypeReturnedAsFields) {
3825 masm->pop_d(xmm7);
3826 masm->pop_d(xmm6);
3827 masm->pop_d(xmm5);
3828 masm->pop_d(xmm4);
3829 masm->pop_d(xmm3);
3830 masm->pop_d(xmm2);
3831 masm->pop_d(xmm1);
3832 }
3833 masm->pop_d(xmm0);
3834 if (InlineTypeReturnedAsFields) {
3835 masm->pop(r9);
3836 masm->pop(r8);
3837 masm->pop(rcx);
3838 masm->pop(rdx);
3839 masm->pop(rsi);
3840 masm->pop(rdi);
3841 }
3842 masm->pop_ppx(rax);
3843 }
3844
3845 address StubGenerator::generate_cont_thaw(StubId stub_id) {
3846 if (!Continuations::enabled()) return nullptr;
3847
3848 bool return_barrier;
3849 bool return_barrier_exception;
3850 Continuation::thaw_kind kind;
3851
3852 switch (stub_id) {
3853 case StubId::stubgen_cont_thaw_id:
3854 return_barrier = false;
3855 return_barrier_exception = false;
3856 kind = Continuation::thaw_top;
3857 break;
3858 case StubId::stubgen_cont_returnBarrier_id:
3859 return_barrier = true;
3860 return_barrier_exception = false;
3861 kind = Continuation::thaw_return_barrier;
3862 break;
3863 case StubId::stubgen_cont_returnBarrierExc_id:
3864 return_barrier = true;
3876 if (!return_barrier) {
3877 // Pop return address. If we don't do this, we get a drift,
3878 // where the bottom-most frozen frame continuously grows.
3879 __ pop(c_rarg3);
3880 } else {
3881 __ movptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset()));
3882 }
3883
3884 #ifdef ASSERT
3885 {
3886 Label L_good_sp;
3887 __ cmpptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset()));
3888 __ jcc(Assembler::equal, L_good_sp);
3889 __ stop("Incorrect rsp at thaw entry");
3890 __ BIND(L_good_sp);
3891 }
3892 #endif // ASSERT
3893
3894 if (return_barrier) {
3895 // Preserve possible return value from a method returning to the return barrier.
3896 save_return_registers(_masm);
3897 }
3898
3899 __ movptr(c_rarg0, r15_thread);
3900 __ movptr(c_rarg1, (return_barrier ? 1 : 0));
3901 __ call_VM_leaf(CAST_FROM_FN_PTR(address, Continuation::prepare_thaw), 2);
3902 __ movptr(rbx, rax);
3903
3904 if (return_barrier) {
3905 // Restore return value from a method returning to the return barrier.
3906 // No safepoint in the call to thaw, so even an oop return value should be OK.
3907 restore_return_registers(_masm);
3908 }
3909
3910 #ifdef ASSERT
3911 {
3912 Label L_good_sp;
3913 __ cmpptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset()));
3914 __ jcc(Assembler::equal, L_good_sp);
3915 __ stop("Incorrect rsp after prepare thaw");
3916 __ BIND(L_good_sp);
3917 }
3918 #endif // ASSERT
3919
3920 // rbx contains the size of the frames to thaw, 0 if overflow or no more frames
3921 Label L_thaw_success;
3922 __ testptr(rbx, rbx);
3923 __ jccb(Assembler::notZero, L_thaw_success);
3924 __ jump(RuntimeAddress(SharedRuntime::throw_StackOverflowError_entry()));
3925 __ bind(L_thaw_success);
3926
3927 // Make room for the thawed frames and align the stack.
3928 __ subptr(rsp, rbx);
3929 __ andptr(rsp, -StackAlignmentInBytes);
3930
3931 if (return_barrier) {
3932 // Preserve possible return value from a method returning to the return barrier. (Again.)
3933 save_return_registers(_masm);
3934 }
3935
3936 // If we want, we can templatize thaw by kind, and have three different entries.
3937 __ movptr(c_rarg0, r15_thread);
3938 __ movptr(c_rarg1, kind);
3939 __ call_VM_leaf(Continuation::thaw_entry(), 2);
3940 __ movptr(rbx, rax);
3941
3942 if (return_barrier) {
3943 // Restore return value from a method returning to the return barrier. (Again.)
3944 // No safepoint in the call to thaw, so even an oop return value should be OK.
3945 restore_return_registers(_masm);
3946 } else {
3947 // Return 0 (success) from doYield.
3948 __ xorptr(rax, rax);
3949 }
3950
3951 // After thawing, rbx is the SP of the yielding frame.
3952 // Move there, and then to saved RBP slot.
