/* * Copyright (C) 2012 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include #include #include "arch/arm/asm_support_arm.h" #include "base/bit_utils.h" #include "entrypoints/entrypoint_utils.h" #include "entrypoints/jni/jni_entrypoints.h" #include "entrypoints/math_entrypoints.h" #include "entrypoints/quick/quick_alloc_entrypoints.h" #include "entrypoints/quick/quick_default_externs.h" #include "entrypoints/quick/quick_default_init_entrypoints.h" #include "entrypoints/quick/quick_entrypoints.h" #include "entrypoints/runtime_asm_entrypoints.h" #include "interpreter/interpreter.h" namespace art { // Cast entrypoints. extern "C" size_t artInstanceOfFromCode(mirror::Object* obj, mirror::Class* ref_class); // Read barrier entrypoints. // art_quick_read_barrier_mark_regX uses an non-standard calling // convention: it expects its input in register X and returns its // result in that same register, and saves and restores all // caller-save registers. extern "C" mirror::Object* art_quick_read_barrier_mark_reg00(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_reg01(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_reg02(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_reg03(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_reg04(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_reg05(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_reg06(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_reg07(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_reg08(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_reg09(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_reg10(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_reg11(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_reg12(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_introspection(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_introspection_narrow(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_introspection_arrays(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_introspection_gc_roots_wide(mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_introspection_gc_roots_narrow( mirror::Object*); extern "C" mirror::Object* art_quick_read_barrier_mark_introspection_intrinsic_cas(mirror::Object*); // Used by soft float. // Single-precision FP arithmetics. extern "C" float fmodf(float a, float b); // REM_FLOAT[_2ADDR] // Double-precision FP arithmetics. extern "C" double fmod(double a, double b); // REM_DOUBLE[_2ADDR] // Used by hard float. extern "C" float art_quick_fmodf(float a, float b); // REM_FLOAT[_2ADDR] extern "C" double art_quick_fmod(double a, double b); // REM_DOUBLE[_2ADDR] // Integer arithmetics. extern "C" int __aeabi_idivmod(int32_t, int32_t); // [DIV|REM]_INT[_2ADDR|_LIT8|_LIT16] // Long long arithmetics - REM_LONG[_2ADDR] and DIV_LONG[_2ADDR] extern "C" int64_t __aeabi_ldivmod(int64_t, int64_t); void UpdateReadBarrierEntrypoints(QuickEntryPoints* qpoints, bool is_active) { qpoints->pReadBarrierMarkReg00 = is_active ? art_quick_read_barrier_mark_reg00 : nullptr; qpoints->pReadBarrierMarkReg01 = is_active ? art_quick_read_barrier_mark_reg01 : nullptr; qpoints->pReadBarrierMarkReg02 = is_active ? art_quick_read_barrier_mark_reg02 : nullptr; qpoints->pReadBarrierMarkReg03 = is_active ? art_quick_read_barrier_mark_reg03 : nullptr; qpoints->pReadBarrierMarkReg04 = is_active ? art_quick_read_barrier_mark_reg04 : nullptr; qpoints->pReadBarrierMarkReg05 = is_active ? art_quick_read_barrier_mark_reg05 : nullptr; qpoints->pReadBarrierMarkReg06 = is_active ? art_quick_read_barrier_mark_reg06 : nullptr; qpoints->pReadBarrierMarkReg07 = is_active ? art_quick_read_barrier_mark_reg07 : nullptr; qpoints->pReadBarrierMarkReg08 = is_active ? art_quick_read_barrier_mark_reg08 : nullptr; qpoints->pReadBarrierMarkReg09 = is_active ? art_quick_read_barrier_mark_reg09 : nullptr; qpoints->pReadBarrierMarkReg10 = is_active ? art_quick_read_barrier_mark_reg10 : nullptr; qpoints->pReadBarrierMarkReg11 = is_active ? art_quick_read_barrier_mark_reg11 : nullptr; if (kUseReadBarrier && kUseBakerReadBarrier) { // For the alignment check, strip the Thumb mode bit. DCHECK_ALIGNED(reinterpret_cast(art_quick_read_barrier_mark_introspection) - 1u, 256u); // Check the field narrow entrypoint