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);
3732 * Output:
3733 * rax - float16 jshort
3734 */
3735 address StubGenerator::generate_floatToFloat16() {
3736 StubId stub_id = StubId::stubgen_f2hf_id;
3737 StubCodeMark mark(this, stub_id);
3738
3739 address start = __ pc();
3740
3741 BLOCK_COMMENT("Entry:");
3742 // No need for RuntimeStub frame since it is called only during JIT compilation
3743
3744 // Convert and put result into rax
3745 __ flt_to_flt16(rax, xmm0, xmm1);
3746
3747 __ ret(0);
3748
3749 return start;
3750 }
3751
3752 address StubGenerator::generate_cont_thaw(StubId stub_id) {
3753 if (!Continuations::enabled()) return nullptr;
3754
3755 bool return_barrier;
3756 bool return_barrier_exception;
3757 Continuation::thaw_kind kind;
3758
3759 switch (stub_id) {
3760 case StubId::stubgen_cont_thaw_id:
3761 return_barrier = false;
3762 return_barrier_exception = false;
3763 kind = Continuation::thaw_top;
3764 break;
3765 case StubId::stubgen_cont_returnBarrier_id:
3766 return_barrier = true;
3767 return_barrier_exception = false;
3768 kind = Continuation::thaw_return_barrier;
3769 break;
3770 case StubId::stubgen_cont_returnBarrierExc_id:
3771 return_barrier = true;
3783 if (!return_barrier) {
3784 // Pop return address. If we don't do this, we get a drift,
3785 // where the bottom-most frozen frame continuously grows.
3786 __ pop(c_rarg3);
3787 } else {
3788 __ movptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset()));
3789 }
3790
3791 #ifdef ASSERT
3792 {
3793 Label L_good_sp;
3794 __ cmpptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset()));
3795 __ jcc(Assembler::equal, L_good_sp);
3796 __ stop("Incorrect rsp at thaw entry");
3797 __ BIND(L_good_sp);
3798 }
3799 #endif // ASSERT
3800
3801 if (return_barrier) {
3802 // Preserve possible return value from a method returning to the return barrier.
3803 __ push_ppx(rax);
3804 __ push_d(xmm0);
3805 }
3806
3807 __ movptr(c_rarg0, r15_thread);
3808 __ movptr(c_rarg1, (return_barrier ? 1 : 0));
3809 __ call_VM_leaf(CAST_FROM_FN_PTR(address, Continuation::prepare_thaw), 2);
3810 __ movptr(rbx, rax);
3811
3812 if (return_barrier) {
3813 // Restore return value from a method returning to the return barrier.
3814 // No safepoint in the call to thaw, so even an oop return value should be OK.
3815 __ pop_d(xmm0);
3816 __ pop_ppx(rax);
3817 }
3818
3819 #ifdef ASSERT
3820 {
3821 Label L_good_sp;
3822 __ cmpptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset()));
3823 __ jcc(Assembler::equal, L_good_sp);
3824 __ stop("Incorrect rsp after prepare thaw");
3825 __ BIND(L_good_sp);
3826 }
3827 #endif // ASSERT
3828
3829 // rbx contains the size of the frames to thaw, 0 if overflow or no more frames
3830 Label L_thaw_success;
3831 __ testptr(rbx, rbx);
3832 __ jccb(Assembler::notZero, L_thaw_success);
3833 __ jump(RuntimeAddress(SharedRuntime::throw_StackOverflowError_entry()));
3834 __ bind(L_thaw_success);
3835
3836 // Make room for the thawed frames and align the stack.
3837 __ subptr(rsp, rbx);
3838 __ andptr(rsp, -StackAlignmentInBytes);
3839
3840 if (return_barrier) {
3841 // Preserve possible return value from a method returning to the return barrier. (Again.)
3842 __ push_ppx(rax);
3843 __ push_d(xmm0);
3844 }
3845
3846 // If we want, we can templatize thaw by kind, and have three different entries.
3847 __ movptr(c_rarg0, r15_thread);
3848 __ movptr(c_rarg1, kind);
3849 __ call_VM_leaf(Continuation::thaw_entry(), 2);
3850 __ movptr(rbx, rax);
3851
3852 if (return_barrier) {
3853 // Restore return value from a method returning to the return barrier. (Again.)
