/* * Copyright (c) 2003, 2025, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "asm/macroAssembler.hpp" #include "classfile/javaClasses.hpp" #include "classfile/vmIntrinsics.hpp" #include "compiler/oopMap.hpp" #include "gc/shared/barrierSet.hpp" #include "gc/shared/barrierSetAssembler.hpp" #include "gc/shared/barrierSetNMethod.hpp" #include "gc/shared/gc_globals.hpp" #include "memory/universe.hpp" #include "prims/jvmtiExport.hpp" #include "prims/upcallLinker.hpp" #include "runtime/arguments.hpp" #include "runtime/continuationEntry.hpp" #include "runtime/javaThread.hpp" #include "runtime/sharedRuntime.hpp" #include "runtime/stubRoutines.hpp" #include "stubGenerator_x86_64.hpp" #ifdef COMPILER2 #include "opto/runtime.hpp" #include "opto/c2_globals.hpp" #endif #if INCLUDE_JVMCI #include "jvmci/jvmci_globals.hpp" #endif // For a more detailed description of the stub routine structure // see the comment in stubRoutines.hpp #define __ _masm-> #define TIMES_OOP (UseCompressedOops ? Address::times_4 : Address::times_8) #ifdef PRODUCT #define BLOCK_COMMENT(str) /* nothing */ #else #define BLOCK_COMMENT(str) __ block_comment(str) #endif // PRODUCT #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") // // Linux Arguments: // c_rarg0: call wrapper address address // c_rarg1: result address // c_rarg2: result type BasicType // c_rarg3: method Method* // c_rarg4: (interpreter) entry point address // c_rarg5: parameters intptr_t* // 16(rbp): parameter size (in words) int // 24(rbp): thread Thread* // // [ return_from_Java ] <--- rsp // [ argument word n ] // ... // -12 [ argument word 1 ] // -11 [ saved r15 ] <--- rsp_after_call // -10 [ saved r14 ] // -9 [ saved r13 ] // -8 [ saved r12 ] // -7 [ saved rbx ] // -6 [ call wrapper ] // -5 [ result ] // -4 [ result type ] // -3 [ method ] // -2 [ entry point ] // -1 [ parameters ] // 0 [ saved rbp ] <--- rbp // 1 [ return address ] // 2 [ parameter size ] // 3 [ thread ] // // Windows Arguments: // c_rarg0: call wrapper address address // c_rarg1: result address // c_rarg2: result type BasicType // c_rarg3: method Method* // 48(rbp): (interpreter) entry point address // 56(rbp): parameters intptr_t* // 64(rbp): parameter size (in words) int // 72(rbp): thread Thread* // // [ return_from_Java ] <--- rsp // [ argument word n ] // ... // -28 [ argument word 1 ] // -27 [ saved xmm15 ] <--- rsp after_call // [ saved xmm7-xmm14 ] // -9 [ saved xmm6 ] (each xmm register takes 2 slots) // -7 [ saved r15 ] // -6 [ saved r14 ] // -5 [ saved r13 ] // -4 [ saved r12 ] // -3 [ saved rdi ] // -2 [ saved rsi ] // -1 [ saved rbx ] // 0 [ saved rbp ] <--- rbp // 1 [ return address ] // 2 [ call wrapper ] // 3 [ result ] // 4 [ result type ] // 5 [ method ] // 6 [ entry point ] // 7 [ parameters ] // 8 [ parameter size ] // 9 [ thread ] // // Windows reserves the callers stack space for arguments 1-4. // We spill c_rarg0-c_rarg3 to this space. // Call stub stack layout word offsets from rbp #ifdef _WIN64 enum call_stub_layout { xmm_save_first = 6, // save from xmm6 xmm_save_last = 15, // to xmm15 xmm_save_base = -9, rsp_after_call_off = xmm_save_base - 2 * (xmm_save_last - xmm_save_first), // -27 r15_off = -7, r14_off = -6, r13_off = -5, r12_off = -4, rdi_off = -3, rsi_off = -2, rbx_off = -1, rbp_off = 0, retaddr_off = 1, call_wrapper_off = 2, result_off = 3, result_type_off = 4, method_off = 5, entry_point_off = 6, parameters_off = 7, parameter_size_off = 8, thread_off = 9 }; static Address xmm_save(int reg) { assert(reg >= xmm_save_first && reg <= xmm_save_last, "XMM register number out of range"); return Address(rbp, (xmm_save_base - (reg - xmm_save_first) * 2) * wordSize); } #else // !_WIN64 enum call_stub_layout { rsp_after_call_off = -12, mxcsr_off = rsp_after_call_off, r15_off = -11, r14_off = -10, r13_off = -9, r12_off = -8, rbx_off = -7, call_wrapper_off = -6, result_off = -5, result_type_off = -4, method_off = -3, entry_point_off = -2, parameters_off = -1, rbp_off = 0, retaddr_off = 1, parameter_size_off = 2, thread_off = 3 }; #endif // _WIN64 address StubGenerator::generate_call_stub(address& return_address) { assert((int)frame::entry_frame_after_call_words == -(int)rsp_after_call_off + 1 && (int)frame::entry_frame_call_wrapper_offset == (int)call_wrapper_off, "adjust this code"); StubGenStubId stub_id = StubGenStubId::call_stub_id; StubCodeMark mark(this, stub_id); address start = __ pc(); // same as in generate_catch_exception()! const Address rsp_after_call(rbp, rsp_after_call_off * wordSize); const Address call_wrapper (rbp, call_wrapper_off * wordSize); const Address result (rbp, result_off * wordSize); const Address result_type (rbp, result_type_off * wordSize); const Address method (rbp, method_off * wordSize); const Address entry_point (rbp, entry_point_off * wordSize); const Address parameters (rbp, parameters_off * wordSize); const Address parameter_size(rbp, parameter_size_off * wordSize); // same as in generate_catch_exception()! const Address thread (rbp, thread_off * wordSize); const Address r15_save(rbp, r15_off * wordSize); const Address r14_save(rbp, r14_off * wordSize); const Address r13_save(rbp, r13_off * wordSize); const Address r12_save(rbp, r12_off * wordSize); const Address rbx_save(rbp, rbx_off * wordSize); // stub code __ enter(); __ subptr(rsp, -rsp_after_call_off * wordSize); // save register parameters #ifndef _WIN64 __ movptr(parameters, c_rarg5); // parameters __ movptr(entry_point, c_rarg4); // entry_point #endif __ movptr(method, c_rarg3); // method __ movl(result_type, c_rarg2); // result type __ movptr(result, c_rarg1); // result __ movptr(call_wrapper, c_rarg0); // call wrapper // save regs belonging to calling function __ movptr(rbx_save, rbx); __ movptr(r12_save, r12); __ movptr(r13_save, r13); __ movptr(r14_save, r14); __ movptr(r15_save, r15); #ifdef _WIN64 int last_reg = 15; for (int i = xmm_save_first; i <= last_reg; i++) { __ movdqu(xmm_save(i), as_XMMRegister(i)); } const Address rdi_save(rbp, rdi_off * wordSize); const Address rsi_save(rbp, rsi_off * wordSize); __ movptr(rsi_save, rsi); __ movptr(rdi_save, rdi); #else const Address mxcsr_save(rbp, mxcsr_off * wordSize); { Label skip_ldmx; __ cmp32_mxcsr_std(mxcsr_save, rax, rscratch1); __ jcc(Assembler::equal, skip_ldmx); ExternalAddress mxcsr_std(StubRoutines::x86::addr_mxcsr_std()); __ ldmxcsr(mxcsr_std, rscratch1); __ bind(skip_ldmx); } #endif // Load up thread register __ movptr(r15_thread, thread); __ reinit_heapbase(); #ifdef ASSERT // make sure we have no pending exceptions { Label L; __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), NULL_WORD); __ jcc(Assembler::equal, L); __ stop("StubRoutines::call_stub: entered with pending exception"); __ bind(L); } #endif // pass parameters if any BLOCK_COMMENT("pass parameters if any"); Label parameters_done; __ movl(c_rarg3, parameter_size); __ testl(c_rarg3, c_rarg3); __ jcc(Assembler::zero, parameters_done); Label loop; __ movptr(c_rarg2, parameters); // parameter pointer __ movl(c_rarg1, c_rarg3); // parameter counter is in c_rarg1 __ BIND(loop); __ movptr(rax, Address(c_rarg2, 0));// get parameter __ addptr(c_rarg2, wordSize); // advance to next parameter __ decrementl(c_rarg1); // decrement counter __ push(rax); // pass parameter __ jcc(Assembler::notZero, loop); // call Java function __ BIND(parameters_done); __ movptr(rbx, method); // get Method* __ movptr(c_rarg1, entry_point); // get entry_point __ mov(r13, rsp); // set sender sp BLOCK_COMMENT("call Java function"); __ call(c_rarg1); BLOCK_COMMENT("call_stub_return_address:"); return_address = __ pc(); // store result depending on type (everything that is not // T_OBJECT, T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT) __ movptr(c_rarg0, result); Label is_long, is_float, is_double, exit; __ movl(c_rarg1, result_type); __ cmpl(c_rarg1, T_OBJECT); __ jcc(Assembler::equal, is_long); __ cmpl(c_rarg1, T_LONG); __ jcc(Assembler::equal, is_long); __ cmpl(c_rarg1, T_FLOAT); __ jcc(Assembler::equal, is_float); __ cmpl(c_rarg1, T_DOUBLE); __ jcc(Assembler::equal, is_double); #ifdef ASSERT // make sure the type is INT { Label L; __ cmpl(c_rarg1, T_INT); __ jcc(Assembler::equal, L); __ stop("StubRoutines::call_stub: unexpected result type"); __ bind(L); } #endif // handle T_INT case __ movl(Address(c_rarg0, 0), rax); __ BIND(exit); // pop parameters __ lea(rsp, rsp_after_call); #ifdef ASSERT // verify that threads correspond { Label L1, L2, L3; __ cmpptr(r15_thread, thread); __ jcc(Assembler::equal, L1); __ stop("StubRoutines::call_stub: r15_thread is corrupted"); __ bind(L1); __ get_thread_slow(rbx); __ cmpptr(r15_thread, thread); __ jcc(Assembler::equal, L2); __ stop("StubRoutines::call_stub: r15_thread is modified by call"); __ bind(L2); __ cmpptr(r15_thread, rbx); __ jcc(Assembler::equal, L3); __ stop("StubRoutines::call_stub: threads must correspond"); __ bind(L3); } #endif __ pop_cont_fastpath(); // restore regs belonging to calling function #ifdef _WIN64 // emit the restores for xmm regs for (int i = xmm_save_first; i <= last_reg; i++) { __ movdqu(as_XMMRegister(i), xmm_save(i)); } #endif __ movptr(r15, r15_save); __ movptr(r14, r14_save); __ movptr(r13, r13_save); __ movptr(r12, r12_save); __ movptr(rbx, rbx_save); #ifdef _WIN64 __ movptr(rdi, rdi_save); __ movptr(rsi, rsi_save); #else __ ldmxcsr(mxcsr_save); #endif // restore rsp __ addptr(rsp, -rsp_after_call_off * wordSize); // return __ vzeroupper(); __ pop(rbp); __ ret(0); // handle return types different from T_INT __ BIND(is_long); __ movq(Address(c_rarg0, 0), rax); __ jmp(exit); __ BIND(is_float); __ movflt(Address(c_rarg0, 0), xmm0); __ jmp(exit); __ BIND(is_double); __ movdbl(Address(c_rarg0, 0), xmm0); __ jmp(exit); return start; } // Return point for a Java call if there's an exception thrown in // Java code. The exception is caught and transformed into a // pending exception stored in JavaThread that can be tested from // within the VM. // // Note: Usually the parameters are removed by the callee. In case // of an exception crossing an activation frame boundary, that is // not the case if the callee is compiled code => need to setup the // rsp. // // rax: exception oop address StubGenerator::generate_catch_exception() { StubGenStubId stub_id = StubGenStubId::catch_exception_id; StubCodeMark mark(this, stub_id); address start = __ pc(); // same as in generate_call_stub(): const Address rsp_after_call(rbp, rsp_after_call_off * wordSize); const Address thread (rbp, thread_off * wordSize); #ifdef ASSERT // verify that threads correspond { Label L1, L2, L3; __ cmpptr(r15_thread, thread); __ jcc(Assembler::equal, L1); __ stop("StubRoutines::catch_exception: r15_thread is corrupted"); __ bind(L1); __ get_thread_slow(rbx); __ cmpptr(r15_thread, thread); __ jcc(Assembler::equal, L2); __ stop("StubRoutines::catch_exception: r15_thread is modified by call"); __ bind(L2); __ cmpptr(r15_thread, rbx); __ jcc(Assembler::equal, L3); __ stop("StubRoutines::catch_exception: threads must correspond"); __ bind(L3); } #endif // set pending exception __ verify_oop(rax); __ movptr(Address(r15_thread, Thread::pending_exception_offset()), rax); __ lea(rscratch1, ExternalAddress((address)__FILE__)); __ movptr(Address(r15_thread, Thread::exception_file_offset()), rscratch1); __ movl(Address(r15_thread, Thread::exception_line_offset()), (int) __LINE__); // complete return to VM assert(StubRoutines::_call_stub_return_address != nullptr, "_call_stub_return_address must have been generated before"); __ jump(RuntimeAddress(StubRoutines::_call_stub_return_address)); return start; } // Continuation point for runtime calls returning with a pending // exception. The pending exception check happened in the runtime // or native call stub. The pending exception in Thread is // converted into a Java-level exception. // // Contract with Java-level exception handlers: // rax: exception // rdx: throwing pc // // NOTE: At entry of this stub, exception-pc must be on stack !! address StubGenerator::generate_forward_exception() { StubGenStubId stub_id = StubGenStubId::forward_exception_id; StubCodeMark mark(this, stub_id); address start = __ pc(); // Upon entry, the sp points to the return address returning into // Java (interpreted or compiled) code; i.e., the return address // becomes the throwing pc. // // Arguments pushed before the runtime call are still on the stack // but the exception handler will reset the stack pointer -> // ignore them. A potential result in registers can be ignored as // well. #ifdef ASSERT // make sure this code is only executed if there is a pending exception { Label L; __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), NULL_WORD); __ jcc(Assembler::notEqual, L); __ stop("StubRoutines::forward exception: no pending exception (1)"); __ bind(L); } #endif // compute exception handler into rbx __ movptr(c_rarg0, Address(rsp, 0)); BLOCK_COMMENT("call exception_handler_for_return_address"); __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), r15_thread, c_rarg0); __ mov(rbx, rax); // setup rax & rdx, remove return address & clear pending exception __ pop(rdx); __ movptr(rax, Address(r15_thread, Thread::pending_exception_offset())); __ movptr(Address(r15_thread, Thread::pending_exception_offset()), NULL_WORD); #ifdef ASSERT // make sure exception is set { Label L; __ testptr(rax, rax); __ jcc(Assembler::notEqual, L); __ stop("StubRoutines::forward exception: no pending exception (2)"); __ bind(L); } #endif // continue at exception handler (return address removed) // rax: exception // rbx: exception handler // rdx: throwing pc __ verify_oop(rax); __ jmp(rbx); return start; } // Support for intptr_t OrderAccess::fence() // // Arguments : // // Result: address StubGenerator::generate_orderaccess_fence() { StubGenStubId stub_id = StubGenStubId::fence_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ membar(Assembler::StoreLoad); __ ret(0); return start; } // Support for intptr_t get_previous_sp() // // This routine is used to find the previous stack pointer for the // caller. address StubGenerator::generate_get_previous_sp() { StubGenStubId stub_id = StubGenStubId::get_previous_sp_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ movptr(rax, rsp); __ addptr(rax, 8); // return address is at the top of the stack. __ ret(0); return start; } //---------------------------------------------------------------------------------------------------- // Support for void verify_mxcsr() // // This routine is used with -Xcheck:jni to verify that native // JNI code does not return to Java code without restoring the // MXCSR register to our expected state. address StubGenerator::generate_verify_mxcsr() { StubGenStubId stub_id = StubGenStubId::verify_mxcsr_id; StubCodeMark mark(this, stub_id); address start = __ pc(); const Address mxcsr_save(rsp, 0); if (CheckJNICalls) { Label ok_ret; ExternalAddress mxcsr_std(StubRoutines::x86::addr_mxcsr_std()); __ push(rax); __ subptr(rsp, wordSize); // allocate a temp location __ cmp32_mxcsr_std(mxcsr_save, rax, rscratch1); __ jcc(Assembler::equal, ok_ret); __ warn("MXCSR changed by native JNI code, use -XX:+RestoreMXCSROnJNICall"); __ ldmxcsr(mxcsr_std, rscratch1); __ bind(ok_ret); __ addptr(rsp, wordSize); __ pop(rax); } __ ret(0); return start; } address StubGenerator::generate_f2i_fixup() { StubGenStubId stub_id = StubGenStubId::f2i_fixup_id; StubCodeMark mark(this, stub_id); Address inout(rsp, 5 * wordSize); // return address + 4 saves address start = __ pc(); Label L; __ push(rax); __ push(c_rarg3); __ push(c_rarg2); __ push(c_rarg1); __ movl(rax, 0x7f800000); __ xorl(c_rarg3, c_rarg3); __ movl(c_rarg2, inout); __ movl(c_rarg1, c_rarg2); __ andl(c_rarg1, 0x7fffffff); __ cmpl(rax, c_rarg1); // NaN? -> 0 __ jcc(Assembler::negative, L); __ testl(c_rarg2, c_rarg2); // signed ? min_jint : max_jint __ movl(c_rarg3, 0x80000000); __ movl(rax, 0x7fffffff); __ cmovl(Assembler::positive, c_rarg3, rax); __ bind(L); __ movptr(inout, c_rarg3); __ pop(c_rarg1); __ pop(c_rarg2); __ pop(c_rarg3); __ pop(rax); __ ret(0); return start; } address StubGenerator::generate_f2l_fixup() { StubGenStubId stub_id = StubGenStubId::f2l_fixup_id; StubCodeMark mark(this, stub_id); Address inout(rsp, 5 * wordSize); // return address + 4 saves address start = __ pc(); Label L; __ push(rax); __ push(c_rarg3); __ push(c_rarg2); __ push(c_rarg1); __ movl(rax, 0x7f800000); __ xorl(c_rarg3, c_rarg3); __ movl(c_rarg2, inout); __ movl(c_rarg1, c_rarg2); __ andl(c_rarg1, 0x7fffffff); __ cmpl(rax, c_rarg1); // NaN? -> 0 __ jcc(Assembler::negative, L); __ testl(c_rarg2, c_rarg2); // signed ? min_jlong : max_jlong __ mov64(c_rarg3, 0x8000000000000000); __ mov64(rax, 0x7fffffffffffffff); __ cmov(Assembler::positive, c_rarg3, rax); __ bind(L); __ movptr(inout, c_rarg3); __ pop(c_rarg1); __ pop(c_rarg2); __ pop(c_rarg3); __ pop(rax); __ ret(0); return start; } address