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macro-assembler-s390.cc
4459 lines (3906 loc) Β· 131 KB
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macro-assembler-s390.cc
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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <assert.h> // For assert
#include <limits.h> // For LONG_MIN, LONG_MAX.
#if V8_TARGET_ARCH_S390
#include "src/base/bits.h"
#include "src/base/division-by-constant.h"
#include "src/codegen/callable.h"
#include "src/codegen/code-factory.h"
#include "src/codegen/external-reference-table.h"
#include "src/codegen/macro-assembler.h"
#include "src/codegen/register-configuration.h"
#include "src/debug/debug.h"
#include "src/execution/frames-inl.h"
#include "src/heap/heap-inl.h" // For MemoryChunk.
#include "src/init/bootstrapper.h"
#include "src/logging/counters.h"
#include "src/objects/smi.h"
#include "src/runtime/runtime.h"
#include "src/snapshot/embedded/embedded-data.h"
#include "src/snapshot/snapshot.h"
#include "src/wasm/wasm-code-manager.h"
// Satisfy cpplint check, but don't include platform-specific header. It is
// included recursively via macro-assembler.h.
#if 0
#include "src/codegen/s390/macro-assembler-s390.h"
#endif
namespace v8 {
namespace internal {
int TurboAssembler::RequiredStackSizeForCallerSaved(SaveFPRegsMode fp_mode,
Register exclusion1,
Register exclusion2,
Register exclusion3) const {
int bytes = 0;
RegList exclusions = 0;
if (exclusion1 != no_reg) {
exclusions |= exclusion1.bit();
if (exclusion2 != no_reg) {
exclusions |= exclusion2.bit();
if (exclusion3 != no_reg) {
exclusions |= exclusion3.bit();
}
}
}
RegList list = kJSCallerSaved & ~exclusions;
bytes += NumRegs(list) * kSystemPointerSize;
if (fp_mode == kSaveFPRegs) {
bytes += NumRegs(kCallerSavedDoubles) * kDoubleSize;
}
return bytes;
}
int TurboAssembler::PushCallerSaved(SaveFPRegsMode fp_mode, Register exclusion1,
Register exclusion2, Register exclusion3) {
int bytes = 0;
RegList exclusions = 0;
if (exclusion1 != no_reg) {
exclusions |= exclusion1.bit();
if (exclusion2 != no_reg) {
exclusions |= exclusion2.bit();
if (exclusion3 != no_reg) {
exclusions |= exclusion3.bit();
}
}
}
RegList list = kJSCallerSaved & ~exclusions;
MultiPush(list);
bytes += NumRegs(list) * kSystemPointerSize;
if (fp_mode == kSaveFPRegs) {
MultiPushDoubles(kCallerSavedDoubles);
bytes += NumRegs(kCallerSavedDoubles) * kDoubleSize;
}
return bytes;
}
int TurboAssembler::PopCallerSaved(SaveFPRegsMode fp_mode, Register exclusion1,
Register exclusion2, Register exclusion3) {
int bytes = 0;
if (fp_mode == kSaveFPRegs) {
MultiPopDoubles(kCallerSavedDoubles);
bytes += NumRegs(kCallerSavedDoubles) * kDoubleSize;
}
RegList exclusions = 0;
if (exclusion1 != no_reg) {
exclusions |= exclusion1.bit();
if (exclusion2 != no_reg) {
exclusions |= exclusion2.bit();
if (exclusion3 != no_reg) {
exclusions |= exclusion3.bit();
}
}
}
RegList list = kJSCallerSaved & ~exclusions;
MultiPop(list);
bytes += NumRegs(list) * kSystemPointerSize;
return bytes;
}
void TurboAssembler::LoadFromConstantsTable(Register destination,
int constant_index) {
DCHECK(RootsTable::IsImmortalImmovable(RootIndex::kBuiltinsConstantsTable));
const uint32_t offset = FixedArray::kHeaderSize +
constant_index * kSystemPointerSize - kHeapObjectTag;
CHECK(is_uint19(offset));
DCHECK_NE(destination, r0);
LoadRoot(destination, RootIndex::kBuiltinsConstantsTable);