3854 // No safepoint in the call to thaw, so even an oop return value should be OK.
3855 __ pop_d(xmm0);
3856 __ pop_ppx(rax);
3857 } else {
3858 // Return 0 (success) from doYield.
3859 __ xorptr(rax, rax);
3860 }
3861
3862 // After thawing, rbx is the SP of the yielding frame.
3863 // Move there, and then to saved RBP slot.
3864 __ movptr(rsp, rbx);
3865 __ subptr(rsp, 2*wordSize);
3866
3867 if (return_barrier_exception) {
3868 __ movptr(c_rarg0, r15_thread);
3869 __ movptr(c_rarg1, Address(rsp, wordSize)); // return address
3870
3871 // rax still holds the original exception oop, save it before the call
3872 __ push_ppx(rax);
3873
3874 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), 2);
3875 __ movptr(rbx, rax);
3876
4043
4044 void StubGenerator::generate_initial_stubs() {
4045 // Generates all stubs and initializes the entry points
4046
4047 // This platform-specific settings are needed by generate_call_stub()
4048 create_control_words();
4049
4050 // Initialize table for unsafe copy memeory check.
4051 if (UnsafeMemoryAccess::_table == nullptr) {
4052 UnsafeMemoryAccess::create_table(16 + 4); // 16 for copyMemory; 4 for setMemory
4053 }
4054
4055 // entry points that exist in all platforms Note: This is code
4056 // that could be shared among different platforms - however the
4057 // benefit seems to be smaller than the disadvantage of having a
4058 // much more complicated generator structure. See also comment in
4059 // stubRoutines.hpp.
4060
4061 StubRoutines::_forward_exception_entry = generate_forward_exception();
4062
4063 StubRoutines::_call_stub_entry =
4064 generate_call_stub(StubRoutines::_call_stub_return_address);
4065
4066 // is referenced by megamorphic call
4067 StubRoutines::_catch_exception_entry = generate_catch_exception();
4068
4069 // platform dependent
4070 StubRoutines::x86::_verify_mxcsr_entry = generate_verify_mxcsr();
4071
4072 StubRoutines::x86::_f2i_fixup = generate_f2i_fixup();
4073 StubRoutines::x86::_f2l_fixup = generate_f2l_fixup();
4074 StubRoutines::x86::_d2i_fixup = generate_d2i_fixup();
4075 StubRoutines::x86::_d2l_fixup = generate_d2l_fixup();
4076
4077 StubRoutines::x86::_float_sign_mask = generate_fp_mask(StubId::stubgen_float_sign_mask_id, 0x7FFFFFFF7FFFFFFF);
4078 StubRoutines::x86::_float_sign_flip = generate_fp_mask(StubId::stubgen_float_sign_flip_id, 0x8000000080000000);
4079 StubRoutines::x86::_double_sign_mask = generate_fp_mask(StubId::stubgen_double_sign_mask_id, 0x7FFFFFFFFFFFFFFF);
4080 StubRoutines::x86::_double_sign_flip = generate_fp_mask(StubId::stubgen_double_sign_flip_id, 0x8000000000000000);
4081
4082 if (UseCRC32Intrinsics) {
4086 if (UseCRC32CIntrinsics) {
4087 bool supports_clmul = VM_Version::supports_clmul();
4088 StubRoutines::_updateBytesCRC32C = generate_updateBytesCRC32C(supports_clmul);
4089 }
4090
4091 if (VM_Version::supports_float16()) {
4092 // For results consistency both intrinsics should be enabled.
4093 // vmIntrinsics checks InlineIntrinsics flag, no need to check it here.