3953 __ movptr(rsp, rbx);
3954 __ subptr(rsp, 2*wordSize);
3955
3956 if (return_barrier_exception) {
3957 __ movptr(c_rarg0, r15_thread);
3958 __ movptr(c_rarg1, Address(rsp, wordSize)); // return address
3959
3960 // rax still holds the original exception oop, save it before the call
3961 __ push_ppx(rax);
3962
3963 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), 2);
3964 __ movptr(rbx, rax);
3965
4132
4133 void StubGenerator::generate_initial_stubs() {
4134 // Generates all stubs and initializes the entry points
4135
4136 // This platform-specific settings are needed by generate_call_stub()
4137 create_control_words();
4138
4139 // Initialize table for unsafe copy memeory check.
4140 if (UnsafeMemoryAccess::_table == nullptr) {
4141 UnsafeMemoryAccess::create_table(16 + 4); // 16 for copyMemory; 4 for setMemory
4142 }
4143
4144 // entry points that exist in all platforms Note: This is code
4145 // that could be shared among different platforms - however the
4146 // benefit seems to be smaller than the disadvantage of having a
4147 // much more complicated generator structure. See also comment in
4148 // stubRoutines.hpp.
4149
4150 StubRoutines::_forward_exception_entry = generate_forward_exception();
4151
4152 // Generate these first because they are called from other stubs
4153 if (InlineTypeReturnedAsFields) {
4154 StubRoutines::_load_inline_type_fields_in_regs =
4155 generate_return_value_stub(CAST_FROM_FN_PTR(address, SharedRuntime::load_inline_type_fields_in_regs),
4156 "load_inline_type_fields_in_regs", false);
4157 StubRoutines::_store_inline_type_fields_to_buf =
4158 generate_return_value_stub(CAST_FROM_FN_PTR(address, SharedRuntime::store_inline_type_fields_to_buf),
4159 "store_inline_type_fields_to_buf", true);
4160 }
4161
4162 StubRoutines::_call_stub_entry =
4163 generate_call_stub(StubRoutines::_call_stub_return_address);
4164
4165 // is referenced by megamorphic call
4166 StubRoutines::_catch_exception_entry = generate_catch_exception();
4167
4168 // platform dependent
4169 StubRoutines::x86::_get_previous_sp_entry = generate_get_previous_sp();
4170
4171 StubRoutines::x86::_verify_mxcsr_entry = generate_verify_mxcsr();
4172
4173 StubRoutines::x86::_f2i_fixup = generate_f2i_fixup();
4174 StubRoutines::x86::_f2l_fixup = generate_f2l_fixup();
4175 StubRoutines::x86::_d2i_fixup = generate_d2i_fixup();
4176 StubRoutines::x86::_d2l_fixup = generate_d2l_fixup();
4177
4178 StubRoutines::x86::_float_sign_mask = generate_fp_mask(StubId::stubgen_float_sign_mask_id, 0x7FFFFFFF7FFFFFFF);
4179 StubRoutines::x86::_float_sign_flip = generate_fp_mask(StubId::stubgen_float_sign_flip_id, 0x8000000080000000);
4180 StubRoutines::x86::_double_sign_mask = generate_fp_mask(StubId::stubgen_double_sign_mask_id, 0x7FFFFFFFFFFFFFFF);
4181 StubRoutines::x86::_double_sign_flip = generate_fp_mask(StubId::stubgen_double_sign_flip_id, 0x8000000000000000);
4187 if (UseCRC32CIntrinsics) {
4188 bool supports_clmul = VM_Version::supports_clmul();
4189 StubRoutines::_updateBytesCRC32C = generate_updateBytesCRC32C(supports_clmul);
4190 }
4191
4192 if (VM_Version::supports_float16()) {
4193 // For results consistency both intrinsics should be enabled.
4194 // vmIntrinsics checks InlineIntrinsics flag, no need to check it here.
4195 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_float16ToFloat) &&
4196 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_floatToFloat16)) {
4197 StubRoutines::_hf2f = generate_float16ToFloat();
4198 StubRoutines::_f2hf = generate_floatToFloat16();
4199 }
4200 }
4201
4202 generate_libm_stubs();
4203
4204 StubRoutines::_fmod = generate_libmFmod(); // from stubGenerator_x86_64_fmod.cpp
4205 }
4206
4207 // Call here from the interpreter or compiled code to either load
4208 // multiple returned values from the inline type instance being
4209 // returned to registers or to store returned values to a newly
4210 // allocated inline type instance.
4211 // Register is a class, but it would be assigned numerical value.
4212 // "0" is assigned for xmm0. Thus we need to ignore -Wnonnull.
