// modified significantly by Google Inc.
// Copyright 2012 the V8 project authors. All rights reserved.
-#include "v8.h"
+#include "src/v8.h"
#if V8_TARGET_ARCH_ARM
-#include "arm/assembler-arm-inl.h"
-#include "macro-assembler.h"
-#include "serialize.h"
+#include "src/arm/assembler-arm-inl.h"
+#include "src/base/bits.h"
+#include "src/base/cpu.h"
+#include "src/macro-assembler.h"
+#include "src/serialize.h"
namespace v8 {
namespace internal {
-#ifdef DEBUG
-bool CpuFeatures::initialized_ = false;
-#endif
-unsigned CpuFeatures::supported_ = 0;
-unsigned CpuFeatures::found_by_runtime_probing_only_ = 0;
-unsigned CpuFeatures::cross_compile_ = 0;
-unsigned CpuFeatures::cache_line_size_ = 64;
-
-
-ExternalReference ExternalReference::cpu_features() {
- ASSERT(CpuFeatures::initialized_);
- return ExternalReference(&CpuFeatures::supported_);
-}
-
-
// Get the CPU features enabled by the build. For cross compilation the
// preprocessor symbols CAN_USE_ARMV7_INSTRUCTIONS and CAN_USE_VFP3_INSTRUCTIONS
// can be defined to enable ARMv7 and VFPv3 instructions when building the
static unsigned CpuFeaturesImpliedByCompiler() {
unsigned answer = 0;
#ifdef CAN_USE_ARMV7_INSTRUCTIONS
- if (FLAG_enable_armv7) {
- answer |= 1u << ARMv7;
- }
+ if (FLAG_enable_armv7) answer |= 1u << ARMv7;
#endif // CAN_USE_ARMV7_INSTRUCTIONS
#ifdef CAN_USE_VFP3_INSTRUCTIONS
- if (FLAG_enable_vfp3) {
- answer |= 1u << VFP3 | 1u << ARMv7;
- }
+ if (FLAG_enable_vfp3) answer |= 1u << VFP3 | 1u << ARMv7;
#endif // CAN_USE_VFP3_INSTRUCTIONS
#ifdef CAN_USE_VFP32DREGS
- if (FLAG_enable_32dregs) {
- answer |= 1u << VFP32DREGS;
- }
+ if (FLAG_enable_32dregs) answer |= 1u << VFP32DREGS;
+#endif // CAN_USE_VFP32DREGS
+#ifdef CAN_USE_NEON
+ if (FLAG_enable_neon) answer |= 1u << NEON;
#endif // CAN_USE_VFP32DREGS
if ((answer & (1u << ARMv7)) && FLAG_enable_unaligned_accesses) {
answer |= 1u << UNALIGNED_ACCESSES;
}
-const char* DwVfpRegister::AllocationIndexToString(int index) {
- ASSERT(index >= 0 && index < NumAllocatableRegisters());
- ASSERT(kScratchDoubleReg.code() - kDoubleRegZero.code() ==
- kNumReservedRegisters - 1);
- if (index >= kDoubleRegZero.code())
- index += kNumReservedRegisters;
-
- return VFPRegisters::Name(index, true);
-}
-
+void CpuFeatures::ProbeImpl(bool cross_compile) {
+ supported_ |= CpuFeaturesImpliedByCompiler();
+ cache_line_size_ = 64;
-void CpuFeatures::Probe() {
- uint64_t standard_features = static_cast<unsigned>(
- OS::CpuFeaturesImpliedByPlatform()) | CpuFeaturesImpliedByCompiler();
- ASSERT(supported_ == 0 || supported_ == standard_features);
-#ifdef DEBUG
- initialized_ = true;
-#endif
-
- // Get the features implied by the OS and the compiler settings. This is the
- // minimal set of features which is also alowed for generated code in the
- // snapshot.
- supported_ |= standard_features;
-
- if (Serializer::enabled()) {
- // No probing for features if we might serialize (generate snapshot).
- printf(" ");
- PrintFeatures();
- return;
- }
+ // Only use statically determined features for cross compile (snapshot).
+ if (cross_compile) return;
#ifndef __arm__
- // For the simulator=arm build, use VFP when FLAG_enable_vfp3 is
- // enabled. VFPv3 implies ARMv7, see ARM DDI 0406B, page A1-6.
- if (FLAG_enable_vfp3) {
- supported_ |=
- static_cast<uint64_t>(1) << VFP3 |
- static_cast<uint64_t>(1) << ARMv7;
- }
- if (FLAG_enable_neon) {
- supported_ |= 1u << NEON;
- }
- // For the simulator=arm build, use ARMv7 when FLAG_enable_armv7 is enabled
+ // For the simulator build, use whatever the flags specify.
if (FLAG_enable_armv7) {
- supported_ |= static_cast<uint64_t>(1) << ARMv7;
- }
-
- if (FLAG_enable_sudiv) {
- supported_ |= static_cast<uint64_t>(1) << SUDIV;
- }
-
- if (FLAG_enable_movw_movt) {
- supported_ |= static_cast<uint64_t>(1) << MOVW_MOVT_IMMEDIATE_LOADS;
- }
-
- if (FLAG_enable_32dregs) {
- supported_ |= static_cast<uint64_t>(1) << VFP32DREGS;
- }
-
- if (FLAG_enable_unaligned_accesses) {
- supported_ |= static_cast<uint64_t>(1) << UNALIGNED_ACCESSES;
+ supported_ |= 1u << ARMv7;
+ if (FLAG_enable_vfp3) supported_ |= 1u << VFP3;
+ if (FLAG_enable_neon) supported_ |= 1u << NEON | 1u << VFP32DREGS;
+ if (FLAG_enable_sudiv) supported_ |= 1u << SUDIV;
+ if (FLAG_enable_movw_movt) supported_ |= 1u << MOVW_MOVT_IMMEDIATE_LOADS;
+ if (FLAG_enable_32dregs) supported_ |= 1u << VFP32DREGS;
}
+ if (FLAG_enable_mls) supported_ |= 1u << MLS;
+ if (FLAG_enable_unaligned_accesses) supported_ |= 1u << UNALIGNED_ACCESSES;
#else // __arm__
- // Probe for additional features not already known to be available.
- CPU cpu;
- if (!IsSupported(VFP3) && FLAG_enable_vfp3 && cpu.has_vfp3()) {
+ // Probe for additional features at runtime.
+ base::CPU cpu;
+ if (FLAG_enable_vfp3 && cpu.has_vfp3()) {
// This implementation also sets the VFP flags if runtime
// detection of VFP returns true. VFPv3 implies ARMv7, see ARM DDI
// 0406B, page A1-6.
- found_by_runtime_probing_only_ |=
- static_cast<uint64_t>(1) << VFP3 |
- static_cast<uint64_t>(1) << ARMv7;
+ supported_ |= 1u << VFP3 | 1u << ARMv7;
}
- if (!IsSupported(NEON) && FLAG_enable_neon && cpu.has_neon()) {
- found_by_runtime_probing_only_ |= 1u << NEON;
- }
+ if (FLAG_enable_neon && cpu.has_neon()) supported_ |= 1u << NEON;
+ if (FLAG_enable_sudiv && cpu.has_idiva()) supported_ |= 1u << SUDIV;
+ if (FLAG_enable_mls && cpu.has_thumb2()) supported_ |= 1u << MLS;
- if (!IsSupported(ARMv7) && FLAG_enable_armv7 && cpu.architecture() >= 7) {
- found_by_runtime_probing_only_ |= static_cast<uint64_t>(1) << ARMv7;
- }
-
- if (!IsSupported(SUDIV) && FLAG_enable_sudiv && cpu.has_idiva()) {
- found_by_runtime_probing_only_ |= static_cast<uint64_t>(1) << SUDIV;
- }
-
- if (!IsSupported(UNALIGNED_ACCESSES) && FLAG_enable_unaligned_accesses
- && cpu.architecture() >= 7) {
- found_by_runtime_probing_only_ |=
- static_cast<uint64_t>(1) << UNALIGNED_ACCESSES;
- }
-
- // Use movw/movt for QUALCOMM ARMv7 cores.
- if (cpu.implementer() == CPU::QUALCOMM &&
- cpu.architecture() >= 7 &&
- FLAG_enable_movw_movt) {
- found_by_runtime_probing_only_ |=
- static_cast<uint64_t>(1) << MOVW_MOVT_IMMEDIATE_LOADS;
+ if (cpu.architecture() >= 7) {
+ if (FLAG_enable_armv7) supported_ |= 1u << ARMv7;
+ if (FLAG_enable_unaligned_accesses) supported_ |= 1u << UNALIGNED_ACCESSES;
+ // Use movw/movt for QUALCOMM ARMv7 cores.
+ if (FLAG_enable_movw_movt && cpu.implementer() == base::CPU::QUALCOMM) {
+ supported_ |= 1u << MOVW_MOVT_IMMEDIATE_LOADS;
+ }
}
// ARM Cortex-A9 and Cortex-A5 have 32 byte cachelines.
- if (cpu.implementer() == CPU::ARM &&
- (cpu.part() == CPU::ARM_CORTEX_A5 ||
- cpu.part() == CPU::ARM_CORTEX_A9)) {
+ if (cpu.implementer() == base::CPU::ARM &&
+ (cpu.part() == base::CPU::ARM_CORTEX_A5 ||
+ cpu.part() == base::CPU::ARM_CORTEX_A9)) {
cache_line_size_ = 32;
}
- if (!IsSupported(VFP32DREGS) && FLAG_enable_32dregs && cpu.has_vfp3_d32()) {
- found_by_runtime_probing_only_ |= static_cast<uint64_t>(1) << VFP32DREGS;
- }
-
- supported_ |= found_by_runtime_probing_only_;
+ if (FLAG_enable_32dregs && cpu.has_vfp3_d32()) supported_ |= 1u << VFP32DREGS;
#endif
- // Assert that VFP3 implies ARMv7.
- ASSERT(!IsSupported(VFP3) || IsSupported(ARMv7));
+ DCHECK(!IsSupported(VFP3) || IsSupported(ARMv7));
}
void CpuFeatures::PrintTarget() {
const char* arm_arch = NULL;
- const char* arm_test = "";
+ const char* arm_target_type = "";
+ const char* arm_no_probe = "";
const char* arm_fpu = "";
const char* arm_thumb = "";
const char* arm_float_abi = NULL;
+#if !defined __arm__
+ arm_target_type = " simulator";
+#endif
+
+#if defined ARM_TEST_NO_FEATURE_PROBE
+ arm_no_probe = " noprobe";
+#endif
+
#if defined CAN_USE_ARMV7_INSTRUCTIONS
arm_arch = "arm v7";
#else
arm_arch = "arm v6";
#endif
-#ifdef __arm__
-
-# ifdef ARM_TEST
- arm_test = " test";
-# endif
-# if defined __ARM_NEON__
+#if defined CAN_USE_NEON
arm_fpu = " neon";
-# elif defined CAN_USE_VFP3_INSTRUCTIONS
- arm_fpu = " vfp3";
-# else
- arm_fpu = " vfp2";
-# endif
-# if (defined __thumb__) || (defined __thumb2__)
- arm_thumb = " thumb";
-# endif
- arm_float_abi = OS::ArmUsingHardFloat() ? "hard" : "softfp";
-
-#else // __arm__
-
- arm_test = " simulator";
-# if defined CAN_USE_VFP3_INSTRUCTIONS
+#elif defined CAN_USE_VFP3_INSTRUCTIONS
# if defined CAN_USE_VFP32DREGS
arm_fpu = " vfp3";
# else
arm_fpu = " vfp3-d16";
# endif
-# else
+#else
arm_fpu = " vfp2";
-# endif
-# if USE_EABI_HARDFLOAT == 1
+#endif
+
+#ifdef __arm__
+ arm_float_abi = base::OS::ArmUsingHardFloat() ? "hard" : "softfp";
+#elif USE_EABI_HARDFLOAT
arm_float_abi = "hard";
-# else
+#else
arm_float_abi = "softfp";
-# endif
+#endif
-#endif // __arm__
+#if defined __arm__ && (defined __thumb__) || (defined __thumb2__)
+ arm_thumb = " thumb";
+#endif
- printf("target%s %s%s%s %s\n",
- arm_test, arm_arch, arm_fpu, arm_thumb, arm_float_abi);
+ printf("target%s%s %s%s%s %s\n",
+ arm_target_type, arm_no_probe, arm_arch, arm_fpu, arm_thumb,
+ arm_float_abi);
}
CpuFeatures::IsSupported(UNALIGNED_ACCESSES),
CpuFeatures::IsSupported(MOVW_MOVT_IMMEDIATE_LOADS));
#ifdef __arm__
- bool eabi_hardfloat = OS::ArmUsingHardFloat();
+ bool eabi_hardfloat = base::OS::ArmUsingHardFloat();
#elif USE_EABI_HARDFLOAT
bool eabi_hardfloat = true;
#else
// -----------------------------------------------------------------------------
+// Implementation of DwVfpRegister
+
+const char* DwVfpRegister::AllocationIndexToString(int index) {
+ DCHECK(index >= 0 && index < NumAllocatableRegisters());
+ DCHECK(kScratchDoubleReg.code() - kDoubleRegZero.code() ==
+ kNumReservedRegisters - 1);
+ if (index >= kDoubleRegZero.code()) index += kNumReservedRegisters;
+ return VFPRegisters::Name(index, true);
+}
+
+
+// -----------------------------------------------------------------------------
// Implementation of RelocInfo
const int RelocInfo::kApplyMask = 0;
bool RelocInfo::IsInConstantPool() {
- if (FLAG_enable_ool_constant_pool) {
- return Assembler::IsLdrPpImmediateOffset(Memory::int32_at(pc_));
- } else {
- return Assembler::IsLdrPcImmediateOffset(Memory::int32_at(pc_));
- }
+ return Assembler::is_constant_pool_load(pc_);
}
}
// Indicate that code has changed.
- CPU::FlushICache(pc_, instruction_count * Assembler::kInstrSize);
+ CpuFeatures::FlushICache(pc_, instruction_count * Assembler::kInstrSize);
}
// Verify all Objects referred by code are NOT in new space.