4094 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_float16ToFloat) &&
4095 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_floatToFloat16)) {
4096 StubRoutines::_hf2f = generate_float16ToFloat();
4097 StubRoutines::_f2hf = generate_floatToFloat16();
4098 }
4099 }
4100
4101 generate_libm_stubs();
4102
4103 StubRoutines::_fmod = generate_libmFmod(); // from stubGenerator_x86_64_fmod.cpp
4104 }
4105
4106 void StubGenerator::generate_continuation_stubs() {
4107 // Continuation stubs:
4108 StubRoutines::_cont_thaw = generate_cont_thaw();
4109 StubRoutines::_cont_returnBarrier = generate_cont_returnBarrier();
4110 StubRoutines::_cont_returnBarrierExc = generate_cont_returnBarrier_exception();
4111 StubRoutines::_cont_preempt_stub = generate_cont_preempt_stub();
4112 }
4113
4114 void StubGenerator::generate_final_stubs() {
4115 // Generates the rest of stubs and initializes the entry points
4116
4117 // support for verify_oop (must happen after universe_init)
4118 if (VerifyOops) {
4119 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop();
4120 }
4121
4122 // arraycopy stubs used by compilers
4123 generate_arraycopy_stubs();
4124
4125 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);
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 static void save_return_registers(MacroAssembler* masm) {
3769 masm->push_ppx(rax);
3770 if (InlineTypeReturnedAsFields) {
3771 masm->push(rdi);
3772 masm->push(rsi);
3773 masm->push(rdx);
3774 masm->push(rcx);
3775 masm->push(r8);
3776 masm->push(r9);
3777 }
3778 masm->push_d(xmm0);
3779 if (InlineTypeReturnedAsFields) {
3780 masm->push_d(xmm1);
3781 masm->push_d(xmm2);
3782 masm->push_d(xmm3);
3783 masm->push_d(xmm4);
3784 masm->push_d(xmm5);
3785 masm->push_d(xmm6);
3786 masm->push_d(xmm7);
3787 }
3788 #ifdef ASSERT
3789 masm->movq(rax, 0xBADC0FFE);
3790 masm->movq(rdi, rax);
3791 masm->movq(rsi, rax);
3792 masm->movq(rdx, rax);
3793 masm->movq(rcx, rax);
3794 masm->movq(r8, rax);
3795 masm->movq(r9, rax);
3796 masm->movq(xmm0, rax);
3797 masm->movq(xmm1, rax);
3798 masm->movq(xmm2, rax);
3799 masm->movq(xmm3, rax);
3800 masm->movq(xmm4, rax);
3801 masm->movq(xmm5, rax);
3802 masm->movq(xmm6, rax);
3803 masm->movq(xmm7, rax);
3804 #endif
3805 }
3806
3807 static void restore_return_registers(MacroAssembler* masm) {
3808 if (InlineTypeReturnedAsFields) {
3809 masm->pop_d(xmm7);
3810 masm->pop_d(xmm6);
3811 masm->pop_d(xmm5);
3812 masm->pop_d(xmm4);
3813 masm->pop_d(xmm3);
3814 masm->pop_d(xmm2);
3815 masm->pop_d(xmm1);
3816 }
3817 masm->pop_d(xmm0);
3818 if (InlineTypeReturnedAsFields) {
3819 masm->pop(r9);
3820 masm->pop(r8);
3821 masm->pop(rcx);
3822 masm->pop(rdx);
3823 masm->pop(rsi);
3824 masm->pop(rdi);
3825 }
3826 masm->pop_ppx(rax);
3827 }
3828
3829 address StubGenerator::generate_cont_thaw(StubId stub_id) {
3830 if (!Continuations::enabled()) return nullptr;
3831
3832 bool return_barrier;
3833 bool return_barrier_exception;
3834 Continuation::thaw_kind kind;
3835
3836 switch (stub_id) {
3837 case StubId::stubgen_cont_thaw_id:
3838 return_barrier = false;
3839 return_barrier_exception = false;
3840 kind = Continuation::thaw_top;
3841 break;
3842 case StubId::stubgen_cont_returnBarrier_id:
3843 return_barrier = true;
3844 return_barrier_exception = false;
3845 kind = Continuation::thaw_return_barrier;
3846 break;
3847 case StubId::stubgen_cont_returnBarrierExc_id:
3848 return_barrier = true;
3860 if (!return_barrier) {
3861 // Pop return address. If we don't do this, we get a drift,
3862 // where the bottom-most frozen frame continuously grows.
3863 __ pop(c_rarg3);
3864 } else {
3865 __ movptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset()));
3866 }
3867
3868 #ifdef ASSERT
3869 {
3870 Label L_good_sp;
3871 __ cmpptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset()));
3872 __ jcc(Assembler::equal, L_good_sp);
3873 __ stop("Incorrect rsp at thaw entry");
3874 __ BIND(L_good_sp);
3875 }
3876 #endif // ASSERT
3877
3878 if (return_barrier) {
3879 // Preserve possible return value from a method returning to the return barrier.