4213 PRAGMA_DIAG_PUSH
4214 PRAGMA_NONNULL_IGNORED
4215 address StubGenerator::generate_return_value_stub(address destination, const char* name, bool has_res) {
4216 // We need to save all registers the calling convention may use so
4217 // the runtime calls read or update those registers. This needs to
4218 // be in sync with SharedRuntime::java_return_convention().
4219 enum layout {
4220 pad_off = frame::arg_reg_save_area_bytes/BytesPerInt, pad_off_2,
4221 rax_off, rax_off_2,
4222 j_rarg5_off, j_rarg5_2,
4223 j_rarg4_off, j_rarg4_2,
4224 j_rarg3_off, j_rarg3_2,
4225 j_rarg2_off, j_rarg2_2,
4226 j_rarg1_off, j_rarg1_2,
4227 j_rarg0_off, j_rarg0_2,
4228 j_farg0_off, j_farg0_2,
4229 j_farg1_off, j_farg1_2,
4230 j_farg2_off, j_farg2_2,
4231 j_farg3_off, j_farg3_2,
4232 j_farg4_off, j_farg4_2,
4233 j_farg5_off, j_farg5_2,
4234 j_farg6_off, j_farg6_2,
4235 j_farg7_off, j_farg7_2,
4236 rbp_off, rbp_off_2,
4237 return_off, return_off_2,
4238
4239 framesize
4240 };
4241
4242 CodeBuffer buffer(name, 1000, 512);
4243 MacroAssembler* _masm = new MacroAssembler(&buffer);
4244
4245 int frame_size_in_bytes = align_up(framesize*BytesPerInt, 16);
4246 assert(frame_size_in_bytes == framesize*BytesPerInt, "misaligned");
4247 int frame_size_in_slots = frame_size_in_bytes / BytesPerInt;
4248 int frame_size_in_words = frame_size_in_bytes / wordSize;
4249
4250 OopMapSet *oop_maps = new OopMapSet();
4251 OopMap* map = new OopMap(frame_size_in_slots, 0);
4252
4253 map->set_callee_saved(VMRegImpl::stack2reg(rax_off), rax->as_VMReg());
4254 map->set_callee_saved(VMRegImpl::stack2reg(j_rarg5_off), j_rarg5->as_VMReg());
4255 map->set_callee_saved(VMRegImpl::stack2reg(j_rarg4_off), j_rarg4->as_VMReg());
4256 map->set_callee_saved(VMRegImpl::stack2reg(j_rarg3_off), j_rarg3->as_VMReg());
4257 map->set_callee_saved(VMRegImpl::stack2reg(j_rarg2_off), j_rarg2->as_VMReg());
4258 map->set_callee_saved(VMRegImpl::stack2reg(j_rarg1_off), j_rarg1->as_VMReg());
4259 map->set_callee_saved(VMRegImpl::stack2reg(j_rarg0_off), j_rarg0->as_VMReg());
4260 map->set_callee_saved(VMRegImpl::stack2reg(j_farg0_off), j_farg0->as_VMReg());
4261 map->set_callee_saved(VMRegImpl::stack2reg(j_farg1_off), j_farg1->as_VMReg());
4262 map->set_callee_saved(VMRegImpl::stack2reg(j_farg2_off), j_farg2->as_VMReg());
4263 map->set_callee_saved(VMRegImpl::stack2reg(j_farg3_off), j_farg3->as_VMReg());
4264 map->set_callee_saved(VMRegImpl::stack2reg(j_farg4_off), j_farg4->as_VMReg());
4265 map->set_callee_saved(VMRegImpl::stack2reg(j_farg5_off), j_farg5->as_VMReg());
4266 map->set_callee_saved(VMRegImpl::stack2reg(j_farg6_off), j_farg6->as_VMReg());
4267 map->set_callee_saved(VMRegImpl::stack2reg(j_farg7_off), j_farg7->as_VMReg());
4268
4269 int start = __ offset();
4270
4271 __ subptr(rsp, frame_size_in_bytes - 8 /* return address*/);
4272
4273 __ movptr(Address(rsp, rbp_off * BytesPerInt), rbp);
4274 __ movdbl(Address(rsp, j_farg7_off * BytesPerInt), j_farg7);
4275 __ movdbl(Address(rsp, j_farg6_off * BytesPerInt), j_farg6);
4276 __ movdbl(Address(rsp, j_farg5_off * BytesPerInt), j_farg5);
4277 __ movdbl(Address(rsp, j_farg4_off * BytesPerInt), j_farg4);
4278 __ movdbl(Address(rsp, j_farg3_off * BytesPerInt), j_farg3);
4279 __ movdbl(Address(rsp, j_farg2_off * BytesPerInt), j_farg2);
4280 __ movdbl(Address(rsp, j_farg1_off * BytesPerInt), j_farg1);
4281 __ movdbl(Address(rsp, j_farg0_off * BytesPerInt), j_farg0);
4282
4283 __ movptr(Address(rsp, j_rarg0_off * BytesPerInt), j_rarg0);
4284 __ movptr(Address(rsp, j_rarg1_off * BytesPerInt), j_rarg1);
4285 __ movptr(Address(rsp, j_rarg2_off * BytesPerInt), j_rarg2);
4286 __ movptr(Address(rsp, j_rarg3_off * BytesPerInt), j_rarg3);
4287 __ movptr(Address(rsp, j_rarg4_off * BytesPerInt), j_rarg4);
4288 __ movptr(Address(rsp, j_rarg5_off * BytesPerInt), j_rarg5);
4289 __ movptr(Address(rsp, rax_off * BytesPerInt), rax);
4290
4291 int frame_complete = __ offset();
4292
4293 __ set_last_Java_frame(noreg, noreg, nullptr, rscratch1);
4294
4295 __ mov(c_rarg0, r15_thread);
4296 __ mov(c_rarg1, rax);
4297
4298 __ call(RuntimeAddress(destination));
4299
4300 // Set an oopmap for the call site.