LoadP(destination, MemOperand(destination, offset), r1);
}
void TurboAssembler::LoadRootRelative(Register destination, int32_t offset) {
LoadP(destination, MemOperand(kRootRegister, offset));
}
void TurboAssembler::LoadRootRegisterOffset(Register destination,
intptr_t offset) {
if (offset == 0) {
LoadRR(destination, kRootRegister);
} else if (is_uint12(offset)) {
la(destination, MemOperand(kRootRegister, offset));
} else {
DCHECK(is_int20(offset));
lay(destination, MemOperand(kRootRegister, offset));
}
}
void TurboAssembler::Jump(Register target, Condition cond) { b(cond, target); }
void TurboAssembler::Jump(intptr_t target, RelocInfo::Mode rmode,
Condition cond) {
Label skip;
if (cond != al) b(NegateCondition(cond), &skip);
DCHECK(rmode == RelocInfo::CODE_TARGET || rmode == RelocInfo::RUNTIME_ENTRY);
mov(ip, Operand(target, rmode));
b(ip);
bind(&skip);
}
void TurboAssembler::Jump(Address target, RelocInfo::Mode rmode,
Condition cond) {
DCHECK(!RelocInfo::IsCodeTarget(rmode));
Jump(static_cast<intptr_t>(target), rmode, cond);
}
void TurboAssembler::Jump(Handle<Code> code, RelocInfo::Mode rmode,
Condition cond) {
DCHECK(RelocInfo::IsCodeTarget(rmode));
DCHECK_IMPLIES(options().isolate_independent_code,
Builtins::IsIsolateIndependentBuiltin(*code));
int builtin_index = Builtins::kNoBuiltinId;
bool target_is_isolate_independent_builtin =
isolate()->builtins()->IsBuiltinHandle(code, &builtin_index) &&
Builtins::IsIsolateIndependent(builtin_index);
if (options().inline_offheap_trampolines &&
target_is_isolate_independent_builtin) {
Label skip;
if (cond != al) {
b(NegateCondition(cond), &skip, Label::kNear);
}
// Inline the trampoline.
RecordCommentForOffHeapTrampoline(builtin_index);
CHECK_NE(builtin_index, Builtins::kNoBuiltinId);
EmbeddedData d = EmbeddedData::FromBlob();
Address entry = d.InstructionStartOfBuiltin(builtin_index);
mov(ip, Operand(entry, RelocInfo::OFF_HEAP_TARGET));
b(ip);
bind(&skip);
return;
}
jump(code, RelocInfo::RELATIVE_CODE_TARGET, cond);
}
void TurboAssembler::Jump(const ExternalReference& reference) {
UseScratchRegisterScope temps(this);
Register scratch = temps.Acquire();
Move(scratch, reference);
Jump(scratch);
}
void TurboAssembler::Call(Register target) {
// Branch to target via indirect branch
basr(r14, target);
}
void MacroAssembler::CallJSEntry(Register target) {
DCHECK(target == r4);
Call(target);
}
int MacroAssembler::CallSizeNotPredictableCodeSize(Address target,
RelocInfo::Mode rmode,
Condition cond) {
// S390 Assembler::move sequence is IILF / IIHF
int size;
#if V8_TARGET_ARCH_S390X
size = 14; // IILF + IIHF + BASR
#else
size = 8; // IILF + BASR
#endif
return size;
}
void TurboAssembler::Call(Address target, RelocInfo::Mode rmode,
Condition cond) {
DCHECK(cond == al);
mov(ip, Operand(target, rmode));
basr(r14, ip);
}
void TurboAssembler::Call(Handle<Code> code, RelocInfo::Mode rmode,
Condition cond) {
DCHECK(RelocInfo::IsCodeTarget(rmode) && cond == al);
DCHECK_IMPLIES(options().isolate_independent_code,
Builtins::IsIsolateIndependentBuiltin(*code));
int builtin_index = Builtins::kNoBuiltinId;
bool target_is_isolate_independent_builtin =
isolate()->builtins()->IsBuiltinHandle(code, &builtin_index) &&
Builtins::IsIsolateIndependent(builtin_index);
if (options().inline_offheap_trampolines &&
target_is_isolate_independent_builtin) {
// Inline the trampoline.