StubGenerator::generate_d2i_fixup() { StubGenStubId stub_id = StubGenStubId::d2i_fixup_id; StubCodeMark mark(this, stub_id); Address inout(rsp, 6 * wordSize); // return address + 5 saves address start = __ pc(); Label L; __ push(rax); __ push(c_rarg3); __ push(c_rarg2); __ push(c_rarg1); __ push(c_rarg0); __ movl(rax, 0x7ff00000); __ movq(c_rarg2, inout); __ movl(c_rarg3, c_rarg2); __ mov(c_rarg1, c_rarg2); __ mov(c_rarg0, c_rarg2); __ negl(c_rarg3); __ shrptr(c_rarg1, 0x20); __ orl(c_rarg3, c_rarg2); __ andl(c_rarg1, 0x7fffffff); __ xorl(c_rarg2, c_rarg2); __ shrl(c_rarg3, 0x1f); __ orl(c_rarg1, c_rarg3); __ cmpl(rax, c_rarg1); __ jcc(Assembler::negative, L); // NaN -> 0 __ testptr(c_rarg0, c_rarg0); // signed ? min_jint : max_jint __ movl(c_rarg2, 0x80000000); __ movl(rax, 0x7fffffff); __ cmov(Assembler::positive, c_rarg2, rax); __ bind(L); __ movptr(inout, c_rarg2); __ pop(c_rarg0); __ pop(c_rarg1); __ pop(c_rarg2); __ pop(c_rarg3); __ pop(rax); __ ret(0); return start; } address StubGenerator::generate_d2l_fixup() { StubGenStubId stub_id = StubGenStubId::d2l_fixup_id; StubCodeMark mark(this, stub_id); Address inout(rsp, 6 * wordSize); // return address + 5 saves address start = __ pc(); Label L; __ push(rax); __ push(c_rarg3); __ push(c_rarg2); __ push(c_rarg1); __ push(c_rarg0); __ movl(rax, 0x7ff00000); __ movq(c_rarg2, inout); __ movl(c_rarg3, c_rarg2); __ mov(c_rarg1, c_rarg2); __ mov(c_rarg0, c_rarg2); __ negl(c_rarg3); __ shrptr(c_rarg1, 0x20); __ orl(c_rarg3, c_rarg2); __ andl(c_rarg1, 0x7fffffff); __ xorl(c_rarg2, c_rarg2); __ shrl(c_rarg3, 0x1f); __ orl(c_rarg1, c_rarg3); __ cmpl(rax, c_rarg1); __ jcc(Assembler::negative, L); // NaN -> 0 __ testq(c_rarg0, c_rarg0); // signed ? min_jlong : max_jlong __ mov64(c_rarg2, 0x8000000000000000); __ mov64(rax, 0x7fffffffffffffff); __ cmovq(Assembler::positive, c_rarg2, rax); __ bind(L); __ movq(inout, c_rarg2); __ pop(c_rarg0); __ pop(c_rarg1); __ pop(c_rarg2); __ pop(c_rarg3); __ pop(rax); __ ret(0); return start; } address StubGenerator::generate_count_leading_zeros_lut() { __ align64(); StubGenStubId stub_id = StubGenStubId::vector_count_leading_zeros_lut_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(0x0101010102020304, relocInfo::none); __ emit_data64(0x0000000000000000, relocInfo::none); __ emit_data64(0x0101010102020304, relocInfo::none); __ emit_data64(0x0000000000000000, relocInfo::none); __ emit_data64(0x0101010102020304, relocInfo::none); __ emit_data64(0x0000000000000000, relocInfo::none); __ emit_data64(0x0101010102020304, relocInfo::none); __ emit_data64(0x0000000000000000, relocInfo::none); return start; } address StubGenerator::generate_popcount_avx_lut() { __ align64(); StubGenStubId stub_id = StubGenStubId::vector_popcount_lut_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(0x0302020102010100, relocInfo::none); __ emit_data64(0x0403030203020201, relocInfo::none); __ emit_data64(0x0302020102010100, relocInfo::none); __ emit_data64(0x0403030203020201, relocInfo::none); __ emit_data64(0x0302020102010100, relocInfo::none); __ emit_data64(0x0403030203020201, relocInfo::none); __ emit_data64(0x0302020102010100, relocInfo::none); __ emit_data64(0x0403030203020201, relocInfo::none); return start; } address StubGenerator::generate_iota_indices() { __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::vector_iota_indices_id; StubCodeMark mark(this, stub_id); address start = __ pc(); // B __ emit_data64(0x0706050403020100, relocInfo::none); __ emit_data64(0x0F0E0D0C0B0A0908, relocInfo::none); __ emit_data64(0x1716151413121110, relocInfo::none); __ emit_data64(0x1F1E1D1C1B1A1918, relocInfo::none); __ emit_data64(0x2726252423222120, relocInfo::none); __ emit_data64(0x2F2E2D2C2B2A2928, relocInfo::none); __ emit_data64(0x3736353433323130, relocInfo::none); __ emit_data64(0x3F3E3D3C3B3A3938, relocInfo::none); // W __ emit_data64(0x0003000200010000, relocInfo::none); __ emit_data64(0x0007000600050004, relocInfo::none); __ emit_data64(0x000B000A00090008, relocInfo::none); __ emit_data64(0x000F000E000D000C, relocInfo::none); __ emit_data64(0x0013001200110010, relocInfo::none); __ emit_data64(0x0017001600150014, relocInfo::none); __ emit_data64(0x001B001A00190018, relocInfo::none); __ emit_data64(0x001F001E001D001C, relocInfo::none); // D __ emit_data64(0x0000000100000000, relocInfo::none); __ emit_data64(0x0000000300000002, relocInfo::none); __ emit_data64(0x0000000500000004, relocInfo::none); __ emit_data64(0x0000000700000006, relocInfo::none); __ emit_data64(0x0000000900000008, relocInfo::none); __ emit_data64(0x0000000B0000000A, relocInfo::none); __ emit_data64(0x0000000D0000000C, relocInfo::none); __ emit_data64(0x0000000F0000000E, relocInfo::none); // Q __ emit_data64(0x0000000000000000, relocInfo::none); __ emit_data64(0x0000000000000001, relocInfo::none); __ emit_data64(0x0000000000000002, relocInfo::none); __ emit_data64(0x0000000000000003, relocInfo::none); __ emit_data64(0x0000000000000004, relocInfo::none); __ emit_data64(0x0000000000000005, relocInfo::none); __ emit_data64(0x0000000000000006, relocInfo::none); __ emit_data64(0x0000000000000007, relocInfo::none); // D - FP __ emit_data64(0x3F80000000000000, relocInfo::none); // 0.0f, 1.0f __ emit_data64(0x4040000040000000, relocInfo::none); // 2.0f, 3.0f __ emit_data64(0x40A0000040800000, relocInfo::none); // 4.0f, 5.0f __ emit_data64(0x40E0000040C00000, relocInfo::none); // 6.0f, 7.0f __ emit_data64(0x4110000041000000, relocInfo::none); // 8.0f, 9.0f __ emit_data64(0x4130000041200000, relocInfo::none); // 10.0f, 11.0f __ emit_data64(0x4150000041400000, relocInfo::none); // 12.0f, 13.0f __ emit_data64(0x4170000041600000, relocInfo::none); // 14.0f, 15.0f // Q - FP __ emit_data64(0x0000000000000000, relocInfo::none); // 0.0d __ emit_data64(0x3FF0000000000000, relocInfo::none); // 1.0d __ emit_data64(0x4000000000000000, relocInfo::none); // 2.0d __ emit_data64(0x4008000000000000, relocInfo::none); // 3.0d __ emit_data64(0x4010000000000000, relocInfo::none); // 4.0d __ emit_data64(0x4014000000000000, relocInfo::none); // 5.0d __ emit_data64(0x4018000000000000, relocInfo::none); // 6.0d __ emit_data64(0x401c000000000000, relocInfo::none); // 7.0d return start; } address StubGenerator::generate_vector_reverse_bit_lut() { __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::vector_reverse_bit_lut_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(0x0E060A020C040800, relocInfo::none); __ emit_data64(0x0F070B030D050901, relocInfo::none); __ emit_data64(0x0E060A020C040800, relocInfo::none); __ emit_data64(0x0F070B030D050901, relocInfo::none); __ emit_data64(0x0E060A020C040800, relocInfo::none); __ emit_data64(0x0F070B030D050901, relocInfo::none); __ emit_data64(0x0E060A020C040800, relocInfo::none); __ emit_data64(0x0F070B030D050901, relocInfo::none); return start; } address StubGenerator::generate_vector_reverse_byte_perm_mask_long() { __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::vector_reverse_byte_perm_mask_long_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(0x0001020304050607, relocInfo::none); __ emit_data64(0x08090A0B0C0D0E0F, relocInfo::none); __ emit_data64(0x0001020304050607, relocInfo::none); __ emit_data64(0x08090A0B0C0D0E0F, relocInfo::none); __ emit_data64(0x0001020304050607, relocInfo::none); __ emit_data64(0x08090A0B0C0D0E0F, relocInfo::none); __ emit_data64(0x0001020304050607, relocInfo::none); __ emit_data64(0x08090A0B0C0D0E0F, relocInfo::none); return start; } address StubGenerator::generate_vector_reverse_byte_perm_mask_int() { __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::vector_reverse_byte_perm_mask_int_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(0x0405060700010203, relocInfo::none); __ emit_data64(0x0C0D0E0F08090A0B, relocInfo::none); __ emit_data64(0x0405060700010203, relocInfo::none); __ emit_data64(0x0C0D0E0F08090A0B, relocInfo::none); __ emit_data64(0x0405060700010203, relocInfo::none); __ emit_data64(0x0C0D0E0F08090A0B, relocInfo::none); __ emit_data64(0x0405060700010203, relocInfo::none); __ emit_data64(0x0C0D0E0F08090A0B, relocInfo::none); return start; } address StubGenerator::generate_vector_reverse_byte_perm_mask_short() { __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::vector_reverse_byte_perm_mask_short_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(0x0607040502030001, relocInfo::none); __ emit_data64(0x0E0F0C0D0A0B0809, relocInfo::none); __ emit_data64(0x0607040502030001, relocInfo::none); __ emit_data64(0x0E0F0C0D0A0B0809, relocInfo::none); __ emit_data64(0x0607040502030001, relocInfo::none); __ emit_data64(0x0E0F0C0D0A0B0809, relocInfo::none); __ emit_data64(0x0607040502030001, relocInfo::none); __ emit_data64(0x0E0F0C0D0A0B0809, relocInfo::none); return start; } address StubGenerator::generate_vector_byte_shuffle_mask() { __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::vector_byte_shuffle_mask_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(0x7070707070707070, relocInfo::none); __ emit_data64(0x7070707070707070, relocInfo::none); __ emit_data64(0xF0F0F0F0F0F0F0F0, relocInfo::none); __ emit_data64(0xF0F0F0F0F0F0F0F0, relocInfo::none); return start; } address StubGenerator::generate_fp_mask(StubGenStubId stub_id, int64_t mask) { __ align(CodeEntryAlignment); StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64( mask, relocInfo::none ); __ emit_data64( mask, relocInfo::none ); return start; } address StubGenerator::generate_compress_perm_table(StubGenStubId stub_id) { int esize; switch (stub_id) { case compress_perm_table32_id: esize = 32; break; case compress_perm_table64_id: esize = 64; break; default: ShouldNotReachHere(); } __ align(CodeEntryAlignment); StubCodeMark mark(this, stub_id); address start = __ pc(); if (esize == 32) { // Loop to generate 256 x 8 int compression permute index table. A row is // accessed using 8 bit index computed using vector mask. An entry in // a row holds either a valid permute index corresponding to set bit position // or a -1 (default) value. for (int mask = 0; mask < 256; mask++) { int ctr = 0; for (int j = 0; j < 8; j++) { if (mask & (1 << j)) { __ emit_data(j, relocInfo::none); ctr++; } } for (; ctr < 8; ctr++) { __ emit_data(-1, relocInfo::none); } } } else { assert(esize == 64, ""); // Loop to generate 16 x 4 long compression permute index table. A row is // accessed using 4 bit index computed using vector mask. An entry in // a row holds either a valid permute index pair for a quadword corresponding // to set bit position or a -1 (default) value. for (int mask = 0; mask < 16; mask++) { int ctr = 0; for (int j = 0; j < 4; j++) { if (mask & (1 << j)) { __ emit_data(2 * j, relocInfo::none); __ emit_data(2 * j + 1, relocInfo::none); ctr++; } } for (; ctr < 4; ctr++) { __ emit_data64(-1L, relocInfo::none); } } } return start; } address StubGenerator::generate_expand_perm_table(StubGenStubId stub_id) { int esize; switch (stub_id) { case expand_perm_table32_id: esize = 32; break; case expand_perm_table64_id: esize = 64; break; default: ShouldNotReachHere(); } __ align(CodeEntryAlignment); StubCodeMark mark(this, stub_id); address start = __ pc(); if (esize == 32) { // Loop to generate 256 x 8 int expand permute index table. A row is accessed // using 8 bit index computed using vector mask. An entry in a row holds either // a valid permute index (starting from least significant lane) placed at poisition // corresponding to set bit position or a -1 (default) value. for (int mask = 0; mask < 256; mask++) { int ctr = 0; for (int j = 0; j < 8; j++) { if (mask & (1 << j)) { __ emit_data(ctr++, relocInfo::none); } else { __ emit_data(-1, relocInfo::none); } } } } else { assert(esize == 64, ""); // Loop to generate 16 x 4 long expand permute index table. A row is accessed // using 4 bit index computed using vector mask. An entry in a row holds either // a valid doubleword permute index pair representing a quadword index (starting // from least significant lane) placed at poisition corresponding to set bit // position or a -1 (default) value. for (int mask = 0; mask < 16; mask++) { int ctr = 0; for (int j = 0; j < 4; j++) { if (mask & (1 << j)) { __ emit_data(2 * ctr, relocInfo::none); __ emit_data(2 * ctr + 1, relocInfo::none); ctr++; } else { __ emit_data64(-1L, relocInfo::none); } } } } return start; } address StubGenerator::generate_vector_mask(StubGenStubId stub_id, int64_t mask) { __ align(CodeEntryAlignment); StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(mask, relocInfo::none); __ emit_data64(mask, relocInfo::none); __ emit_data64(mask, relocInfo::none); __ emit_data64(mask, relocInfo::none); __ emit_data64(mask, relocInfo::none); __ emit_data64(mask, relocInfo::none); __ emit_data64(mask, relocInfo::none); __ emit_data64(mask, relocInfo::none); return start; } address StubGenerator::generate_vector_byte_perm_mask() { __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::vector_byte_perm_mask_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(0x0000000000000001, relocInfo::none); __ emit_data64(0x0000000000000003, relocInfo::none); __ emit_data64(0x0000000000000005, relocInfo::none); __ emit_data64(0x0000000000000007, relocInfo::none); __ emit_data64(0x0000000000000000, relocInfo::none); __ emit_data64(0x0000000000000002, relocInfo::none); __ emit_data64(0x0000000000000004, relocInfo::none); __ emit_data64(0x0000000000000006, relocInfo::none); return start; } address StubGenerator::generate_vector_fp_mask(StubGenStubId stub_id, int64_t mask) { __ align(CodeEntryAlignment); StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(mask, relocInfo::none); __ emit_data64(mask, relocInfo::none); __ emit_data64(mask, relocInfo::none); __ emit_data64(mask, relocInfo::none); __ emit_data64(mask, relocInfo::none); __ emit_data64(mask, relocInfo::none); __ emit_data64(mask, relocInfo::none); __ emit_data64(mask, relocInfo::none); return start; } address StubGenerator::generate_vector_custom_i32(StubGenStubId stub_id, Assembler::AvxVectorLen len, int32_t val0, int32_t val1, int32_t val2, int32_t val3, int32_t val4, int32_t val5, int32_t val6, int32_t val7, int32_t val8, int32_t val9, int32_t val10, int32_t val11, int32_t val12, int32_t val13, int32_t val14, int32_t val15) { __ align(CodeEntryAlignment); StubCodeMark mark(this, stub_id); address start = __ pc(); assert(len != Assembler::AVX_NoVec, "vector len must be specified"); __ emit_data(val0, relocInfo::none, 0); __ emit_data(val1, relocInfo::none, 0); __ emit_data(val2, relocInfo::none, 0); __ emit_data(val3, relocInfo::none, 0); if (len >= Assembler::AVX_256bit) { __ emit_data(val4, relocInfo::none, 0); __ emit_data(val5, relocInfo::none, 0); __ emit_data(val6, relocInfo::none, 0); __ emit_data(val7, relocInfo::none, 0); if (len >= Assembler::AVX_512bit) { __ emit_data(val8, relocInfo::none, 0); __ emit_data(val9, relocInfo::none, 0); __ emit_data(val10, relocInfo::none, 0); __ emit_data(val11, relocInfo::none, 0); __ emit_data(val12, relocInfo::none, 0); __ emit_data(val13, relocInfo::none, 0); __ emit_data(val14, relocInfo::none, 0); __ emit_data(val15, relocInfo::none, 0); } } return start; } // Non-destructive plausibility checks for oops // // Arguments: // all args on stack! // // Stack after saving c_rarg3: // [tos + 0]: saved c_rarg3 // [tos + 1]: saved c_rarg2 // [tos + 2]: saved r12 (several TemplateTable methods use it) // [tos + 3]: saved flags // [tos + 4]: return address // * [tos + 5]: error message (char*) // * [tos + 6]: object to verify (oop) // * [tos + 7]: saved rax - saved by caller and bashed // * [tos + 8]: saved r10 (rscratch1) - saved by caller // * = popped on exit address StubGenerator::generate_verify_oop() { StubGenStubId stub_id = StubGenStubId::verify_oop_id; StubCodeMark mark(this, stub_id); address start = __ pc(); Label exit, error; __ pushf(); __ incrementl(ExternalAddress((address) StubRoutines::verify_oop_count_addr()), rscratch1); __ push(r12); // save c_rarg2 and c_rarg3 __ push(c_rarg2); __ push(c_rarg3); enum { // After previous pushes. oop_to_verify = 6 * wordSize, saved_rax = 7 * wordSize, saved_r10 = 8 * wordSize, // Before the call to MacroAssembler::debug(), see below. return_addr = 16 * wordSize, error_msg = 17 * wordSize }; // get object __ movptr(rax, Address(rsp, oop_to_verify)); // make sure object is 'reasonable' __ testptr(rax, rax); __ jcc(Assembler::zero, exit); // if obj is null it is OK BarrierSetAssembler* bs_asm = BarrierSet::barrier_set()->barrier_set_assembler(); bs_asm->check_oop(_masm, rax, c_rarg2, c_rarg3, error); // return if everything seems ok __ bind(exit); __ movptr(rax, Address(rsp, saved_rax)); // get saved rax back __ movptr(rscratch1, Address(rsp, saved_r10)); // get saved r10 back __ pop(c_rarg3); // restore c_rarg3 __ pop(c_rarg2); // restore c_rarg2 __ pop(r12); // restore r12 __ popf(); // restore flags __ ret(4 * wordSize); // pop caller saved stuff // handle errors __ bind(error); __ movptr(rax, Address(rsp, saved_rax)); // get saved rax back __ movptr(rscratch1, Address(rsp, saved_r10)); // get saved r10 back __ pop(c_rarg3); // get saved c_rarg3 back __ pop(c_rarg2); // get saved c_rarg2 back __ pop(r12); // get saved r12 back __ popf(); // get saved flags off stack -- // will be ignored __ pusha(); // push registers // (rip is already // already pushed) // debug(char* msg, int64_t pc, int64_t regs[]) // We've popped the registers we'd saved (c_rarg3, c_rarg2 and flags), and // pushed all the registers, so now the stack looks like: // [tos + 0] 16 saved registers // [tos + 16] return address // * [tos + 17] error message (char*) // * [tos + 18] object to verify (oop) // * [tos + 19] saved rax - saved by caller and bashed // * [tos + 20] saved r10 (rscratch1) - saved by caller // * = popped on exit __ movptr(c_rarg0, Address(rsp, error_msg)); // pass address of error message __ movptr(c_rarg1, Address(rsp, return_addr)); // pass return address __ movq(c_rarg2, rsp); // pass address of regs on stack __ mov(r12, rsp); // remember rsp __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows __ andptr(rsp, -16); // align stack as required by ABI BLOCK_COMMENT("call MacroAssembler::debug"); __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, MacroAssembler::debug64))); __ hlt(); return start; } // Shuffle first three arg regs on Windows into Linux/Solaris locations. // // Outputs: // rdi - rcx // rsi - rdx // rdx - r8 // rcx - r9 // // Registers r9 and r10 are used to save rdi and rsi on Windows, which latter // are non-volatile. r9 and r10 should not be used by the caller. // void StubGenerator::setup_arg_regs(int nargs) { const Register saved_rdi = r9; const Register saved_rsi = r10; assert(nargs == 3 || nargs == 4, "else fix"); #ifdef _WIN64 assert(c_rarg0 == rcx && c_rarg1 == rdx && c_rarg2 == r8 && c_rarg3 == r9, "unexpected argument registers"); if (nargs == 4) { __ mov(rax, r9); // r9 is also saved_rdi } __ movptr(saved_rdi, rdi); __ movptr(saved_rsi, rsi); __ mov(rdi, rcx); // c_rarg0 __ mov(rsi, rdx); // c_rarg1 __ mov(rdx, r8); // c_rarg2 if (nargs == 4) { __ mov(rcx, rax); // c_rarg3 (via rax) } #else assert(c_rarg0 == rdi && c_rarg1 == rsi && c_rarg2 == rdx && c_rarg3 == rcx, "unexpected argument registers"); #endif DEBUG_ONLY(_regs_in_thread = false;) } void StubGenerator::restore_arg_regs() { assert(!