27 #include "asm/macroAssembler.inline.hpp"
28 #include "ci/ciUtilities.hpp"
29 #include "gc/shared/barrierSet.hpp"
30 #include "gc/shared/barrierSetAssembler.hpp"
31 #include "interpreter/interpreter.hpp"
32 #include "nativeInst_x86.hpp"
33 #include "oops/instanceOop.hpp"
34 #include "oops/method.hpp"
35 #include "oops/objArrayKlass.hpp"
36 #include "oops/oop.inline.hpp"
37 #include "prims/methodHandles.hpp"
38 #include "runtime/frame.inline.hpp"
39 #include "runtime/handles.inline.hpp"
40 #include "runtime/sharedRuntime.hpp"
41 #include "runtime/stubCodeGenerator.hpp"
42 #include "runtime/stubRoutines.hpp"
43 #include "runtime/thread.inline.hpp"
44 #ifdef COMPILER2
45 #include "opto/runtime.hpp"
46 #endif
47
48 // Declaration and definition of StubGenerator (no .hpp file).
49 // For a more detailed description of the stub routine structure
50 // see the comment in stubRoutines.hpp
51
52 #define __ _masm->
53 #define TIMES_OOP (UseCompressedOops ? Address::times_4 : Address::times_8)
54 #define a__ ((Assembler*)_masm)->
55
56 #ifdef PRODUCT
57 #define BLOCK_COMMENT(str) /* nothing */
58 #else
59 #define BLOCK_COMMENT(str) __ block_comment(str)
60 #endif
61
62 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
63 const int MXCSR_MASK = 0xFFC0; // Mask out any pending exceptions
64
65 // Stub Code definitions
66
1009 __ push(c_rarg2);
1010 __ push(c_rarg3);
1011
1012 enum {
1013 // After previous pushes.
1014 oop_to_verify = 6 * wordSize,
1015 saved_rax = 7 * wordSize,
1016 saved_r10 = 8 * wordSize,
1017
1018 // Before the call to MacroAssembler::debug(), see below.
1019 return_addr = 16 * wordSize,
1020 error_msg = 17 * wordSize
1021 };
1022
1023 // get object
1024 __ movptr(rax, Address(rsp, oop_to_verify));
1025
1026 // make sure object is 'reasonable'
1027 __ testptr(rax, rax);
1028 __ jcc(Assembler::zero, exit); // if obj is NULL it is OK
1029 // Check if the oop is in the right area of memory
1030 __ movptr(c_rarg2, rax);
1031 __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_mask());
1032 __ andptr(c_rarg2, c_rarg3);
1033 __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_bits());
1034 __ cmpptr(c_rarg2, c_rarg3);
1035 __ jcc(Assembler::notZero, error);
1036
1037 // set r12 to heapbase for load_klass()
1038 __ reinit_heapbase();
1039
1040 // make sure klass is 'reasonable', which is not zero.
1041 __ load_klass(rax, rax); // get klass
1042 __ testptr(rax, rax);
1043 __ jcc(Assembler::zero, error); // if klass is NULL it is broken
1044
1045 // return if everything seems ok
1046 __ bind(exit);
1047 __ movptr(rax, Address(rsp, saved_rax)); // get saved rax back
1048 __ movptr(rscratch1, Address(rsp, saved_r10)); // get saved r10 back
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27 #include "asm/macroAssembler.inline.hpp"
28 #include "ci/ciUtilities.hpp"
29 #include "gc/shared/barrierSet.hpp"
30 #include "gc/shared/barrierSetAssembler.hpp"
31 #include "interpreter/interpreter.hpp"
32 #include "nativeInst_x86.hpp"
33 #include "oops/instanceOop.hpp"
34 #include "oops/method.hpp"
35 #include "oops/objArrayKlass.hpp"
36 #include "oops/oop.inline.hpp"
37 #include "prims/methodHandles.hpp"
38 #include "runtime/frame.inline.hpp"
39 #include "runtime/handles.inline.hpp"
40 #include "runtime/sharedRuntime.hpp"
41 #include "runtime/stubCodeGenerator.hpp"
42 #include "runtime/stubRoutines.hpp"
43 #include "runtime/thread.inline.hpp"
44 #ifdef COMPILER2
45 #include "opto/runtime.hpp"
46 #endif
47 #if INCLUDE_ZGC
48 #include "gc/z/zThreadLocalData.hpp"
49 #endif
50
51 // Declaration and definition of StubGenerator (no .hpp file).
52 // For a more detailed description of the stub routine structure
53 // see the comment in stubRoutines.hpp
54
55 #define __ _masm->
56 #define TIMES_OOP (UseCompressedOops ? Address::times_4 : Address::times_8)
57 #define a__ ((Assembler*)_masm)->
58
59 #ifdef PRODUCT
60 #define BLOCK_COMMENT(str) /* nothing */
61 #else
62 #define BLOCK_COMMENT(str) __ block_comment(str)
63 #endif
64
65 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
66 const int MXCSR_MASK = 0xFFC0; // Mask out any pending exceptions
67
68 // Stub Code definitions
69
1012 __ push(c_rarg2);
1013 __ push(c_rarg3);
1014
1015 enum {
1016 // After previous pushes.
1017 oop_to_verify = 6 * wordSize,
1018 saved_rax = 7 * wordSize,
1019 saved_r10 = 8 * wordSize,
1020
1021 // Before the call to MacroAssembler::debug(), see below.
1022 return_addr = 16 * wordSize,
1023 error_msg = 17 * wordSize
1024 };
1025
1026 // get object
1027 __ movptr(rax, Address(rsp, oop_to_verify));
1028
1029 // make sure object is 'reasonable'
1030 __ testptr(rax, rax);
1031 __ jcc(Assembler::zero, exit); // if obj is NULL it is OK
1032
1033 #if INCLUDE_ZGC
1034 if (UseZGC) {
1035 // Check if metadata bits indicate a bad oop
1036 __ testptr(rax, Address(r15_thread, ZThreadLocalData::address_bad_mask_offset()));
1037 __ jcc(Assembler::notZero, error);
1038 }
1039 #endif
1040
1041 // Check if the oop is in the right area of memory
1042 __ movptr(c_rarg2, rax);
1043 __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_mask());
1044 __ andptr(c_rarg2, c_rarg3);
1045 __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_bits());
1046 __ cmpptr(c_rarg2, c_rarg3);
1047 __ jcc(Assembler::notZero, error);
1048
1049 // set r12 to heapbase for load_klass()
1050 __ reinit_heapbase();
1051
1052 // make sure klass is 'reasonable', which is not zero.
1053 __ load_klass(rax, rax); // get klass
1054 __ testptr(rax, rax);
1055 __ jcc(Assembler::zero, error); // if klass is NULL it is broken
1056
1057 // return if everything seems ok
1058 __ bind(exit);
1059 __ movptr(rax, Address(rsp, saved_rax)); // get saved rax back
1060 __ movptr(rscratch1, Address(rsp, saved_r10)); // get saved r10 back
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