Object* obj = *handle;
if (obj->IsHeapObject()) {
- ASSERT(!HeapObject::cast(obj)->GetHeap()->InNewSpace(obj));
+ DCHECK(!HeapObject::cast(obj)->GetHeap()->InNewSpace(obj));
imm32_ = reinterpret_cast<intptr_t>(handle.location());
rmode_ = RelocInfo::EMBEDDED_OBJECT;
} else {
Operand::Operand(Register rm, ShiftOp shift_op, int shift_imm) {
- ASSERT(is_uint5(shift_imm));
+ DCHECK(is_uint5(shift_imm));
rm_ = rm;
rs_ = no_reg;
shift_op = LSL;
} else if (shift_op == RRX) {
// encoded as ROR with shift_imm == 0
- ASSERT(shift_imm == 0);
+ DCHECK(shift_imm == 0);
shift_op_ = ROR;
shift_imm_ = 0;
}
Operand::Operand(Register rm, ShiftOp shift_op, Register rs) {
- ASSERT(shift_op != RRX);
+ DCHECK(shift_op != RRX);
rm_ = rm;
rs_ = no_reg;
shift_op_ = shift_op;
MemOperand::MemOperand(Register rn, Register rm,
ShiftOp shift_op, int shift_imm, AddrMode am) {
- ASSERT(is_uint5(shift_imm));
+ DCHECK(is_uint5(shift_imm));
rn_ = rn;
rm_ = rm;
shift_op_ = shift_op;
NeonMemOperand::NeonMemOperand(Register rn, AddrMode am, int align) {
- ASSERT((am == Offset) || (am == PostIndex));
+ DCHECK((am == Offset) || (am == PostIndex));
rn_ = rn;
rm_ = (am == Offset) ? pc : sp;
SetAlignment(align);
// -----------------------------------------------------------------------------
// Specific instructions, constants, and masks.
-// add(sp, sp, 4) instruction (aka Pop())
-const Instr kPopInstruction =
- al | PostIndex | 4 | LeaveCC | I | kRegister_sp_Code * B16 |
- kRegister_sp_Code * B12;
// str(r, MemOperand(sp, 4, NegPreIndex), al) instruction (aka push(r))
// register r is not encoded.
const Instr kPushRegPattern =
// register r is not encoded.
const Instr kPopRegPattern =
al | B26 | L | 4 | PostIndex | kRegister_sp_Code * B16;
-// mov lr, pc
-const Instr kMovLrPc = al | MOV | kRegister_pc_Code | kRegister_lr_Code * B12;
// ldr rd, [pc, #offset]
-const Instr kLdrPCMask = 15 * B24 | 7 * B20 | 15 * B16;
-const Instr kLdrPCPattern = 5 * B24 | L | kRegister_pc_Code * B16;
+const Instr kLdrPCImmedMask = 15 * B24 | 7 * B20 | 15 * B16;
+const Instr kLdrPCImmedPattern = 5 * B24 | L | kRegister_pc_Code * B16;
// ldr rd, [pp, #offset]
-const Instr kLdrPpMask = 15 * B24 | 7 * B20 | 15 * B16;
-const Instr kLdrPpPattern = 5 * B24 | L | kRegister_r8_Code * B16;
+const Instr kLdrPpImmedMask = 15 * B24 | 7 * B20 | 15 * B16;
+const Instr kLdrPpImmedPattern = 5 * B24 | L | kRegister_r8_Code * B16;
+// ldr rd, [pp, rn]
+const Instr kLdrPpRegMask = 15 * B24 | 7 * B20 | 15 * B16;
+const Instr kLdrPpRegPattern = 7 * B24 | L | kRegister_r8_Code * B16;
// vldr dd, [pc, #offset]
const Instr kVldrDPCMask = 15 * B24 | 3 * B20 | 15 * B16 | 15 * B8;
const Instr kVldrDPCPattern = 13 * B24 | L | kRegister_pc_Code * B16 | 11 * B8;
const Instr kMovMvnFlip = B22;
const Instr kMovLeaveCCMask = 0xdff * B16;
const Instr kMovLeaveCCPattern = 0x1a0 * B16;
-const Instr kMovwMask = 0xff * B20;
const Instr kMovwPattern = 0x30 * B20;
+const Instr kMovtPattern = 0x34 * B20;
const Instr kMovwLeaveCCFlip = 0x5 * B21;
+const Instr kMovImmedMask = 0x7f * B21;
+const Instr kMovImmedPattern = 0x1d * B21;
+const Instr kOrrImmedMask = 0x7f * B21;
+const Instr kOrrImmedPattern = 0x1c * B21;
const Instr kCmpCmnMask = 0xdd * B20 | 0xf * B12;
const Instr kCmpCmnPattern = 0x15 * B20;
const Instr kCmpCmnFlip = B21;
const Instr kStrRegFpNegOffsetPattern =
al | B26 | NegOffset | kRegister_fp_Code * B16;
const Instr kLdrStrInstrTypeMask = 0xffff0000;
-const Instr kLdrStrInstrArgumentMask = 0x0000ffff;
-const Instr kLdrStrOffsetMask = 0x00000fff;
Assembler::Assembler(Isolate* isolate, void* buffer, int buffer_size)
first_const_pool_64_use_ = -1;
last_bound_pos_ = 0;
constant_pool_available_ = !FLAG_enable_ool_constant_pool;
- constant_pool_full_ = false;
ClearRecordedAstId();
}
Assembler::~Assembler() {
- ASSERT(const_pool_blocked_nesting_ == 0);
+ DCHECK(const_pool_blocked_nesting_ == 0);
}
if (!FLAG_enable_ool_constant_pool) {
// Emit constant pool if necessary.
CheckConstPool(true, false);
- ASSERT(num_pending_32_bit_reloc_info_ == 0);
- ASSERT(num_pending_64_bit_reloc_info_ == 0);
+ DCHECK(num_pending_32_bit_reloc_info_ == 0);
+ DCHECK(num_pending_64_bit_reloc_info_ == 0);
}
// Set up code descriptor.
desc->buffer = buffer_;
void Assembler::Align(int m) {
- ASSERT(m >= 4 && IsPowerOf2(m));
+ DCHECK(m >= 4 && base::bits::IsPowerOfTwo32(m));
while ((pc_offset() & (m - 1)) != 0) {
nop();
}
int Assembler::GetBranchOffset(Instr instr) {
- ASSERT(IsBranch(instr));
+ DCHECK(IsBranch(instr));
// Take the jump offset in the lower 24 bits, sign extend it and multiply it
// with 4 to get the offset in bytes.
return ((instr & kImm24Mask) << 8) >> 6;
int Assembler::GetLdrRegisterImmediateOffset(Instr instr) {
- ASSERT(IsLdrRegisterImmediate(instr));
+ DCHECK(IsLdrRegisterImmediate(instr));
bool positive = (instr & B23) == B23;
int offset = instr & kOff12Mask; // Zero extended offset.
return positive ? offset : -offset;
int Assembler::GetVldrDRegisterImmediateOffset(Instr instr) {
- ASSERT(IsVldrDRegisterImmediate(instr));
+ DCHECK(IsVldrDRegisterImmediate(instr));
bool positive = (instr & B23) == B23;
int offset = instr & kOff8Mask; // Zero extended offset.
offset <<= 2;
Instr Assembler::SetLdrRegisterImmediateOffset(Instr instr, int offset) {
- ASSERT(IsLdrRegisterImmediate(instr));
+ DCHECK(IsLdrRegisterImmediate(instr));
bool positive = offset >= 0;
if (!positive) offset = -offset;
- ASSERT(is_uint12(offset));
+ DCHECK(is_uint12(offset));
// Set bit indicating whether the offset should be added.
instr = (instr & ~B23) | (positive ? B23 : 0);
// Set the actual offset.
Instr Assembler::SetVldrDRegisterImmediateOffset(Instr instr, int offset) {
- ASSERT(IsVldrDRegisterImmediate(instr));
- ASSERT((offset & ~3) == offset); // Must be 64-bit aligned.
+ DCHECK(IsVldrDRegisterImmediate(instr));
+ DCHECK((offset & ~3) == offset); // Must be 64-bit aligned.
bool positive = offset >= 0;
if (!positive) offset = -offset;
- ASSERT(is_uint10(offset));
+ DCHECK(is_uint10(offset));
// Set bit indicating whether the offset should be added.
instr = (instr & ~B23) | (positive ? B23 : 0);
// Set the actual offset. Its bottom 2 bits are zero.
Instr Assembler::SetStrRegisterImmediateOffset(Instr instr, int offset) {
- ASSERT(IsStrRegisterImmediate(instr));
+ DCHECK(IsStrRegisterImmediate(instr));
bool positive = offset >= 0;
if (!positive) offset = -offset;
- ASSERT(is_uint12(offset));
+ DCHECK(is_uint12(offset));
// Set bit indicating whether the offset should be added.
instr = (instr & ~B23) | (positive ? B23 : 0);
// Set the actual offset.
Instr Assembler::SetAddRegisterImmediateOffset(Instr instr, int offset) {
- ASSERT(IsAddRegisterImmediate(instr));
- ASSERT(offset >= 0);
- ASSERT(is_uint12(offset));
+ DCHECK(IsAddRegisterImmediate(instr));
+ DCHECK(offset >= 0);
+ DCHECK(is_uint12(offset));
// Set the offset.
return (instr & ~kOff12Mask) | offset;
}
}
+Instr Assembler::GetConsantPoolLoadPattern() {
+ if (FLAG_enable_ool_constant_pool) {
+ return kLdrPpImmedPattern;
+ } else {
+ return kLdrPCImmedPattern;
+ }
+}
+
+
+Instr Assembler::GetConsantPoolLoadMask() {
+ if (FLAG_enable_ool_constant_pool) {
+ return kLdrPpImmedMask;
+ } else {
+ return kLdrPCImmedMask;
+ }
+}
+
+
bool Assembler::IsPush(Instr instr) {
return ((instr & ~kRdMask) == kPushRegPattern);
}
bool Assembler::IsLdrPcImmediateOffset(Instr instr) {
// Check the instruction is indeed a
// ldr<cond> <Rd>, [pc +/- offset_12].
- return (instr & kLdrPCMask) == kLdrPCPattern;
+ return (instr & kLdrPCImmedMask) == kLdrPCImmedPattern;
}
bool Assembler::IsLdrPpImmediateOffset(Instr instr) {
// Check the instruction is indeed a
// ldr<cond> <Rd>, [pp +/- offset_12].
- return (instr & kLdrPpMask) == kLdrPpPattern;
+ return (instr & kLdrPpImmedMask) == kLdrPpImmedPattern;
+}
+
+
+bool Assembler::IsLdrPpRegOffset(Instr instr) {
+ // Check the instruction is indeed a
+ // ldr<cond> <Rd>, [pp, +/- <Rm>].
+ return (instr & kLdrPpRegMask) == kLdrPpRegPattern;
}
+Instr Assembler::GetLdrPpRegOffsetPattern() { return kLdrPpRegPattern; }
+
+
bool Assembler::IsVldrDPcImmediateOffset(Instr instr) {
// Check the instruction is indeed a
// vldr<cond> <Dd>, [pc +/- offset_10].
}
+bool Assembler::IsBlxReg(Instr instr) {
+ // Check the instruction is indeed a
+ // blxcc <Rm>
+ return (instr & kBlxRegMask) == kBlxRegPattern;
+}
+
+
+bool Assembler::IsBlxIp(Instr instr) {
+ // Check the instruction is indeed a
+ // blx ip
+ return instr == kBlxIp;
+}
+
+
bool Assembler::IsTstImmediate(Instr instr) {
return (instr & (B27 | B26 | I | kOpCodeMask | S | kRdMask)) ==
(I | TST | S);
Register Assembler::GetCmpImmediateRegister(Instr instr) {
- ASSERT(IsCmpImmediate(instr));
+ DCHECK(IsCmpImmediate(instr));
return GetRn(instr);
}
int Assembler::GetCmpImmediateRawImmediate(Instr instr) {
- ASSERT(IsCmpImmediate(instr));
+ DCHECK(IsCmpImmediate(instr));
return instr & kOff12Mask;
}
// same position.
-int Assembler::target_at(int pos) {
+int Assembler::target_at(int pos) {
Instr instr = instr_at(pos);
if (is_uint24(instr)) {
// Emitted link to a label, not part of a branch.
return instr;
}
- ASSERT((instr & 7*B25) == 5*B25); // b, bl, or blx imm24
+ DCHECK((instr & 7*B25) == 5*B25); // b, bl, or blx imm24
int imm26 = ((instr & kImm24Mask) << 8) >> 6;
if ((Instruction::ConditionField(instr) == kSpecialCondition) &&
((instr & B24) != 0)) {
void Assembler::target_at_put(int pos, int target_pos) {
Instr instr = instr_at(pos);
if (is_uint24(instr)) {
- ASSERT(target_pos == pos || target_pos >= 0);
+ DCHECK(target_pos == pos || target_pos >= 0);
// Emitted link to a label, not part of a branch.
// Load the position of the label relative to the generated code object
// pointer in a register.
// We extract the destination register from the emitted nop instruction.
Register dst = Register::from_code(
Instruction::RmValue(instr_at(pos + kInstrSize)));
- ASSERT(IsNop(instr_at(pos + kInstrSize), dst.code()));
+ DCHECK(IsNop(instr_at(pos + kInstrSize), dst.code()));
uint32_t target24 = target_pos + (Code::kHeaderSize - kHeapObjectTag);
- ASSERT(is_uint24(target24));
+ DCHECK(is_uint24(target24));
if (is_uint8(target24)) {
// If the target fits in a byte then only patch with a mov
// instruction.
return;
}
int imm26 = target_pos - (pos + kPcLoadDelta);
- ASSERT((instr & 7*B25) == 5*B25); // b, bl, or blx imm24
+ DCHECK((instr & 7*B25) == 5*B25); // b, bl, or blx imm24
if (Instruction::ConditionField(instr) == kSpecialCondition) {
// blx uses bit 24 to encode bit 2 of imm26
- ASSERT((imm26 & 1) == 0);
+ DCHECK((imm26 & 1) == 0);
instr = (instr & ~(B24 | kImm24Mask)) | ((imm26 & 2) >> 1)*B24;
} else {
- ASSERT((imm26 & 3) == 0);
+ DCHECK((imm26 & 3) == 0);
instr &= ~kImm24Mask;
}
int imm24 = imm26 >> 2;
- ASSERT(is_int24(imm24));
+ DCHECK(is_int24(imm24));
instr_at_put(pos, instr | (imm24 & kImm24Mask));
}
if ((instr & ~kImm24Mask) == 0) {
PrintF("value\n");
} else {
- ASSERT((instr & 7*B25) == 5*B25); // b, bl, or blx
+ DCHECK((instr & 7*B25) == 5*B25); // b, bl, or blx
Condition cond = Instruction::ConditionField(instr);
const char* b;
const char* c;
void Assembler::bind_to(Label* L, int pos) {
- ASSERT(0 <= pos && pos <= pc_offset()); // must have a valid binding position
+ DCHECK(0 <= pos && pos <= pc_offset()); // must have a valid binding position
while (L->is_linked()) {
int fixup_pos = L->pos();
next(L); // call next before overwriting link with target at fixup_pos
void Assembler::bind(Label* L) {
- ASSERT(!L->is_bound()); // label can only be bound once
+ DCHECK(!L->is_bound()); // label can only be bound once
bind_to(L, pc_offset());
}
void Assembler::next(Label* L) {
- ASSERT(L->is_linked());
+ DCHECK(L->is_linked());
int link = target_at(L->pos());
if (link == L->pos()) {
// Branch target points to the same instuction. This is the end of the link
// chain.