4301
4302 oop_maps->add_gc_map( __ offset() - start, map);
4303
4304 // clear last_Java_sp
4305 __ reset_last_Java_frame(false);
4306
4307 __ movptr(rbp, Address(rsp, rbp_off * BytesPerInt));
4308 __ movdbl(j_farg7, Address(rsp, j_farg7_off * BytesPerInt));
4309 __ movdbl(j_farg6, Address(rsp, j_farg6_off * BytesPerInt));
4310 __ movdbl(j_farg5, Address(rsp, j_farg5_off * BytesPerInt));
4311 __ movdbl(j_farg4, Address(rsp, j_farg4_off * BytesPerInt));
4312 __ movdbl(j_farg3, Address(rsp, j_farg3_off * BytesPerInt));
4313 __ movdbl(j_farg2, Address(rsp, j_farg2_off * BytesPerInt));
4314 __ movdbl(j_farg1, Address(rsp, j_farg1_off * BytesPerInt));
4315 __ movdbl(j_farg0, Address(rsp, j_farg0_off * BytesPerInt));
4316
4317 __ movptr(j_rarg0, Address(rsp, j_rarg0_off * BytesPerInt));
4318 __ movptr(j_rarg1, Address(rsp, j_rarg1_off * BytesPerInt));
4319 __ movptr(j_rarg2, Address(rsp, j_rarg2_off * BytesPerInt));
4320 __ movptr(j_rarg3, Address(rsp, j_rarg3_off * BytesPerInt));
4321 __ movptr(j_rarg4, Address(rsp, j_rarg4_off * BytesPerInt));
4322 __ movptr(j_rarg5, Address(rsp, j_rarg5_off * BytesPerInt));
4323 __ movptr(rax, Address(rsp, rax_off * BytesPerInt));
4324
4325 __ addptr(rsp, frame_size_in_bytes-8);
4326
4327 // check for pending exceptions
4328 Label pending;
4329 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
4330 __ jcc(Assembler::notEqual, pending);
4331
4332 if (has_res) {
4333 __ get_vm_result_oop(rax);
4334 }
4335
4336 __ ret(0);
4337
4338 __ bind(pending);
4339
4340 __ movptr(rax, Address(r15_thread, Thread::pending_exception_offset()));
4341 __ jump(RuntimeAddress(StubRoutines::forward_exception_entry()));
4342
4343 // -------------
4344 // make sure all code is generated
4345 _masm->flush();
4346
4347 RuntimeStub* stub = RuntimeStub::new_runtime_stub(name, &buffer, frame_complete, frame_size_in_words, oop_maps, false);
4348 return stub->entry_point();
4349 }
4350
4351 void StubGenerator::generate_continuation_stubs() {
4352 // Continuation stubs:
4353 StubRoutines::_cont_thaw = generate_cont_thaw();
4354 StubRoutines::_cont_returnBarrier = generate_cont_returnBarrier();
4355 StubRoutines::_cont_returnBarrierExc = generate_cont_returnBarrier_exception();
4356 StubRoutines::_cont_preempt_stub = generate_cont_preempt_stub();
4357 }
4358
4359 void StubGenerator::generate_final_stubs() {
4360 // Generates the rest of stubs and initializes the entry points
4361
4362 // support for verify_oop (must happen after universe_init)
4363 if (VerifyOops) {
4364 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop();
4365 }
4366
4367 // arraycopy stubs used by compilers
4368 generate_arraycopy_stubs();
4369
4370 StubRoutines::_method_entry_barrier = generate_method_entry_barrier();
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