199 lines
10 KiB
C++
199 lines
10 KiB
C++
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <math.h>
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#include <string.h>
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#include "arch/arm64/asm_support_arm64.h"
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#include "base/bit_utils.h"
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#include "entrypoints/entrypoint_utils.h"
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#include "entrypoints/jni/jni_entrypoints.h"
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#include "entrypoints/math_entrypoints.h"
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#include "entrypoints/quick/quick_alloc_entrypoints.h"
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#include "entrypoints/quick/quick_default_externs.h"
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#include "entrypoints/quick/quick_default_init_entrypoints.h"
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#include "entrypoints/quick/quick_entrypoints.h"
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#include "entrypoints/runtime_asm_entrypoints.h"
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#include "interpreter/interpreter.h"
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namespace art {
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// Cast entrypoints.
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extern "C" size_t artInstanceOfFromCode(mirror::Object* obj, mirror::Class* ref_class);
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// Read barrier entrypoints.
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// art_quick_read_barrier_mark_regX uses an non-standard calling
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// convention: it expects its input in register X and returns its
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// result in that same register, and saves and restores all
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// caller-save registers.
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg00(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg01(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg02(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg03(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg04(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg05(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg06(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg07(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg08(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg09(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg10(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg11(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg12(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg12(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg13(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg14(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg15(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg16(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg17(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg18(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg19(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg20(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg21(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg22(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg22(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg23(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg24(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg25(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg26(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg27(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg28(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_reg29(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_introspection(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_introspection_arrays(mirror::Object*);
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extern "C" mirror::Object* art_quick_read_barrier_mark_introspection_gc_roots(mirror::Object*);
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void UpdateReadBarrierEntrypoints(QuickEntryPoints* qpoints, bool is_active) {
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// ARM64 is the architecture with the largest number of core
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// registers (32) that supports the read barrier configuration.
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// Because registers 30 (LR) and 31 (SP/XZR) cannot be used to pass
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// arguments, only define ReadBarrierMarkRegX entrypoints for the
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// first 30 registers. This limitation is not a problem on other
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// supported architectures (ARM, x86 and x86-64) either, as they
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// have less core registers (resp. 16, 8 and 16).
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// TODO: ARM/ARM64 now use introspection entrypoints. Consider
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// reducing the number of entrypoints to those needed by x86-64.
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qpoints->SetReadBarrierMarkReg00(is_active ? art_quick_read_barrier_mark_reg00 : nullptr);
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qpoints->SetReadBarrierMarkReg01(is_active ? art_quick_read_barrier_mark_reg01 : nullptr);
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qpoints->SetReadBarrierMarkReg02(is_active ? art_quick_read_barrier_mark_reg02 : nullptr);
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qpoints->SetReadBarrierMarkReg03(is_active ? art_quick_read_barrier_mark_reg03 : nullptr);
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qpoints->SetReadBarrierMarkReg04(is_active ? art_quick_read_barrier_mark_reg04 : nullptr);
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qpoints->SetReadBarrierMarkReg05(is_active ? art_quick_read_barrier_mark_reg05 : nullptr);
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qpoints->SetReadBarrierMarkReg06(is_active ? art_quick_read_barrier_mark_reg06 : nullptr);
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qpoints->SetReadBarrierMarkReg07(is_active ? art_quick_read_barrier_mark_reg07 : nullptr);
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qpoints->SetReadBarrierMarkReg08(is_active ? art_quick_read_barrier_mark_reg08 : nullptr);
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qpoints->SetReadBarrierMarkReg09(is_active ? art_quick_read_barrier_mark_reg09 : nullptr);
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qpoints->SetReadBarrierMarkReg10(is_active ? art_quick_read_barrier_mark_reg10 : nullptr);
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qpoints->SetReadBarrierMarkReg11(is_active ? art_quick_read_barrier_mark_reg11 : nullptr);
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qpoints->SetReadBarrierMarkReg12(is_active ? art_quick_read_barrier_mark_reg12 : nullptr);
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qpoints->SetReadBarrierMarkReg13(is_active ? art_quick_read_barrier_mark_reg13 : nullptr);
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qpoints->SetReadBarrierMarkReg14(is_active ? art_quick_read_barrier_mark_reg14 : nullptr);
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qpoints->SetReadBarrierMarkReg15(is_active ? art_quick_read_barrier_mark_reg15 : nullptr);
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qpoints->SetReadBarrierMarkReg17(is_active ? art_quick_read_barrier_mark_reg17 : nullptr);
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qpoints->SetReadBarrierMarkReg19(is_active ? art_quick_read_barrier_mark_reg19 : nullptr);
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qpoints->SetReadBarrierMarkReg20(is_active ? art_quick_read_barrier_mark_reg20 : nullptr);
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qpoints->SetReadBarrierMarkReg21(is_active ? art_quick_read_barrier_mark_reg21 : nullptr);
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qpoints->SetReadBarrierMarkReg22(is_active ? art_quick_read_barrier_mark_reg22 : nullptr);
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qpoints->SetReadBarrierMarkReg23(is_active ? art_quick_read_barrier_mark_reg23 : nullptr);
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qpoints->SetReadBarrierMarkReg24(is_active ? art_quick_read_barrier_mark_reg24 : nullptr);
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qpoints->SetReadBarrierMarkReg25(is_active ? art_quick_read_barrier_mark_reg25 : nullptr);
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qpoints->SetReadBarrierMarkReg26(is_active ? art_quick_read_barrier_mark_reg26 : nullptr);
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qpoints->SetReadBarrierMarkReg27(is_active ? art_quick_read_barrier_mark_reg27 : nullptr);
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qpoints->SetReadBarrierMarkReg28(is_active ? art_quick_read_barrier_mark_reg28 : nullptr);
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qpoints->SetReadBarrierMarkReg29(is_active ? art_quick_read_barrier_mark_reg29 : nullptr);
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// Check that array switch cases are at appropriate offsets from the introspection entrypoint.