L->Unuse();
} else {
- ASSERT(link >= 0);
+ DCHECK(link >= 0);
L->link_to(link);
}
}
if (CpuFeatures::IsSupported(ARMv7)) {
if (imm32 < 0x10000) {
*instr ^= kMovwLeaveCCFlip;
- *instr |= EncodeMovwImmediate(imm32);
+ *instr |= Assembler::EncodeMovwImmediate(imm32);
*rotate_imm = *immed_8 = 0; // Not used for movw.
return true;
}
// encoded.
bool Operand::must_output_reloc_info(const Assembler* assembler) const {
if (rmode_ == RelocInfo::EXTERNAL_REFERENCE) {
-#ifdef DEBUG
- if (!Serializer::enabled()) {
- Serializer::TooLateToEnableNow();
- }
-#endif // def DEBUG
if (assembler != NULL && assembler->predictable_code_size()) return true;
- return Serializer::enabled();
+ return assembler->serializer_enabled();
} else if (RelocInfo::IsNone(rmode_)) {
return false;
}
static bool use_mov_immediate_load(const Operand& x,
const Assembler* assembler) {
- if (assembler != NULL && !assembler->can_use_constant_pool()) {
- // If there is no constant pool available, we must use an mov immediate.
- // TODO(rmcilroy): enable ARMv6 support.
- ASSERT(CpuFeatures::IsSupported(ARMv7));
+ if (assembler != NULL && !assembler->is_constant_pool_available()) {
return true;
} else if (CpuFeatures::IsSupported(MOVW_MOVT_IMMEDIATE_LOADS) &&
(assembler == NULL || !assembler->predictable_code_size())) {
}
-bool Operand::is_single_instruction(const Assembler* assembler,
- Instr instr) const {
- if (rm_.is_valid()) return true;
+int Operand::instructions_required(const Assembler* assembler,
+ Instr instr) const {
+ if (rm_.is_valid()) return 1;
uint32_t dummy1, dummy2;
if (must_output_reloc_info(assembler) ||
!fits_shifter(imm32_, &dummy1, &dummy2, &instr)) {
// The immediate operand cannot be encoded as a shifter operand, or use of
- // constant pool is required. For a mov instruction not setting the
- // condition code additional instruction conventions can be used.
- if ((instr & ~kCondMask) == 13*B21) { // mov, S not set
- return !use_mov_immediate_load(*this, assembler);
+ // constant pool is required. First account for the instructions required
+ // for the constant pool or immediate load
+ int instructions;
+ if (use_mov_immediate_load(*this, assembler)) {
+ // A movw / movt or mov / orr immediate load.
+ instructions = CpuFeatures::IsSupported(ARMv7) ? 2 : 4;
+ } else if (assembler != NULL && assembler->use_extended_constant_pool()) {
+ // An extended constant pool load.
+ instructions = CpuFeatures::IsSupported(ARMv7) ? 3 : 5;
} else {
- // If this is not a mov or mvn instruction there will always an additional
- // instructions - either mov or ldr. The mov might actually be two
- // instructions mov or movw followed by movt so including the actual
- // instruction two or three instructions will be generated.
- return false;
+ // A small constant pool load.
+ instructions = 1;
+ }
+
+ if ((instr & ~kCondMask) != 13 * B21) { // mov, S not set
+ // For a mov or mvn instruction which doesn't set the condition
+ // code, the constant pool or immediate load is enough, otherwise we need
+ // to account for the actual instruction being requested.
+ instructions += 1;
}
+ return instructions;
} else {
// No use of constant pool and the immediate operand can be encoded as a
// shifter operand.
- return true;
+ return 1;
}
}
const Operand& x,
Condition cond) {
RelocInfo rinfo(pc_, x.rmode_, x.imm32_, NULL);
+ uint32_t imm32 = static_cast<uint32_t>(x.imm32_);
if (x.must_output_reloc_info(this)) {
RecordRelocInfo(rinfo);
}
if (use_mov_immediate_load(x, this)) {
Register target = rd.code() == pc.code() ? ip : rd;
- // TODO(rmcilroy): add ARMv6 support for immediate loads.
- ASSERT(CpuFeatures::IsSupported(ARMv7));
- if (!FLAG_enable_ool_constant_pool && x.must_output_reloc_info(this)) {
- // Make sure the movw/movt doesn't get separated.
- BlockConstPoolFor(2);
+ if (CpuFeatures::IsSupported(ARMv7)) {
+ if (!FLAG_enable_ool_constant_pool && x.must_output_reloc_info(this)) {
+ // Make sure the movw/movt doesn't get separated.
+ BlockConstPoolFor(2);
+ }
+ movw(target, imm32 & 0xffff, cond);
+ movt(target, imm32 >> 16, cond);
+ } else {
+ DCHECK(FLAG_enable_ool_constant_pool);
+ mov(target, Operand(imm32 & kImm8Mask), LeaveCC, cond);
+ orr(target, target, Operand(imm32 & (kImm8Mask << 8)), LeaveCC, cond);
+ orr(target, target, Operand(imm32 & (kImm8Mask << 16)), LeaveCC, cond);
+ orr(target, target, Operand(imm32 & (kImm8Mask << 24)), LeaveCC, cond);
}
- emit(cond | 0x30*B20 | target.code()*B12 |
- EncodeMovwImmediate(x.imm32_ & 0xffff));
- movt(target, static_cast<uint32_t>(x.imm32_) >> 16, cond);
if (target.code() != rd.code()) {
mov(rd, target, LeaveCC, cond);
}
} else {
- ASSERT(can_use_constant_pool());
- ConstantPoolAddEntry(rinfo);
- ldr(rd, MemOperand(FLAG_enable_ool_constant_pool ? pp : pc, 0), cond);
+ DCHECK(is_constant_pool_available());
+ ConstantPoolArray::LayoutSection section = ConstantPoolAddEntry(rinfo);
+ if (section == ConstantPoolArray::EXTENDED_SECTION) {
+ DCHECK(FLAG_enable_ool_constant_pool);
+ Register target = rd.code() == pc.code() ? ip : rd;
+ // Emit instructions to load constant pool offset.
+ if (CpuFeatures::IsSupported(ARMv7)) {
+ movw(target, 0, cond);
+ movt(target, 0, cond);
+ } else {
+ mov(target, Operand(0), LeaveCC, cond);
+ orr(target, target, Operand(0), LeaveCC, cond);
+ orr(target, target, Operand(0), LeaveCC, cond);
+ orr(target, target, Operand(0), LeaveCC, cond);
+ }
+ // Load from constant pool at offset.
+ ldr(rd, MemOperand(pp, target), cond);
+ } else {
+ DCHECK(section == ConstantPoolArray::SMALL_SECTION);
+ ldr(rd, MemOperand(FLAG_enable_ool_constant_pool ? pp : pc, 0), cond);
+ }
}
}
Register rd,
const Operand& x) {
CheckBuffer();
- ASSERT((instr & ~(kCondMask | kOpCodeMask | S)) == 0);
+ DCHECK((instr & ~(kCondMask | kOpCodeMask | S)) == 0);
if (!x.rm_.is_valid()) {
// Immediate.
uint32_t rotate_imm;
instr |= x.shift_imm_*B7 | x.shift_op_ | x.rm_.code();
} else {
// Register shift.
- ASSERT(!rn.is(pc) && !rd.is(pc) && !x.rm_.is(pc) && !x.rs_.is(pc));
+ DCHECK(!rn.is(pc) && !rd.is(pc) && !x.rm_.is(pc) && !x.rs_.is(pc));
instr |= x.rs_.code()*B8 | x.shift_op_ | B4 | x.rm_.code();
}
emit(instr | rn.code()*B16 | rd.code()*B12);
void Assembler::addrmod2(Instr instr, Register rd, const MemOperand& x) {
- ASSERT((instr & ~(kCondMask | B | L)) == B26);
+ DCHECK((instr & ~(kCondMask | B | L)) == B26);
int am = x.am_;
if (!x.rm_.is_valid()) {
// Immediate offset.
if (!is_uint12(offset_12)) {
// Immediate offset cannot be encoded, load it first to register ip
// rn (and rd in a load) should never be ip, or will be trashed.
- ASSERT(!x.rn_.is(ip) && ((instr & L) == L || !rd.is(ip)));
+ DCHECK(!x.rn_.is(ip) && ((instr & L) == L || !rd.is(ip)));
mov(ip, Operand(x.offset_), LeaveCC, Instruction::ConditionField(instr));
addrmod2(instr, rd, MemOperand(x.rn_, ip, x.am_));
return;
}
- ASSERT(offset_12 >= 0); // no masking needed
+ DCHECK(offset_12 >= 0); // no masking needed
instr |= offset_12;
} else {
// Register offset (shift_imm_ and shift_op_ are 0) or scaled
// register offset the constructors make sure than both shift_imm_
// and shift_op_ are initialized.
- ASSERT(!x.rm_.is(pc));
+ DCHECK(!x.rm_.is(pc));
instr |= B25 | x.shift_imm_*B7 | x.shift_op_ | x.rm_.code();
}
- ASSERT((am & (P|W)) == P || !x.rn_.is(pc)); // no pc base with writeback
+ DCHECK((am & (P|W)) == P || !x.rn_.is(pc)); // no pc base with writeback
emit(instr | am | x.rn_.code()*B16 | rd.code()*B12);
}
void Assembler::addrmod3(Instr instr, Register rd, const MemOperand& x) {
- ASSERT((instr & ~(kCondMask | L | S6 | H)) == (B4 | B7));
- ASSERT(x.rn_.is_valid());
+ DCHECK((instr & ~(kCondMask | L | S6 | H)) == (B4 | B7));
+ DCHECK(x.rn_.is_valid());
int am = x.am_;
if (!x.rm_.is_valid()) {
// Immediate offset.
if (!is_uint8(offset_8)) {
// Immediate offset cannot be encoded, load it first to register ip
// rn (and rd in a load) should never be ip, or will be trashed.
- ASSERT(!x.rn_.is(ip) && ((instr & L) == L || !rd.is(ip)));
+ DCHECK(!x.rn_.is(ip) && ((instr & L) == L || !rd.is(ip)));
mov(ip, Operand(x.offset_), LeaveCC, Instruction::ConditionField(instr));
addrmod3(instr, rd, MemOperand(x.rn_, ip, x.am_));
return;
}
- ASSERT(offset_8 >= 0); // no masking needed
+ DCHECK(offset_8 >= 0); // no masking needed
instr |= B | (offset_8 >> 4)*B8 | (offset_8 & 0xf);
} else if (x.shift_imm_ != 0) {
// Scaled register offset not supported, load index first
// rn (and rd in a load) should never be ip, or will be trashed.
- ASSERT(!x.rn_.is(ip) && ((instr & L) == L || !rd.is(ip)));
+ DCHECK(!x.rn_.is(ip) && ((instr & L) == L || !rd.is(ip)));
mov(ip, Operand(x.rm_, x.shift_op_, x.shift_imm_), LeaveCC,
Instruction::ConditionField(instr));
addrmod3(instr, rd, MemOperand(x.rn_, ip, x.am_));
return;
} else {
// Register offset.
- ASSERT((am & (P|W)) == P || !x.rm_.is(pc)); // no pc index with writeback
+ DCHECK((am & (P|W)) == P || !x.rm_.is(pc)); // no pc index with writeback
instr |= x.rm_.code();
}
- ASSERT((am & (P|W)) == P || !x.rn_.is(pc)); // no pc base with writeback
+ DCHECK((am & (P|W)) == P || !x.rn_.is(pc)); // no pc base with writeback
emit(instr | am | x.rn_.code()*B16 | rd.code()*B12);
}
void Assembler::addrmod4(Instr instr, Register rn, RegList rl) {
- ASSERT((instr & ~(kCondMask | P | U | W | L)) == B27);
- ASSERT(rl != 0);
- ASSERT(!rn.is(pc));
+ DCHECK((instr & ~(kCondMask | P | U | W | L)) == B27);
+ DCHECK(rl != 0);
+ DCHECK(!rn.is(pc));
emit(instr | rn.code()*B16 | rl);
}
void Assembler::addrmod5(Instr instr, CRegister crd, const MemOperand& x) {
// Unindexed addressing is not encoded by this function.
- ASSERT_EQ((B27 | B26),
+ DCHECK_EQ((B27 | B26),
(instr & ~(kCondMask | kCoprocessorMask | P | U | N | W | L)));
- ASSERT(x.rn_.is_valid() && !x.rm_.is_valid());
+ DCHECK(x.rn_.is_valid() && !x.rm_.is_valid());
int am = x.am_;
int offset_8 = x.offset_;
- ASSERT((offset_8 & 3) == 0); // offset must be an aligned word offset
+ DCHECK((offset_8 & 3) == 0); // offset must be an aligned word offset
offset_8 >>= 2;
if (offset_8 < 0) {
offset_8 = -offset_8;
am ^= U;
}
- ASSERT(is_uint8(offset_8)); // unsigned word offset must fit in a byte
- ASSERT((am & (P|W)) == P || !x.rn_.is(pc)); // no pc base with writeback
+ DCHECK(is_uint8(offset_8)); // unsigned word offset must fit in a byte
+ DCHECK((am & (P|W)) == P || !x.rn_.is(pc)); // no pc base with writeback
// Post-indexed addressing requires W == 1; different than in addrmod2/3.
if ((am & P) == 0)
am |= W;
- ASSERT(offset_8 >= 0); // no masking needed
+ DCHECK(offset_8 >= 0); // no masking needed
emit(instr | am | x.rn_.code()*B16 | crd.code()*B12 | offset_8);
}
// Branch instructions.
void Assembler::b(int branch_offset, Condition cond) {
- ASSERT((branch_offset & 3) == 0);
+ DCHECK((branch_offset & 3) == 0);
int imm24 = branch_offset >> 2;
- ASSERT(is_int24(imm24));
+ DCHECK(is_int24(imm24));
emit(cond | B27 | B25 | (imm24 & kImm24Mask));
if (cond == al) {
void Assembler::bl(int branch_offset, Condition cond) {
positions_recorder()->WriteRecordedPositions();
- ASSERT((branch_offset & 3) == 0);
+ DCHECK((branch_offset & 3) == 0);
int imm24 = branch_offset >> 2;
- ASSERT(is_int24(imm24));
+ DCHECK(is_int24(imm24));
emit(cond | B27 | B25 | B24 | (imm24 & kImm24Mask));
}
void Assembler::blx(int branch_offset) { // v5 and above
positions_recorder()->WriteRecordedPositions();
- ASSERT((branch_offset & 1) == 0);
+ DCHECK((branch_offset & 1) == 0);
int h = ((branch_offset & 2) >> 1)*B24;
int imm24 = branch_offset >> 2;
- ASSERT(is_int24(imm24));
+ DCHECK(is_int24(imm24));
emit(kSpecialCondition | B27 | B25 | h | (imm24 & kImm24Mask));
}
void Assembler::blx(Register target, Condition cond) { // v5 and above
positions_recorder()->WriteRecordedPositions();
- ASSERT(!target.is(pc));
+ DCHECK(!target.is(pc));
emit(cond | B24 | B21 | 15*B16 | 15*B12 | 15*B8 | BLX | target.code());
}
void Assembler::bx(Register target, Condition cond) { // v5 and above, plus v4t
positions_recorder()->WriteRecordedPositions();
- ASSERT(!target.is(pc)); // use of pc is actually allowed, but discouraged
+ DCHECK(!target.is(pc)); // use of pc is actually allowed, but discouraged
emit(cond | B24 | B21 | 15*B16 | 15*B12 | 15*B8 | BX | target.code());
}
void Assembler::cmp_raw_immediate(
Register src, int raw_immediate, Condition cond) {
- ASSERT(is_uint12(raw_immediate));
+ DCHECK(is_uint12(raw_immediate));
emit(cond | I | CMP | S | src.code() << 16 | raw_immediate);
}
// Don't allow nop instructions in the form mov rn, rn to be generated using
// the mov instruction. They must be generated using nop(int/NopMarkerTypes)
// or MarkCode(int/NopMarkerTypes) pseudo instructions.