3880 save_return_registers(_masm);
3881 }
3882
3883 __ movptr(c_rarg0, r15_thread);
3884 __ movptr(c_rarg1, (return_barrier ? 1 : 0));
3885 __ call_VM_leaf(CAST_FROM_FN_PTR(address, Continuation::prepare_thaw), 2);
3886 __ movptr(rbx, rax);
3887
3888 if (return_barrier) {
3889 // Restore return value from a method returning to the return barrier.
3890 // No safepoint in the call to thaw, so even an oop return value should be OK.
3891 restore_return_registers(_masm);
3892 }
3893
3894 #ifdef ASSERT
3895 {
3896 Label L_good_sp;
3897 __ cmpptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset()));
3898 __ jcc(Assembler::equal, L_good_sp);
3899 __ stop("Incorrect rsp after prepare thaw");
3900 __ BIND(L_good_sp);
3901 }
3902 #endif // ASSERT
3903
3904 // rbx contains the size of the frames to thaw, 0 if overflow or no more frames
3905 Label L_thaw_success;
3906 __ testptr(rbx, rbx);
3907 __ jccb(Assembler::notZero, L_thaw_success);
3908 __ jump(RuntimeAddress(SharedRuntime::throw_StackOverflowError_entry()));
3909 __ bind(L_thaw_success);
3910
3911 // Make room for the thawed frames and align the stack.
3912 __ subptr(rsp, rbx);
3913 __ andptr(rsp, -StackAlignmentInBytes);
3914
3915 if (return_barrier) {
3916 // Preserve possible return value from a method returning to the return barrier. (Again.)
3917 save_return_registers(_masm);
3918 }
3919
3920 // If we want, we can templatize thaw by kind, and have three different entries.
3921 __ movptr(c_rarg0, r15_thread);
3922 __ movptr(c_rarg1, kind);
3923 __ call_VM_leaf(Continuation::thaw_entry(), 2);
3924 __ movptr(rbx, rax);
3925
3926 if (return_barrier) {
3927 // Restore return value from a method returning to the return barrier. (Again.)
3928 // No safepoint in the call to thaw, so even an oop return value should be OK.
3929 restore_return_registers(_masm);
3930 } else {
3931 // Return 0 (success) from doYield.
3932 __ xorptr(rax, rax);
3933 }
3934
3935 // After thawing, rbx is the SP of the yielding frame.
3936 // Move there, and then to saved RBP slot.
3937 __ movptr(rsp, rbx);
3938 __ subptr(rsp, 2*wordSize);
3939
3940 if (return_barrier_exception) {
3941 __ movptr(c_rarg0, r15_thread);
3942 __ movptr(c_rarg1, Address(rsp, wordSize)); // return address
3943
3944 // rax still holds the original exception oop, save it before the call
3945 __ push_ppx(rax);
3946
3947 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), 2);
3948 __ movptr(rbx, rax);
3949
4116
4117 void StubGenerator::generate_initial_stubs() {
4118 // Generates all stubs and initializes the entry points
4119
4120 // This platform-specific settings are needed by generate_call_stub()
4121 create_control_words();
4122
4123 // Initialize table for unsafe copy memeory check.
4124 if (UnsafeMemoryAccess::_table == nullptr) {
4125 UnsafeMemoryAccess::create_table(16 + 4); // 16 for copyMemory; 4 for setMemory
4126 }
4127
4128 // entry points that exist in all platforms Note: This is code
4129 // that could be shared among different platforms - however the
4130 // benefit seems to be smaller than the disadvantage of having a
4131 // much more complicated generator structure. See also comment in
4132 // stubRoutines.hpp.
