Mercurial > hg > graal-compiler
view src/cpu/ppc/vm/vtableStubs_ppc_64.cpp @ 19154:2d67f0540543
Use GraphBuilderPlugins.Registration mechanism to register GraalDirectivePlugins.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Thu, 05 Feb 2015 14:34:36 +0100 |
parents | 71a71b0bc844 |
children |
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/* * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. * Copyright 2012, 2014 SAP AG. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "asm/assembler.hpp" #include "asm/macroAssembler.inline.hpp" #include "code/vtableStubs.hpp" #include "interp_masm_ppc_64.hpp" #include "memory/resourceArea.hpp" #include "oops/instanceKlass.hpp" #include "oops/klassVtable.hpp" #include "runtime/sharedRuntime.hpp" #include "vmreg_ppc.inline.hpp" #ifdef COMPILER2 #include "opto/runtime.hpp" #endif #define __ masm-> #ifdef PRODUCT #define BLOCK_COMMENT(str) // nothing #else #define BLOCK_COMMENT(str) __ block_comment(str) #endif #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") #ifndef PRODUCT extern "C" void bad_compiled_vtable_index(JavaThread* thread, oopDesc* receiver, int index); #endif // Used by compiler only; may use only caller saved, non-argument // registers. VtableStub* VtableStubs::create_vtable_stub(int vtable_index) { // PPC port: use fixed size. const int code_length = VtableStub::pd_code_size_limit(true); VtableStub* s = new (code_length) VtableStub(true, vtable_index); ResourceMark rm; CodeBuffer cb(s->entry_point(), code_length); MacroAssembler* masm = new MacroAssembler(&cb); address start_pc; #ifndef PRODUCT if (CountCompiledCalls) { __ load_const(R11_scratch1, SharedRuntime::nof_megamorphic_calls_addr()); __ lwz(R12_scratch2, 0, R11_scratch1); __ addi(R12_scratch2, R12_scratch2, 1); __ stw(R12_scratch2, 0, R11_scratch1); } #endif assert(VtableStub::receiver_location() == R3_ARG1->as_VMReg(), "receiver expected in R3_ARG1"); // Get receiver klass. const Register rcvr_klass = R11_scratch1; // We might implicit NULL fault here. address npe_addr = __ pc(); // npe = null pointer exception __ load_klass_with_trap_null_check(rcvr_klass, R3); // Set method (in case of interpreted method), and destination address. int entry_offset = InstanceKlass::vtable_start_offset() + vtable_index*vtableEntry::size(); #ifndef PRODUCT if (DebugVtables) { Label L; // Check offset vs vtable length. const Register vtable_len = R12_scratch2; __ lwz(vtable_len, InstanceKlass::vtable_length_offset()*wordSize, rcvr_klass); __ cmpwi(CCR0, vtable_len, vtable_index*vtableEntry::size()); __ bge(CCR0, L); __ li(R12_scratch2, vtable_index); __ call_VM(noreg, CAST_FROM_FN_PTR(address, bad_compiled_vtable_index), R3_ARG1, R12_scratch2, false); __ bind(L); } #endif int v_off = entry_offset*wordSize + vtableEntry::method_offset_in_bytes(); __ ld(R19_method, v_off, rcvr_klass); #ifndef PRODUCT if (DebugVtables) { Label L; __ cmpdi(CCR0, R19_method, 0); __ bne(CCR0, L); __ stop("Vtable entry is ZERO", 102); __ bind(L); } #endif // If the vtable entry is null, the method is abstract. address ame_addr = __ pc(); // ame = abstract method error __ load_with_trap_null_check(R12_scratch2, in_bytes(Method::from_compiled_offset()), R19_method); __ mtctr(R12_scratch2); __ bctr(); masm->flush(); guarantee(__ pc() <= s->code_end(), "overflowed buffer"); s->set_exception_points(npe_addr, ame_addr); return s; } VtableStub* VtableStubs::create_itable_stub(int vtable_index) { // PPC port: use fixed size. const int code_length = VtableStub::pd_code_size_limit(false); VtableStub* s = new (code_length) VtableStub(false, vtable_index); ResourceMark rm; CodeBuffer cb(s->entry_point(), code_length); MacroAssembler* masm = new MacroAssembler(&cb); address start_pc; #ifndef PRODUCT if (CountCompiledCalls) { __ load_const(R11_scratch1, SharedRuntime::nof_megamorphic_calls_addr()); __ lwz(R12_scratch2, 0, R11_scratch1); __ addi(R12_scratch2, R12_scratch2, 1); __ stw(R12_scratch2, 0, R11_scratch1); } #endif assert(VtableStub::receiver_location() == R3_ARG1->as_VMReg(), "receiver expected in R3_ARG1"); // Entry arguments: // R19_method: Interface // R3_ARG1: Receiver // const Register rcvr_klass = R11_scratch1; const Register vtable_len = R12_scratch2; const Register itable_entry_addr = R21_tmp1; const Register itable_interface = R22_tmp2; // Get receiver klass. // We might implicit NULL fault here. address npe_addr = __ pc(); // npe = null pointer exception __ load_klass_with_trap_null_check(rcvr_klass, R3_ARG1); BLOCK_COMMENT("Load start of itable entries into itable_entry."); __ lwz(vtable_len, InstanceKlass::vtable_length_offset() * wordSize, rcvr_klass); __ slwi(vtable_len, vtable_len, exact_log2(vtableEntry::size() * wordSize)); __ add(itable_entry_addr, vtable_len, rcvr_klass); // Loop over all itable entries until desired interfaceOop(Rinterface) found. BLOCK_COMMENT("Increment itable_entry_addr in loop."); const int vtable_base_offset = InstanceKlass::vtable_start_offset() * wordSize; __ addi(itable_entry_addr, itable_entry_addr, vtable_base_offset + itableOffsetEntry::interface_offset_in_bytes()); const int itable_offset_search_inc = itableOffsetEntry::size() * wordSize; Label search; __ bind(search); __ ld(itable_interface, 0, itable_entry_addr); // Handle IncompatibleClassChangeError in itable stubs. // If the entry is NULL then we've reached the end of the table // without finding the expected interface, so throw an exception. BLOCK_COMMENT("Handle IncompatibleClassChangeError in itable stubs."); Label throw_icce; __ cmpdi(CCR1, itable_interface, 0); __ cmpd(CCR0, itable_interface, R19_method); __ addi(itable_entry_addr, itable_entry_addr, itable_offset_search_inc); __ beq(CCR1, throw_icce); __ bne(CCR0, search); // Entry found and itable_entry_addr points to it, get offset of vtable for interface. const Register vtable_offset = R12_scratch2; const Register itable_method = R11_scratch1; const int vtable_offset_offset = (itableOffsetEntry::offset_offset_in_bytes() - itableOffsetEntry::interface_offset_in_bytes()) - itable_offset_search_inc; __ lwz(vtable_offset, vtable_offset_offset, itable_entry_addr); // Compute itableMethodEntry and get method and entry point for compiler. const int method_offset = (itableMethodEntry::size() * wordSize * vtable_index) + itableMethodEntry::method_offset_in_bytes(); __ add(itable_method, rcvr_klass, vtable_offset); __ ld(R19_method, method_offset, itable_method); #ifndef PRODUCT if (DebugVtables) { Label ok; __ cmpd(CCR0, R19_method, 0); __ bne(CCR0, ok); __ stop("method is null", 103); __ bind(ok); } #endif // If the vtable entry is null, the method is abstract. address ame_addr = __ pc(); // ame = abstract method error // Must do an explicit check if implicit checks are disabled. assert(!MacroAssembler::needs_explicit_null_check(in_bytes(Method::from_compiled_offset())), "sanity"); if (!ImplicitNullChecks || !os::zero_page_read_protected()) { if (TrapBasedNullChecks) { __ trap_null_check(R19_method); } else { __ cmpdi(CCR0, R19_method, 0); __ beq(CCR0, throw_icce); } } __ ld(R12_scratch2, in_bytes(Method::from_compiled_offset()), R19_method); __ mtctr(R12_scratch2); __ bctr(); // Handle IncompatibleClassChangeError in itable stubs. // More detailed error message. // We force resolving of the call site by jumping to the "handle // wrong method" stub, and so let the interpreter runtime do all the // dirty work. __ bind(throw_icce); __ load_const(R11_scratch1, SharedRuntime::get_handle_wrong_method_stub()); __ mtctr(R11_scratch1); __ bctr(); masm->flush(); guarantee(__ pc() <= s->code_end(), "overflowed buffer"); s->set_exception_points(npe_addr, ame_addr); return s; } int VtableStub::pd_code_size_limit(bool is_vtable_stub) { if (TraceJumps || DebugVtables || CountCompiledCalls || VerifyOops) { return 1000; } else { int decode_klass_size = MacroAssembler::instr_size_for_decode_klass_not_null(); if (is_vtable_stub) { return 20 + decode_klass_size + 8 + 8; // Plain + cOops + Traps + safety } else { return 96 + decode_klass_size + 12 + 8; // Plain + cOops + Traps + safety } } } int VtableStub::pd_code_alignment() { const unsigned int icache_line_size = 32; return icache_line_size; }