- ASSERT(!(src.is_reg() && src.rm().is(dst) && s == LeaveCC && cond == al));
+ DCHECK(!(src.is_reg() && src.rm().is(dst) && s == LeaveCC && cond == al));
addrmod1(cond | MOV | s, r0, dst, src);
}
//
// When the label gets bound: target_at extracts the link and target_at_put
// patches the instructions.
- ASSERT(is_uint24(link));
+ DCHECK(is_uint24(link));
BlockConstPoolScope block_const_pool(this);
emit(link);
nop(dst.code());
void Assembler::movw(Register reg, uint32_t immediate, Condition cond) {
- ASSERT(immediate < 0x10000);
- // May use movw if supported, but on unsupported platforms will try to use
- // equivalent rotated immed_8 value and other tricks before falling back to a
- // constant pool load.
- mov(reg, Operand(immediate), LeaveCC, cond);
+ DCHECK(CpuFeatures::IsSupported(ARMv7));
+ emit(cond | 0x30*B20 | reg.code()*B12 | EncodeMovwImmediate(immediate));
}
void Assembler::movt(Register reg, uint32_t immediate, Condition cond) {
+ DCHECK(CpuFeatures::IsSupported(ARMv7));
emit(cond | 0x34*B20 | reg.code()*B12 | EncodeMovwImmediate(immediate));
}
// Multiply instructions.
void Assembler::mla(Register dst, Register src1, Register src2, Register srcA,
SBit s, Condition cond) {
- ASSERT(!dst.is(pc) && !src1.is(pc) && !src2.is(pc) && !srcA.is(pc));
+ DCHECK(!dst.is(pc) && !src1.is(pc) && !src2.is(pc) && !srcA.is(pc));
emit(cond | A | s | dst.code()*B16 | srcA.code()*B12 |
src2.code()*B8 | B7 | B4 | src1.code());
}
void Assembler::mls(Register dst, Register src1, Register src2, Register srcA,
Condition cond) {
- ASSERT(!dst.is(pc) && !src1.is(pc) && !src2.is(pc) && !srcA.is(pc));
+ DCHECK(!dst.is(pc) && !src1.is(pc) && !src2.is(pc) && !srcA.is(pc));
+ DCHECK(IsEnabled(MLS));
emit(cond | B22 | B21 | dst.code()*B16 | srcA.code()*B12 |
src2.code()*B8 | B7 | B4 | src1.code());
}
void Assembler::sdiv(Register dst, Register src1, Register src2,
Condition cond) {
- ASSERT(!dst.is(pc) && !src1.is(pc) && !src2.is(pc));
- ASSERT(IsEnabled(SUDIV));
+ DCHECK(!dst.is(pc) && !src1.is(pc) && !src2.is(pc));
+ DCHECK(IsEnabled(SUDIV));
emit(cond | B26 | B25| B24 | B20 | dst.code()*B16 | 0xf * B12 |
src2.code()*B8 | B4 | src1.code());
}
+void Assembler::udiv(Register dst, Register src1, Register src2,
+ Condition cond) {
+ DCHECK(!dst.is(pc) && !src1.is(pc) && !src2.is(pc));
+ DCHECK(IsEnabled(SUDIV));
+ emit(cond | B26 | B25 | B24 | B21 | B20 | dst.code() * B16 | 0xf * B12 |
+ src2.code() * B8 | B4 | src1.code());
+}
+
+
void Assembler::mul(Register dst, Register src1, Register src2,
SBit s, Condition cond) {
- ASSERT(!dst.is(pc) && !src1.is(pc) && !src2.is(pc));
+ DCHECK(!dst.is(pc) && !src1.is(pc) && !src2.is(pc));
// dst goes in bits 16-19 for this instruction!
emit(cond | s | dst.code()*B16 | src2.code()*B8 | B7 | B4 | src1.code());
}
Register src2,
SBit s,
Condition cond) {
- ASSERT(!dstL.is(pc) && !dstH.is(pc) && !src1.is(pc) && !src2.is(pc));
- ASSERT(!dstL.is(dstH));
+ DCHECK(!dstL.is(pc) && !dstH.is(pc) && !src1.is(pc) && !src2.is(pc));
+ DCHECK(!dstL.is(dstH));
emit(cond | B23 | B22 | A | s | dstH.code()*B16 | dstL.code()*B12 |
src2.code()*B8 | B7 | B4 | src1.code());
}
Register src2,
SBit s,
Condition cond) {
- ASSERT(!dstL.is(pc) && !dstH.is(pc) && !src1.is(pc) && !src2.is(pc));
- ASSERT(!dstL.is(dstH));
+ DCHECK(!dstL.is(pc) && !dstH.is(pc) && !src1.is(pc) && !src2.is(pc));
+ DCHECK(!dstL.is(dstH));
emit(cond | B23 | B22 | s | dstH.code()*B16 | dstL.code()*B12 |
src2.code()*B8 | B7 | B4 | src1.code());
}
Register src2,
SBit s,
Condition cond) {
- ASSERT(!dstL.is(pc) && !dstH.is(pc) && !src1.is(pc) && !src2.is(pc));
- ASSERT(!dstL.is(dstH));
+ DCHECK(!dstL.is(pc) && !dstH.is(pc) && !src1.is(pc) && !src2.is(pc));
+ DCHECK(!dstL.is(dstH));
emit(cond | B23 | A | s | dstH.code()*B16 | dstL.code()*B12 |
src2.code()*B8 | B7 | B4 | src1.code());
}
Register src2,
SBit s,
Condition cond) {
- ASSERT(!dstL.is(pc) && !dstH.is(pc) && !src1.is(pc) && !src2.is(pc));
- ASSERT(!dstL.is(dstH));
+ DCHECK(!dstL.is(pc) && !dstH.is(pc) && !src1.is(pc) && !src2.is(pc));
+ DCHECK(!dstL.is(dstH));
emit(cond | B23 | s | dstH.code()*B16 | dstL.code()*B12 |
src2.code()*B8 | B7 | B4 | src1.code());
}
// Miscellaneous arithmetic instructions.
void Assembler::clz(Register dst, Register src, Condition cond) {
// v5 and above.
- ASSERT(!dst.is(pc) && !src.is(pc));
+ DCHECK(!dst.is(pc) && !src.is(pc));
emit(cond | B24 | B22 | B21 | 15*B16 | dst.code()*B12 |
15*B8 | CLZ | src.code());
}
const Operand& src,
Condition cond) {
// v6 and above.
- ASSERT(CpuFeatures::IsSupported(ARMv7));
- ASSERT(!dst.is(pc) && !src.rm_.is(pc));
- ASSERT((satpos >= 0) && (satpos <= 31));
- ASSERT((src.shift_op_ == ASR) || (src.shift_op_ == LSL));
- ASSERT(src.rs_.is(no_reg));
+ DCHECK(CpuFeatures::IsSupported(ARMv7));
+ DCHECK(!dst.is(pc) && !src.rm_.is(pc));
+ DCHECK((satpos >= 0) && (satpos <= 31));
+ DCHECK((src.shift_op_ == ASR) || (src.shift_op_ == LSL));
+ DCHECK(src.rs_.is(no_reg));
int sh = 0;
if (src.shift_op_ == ASR) {
int width,
Condition cond) {
// v7 and above.
- ASSERT(CpuFeatures::IsSupported(ARMv7));
- ASSERT(!dst.is(pc) && !src.is(pc));
- ASSERT((lsb >= 0) && (lsb <= 31));
- ASSERT((width >= 1) && (width <= (32 - lsb)));
+ DCHECK(CpuFeatures::IsSupported(ARMv7));
+ DCHECK(!dst.is(pc) && !src.is(pc));
+ DCHECK((lsb >= 0) && (lsb <= 31));
+ DCHECK((width >= 1) && (width <= (32 - lsb)));
emit(cond | 0xf*B23 | B22 | B21 | (width - 1)*B16 | dst.code()*B12 |
lsb*B7 | B6 | B4 | src.code());
}
int width,
Condition cond) {
// v7 and above.
- ASSERT(CpuFeatures::IsSupported(ARMv7));
- ASSERT(!dst.is(pc) && !src.is(pc));
- ASSERT((lsb >= 0) && (lsb <= 31));
- ASSERT((width >= 1) && (width <= (32 - lsb)));
+ DCHECK(CpuFeatures::IsSupported(ARMv7));
+ DCHECK(!dst.is(pc) && !src.is(pc));
+ DCHECK((lsb >= 0) && (lsb <= 31));
+ DCHECK((width >= 1) && (width <= (32 - lsb)));
emit(cond | 0xf*B23 | B21 | (width - 1)*B16 | dst.code()*B12 |
lsb*B7 | B6 | B4 | src.code());
}
// bfc dst, #lsb, #width
void Assembler::bfc(Register dst, int lsb, int width, Condition cond) {
// v7 and above.
- ASSERT(CpuFeatures::IsSupported(ARMv7));
- ASSERT(!dst.is(pc));
- ASSERT((lsb >= 0) && (lsb <= 31));
- ASSERT((width >= 1) && (width <= (32 - lsb)));
+ DCHECK(CpuFeatures::IsSupported(ARMv7));
+ DCHECK(!dst.is(pc));
+ DCHECK((lsb >= 0) && (lsb <= 31));
+ DCHECK((width >= 1) && (width <= (32 - lsb)));
int msb = lsb + width - 1;
emit(cond | 0x1f*B22 | msb*B16 | dst.code()*B12 | lsb*B7 | B4 | 0xf);
}
int width,
Condition cond) {
// v7 and above.
- ASSERT(CpuFeatures::IsSupported(ARMv7));
- ASSERT(!dst.is(pc) && !src.is(pc));
- ASSERT((lsb >= 0) && (lsb <= 31));
- ASSERT((width >= 1) && (width <= (32 - lsb)));
+ DCHECK(CpuFeatures::IsSupported(ARMv7));
+ DCHECK(!dst.is(pc) && !src.is(pc));
+ DCHECK((lsb >= 0) && (lsb <= 31));
+ DCHECK((width >= 1) && (width <= (32 - lsb)));
int msb = lsb + width - 1;
emit(cond | 0x1f*B22 | msb*B16 | dst.code()*B12 | lsb*B7 | B4 |
src.code());
// Instruction details available in ARM DDI 0406C.b, A8.8.125.
// cond(31-28) | 01101000(27-20) | Rn(19-16) |
// Rd(15-12) | imm5(11-7) | 0(6) | 01(5-4) | Rm(3-0)
- ASSERT(!dst.is(pc));
- ASSERT(!src1.is(pc));
- ASSERT(!src2.rm().is(pc));
- ASSERT(!src2.rm().is(no_reg));
- ASSERT(src2.rs().is(no_reg));
- ASSERT((src2.shift_imm_ >= 0) && (src2.shift_imm_ <= 31));
- ASSERT(src2.shift_op() == LSL);
+ DCHECK(!dst.is(pc));
+ DCHECK(!src1.is(pc));
+ DCHECK(!src2.rm().is(pc));
+ DCHECK(!src2.rm().is(no_reg));
+ DCHECK(src2.rs().is(no_reg));
+ DCHECK((src2.shift_imm_ >= 0) && (src2.shift_imm_ <= 31));
+ DCHECK(src2.shift_op() == LSL);
emit(cond | 0x68*B20 | src1.code()*B16 | dst.code()*B12 |
src2.shift_imm_*B7 | B4 | src2.rm().code());
}
// Instruction details available in ARM DDI 0406C.b, A8.8.125.
// cond(31-28) | 01101000(27-20) | Rn(19-16) |
// Rd(15-12) | imm5(11-7) | 1(6) | 01(5-4) | Rm(3-0)
- ASSERT(!dst.is(pc));
- ASSERT(!src1.is(pc));
- ASSERT(!src2.rm().is(pc));
- ASSERT(!src2.rm().is(no_reg));
- ASSERT(src2.rs().is(no_reg));
- ASSERT((src2.shift_imm_ >= 1) && (src2.shift_imm_ <= 32));
- ASSERT(src2.shift_op() == ASR);
+ DCHECK(!dst.is(pc));
+ DCHECK(!src1.is(pc));
+ DCHECK(!src2.rm().is(pc));
+ DCHECK(!src2.rm().is(no_reg));
+ DCHECK(src2.rs().is(no_reg));
+ DCHECK((src2.shift_imm_ >= 1) && (src2.shift_imm_ <= 32));
+ DCHECK(src2.shift_op() == ASR);
int asr = (src2.shift_imm_ == 32) ? 0 : src2.shift_imm_;
emit(cond | 0x68*B20 | src1.code()*B16 | dst.code()*B12 |
asr*B7 | B6 | B4 | src2.rm().code());
// Instruction details available in ARM DDI 0406C.b, A8.8.274.
