109 __ call(CAST_FROM_FN_PTR(address, OptoRuntime::handle_exception_C));
110 if (pc_offset == -1) {
111 pc_offset = __ offset();
112 }
113
114 // Set an oopmap for the call site. This oopmap will only be used if we
115 // are unwinding the stack. Hence, all locations will be dead.
116 // Callee-saved registers will be the same as the frame above (i.e.,
117 // handle_exception_stub), since they were restored when we got the
118 // exception.
119
120 OopMapSet *oop_maps = new OopMapSet();
121 oop_maps->add_gc_map(pc_offset - start, new OopMap(framesize_in_slots, 0));
122
123 __ reset_last_Java_frame(Rtemp);
124
125 __ raw_pop(FP, LR);
126
127 // Restore SP from its saved reg (FP) if the exception PC is a MethodHandle call site.
128 __ ldr(Rtemp, Address(Rthread, JavaThread::is_method_handle_return_offset()));
129 #ifdef AARCH64
130 Label skip;
131 __ cbz(Rtemp, skip);
132 __ mov(SP, Rmh_SP_save);
133 __ bind(skip);
134 #else
135 __ cmp(Rtemp, 0);
136 __ mov(SP, Rmh_SP_save, ne);
137 #endif
138
139 // R0 contains handler address
140 // Since this may be the deopt blob we must set R5 to look like we returned
141 // from the original pc that threw the exception
142
143 __ ldr(Rexception_pc, Address(Rthread, JavaThread::exception_pc_offset())); // R5/R20
144
145 __ ldr(Rexception_obj, Address(Rthread, JavaThread::exception_oop_offset())); // R4/R19
146 __ mov(Rtemp, 0);
147 #ifdef ASSERT
148 __ str(Rtemp, Address(Rthread, JavaThread::exception_handler_pc_offset()));
149 __ str(Rtemp, Address(Rthread, JavaThread::exception_pc_offset()));
150 #endif
151 // Clear the exception oop so GC no longer processes it as a root.
152 __ str(Rtemp, Address(Rthread, JavaThread::exception_oop_offset()));
153 __ jump(R0);
154
155 // -------------
156 // make sure all code is generated
157 masm->flush();
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109 __ call(CAST_FROM_FN_PTR(address, OptoRuntime::handle_exception_C));
110 if (pc_offset == -1) {
111 pc_offset = __ offset();
112 }
113
114 // Set an oopmap for the call site. This oopmap will only be used if we
115 // are unwinding the stack. Hence, all locations will be dead.
116 // Callee-saved registers will be the same as the frame above (i.e.,
117 // handle_exception_stub), since they were restored when we got the
118 // exception.
119
120 OopMapSet *oop_maps = new OopMapSet();
121 oop_maps->add_gc_map(pc_offset - start, new OopMap(framesize_in_slots, 0));
122
123 __ reset_last_Java_frame(Rtemp);
124
125 __ raw_pop(FP, LR);
126
127 // Restore SP from its saved reg (FP) if the exception PC is a MethodHandle call site.
128 __ ldr(Rtemp, Address(Rthread, JavaThread::is_method_handle_return_offset()));
129 __ cmp(Rtemp, 0);
130 __ mov(SP, Rmh_SP_save, ne);
131
132 // R0 contains handler address
133 // Since this may be the deopt blob we must set R5 to look like we returned
134 // from the original pc that threw the exception
135
136 __ ldr(Rexception_pc, Address(Rthread, JavaThread::exception_pc_offset())); // R5/R20
137
138 __ ldr(Rexception_obj, Address(Rthread, JavaThread::exception_oop_offset())); // R4/R19
139 __ mov(Rtemp, 0);
140 #ifdef ASSERT
141 __ str(Rtemp, Address(Rthread, JavaThread::exception_handler_pc_offset()));
142 __ str(Rtemp, Address(Rthread, JavaThread::exception_pc_offset()));
143 #endif
144 // Clear the exception oop so GC no longer processes it as a root.
145 __ str(Rtemp, Address(Rthread, JavaThread::exception_oop_offset()));
146 __ jump(R0);
147
148 // -------------
149 // make sure all code is generated
150 masm->flush();
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