4133
4134 StubRoutines::_forward_exception_entry = generate_forward_exception();
4135
4136 // Generate these first because they are called from other stubs
4137 if (InlineTypeReturnedAsFields) {
4138 StubRoutines::_load_inline_type_fields_in_regs =
4139 generate_return_value_stub(CAST_FROM_FN_PTR(address, SharedRuntime::load_inline_type_fields_in_regs),
4140 "load_inline_type_fields_in_regs", false);
4141 StubRoutines::_store_inline_type_fields_to_buf =
4142 generate_return_value_stub(CAST_FROM_FN_PTR(address, SharedRuntime::store_inline_type_fields_to_buf),
4143 "store_inline_type_fields_to_buf", true);
4144 }
4145
4146 StubRoutines::_call_stub_entry =
4147 generate_call_stub(StubRoutines::_call_stub_return_address);
4148
4149 // is referenced by megamorphic call
4150 StubRoutines::_catch_exception_entry = generate_catch_exception();
4151
4152 // platform dependent
4153 StubRoutines::x86::_verify_mxcsr_entry = generate_verify_mxcsr();
4154
4155 StubRoutines::x86::_f2i_fixup = generate_f2i_fixup();
4156 StubRoutines::x86::_f2l_fixup = generate_f2l_fixup();
4157 StubRoutines::x86::_d2i_fixup = generate_d2i_fixup();
4158 StubRoutines::x86::_d2l_fixup = generate_d2l_fixup();
4159
4160 StubRoutines::x86::_float_sign_mask = generate_fp_mask(StubId::stubgen_float_sign_mask_id, 0x7FFFFFFF7FFFFFFF);
4161 StubRoutines::x86::_float_sign_flip = generate_fp_mask(StubId::stubgen_float_sign_flip_id, 0x8000000080000000);
4162 StubRoutines::x86::_double_sign_mask = generate_fp_mask(StubId::stubgen_double_sign_mask_id, 0x7FFFFFFFFFFFFFFF);
4163 StubRoutines::x86::_double_sign_flip = generate_fp_mask(StubId::stubgen_double_sign_flip_id, 0x8000000000000000);
4164
4165 if (UseCRC32Intrinsics) {
4169 if (UseCRC32CIntrinsics) {
4170 bool supports_clmul = VM_Version::supports_clmul();
4171 StubRoutines::_updateBytesCRC32C = generate_updateBytesCRC32C(supports_clmul);
4172 }
4173
4174 if (VM_Version::supports_float16()) {
4175 // For results consistency both intrinsics should be enabled.
4176 // vmIntrinsics checks InlineIntrinsics flag, no need to check it here.
4177 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_float16ToFloat) &&
4178 vmIntrinsics::is_intrinsic_available(vmIntrinsics::_floatToFloat16)) {
4179 StubRoutines::_hf2f = generate_float16ToFloat();
4180 StubRoutines::_f2hf = generate_floatToFloat16();
4181 }
4182 }
4183
4184 generate_libm_stubs();
4185
4186 StubRoutines::_fmod = generate_libmFmod(); // from stubGenerator_x86_64_fmod.cpp
4187 }
4188
4189 // Call here from the interpreter or compiled code to either load
4190 // multiple returned values from the inline type instance being
4191 // returned to registers or to store returned values to a newly
4192 // allocated inline type instance.
4193 // Register is a class, but it would be assigned numerical value.
4194 // "0" is assigned for xmm0. Thus we need to ignore -Wnonnull.
4195 PRAGMA_DIAG_PUSH
4196 PRAGMA_NONNULL_IGNORED
4197 address StubGenerator::generate_return_value_stub(address destination, const char* name, bool has_res) {
4198 // We need to save all registers the calling convention may use so
4199 // the runtime calls read or update those registers. This needs to
4200 // be in sync with SharedRuntime::java_return_convention().