// cond(31-28) | 01101110(27-20) | 1111(19-16) |
// Rd(15-12) | rotate(11-10) | 00(9-8)| 0111(7-4) | Rm(3-0)
- ASSERT(!dst.is(pc));
- ASSERT(!src.rm().is(pc));
- ASSERT(!src.rm().is(no_reg));
- ASSERT(src.rs().is(no_reg));
- ASSERT((src.shift_imm_ == 0) ||
+ DCHECK(!dst.is(pc));
+ DCHECK(!src.rm().is(pc));
+ DCHECK(!src.rm().is(no_reg));
+ DCHECK(src.rs().is(no_reg));
+ DCHECK((src.shift_imm_ == 0) ||
(src.shift_imm_ == 8) ||
(src.shift_imm_ == 16) ||
(src.shift_imm_ == 24));
// Operand maps ROR #0 to LSL #0.
- ASSERT((src.shift_op() == ROR) ||
+ DCHECK((src.shift_op() == ROR) ||
((src.shift_op() == LSL) && (src.shift_imm_ == 0)));
emit(cond | 0x6E*B20 | 0xF*B16 | dst.code()*B12 |
((src.shift_imm_ >> 1)&0xC)*B8 | 7*B4 | src.rm().code());
// Instruction details available in ARM DDI 0406C.b, A8.8.271.
// cond(31-28) | 01101110(27-20) | Rn(19-16) |
// Rd(15-12) | rotate(11-10) | 00(9-8)| 0111(7-4) | Rm(3-0)
- ASSERT(!dst.is(pc));
- ASSERT(!src1.is(pc));
- ASSERT(!src2.rm().is(pc));
- ASSERT(!src2.rm().is(no_reg));
- ASSERT(src2.rs().is(no_reg));
- ASSERT((src2.shift_imm_ == 0) ||
+ DCHECK(!dst.is(pc));
+ DCHECK(!src1.is(pc));
+ DCHECK(!src2.rm().is(pc));
+ DCHECK(!src2.rm().is(no_reg));
+ DCHECK(src2.rs().is(no_reg));
+ DCHECK((src2.shift_imm_ == 0) ||
(src2.shift_imm_ == 8) ||
(src2.shift_imm_ == 16) ||
(src2.shift_imm_ == 24));
// Operand maps ROR #0 to LSL #0.
- ASSERT((src2.shift_op() == ROR) ||
+ DCHECK((src2.shift_op() == ROR) ||
((src2.shift_op() == LSL) && (src2.shift_imm_ == 0)));
emit(cond | 0x6E*B20 | src1.code()*B16 | dst.code()*B12 |
((src2.shift_imm_ >> 1) &0xC)*B8 | 7*B4 | src2.rm().code());
// Instruction details available in ARM DDI 0406C.b, A8.8.275.
// cond(31-28) | 01101100(27-20) | 1111(19-16) |
// Rd(15-12) | rotate(11-10) | 00(9-8)| 0111(7-4) | Rm(3-0)
- ASSERT(!dst.is(pc));
- ASSERT(!src.rm().is(pc));
- ASSERT(!src.rm().is(no_reg));
- ASSERT(src.rs().is(no_reg));
- ASSERT((src.shift_imm_ == 0) ||
+ DCHECK(!dst.is(pc));
+ DCHECK(!src.rm().is(pc));
+ DCHECK(!src.rm().is(no_reg));
+ DCHECK(src.rs().is(no_reg));
+ DCHECK((src.shift_imm_ == 0) ||
(src.shift_imm_ == 8) ||
(src.shift_imm_ == 16) ||
(src.shift_imm_ == 24));
// Operand maps ROR #0 to LSL #0.
- ASSERT((src.shift_op() == ROR) ||
+ DCHECK((src.shift_op() == ROR) ||
((src.shift_op() == LSL) && (src.shift_imm_ == 0)));
emit(cond | 0x6C*B20 | 0xF*B16 | dst.code()*B12 |
((src.shift_imm_ >> 1)&0xC)*B8 | 7*B4 | src.rm().code());
// Status register access instructions.
void Assembler::mrs(Register dst, SRegister s, Condition cond) {
- ASSERT(!dst.is(pc));
+ DCHECK(!dst.is(pc));
emit(cond | B24 | s | 15*B16 | dst.code()*B12);
}
void Assembler::msr(SRegisterFieldMask fields, const Operand& src,
Condition cond) {
- ASSERT(fields >= B16 && fields < B20); // at least one field set
+ DCHECK(fields >= B16 && fields < B20); // at least one field set
Instr instr;
if (!src.rm_.is_valid()) {
// Immediate.
}
instr = I | rotate_imm*B8 | immed_8;
} else {
- ASSERT(!src.rs_.is_valid() && src.shift_imm_ == 0); // only rm allowed
+ DCHECK(!src.rs_.is_valid() && src.shift_imm_ == 0); // only rm allowed
instr = src.rm_.code();
}
emit(cond | instr | B24 | B21 | fields | 15*B12);
void Assembler::ldrd(Register dst1, Register dst2,
const MemOperand& src, Condition cond) {
- ASSERT(IsEnabled(ARMv7));
- ASSERT(src.rm().is(no_reg));
- ASSERT(!dst1.is(lr)); // r14.
- ASSERT_EQ(0, dst1.code() % 2);
- ASSERT_EQ(dst1.code() + 1, dst2.code());
+ DCHECK(IsEnabled(ARMv7));
+ DCHECK(src.rm().is(no_reg));
+ DCHECK(!dst1.is(lr)); // r14.
+ DCHECK_EQ(0, dst1.code() % 2);
+ DCHECK_EQ(dst1.code() + 1, dst2.code());
addrmod3(cond | B7 | B6 | B4, dst1, src);
}
void Assembler::strd(Register src1, Register src2,
const MemOperand& dst, Condition cond) {
- ASSERT(dst.rm().is(no_reg));
- ASSERT(!src1.is(lr)); // r14.
- ASSERT_EQ(0, src1.code() % 2);
- ASSERT_EQ(src1.code() + 1, src2.code());
- ASSERT(IsEnabled(ARMv7));
+ DCHECK(dst.rm().is(no_reg));
+ DCHECK(!src1.is(lr)); // r14.
+ DCHECK_EQ(0, src1.code() % 2);
+ DCHECK_EQ(src1.code() + 1, src2.code());
+ DCHECK(IsEnabled(ARMv7));
addrmod3(cond | B7 | B6 | B5 | B4, src1, dst);
}
// Instruction details available in ARM DDI 0406C.b, A8.8.128.
// 1111(31-28) | 0111(27-24) | U(23) | R(22) | 01(21-20) | Rn(19-16) |
// 1111(15-12) | imm5(11-07) | type(6-5) | 0(4)| Rm(3-0) |
- ASSERT(address.rm().is(no_reg));
- ASSERT(address.am() == Offset);
+ DCHECK(address.rm().is(no_reg));
+ DCHECK(address.am() == Offset);
int U = B23;
int offset = address.offset();
if (offset < 0) {
offset = -offset;
U = 0;
}
- ASSERT(offset < 4096);
+ DCHECK(offset < 4096);
emit(kSpecialCondition | B26 | B24 | U | B22 | B20 | address.rn().code()*B16 |
0xf*B12 | offset);
}
RegList dst,
Condition cond) {
// ABI stack constraint: ldmxx base, {..sp..} base != sp is not restartable.
- ASSERT(base.is(sp) || (dst & sp.bit()) == 0);
+ DCHECK(base.is(sp) || (dst & sp.bit()) == 0);
addrmod4(cond | B27 | am | L, base, dst);
// enabling/disabling and a counter feature. See simulator-arm.h .
void Assembler::stop(const char* msg, Condition cond, int32_t code) {
#ifndef __arm__
- ASSERT(code >= kDefaultStopCode);
+ DCHECK(code >= kDefaultStopCode);
{
// The Simulator will handle the stop instruction and get the message
// address. It expects to find the address just after the svc instruction.
void Assembler::bkpt(uint32_t imm16) { // v5 and above
- ASSERT(is_uint16(imm16));
+ DCHECK(is_uint16(imm16));
emit(al | B24 | B21 | (imm16 >> 4)*B8 | BKPT | (imm16 & 0xf));
}
void Assembler::svc(uint32_t imm24, Condition cond) {
- ASSERT(is_uint24(imm24));
+ DCHECK(is_uint24(imm24));
emit(cond | 15*B24 | imm24);
}
CRegister crm,
int opcode_2,
Condition cond) {
- ASSERT(is_uint4(opcode_1) && is_uint3(opcode_2));
+ DCHECK(is_uint4(opcode_1) && is_uint3(opcode_2));
emit(cond | B27 | B26 | B25 | (opcode_1 & 15)*B20 | crn.code()*B16 |
crd.code()*B12 | coproc*B8 | (opcode_2 & 7)*B5 | crm.code());
}
CRegister crm,
int opcode_2,
Condition cond) {
- ASSERT(is_uint3(opcode_1) && is_uint3(opcode_2));
+ DCHECK(is_uint3(opcode_1) && is_uint3(opcode_2));
emit(cond | B27 | B26 | B25 | (opcode_1 & 7)*B21 | crn.code()*B16 |
rd.code()*B12 | coproc*B8 | (opcode_2 & 7)*B5 | B4 | crm.code());
}
CRegister crm,
int opcode_2,
Condition cond) {
- ASSERT(is_uint3(opcode_1) && is_uint3(opcode_2));
+ DCHECK(is_uint3(opcode_1) && is_uint3(opcode_2));
emit(cond | B27 | B26 | B25 | (opcode_1 & 7)*B21 | L | crn.code()*B16 |
rd.code()*B12 | coproc*B8 | (opcode_2 & 7)*B5 | B4 | crm.code());
}
LFlag l,
Condition cond) {
// Unindexed addressing.
- ASSERT(is_uint8(option));
+ DCHECK(is_uint8(option));
emit(cond | B27 | B26 | U | l | L | rn.code()*B16 | crd.code()*B12 |
coproc*B8 | (option & 255));
}
int vd, d;
dst.split_code(&vd, &d);
- ASSERT(offset >= 0);
+ DCHECK(offset >= 0);
if ((offset % 4) == 0 && (offset / 4) < 256) {
emit(cond | 0xD*B24 | u*B23 | d*B22 | B20 | base.code()*B16 | vd*B12 |
0xB*B8 | ((offset / 4) & 255));
} else {
// Larger offsets must be handled by computing the correct address
// in the ip register.
- ASSERT(!base.is(ip));
+ DCHECK(!base.is(ip));
if (u == 1) {
add(ip, base, Operand(offset));
} else {
void Assembler::vldr(const DwVfpRegister dst,
const MemOperand& operand,
const Condition cond) {
- ASSERT(!operand.rm().is_valid());
- ASSERT(operand.am_ == Offset);
- vldr(dst, operand.rn(), operand.offset(), cond);
+ DCHECK(operand.am_ == Offset);
+ if (operand.rm().is_valid()) {
+ add(ip, operand.rn(),
+ Operand(operand.rm(), operand.shift_op_, operand.shift_imm_));
+ vldr(dst, ip, 0, cond);
+ } else {
+ vldr(dst, operand.rn(), operand.offset(), cond);
+ }
}
}
int sd, d;
dst.split_code(&sd, &d);
- ASSERT(offset >= 0);
+ DCHECK(offset >= 0);
if ((offset % 4) == 0 && (offset / 4) < 256) {
emit(cond | u*B23 | d*B22 | 0xD1*B20 | base.code()*B16 | sd*B12 |
} else {
// Larger offsets must be handled by computing the correct address
// in the ip register.
- ASSERT(!base.is(ip));
+ DCHECK(!base.is(ip));
if (u == 1) {
add(ip, base, Operand(offset));
} else {
void Assembler::vldr(const SwVfpRegister dst,
const MemOperand& operand,
const Condition cond) {
- ASSERT(!operand.rm().is_valid());
- ASSERT(operand.am_ == Offset);
- vldr(dst, operand.rn(), operand.offset(), cond);
+ DCHECK(operand.am_ == Offset);
+ if (operand.rm().is_valid()) {
+ add(ip, operand.rn(),
+ Operand(operand.rm(), operand.shift_op_, operand.shift_imm_));
+ vldr(dst, ip, 0, cond);
+ } else {
+ vldr(dst, operand.rn(), operand.offset(), cond);
+ }
}
offset = -offset;
u = 0;
}
- ASSERT(offset >= 0);
+ DCHECK(offset >= 0);
int vd, d;
src.split_code(&vd, &d);
} else {
// Larger offsets must be handled by computing the correct address
// in the ip register.
- ASSERT(!base.is(ip));
+ DCHECK(!base.is(ip));
if (u == 1) {
add(ip, base, Operand(offset));
} else {
void Assembler::vstr(const DwVfpRegister src,
const MemOperand& operand,
const Condition cond) {
- ASSERT(!operand.rm().is_valid());
- ASSERT(operand.am_ == Offset);
- vstr(src, operand.rn(), operand.offset(), cond);
+ DCHECK(operand.am_ == Offset);
+ if (operand.rm().is_valid()) {
+ add(ip, operand.rn(),
+ Operand(operand.rm(), operand.shift_op_, operand.shift_imm_));
+ vstr(src, ip, 0, cond);
+ } else {
+ vstr(src, operand.rn(), operand.offset(), cond);
+ }
}
}
int sd, d;
src.split_code(&sd, &d);
- ASSERT(offset >= 0);
+ DCHECK(offset >= 0);
if ((offset % 4) == 0 && (offset / 4) < 256) {
emit(cond | u*B23 | d*B22 | 0xD0*B20 | base.code()*B16 | sd*B12 |
0xA*B8 | ((offset / 4) & 255));
} else {
// Larger offsets must be handled by computing the correct address
// in the ip register.
- ASSERT(!base.is(ip));
+ DCHECK(!base.is(ip));
if (u == 1) {
add(ip, base, Operand(offset));
} else {
void Assembler::vstr(const SwVfpRegister src,
const MemOperand& operand,
const Condition cond) {
- ASSERT(!operand.rm().is_valid());
- ASSERT(operand.am_ == Offset);
- vstr(src, operand.rn(), operand.offset(), cond);
+ DCHECK(operand.am_ == Offset);
+ if (operand.rm().is_valid()) {
+ add(ip, operand.rn(),
+ Operand(operand.rm(), operand.shift_op_, operand.shift_imm_));
+ vstr(src, ip, 0, cond);
+ } else {
+ vstr(src, operand.rn(), operand.offset(), cond);
+ }
}
// Instruction details available in ARM DDI 0406C.b, A8-922.
// cond(31-28) | 110(27-25)| PUDW1(24-20) | Rbase(19-16) |
// first(15-12) | 1011(11-8) | (count * 2)
- ASSERT_LE(first.code(), last.code());
- ASSERT(am == ia || am == ia_w || am == db_w);
- ASSERT(!base.is(pc));
+ DCHECK_LE(first.code(), last.code());
+ DCHECK(am == ia || am == ia_w || am == db_w);
+ DCHECK(!base.is(pc));
int sd, d;
first.split_code(&sd, &d);
int count = last.code() - first.code() + 1;
- ASSERT(count <= 16);
+ DCHECK(count <= 16);
emit(cond | B27 | B26 | am | d*B22 | B20 | base.code()*B16 | sd*B12 |
0xB*B8 | count*2);
}
// Instruction details available in ARM DDI 0406C.b, A8-1080.
