792 // rbx,: Method* 793 // rsi: senderSP must preserved for slow path, set SP to it on fast path 794 // rdx: scratch 795 // rdi: scratch 796 797 Label slow_path; 798 // If we need a safepoint check, generate full interpreter entry. 799 ExternalAddress state(SafepointSynchronize::address_of_state()); 800 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), 801 SafepointSynchronize::_not_synchronized); 802 __ jcc(Assembler::notEqual, slow_path); 803 804 // We don't generate local frame and don't align stack because 805 // we call stub code and there is no safepoint on this path. 806 807 // Load parameters 808 const Register crc = rax; // crc 809 const Register buf = rdx; // source java byte array address 810 const Register len = rdi; // length 811 812 // Arguments are reversed on java expression stack 813 __ movl(len, Address(rsp, wordSize)); // Length 814 // Calculate address of start element 815 if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) { 816 __ movptr(buf, Address(rsp, 3*wordSize)); // long buf 817 __ addptr(buf, Address(rsp, 2*wordSize)); // + offset 818 __ movl(crc, Address(rsp, 5*wordSize)); // Initial CRC 819 } else { 820 __ movptr(buf, Address(rsp, 3*wordSize)); // byte[] array 821 __ addptr(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size 822 __ addptr(buf, Address(rsp, 2*wordSize)); // + offset 823 __ movl(crc, Address(rsp, 4*wordSize)); // Initial CRC 824 } 825 826 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32()), crc, buf, len); 827 // result in rax 828 829 // _areturn 830 __ pop(rdi); // get return address 831 __ mov(rsp, rsi); // set sp to sender sp 832 __ jmp(rdi); 833 834 // generate a vanilla native entry as the slow path 835 __ bind(slow_path); 836 837 (void) generate_native_entry(false); 838 839 return entry; 840 } 841 return generate_native_entry(false); 842 } 843 844 // 845 // Interpreter stub for calling a native method. (asm interpreter) 846 // This sets up a somewhat different looking stack for calling the native method 847 // than the typical interpreter frame setup. 848 // 849 850 address InterpreterGenerator::generate_native_entry(bool synchronized) { 851 // determine code generation flags 852 bool inc_counter = UseCompiler || CountCompiledCalls; 853 854 // rbx,: Method* 855 // rsi: sender sp 856 // rsi: previous interpreter state (C++ interpreter) must preserve 857 address entry_point = __ pc(); | 792 // rbx,: Method* 793 // rsi: senderSP must preserved for slow path, set SP to it on fast path 794 // rdx: scratch 795 // rdi: scratch 796 797 Label slow_path; 798 // If we need a safepoint check, generate full interpreter entry. 799 ExternalAddress state(SafepointSynchronize::address_of_state()); 800 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), 801 SafepointSynchronize::_not_synchronized); 802 __ jcc(Assembler::notEqual, slow_path); 803 804 // We don't generate local frame and don't align stack because 805 // we call stub code and there is no safepoint on this path. 806 807 // Load parameters 808 const Register crc = rax; // crc 809 const Register buf = rdx; // source java byte array address 810 const Register len = rdi; // length 811 812 // value x86_32 813 // interp. arg ptr ESP + 4 814 // int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int len) 815 // 3 2 1 0 816 // int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len) 817 // 4 2,3 1 0 818 819 // Arguments are reversed on java expression stack 820 __ movl(len, Address(rsp, 4 + 0)); // Length 821 // Calculate address of start element 822 if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) { 823 __ movptr(buf, Address(rsp, 4 + 2 * wordSize)); // long buf 824 __ addptr(buf, Address(rsp, 4 + 1 * wordSize)); // + offset 825 __ movl(crc, Address(rsp, 4 + 4 * wordSize)); // Initial CRC 826 } else { 827 __ movptr(buf, Address(rsp, 4 + 2 * wordSize)); // byte[] array 828 __ addptr(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size 829 __ addptr(buf, Address(rsp, 4 + 1 * wordSize)); // + offset 830 __ movl(crc, Address(rsp, 4 + 3 * wordSize)); // Initial CRC 831 } 832 833 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32()), crc, buf, len); 834 // result in rax 835 836 // _areturn 837 __ pop(rdi); // get return address 838 __ mov(rsp, rsi); // set sp to sender sp 839 __ jmp(rdi); 840 841 // generate a vanilla native entry as the slow path 842 __ bind(slow_path); 843 844 (void) generate_native_entry(false); 845 846 return entry; 847 } 848 return generate_native_entry(false); 849 } 850 851 /** 852 * Method entry for static native methods: 853 * int java.util.zip.CRC32C.updateBytes(int crc, byte[] b, int off, int end) 854 * int java.util.zip.CRC32C.updateByteBuffer(int crc, long address, int off, int end) 855 */ 856 address InterpreterGenerator::generate_CRC32C_updateBytes_entry(AbstractInterpreter::MethodKind kind) { 857 if (UseCRC32CIntrinsics) { 858 address entry = __ pc(); 859 // Load parameters 860 const Register crc = rax; // crc 861 const Register buf = rcx; // source java byte array address 862 const Register len = rdx; // length 863 const Register end = len; 864 865 // value x86_32 866 // interp. arg ptr ESP + 4 867 // int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int end) 868 // 3 2 1 0 869 // int java.util.zip.CRC32.updateByteBuffer(int crc, long address, int off, int end) 870 // 4 2,3 1 0 871 872 // Arguments are reversed on java expression stack 873 __ movl(end, Address(rsp, 4 + 0)); // end 874 __ subl(len, Address(rsp, 4 + 1 * wordSize)); // end - offset == length 875 // Calculate address of start element 876 if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) { 877 __ movptr(buf, Address(rsp, 4 + 2 * wordSize)); // long address 878 __ addptr(buf, Address(rsp, 4 + 1 * wordSize)); // + offset 879 __ movl(crc, Address(rsp, 4 + 4 * wordSize)); // Initial CRC 880 } else { 881 __ movptr(buf, Address(rsp, 4 + 2 * wordSize)); // byte[] array 882 __ addptr(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size 883 __ addptr(buf, Address(rsp, 4 + 1 * wordSize)); // + offset 884 __ movl(crc, Address(rsp, 4 + 3 * wordSize)); // Initial CRC 885 } 886 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32C()), crc, buf, len); 887 // result in rax 888 // _areturn 889 __ pop(rdi); // get return address 890 __ mov(rsp, rsi); // set sp to sender sp 891 __ jmp(rdi); 892 893 return entry; 894 } 895 return generate_native_entry(false); 896 } 897 898 // 899 // Interpreter stub for calling a native method. (asm interpreter) 900 // This sets up a somewhat different looking stack for calling the native method 901 // than the typical interpreter frame setup. 902 // 903 904 address InterpreterGenerator::generate_native_entry(bool synchronized) { 905 // determine code generation flags 906 bool inc_counter = UseCompiler || CountCompiledCalls; 907 908 // rbx,: Method* 909 // rsi: sender sp 910 // rsi: previous interpreter state (C++ interpreter) must preserve 911 address entry_point = __ pc(); |