_regs_in_thread, "wrong call to restore_arg_regs"); const Register saved_rdi = r9; const Register saved_rsi = r10; #ifdef _WIN64 __ movptr(rdi, saved_rdi); __ movptr(rsi, saved_rsi); #endif } // This is used in places where r10 is a scratch register, and can // be adapted if r9 is needed also. void StubGenerator::setup_arg_regs_using_thread(int nargs) { const Register saved_r15 = r9; assert(nargs == 3 || nargs == 4, "else fix"); #ifdef _WIN64 if (nargs == 4) { __ mov(rax, r9); // r9 is also saved_r15 } __ mov(saved_r15, r15); // r15 is callee saved and needs to be restored __ get_thread_slow(r15_thread); assert(c_rarg0 == rcx && c_rarg1 == rdx && c_rarg2 == r8 && c_rarg3 == r9, "unexpected argument registers"); __ movptr(Address(r15_thread, in_bytes(JavaThread::windows_saved_rdi_offset())), rdi); __ movptr(Address(r15_thread, in_bytes(JavaThread::windows_saved_rsi_offset())), rsi); __ mov(rdi, rcx); // c_rarg0 __ mov(rsi, rdx); // c_rarg1 __ mov(rdx, r8); // c_rarg2 if (nargs == 4) { __ mov(rcx, rax); // c_rarg3 (via rax) } #else assert(c_rarg0 == rdi && c_rarg1 == rsi && c_rarg2 == rdx && c_rarg3 == rcx, "unexpected argument registers"); #endif DEBUG_ONLY(_regs_in_thread = true;) } void StubGenerator::restore_arg_regs_using_thread() { assert(_regs_in_thread, "wrong call to restore_arg_regs"); const Register saved_r15 = r9; #ifdef _WIN64 __ get_thread_slow(r15_thread); __ movptr(rsi, Address(r15_thread, in_bytes(JavaThread::windows_saved_rsi_offset()))); __ movptr(rdi, Address(r15_thread, in_bytes(JavaThread::windows_saved_rdi_offset()))); __ mov(r15, saved_r15); // r15 is callee saved and needs to be restored #endif } void StubGenerator::setup_argument_regs(BasicType type) { if (type == T_BYTE || type == T_SHORT) { setup_arg_regs(); // from => rdi, to => rsi, count => rdx // r9 and r10 may be used to save non-volatile registers } else { setup_arg_regs_using_thread(); // from => rdi, to => rsi, count => rdx // r9 is used to save r15_thread } } void StubGenerator::restore_argument_regs(BasicType type) { if (type == T_BYTE || type == T_SHORT) { restore_arg_regs(); } else { restore_arg_regs_using_thread(); } } address StubGenerator::generate_data_cache_writeback() { const Register src = c_rarg0; // source address __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::data_cache_writeback_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ enter(); __ cache_wb(Address(src, 0)); __ leave(); __ ret(0); return start; } address StubGenerator::generate_data_cache_writeback_sync() { const Register is_pre = c_rarg0; // pre or post sync __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::data_cache_writeback_sync_id; StubCodeMark mark(this, stub_id); // pre wbsync is a no-op // post wbsync translates to an sfence Label skip; address start = __ pc(); __ enter(); __ cmpl(is_pre, 0); __ jcc(Assembler::notEqual, skip); __ cache_wbsync(false); __ bind(skip); __ leave(); __ ret(0); return start; } // ofs and limit are use for multi-block byte array. // int com.sun.security.provider.MD5.implCompress(byte[] b, int ofs) address StubGenerator::generate_md5_implCompress(StubGenStubId stub_id) { bool multi_block; switch (stub_id) { case md5_implCompress_id: multi_block = false; break; case md5_implCompressMB_id: multi_block = true; break; default: ShouldNotReachHere(); } __ align(CodeEntryAlignment); StubCodeMark mark(this, stub_id); address start = __ pc(); const Register buf_param = r15; const Address state_param(rsp, 0 * wordSize); const Address ofs_param (rsp, 1 * wordSize ); const Address limit_param(rsp, 1 * wordSize + 4); __ enter(); __ push(rbx); __ push(rdi); __ push(rsi); __ push(r15); __ subptr(rsp, 2 * wordSize); __ movptr(buf_param, c_rarg0); __ movptr(state_param, c_rarg1); if (multi_block) { __ movl(ofs_param, c_rarg2); __ movl(limit_param, c_rarg3); } __ fast_md5(buf_param, state_param, ofs_param, limit_param, multi_block); __ addptr(rsp, 2 * wordSize); __ pop(r15); __ pop(rsi); __ pop(rdi); __ pop(rbx); __ leave(); __ ret(0); return start; } address StubGenerator::generate_upper_word_mask() { __ align64(); StubGenStubId stub_id = StubGenStubId::upper_word_mask_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(0x0000000000000000, relocInfo::none); __ emit_data64(0xFFFFFFFF00000000, relocInfo::none); return start; } address StubGenerator::generate_shuffle_byte_flip_mask() { __ align64(); StubGenStubId stub_id = StubGenStubId::shuffle_byte_flip_mask_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(0x08090a0b0c0d0e0f, relocInfo::none); __ emit_data64(0x0001020304050607, relocInfo::none); return start; } // ofs and limit are use for multi-block byte array. // int com.sun.security.provider.DigestBase.implCompressMultiBlock(byte[] b, int ofs, int limit) address StubGenerator::generate_sha1_implCompress(StubGenStubId stub_id) { bool multi_block; switch (stub_id) { case sha1_implCompress_id: multi_block = false; break; case sha1_implCompressMB_id: multi_block = true; break; default: ShouldNotReachHere(); } __ align(CodeEntryAlignment); StubCodeMark mark(this, stub_id); address start = __ pc(); Register buf = c_rarg0; Register state = c_rarg1; Register ofs = c_rarg2; Register limit = c_rarg3; const XMMRegister abcd = xmm0; const XMMRegister e0 = xmm1; const XMMRegister e1 = xmm2; const XMMRegister msg0 = xmm3; const XMMRegister msg1 = xmm4; const XMMRegister msg2 = xmm5; const XMMRegister msg3 = xmm6; const XMMRegister shuf_mask = xmm7; __ enter(); __ subptr(rsp, 4 * wordSize); __ fast_sha1(abcd, e0, e1, msg0, msg1, msg2, msg3, shuf_mask, buf, state, ofs, limit, rsp, multi_block); __ addptr(rsp, 4 * wordSize); __ leave(); __ ret(0); return start; } address StubGenerator::generate_pshuffle_byte_flip_mask() { __ align64(); StubGenStubId stub_id = StubGenStubId::pshuffle_byte_flip_mask_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(0x0405060700010203, relocInfo::none); __ emit_data64(0x0c0d0e0f08090a0b, relocInfo::none); if (VM_Version::supports_avx2()) { __ emit_data64(0x0405060700010203, relocInfo::none); // second copy __ emit_data64(0x0c0d0e0f08090a0b, relocInfo::none); // _SHUF_00BA __ emit_data64(0x0b0a090803020100, relocInfo::none); __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none); __ emit_data64(0x0b0a090803020100, relocInfo::none); __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none); // _SHUF_DC00 __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none); __ emit_data64(0x0b0a090803020100, relocInfo::none); __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none); __ emit_data64(0x0b0a090803020100, relocInfo::none); } return start; } //Mask for byte-swapping a couple of qwords in an XMM register using (v)pshufb. address StubGenerator::generate_pshuffle_byte_flip_mask_sha512() { __ align32(); StubGenStubId stub_id = StubGenStubId::pshuffle_byte_flip_mask_sha512_id; StubCodeMark mark(this, stub_id); address start = __ pc(); if (VM_Version::supports_avx2()) { __ emit_data64(0x0001020304050607, relocInfo::none); // PSHUFFLE_BYTE_FLIP_MASK __ emit_data64(0x08090a0b0c0d0e0f, relocInfo::none); __ emit_data64(0x1011121314151617, relocInfo::none); __ emit_data64(0x18191a1b1c1d1e1f, relocInfo::none); __ emit_data64(0x0000000000000000, relocInfo::none); //MASK_YMM_LO __ emit_data64(0x0000000000000000, relocInfo::none); __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none); __ emit_data64(0xFFFFFFFFFFFFFFFF, relocInfo::none); } return start; } // ofs and limit are use for multi-block byte array. // int com.sun.security.provider.DigestBase.implCompressMultiBlock(byte[] b, int ofs, int limit) address StubGenerator::generate_sha256_implCompress(StubGenStubId stub_id) { bool multi_block; switch (stub_id) { case sha256_implCompress_id: multi_block = false; break; case sha256_implCompressMB_id: multi_block = true; break; default: ShouldNotReachHere(); } assert(VM_Version::supports_sha() || VM_Version::supports_avx2(), ""); __ align(CodeEntryAlignment); StubCodeMark mark(this, stub_id); address start = __ pc(); Register buf = c_rarg0; Register state = c_rarg1; Register ofs = c_rarg2; Register limit = c_rarg3; const XMMRegister msg = xmm0; const XMMRegister state0 = xmm1; const XMMRegister state1 = xmm2; const XMMRegister msgtmp0 = xmm3; const XMMRegister msgtmp1 = xmm4; const XMMRegister msgtmp2 = xmm5; const XMMRegister msgtmp3 = xmm6; const XMMRegister msgtmp4 = xmm7; const XMMRegister shuf_mask = xmm8; __ enter(); __ subptr(rsp, 4 * wordSize); if (VM_Version::supports_sha()) { __ fast_sha256(msg, state0, state1, msgtmp0, msgtmp1, msgtmp2, msgtmp3, msgtmp4, buf, state, ofs, limit, rsp, multi_block, shuf_mask); } else if (VM_Version::supports_avx2()) { __ sha256_AVX2(msg, state0, state1, msgtmp0, msgtmp1, msgtmp2, msgtmp3, msgtmp4, buf, state, ofs, limit, rsp, multi_block, shuf_mask); } __ addptr(rsp, 4 * wordSize); __ vzeroupper(); __ leave(); __ ret(0); return start; } address StubGenerator::generate_sha512_implCompress(StubGenStubId stub_id) { bool multi_block; switch (stub_id) { case sha512_implCompress_id: multi_block = false; break; case sha512_implCompressMB_id: multi_block = true; break; default: ShouldNotReachHere(); } assert(VM_Version::supports_avx2(), ""); assert(VM_Version::supports_bmi2() || VM_Version::supports_sha512(), ""); __ align(CodeEntryAlignment); StubCodeMark mark(this, stub_id); address start = __ pc(); Register buf = c_rarg0; Register state = c_rarg1; Register ofs = c_rarg2; Register limit = c_rarg3; __ enter(); if (VM_Version::supports_sha512()) { __ sha512_update_ni_x1(state, buf, ofs, limit, multi_block); } else { const XMMRegister msg = xmm0; const XMMRegister state0 = xmm1; const XMMRegister state1 = xmm2; const XMMRegister msgtmp0 = xmm3; const XMMRegister msgtmp1 = xmm4; const XMMRegister msgtmp2 = xmm5; const XMMRegister msgtmp3 = xmm6; const XMMRegister msgtmp4 = xmm7; const XMMRegister shuf_mask = xmm8; __ sha512_AVX2(msg, state0, state1, msgtmp0, msgtmp1, msgtmp2, msgtmp3, msgtmp4, buf, state, ofs, limit, rsp, multi_block, shuf_mask); } __ vzeroupper(); __ leave(); __ ret(0); return start; } address StubGenerator::base64_shuffle_addr() { __ align64(); StubGenStubId stub_id = StubGenStubId::shuffle_base64_id; StubCodeMark mark(this, stub_id); address start = __ pc(); assert(((unsigned long long)start & 0x3f) == 0, "Alignment problem (0x%08llx)", (unsigned long long)start); __ emit_data64(0x0405030401020001, relocInfo::none); __ emit_data64(0x0a0b090a07080607, relocInfo::none); __ emit_data64(0x10110f100d0e0c0d, relocInfo::none); __ emit_data64(0x1617151613141213, relocInfo::none); __ emit_data64(0x1c1d1b1c191a1819, relocInfo::none); __ emit_data64(0x222321221f201e1f, relocInfo::none); __ emit_data64(0x2829272825262425, relocInfo::none); __ emit_data64(0x2e2f2d2e2b2c2a2b, relocInfo::none); return start; } address StubGenerator::base64_avx2_shuffle_addr() { __ align32(); StubGenStubId stub_id = StubGenStubId::avx2_shuffle_base64_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(0x0809070805060405, relocInfo::none); __ emit_data64(0x0e0f0d0e0b0c0a0b, relocInfo::none); __ emit_data64(0x0405030401020001, relocInfo::none); __ emit_data64(0x0a0b090a07080607, relocInfo::none); return start; } address StubGenerator::base64_avx2_input_mask_addr() { __ align32(); StubGenStubId stub_id = StubGenStubId::avx2_input_mask_base64_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(0x8000000000000000, relocInfo::none); __ emit_data64(0x8000000080000000, relocInfo::none); __ emit_data64(0x8000000080000000, relocInfo::none); __ emit_data64(0x8000000080000000, relocInfo::none); return start; } address StubGenerator::base64_avx2_lut_addr() { __ align32(); StubGenStubId stub_id = StubGenStubId::avx2_lut_base64_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(0xfcfcfcfcfcfc4741, relocInfo::none); __ emit_data64(0x0000f0edfcfcfcfc, relocInfo::none); __ emit_data64(0xfcfcfcfcfcfc4741, relocInfo::none); __ emit_data64(0x0000f0edfcfcfcfc, relocInfo::none); // URL LUT __ emit_data64(0xfcfcfcfcfcfc4741, relocInfo::none); __ emit_data64(0x000020effcfcfcfc, relocInfo::none); __ emit_data64(0xfcfcfcfcfcfc4741, relocInfo::none); __ emit_data64(0x000020effcfcfcfc, relocInfo::none); return start; } address StubGenerator::base64_encoding_table_addr() { __ align64(); StubGenStubId stub_id = StubGenStubId::encoding_table_base64_id; StubCodeMark mark(this, stub_id); address start = __ pc(); assert(((unsigned long long)start & 0x3f) == 0, "Alignment problem (0x%08llx)", (unsigned long long)start); __ emit_data64(0x4847464544434241, relocInfo::none); __ emit_data64(0x504f4e4d4c4b4a49, relocInfo::none); __ emit_data64(0x5857565554535251, relocInfo::none); __ emit_data64(0x6665646362615a59, relocInfo::none); __ emit_data64(0x6e6d6c6b6a696867, relocInfo::none); __ emit_data64(0x767574737271706f, relocInfo::none); __ emit_data64(0x333231307a797877, relocInfo::none); __ emit_data64(0x2f2b393837363534, relocInfo::none); // URL table __ emit_data64(0x4847464544434241, relocInfo::none); __ emit_data64(0x504f4e4d4c4b4a49, relocInfo::none); __ emit_data64(0x5857565554535251, relocInfo::none); __ emit_data64(0x6665646362615a59, relocInfo::none); __ emit_data64(0x6e6d6c6b6a696867, relocInfo::none); __ emit_data64(0x767574737271706f, relocInfo::none); __ emit_data64(0x333231307a797877, relocInfo::none); __ emit_data64(0x5f2d393837363534, relocInfo::none); return start; } // Code for generating Base64 encoding. // Intrinsic function prototype in Base64.java: // private void encodeBlock(byte[] src, int sp, int sl, byte[] dst, int dp, // boolean isURL) { address StubGenerator::generate_base64_encodeBlock() { __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::base64_encodeBlock_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ enter(); // Save callee-saved registers before using them __ push(r12); __ push(r13); __ push(r14); __ push(r15); // arguments const Register source = c_rarg0; // Source Array const Register start_offset = c_rarg1; // start offset const Register end_offset = c_rarg2; // end offset const Register dest = c_rarg3; // destination array #ifndef _WIN64 const Register dp = c_rarg4; // Position for writing to dest array const Register isURL = c_rarg5; // Base64 or URL character set #else const Address dp_mem(rbp, 6 * wordSize); // length is on stack on Win64 const Address isURL_mem(rbp, 7 * wordSize); const Register isURL = r10; // pick the volatile windows register const Register dp = r12; __ movl(dp, dp_mem); __ movl(isURL, isURL_mem); #endif