// cond(31-28) | 110(27-25)| PUDW0(24-20) | Rbase(19-16) |
// first(15-12) | 1011(11-8) | (count * 2)
- ASSERT_LE(first.code(), last.code());
- ASSERT(am == ia || am == ia_w || am == db_w);
- ASSERT(!base.is(pc));
+ DCHECK_LE(first.code(), last.code());
+ DCHECK(am == ia || am == ia_w || am == db_w);
+ DCHECK(!base.is(pc));
int sd, d;
first.split_code(&sd, &d);
int count = last.code() - first.code() + 1;
- ASSERT(count <= 16);
+ DCHECK(count <= 16);
emit(cond | B27 | B26 | am | d*B22 | base.code()*B16 | sd*B12 |
0xB*B8 | count*2);
}
// Instruction details available in ARM DDI 0406A, A8-626.
// cond(31-28) | 110(27-25)| PUDW1(24-20) | Rbase(19-16) |
// first(15-12) | 1010(11-8) | (count/2)
- ASSERT_LE(first.code(), last.code());
- ASSERT(am == ia || am == ia_w || am == db_w);
- ASSERT(!base.is(pc));
+ DCHECK_LE(first.code(), last.code());
+ DCHECK(am == ia || am == ia_w || am == db_w);
+ DCHECK(!base.is(pc));
int sd, d;
first.split_code(&sd, &d);
// Instruction details available in ARM DDI 0406A, A8-784.
// cond(31-28) | 110(27-25)| PUDW0(24-20) | Rbase(19-16) |
// first(15-12) | 1011(11-8) | (count/2)
- ASSERT_LE(first.code(), last.code());
- ASSERT(am == ia || am == ia_w || am == db_w);
- ASSERT(!base.is(pc));
+ DCHECK_LE(first.code(), last.code());
+ DCHECK(am == ia || am == ia_w || am == db_w);
+ DCHECK(!base.is(pc));
int sd, d;
first.split_code(&sd, &d);
static void DoubleAsTwoUInt32(double d, uint32_t* lo, uint32_t* hi) {
uint64_t i;
- OS::MemCopy(&i, &d, 8);
+ memcpy(&i, &d, 8);
*lo = i & 0xffffffff;
*hi = i >> 32;
// Only works for little endian floating point formats.
// We don't support VFP on the mixed endian floating point platform.
static bool FitsVMOVDoubleImmediate(double d, uint32_t *encoding) {
- ASSERT(CpuFeatures::IsSupported(VFP3));
+ DCHECK(CpuFeatures::IsSupported(VFP3));
// VMOV can accept an immediate of the form:
//
int vd, d;
dst.split_code(&vd, &d);
emit(al | 0x1D*B23 | d*B22 | 0x3*B20 | vd*B12 | 0x5*B9 | B8 | enc);
- } else if (FLAG_enable_vldr_imm && can_use_constant_pool()) {
+ } else if (FLAG_enable_vldr_imm && is_constant_pool_available()) {
// TODO(jfb) Temporarily turned off until we have constant blinding or
// some equivalent mitigation: an attacker can otherwise control
// generated data which also happens to be executable, a Very Bad
// that's tricky because vldr has a limited reach. Furthermore
// it breaks load locality.
RelocInfo rinfo(pc_, imm);
- ConstantPoolAddEntry(rinfo);
- vldr(dst, MemOperand(FLAG_enable_ool_constant_pool ? pp : pc, 0));
+ ConstantPoolArray::LayoutSection section = ConstantPoolAddEntry(rinfo);
+ if (section == ConstantPoolArray::EXTENDED_SECTION) {
+ DCHECK(FLAG_enable_ool_constant_pool);
+ // Emit instructions to load constant pool offset.
+ movw(ip, 0);
+ movt(ip, 0);
+ // Load from constant pool at offset.
+ vldr(dst, MemOperand(pp, ip));
+ } else {
+ DCHECK(section == ConstantPoolArray::SMALL_SECTION);
+ vldr(dst, MemOperand(FLAG_enable_ool_constant_pool ? pp : pc, 0));
+ }
} else {
// Synthesise the double from ARM immediates.
uint32_t lo, hi;
// Instruction details available in ARM DDI 0406C.b, A8-940.
// cond(31-28) | 1110(27-24) | 0(23) | opc1=0index(22-21) | 0(20) |
// Vd(19-16) | Rt(15-12) | 1011(11-8) | D(7) | opc2=00(6-5) | 1(4) | 0000(3-0)
- ASSERT(index.index == 0 || index.index == 1);
+ DCHECK(index.index == 0 || index.index == 1);
int vd, d;
dst.split_code(&vd, &d);
emit(cond | 0xE*B24 | index.index*B21 | vd*B16 | src.code()*B12 | 0xB*B8 |
// Instruction details available in ARM DDI 0406C.b, A8.8.342.
// cond(31-28) | 1110(27-24) | U=0(23) | opc1=0index(22-21) | 1(20) |
// Vn(19-16) | Rt(15-12) | 1011(11-8) | N(7) | opc2=00(6-5) | 1(4) | 0000(3-0)
- ASSERT(index.index == 0 || index.index == 1);
+ DCHECK(index.index == 0 || index.index == 1);
int vn, n;
src.split_code(&vn, &n);
emit(cond | 0xE*B24 | index.index*B21 | B20 | vn*B16 | dst.code()*B12 |
// Instruction details available in ARM DDI 0406C.b, A8-948.
// cond(31-28) | 1100(27-24)| 010(23-21) | op=0(20) | Rt2(19-16) |
// Rt(15-12) | 1011(11-8) | 00(7-6) | M(5) | 1(4) | Vm
- ASSERT(!src1.is(pc) && !src2.is(pc));
+ DCHECK(!src1.is(pc) && !src2.is(pc));
int vm, m;
dst.split_code(&vm, &m);
emit(cond | 0xC*B24 | B22 | src2.code()*B16 |
// Instruction details available in ARM DDI 0406C.b, A8-948.
// cond(31-28) | 1100(27-24)| 010(23-21) | op=1(20) | Rt2(19-16) |
// Rt(15-12) | 1011(11-8) | 00(7-6) | M(5) | 1(4) | Vm
- ASSERT(!dst1.is(pc) && !dst2.is(pc));
+ DCHECK(!dst1.is(pc) && !dst2.is(pc));
int vm, m;
src.split_code(&vm, &m);
emit(cond | 0xC*B24 | B22 | B20 | dst2.code()*B16 |
// Instruction details available in ARM DDI 0406A, A8-642.
// cond(31-28) | 1110(27-24)| 000(23-21) | op=0(20) | Vn(19-16) |
// Rt(15-12) | 1010(11-8) | N(7)=0 | 00(6-5) | 1(4) | 0000(3-0)
- ASSERT(!src.is(pc));
+ DCHECK(!src.is(pc));
int sn, n;
dst.split_code(&sn, &n);
emit(cond | 0xE*B24 | sn*B16 | src.code()*B12 | 0xA*B8 | n*B7 | B4);
// Instruction details available in ARM DDI 0406A, A8-642.
// cond(31-28) | 1110(27-24)| 000(23-21) | op=1(20) | Vn(19-16) |
// Rt(15-12) | 1010(11-8) | N(7)=0 | 00(6-5) | 1(4) | 0000(3-0)
- ASSERT(!dst.is(pc));
+ DCHECK(!dst.is(pc));
int sn, n;
src.split_code(&sn, &n);
emit(cond | 0xE*B24 | B20 | sn*B16 | dst.code()*B12 | 0xA*B8 | n*B7 | B4);
int reg_code,
int* vm,
int* m) {
- ASSERT((reg_code >= 0) && (reg_code <= 31));
+ DCHECK((reg_code >= 0) && (reg_code <= 31));
if (IsIntegerVFPType(reg_type) || !IsDoubleVFPType(reg_type)) {
// 32 bit type.
*m = reg_code & 0x1;
const int src_code,
VFPConversionMode mode,
const Condition cond) {
- ASSERT(src_type != dst_type);
+ DCHECK(src_type != dst_type);
int D, Vd, M, Vm;
SplitRegCode(src_type, src_code, &Vm, &M);
SplitRegCode(dst_type, dst_code, &Vd, &D);
// Instruction details available in ARM DDI 0406B, A8.6.295.
// cond(31-28) | 11101(27-23)| D(22) | 11(21-20) | 1(19) | opc2(18-16) |
// Vd(15-12) | 101(11-9) | sz(8) | op(7) | 1(6) | M(5) | 0(4) | Vm(3-0)
- ASSERT(!IsIntegerVFPType(dst_type) || !IsIntegerVFPType(src_type));
+ DCHECK(!IsIntegerVFPType(dst_type) || !IsIntegerVFPType(src_type));
int sz, opc2, op;
sz = IsDoubleVFPType(src_type) ? 0x1 : 0x0;
op = mode;
} else {
- ASSERT(IsIntegerVFPType(src_type));
+ DCHECK(IsIntegerVFPType(src_type));
opc2 = 0x0;
sz = IsDoubleVFPType(dst_type) ? 0x1 : 0x0;
op = IsSignedVFPType(src_type) ? 0x1 : 0x0;
// Instruction details available in ARM DDI 0406C.b, A8-874.
// cond(31-28) | 11101(27-23) | D(22) | 11(21-20) | 1010(19-16) | Vd(15-12) |
// 101(11-9) | sf=1(8) | sx=1(7) | 1(6) | i(5) | 0(4) | imm4(3-0)
- ASSERT(fraction_bits > 0 && fraction_bits <= 32);
- ASSERT(CpuFeatures::IsSupported(VFP3));
+ DCHECK(fraction_bits > 0 && fraction_bits <= 32);
+ DCHECK(CpuFeatures::IsSupported(VFP3));
int vd, d;
dst.split_code(&vd, &d);
- int i = ((32 - fraction_bits) >> 4) & 1;
- int imm4 = (32 - fraction_bits) & 0xf;
+ int imm5 = 32 - fraction_bits;
+ int i = imm5 & 1;
+ int imm4 = (imm5 >> 1) & 0xf;
emit(cond | 0xE*B24 | B23 | d*B22 | 0x3*B20 | B19 | 0x2*B16 |
vd*B12 | 0x5*B9 | B8 | B7 | B6 | i*B5 | imm4);
}
// Instruction details available in ARM DDI 0406C.b, A8-864.
// cond(31-28) | 11101(27-23)| D(22) | 11(21-20) | 0101(19-16) |
// Vd(15-12) | 101(11-9) | sz=1(8) | E=0(7) | 1(6) | 0(5) | 0(4) | 0000(3-0)
- ASSERT(src2 == 0.0);
+ DCHECK(src2 == 0.0);
int vd, d;
src1.split_code(&vd, &d);
emit(cond | 0x1D*B23 | d*B22 | 0x3*B20 | 0x5*B16 | vd*B12 | 0x5*B9 | B8 | B6);
// Instruction details available in ARM DDI 0406C.b, A8.8.320.
// 1111(31-28) | 01000(27-23) | D(22) | 10(21-20) | Rn(19-16) |
// Vd(15-12) | type(11-8) | size(7-6) | align(5-4) | Rm(3-0)
- ASSERT(CpuFeatures::IsSupported(NEON));
+ DCHECK(CpuFeatures::IsSupported(NEON));
int vd, d;
dst.base().split_code(&vd, &d);
emit(0xFU*B28 | 4*B24 | d*B22 | 2*B20 | src.rn().code()*B16 | vd*B12 |
// Instruction details available in ARM DDI 0406C.b, A8.8.404.
// 1111(31-28) | 01000(27-23) | D(22) | 00(21-20) | Rn(19-16) |
// Vd(15-12) | type(11-8) | size(7-6) | align(5-4) | Rm(3-0)
- ASSERT(CpuFeatures::IsSupported(NEON));
+ DCHECK(CpuFeatures::IsSupported(NEON));
int vd, d;
src.base().split_code(&vd, &d);
emit(0xFU*B28 | 4*B24 | d*B22 | dst.rn().code()*B16 | vd*B12 | src.type()*B8 |
// Instruction details available in ARM DDI 0406C.b, A8.8.346.
// 1111(31-28) | 001(27-25) | U(24) | 1(23) | D(22) | imm3(21-19) |
// 000(18-16) | Vd(15-12) | 101000(11-6) | M(5) | 1(4) | Vm(3-0)
- ASSERT(CpuFeatures::IsSupported(NEON));
+ DCHECK(CpuFeatures::IsSupported(NEON));
int vd, d;
dst.split_code(&vd, &d);
int vm, m;
// MOV Rx, Rx as NOP and it performs better even in newer CPUs.
// We therefore use MOV Rx, Rx, even on newer CPUs, and use Rx to encode
// a type.
- ASSERT(0 <= type && type <= 14); // mov pc, pc isn't a nop.
+ DCHECK(0 <= type && type <= 14); // mov pc, pc isn't a nop.
emit(al | 13*B21 | type*B12 | type);
}
instr &= ~(((kNumberOfConditions - 1) << 28) | // Mask off conditions
((kNumRegisters-1)*B12) | // mask out register
EncodeMovwImmediate(0xFFFF)); // mask out immediate value
- return instr == 0x34*B20;
+ return instr == kMovtPattern;
}
instr &= ~(((kNumberOfConditions - 1) << 28) | // Mask off conditions
((kNumRegisters-1)*B12) | // mask out destination
EncodeMovwImmediate(0xFFFF)); // mask out immediate value
- return instr == 0x30*B20;
+ return instr == kMovwPattern;
+}
+
+
+Instr Assembler::GetMovTPattern() { return kMovtPattern; }
+
+
+Instr Assembler::GetMovWPattern() { return kMovwPattern; }
+
+
+Instr Assembler::EncodeMovwImmediate(uint32_t immediate) {
+ DCHECK(immediate < 0x10000);
+ return ((immediate & 0xf000) << 4) | (immediate & 0xfff);
+}
+
+
+Instr Assembler::PatchMovwImmediate(Instr instruction, uint32_t immediate) {
+ instruction &= ~EncodeMovwImmediate(0xffff);
+ return instruction | EncodeMovwImmediate(immediate);
+}
+
+
+int Assembler::DecodeShiftImm(Instr instr) {
+ int rotate = Instruction::RotateValue(instr) * 2;
+ int immed8 = Instruction::Immed8Value(instr);
+ return (immed8 >> rotate) | (immed8 << (32 - rotate));
+}
+
+
+Instr Assembler::PatchShiftImm(Instr instr, int immed) {
+ uint32_t rotate_imm = 0;
+ uint32_t immed_8 = 0;
+ bool immed_fits = fits_shifter(immed, &rotate_imm, &immed_8, NULL);
+ DCHECK(immed_fits);
+ USE(immed_fits);
+ return (instr & ~kOff12Mask) | (rotate_imm << 8) | immed_8;
}
bool Assembler::IsNop(Instr instr, int type) {
- ASSERT(0 <= type && type <= 14); // mov pc, pc isn't a nop.