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DCHECK_ALIGNED(art_quick_read_barrier_mark_introspection, 512u);
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intptr_t array_diff =
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reinterpret_cast<intptr_t>(art_quick_read_barrier_mark_introspection_arrays) -
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reinterpret_cast<intptr_t>(art_quick_read_barrier_mark_introspection);
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DCHECK_EQ(BAKER_MARK_INTROSPECTION_ARRAY_SWITCH_OFFSET, array_diff);
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// Check that the GC root entrypoint is at appropriate offset from the introspection entrypoint.
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intptr_t gc_roots_diff =
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reinterpret_cast<intptr_t>(art_quick_read_barrier_mark_introspection_gc_roots) -
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reinterpret_cast<intptr_t>(art_quick_read_barrier_mark_introspection);
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DCHECK_EQ(BAKER_MARK_INTROSPECTION_GC_ROOT_ENTRYPOINT_OFFSET, gc_roots_diff);
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// The register 16, i.e. IP0, is reserved, so there is no art_quick_read_barrier_mark_reg16.
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// We're using the entry to hold a pointer to the introspection entrypoint instead.
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qpoints->SetReadBarrierMarkReg16(is_active ? art_quick_read_barrier_mark_introspection : nullptr);
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}
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void InitEntryPoints(JniEntryPoints* jpoints,
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QuickEntryPoints* qpoints,
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bool monitor_jni_entry_exit) {
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DefaultInitEntryPoints(jpoints, qpoints, monitor_jni_entry_exit);
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// Cast
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qpoints->SetInstanceofNonTrivial(artInstanceOfFromCode);
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qpoints->SetCheckInstanceOf(art_quick_check_instance_of);
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// Math
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// TODO null entrypoints not needed for ARM64 - generate inline.
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qpoints->SetCmpgDouble(nullptr);
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qpoints->SetCmpgFloat(nullptr);
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qpoints->SetCmplDouble(nullptr);
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qpoints->SetCmplFloat(nullptr);
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qpoints->SetFmod(fmod);
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qpoints->SetL2d(nullptr);
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qpoints->SetFmodf(fmodf);
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qpoints->SetL2f(nullptr);
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qpoints->SetD2iz(nullptr);
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qpoints->SetF2iz(nullptr);
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qpoints->SetIdivmod(nullptr);
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qpoints->SetD2l(nullptr);
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qpoints->SetF2l(nullptr);
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qpoints->SetLdiv(nullptr);
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qpoints->SetLmod(nullptr);
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qpoints->SetLmul(nullptr);
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qpoints->SetShlLong(nullptr);
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qpoints->SetShrLong(nullptr);
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qpoints->SetUshrLong(nullptr);
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// More math.
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qpoints->SetCos(cos);
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qpoints->SetSin(sin);
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qpoints->SetAcos(acos);
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qpoints->SetAsin(asin);
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qpoints->SetAtan(atan);
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qpoints->SetAtan2(atan2);
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qpoints->SetPow(pow);
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qpoints->SetCbrt(cbrt);
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qpoints->SetCosh(cosh);
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qpoints->SetExp(exp);
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qpoints->SetExpm1(expm1);
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qpoints->SetHypot(hypot);
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qpoints->SetLog(log);
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qpoints->SetLog10(log10);
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qpoints->SetNextAfter(nextafter);
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qpoints->SetSinh(sinh);
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qpoints->SetTan(tan);
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qpoints->SetTanh(tanh);
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// Intrinsics
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qpoints->SetIndexOf(art_quick_indexof);
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// The ARM64 StringCompareTo intrinsic does not call the runtime.
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qpoints->SetStringCompareTo(nullptr);
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qpoints->SetMemcpy(memcpy);
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// Read barrier.
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qpoints->SetReadBarrierMarkReg16(nullptr); // IP0 is used as a temp by the asm stub.
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UpdateReadBarrierEntrypoints(qpoints, /*is_active=*/ false);
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qpoints->SetReadBarrierSlow(artReadBarrierSlow);
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qpoints->SetReadBarrierForRootSlow(artReadBarrierForRootSlow);
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}
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} // namespace art
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