const Register length = r14; const Register encode_table = r13; Label L_process3, L_exit, L_processdata, L_vbmiLoop, L_not512, L_32byteLoop; // calculate length from offsets __ movl(length, end_offset); __ subl(length, start_offset); __ jcc(Assembler::lessEqual, L_exit); // Code for 512-bit VBMI encoding. Encodes 48 input bytes into 64 // output bytes. We read 64 input bytes and ignore the last 16, so be // sure not to read past the end of the input buffer. if (VM_Version::supports_avx512_vbmi()) { __ cmpl(length, 64); // Do not overrun input buffer. __ jcc(Assembler::below, L_not512); __ shll(isURL, 6); // index into decode table based on isURL __ lea(encode_table, ExternalAddress(StubRoutines::x86::base64_encoding_table_addr())); __ addptr(encode_table, isURL); __ shrl(isURL, 6); // restore isURL __ mov64(rax, 0x3036242a1016040aull); // Shifts __ evmovdquq(xmm3, ExternalAddress(StubRoutines::x86::base64_shuffle_addr()), Assembler::AVX_512bit, r15); __ evmovdquq(xmm2, Address(encode_table, 0), Assembler::AVX_512bit); __ evpbroadcastq(xmm1, rax, Assembler::AVX_512bit); __ align32(); __ BIND(L_vbmiLoop); __ vpermb(xmm0, xmm3, Address(source, start_offset), Assembler::AVX_512bit); __ subl(length, 48); // Put the input bytes into the proper lanes for writing, then // encode them. __ evpmultishiftqb(xmm0, xmm1, xmm0, Assembler::AVX_512bit); __ vpermb(xmm0, xmm0, xmm2, Assembler::AVX_512bit); // Write to destination __ evmovdquq(Address(dest, dp), xmm0, Assembler::AVX_512bit); __ addptr(dest, 64); __ addptr(source, 48); __ cmpl(length, 64); __ jcc(Assembler::aboveEqual, L_vbmiLoop); __ vzeroupper(); } __ BIND(L_not512); if (VM_Version::supports_avx2()) { /* ** This AVX2 encoder is based off the paper at: ** https://dl.acm.org/doi/10.1145/3132709 ** ** We use AVX2 SIMD instructions to encode 24 bytes into 32 ** output bytes. ** */ // Lengths under 32 bytes are done with scalar routine __ cmpl(length, 31); __ jcc(Assembler::belowEqual, L_process3); // Set up supporting constant table data __ vmovdqu(xmm9, ExternalAddress(StubRoutines::x86::base64_avx2_shuffle_addr()), rax); // 6-bit mask for 2nd and 4th (and multiples) 6-bit values __ movl(rax, 0x0fc0fc00); __ movdl(xmm8, rax); __ vmovdqu(xmm1, ExternalAddress(StubRoutines::x86::base64_avx2_input_mask_addr()), rax); __ vpbroadcastd(xmm8, xmm8, Assembler::AVX_256bit); // Multiplication constant for "shifting" right by 6 and 10 // bits __ movl(rax, 0x04000040); __ subl(length, 24); __ movdl(xmm7, rax); __ vpbroadcastd(xmm7, xmm7, Assembler::AVX_256bit); // For the first load, we mask off reading of the first 4 // bytes into the register. This is so we can get 4 3-byte // chunks into each lane of the register, avoiding having to // handle end conditions. We then shuffle these bytes into a // specific order so that manipulation is easier. // // The initial read loads the XMM register like this: // // Lower 128-bit lane: // +----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ // | XX | XX | XX | XX | A0 | A1 | A2 | B0 | B1 | B2 | C0 | C1 // | C2 | D0 | D1 | D2 | // +----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ // // Upper 128-bit lane: // +----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ // | E0 | E1 | E2 | F0 | F1 | F2 | G0 | G1 | G2 | H0 | H1 | H2 // | XX | XX | XX | XX | // +----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ // // Where A0 is the first input byte, B0 is the fourth, etc. // The alphabetical significance denotes the 3 bytes to be // consumed and encoded into 4 bytes. // // We then shuffle the register so each 32-bit word contains // the sequence: // A1 A0 A2 A1, B1, B0, B2, B1, etc. // Each of these byte sequences are then manipulated into 4 // 6-bit values ready for encoding. // // If we focus on one set of 3-byte chunks, changing the // nomenclature such that A0 => a, A1 => b, and A2 => c, we // shuffle such that each 24-bit chunk contains: // // b7 b6 b5 b4 b3 b2 b1 b0 | a7 a6 a5 a4 a3 a2 a1 a0 | c7 c6 // c5 c4 c3 c2 c1 c0 | b7 b6 b5 b4 b3 b2 b1 b0 // Explain this step. // b3 b2 b1 b0 c5 c4 c3 c2 | c1 c0 d5 d4 d3 d2 d1 d0 | a5 a4 // a3 a2 a1 a0 b5 b4 | b3 b2 b1 b0 c5 c4 c3 c2 // // W first and off all but bits 4-9 and 16-21 (c5..c0 and // a5..a0) and shift them using a vector multiplication // operation (vpmulhuw) which effectively shifts c right by 6 // bits and a right by 10 bits. We similarly mask bits 10-15 // (d5..d0) and 22-27 (b5..b0) and shift them left by 8 and 4 // bits respectively. This is done using vpmullw. We end up // with 4 6-bit values, thus splitting the 3 input bytes, // ready for encoding: // 0 0 d5..d0 0 0 c5..c0 0 0 b5..b0 0 0 a5..a0 // // For translation, we recognize that there are 5 distinct // ranges of legal Base64 characters as below: // // +-------------+-------------+------------+ // | 6-bit value | ASCII range | offset | // +-------------+-------------+------------+ // | 0..25 | A..Z | 65 | // | 26..51 | a..z | 71 | // | 52..61 | 0..9 | -4 | // | 62 | + or - | -19 or -17 | // | 63 | / or _ | -16 or 32 | // +-------------+-------------+------------+ // // We note that vpshufb does a parallel lookup in a // destination register using the lower 4 bits of bytes from a // source register. If we use a saturated subtraction and // subtract 51 from each 6-bit value, bytes from [0,51] // saturate to 0, and [52,63] map to a range of [1,12]. We // distinguish the [0,25] and [26,51] ranges by assigning a // value of 13 for all 6-bit values less than 26. We end up // with: // // +-------------+-------------+------------+ // | 6-bit value | Reduced | offset | // +-------------+-------------+------------+ // | 0..25 | 13 | 65 | // | 26..51 | 0 | 71 | // | 52..61 | 0..9 | -4 | // | 62 | 11 | -19 or -17 | // | 63 | 12 | -16 or 32 | // +-------------+-------------+------------+ // // We then use a final vpshufb to add the appropriate offset, // translating the bytes. // // Load input bytes - only 28 bytes. Mask the first load to // not load into the full register. __ vpmaskmovd(xmm1, xmm1, Address(source, start_offset, Address::times_1, -4), Assembler::AVX_256bit); // Move 3-byte chunks of input (12 bytes) into 16 bytes, // ordering by: // 1, 0, 2, 1; 4, 3, 5, 4; etc. This groups 6-bit chunks // for easy masking __ vpshufb(xmm1, xmm1, xmm9, Assembler::AVX_256bit); __ addl(start_offset, 24); // Load masking register for first and third (and multiples) // 6-bit values. __ movl(rax, 0x003f03f0); __ movdl(xmm6, rax); __ vpbroadcastd(xmm6, xmm6, Assembler::AVX_256bit); // Multiplication constant for "shifting" left by 4 and 8 bits __ movl(rax, 0x01000010); __ movdl(xmm5, rax); __ vpbroadcastd(xmm5, xmm5, Assembler::AVX_256bit); // Isolate 6-bit chunks of interest __ vpand(xmm0, xmm8, xmm1, Assembler::AVX_256bit); // Load constants for encoding __ movl(rax, 0x19191919); __ movdl(xmm3, rax); __ vpbroadcastd(xmm3, xmm3, Assembler::AVX_256bit); __ movl(rax, 0x33333333); __ movdl(xmm4, rax); __ vpbroadcastd(xmm4, xmm4, Assembler::AVX_256bit); // Shift output bytes 0 and 2 into proper lanes __ vpmulhuw(xmm2, xmm0, xmm7, Assembler::AVX_256bit); // Mask and shift output bytes 1 and 3 into proper lanes and // combine __ vpand(xmm0, xmm6, xmm1, Assembler::AVX_256bit); __ vpmullw(xmm0, xmm5, xmm0, Assembler::AVX_256bit); __ vpor(xmm0, xmm0, xmm2, Assembler::AVX_256bit); // Find out which are 0..25. This indicates which input // values fall in the range of 'A'-'Z', which require an // additional offset (see comments above) __ vpcmpgtb(xmm2, xmm0, xmm3, Assembler::AVX_256bit); __ vpsubusb(xmm1, xmm0, xmm4, Assembler::AVX_256bit); __ vpsubb(xmm1, xmm1, xmm2, Assembler::AVX_256bit); // Load the proper lookup table __ lea(r11, ExternalAddress(StubRoutines::x86::base64_avx2_lut_addr())); __ movl(r15, isURL); __ shll(r15, 5); __ vmovdqu(xmm2, Address(r11, r15)); // Shuffle the offsets based on the range calculation done // above. This allows us to add the correct offset to the // 6-bit value corresponding to the range documented above. __ vpshufb(xmm1, xmm2, xmm1, Assembler::AVX_256bit); __ vpaddb(xmm0, xmm1, xmm0, Assembler::AVX_256bit); // Store the encoded bytes __ vmovdqu(Address(dest, dp), xmm0); __ addl(dp, 32); __ cmpl(length, 31); __ jcc(Assembler::belowEqual, L_process3); __ align32(); __ BIND(L_32byteLoop); // Get next 32 bytes __ vmovdqu(xmm1, Address(source, start_offset, Address::times_1, -4)); __ subl(length, 24); __ addl(start_offset, 24); // This logic is identical to the above, with only constant // register loads removed. Shuffle the input, mask off 6-bit // chunks, shift them into place, then add the offset to // encode. __ vpshufb(xmm1, xmm1, xmm9, Assembler::AVX_256bit); __ vpand(xmm0, xmm8, xmm1, Assembler::AVX_256bit); __ vpmulhuw(xmm10, xmm0, xmm7, Assembler::AVX_256bit); __ vpand(xmm0, xmm6, xmm1, Assembler::AVX_256bit); __ vpmullw(xmm0, xmm5, xmm0, Assembler::AVX_256bit); __ vpor(xmm0, xmm0, xmm10, Assembler::AVX_256bit); __ vpcmpgtb(xmm10, xmm0, xmm3, Assembler::AVX_256bit); __ vpsubusb(xmm1, xmm0, xmm4, Assembler::AVX_256bit); __ vpsubb(xmm1, xmm1, xmm10, Assembler::AVX_256bit); __ vpshufb(xmm1, xmm2, xmm1, Assembler::AVX_256bit); __ vpaddb(xmm0, xmm1, xmm0, Assembler::AVX_256bit); // Store the encoded bytes __ vmovdqu(Address(dest, dp), xmm0); __ addl(dp, 32); __ cmpl(length, 31); __ jcc(Assembler::above, L_32byteLoop); __ BIND(L_process3); __ vzeroupper(); } else { __ BIND(L_process3); } __ cmpl(length, 3); __ jcc(Assembler::below, L_exit); // Load the encoding table based on isURL __ lea(r11, ExternalAddress(StubRoutines::x86::base64_encoding_table_addr())); __ movl(r15, isURL); __ shll(r15, 6); __ addptr(r11, r15); __ BIND(L_processdata); // Load 3 bytes __ load_unsigned_byte(r15, Address(source, start_offset)); __ load_unsigned_byte(r10, Address(source, start_offset, Address::times_1, 1)); __ load_unsigned_byte(r13, Address(source, start_offset, Address::times_1, 2)); // Build a 32-bit word with bytes 1, 2, 0, 1 __ movl(rax, r10); __ shll(r10, 24); __ orl(rax, r10); __ subl(length, 3); __ shll(r15, 8); __ shll(r13, 16); __ orl(rax, r15); __ addl(start_offset, 3); __ orl(rax, r13); // At this point, rax contains | byte1 | byte2 | byte0 | byte1 // r13 has byte2 << 16 - need low-order 6 bits to translate. // This translated byte is the fourth output byte. __ shrl(r13, 16); __ andl(r13, 0x3f); // The high-order 6 bits of r15 (byte0) is translated. // The translated byte is the first output byte. __ shrl(r15, 10); __ load_unsigned_byte(r13, Address(r11, r13)); __ load_unsigned_byte(r15, Address(r11, r15)); __ movb(Address(dest, dp, Address::times_1, 3), r13); // Extract high-order 4 bits of byte1 and low-order 2 bits of byte0. // This translated byte is the second output byte. __ shrl(rax, 4); __ movl(r10, rax); __ andl(rax, 0x3f); __ movb(Address(dest, dp, Address::times_1, 0), r15); __ load_unsigned_byte(rax, Address(r11, rax)); // Extract low-order 2 bits of byte1 and high-order 4 bits of byte2. // This translated byte is the third output byte. __ shrl(r10, 18); __ andl(r10, 0x3f); __ load_unsigned_byte(r10, Address(r11, r10)); __ movb(Address(dest, dp, Address::times_1, 1), rax); __ movb(Address(dest, dp, Address::times_1, 2), r10); __ addl(dp, 4); __ cmpl(length, 3); __ jcc(Assembler::aboveEqual, L_processdata); __ BIND(L_exit); __ pop(r15); __ pop(r14); __ pop(r13); __ pop(r12); __ leave(); __ ret(0); return start; } // base64 AVX512vbmi tables address StubGenerator::base64_vbmi_lookup_lo_addr() { __ align64(); StubGenStubId stub_id = StubGenStubId::lookup_lo_base64_id; StubCodeMark mark(this, stub_id); address start = __ pc(); assert(((unsigned long long)start & 0x3f) == 0, "Alignment problem (0x%08llx)", (unsigned long long)start); __ emit_data64(0x8080808080808080, relocInfo::none); __ emit_data64(0x8080808080808080, relocInfo::none); __ emit_data64(0x8080808080808080, relocInfo::none); __ emit_data64(0x8080808080808080, relocInfo::none); __ emit_data64(0x8080808080808080, relocInfo::none); __ emit_data64(0x3f8080803e808080, relocInfo::none); __ emit_data64(0x3b3a393837363534, relocInfo::none); __ emit_data64(0x8080808080803d3c, relocInfo::none); return start; } address StubGenerator::base64_vbmi_lookup_hi_addr() { __ align64(); StubGenStubId stub_id = StubGenStubId::lookup_hi_base64_id; StubCodeMark mark(this, stub_id); address start = __ pc(); assert(((unsigned long long)start & 0x3f) == 0, "Alignment problem (0x%08llx)", (unsigned long long)start); __ emit_data64(0x0605040302010080, relocInfo::none); __ emit_data64(0x0e0d0c0b0a090807, relocInfo::none); __ emit_data64(0x161514131211100f, relocInfo::none); __ emit_data64(0x8080808080191817, relocInfo::none); __ emit_data64(0x201f1e1d1c1b1a80, relocInfo::none); __ emit_data64(0x2827262524232221, relocInfo::none); __ emit_data64(0x302f2e2d2c2b2a29, relocInfo::none); __ emit_data64(0x8080808080333231, relocInfo::none); return start; } address StubGenerator::base64_vbmi_lookup_lo_url_addr() { __ align64(); StubGenStubId stub_id = StubGenStubId::lookup_lo_base64url_id; StubCodeMark mark(this, stub_id); address start = __ pc(); assert(((unsigned long long)start & 0x3f) == 0, "Alignment problem (0x%08llx)", (unsigned long long)start); __ emit_data64(0x8080808080808080, relocInfo::none); __ emit_data64(0x8080808080808080, relocInfo::none); __ emit_data64(0x8080808080808080, relocInfo::none); __ emit_data64(0x8080808080808080, relocInfo::none); __ emit_data64(0x8080808080808080, relocInfo::none); __ emit_data64(0x80803e8080808080, relocInfo::none); __ emit_data64(0x3b3a393837363534, relocInfo::none); __ emit_data64(0x8080808080803d3c, relocInfo::none); return start; } address StubGenerator::base64_vbmi_lookup_hi_url_addr() { __ align64(); StubGenStubId stub_id = StubGenStubId::lookup_hi_base64url_id; StubCodeMark mark(this, stub_id); address start = __ pc(); assert(((unsigned long long)start & 0x3f) == 0, "Alignment problem (0x%08llx)", (unsigned long long)start); __ emit_data64(0x0605040302010080, relocInfo::none); __ emit_data64(0x0e0d0c0b0a090807, relocInfo::none); __ emit_data64(0x161514131211100f, relocInfo::none); __ emit_data64(0x3f80808080191817, relocInfo::none); __ emit_data64(0x201f1e1d1c1b1a80, relocInfo::none); __ emit_data64(0x2827262524232221, relocInfo::none); __ emit_data64(0x302f2e2d2c2b2a29, relocInfo::none); __ emit_data64(0x8080808080333231, relocInfo::none); return start; } address StubGenerator::base64_vbmi_pack_vec_addr() { __ align64(); StubGenStubId stub_id = StubGenStubId::pack_vec_base64_id; StubCodeMark mark(this, stub_id); address start = __ pc(); assert(((unsigned long long)start & 0x3f) == 0, "Alignment problem (0x%08llx)", (unsigned long long)start); __ emit_data64(0x090a040506000102, relocInfo::none); __ emit_data64(0x161011120c0d0e08, relocInfo::none); __ emit_data64(0x1c1d1e18191a1415, relocInfo::none); __ emit_data64(0x292a242526202122, relocInfo::none); __ emit_data64(0x363031322c2d2e28, relocInfo::none); __ emit_data64(0x3c3d3e38393a3435, relocInfo::none); __ emit_data64(0x0000000000000000, relocInfo::none); __ emit_data64(0x0000000000000000, relocInfo::none); return start; } address StubGenerator::base64_vbmi_join_0_1_addr() { __ align64(); StubGenStubId stub_id = StubGenStubId::join_0_1_base64_id; StubCodeMark mark(this, stub_id); address start = __ pc(); assert(((unsigned long long)start & 0x3f) == 0, "Alignment problem (0x%08llx)", (unsigned long long)start); __ emit_data64(0x090a040506000102, relocInfo::none); __ emit_data64(0x161011120c0d0e08, relocInfo::none); __ emit_data64(0x1c1d1e18191a1415, relocInfo::none); __ emit_data64(0x292a242526202122, relocInfo::none); __ emit_data64(0x363031322c2d2e28, relocInfo::none); __ emit_data64(0x3c3d3e38393a3435, relocInfo::none); __ emit_data64(0x494a444546404142, relocInfo::none); __ emit_data64(0x565051524c4d4e48, relocInfo::none); return start; } address StubGenerator::base64_vbmi_join_1_2_addr() { __ align64(); StubGenStubId stub_id = StubGenStubId::join_1_2_base64_id; StubCodeMark mark(this, stub_id); address start = __ pc(); assert(((unsigned long long)start & 0x3f) == 0, "Alignment problem (0x%08llx)", (unsigned long long)start); __ emit_data64(0x1c1d1e18191a1415, relocInfo::none); __ emit_data64(0x292a242526202122, relocInfo::none); __ emit_data64(0x363031322c2d2e28, relocInfo::none); __ emit_data64(0x3c3d3e38393a3435, relocInfo::none); __ emit_data64(0x494a444546404142, relocInfo::none); __ emit_data64(0x565051524c4d4e48, relocInfo::none); __ emit_data64(0x5c5d5e58595a5455, relocInfo::none); __ emit_data64(0x696a646566606162, relocInfo::none); return start; } address StubGenerator::base64_vbmi_join_2_3_addr() { __ align64(); StubGenStubId stub_id = StubGenStubId::join_2_3_base64_id; StubCodeMark mark(this, stub_id); address start = __ pc(); assert(((unsigned long long)start & 0x3f) == 0, "Alignment problem (0x%08llx)", (unsigned long long)start); __ emit_data64(0x363031322c2d2e28, relocInfo::none); __ emit_data64(0x3c3d3e38393a3435, relocInfo::none); __ emit_data64(0x494a444546404142, relocInfo::none); __ emit_data64(0x565051524c4d4e48, relocInfo::none); __ emit_data64(0x5c5d5e58595a5455, relocInfo::none); __ emit_data64(0x696a646566606162, relocInfo::none); __ emit_data64(0x767071726c6d6e68, relocInfo::none); __ emit_data64(0x7c7d7e78797a7475, relocInfo::none); return start; } address StubGenerator::base64_AVX2_decode_tables_addr() { __ align64(); StubGenStubId stub_id = StubGenStubId::avx2_decode_tables_base64_id; StubCodeMark mark(this, stub_id); address start = __ pc(); assert(((unsigned long long)start & 0x3f) == 0, "Alignment problem (0x%08llx)", (unsigned long long)start); __ emit_data(0x2f2f2f2f, relocInfo::none, 0); __ emit_data(0x5f5f5f5f, relocInfo::none, 0); // for URL __ emit_data(0xffffffff, relocInfo::none, 0); __ emit_data(0xfcfcfcfc, relocInfo::none, 0); // for URL // Permute table __ emit_data64(0x0000000100000000, relocInfo::none); __ emit_data64(0x0000000400000002, relocInfo::none); __ emit_data64(0x0000000600000005, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); // Shuffle table __ emit_data64(0x090a040506000102, relocInfo::none); __ emit_data64(0xffffffff0c0d0e08, relocInfo::none); __ emit_data64(0x090a040506000102, relocInfo::none); __ emit_data64(0xffffffff0c0d0e08, relocInfo::none); // merge table __ emit_data(0x01400140, relocInfo::none, 0); // merge multiplier __ emit_data(0x00011000, relocInfo::none, 0); return start; } address StubGenerator::base64_AVX2_decode_LUT_tables_addr() { __ align64(); StubGenStubId stub_id = StubGenStubId::avx2_decode_lut_tables_base64_id; StubCodeMark mark(this, stub_id); address start = __ pc(); assert(((unsigned long long)start & 0x3f) == 0, "Alignment problem (0x%08llx)", (unsigned long long)start); // lut_lo __ emit_data64(0x1111111111111115, relocInfo::none); __ emit_data64(0x1a1b1b1b1a131111, relocInfo::none); __ emit_data64(0x1111111111111115, relocInfo::none); __ emit_data64(0x1a1b1b1b1a131111, relocInfo::none); // lut_roll __ emit_data64(0xb9b9bfbf04131000, relocInfo::none); __ emit_data64(0x0000000000000000, relocInfo::none); __ emit_data64(0xb9b9bfbf04131000, relocInfo::none); __ emit_data64(0x0000000000000000, relocInfo::none); // lut_lo URL __ emit_data64(0x1111111111111115, relocInfo::none); __ emit_data64(0x1b1b1a1b1b131111, relocInfo::none); __ emit_data64(0x1111111111111115, relocInfo::none); __ emit_data64(0x1b1b1a1b1b131111, relocInfo::none); // lut_roll URL __ emit_data64(0xb9b9bfbf0411e000, relocInfo::none); __ emit_data64(0x0000000000000000, relocInfo::none); __ emit_data64(0xb9b9bfbf0411e000, relocInfo::none); __ emit_data64(0x0000000000000000, relocInfo::none); // lut_hi __ emit_data64(0x0804080402011010, relocInfo::none); __ emit_data64(0x1010101010101010, relocInfo::none); __ emit_data64(0x0804080402011010, relocInfo::none); __ emit_data64(0x1010101010101010, relocInfo::none); return start; } address StubGenerator::base64_decoding_table_addr() { StubGenStubId stub_id = StubGenStubId::decoding_table_base64_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0x3fffffff3effffff, relocInfo::none); __ emit_data64(0x3b3a393837363534, relocInfo::none); __ emit_data64(0xffffffffffff3d3c, relocInfo::none); __ emit_data64(0x06050403020100ff, relocInfo::none); __ emit_data64(0x0e0d0c0b0a090807, relocInfo::none); __ emit_data64(0x161514131211100f, relocInfo::none); __ emit_data64(0xffffffffff191817, relocInfo::none); __ emit_data64(0x201f1e1d1c1b1aff, relocInfo::none); __ emit_data64(0x2827262524232221, relocInfo::none); __ emit_data64(0x302f2e2d2c2b2a29, relocInfo::none); __ emit_data64(0xffffffffff333231, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); // URL table __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffff3effffffffff, relocInfo::none); __ emit_data64(0x3b3a393837363534, relocInfo::none); __ emit_data64(0xffffffffffff3d3c, relocInfo::none); __ emit_data64(0x06050403020100ff, relocInfo::none); __ emit_data64(0x0e0d0c0b0a090807, relocInfo::none); __ emit_data64(0x161514131211100f, relocInfo::none); __ emit_data64(0x3fffffffff191817, relocInfo::none); __ emit_data64(0x201f1e1d1c1b1aff, relocInfo::none); __ emit_data64(0x2827262524232221, relocInfo::none); __ emit_data64(0x302f2e2d2c2b2a29, relocInfo::none); __ emit_data64(0xffffffffff333231, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); __ emit_data64(0xffffffffffffffff, relocInfo::none); return start; } // Code for generating Base64 decoding. // // Based on the article (and associated code) from https://arxiv.org/abs/1910.05109. // // Intrinsic function prototype in Base64.java: // private void decodeBlock(byte[] src, int sp, int sl, byte[] dst, int dp, boolean isURL, isMIME) { address StubGenerator::generate_base64_decodeBlock() { __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::base64_decodeBlock_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ enter(); // Save callee-saved registers before using them __ push(r12); __ push(r13); __ push(r14); __ push(r15); __ push(rbx); // arguments const Register source = c_rarg0; // Source Array const Register start_offset = c_rarg1; // start offset const Register end_offset = c_rarg2; // end offset const Register dest = c_rarg3; // destination array const Register isMIME = rbx; #ifndef _WIN64 const Register dp = c_rarg4; // Position for writing to dest array const Register isURL = c_rarg5;// Base64 or URL character set __ movl(isMIME, Address(rbp, 2 * wordSize)); #else const Address dp_mem(rbp, 6 * wordSize); // length is on stack on Win64 const Address isURL_mem(rbp, 7 * wordSize); const Register isURL = r10; // pick the volatile windows register const Register dp = r12; __ movl(dp, dp_mem); __ movl(isURL, isURL_mem); __ movl(isMIME, Address(rbp, 8 * wordSize)); #endif const XMMRegister lookup_lo = xmm5; const XMMRegister lookup_hi = xmm6; const XMMRegister errorvec = xmm7; const XMMRegister pack16_op = xmm9; const XMMRegister pack32_op = xmm8; const XMMRegister input0 = xmm3; const XMMRegister input1 = xmm20; const XMMRegister input2 = xmm21; const XMMRegister input3 = xmm19; const XMMRegister join01 = xmm12; const XMMRegister join12 = xmm11; const XMMRegister join23 = xmm10; const XMMRegister translated0 = xmm2; const XMMRegister translated1 = xmm1; const XMMRegister translated2 = xmm0; const XMMRegister translated3 = xmm4; const XMMRegister merged0 = xmm2; const XMMRegister merged1 = xmm1; const XMMRegister merged2 = xmm0; const XMMRegister merged3 = xmm4; const XMMRegister merge_ab_bc0 = xmm2; const XMMRegister merge_ab_bc1 = xmm1; const XMMRegister merge_ab_bc2 = xmm0; const XMMRegister merge_ab_bc3 = xmm4; const XMMRegister pack24bits = xmm4; const Register length = r14; const Register output_size = r13; const Register output_mask = r15; const KRegister input_mask = k1; const XMMRegister input_initial_valid_b64 = xmm0; const XMMRegister tmp = xmm10; const XMMRegister mask = xmm0; const XMMRegister invalid_b64 = xmm1; Label L_process256, L_process64, L_process64Loop, L_exit, L_processdata, L_loadURL; Label L_continue, L_finalBit, L_padding, L_donePadding, L_bruteForce; Label L_forceLoop, L_bottomLoop, L_checkMIME, L_exit_no_vzero, L_lastChunk; // calculate length from offsets __ movl(length, end_offset); __ subl(length, start_offset); __ push(dest); // Save for return value calc // If AVX512 VBMI not supported, just compile non-AVX code if(VM_Version::supports_avx512_vbmi() && VM_Version::supports_avx512bw()) { __ cmpl(length, 31); // 32-bytes is break-even for AVX-512 __ jcc(Assembler::lessEqual, L_lastChunk); __ cmpl(isMIME, 0); __ jcc(Assembler::notEqual, L_lastChunk); // Load lookup tables based on isURL __ cmpl(isURL, 0); __ jcc(Assembler::notZero, L_loadURL); __ evmovdquq(lookup_lo, ExternalAddress(StubRoutines::x86::base64_vbmi_lookup_lo_addr()), Assembler::AVX_512bit, r13); __ evmovdquq(lookup_hi, ExternalAddress(StubRoutines::x86::base64_vbmi_lookup_hi_addr()), Assembler::AVX_512bit, r13); __ BIND(L_continue); __ movl(r15, 0x01400140); __ evpbroadcastd(pack16_op, r15, Assembler::AVX_512bit); __ movl(r15, 0x00011000); __ evpbroadcastd(pack32_op, r15, Assembler::AVX_512bit); __ cmpl(length, 0xff); __ jcc(Assembler::lessEqual, L_process64); // load masks required for decoding data __ BIND(L_processdata); __ evmovdquq(join01, ExternalAddress(StubRoutines::x86::base64_vbmi_join_0_1_addr()), Assembler::AVX_512bit,r13); __ evmovdquq(join12, ExternalAddress(StubRoutines::x86::base64_vbmi_join_1_2_addr()), Assembler::AVX_512bit, r13); __ evmovdquq(join23, ExternalAddress(StubRoutines::x86::base64_vbmi_join_2_3_addr()), Assembler::AVX_512bit, r13); __ align32(); __ BIND(L_process256); // Grab input data __ evmovdquq(input0, Address(source, start_offset, Address::times_1, 0x00), Assembler::AVX_512bit); __ evmovdquq(input1, Address(source, start_offset, Address::times_1, 0x40), Assembler::AVX_512bit); __ evmovdquq(input2, Address(source, start_offset, Address::times_1, 0x80), Assembler::AVX_512bit); __ evmovdquq(input3, Address(source, start_offset, Address::times_1, 0xc0), Assembler::AVX_512bit); // Copy the low part of the lookup table into the destination of the permutation __ evmovdquq(translated0, lookup_lo, Assembler::AVX_512bit); __ evmovdquq(translated1, lookup_lo, Assembler::AVX_512bit); __ evmovdquq(translated2, lookup_lo, Assembler::AVX_512bit); __ evmovdquq(translated3, lookup_lo, Assembler::AVX_512bit); // Translate the base64 input into "decoded" bytes __ evpermt2b(translated0, input0, lookup_hi, Assembler::AVX_512bit); __ evpermt2b(translated1, input1, lookup_hi, Assembler::AVX_512bit); __ evpermt2b(translated2, input2, lookup_hi, Assembler::AVX_512bit); __ evpermt2b(translated3, input3, lookup_hi, Assembler::AVX_512bit); // OR all of the translations together to check for errors (high-order bit of byte set) __ vpternlogd(input0, 0xfe, input1, input2, Assembler::AVX_512bit); __ vpternlogd(input3, 0xfe, translated0, translated1, Assembler::AVX_512bit); __ vpternlogd(input0, 0xfe, translated2, translated3, Assembler::AVX_512bit); __ vpor(errorvec, input3, input0, Assembler::AVX_512bit); // Check if there was an error - if so, try 64-byte chunks __ evpmovb2m(k3, errorvec, Assembler::AVX_512bit); __ kortestql(k3, k3); __ jcc(Assembler::notZero, L_process64); // The merging and shuffling happens here // We multiply each byte pair [00dddddd | 00cccccc | 00bbbbbb | 00aaaaaa] // Multiply [00cccccc] by 2^6 added to [00dddddd] to get [0000cccc | ccdddddd] // The pack16_op is a vector of 0x01400140, so multiply D by 1 and C by 0x40 __ vpmaddubsw(merge_ab_bc0, translated0, pack16_op, Assembler::AVX_512bit); __ vpmaddubsw(merge_ab_bc1, translated1, pack16_op, Assembler::AVX_512bit); __ vpmaddubsw(merge_ab_bc2, translated2, pack16_op, Assembler::AVX_512bit); __ vpmaddubsw(merge_ab_bc3, translated3, pack16_op, Assembler::AVX_512bit); // Now do the same with packed 16-bit values. // We start with [0000cccc | ccdddddd | 0000aaaa | aabbbbbb] // pack32_op is 0x00011000 (2^12, 1), so this multiplies [0000aaaa | aabbbbbb] by 2^12 // and adds [0000cccc | ccdddddd] to yield [00000000 | aaaaaabb | bbbbcccc | ccdddddd] __ vpmaddwd(merged0, merge_ab_bc0, pack32_op, Assembler::AVX_512bit); __ vpmaddwd(merged1, merge_ab_bc1, pack32_op, Assembler::AVX_512bit); __ vpmaddwd(merged2, merge_ab_bc2, pack32_op, Assembler::AVX_512bit); __ vpmaddwd(merged3, merge_ab_bc3, pack32_op, Assembler::AVX_512bit); // The join vectors specify which byte from which vector goes into the outputs // One of every 4 bytes in the extended vector is zero, so we pack them into their // final positions in the register for storing (256 bytes in, 192 bytes out) __ evpermt2b(merged0, join01, merged1, Assembler::AVX_512bit); __ evpermt2b(merged1, join12, merged2, Assembler::AVX_512bit); __ evpermt2b(merged2, join23, merged3, Assembler::AVX_512bit); // Store result __ evmovdquq(Address(dest, dp, Address::times_1, 0x00), merged0, Assembler::AVX_512bit); __ evmovdquq(Address(dest, dp, Address::times_1, 0x40), merged1, Assembler::AVX_512bit); __ evmovdquq(Address(dest, dp, Address::times_1, 0x80), merged2, Assembler::AVX_512bit); __ addptr(source, 0x100); __ addptr(dest, 0xc0); __ subl(length, 0x100); __ cmpl(length, 64 * 4); __ jcc(Assembler::greaterEqual, L_process256); // At this point, we've decoded 64 * 4 * n bytes. // The remaining length will be <= 64 * 4 - 1. // UNLESS there was an error decoding the first 256-byte chunk. In this // case, the length will be arbitrarily long. // // Note that this will be the path for MIME-encoded strings. __ BIND(L_process64); __ evmovdquq(pack24bits, ExternalAddress(StubRoutines::x86::base64_vbmi_pack_vec_addr()), Assembler::AVX_512bit, r13); __ cmpl(length, 63); __ jcc(Assembler::lessEqual, L_finalBit); __ mov64(rax, 0x0000ffffffffffff); __ kmovql(k2, rax); __ align32(); __ BIND(L_process64Loop); // Handle first 64-byte block __ evmovdquq(input0, Address(source, start_offset), Assembler::AVX_512bit); __ evmovdquq(translated0, lookup_lo, Assembler::AVX_512bit); __ evpermt2b(translated0, input0, lookup_hi, Assembler::AVX_512bit); __ vpor(errorvec, translated0, input0, Assembler::AVX_512bit); // Check for error and bomb out before updating dest __ evpmovb2m(k3, errorvec, Assembler::AVX_512bit); __ kortestql(k3, k3); __ jcc(Assembler::notZero, L_exit); // Pack output register, selecting correct byte ordering __ vpmaddubsw(merge_ab_bc0, translated0, pack16_op, Assembler::AVX_512bit); __ vpmaddwd(merged0, merge_ab_bc0, pack32_op, Assembler::AVX_512bit); __ vpermb(merged0, pack24bits, merged0, Assembler::AVX_512bit); __ evmovdqub(Address(dest, dp), k2, merged0, true, Assembler::AVX_512bit); __ subl(length, 64); __ addptr(source, 64); __ addptr(dest, 48); __ cmpl(length, 64); __ jcc(Assembler::greaterEqual, L_process64Loop); __ cmpl(length, 0); __ jcc(Assembler::lessEqual, L_exit); __ BIND(L_finalBit); // Now have 1 to 63 bytes left to decode // I was going to let Java take care of the final fragment // however it will repeatedly call this routine for every 4 bytes // of input data, so handle the rest here. __ movq(rax, -1); __ bzhiq(rax, rax, length); // Input mask in rax __ movl(output_size, length); __ shrl(output_size, 2); // Find (len / 4) * 3 (output length) __ lea(output_size, Address(output_size, output_size, Address::times_2, 0)); // output_size in r13 // Strip pad characters, if any, and adjust length and mask __ addq(length, start_offset); __ cmpb(Address(source, length, Address::times_1, -1), '='); __ jcc(Assembler::equal, L_padding); __ BIND(L_donePadding); __ subq(length, start_offset); // Output size is (64 - output_size), output mask is (all 1s >> output_size). __ kmovql(input_mask, rax); __ movq(output_mask, -1); __ bzhiq(output_mask, output_mask, output_size); // Load initial input with all valid base64 characters. Will be used // in merging source bytes to avoid masking when determining if an error occurred. __ movl(rax, 0x61616161); __ evpbroadcastd(input_initial_valid_b64, rax, Assembler::AVX_512bit); // A register containing all invalid base64 decoded values __ movl(rax, 0x80808080); __ evpbroadcastd(invalid_b64, rax, Assembler::AVX_512bit); // input_mask is in k1 // output_size is in r13 // output_mask is in r15 // zmm0 - free // zmm1 - 0x00011000 // zmm2 - 0x01400140 // zmm3 - errorvec // zmm4 - pack vector // zmm5 - lookup_lo // zmm6 - lookup_hi // zmm7 - errorvec // zmm8 - 0x61616161 // zmm9 - 0x80808080 // Load only the bytes from source, merging into our "fully-valid" register __ evmovdqub(input_initial_valid_b64, input_mask, Address(source, start_offset, Address::times_1, 0x0), true, Assembler::AVX_512bit); // Decode all bytes within our merged input __ evmovdquq(tmp, lookup_lo, Assembler::AVX_512bit); __ evpermt2b(tmp, input_initial_valid_b64, lookup_hi, Assembler::AVX_512bit); __ evporq(mask, tmp, input_initial_valid_b64, Assembler::AVX_512bit); // Check for error. Compare (decoded | initial) to all invalid. // If any bytes have their high-order bit set, then we have an error. __ evptestmb(k2, mask, invalid_b64, Assembler::AVX_512bit); __ kortestql(k2, k2); // If we have an error, use the brute force loop to decode what we can (4-byte chunks). __ jcc(Assembler::notZero, L_bruteForce); // Shuffle output bytes __ vpmaddubsw(tmp, tmp, pack16_op, Assembler::AVX_512bit); __ vpmaddwd(tmp, tmp, pack32_op, Assembler::AVX_512bit); __ vpermb(tmp, pack24bits, tmp, Assembler::AVX_512bit); __ kmovql(k1, output_mask); __ evmovdqub(Address(dest, dp), k1, tmp, true, Assembler::AVX_512bit); __ addptr(dest, output_size); __ BIND(L_exit); __ vzeroupper(); __ pop(rax); // Get original dest value __ subptr(dest, rax); // Number of bytes converted __ movptr(rax, dest); __ pop(rbx); __ pop(r15); __ pop(r14); __ pop(r13); __ pop(r12); __ leave(); __ ret(0); __ BIND(L_loadURL); __ evmovdquq(lookup_lo, ExternalAddress(StubRoutines::x86::base64_vbmi_lookup_lo_url_addr()), Assembler::AVX_512bit, r13); __ evmovdquq(lookup_hi, ExternalAddress(StubRoutines::x86::base64_vbmi_lookup_hi_url_addr()), Assembler::AVX_512bit, r13); __ jmp(L_continue); __ BIND(L_padding); __ decrementq(output_size, 1); __ shrq(rax, 1); __ cmpb(Address(source, length, Address::times_1, -2), '='); __ jcc(Assembler::notEqual, L_donePadding); __ decrementq(output_size, 1); __ shrq(rax, 1); __ jmp(L_donePadding); __ align32(); __ BIND(L_bruteForce); } // End of if(avx512_vbmi) if (VM_Version::supports_avx2()) { Label L_tailProc, L_topLoop, L_enterLoop; __ cmpl(isMIME, 0); __ jcc(Assembler::notEqual, L_lastChunk); // Check for buffer too small (for algorithm) __ subl(length, 0x2c); __ jcc(Assembler::less, L_tailProc); __ shll(isURL, 2); // Algorithm adapted from https://arxiv.org/abs/1704.00605, "Faster Base64 // Encoding and Decoding using AVX2 Instructions". URL modifications added. // Set up constants __ lea(r13, ExternalAddress(StubRoutines::x86::base64_AVX2_decode_tables_addr())); __ vpbroadcastd(xmm4, Address(r13, isURL, Address::times_1), Assembler::AVX_256bit); // 2F or 5F __ vpbroadcastd(xmm10, Address(r13, isURL, Address::times_1, 0x08), Assembler::AVX_256bit); // -1 or -4 __ vmovdqu(xmm12, Address(r13, 0x10)); // permute __ vmovdqu(xmm13, Address(r13, 0x30)); // shuffle __ vpbroadcastd(xmm7, Address(r13, 0x50), Assembler::AVX_256bit); // merge __ vpbroadcastd(xmm6, Address(r13, 0x54), Assembler::AVX_256bit); // merge mult __ lea(r13, ExternalAddress(StubRoutines::x86::base64_AVX2_decode_LUT_tables_addr())); __ shll(isURL, 4); __ vmovdqu(xmm11, Address(r13, isURL, Address::times_1, 0x00)); // lut_lo __ vmovdqu(xmm8, Address(r13, isURL, Address::times_1, 0x20)); // lut_roll __ shrl(isURL, 6); // restore isURL __ vmovdqu(xmm9, Address(r13, 0x80)); // lut_hi __ jmp(L_enterLoop); __ align32(); __ bind(L_topLoop); // Add in the offset value (roll) to get 6-bit out values __ vpaddb(xmm0, xmm0, xmm2, Assembler::AVX_256bit); // Merge and permute the output bits into appropriate output byte lanes __ vpmaddubsw(xmm0, xmm0, xmm7, Assembler::AVX_256bit); __ vpmaddwd(xmm0, xmm0, xmm6, Assembler::AVX_256bit); __ vpshufb(xmm0, xmm0, xmm13, Assembler::AVX_256bit); __ vpermd(xmm0, xmm12, xmm0, Assembler::AVX_256bit); // Store the output bytes __ vmovdqu(Address(dest, dp, Address::times_1, 0), xmm0); __ addptr(source, 0x20); __ addptr(dest, 0x18); __ subl(length, 0x20); __ jcc(Assembler::less, L_tailProc); __ bind(L_enterLoop); // Load in encoded string (32 bytes) __ vmovdqu(xmm2, Address(source, start_offset, Address::times_1, 0x0)); // Extract the high nibble for indexing into the lut tables. High 4 bits are don't care. __ vpsrld(xmm1, xmm2, 0x4, Assembler::AVX_256bit); __ vpand(xmm1, xmm4, xmm1, Assembler::AVX_256bit); // Extract the low nibble. 5F/2F will isolate the low-order 4 bits. High 4 bits are don't care. __ vpand(xmm3, xmm2, xmm4, Assembler::AVX_256bit); // Check for special-case (0x2F or 0x5F (URL)) __ vpcmpeqb(xmm0, xmm4, xmm2, Assembler::AVX_256bit); // Get the bitset based on the low nibble. vpshufb uses low-order 4 bits only. __ vpshufb(xmm3, xmm11, xmm3, Assembler::AVX_256bit); // Get the bit value of the high nibble __ vpshufb(xmm5, xmm9, xmm1, Assembler::AVX_256bit); // Make sure 2F / 5F shows as valid __ vpandn(xmm3, xmm0, xmm3, Assembler::AVX_256bit); // Make adjustment for roll index. For non-URL, this is a no-op, // for URL, this adjusts by -4. This is to properly index the // roll value for 2F / 5F. __ vpand(xmm0, xmm0, xmm10, Assembler::AVX_256bit); // If the and of the two is non-zero, we have an invalid input character __ vptest(xmm3, xmm5); // Extract the "roll" value - value to add to the input to get 6-bit out value __ vpaddb(xmm0, xmm0, xmm1, Assembler::AVX_256bit); // Handle 2F / 5F __ vpshufb(xmm0, xmm8, xmm0, Assembler::AVX_256bit); __ jcc(Assembler::equal, L_topLoop); // Fall through on error __ bind(L_tailProc); __ addl(length, 0x2c); __ vzeroupper(); } // Use non-AVX code to decode 4-byte chunks into 3 bytes of output // Register state (Linux): // r12-15 - saved on stack // rdi - src // rsi - sp // rdx - sl // rcx - dst // r8 - dp // r9 - isURL // Register state (Windows): // r12-15 - saved on stack // rcx - src // rdx - sp // r8 - sl // r9 - dst // r12 - dp // r10 - isURL // Registers (common): // length (r14) - bytes in src const Register decode_table = r11; const Register out_byte_count = rbx; const Register byte1 = r13; const Register byte2 = r15; const Register byte3 = WIN64_ONLY(r8) NOT_WIN64(rdx); const Register byte4 = WIN64_ONLY(r10) NOT_WIN64(r9); __ bind(L_lastChunk); __ shrl(length, 2); // Multiple of 4 bytes only - length is # 4-byte chunks __ cmpl(length, 0); __ jcc(Assembler::lessEqual, L_exit_no_vzero); __ shll(isURL, 8); // index into decode table based on isURL __ lea(decode_table, ExternalAddress(StubRoutines::x86::base64_decoding_table_addr())); __ addptr(decode_table, isURL); __ jmp(L_bottomLoop); __ align32(); __ BIND(L_forceLoop); __ shll(byte1, 18); __ shll(byte2, 12); __ shll(byte3, 6); __ orl(byte1, byte2); __ orl(byte1, byte3); __ orl(byte1, byte4); __ addptr(source, 4); __ movb(Address(dest, dp, Address::times_1, 2), byte1); __ shrl(byte1, 8); __ movb(Address(dest, dp, Address::times_1, 1), byte1); __ shrl(byte1, 8); __ movb(Address(dest, dp, Address::times_1, 0), byte1); __ addptr(dest, 3); __ decrementl(length, 1); __ jcc(Assembler::zero, L_exit_no_vzero); __ BIND(L_bottomLoop); __ load_unsigned_byte(byte1, Address(source, start_offset, Address::times_1, 0x00)); __ load_unsigned_byte(byte2, Address(source, start_offset, Address::times_1, 0x01)); __ load_signed_byte(byte1, Address(decode_table, byte1)); __ load_signed_byte(byte2, Address(decode_table, byte2)); __ load_unsigned_byte(byte3, Address(source, start_offset, Address::times_1, 0x02)); __ load_unsigned_byte(byte4, Address(source, start_offset, Address::times_1, 0x03)); __ load_signed_byte(byte3, Address(decode_table, byte3)); __ load_signed_byte(byte4, Address(decode_table, byte4)); __ mov(rax, byte1); __ orl(rax, byte2); __ orl(rax, byte3); __ orl(rax, byte4); __ jcc(Assembler::positive, L_forceLoop); __ BIND(L_exit_no_vzero); __ pop(rax); // Get original dest value __ subptr(dest, rax); // Number of bytes converted __ movptr(rax, dest); __ pop(rbx); __ pop(r15); __ pop(r14); __ pop(r13); __ pop(r12); __ leave(); __ ret(0); return start; } /** * Arguments: * * Inputs: * c_rarg0 - int crc * c_rarg1 - byte* buf * c_rarg2 - int length * * Output: * rax - int crc result */ address StubGenerator::generate_updateBytesCRC32() { assert(UseCRC32Intrinsics, "need AVX and CLMUL instructions"); __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::updateBytesCRC32_id; StubCodeMark mark(this, stub_id); address start = __ pc(); // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...) // Unix: rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...) // rscratch1: r10 const Register crc = c_rarg0; // crc const Register buf = c_rarg1; // source java byte array address const Register len = c_rarg2; // length const Register table = c_rarg3; // crc_table address (reuse register) const Register tmp1 = r11; const Register tmp2 = r10; assert_different_registers(crc, buf, len, table, tmp1, tmp2, rax); BLOCK_COMMENT("Entry:"); __ enter(); // required for proper stackwalking of RuntimeStub frame if (VM_Version::supports_sse4_1() && VM_Version::supports_avx512_vpclmulqdq() && VM_Version::supports_avx512bw() && VM_Version::supports_avx512vl()) { // The constants used in the CRC32 algorithm requires the 1's compliment of the initial crc value. // However, the constant table for CRC32-C assumes the original crc value. Account for this // difference before calling and after returning. __ lea(table, ExternalAddress(StubRoutines::x86::crc_table_avx512_addr())); __ notl(crc); __ kernel_crc32_avx512(crc, buf, len, table, tmp1, tmp2); __ notl(crc); } else { __ kernel_crc32(crc, buf, len, table, tmp1); } __ movl(rax, crc); __ vzeroupper(); __ leave(); // required for proper stackwalking of RuntimeStub frame __ ret(0); return start; } /** * Arguments: * * Inputs: * c_rarg0 - int crc * c_rarg1 - byte* buf * c_rarg2 - long length * c_rarg3 - table_start - optional (present only when doing a library_call, * not used by x86 algorithm) * * Output: * rax - int crc result */ address StubGenerator::generate_updateBytesCRC32C(bool is_pclmulqdq_supported) { assert(UseCRC32CIntrinsics, "need SSE4_2"); __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::updateBytesCRC32C_id; StubCodeMark mark(this, stub_id); address start = __ pc(); //reg.arg int#0 int#1 int#2 int#3 int#4 int#5 float regs //Windows RCX RDX R8 R9 none none XMM0..XMM3 //Lin / Sol RDI RSI RDX RCX R8 R9 XMM0..XMM7 const Register crc = c_rarg0; // crc const Register buf = c_rarg1; // source java byte array address const Register len = c_rarg2; // length const Register a = rax; const Register j = r9; const Register k = r10; const Register l = r11; #ifdef _WIN64 const Register y = rdi; const Register z = rsi; #else const Register y = rcx; const Register z = r8; #endif assert_different_registers(crc, buf, len, a, j, k, l, y, z); BLOCK_COMMENT("Entry:"); __ enter(); // required for proper stackwalking of RuntimeStub frame Label L_continue; if (VM_Version::supports_sse4_1() && VM_Version::supports_avx512_vpclmulqdq() && VM_Version::supports_avx512bw() && VM_Version::supports_avx512vl()) { Label L_doSmall; __ cmpl(len, 384); __ jcc(Assembler::lessEqual, L_doSmall); __ lea(j, ExternalAddress(StubRoutines::x86::crc32c_table_avx512_addr())); __ kernel_crc32_avx512(crc, buf, len, j, l, k); __ jmp(L_continue); __ bind(L_doSmall); } #ifdef _WIN64 __ push(y); __ push(z); #endif __ crc32c_ipl_alg2_alt2(crc, buf, len, a, j, k, l, y, z, c_farg0, c_farg1, c_farg2, is_pclmulqdq_supported); #ifdef _WIN64 __ pop(z); __ pop(y); #endif __ bind(L_continue); __ movl(rax, crc); __ vzeroupper(); __ leave(); // required for proper stackwalking of RuntimeStub frame __ ret(0); return start; } /** * Arguments: * * Input: * c_rarg0 - x address * c_rarg1 - x length * c_rarg2 - y address * c_rarg3 - y length * not Win64 * c_rarg4 - z address * Win64 * rsp+40 - z address */ address StubGenerator::generate_multiplyToLen() { __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::multiplyToLen_id; StubCodeMark mark(this, stub_id); address start = __ pc(); // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...) // Unix: rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...) const Register x = rdi; const Register xlen = rax; const Register y = rsi; const Register ylen = rcx; const Register z = r8; // Next registers will be saved on stack in multiply_to_len(). const Register tmp0 = r11; const Register tmp1 = r12; const Register tmp2 = r13; const Register tmp3 = r14; const Register tmp4 = r15; const Register tmp5 = rbx; BLOCK_COMMENT("Entry:"); __ enter(); // required for proper stackwalking of RuntimeStub frame setup_arg_regs(4); // x => rdi, xlen => rsi, y => rdx // ylen => rcx, z => r8 // r9 and r10 may be used to save non-volatile registers #ifdef _WIN64 // last argument (#4) is on stack on Win64 __ movptr(z, Address(rsp, 6 * wordSize)); #endif __ movptr(xlen, rsi); __ movptr(y, rdx); __ multiply_to_len(x, xlen, y, ylen, z, tmp0, tmp1, tmp2, tmp3, tmp4, tmp5); restore_arg_regs(); __ leave(); // required for proper stackwalking of RuntimeStub frame __ ret(0); return start; } /** * Arguments: * * Input: * c_rarg0 - obja address * c_rarg1 - objb address * c_rarg3 - length length * c_rarg4 - scale log2_array_indxscale * * Output: * rax - int >= mismatched index, < 0 bitwise complement of tail */ address StubGenerator::generate_vectorizedMismatch() { __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::vectorizedMismatch_id; StubCodeMark mark(this, stub_id); address start = __ pc(); BLOCK_COMMENT("Entry:"); __ enter(); #ifdef _WIN64 // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...) const Register scale = c_rarg0; //rcx, will exchange with r9 const Register objb = c_rarg1; //rdx const Register length = c_rarg2; //r8 const Register obja = c_rarg3; //r9 __ xchgq(obja, scale); //now obja and scale contains the correct contents const Register tmp1 = r10; const Register tmp2 = r11; #endif #ifndef _WIN64 // Unix: rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...) const Register obja = c_rarg0; //U:rdi const Register objb = c_rarg1; //U:rsi const Register length = c_rarg2; //U:rdx const Register scale = c_rarg3; //U:rcx const Register tmp1 = r8; const Register tmp2 = r9; #endif const Register result = rax; //return value const XMMRegister vec0 = xmm0; const XMMRegister vec1 = xmm1; const XMMRegister vec2 = xmm2; __ vectorized_mismatch(obja, objb, length, scale, result, tmp1, tmp2, vec0, vec1, vec2); __ vzeroupper(); __ leave(); __ ret(0); return start; } /** * Arguments: * // Input: // c_rarg0 - x address // c_rarg1 - x length // c_rarg2 - z address // c_rarg3 - z length * */ address StubGenerator::generate_squareToLen() { __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::squareToLen_id; StubCodeMark mark(this, stub_id); address start = __ pc(); // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...) // Unix: rdi, rsi, rdx, rcx (c_rarg0, c_rarg1, ...) const Register x = rdi; const Register len = rsi; const Register z = r8; const Register zlen = rcx; const Register tmp1 = r12; const Register tmp2 = r13; const Register tmp3 = r14; const Register tmp4 = r15; const Register tmp5 = rbx; BLOCK_COMMENT("Entry:"); __ enter(); // required for proper stackwalking of RuntimeStub frame setup_arg_regs(4); // x => rdi, len => rsi, z => rdx // zlen => rcx // r9 and r10 may be used to save non-volatile registers __ movptr(r8, rdx); __ square_to_len(x, len, z, zlen, tmp1, tmp2, tmp3, tmp4, tmp5, rdx, rax); restore_arg_regs(); __ leave(); // required for proper stackwalking of RuntimeStub frame __ ret(0); return start; } address StubGenerator::generate_method_entry_barrier() { __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::method_entry_barrier_id; StubCodeMark mark(this, stub_id); address start = __ pc(); Label deoptimize_label; __ push(-1); // cookie, this is used for writing the new rsp when deoptimizing BLOCK_COMMENT("Entry:"); __ enter(); // save rbp // save c_rarg0, because we want to use that value. // We could do without it but then we depend on the number of slots used by pusha __ push(c_rarg0); __ lea(c_rarg0, Address(rsp, wordSize * 3)); // 1 for cookie, 1 for rbp, 1 for c_rarg0 - this should be the return address __ pusha(); // The method may have floats as arguments, and we must spill them before calling // the VM runtime. assert(Argument::n_float_register_parameters_j == 8, "Assumption"); const int xmm_size = wordSize * 2; const int xmm_spill_size = xmm_size * Argument::n_float_register_parameters_j; __ subptr(rsp, xmm_spill_size); __ movdqu(Address(rsp, xmm_size * 7), xmm7); __ movdqu(Address(rsp, xmm_size * 6), xmm6); __ movdqu(Address(rsp, xmm_size * 5), xmm5); __ movdqu(Address(rsp, xmm_size * 4), xmm4); __ movdqu(Address(rsp, xmm_size * 3), xmm3); __ movdqu(Address(rsp, xmm_size * 2), xmm2); __ movdqu(Address(rsp, xmm_size * 1), xmm1); __ movdqu(Address(rsp, xmm_size * 0), xmm0); __ call_VM_leaf(CAST_FROM_FN_PTR(address, static_cast(BarrierSetNMethod::nmethod_stub_entry_barrier)), 1); __ movdqu(xmm0, Address(rsp, xmm_size * 0)); __ movdqu(xmm1, Address(rsp, xmm_size * 1)); __ movdqu(xmm2, Address(rsp, xmm_size * 2)); __ movdqu(xmm3, Address(rsp, xmm_size * 3)); __ movdqu(xmm4, Address(rsp, xmm_size * 4)); __ movdqu(xmm5, Address(rsp, xmm_size * 5)); __ movdqu(xmm6, Address(rsp, xmm_size * 6)); __ movdqu(xmm7, Address(rsp, xmm_size * 7)); __ addptr(rsp, xmm_spill_size); __ cmpl(rax, 1); // 1 means deoptimize __ jcc(Assembler::equal, deoptimize_label); __ popa(); __ pop(c_rarg0); __ leave(); __ addptr(rsp, 1 * wordSize); // cookie __ ret(0); __ BIND(deoptimize_label); __ popa(); __ pop(c_rarg0); __ leave(); // this can be taken out, but is good for verification purposes. getting a SIGSEGV // here while still having a correct stack is valuable __ testptr(rsp, Address(rsp, 0)); __ movptr(rsp, Address(rsp, 0)); // new rsp was written in the barrier __ jmp(Address(rsp, -1 * wordSize)); // jmp target should be callers verified_entry_point return start; } /** * Arguments: * * Input: * c_rarg0 - out address * c_rarg1 - in address * c_rarg2 - offset * c_rarg3 - len * not Win64 * c_rarg4 - k * Win64 * rsp+40 - k */ address StubGenerator::generate_mulAdd() { __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::mulAdd_id; StubCodeMark mark(this, stub_id); address start = __ pc(); // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...) // Unix: rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...) const Register out = rdi; const Register in = rsi; const Register