+ DCHECK(0 <= type && type <= 14); // mov pc, pc isn't a nop.
// Check for mov rx, rx where x = type.
return instr == (al | 13*B21 | type*B12 | type);
}
+bool Assembler::IsMovImmed(Instr instr) {
+ return (instr & kMovImmedMask) == kMovImmedPattern;
+}
+
+
+bool Assembler::IsOrrImmed(Instr instr) {
+ return (instr & kOrrImmedMask) == kOrrImmedPattern;
+}
+
+
+// static
bool Assembler::ImmediateFitsAddrMode1Instruction(int32_t imm32) {
uint32_t dummy1;
uint32_t dummy2;
void Assembler::RecordConstPool(int size) {
// We only need this for debugger support, to correctly compute offsets in the
// code.
-#ifdef ENABLE_DEBUGGER_SUPPORT
RecordRelocInfo(RelocInfo::CONST_POOL, static_cast<intptr_t>(size));
-#endif
}
// Compute new buffer size.
CodeDesc desc; // the new buffer
- if (buffer_size_ < 4*KB) {
- desc.buffer_size = 4*KB;
- } else if (buffer_size_ < 1*MB) {
+ if (buffer_size_ < 1 * MB) {
desc.buffer_size = 2*buffer_size_;
} else {
desc.buffer_size = buffer_size_ + 1*MB;
// Copy the data.
int pc_delta = desc.buffer - buffer_;
int rc_delta = (desc.buffer + desc.buffer_size) - (buffer_ + buffer_size_);
- OS::MemMove(desc.buffer, buffer_, desc.instr_size);
- OS::MemMove(reloc_info_writer.pos() + rc_delta,
- reloc_info_writer.pos(), desc.reloc_size);
+ MemMove(desc.buffer, buffer_, desc.instr_size);
+ MemMove(reloc_info_writer.pos() + rc_delta, reloc_info_writer.pos(),
+ desc.reloc_size);
// Switch buffers.
DeleteArray(buffer_);
// Relocate pending relocation entries.
for (int i = 0; i < num_pending_32_bit_reloc_info_; i++) {
RelocInfo& rinfo = pending_32_bit_reloc_info_[i];
- ASSERT(rinfo.rmode() != RelocInfo::COMMENT &&
+ DCHECK(rinfo.rmode() != RelocInfo::COMMENT &&
rinfo.rmode() != RelocInfo::POSITION);
if (rinfo.rmode() != RelocInfo::JS_RETURN) {
rinfo.set_pc(rinfo.pc() + pc_delta);
}
for (int i = 0; i < num_pending_64_bit_reloc_info_; i++) {
RelocInfo& rinfo = pending_64_bit_reloc_info_[i];
- ASSERT(rinfo.rmode() == RelocInfo::NONE64);
+ DCHECK(rinfo.rmode() == RelocInfo::NONE64);
rinfo.set_pc(rinfo.pc() + pc_delta);
}
constant_pool_builder_.Relocate(pc_delta);
// No relocation info should be pending while using db. db is used
// to write pure data with no pointers and the constant pool should
// be emitted before using db.
- ASSERT(num_pending_32_bit_reloc_info_ == 0);
- ASSERT(num_pending_64_bit_reloc_info_ == 0);
+ DCHECK(num_pending_32_bit_reloc_info_ == 0);
+ DCHECK(num_pending_64_bit_reloc_info_ == 0);
CheckBuffer();
*reinterpret_cast<uint8_t*>(pc_) = data;
pc_ += sizeof(uint8_t);
// No relocation info should be pending while using dd. dd is used
// to write pure data with no pointers and the constant pool should
// be emitted before using dd.
- ASSERT(num_pending_32_bit_reloc_info_ == 0);
- ASSERT(num_pending_64_bit_reloc_info_ == 0);
+ DCHECK(num_pending_32_bit_reloc_info_ == 0);
+ DCHECK(num_pending_64_bit_reloc_info_ == 0);
CheckBuffer();
*reinterpret_cast<uint32_t*>(pc_) = data;
pc_ += sizeof(uint32_t);
void Assembler::RecordRelocInfo(const RelocInfo& rinfo) {
if (!RelocInfo::IsNone(rinfo.rmode())) {
// Don't record external references unless the heap will be serialized.
- if (rinfo.rmode() == RelocInfo::EXTERNAL_REFERENCE) {
-#ifdef DEBUG
- if (!Serializer::enabled()) {
- Serializer::TooLateToEnableNow();
- }
-#endif
- if (!Serializer::enabled() && !emit_debug_code()) {
- return;
- }
+ if (rinfo.rmode() == RelocInfo::EXTERNAL_REFERENCE &&
+ !serializer_enabled() && !emit_debug_code()) {
+ return;
}
- ASSERT(buffer_space() >= kMaxRelocSize); // too late to grow buffer here
+ DCHECK(buffer_space() >= kMaxRelocSize); // too late to grow buffer here
if (rinfo.rmode() == RelocInfo::CODE_TARGET_WITH_ID) {
RelocInfo reloc_info_with_ast_id(rinfo.pc(),
rinfo.rmode(),
}
-void Assembler::ConstantPoolAddEntry(const RelocInfo& rinfo) {
+ConstantPoolArray::LayoutSection Assembler::ConstantPoolAddEntry(
+ const RelocInfo& rinfo) {
if (FLAG_enable_ool_constant_pool) {
- constant_pool_builder_.AddEntry(this, rinfo);
+ return constant_pool_builder_.AddEntry(this, rinfo);
} else {
if (rinfo.rmode() == RelocInfo::NONE64) {
- ASSERT(num_pending_64_bit_reloc_info_ < kMaxNumPending64RelocInfo);
+ DCHECK(num_pending_64_bit_reloc_info_ < kMaxNumPending64RelocInfo);
if (num_pending_64_bit_reloc_info_ == 0) {
first_const_pool_64_use_ = pc_offset();
}
pending_64_bit_reloc_info_[num_pending_64_bit_reloc_info_++] = rinfo;
} else {
- ASSERT(num_pending_32_bit_reloc_info_ < kMaxNumPending32RelocInfo);
+ DCHECK(num_pending_32_bit_reloc_info_ < kMaxNumPending32RelocInfo);
if (num_pending_32_bit_reloc_info_ == 0) {
first_const_pool_32_use_ = pc_offset();
}
// Make sure the constant pool is not emitted in place of the next
// instruction for which we just recorded relocation info.
BlockConstPoolFor(1);
+ return ConstantPoolArray::SMALL_SECTION;
}
}
void Assembler::BlockConstPoolFor(int instructions) {
if (FLAG_enable_ool_constant_pool) {
// Should be a no-op if using an out-of-line constant pool.
- ASSERT(num_pending_32_bit_reloc_info_ == 0);
- ASSERT(num_pending_64_bit_reloc_info_ == 0);
+ DCHECK(num_pending_32_bit_reloc_info_ == 0);
+ DCHECK(num_pending_64_bit_reloc_info_ == 0);
return;
}
// Max pool start (if we need a jump and an alignment).
#ifdef DEBUG
int start = pc_limit + kInstrSize + 2 * kPointerSize;
- ASSERT((num_pending_32_bit_reloc_info_ == 0) ||
+ DCHECK((num_pending_32_bit_reloc_info_ == 0) ||
(start - first_const_pool_32_use_ +
num_pending_64_bit_reloc_info_ * kDoubleSize < kMaxDistToIntPool));
- ASSERT((num_pending_64_bit_reloc_info_ == 0) ||
+ DCHECK((num_pending_64_bit_reloc_info_ == 0) ||
(start - first_const_pool_64_use_ < kMaxDistToFPPool));
#endif
no_const_pool_before_ = pc_limit;
void Assembler::CheckConstPool(bool force_emit, bool require_jump) {
if (FLAG_enable_ool_constant_pool) {
// Should be a no-op if using an out-of-line constant pool.
- ASSERT(num_pending_32_bit_reloc_info_ == 0);
- ASSERT(num_pending_64_bit_reloc_info_ == 0);
+ DCHECK(num_pending_32_bit_reloc_info_ == 0);
+ DCHECK(num_pending_64_bit_reloc_info_ == 0);
return;
}
// BlockConstPoolScope.
if (is_const_pool_blocked()) {
// Something is wrong if emission is forced and blocked at the same time.
- ASSERT(!force_emit);
+ DCHECK(!force_emit);
return;
}
// * the instruction doesn't require a jump after itself to jump over the
// constant pool, and we're getting close to running out of range.
if (!force_emit) {
- ASSERT((first_const_pool_32_use_ >= 0) || (first_const_pool_64_use_ >= 0));
+ DCHECK((first_const_pool_32_use_ >= 0) || (first_const_pool_64_use_ >= 0));
bool need_emit = false;
if (has_fp_values) {
int dist64 = pc_offset() +
for (int i = 0; i < num_pending_64_bit_reloc_info_; i++) {
RelocInfo& rinfo = pending_64_bit_reloc_info_[i];
- ASSERT(!((uintptr_t)pc_ & 0x7)); // Check 64-bit alignment.
+ DCHECK(!((uintptr_t)pc_ & 0x7)); // Check 64-bit alignment.
Instr instr = instr_at(rinfo.pc());
// Instruction to patch must be 'vldr rd, [pc, #offset]' with offset == 0.
- ASSERT((IsVldrDPcImmediateOffset(instr) &&
+ DCHECK((IsVldrDPcImmediateOffset(instr) &&
GetVldrDRegisterImmediateOffset(instr) == 0));
int delta = pc_ - rinfo.pc() - kPcLoadDelta;
- ASSERT(is_uint10(delta));
+ DCHECK(is_uint10(delta));
bool found = false;
uint64_t value = rinfo.raw_data64();
RelocInfo& rinfo2 = pending_64_bit_reloc_info_[j];
if (value == rinfo2.raw_data64()) {
found = true;
- ASSERT(rinfo2.rmode() == RelocInfo::NONE64);
+ DCHECK(rinfo2.rmode() == RelocInfo::NONE64);
Instr instr2 = instr_at(rinfo2.pc());
- ASSERT(IsVldrDPcImmediateOffset(instr2));
+ DCHECK(IsVldrDPcImmediateOffset(instr2));
delta = GetVldrDRegisterImmediateOffset(instr2);
delta += rinfo2.pc() - rinfo.pc();
break;
// Emit 32-bit constant pool entries.
for (int i = 0; i < num_pending_32_bit_reloc_info_; i++) {
RelocInfo& rinfo = pending_32_bit_reloc_info_[i];
- ASSERT(rinfo.rmode() != RelocInfo::COMMENT &&
+ DCHECK(rinfo.rmode() != RelocInfo::COMMENT &&
rinfo.rmode() != RelocInfo::POSITION &&
rinfo.rmode() != RelocInfo::STATEMENT_POSITION &&
rinfo.rmode() != RelocInfo::CONST_POOL &&
Instr instr = instr_at(rinfo.pc());
// 64-bit loads shouldn't get here.
- ASSERT(!IsVldrDPcImmediateOffset(instr));
+ DCHECK(!IsVldrDPcImmediateOffset(instr));
if (IsLdrPcImmediateOffset(instr) &&
GetLdrRegisterImmediateOffset(instr) == 0) {
int delta = pc_ - rinfo.pc() - kPcLoadDelta;
- ASSERT(is_uint12(delta));
+ DCHECK(is_uint12(delta));
// 0 is the smallest delta:
// ldr rd, [pc, #0]
// constant pool marker
// data
bool found = false;
- if (!Serializer::enabled() && (rinfo.rmode() >= RelocInfo::CELL)) {
+ if (!serializer_enabled() && rinfo.rmode() >= RelocInfo::CELL) {
for (int j = 0; j < i; j++) {
RelocInfo& rinfo2 = pending_32_bit_reloc_info_[j];
emit(rinfo.data());
}
} else {
- ASSERT(IsMovW(instr));
+ DCHECK(IsMovW(instr));
}
}
}
-MaybeObject* Assembler::AllocateConstantPool(Heap* heap) {
- ASSERT(FLAG_enable_ool_constant_pool);
- return constant_pool_builder_.Allocate(heap);
+Handle<ConstantPoolArray> Assembler::NewConstantPool(Isolate* isolate) {
+ if (!FLAG_enable_ool_constant_pool) {
+ return isolate->factory()->empty_constant_pool_array();
+ }
+ return constant_pool_builder_.New(isolate);
}
void Assembler::PopulateConstantPool(ConstantPoolArray* constant_pool) {
- ASSERT(FLAG_enable_ool_constant_pool);
constant_pool_builder_.Populate(this, constant_pool);
}
ConstantPoolBuilder::ConstantPoolBuilder()
- : entries_(),
- merged_indexes_(),
- count_of_64bit_(0),
- count_of_code_ptr_(0),
- count_of_heap_ptr_(0),
- count_of_32bit_(0) { }
+ : entries_(), current_section_(ConstantPoolArray::SMALL_SECTION) {}
bool ConstantPoolBuilder::IsEmpty() {
}
-bool ConstantPoolBuilder::Is64BitEntry(RelocInfo::Mode rmode) {
- return rmode == RelocInfo::NONE64;
-}
-
-
-bool ConstantPoolBuilder::Is32BitEntry(RelocInfo::Mode rmode) {
- return !RelocInfo::IsGCRelocMode(rmode) && rmode != RelocInfo::NONE64;
-}
-
-
-bool ConstantPoolBuilder::IsCodePtrEntry(RelocInfo::Mode rmode) {
- return RelocInfo::IsCodeTarget(rmode);
-}
-
-
-bool ConstantPoolBuilder::IsHeapPtrEntry(RelocInfo::Mode rmode) {
- return RelocInfo::IsGCRelocMode(rmode) && !RelocInfo::IsCodeTarget(rmode);
+ConstantPoolArray::Type ConstantPoolBuilder::GetConstantPoolType(
+ RelocInfo::Mode rmode) {
+ if (rmode == RelocInfo::NONE64) {
+ return ConstantPoolArray::INT64;
+ } else if (!RelocInfo::IsGCRelocMode(rmode)) {
+ return ConstantPoolArray::INT32;
+ } else if (RelocInfo::IsCodeTarget(rmode)) {
+ return ConstantPoolArray::CODE_PTR;
+ } else {
+ DCHECK(RelocInfo::IsGCRelocMode(rmode) && !RelocInfo::IsCodeTarget(rmode));
+ return ConstantPoolArray::HEAP_PTR;
+ }
}
-void ConstantPoolBuilder::AddEntry(Assembler* assm,
- const RelocInfo& rinfo) {
+ConstantPoolArray::LayoutSection ConstantPoolBuilder::AddEntry(
+ Assembler* assm, const RelocInfo& rinfo) {
RelocInfo::Mode rmode = rinfo.rmode();
- ASSERT(rmode != RelocInfo::COMMENT &&
+ DCHECK(rmode != RelocInfo::COMMENT &&
rmode != RelocInfo::POSITION &&
rmode != RelocInfo::STATEMENT_POSITION &&
rmode != RelocInfo::CONST_POOL);
-
// Try to merge entries which won't be patched.
int merged_index = -1;
+ ConstantPoolArray::LayoutSection entry_section = current_section_;
if (RelocInfo::IsNone(rmode) ||
- (!Serializer::enabled() && (rmode >= RelocInfo::CELL))) {
+ (!assm->serializer_enabled() && (rmode >= RelocInfo::CELL))) {
size_t i;
- std::vector<RelocInfo>::const_iterator it;
+ std::vector<ConstantPoolEntry>::const_iterator it;
for (it = entries_.begin(), i = 0; it != entries_.end(); it++, i++) {
- if (RelocInfo::IsEqual(rinfo, *it)) {
+ if (RelocInfo::IsEqual(rinfo, it->rinfo_)) {
+ // Merge with found entry.
merged_index = i;
+ entry_section = entries_[i].section_;
break;
}
}
}
-
- entries_.push_back(rinfo);
- merged_indexes_.push_back(merged_index);
+ DCHECK(entry_section <= current_section_);
+ entries_.push_back(ConstantPoolEntry(rinfo, entry_section, merged_index));
if (merged_index == -1) {
// Not merged, so update the appropriate count.
