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src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp

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rev 48402 : 8193260: AArch64: JVMCI: Implement trampoline calls
Reviewed-by: adinn


 784   relocate(trampoline_stub_Relocation::spec(code()->insts()->start()
 785                                             + insts_call_instruction_offset));
 786   const int stub_start_offset = offset();
 787 
 788   // Now, create the trampoline stub's code:
 789   // - load the call
 790   // - call
 791   Label target;
 792   ldr(rscratch1, target);
 793   br(rscratch1);
 794   bind(target);
 795   assert(offset() - stub_start_offset == NativeCallTrampolineStub::data_offset,
 796          "should be");
 797   emit_int64((int64_t)dest);
 798 
 799   const address stub_start_addr = addr_at(stub_start_offset);
 800 
 801   assert(is_NativeCallTrampolineStub_at(stub_start_addr), "doesn't look like a trampoline");
 802 
 803   end_a_stub();
 804   return stub;
 805 }
 806 
 807 address MacroAssembler::ic_call(address entry, jint method_index) {
 808   RelocationHolder rh = virtual_call_Relocation::spec(pc(), method_index);
 809   // address const_ptr = long_constant((jlong)Universe::non_oop_word());
 810   // unsigned long offset;
 811   // ldr_constant(rscratch2, const_ptr);
 812   movptr(rscratch2, (uintptr_t)Universe::non_oop_word());
 813   return trampoline_call(Address(entry, rh));
 814 }
 815 
 816 // Implementation of call_VM versions
 817 
 818 void MacroAssembler::call_VM(Register oop_result,
 819                              address entry_point,
 820                              bool check_exceptions) {
 821   call_VM_helper(oop_result, entry_point, 0, check_exceptions);
 822 }
 823 
 824 void MacroAssembler::call_VM(Register oop_result,




 784   relocate(trampoline_stub_Relocation::spec(code()->insts()->start()
 785                                             + insts_call_instruction_offset));
 786   const int stub_start_offset = offset();
 787 
 788   // Now, create the trampoline stub's code:
 789   // - load the call
 790   // - call
 791   Label target;
 792   ldr(rscratch1, target);
 793   br(rscratch1);
 794   bind(target);
 795   assert(offset() - stub_start_offset == NativeCallTrampolineStub::data_offset,
 796          "should be");
 797   emit_int64((int64_t)dest);
 798 
 799   const address stub_start_addr = addr_at(stub_start_offset);
 800 
 801   assert(is_NativeCallTrampolineStub_at(stub_start_addr), "doesn't look like a trampoline");
 802 
 803   end_a_stub();
 804   return stub_start_addr;
 805 }
 806 
 807 address MacroAssembler::ic_call(address entry, jint method_index) {
 808   RelocationHolder rh = virtual_call_Relocation::spec(pc(), method_index);
 809   // address const_ptr = long_constant((jlong)Universe::non_oop_word());
 810   // unsigned long offset;
 811   // ldr_constant(rscratch2, const_ptr);
 812   movptr(rscratch2, (uintptr_t)Universe::non_oop_word());
 813   return trampoline_call(Address(entry, rh));
 814 }
 815 
 816 // Implementation of call_VM versions
 817 
 818 void MacroAssembler::call_VM(Register oop_result,
 819                              address entry_point,
 820                              bool check_exceptions) {
 821   call_VM_helper(oop_result, entry_point, 0, check_exceptions);
 822 }
 823 
 824 void MacroAssembler::call_VM(Register oop_result,


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