1 /*
2 * Copyright (c) 2020, 2025, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
42 RuntimeAddress callback_addr(stub);
43
44 __ bind(entry());
45 InternalAddress safepoint_pc(masm.pc() - masm.offset() + _safepoint_offset);
46 __ adr(rscratch1, safepoint_pc);
47 __ str(rscratch1, Address(rthread, JavaThread::saved_exception_pc_offset()));
48 __ far_jump(callback_addr);
49 }
50
51 int C2EntryBarrierStub::max_size() const {
52 return 24;
53 }
54
55 void C2EntryBarrierStub::emit(C2_MacroAssembler& masm) {
56 __ bind(entry());
57 __ lea(rscratch1, RuntimeAddress(StubRoutines::method_entry_barrier()));
58 __ blr(rscratch1);
59 __ b(continuation());
60
61 __ bind(guard());
62 __ relocate(entry_guard_Relocation::spec());
63 __ emit_int32(0); // nmethod guard value
64 }
65
66 #undef __
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1 /*
2 * Copyright (c) 2020, 2026, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
42 RuntimeAddress callback_addr(stub);
43
44 __ bind(entry());
45 InternalAddress safepoint_pc(masm.pc() - masm.offset() + _safepoint_offset);
46 __ adr(rscratch1, safepoint_pc);
47 __ str(rscratch1, Address(rthread, JavaThread::saved_exception_pc_offset()));
48 __ far_jump(callback_addr);
49 }
50
51 int C2EntryBarrierStub::max_size() const {
52 return 24;
53 }
54
55 void C2EntryBarrierStub::emit(C2_MacroAssembler& masm) {
56 __ bind(entry());
57 __ lea(rscratch1, RuntimeAddress(StubRoutines::method_entry_barrier()));
58 __ blr(rscratch1);
59 __ b(continuation());
60
61 __ bind(guard());
62 __ emit_int32(0); // nmethod guard value
63 }
64
65 #undef __
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