- if (Is64BitEntry(rmode)) {
- count_of_64bit_++;
- } else if (Is32BitEntry(rmode)) {
- count_of_32bit_++;
- } else if (IsCodePtrEntry(rmode)) {
- count_of_code_ptr_++;
- } else {
- ASSERT(IsHeapPtrEntry(rmode));
- count_of_heap_ptr_++;
- }
+ number_of_entries_[entry_section].increment(GetConstantPoolType(rmode));
}
- // Check if we still have room for another entry given Arm's ldr and vldr
- // immediate offset range.
- if (!(is_uint12(ConstantPoolArray::SizeFor(count_of_64bit_,
- count_of_code_ptr_,
- count_of_heap_ptr_,
- count_of_32bit_))) &&
- is_uint10(ConstantPoolArray::SizeFor(count_of_64bit_, 0, 0, 0))) {
- assm->set_constant_pool_full();
+ // Check if we still have room for another entry in the small section
+ // given Arm's ldr and vldr immediate offset range.
+ if (current_section_ == ConstantPoolArray::SMALL_SECTION &&
+ !(is_uint12(ConstantPoolArray::SizeFor(*small_entries())) &&
+ is_uint10(ConstantPoolArray::MaxInt64Offset(
+ small_entries()->count_of(ConstantPoolArray::INT64))))) {
+ current_section_ = ConstantPoolArray::EXTENDED_SECTION;
}
+ return entry_section;
}
void ConstantPoolBuilder::Relocate(int pc_delta) {
- for (std::vector<RelocInfo>::iterator rinfo = entries_.begin();
- rinfo != entries_.end(); rinfo++) {
- ASSERT(rinfo->rmode() != RelocInfo::JS_RETURN);
- rinfo->set_pc(rinfo->pc() + pc_delta);
+ for (std::vector<ConstantPoolEntry>::iterator entry = entries_.begin();
+ entry != entries_.end(); entry++) {
+ DCHECK(entry->rinfo_.rmode() != RelocInfo::JS_RETURN);
+ entry->rinfo_.set_pc(entry->rinfo_.pc() + pc_delta);
}
}
-MaybeObject* ConstantPoolBuilder::Allocate(Heap* heap) {
+Handle<ConstantPoolArray> ConstantPoolBuilder::New(Isolate* isolate) {
if (IsEmpty()) {
- return heap->empty_constant_pool_array();
+ return isolate->factory()->empty_constant_pool_array();
+ } else if (extended_entries()->is_empty()) {
+ return isolate->factory()->NewConstantPoolArray(*small_entries());
} else {
- return heap->AllocateConstantPoolArray(count_of_64bit_, count_of_code_ptr_,
- count_of_heap_ptr_, count_of_32bit_);
+ DCHECK(current_section_ == ConstantPoolArray::EXTENDED_SECTION);
+ return isolate->factory()->NewExtendedConstantPoolArray(
+ *small_entries(), *extended_entries());
}
}
void ConstantPoolBuilder::Populate(Assembler* assm,
ConstantPoolArray* constant_pool) {
- ASSERT(constant_pool->count_of_int64_entries() == count_of_64bit_);
- ASSERT(constant_pool->count_of_code_ptr_entries() == count_of_code_ptr_);
- ASSERT(constant_pool->count_of_heap_ptr_entries() == count_of_heap_ptr_);
- ASSERT(constant_pool->count_of_int32_entries() == count_of_32bit_);
- ASSERT(entries_.size() == merged_indexes_.size());
-
- int index_64bit = 0;
- int index_code_ptr = count_of_64bit_;
- int index_heap_ptr = count_of_64bit_ + count_of_code_ptr_;
- int index_32bit = count_of_64bit_ + count_of_code_ptr_ + count_of_heap_ptr_;
-
- size_t i;
- std::vector<RelocInfo>::const_iterator rinfo;
- for (rinfo = entries_.begin(), i = 0; rinfo != entries_.end(); rinfo++, i++) {
- RelocInfo::Mode rmode = rinfo->rmode();
+ DCHECK_EQ(extended_entries()->is_empty(),
+ !constant_pool->is_extended_layout());
+ DCHECK(small_entries()->equals(ConstantPoolArray::NumberOfEntries(
+ constant_pool, ConstantPoolArray::SMALL_SECTION)));
+ if (constant_pool->is_extended_layout()) {
+ DCHECK(extended_entries()->equals(ConstantPoolArray::NumberOfEntries(
+ constant_pool, ConstantPoolArray::EXTENDED_SECTION)));
+ }
+
+ // Set up initial offsets.
+ int offsets[ConstantPoolArray::NUMBER_OF_LAYOUT_SECTIONS]
+ [ConstantPoolArray::NUMBER_OF_TYPES];
+ for (int section = 0; section <= constant_pool->final_section(); section++) {
+ int section_start = (section == ConstantPoolArray::EXTENDED_SECTION)
+ ? small_entries()->total_count()
+ : 0;
+ for (int i = 0; i < ConstantPoolArray::NUMBER_OF_TYPES; i++) {
+ ConstantPoolArray::Type type = static_cast<ConstantPoolArray::Type>(i);
+ if (number_of_entries_[section].count_of(type) != 0) {
+ offsets[section][type] = constant_pool->OffsetOfElementAt(
+ number_of_entries_[section].base_of(type) + section_start);
+ }
+ }
+ }
+
+ for (std::vector<ConstantPoolEntry>::iterator entry = entries_.begin();
+ entry != entries_.end(); entry++) {
+ RelocInfo rinfo = entry->rinfo_;
+ RelocInfo::Mode rmode = entry->rinfo_.rmode();
+ ConstantPoolArray::Type type = GetConstantPoolType(rmode);
// Update constant pool if necessary and get the entry's offset.
int offset;
- if (merged_indexes_[i] == -1) {
- if (Is64BitEntry(rmode)) {
- offset = constant_pool->OffsetOfElementAt(index_64bit) - kHeapObjectTag;
- constant_pool->set(index_64bit++, rinfo->data64());
- } else if (Is32BitEntry(rmode)) {
- offset = constant_pool->OffsetOfElementAt(index_32bit) - kHeapObjectTag;
- constant_pool->set(index_32bit++, static_cast<int32_t>(rinfo->data()));
- } else if (IsCodePtrEntry(rmode)) {
- offset = constant_pool->OffsetOfElementAt(index_code_ptr) -
- kHeapObjectTag;
- constant_pool->set(index_code_ptr++,
- reinterpret_cast<Object *>(rinfo->data()));
+ if (entry->merged_index_ == -1) {
+ offset = offsets[entry->section_][type];
+ offsets[entry->section_][type] += ConstantPoolArray::entry_size(type);
+ if (type == ConstantPoolArray::INT64) {
+ constant_pool->set_at_offset(offset, rinfo.data64());
+ } else if (type == ConstantPoolArray::INT32) {
+ constant_pool->set_at_offset(offset,
+ static_cast<int32_t>(rinfo.data()));
+ } else if (type == ConstantPoolArray::CODE_PTR) {
+ constant_pool->set_at_offset(offset,
+ reinterpret_cast<Address>(rinfo.data()));
} else {
- ASSERT(IsHeapPtrEntry(rmode));
- offset = constant_pool->OffsetOfElementAt(index_heap_ptr) -
- kHeapObjectTag;
- constant_pool->set(index_heap_ptr++,
- reinterpret_cast<Object *>(rinfo->data()));
+ DCHECK(type == ConstantPoolArray::HEAP_PTR);
+ constant_pool->set_at_offset(offset,
+ reinterpret_cast<Object*>(rinfo.data()));
}
- merged_indexes_[i] = offset; // Stash offset for merged entries.
+ offset -= kHeapObjectTag;
+ entry->merged_index_ = offset; // Stash offset for merged entries.
} else {
- size_t merged_index = static_cast<size_t>(merged_indexes_[i]);
- ASSERT(merged_index < merged_indexes_.size() && merged_index < i);
- offset = merged_indexes_[merged_index];
+ DCHECK(entry->merged_index_ < (entry - entries_.begin()));
+ offset = entries_[entry->merged_index_].merged_index_;
}
// Patch vldr/ldr instruction with correct offset.
- Instr instr = assm->instr_at(rinfo->pc());
- if (Is64BitEntry(rmode)) {
+ Instr instr = assm->instr_at(rinfo.pc());
+ if (entry->section_ == ConstantPoolArray::EXTENDED_SECTION) {
+ if (CpuFeatures::IsSupported(ARMv7)) {
+ // Instructions to patch must be 'movw rd, [#0]' and 'movt rd, [#0].
+ Instr next_instr = assm->instr_at(rinfo.pc() + Assembler::kInstrSize);
+ DCHECK((Assembler::IsMovW(instr) &&
+ Instruction::ImmedMovwMovtValue(instr) == 0));
+ DCHECK((Assembler::IsMovT(next_instr) &&
+ Instruction::ImmedMovwMovtValue(next_instr) == 0));
+ assm->instr_at_put(
+ rinfo.pc(), Assembler::PatchMovwImmediate(instr, offset & 0xffff));
+ assm->instr_at_put(
+ rinfo.pc() + Assembler::kInstrSize,
+ Assembler::PatchMovwImmediate(next_instr, offset >> 16));
+ } else {
+ // Instructions to patch must be 'mov rd, [#0]' and 'orr rd, rd, [#0].
+ Instr instr_2 = assm->instr_at(rinfo.pc() + Assembler::kInstrSize);
+ Instr instr_3 = assm->instr_at(rinfo.pc() + 2 * Assembler::kInstrSize);
+ Instr instr_4 = assm->instr_at(rinfo.pc() + 3 * Assembler::kInstrSize);
+ DCHECK((Assembler::IsMovImmed(instr) &&
+ Instruction::Immed8Value(instr) == 0));
+ DCHECK((Assembler::IsOrrImmed(instr_2) &&
+ Instruction::Immed8Value(instr_2) == 0) &&
+ Assembler::GetRn(instr_2).is(Assembler::GetRd(instr_2)));
+ DCHECK((Assembler::IsOrrImmed(instr_3) &&
+ Instruction::Immed8Value(instr_3) == 0) &&
+ Assembler::GetRn(instr_3).is(Assembler::GetRd(instr_3)));
+ DCHECK((Assembler::IsOrrImmed(instr_4) &&
+ Instruction::Immed8Value(instr_4) == 0) &&
+ Assembler::GetRn(instr_4).is(Assembler::GetRd(instr_4)));
+ assm->instr_at_put(
+ rinfo.pc(), Assembler::PatchShiftImm(instr, (offset & kImm8Mask)));
+ assm->instr_at_put(
+ rinfo.pc() + Assembler::kInstrSize,
+ Assembler::PatchShiftImm(instr_2, (offset & (kImm8Mask << 8))));
+ assm->instr_at_put(
+ rinfo.pc() + 2 * Assembler::kInstrSize,
+ Assembler::PatchShiftImm(instr_3, (offset & (kImm8Mask << 16))));
+ assm->instr_at_put(
+ rinfo.pc() + 3 * Assembler::kInstrSize,
+ Assembler::PatchShiftImm(instr_4, (offset & (kImm8Mask << 24))));
+ }
+ } else if (type == ConstantPoolArray::INT64) {
// Instruction to patch must be 'vldr rd, [pp, #0]'.
- ASSERT((Assembler::IsVldrDPpImmediateOffset(instr) &&
+ DCHECK((Assembler::IsVldrDPpImmediateOffset(instr) &&
Assembler::GetVldrDRegisterImmediateOffset(instr) == 0));
- ASSERT(is_uint10(offset));
- assm->instr_at_put(rinfo->pc(),
- Assembler::SetVldrDRegisterImmediateOffset(instr, offset));
+ DCHECK(is_uint10(offset));
+ assm->instr_at_put(rinfo.pc(), Assembler::SetVldrDRegisterImmediateOffset(
+ instr, offset));
} else {
// Instruction to patch must be 'ldr rd, [pp, #0]'.
- ASSERT((Assembler::IsLdrPpImmediateOffset(instr) &&
+ DCHECK((Assembler::IsLdrPpImmediateOffset(instr) &&
Assembler::GetLdrRegisterImmediateOffset(instr) == 0));
- ASSERT(is_uint12(offset));
- assm->instr_at_put(rinfo->pc(),
- Assembler::SetLdrRegisterImmediateOffset(instr, offset));
+ DCHECK(is_uint12(offset));
+ assm->instr_at_put(
+ rinfo.pc(), Assembler::SetLdrRegisterImmediateOffset(instr, offset));
}
}
-
- ASSERT((index_64bit == count_of_64bit_) &&
- (index_code_ptr == (index_64bit + count_of_code_ptr_)) &&
- (index_heap_ptr == (index_code_ptr + count_of_heap_ptr_)) &&
- (index_32bit == (index_heap_ptr + count_of_32bit_)));
}
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