offset = r11; const Register len = rcx; const Register k = r8; // Next registers will be saved on stack in mul_add(). const Register tmp1 = r12; const Register tmp2 = r13; const Register tmp3 = r14; const Register tmp4 = r15; const Register tmp5 = rbx; BLOCK_COMMENT("Entry:"); __ enter(); // required for proper stackwalking of RuntimeStub frame setup_arg_regs(4); // out => rdi, in => rsi, offset => rdx // len => rcx, k => r8 // r9 and r10 may be used to save non-volatile registers #ifdef _WIN64 // last argument is on stack on Win64 __ movl(k, Address(rsp, 6 * wordSize)); #endif __ movptr(r11, rdx); // move offset in rdx to offset(r11) __ mul_add(out, in, offset, len, k, tmp1, tmp2, tmp3, tmp4, tmp5, rdx, rax); restore_arg_regs(); __ leave(); // required for proper stackwalking of RuntimeStub frame __ ret(0); return start; } address StubGenerator::generate_bigIntegerRightShift() { __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::bigIntegerRightShiftWorker_id; StubCodeMark mark(this, stub_id); address start = __ pc(); Label Shift512Loop, ShiftTwo, ShiftTwoLoop, ShiftOne, Exit; // For Unix, the arguments are as follows: rdi, rsi, rdx, rcx, r8. const Register newArr = rdi; const Register oldArr = rsi; const Register newIdx = rdx; const Register shiftCount = rcx; // It was intentional to have shiftCount in rcx since it is used implicitly for shift. const Register totalNumIter = r8; // For windows, we use r9 and r10 as temps to save rdi and rsi. Thus we cannot allocate them for our temps. // For everything else, we prefer using r9 and r10 since we do not have to save them before use. const Register tmp1 = r11; // Caller save. const Register tmp2 = rax; // Caller save. const Register tmp3 = WIN64_ONLY(r12) NOT_WIN64(r9); // Windows: Callee save. Linux: Caller save. const Register tmp4 = WIN64_ONLY(r13) NOT_WIN64(r10); // Windows: Callee save. Linux: Caller save. const Register tmp5 = r14; // Callee save. const Register tmp6 = r15; const XMMRegister x0 = xmm0; const XMMRegister x1 = xmm1; const XMMRegister x2 = xmm2; BLOCK_COMMENT("Entry:"); __ enter(); // required for proper stackwalking of RuntimeStub frame #ifdef _WIN64 setup_arg_regs(4); // For windows, since last argument is on stack, we need to move it to the appropriate register. __ movl(totalNumIter, Address(rsp, 6 * wordSize)); // Save callee save registers. __ push(tmp3); __ push(tmp4); #endif __ push(tmp5); // Rename temps used throughout the code. const Register idx = tmp1; const Register nIdx = tmp2; __ xorl(idx, idx); // Start right shift from end of the array. // For example, if #iteration = 4 and newIdx = 1 // then dest[4] = src[4] >> shiftCount | src[3] <<< (shiftCount - 32) // if #iteration = 4 and newIdx = 0 // then dest[3] = src[4] >> shiftCount | src[3] <<< (shiftCount - 32) __ movl(idx, totalNumIter); __ movl(nIdx, idx); __ addl(nIdx, newIdx); // If vectorization is enabled, check if the number of iterations is at least 64 // If not, then go to ShifTwo processing 2 iterations if (VM_Version::supports_avx512_vbmi2()) { __ cmpptr(totalNumIter, (AVX3Threshold/64)); __ jcc(Assembler::less, ShiftTwo); if (AVX3Threshold < 16 * 64) { __ cmpl(totalNumIter, 16); __ jcc(Assembler::less, ShiftTwo); } __ evpbroadcastd(x0, shiftCount, Assembler::AVX_512bit); __ subl(idx, 16); __ subl(nIdx, 16); __ BIND(Shift512Loop); __ evmovdqul(x2, Address(oldArr, idx, Address::times_4, 4), Assembler::AVX_512bit); __ evmovdqul(x1, Address(oldArr, idx, Address::times_4), Assembler::AVX_512bit); __ vpshrdvd(x2, x1, x0, Assembler::AVX_512bit); __ evmovdqul(Address(newArr, nIdx, Address::times_4), x2, Assembler::AVX_512bit); __ subl(nIdx, 16); __ subl(idx, 16); __ jcc(Assembler::greaterEqual, Shift512Loop); __ addl(idx, 16); __ addl(nIdx, 16); } __ BIND(ShiftTwo); __ cmpl(idx, 2); __ jcc(Assembler::less, ShiftOne); __ subl(idx, 2); __ subl(nIdx, 2); __ BIND(ShiftTwoLoop); __ movl(tmp5, Address(oldArr, idx, Address::times_4, 8)); __ movl(tmp4, Address(oldArr, idx, Address::times_4, 4)); __ movl(tmp3, Address(oldArr, idx, Address::times_4)); __ shrdl(tmp5, tmp4); __ shrdl(tmp4, tmp3); __ movl(Address(newArr, nIdx, Address::times_4, 4), tmp5); __ movl(Address(newArr, nIdx, Address::times_4), tmp4); __ subl(nIdx, 2); __ subl(idx, 2); __ jcc(Assembler::greaterEqual, ShiftTwoLoop); __ addl(idx, 2); __ addl(nIdx, 2); // Do the last iteration __ BIND(ShiftOne); __ cmpl(idx, 1); __ jcc(Assembler::less, Exit); __ subl(idx, 1); __ subl(nIdx, 1); __ movl(tmp4, Address(oldArr, idx, Address::times_4, 4)); __ movl(tmp3, Address(oldArr, idx, Address::times_4)); __ shrdl(tmp4, tmp3); __ movl(Address(newArr, nIdx, Address::times_4), tmp4); __ BIND(Exit); __ vzeroupper(); // Restore callee save registers. __ pop(tmp5); #ifdef _WIN64 __ pop(tmp4); __ pop(tmp3); restore_arg_regs(); #endif __ leave(); // required for proper stackwalking of RuntimeStub frame __ ret(0); return start; } /** * Arguments: * * Input: * c_rarg0 - newArr address * c_rarg1 - oldArr address * c_rarg2 - newIdx * c_rarg3 - shiftCount * not Win64 * c_rarg4 - numIter * Win64 * rsp40 - numIter */ address StubGenerator::generate_bigIntegerLeftShift() { __ align(CodeEntryAlignment); StubGenStubId stub_id = StubGenStubId::bigIntegerLeftShiftWorker_id; StubCodeMark mark(this, stub_id); address start = __ pc(); Label Shift512Loop, ShiftTwo, ShiftTwoLoop, ShiftOne, Exit; // For Unix, the arguments are as follows: rdi, rsi, rdx, rcx, r8. const Register newArr = rdi; const Register oldArr = rsi; const Register newIdx = rdx; const Register shiftCount = rcx; // It was intentional to have shiftCount in rcx since it is used implicitly for shift. const Register totalNumIter = r8; // For windows, we use r9 and r10 as temps to save rdi and rsi. Thus we cannot allocate them for our temps. // For everything else, we prefer using r9 and r10 since we do not have to save them before use. const Register tmp1 = r11; // Caller save. const Register tmp2 = rax; // Caller save. const Register tmp3 = WIN64_ONLY(r12) NOT_WIN64(r9); // Windows: Callee save. Linux: Caller save. const Register tmp4 = WIN64_ONLY(r13) NOT_WIN64(r10); // Windows: Callee save. Linux: Caller save. const Register tmp5 = r14; // Callee save. const XMMRegister x0 = xmm0; const XMMRegister x1 = xmm1; const XMMRegister x2 = xmm2; BLOCK_COMMENT("Entry:"); __ enter(); // required for proper stackwalking of RuntimeStub frame #ifdef _WIN64 setup_arg_regs(4); // For windows, since last argument is on stack, we need to move it to the appropriate register. __ movl(totalNumIter, Address(rsp, 6 * wordSize)); // Save callee save registers. __ push(tmp3); __ push(tmp4); #endif __ push(tmp5); // Rename temps used throughout the code const Register idx = tmp1; const Register numIterTmp = tmp2; // Start idx from zero. __ xorl(idx, idx); // Compute interior pointer for new array. We do this so that we can use same index for both old and new arrays. __ lea(newArr, Address(newArr, newIdx, Address::times_4)); __ movl(numIterTmp, totalNumIter); // If vectorization is enabled, check if the number of iterations is at least 64 // If not, then go to ShiftTwo shifting two numbers at a time if (VM_Version::supports_avx512_vbmi2()) { __ cmpl(totalNumIter, (AVX3Threshold/64)); __ jcc(Assembler::less, ShiftTwo); if (AVX3Threshold < 16 * 64) { __ cmpl(totalNumIter, 16); __ jcc(Assembler::less, ShiftTwo); } __ evpbroadcastd(x0, shiftCount, Assembler::AVX_512bit); __ subl(numIterTmp, 16); __ BIND(Shift512Loop); __ evmovdqul(x1, Address(oldArr, idx, Address::times_4), Assembler::AVX_512bit); __ evmovdqul(x2, Address(oldArr, idx, Address::times_4, 0x4), Assembler::AVX_512bit); __ vpshldvd(x1, x2, x0, Assembler::AVX_512bit); __ evmovdqul(Address(newArr, idx, Address::times_4), x1, Assembler::AVX_512bit); __ addl(idx, 16); __ subl(numIterTmp, 16); __ jcc(Assembler::greaterEqual, Shift512Loop); __ addl(numIterTmp, 16); } __ BIND(ShiftTwo); __ cmpl(totalNumIter, 1); __ jcc(Assembler::less, Exit); __ movl(tmp3, Address(oldArr, idx, Address::times_4)); __ subl(numIterTmp, 2); __ jcc(Assembler::less, ShiftOne); __ BIND(ShiftTwoLoop); __ movl(tmp4, Address(oldArr, idx, Address::times_4, 0x4)); __ movl(tmp5, Address(oldArr, idx, Address::times_4, 0x8)); __ shldl(tmp3, tmp4); __ shldl(tmp4, tmp5); __ movl(Address(newArr, idx, Address::times_4), tmp3); __ movl(Address(newArr, idx, Address::times_4, 0x4), tmp4); __ movl(tmp3, tmp5); __ addl(idx, 2); __ subl(numIterTmp, 2); __ jcc(Assembler::greaterEqual, ShiftTwoLoop); // Do the last iteration __ BIND(ShiftOne); __ addl(numIterTmp, 2); __ cmpl(numIterTmp, 1); __ jcc(Assembler::less, Exit); __ movl(tmp4, Address(oldArr, idx, Address::times_4, 0x4)); __ shldl(tmp3, tmp4); __ movl(Address(newArr, idx, Address::times_4), tmp3); __ BIND(Exit); __ vzeroupper(); // Restore callee save registers. __ pop(tmp5); #ifdef _WIN64 __ pop(tmp4); __ pop(tmp3); restore_arg_regs(); #endif __ leave(); // required for proper stackwalking of RuntimeStub frame __ ret(0); return start; } void StubGenerator::generate_libm_stubs() { if (UseLibmIntrinsic && InlineIntrinsics) { if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dsin)) { StubRoutines::_dsin = generate_libmSin(); // from stubGenerator_x86_64_sin.cpp } if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcos)) { StubRoutines::_dcos = generate_libmCos(); // from stubGenerator_x86_64_cos.cpp } if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dtan)) { StubRoutines::_dtan = generate_libmTan(); // from stubGenerator_x86_64_tan.cpp } if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dtanh)) { StubRoutines::_dtanh = generate_libmTanh(); // from stubGenerator_x86_64_tanh.cpp } if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dcbrt)) { StubRoutines::_dcbrt = generate_libmCbrt(); // from stubGenerator_x86_64_cbrt.cpp } if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dexp)) { StubRoutines::_dexp = generate_libmExp(); // from stubGenerator_x86_64_exp.cpp } if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dpow)) { StubRoutines::_dpow = generate_libmPow(); // from stubGenerator_x86_64_pow.cpp } if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dlog)) { StubRoutines::_dlog = generate_libmLog(); // from stubGenerator_x86_64_log.cpp } if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_dlog10)) { StubRoutines::_dlog10 = generate_libmLog10(); // from stubGenerator_x86_64_log.cpp } } } /** * Arguments: * * Input: * c_rarg0 - float16 jshort * * Output: * xmm0 - float */ address StubGenerator::generate_float16ToFloat() { StubGenStubId stub_id = StubGenStubId::hf2f_id; StubCodeMark mark(this, stub_id); address start = __ pc(); BLOCK_COMMENT("Entry:"); // No need for RuntimeStub frame since it is called only during JIT compilation // Load value into xmm0 and convert __ flt16_to_flt(xmm0, c_rarg0); __ ret(0); return start; } /** * Arguments: * * Input: * xmm0 - float * * Output: * rax - float16 jshort */ address StubGenerator::generate_floatToFloat16() { StubGenStubId stub_id = StubGenStubId::f2hf_id; StubCodeMark mark(this, stub_id); address start = __ pc(); BLOCK_COMMENT("Entry:"); // No need for RuntimeStub frame since it is called only during JIT compilation // Convert and put result into rax __ flt_to_flt16(rax, xmm0, xmm1); __ ret(0); return start; } address StubGenerator::generate_cont_thaw(StubGenStubId stub_id) { if (!Continuations::enabled()) return nullptr; bool return_barrier; bool return_barrier_exception; Continuation::thaw_kind kind; switch (stub_id) { case cont_thaw_id: return_barrier = false; return_barrier_exception = false; kind = Continuation::thaw_top; break; case cont_returnBarrier_id: return_barrier = true; return_barrier_exception = false; kind = Continuation::thaw_return_barrier; break; case cont_returnBarrierExc_id: return_barrier = true; return_barrier_exception = true; kind = Continuation::thaw_return_barrier_exception; break; default: ShouldNotReachHere(); } StubCodeMark mark(this, stub_id); address start = __ pc(); // TODO: Handle Valhalla return types. May require generating different return barriers. if (!return_barrier) { // Pop return address. If we don't do this, we get a drift, // where the bottom-most frozen frame continuously grows. __ pop(c_rarg3); } else { __ movptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset())); } #ifdef ASSERT { Label L_good_sp; __ cmpptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset())); __ jcc(Assembler::equal, L_good_sp); __ stop("Incorrect rsp at thaw entry"); __ BIND(L_good_sp); } #endif // ASSERT if (return_barrier) { // Preserve possible return value from a method returning to the return barrier. __ push(rax); __ push_d(xmm0); } __ movptr(c_rarg0, r15_thread); __ movptr(c_rarg1, (return_barrier ? 1 : 0)); __ call_VM_leaf(CAST_FROM_FN_PTR(address, Continuation::prepare_thaw), 2); __ movptr(rbx, rax); if (return_barrier) { // Restore return value from a method returning to the return barrier. // No safepoint in the call to thaw, so even an oop return value should be OK. __ pop_d(xmm0); __ pop(rax); } #ifdef ASSERT { Label L_good_sp; __ cmpptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset())); __ jcc(Assembler::equal, L_good_sp); __ stop("Incorrect rsp after prepare thaw"); __ BIND(L_good_sp); } #endif // ASSERT // rbx contains the size of the frames to thaw, 0 if overflow or no more frames Label L_thaw_success; __ testptr(rbx, rbx); __ jccb(Assembler::notZero, L_thaw_success); __ jump(RuntimeAddress(SharedRuntime::throw_StackOverflowError_entry())); __ bind(L_thaw_success); // Make room for the thawed frames and align the stack. __ subptr(rsp, rbx); __ andptr(rsp, -StackAlignmentInBytes); if (return_barrier) { // Preserve possible return value from a method returning to the return barrier. (Again.) __ push(rax); __ push_d(xmm0); } // If we want, we can templatize thaw by kind, and have three different entries. __ movptr(c_rarg0, r15_thread); __ movptr(c_rarg1, kind); __ call_VM_leaf(Continuation::thaw_entry(), 2); __ movptr(rbx, rax); if (return_barrier) { // Restore return value from a method returning to the return barrier. (Again.) // No safepoint in the call to thaw, so even an oop return value should be OK. __ pop_d(xmm0); __ pop(rax); } else { // Return 0 (success) from doYield. __ xorptr(rax, rax); } // After thawing, rbx is the SP of the yielding frame. // Move there, and then to saved RBP slot. __ movptr(rsp, rbx); __ subptr(rsp, 2*wordSize); if (return_barrier_exception) { __ movptr(c_rarg0, r15_thread); __ movptr(c_rarg1, Address(rsp, wordSize)); // return address // rax still holds the original exception oop, save it before the call __ push(rax); __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), 2); __ movptr(rbx, rax); // Continue at exception handler: // rax: exception oop // rbx: exception handler // rdx: exception pc __ pop(rax); __ verify_oop(rax); __ pop(rbp); // pop out RBP here too __ pop(rdx); __ jmp(rbx); } else { // We are "returning" into the topmost thawed frame; see Thaw::push_return_frame __ pop(rbp); __ ret(0); } return start; } address StubGenerator::generate_cont_thaw() { return generate_cont_thaw(StubGenStubId::cont_thaw_id); } // TODO: will probably need multiple return barriers depending on return type address StubGenerator::generate_cont_returnBarrier() { return generate_cont_thaw(StubGenStubId::cont_returnBarrier_id); } address StubGenerator::generate_cont_returnBarrier_exception() { return generate_cont_thaw(StubGenStubId::cont_returnBarrierExc_id); } address StubGenerator::generate_cont_preempt_stub() { if (!Continuations::enabled()) return nullptr; StubGenStubId stub_id = StubGenStubId::cont_preempt_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ reset_last_Java_frame(true); // Set rsp to enterSpecial frame, i.e. remove all frames copied into the heap. __ movptr(rsp, Address(r15_thread, JavaThread::cont_entry_offset())); Label preemption_cancelled; __ movbool(rscratch1, Address(r15_thread, JavaThread::preemption_cancelled_offset())); __ testbool(rscratch1); __ jcc(Assembler::notZero, preemption_cancelled); // Remove enterSpecial frame from the stack and return to Continuation.run() to unmount. SharedRuntime::continuation_enter_cleanup(_masm); __ pop(rbp); __ ret(0); // We acquired the monitor after freezing the frames so call thaw to continue execution. __ bind(preemption_cancelled); __ movbool(Address(r15_thread, JavaThread::preemption_cancelled_offset()), false); __ lea(rbp, Address(rsp, checked_cast(ContinuationEntry::size()))); __ movptr(rscratch1, ExternalAddress(ContinuationEntry::thaw_call_pc_address())); __ jmp(rscratch1); return start; } // exception handler for upcall stubs address StubGenerator::generate_upcall_stub_exception_handler() { StubGenStubId stub_id = StubGenStubId::upcall_stub_exception_handler_id; StubCodeMark mark(this, stub_id); address start = __ pc(); // native caller has no idea how to