RecordCommentForOffHeapTrampoline(builtin_index);
CHECK_NE(builtin_index, Builtins::kNoBuiltinId);
EmbeddedData d = EmbeddedData::FromBlob();
Address entry = d.InstructionStartOfBuiltin(builtin_index);
mov(ip, Operand(entry, RelocInfo::OFF_HEAP_TARGET));
Call(ip);
return;
}
call(code, rmode);
}
void TurboAssembler::Drop(int count) {
if (count > 0) {
int total = count * kSystemPointerSize;
if (is_uint12(total)) {
la(sp, MemOperand(sp, total));
} else if (is_int20(total)) {
lay(sp, MemOperand(sp, total));
} else {
AddP(sp, Operand(total));
}
}
}
void TurboAssembler::Drop(Register count, Register scratch) {
ShiftLeftP(scratch, count, Operand(kSystemPointerSizeLog2));
AddP(sp, sp, scratch);
}
void TurboAssembler::Call(Label* target) { b(r14, target); }
void TurboAssembler::Push(Handle<HeapObject> handle) {
mov(r0, Operand(handle));
push(r0);
}
void TurboAssembler::Push(Smi smi) {
mov(r0, Operand(smi));
push(r0);
}
void TurboAssembler::Move(Register dst, Handle<HeapObject> value) {
if (FLAG_embedded_builtins) {
if (root_array_available_ && options().isolate_independent_code) {
IndirectLoadConstant(dst, value);
return;
}
}
mov(dst, Operand(value));
}
void TurboAssembler::Move(Register dst, ExternalReference reference) {
if (FLAG_embedded_builtins) {
if (root_array_available_ && options().isolate_independent_code) {
IndirectLoadExternalReference(dst, reference);
return;
}
}
mov(dst, Operand(reference));
}
void TurboAssembler::Move(Register dst, Register src, Condition cond) {
if (dst != src) {
if (cond == al) {
LoadRR(dst, src);
} else {
LoadOnConditionP(cond, dst, src);
}
}
}
void TurboAssembler::Move(DoubleRegister dst, DoubleRegister src) {
if (dst != src) {
ldr(dst, src);
}
}
// Wrapper around Assembler::mvc (SS-a format)
void TurboAssembler::MoveChar(const MemOperand& opnd1, const MemOperand& opnd2,
const Operand& length) {
mvc(opnd1, opnd2, Operand(static_cast<intptr_t>(length.immediate() - 1)));
}
// Wrapper around Assembler::clc (SS-a format)
void TurboAssembler::CompareLogicalChar(const MemOperand& opnd1,
const MemOperand& opnd2,
const Operand& length) {
clc(opnd1, opnd2, Operand(static_cast<intptr_t>(length.immediate() - 1)));
}
// Wrapper around Assembler::xc (SS-a format)
void TurboAssembler::ExclusiveOrChar(const MemOperand& opnd1,
const MemOperand& opnd2,
const Operand& length) {
xc(opnd1, opnd2, Operand(static_cast<intptr_t>(length.immediate() - 1)));
}
// Wrapper around Assembler::risbg(n) (RIE-f)
void TurboAssembler::RotateInsertSelectBits(Register dst, Register src,
const Operand& startBit,
const Operand& endBit,
const Operand& shiftAmt,
bool zeroBits) {
if (zeroBits)
// High tag the top bit of I4/EndBit to zero out any unselected bits
risbg(dst, src, startBit,
Operand(static_cast<intptr_t>(endBit.immediate() | 0x80)), shiftAmt);
else
risbg(dst, src, startBit, endBit, shiftAmt);
}
void TurboAssembler::BranchRelativeOnIdxHighP(Register dst, Register inc,
Label* L) {
#if V8_TARGET_ARCH_S390X
brxhg(dst, inc, L);
#else
brxh(dst, inc, L);
#endif // V8_TARGET_ARCH_S390X
}
void TurboAssembler::MultiPush(RegList regs, Register location) {
int16_t num_to_push = base::bits::CountPopulation(regs);
int16_t stack_offset = num_to_push * kSystemPointerSize;
SubP(location, location, Operand(stack_offset));
for (int16_t i = Register::kNumRegisters - 1; i >= 0; i--) {
if ((regs & (1 << i)) != 0) {
stack_offset -= kSystemPointerSize;
StoreP(ToRegister(i), MemOperand(location, stack_offset));
}
}
}
void TurboAssembler::MultiPop(RegList regs, Register location) {
int16_t stack_offset = 0;
for (int16_t i = 0; i < Register::kNumRegisters; i++) {