offset from the introspection entrypoint. intptr_t narrow_diff = reinterpret_cast(art_quick_read_barrier_mark_introspection_narrow) - reinterpret_cast(art_quick_read_barrier_mark_introspection); DCHECK_EQ(BAKER_MARK_INTROSPECTION_FIELD_LDR_NARROW_ENTRYPOINT_OFFSET, narrow_diff); // Check array switch cases offsets from the introspection entrypoint. intptr_t array_diff = reinterpret_cast(art_quick_read_barrier_mark_introspection_arrays) - reinterpret_cast(art_quick_read_barrier_mark_introspection); DCHECK_EQ(BAKER_MARK_INTROSPECTION_ARRAY_SWITCH_OFFSET, array_diff); // Check the GC root entrypoint offsets from the introspection entrypoint. intptr_t gc_roots_wide_diff = reinterpret_cast(art_quick_read_barrier_mark_introspection_gc_roots_wide) - reinterpret_cast(art_quick_read_barrier_mark_introspection); DCHECK_EQ(BAKER_MARK_INTROSPECTION_GC_ROOT_LDR_WIDE_ENTRYPOINT_OFFSET, gc_roots_wide_diff); intptr_t gc_roots_narrow_diff = reinterpret_cast(art_quick_read_barrier_mark_introspection_gc_roots_narrow) - reinterpret_cast(art_quick_read_barrier_mark_introspection); DCHECK_EQ(BAKER_MARK_INTROSPECTION_GC_ROOT_LDR_NARROW_ENTRYPOINT_OFFSET, gc_roots_narrow_diff); intptr_t intrinsic_cas_diff = reinterpret_cast(art_quick_read_barrier_mark_introspection_intrinsic_cas) - reinterpret_cast(art_quick_read_barrier_mark_introspection); DCHECK_EQ(BAKER_MARK_INTROSPECTION_INTRINSIC_CAS_ENTRYPOINT_OFFSET, intrinsic_cas_diff); // The register 12, i.e. IP, is reserved, so there is no art_quick_read_barrier_mark_reg12. // We're using the entry to hold a pointer to the introspection entrypoint instead. qpoints->pReadBarrierMarkReg12 = is_active ? art_quick_read_barrier_mark_introspection : nullptr; } } void InitEntryPoints(JniEntryPoints* jpoints, QuickEntryPoints* qpoints) { DefaultInitEntryPoints(jpoints, qpoints); // Cast qpoints->pInstanceofNonTrivial = artInstanceOfFromCode; qpoints->pCheckInstanceOf = art_quick_check_instance_of; // Math qpoints->pIdivmod = __aeabi_idivmod; qpoints->pLdiv = __aeabi_ldivmod; qpoints->pLmod = __aeabi_ldivmod; // result returned in r2:r3 qpoints->pLmul = art_quick_mul_long; qpoints->pShlLong = art_quick_shl_long; qpoints->pShrLong = art_quick_shr_long; qpoints->pUshrLong = art_quick_ushr_long; qpoints->pFmod = art_quick_fmod; qpoints->pFmodf = art_quick_fmodf; qpoints->pD2l = art_quick_d2l; qpoints->pF2l = art_quick_f2l; qpoints->pL2f = art_quick_l2f; // More math. qpoints->pCos = cos; qpoints->pSin = sin; qpoints->pAcos = acos; qpoints->pAsin = asin; qpoints->pAtan = atan; qpoints->pAtan2 = atan2; qpoints->pPow = pow; qpoints->pCbrt = cbrt; qpoints->pCosh = cosh; qpoints->pExp = exp; qpoints->pExpm1 = expm1; qpoints->pHypot = hypot; qpoints->pLog = log; qpoints->pLog10 = log10; qpoints->pNextAfter = nextafter; qpoints->pSinh = sinh; qpoints->pTan = tan; qpoints->pTanh = tanh; // Intrinsics qpoints->pIndexOf = art_quick_indexof; // The ARM StringCompareTo intrinsic does not call the runtime. qpoints->pStringCompareTo = nullptr; qpoints->pMemcpy = memcpy; // Read barrier. qpoints->pReadBarrierJni = ReadBarrierJni; UpdateReadBarrierEntrypoints(qpoints, /*is_active=*/ false); qpoints->pReadBarrierMarkReg12 = nullptr; // Cannot use register 12 (IP) to pass arguments. qpoints->pReadBarrierMarkReg13 = nullptr; // Cannot use register 13 (SP) to pass arguments. qpoints->pReadBarrierMarkReg14 = nullptr; // Cannot use register 14 (LR) to pass arguments. qpoints->pReadBarrierMarkReg15 = nullptr; // Cannot use register 15 (PC) to pass arguments. // ARM has only 16 core registers. qpoints->pReadBarrierMarkReg16 = nullptr; qpoints->pReadBarrierMarkReg17 = nullptr; qpoints->pReadBarrierMarkReg18 = nullptr; qpoints->pReadBarrierMarkReg19 = nullptr; qpoints->pReadBarrierMarkReg20 = nullptr; qpoints->pReadBarrierMarkReg21 = nullptr; qpoints->pReadBarrierMarkReg22 = nullptr; qpoints->pReadBarrierMarkReg23 = nullptr; qpoints->pReadBarrierMarkReg24 = nullptr; qpoints->pReadBarrierMarkReg25 = nullptr; qpoints->pReadBarrierMarkReg26 = nullptr; qpoints->pReadBarrierMarkReg27 = nullptr; qpoints->pReadBarrierMarkReg28 = nullptr; qpoints->pReadBarrierMarkReg29 = nullptr; qpoints->pReadBarrierSlow = artReadBarrierSlow; qpoints->pReadBarrierForRootSlow = artReadBarrierForRootSlow; } } // namespace art