handle exceptions // we just crash here. Up to callee to catch exceptions. __ verify_oop(rax); __ vzeroupper(); __ mov(c_rarg0, rax); __ andptr(rsp, -StackAlignmentInBytes); // align stack as required by ABI __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, UpcallLinker::handle_uncaught_exception))); __ should_not_reach_here(); return start; } // load Method* target of MethodHandle // j_rarg0 = jobject receiver // rbx = result address StubGenerator::generate_upcall_stub_load_target() { StubGenStubId stub_id = StubGenStubId::upcall_stub_load_target_id; StubCodeMark mark(this, stub_id); address start = __ pc(); __ resolve_global_jobject(j_rarg0, rscratch1); // Load target method from receiver __ load_heap_oop(rbx, Address(j_rarg0, java_lang_invoke_MethodHandle::form_offset()), rscratch1); __ load_heap_oop(rbx, Address(rbx, java_lang_invoke_LambdaForm::vmentry_offset()), rscratch1); __ load_heap_oop(rbx, Address(rbx, java_lang_invoke_MemberName::method_offset()), rscratch1); __ access_load_at(T_ADDRESS, IN_HEAP, rbx, Address(rbx, java_lang_invoke_ResolvedMethodName::vmtarget_offset()), noreg); __ movptr(Address(r15_thread, JavaThread::callee_target_offset()), rbx); // just in case callee is deoptimized __ ret(0); return start; } void StubGenerator::generate_lookup_secondary_supers_table_stub() { StubGenStubId stub_id = StubGenStubId::lookup_secondary_supers_table_id; StubCodeMark mark(this, stub_id); const Register r_super_klass = rax, r_sub_klass = rsi, result = rdi; for (int slot = 0; slot < Klass::SECONDARY_SUPERS_TABLE_SIZE; slot++) { StubRoutines::_lookup_secondary_supers_table_stubs[slot] = __ pc(); __ lookup_secondary_supers_table_const(r_sub_klass, r_super_klass, rdx, rcx, rbx, r11, // temps result, slot); __ ret(0); } } // Slow path implementation for UseSecondarySupersTable. address StubGenerator::generate_lookup_secondary_supers_table_slow_path_stub() { StubGenStubId stub_id = StubGenStubId::lookup_secondary_supers_table_slow_path_id; StubCodeMark mark(this, stub_id); address start = __ pc(); const Register r_super_klass = rax, r_array_base = rbx, r_array_index = rdx, r_sub_klass = rsi, r_bitmap = r11, result = rdi; Label L_success; __ lookup_secondary_supers_table_slow_path(r_super_klass, r_array_base, r_array_index, r_bitmap, rcx, rdi, // temps &L_success); // bind(L_failure); __ movl(result, 1); __ ret(0); __ bind(L_success); __ movl(result, 0); __ ret(0); return start; } void StubGenerator::create_control_words() { // Round to nearest, 64-bit mode, exceptions masked, flags specialized StubRoutines::x86::_mxcsr_std = EnableX86ECoreOpts ? 0x1FBF : 0x1F80; // Round to zero, 64-bit mode, exceptions masked, flags specialized StubRoutines::x86::_mxcsr_rz = EnableX86ECoreOpts ? 0x7FBF : 0x7F80; } // Initialization void StubGenerator::generate_preuniverse_stubs() { // atomic calls StubRoutines::_fence_entry = generate_orderaccess_fence(); } void StubGenerator::generate_initial_stubs() { // Generates all stubs and initializes the entry points // This platform-specific settings are needed by generate_call_stub() create_control_words(); // Initialize table for unsafe copy memeory check. if (UnsafeMemoryAccess::_table == nullptr) { UnsafeMemoryAccess::create_table(16 + 4); // 16 for copyMemory; 4 for setMemory } // entry points that exist in all platforms Note: This is code // that could be shared among different platforms - however the // benefit seems to be smaller than the disadvantage of having a // much more complicated generator structure. See also comment in // stubRoutines.hpp. StubRoutines::_forward_exception_entry = generate_forward_exception(); StubRoutines::_call_stub_entry = generate_call_stub(StubRoutines::_call_stub_return_address); // is referenced by megamorphic call StubRoutines::_catch_exception_entry = generate_catch_exception(); // platform dependent StubRoutines::x86::_get_previous_sp_entry = generate_get_previous_sp(); StubRoutines::x86::_verify_mxcsr_entry = generate_verify_mxcsr(); StubRoutines::x86::_f2i_fixup = generate_f2i_fixup(); StubRoutines::x86::_f2l_fixup = generate_f2l_fixup(); StubRoutines::x86::_d2i_fixup = generate_d2i_fixup(); StubRoutines::x86::_d2l_fixup = generate_d2l_fixup(); StubRoutines::x86::_float_sign_mask = generate_fp_mask(StubGenStubId::float_sign_mask_id, 0x7FFFFFFF7FFFFFFF); StubRoutines::x86::_float_sign_flip = generate_fp_mask(StubGenStubId::float_sign_flip_id, 0x8000000080000000); StubRoutines::x86::_double_sign_mask = generate_fp_mask(StubGenStubId::double_sign_mask_id, 0x7FFFFFFFFFFFFFFF); StubRoutines::x86::_double_sign_flip = generate_fp_mask(StubGenStubId::double_sign_flip_id, 0x8000000000000000); if (UseCRC32Intrinsics) { // set table address before stub generation which use it StubRoutines::_crc_table_adr = (address)StubRoutines::x86::_crc_table; StubRoutines::_updateBytesCRC32 = generate_updateBytesCRC32(); } if (UseCRC32CIntrinsics) { bool supports_clmul = VM_Version::supports_clmul(); StubRoutines::x86::generate_CRC32C_table(supports_clmul); StubRoutines::_crc32c_table_addr = (address)StubRoutines::x86::_crc32c_table; StubRoutines::_updateBytesCRC32C = generate_updateBytesCRC32C(supports_clmul); } if (VM_Version::supports_float16()) { // For results consistency both intrinsics should be enabled. // vmIntrinsics checks InlineIntrinsics flag, no need to check it here. if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_float16ToFloat) && vmIntrinsics::is_intrinsic_available(vmIntrinsics::_floatToFloat16)) { StubRoutines::_hf2f = generate_float16ToFloat(); StubRoutines::_f2hf = generate_floatToFloat16(); } } generate_libm_stubs(); StubRoutines::_fmod = generate_libmFmod(); // from stubGenerator_x86_64_fmod.cpp } void StubGenerator::generate_continuation_stubs() { // Continuation stubs: StubRoutines::_cont_thaw = generate_cont_thaw(); StubRoutines::_cont_returnBarrier = generate_cont_returnBarrier(); StubRoutines::_cont_returnBarrierExc = generate_cont_returnBarrier_exception(); StubRoutines::_cont_preempt_stub = generate_cont_preempt_stub(); } void StubGenerator::generate_final_stubs() { // Generates the rest of stubs and initializes the entry points // support for verify_oop (must happen after universe_init) if (VerifyOops) { StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop(); } // arraycopy stubs used by compilers generate_arraycopy_stubs(); StubRoutines::_method_entry_barrier = generate_method_entry_barrier(); #ifdef COMPILER2 if (UseSecondarySupersTable) { StubRoutines::_lookup_secondary_supers_table_slow_path_stub = generate_lookup_secondary_supers_table_slow_path_stub(); if (! InlineSecondarySupersTest) { generate_lookup_secondary_supers_table_stub(); } } #endif // COMPILER2 if (UseVectorizedMismatchIntrinsic) { StubRoutines::_vectorizedMismatch = generate_vectorizedMismatch(); } StubRoutines::_upcall_stub_exception_handler = generate_upcall_stub_exception_handler(); StubRoutines::_upcall_stub_load_target = generate_upcall_stub_load_target(); } void StubGenerator::generate_compiler_stubs() { #if COMPILER2_OR_JVMCI // Entry points that are C2 compiler specific. StubRoutines::x86::_vector_float_sign_mask = generate_vector_mask(StubGenStubId::vector_float_sign_mask_id, 0x7FFFFFFF7FFFFFFF); StubRoutines::x86::_vector_float_sign_flip = generate_vector_mask(StubGenStubId::vector_float_sign_flip_id, 0x8000000080000000); StubRoutines::x86::_vector_double_sign_mask = generate_vector_mask(StubGenStubId::vector_double_sign_mask_id, 0x7FFFFFFFFFFFFFFF); StubRoutines::x86::_vector_double_sign_flip = generate_vector_mask(StubGenStubId::vector_double_sign_flip_id, 0x8000000000000000); StubRoutines::x86::_vector_all_bits_set = generate_vector_mask(StubGenStubId::vector_all_bits_set_id, 0xFFFFFFFFFFFFFFFF); StubRoutines::x86::_vector_int_mask_cmp_bits = generate_vector_mask(StubGenStubId::vector_int_mask_cmp_bits_id, 0x0000000100000001); StubRoutines::x86::_vector_short_to_byte_mask = generate_vector_mask(StubGenStubId::vector_short_to_byte_mask_id, 0x00ff00ff00ff00ff); StubRoutines::x86::_vector_byte_perm_mask = generate_vector_byte_perm_mask(); StubRoutines::x86::_vector_int_to_byte_mask = generate_vector_mask(StubGenStubId::vector_int_to_byte_mask_id, 0x000000ff000000ff); StubRoutines::x86::_vector_int_to_short_mask = generate_vector_mask(StubGenStubId::vector_int_to_short_mask_id, 0x0000ffff0000ffff); StubRoutines::x86::_vector_32_bit_mask = generate_vector_custom_i32(StubGenStubId::vector_32_bit_mask_id, Assembler::AVX_512bit, 0xFFFFFFFF, 0, 0, 0); StubRoutines::x86::_vector_64_bit_mask = generate_vector_custom_i32(StubGenStubId::vector_64_bit_mask_id, Assembler::AVX_512bit, 0xFFFFFFFF, 0xFFFFFFFF, 0, 0); StubRoutines::x86::_vector_int_shuffle_mask = generate_vector_mask(StubGenStubId::vector_int_shuffle_mask_id, 0x0302010003020100); StubRoutines::x86::_vector_byte_shuffle_mask = generate_vector_byte_shuffle_mask(); StubRoutines::x86::_vector_short_shuffle_mask = generate_vector_mask(StubGenStubId::vector_short_shuffle_mask_id, 0x0100010001000100); StubRoutines::x86::_vector_long_shuffle_mask = generate_vector_mask(StubGenStubId::vector_long_shuffle_mask_id, 0x0000000100000000); StubRoutines::x86::_vector_long_sign_mask = generate_vector_mask(StubGenStubId::vector_long_sign_mask_id, 0x8000000000000000); StubRoutines::x86::_vector_iota_indices = generate_iota_indices(); StubRoutines::x86::_vector_count_leading_zeros_lut = generate_count_leading_zeros_lut(); StubRoutines::x86::_vector_reverse_bit_lut = generate_vector_reverse_bit_lut(); StubRoutines::x86::_vector_reverse_byte_perm_mask_long = generate_vector_reverse_byte_perm_mask_long(); StubRoutines::x86::_vector_reverse_byte_perm_mask_int = generate_vector_reverse_byte_perm_mask_int(); StubRoutines::x86::_vector_reverse_byte_perm_mask_short = generate_vector_reverse_byte_perm_mask_short(); if (VM_Version::supports_avx2() && !VM_Version::supports_avx512vl()) { StubRoutines::x86::_compress_perm_table32 = generate_compress_perm_table(StubGenStubId::compress_perm_table32_id); StubRoutines::x86::_compress_perm_table64 = generate_compress_perm_table(StubGenStubId::compress_perm_table64_id); StubRoutines::x86::_expand_perm_table32 = generate_expand_perm_table(StubGenStubId::expand_perm_table32_id); StubRoutines::x86::_expand_perm_table64 = generate_expand_perm_table(StubGenStubId::expand_perm_table64_id); } if (VM_Version::supports_avx2() && !VM_Version::supports_avx512_vpopcntdq()) { // lut implementation influenced by counting 1s algorithm from section 5-1 of Hackers' Delight. StubRoutines::x86::_vector_popcount_lut = generate_popcount_avx_lut(); } generate_aes_stubs(); generate_ghash_stubs(); generate_chacha_stubs(); generate_kyber_stubs(); generate_dilithium_stubs(); generate_sha3_stubs(); // data cache line writeback StubRoutines::_data_cache_writeback = generate_data_cache_writeback(); StubRoutines::_data_cache_writeback_sync = generate_data_cache_writeback_sync(); #ifdef COMPILER2 if ((UseAVX == 2) && EnableX86ECoreOpts) { generate_string_indexof(StubRoutines::_string_indexof_array); } #endif if (UseAdler32Intrinsics) { StubRoutines::_updateBytesAdler32 = generate_updateBytesAdler32(); } if (UsePoly1305Intrinsics) { StubRoutines::_poly1305_processBlocks = generate_poly1305_processBlocks(); } if (UseIntPolyIntrinsics) { StubRoutines::_intpoly_montgomeryMult_P256 = generate_intpoly_montgomeryMult_P256(); StubRoutines::_intpoly_assign = generate_intpoly_assign(); } if (UseMD5Intrinsics) { StubRoutines::_md5_implCompress = generate_md5_implCompress(StubGenStubId::md5_implCompress_id); StubRoutines::_md5_implCompressMB = generate_md5_implCompress(StubGenStubId::md5_implCompressMB_id); } if (UseSHA1Intrinsics) { StubRoutines::x86::_upper_word_mask_addr = generate_upper_word_mask(); StubRoutines::x86::_shuffle_byte_flip_mask_addr = generate_shuffle_byte_flip_mask(); StubRoutines::_sha1_implCompress = generate_sha1_implCompress(StubGenStubId::sha1_implCompress_id); StubRoutines::_sha1_implCompressMB = generate_sha1_implCompress(StubGenStubId::sha1_implCompressMB_id); } if (UseSHA256Intrinsics) { StubRoutines::x86::_k256_adr = (address)StubRoutines::x86::_k256; char* dst = (char*)StubRoutines::x86::_k256_W; char* src = (char*)StubRoutines::x86::_k256; for (int ii = 0; ii < 16; ++ii) { memcpy(dst + 32 * ii, src + 16 * ii, 16); memcpy(dst + 32 * ii + 16, src + 16 * ii, 16); } StubRoutines::x86::_k256_W_adr = (address)StubRoutines::x86::_k256_W; StubRoutines::x86::_pshuffle_byte_flip_mask_addr = generate_pshuffle_byte_flip_mask(); StubRoutines::_sha256_implCompress = generate_sha256_implCompress(StubGenStubId::sha256_implCompress_id); StubRoutines::_sha256_implCompressMB = generate_sha256_implCompress(StubGenStubId::sha256_implCompressMB_id); } if (UseSHA512Intrinsics) { StubRoutines::x86::_k512_W_addr = (address)StubRoutines::x86::_k512_W; StubRoutines::x86::_pshuffle_byte_flip_mask_addr_sha512 = generate_pshuffle_byte_flip_mask_sha512(); StubRoutines::_sha512_implCompress = generate_sha512_implCompress(StubGenStubId::sha512_implCompress_id); StubRoutines::_sha512_implCompressMB = generate_sha512_implCompress(StubGenStubId::sha512_implCompressMB_id); } if (UseBASE64Intrinsics) { if(VM_Version::supports_avx2()) { StubRoutines::x86::_avx2_shuffle_base64 = base64_avx2_shuffle_addr(); StubRoutines::x86::_avx2_input_mask_base64 = base64_avx2_input_mask_addr(); StubRoutines::x86::_avx2_lut_base64 = base64_avx2_lut_addr(); StubRoutines::x86::_avx2_decode_tables_base64 = base64_AVX2_decode_tables_addr(); StubRoutines::x86::_avx2_decode_lut_tables_base64 = base64_AVX2_decode_LUT_tables_addr(); } StubRoutines::x86::_encoding_table_base64 = base64_encoding_table_addr(); if (VM_Version::supports_avx512_vbmi()) { StubRoutines::x86::_shuffle_base64 = base64_shuffle_addr(); StubRoutines::x86::_lookup_lo_base64 = base64_vbmi_lookup_lo_addr(); StubRoutines::x86::_lookup_hi_base64 = base64_vbmi_lookup_hi_addr(); StubRoutines::x86::_lookup_lo_base64url = base64_vbmi_lookup_lo_url_addr(); StubRoutines::x86::_lookup_hi_base64url = base64_vbmi_lookup_hi_url_addr(); StubRoutines::x86::_pack_vec_base64 = base64_vbmi_pack_vec_addr(); StubRoutines::x86::_join_0_1_base64 = base64_vbmi_join_0_1_addr(); StubRoutines::x86::_join_1_2_base64 = base64_vbmi_join_1_2_addr(); StubRoutines::x86::_join_2_3_base64 = base64_vbmi_join_2_3_addr(); } StubRoutines::x86::_decoding_table_base64 = base64_decoding_table_addr(); StubRoutines::_base64_encodeBlock = generate_base64_encodeBlock(); StubRoutines::_base64_decodeBlock = generate_base64_decodeBlock(); } #ifdef COMPILER2 if (UseMultiplyToLenIntrinsic) { StubRoutines::_multiplyToLen = generate_multiplyToLen(); } if (UseSquareToLenIntrinsic) { StubRoutines::_squareToLen = generate_squareToLen(); } if (UseMulAddIntrinsic) { StubRoutines::_mulAdd = generate_mulAdd(); } if (VM_Version::supports_avx512_vbmi2()) { StubRoutines::_bigIntegerRightShiftWorker = generate_bigIntegerRightShift(); StubRoutines::_bigIntegerLeftShiftWorker = generate_bigIntegerLeftShift(); } if (UseMontgomeryMultiplyIntrinsic) { StubRoutines::_montgomeryMultiply = CAST_FROM_FN_PTR(address, SharedRuntime::montgomery_multiply); } if (UseMontgomerySquareIntrinsic) { StubRoutines::_montgomerySquare = CAST_FROM_FN_PTR(address, SharedRuntime::montgomery_square); } // Load x86_64_sort library on supported hardware to enable SIMD sort and partition intrinsics if (VM_Version::supports_avx512dq() || VM_Version::supports_avx2()) { void *libsimdsort = nullptr; char ebuf_[1024]; char dll_name_simd_sort[JVM_MAXPATHLEN]; if (os::dll_locate_lib(dll_name_simd_sort, sizeof(dll_name_simd_sort), Arguments::get_dll_dir(), "simdsort")) { libsimdsort = os::dll_load(dll_name_simd_sort, ebuf_, sizeof ebuf_); } // Get addresses for SIMD sort and partition routines if (libsimdsort != nullptr) { log_info(library)("Loaded library %s, handle " INTPTR_FORMAT, JNI_LIB_PREFIX "simdsort" JNI_LIB_SUFFIX, p2i(libsimdsort)); snprintf(ebuf_, sizeof(ebuf_), VM_Version::supports_avx512_simd_sort() ? "avx512_sort" : "avx2_sort"); StubRoutines::_array_sort = (address)os::dll_lookup(libsimdsort, ebuf_); snprintf(ebuf_, sizeof(ebuf_), VM_Version::supports_avx512_simd_sort() ? "avx512_partition" : "avx2_partition"); StubRoutines::_array_partition = (address)os::dll_lookup(libsimdsort, ebuf_); } } #endif // COMPILER2 #endif // COMPILER2_OR_JVMCI } StubGenerator::StubGenerator(CodeBuffer* code, StubGenBlobId blob_id) : StubCodeGenerator(code, blob_id) { switch(blob_id) { case preuniverse_id: generate_preuniverse_stubs(); break; case initial_id: generate_initial_stubs(); break; case continuation_id: generate_continuation_stubs(); break; case compiler_id: generate_compiler_stubs(); break; case final_id: generate_final_stubs(); break; default: fatal("unexpected blob id: %d", blob_id); break; }; } void StubGenerator_generate(CodeBuffer* code, StubGenBlobId blob_id) { StubGenerator g(code, blob_id); } #undef __