4201 enum layout {
4202 pad_off = frame::arg_reg_save_area_bytes/BytesPerInt, pad_off_2,
4203 rax_off, rax_off_2,
4204 j_rarg5_off, j_rarg5_2,
4205 j_rarg4_off, j_rarg4_2,
4206 j_rarg3_off, j_rarg3_2,
4207 j_rarg2_off, j_rarg2_2,
4208 j_rarg1_off, j_rarg1_2,
4209 j_rarg0_off, j_rarg0_2,
4210 j_farg0_off, j_farg0_2,
4211 j_farg1_off, j_farg1_2,
4212 j_farg2_off, j_farg2_2,
4213 j_farg3_off, j_farg3_2,
4214 j_farg4_off, j_farg4_2,
4215 j_farg5_off, j_farg5_2,
4216 j_farg6_off, j_farg6_2,
4217 j_farg7_off, j_farg7_2,
4218 rbp_off, rbp_off_2,
4219 return_off, return_off_2,
4220
4221 framesize
4222 };
4223
4224 CodeBuffer buffer(name, 1000, 512);
4225 MacroAssembler* _masm = new MacroAssembler(&buffer);
4226
4227 int frame_size_in_bytes = align_up(framesize*BytesPerInt, 16);
4228 assert(frame_size_in_bytes == framesize*BytesPerInt, "misaligned");
4229 int frame_size_in_slots = frame_size_in_bytes / BytesPerInt;
4230 int frame_size_in_words = frame_size_in_bytes / wordSize;
4231
4232 OopMapSet *oop_maps = new OopMapSet();
4233 OopMap* map = new OopMap(frame_size_in_slots, 0);
4234
4235 map->set_callee_saved(VMRegImpl::stack2reg(rax_off), rax->as_VMReg());
4236 map->set_callee_saved(VMRegImpl::stack2reg(j_rarg5_off), j_rarg5->as_VMReg());
4237 map->set_callee_saved(VMRegImpl::stack2reg(j_rarg4_off), j_rarg4->as_VMReg());
4238 map->set_callee_saved(VMRegImpl::stack2reg(j_rarg3_off), j_rarg3->as_VMReg());
4239 map->set_callee_saved(VMRegImpl::stack2reg(j_rarg2_off), j_rarg2->as_VMReg());
4240 map->set_callee_saved(VMRegImpl::stack2reg(j_rarg1_off), j_rarg1->as_VMReg());
4241 map->set_callee_saved(VMRegImpl::stack2reg(j_rarg0_off), j_rarg0->as_VMReg());
4242 map->set_callee_saved(VMRegImpl::stack2reg(j_farg0_off), j_farg0->as_VMReg());
4243 map->set_callee_saved(VMRegImpl::stack2reg(j_farg1_off), j_farg1->as_VMReg());
4244 map->set_callee_saved(VMRegImpl::stack2reg(j_farg2_off), j_farg2->as_VMReg());
4245 map->set_callee_saved(VMRegImpl::stack2reg(j_farg3_off), j_farg3->as_VMReg());
4246 map->set_callee_saved(VMRegImpl::stack2reg(j_farg4_off), j_farg4->as_VMReg());
4247 map->set_callee_saved(VMRegImpl::stack2reg(j_farg5_off), j_farg5->as_VMReg());
4248 map->set_callee_saved(VMRegImpl::stack2reg(j_farg6_off), j_farg6->as_VMReg());
4249 map->set_callee_saved(VMRegImpl::stack2reg(j_farg7_off), j_farg7->as_VMReg());
4250
4251 int start = __ offset();
4252
4253 __ subptr(rsp, frame_size_in_bytes - 8 /* return address*/);
4254
4255 __ movptr(Address(rsp, rbp_off * BytesPerInt), rbp);
4256 __ movdbl(Address(rsp, j_farg7_off * BytesPerInt), j_farg7);
4257 __ movdbl(Address(rsp, j_farg6_off * BytesPerInt), j_farg6);
4258 __ movdbl(Address(rsp, j_farg5_off * BytesPerInt), j_farg5);
4259 __ movdbl(Address(rsp, j_farg4_off * BytesPerInt), j_farg4);
4260 __ movdbl(Address(rsp, j_farg3_off * BytesPerInt), j_farg3);
4261 __ movdbl(Address(rsp, j_farg2_off * BytesPerInt), j_farg2);
4262 __ movdbl(Address(rsp, j_farg1_off * BytesPerInt), j_farg1);
4263 __ movdbl(Address(rsp, j_farg0_off * BytesPerInt), j_farg0);
4264
4265 __ movptr(Address(rsp, j_rarg0_off * BytesPerInt), j_rarg0);
4266 __ movptr(Address(rsp, j_rarg1_off * BytesPerInt), j_rarg1);
4267 __ movptr(Address(rsp, j_rarg2_off * BytesPerInt), j_rarg2);
4268 __ movptr(Address(rsp, j_rarg3_off * BytesPerInt), j_rarg3);
4269 __ movptr(Address(rsp, j_rarg4_off * BytesPerInt), j_rarg4);
4270 __ movptr(Address(rsp, j_rarg5_off * BytesPerInt), j_rarg5);
4271 __ movptr(Address(rsp, rax_off * BytesPerInt), rax);
4272
4273 int frame_complete = __ offset();
4274
4275 __ set_last_Java_frame(noreg, noreg, nullptr, rscratch1);
4276
4277 __ mov(c_rarg0, r15_thread);
4278 __ mov(c_rarg1, rax);
4279
4280 __ call(RuntimeAddress(destination));
4281
4282 // Set an oopmap for the call site.