if ((regs & (1 << i)) != 0) {
LoadP(ToRegister(i), MemOperand(location, stack_offset));
stack_offset += kSystemPointerSize;
}
}
AddP(location, location, Operand(stack_offset));
}
void TurboAssembler::MultiPushDoubles(RegList dregs, Register location) {
int16_t num_to_push = base::bits::CountPopulation(dregs);
int16_t stack_offset = num_to_push * kDoubleSize;
SubP(location, location, Operand(stack_offset));
for (int16_t i = DoubleRegister::kNumRegisters - 1; i >= 0; i--) {
if ((dregs & (1 << i)) != 0) {
DoubleRegister dreg = DoubleRegister::from_code(i);
stack_offset -= kDoubleSize;
StoreDouble(dreg, MemOperand(location, stack_offset));
}
}
}
void TurboAssembler::MultiPopDoubles(RegList dregs, Register location) {
int16_t stack_offset = 0;
for (int16_t i = 0; i < DoubleRegister::kNumRegisters; i++) {
if ((dregs & (1 << i)) != 0) {
DoubleRegister dreg = DoubleRegister::from_code(i);
LoadDouble(dreg, MemOperand(location, stack_offset));
stack_offset += kDoubleSize;
}
}
AddP(location, location, Operand(stack_offset));
}
void TurboAssembler::LoadRoot(Register destination, RootIndex index,
Condition) {
LoadP(destination,
MemOperand(kRootRegister, RootRegisterOffsetForRootIndex(index)), r0);
}
void MacroAssembler::RecordWriteField(Register object, int offset,
Register value, Register dst,
LinkRegisterStatus lr_status,
SaveFPRegsMode save_fp,
RememberedSetAction remembered_set_action,
SmiCheck smi_check) {
// First, check if a write barrier is even needed. The tests below
// catch stores of Smis.
Label done;
// Skip barrier if writing a smi.
if (smi_check == INLINE_SMI_CHECK) {
JumpIfSmi(value, &done);
}
// Although the object register is tagged, the offset is relative to the start
// of the object, so so offset must be a multiple of kSystemPointerSize.
DCHECK(IsAligned(offset, kSystemPointerSize));
lay(dst, MemOperand(object, offset - kHeapObjectTag));
if (emit_debug_code()) {
Label ok;
AndP(r0, dst, Operand(kSystemPointerSize - 1));
beq(&ok, Label::kNear);
stop();
bind(&ok);
}
RecordWrite(object, dst, value, lr_status, save_fp, remembered_set_action,
OMIT_SMI_CHECK);
bind(&done);
// Clobber clobbered input registers when running with the debug-code flag
// turned on to provoke errors.
if (emit_debug_code()) {
mov(value, Operand(bit_cast<intptr_t>(kZapValue + 4)));
mov(dst, Operand(bit_cast<intptr_t>(kZapValue + 8)));
}
}
void TurboAssembler::SaveRegisters(RegList registers) {
DCHECK_GT(NumRegs(registers), 0);
RegList regs = 0;
for (int i = 0; i < Register::kNumRegisters; ++i) {
if ((registers >> i) & 1u) {
regs |= Register::from_code(i).bit();
}
}
MultiPush(regs);
}
void TurboAssembler::RestoreRegisters(RegList registers) {
DCHECK_GT(NumRegs(registers), 0);
RegList regs = 0;
for (int i = 0; i < Register::kNumRegisters; ++i) {
if ((registers >> i) & 1u) {
regs |= Register::from_code(i).bit();
}
}
MultiPop(regs);
}
void TurboAssembler::CallEphemeronKeyBarrier(Register object, Register address,
SaveFPRegsMode fp_mode) {
EphemeronKeyBarrierDescriptor descriptor;
RegList registers = descriptor.allocatable_registers();
SaveRegisters(registers);
Register object_parameter(
descriptor.GetRegisterParameter(EphemeronKeyBarrierDescriptor::kObject));
Register slot_parameter(descriptor.GetRegisterParameter(
EphemeronKeyBarrierDescriptor::kSlotAddress));
Register fp_mode_parameter(
descriptor.GetRegisterParameter(EphemeronKeyBarrierDescriptor::kFPMode));
Push(object);
Push(address);
Pop(slot_parameter);
Pop(object_parameter);
Move(fp_mode_parameter, Smi::FromEnum(fp_mode));
Call(isolate()->builtins()->builtin_handle(Builtins::kEphemeronKeyBarrier),