4283
4284 oop_maps->add_gc_map( __ offset() - start, map);
4285
4286 // clear last_Java_sp
4287 __ reset_last_Java_frame(false);
4288
4289 __ movptr(rbp, Address(rsp, rbp_off * BytesPerInt));
4290 __ movdbl(j_farg7, Address(rsp, j_farg7_off * BytesPerInt));
4291 __ movdbl(j_farg6, Address(rsp, j_farg6_off * BytesPerInt));
4292 __ movdbl(j_farg5, Address(rsp, j_farg5_off * BytesPerInt));
4293 __ movdbl(j_farg4, Address(rsp, j_farg4_off * BytesPerInt));
4294 __ movdbl(j_farg3, Address(rsp, j_farg3_off * BytesPerInt));
4295 __ movdbl(j_farg2, Address(rsp, j_farg2_off * BytesPerInt));
4296 __ movdbl(j_farg1, Address(rsp, j_farg1_off * BytesPerInt));
4297 __ movdbl(j_farg0, Address(rsp, j_farg0_off * BytesPerInt));
4298
4299 __ movptr(j_rarg0, Address(rsp, j_rarg0_off * BytesPerInt));
4300 __ movptr(j_rarg1, Address(rsp, j_rarg1_off * BytesPerInt));
4301 __ movptr(j_rarg2, Address(rsp, j_rarg2_off * BytesPerInt));
4302 __ movptr(j_rarg3, Address(rsp, j_rarg3_off * BytesPerInt));
4303 __ movptr(j_rarg4, Address(rsp, j_rarg4_off * BytesPerInt));
4304 __ movptr(j_rarg5, Address(rsp, j_rarg5_off * BytesPerInt));
4305 __ movptr(rax, Address(rsp, rax_off * BytesPerInt));
4306
4307 __ addptr(rsp, frame_size_in_bytes-8);
4308
4309 // check for pending exceptions
4310 Label pending;
4311 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
4312 __ jcc(Assembler::notEqual, pending);
4313
4314 if (has_res) {
4315 __ get_vm_result_oop(rax);
4316 }
4317
4318 __ ret(0);
4319
4320 __ bind(pending);
4321
4322 __ movptr(rax, Address(r15_thread, Thread::pending_exception_offset()));
4323 __ jump(RuntimeAddress(StubRoutines::forward_exception_entry()));
4324
4325 // -------------
4326 // make sure all code is generated
4327 _masm->flush();
4328
4329 RuntimeStub* stub = RuntimeStub::new_runtime_stub(name, &buffer, frame_complete, frame_size_in_words, oop_maps, false);
4330 return stub->entry_point();
4331 }
4332
4333 void StubGenerator::generate_continuation_stubs() {
4334 // Continuation stubs:
4335 StubRoutines::_cont_thaw = generate_cont_thaw();
4336 StubRoutines::_cont_returnBarrier = generate_cont_returnBarrier();
4337 StubRoutines::_cont_returnBarrierExc = generate_cont_returnBarrier_exception();
4338 StubRoutines::_cont_preempt_stub = generate_cont_preempt_stub();
4339 }
4340
4341 void StubGenerator::generate_final_stubs() {
4342 // Generates the rest of stubs and initializes the entry points
4343
4344 // support for verify_oop (must happen after universe_init)
4345 if (VerifyOops) {
4346 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop();
4347 }
4348
4349 // arraycopy stubs used by compilers
4350 generate_arraycopy_stubs();
4351
4352 StubRoutines::_method_entry_barrier = generate_method_entry_barrier();
|