RelocInfo::CODE_TARGET);
RestoreRegisters(registers);
}
void TurboAssembler::CallRecordWriteStub(
Register object, Register address,
RememberedSetAction remembered_set_action, SaveFPRegsMode fp_mode) {
CallRecordWriteStub(
object, address, remembered_set_action, fp_mode,
isolate()->builtins()->builtin_handle(Builtins::kRecordWrite),
kNullAddress);
}
void TurboAssembler::CallRecordWriteStub(
Register object, Register address,
RememberedSetAction remembered_set_action, SaveFPRegsMode fp_mode,
Address wasm_target) {
CallRecordWriteStub(object, address, remembered_set_action, fp_mode,
Handle<Code>::null(), wasm_target);
}
void TurboAssembler::CallRecordWriteStub(
Register object, Register address,
RememberedSetAction remembered_set_action, SaveFPRegsMode fp_mode,
Handle<Code> code_target, Address wasm_target) {
DCHECK_NE(code_target.is_null(), wasm_target == kNullAddress);
// TODO(albertnetymk): For now we ignore remembered_set_action and fp_mode,
// i.e. always emit remember set and save FP registers in RecordWriteStub. If
// large performance regression is observed, we should use these values to
// avoid unnecessary work.
RecordWriteDescriptor descriptor;
RegList registers = descriptor.allocatable_registers();
SaveRegisters(registers);
Register object_parameter(
descriptor.GetRegisterParameter(RecordWriteDescriptor::kObject));
Register slot_parameter(
descriptor.GetRegisterParameter(RecordWriteDescriptor::kSlot));
Register remembered_set_parameter(
descriptor.GetRegisterParameter(RecordWriteDescriptor::kRememberedSet));
Register fp_mode_parameter(
descriptor.GetRegisterParameter(RecordWriteDescriptor::kFPMode));
Push(object);
Push(address);
Pop(slot_parameter);
Pop(object_parameter);
Move(remembered_set_parameter, Smi::FromEnum(remembered_set_action));
Move(fp_mode_parameter, Smi::FromEnum(fp_mode));
if (code_target.is_null()) {
Call(wasm_target, RelocInfo::WASM_STUB_CALL);
} else {
Call(code_target, RelocInfo::CODE_TARGET);
}
RestoreRegisters(registers);
}
// Will clobber 4 registers: object, address, scratch, ip. The
// register 'object' contains a heap object pointer. The heap object
// tag is shifted away.
void MacroAssembler::RecordWrite(Register object, Register address,
Register value, LinkRegisterStatus lr_status,
SaveFPRegsMode fp_mode,
RememberedSetAction remembered_set_action,
SmiCheck smi_check) {
DCHECK(object != value);
if (emit_debug_code()) {
CmpP(value, MemOperand(address));
Check(eq, AbortReason::kWrongAddressOrValuePassedToRecordWrite);
}
if ((remembered_set_action == OMIT_REMEMBERED_SET &&
!FLAG_incremental_marking) ||
FLAG_disable_write_barriers) {
return;
}
// First, check if a write barrier is even needed. The tests below
// catch stores of smis and stores into the young generation.
Label done;
if (smi_check == INLINE_SMI_CHECK) {
JumpIfSmi(value, &done);
}
CheckPageFlag(value,
value, // Used as scratch.
MemoryChunk::kPointersToHereAreInterestingMask, eq, &done);
CheckPageFlag(object,
value, // Used as scratch.
MemoryChunk::kPointersFromHereAreInterestingMask, eq, &done);
// Record the actual write.
if (lr_status == kLRHasNotBeenSaved) {
push(r14);
}
CallRecordWriteStub(object, address, remembered_set_action, fp_mode);
if (lr_status == kLRHasNotBeenSaved) {
pop(r14);
}
bind(&done);
// Clobber clobbered registers when running with the debug-code flag
// turned on to provoke errors.
if (emit_debug_code()) {
mov(address, Operand(bit_cast<intptr_t>(kZapValue + 12)));
mov(value, Operand(bit_cast<intptr_t>(kZapValue + 16)));
}
}
void TurboAssembler::PushCommonFrame(Register marker_reg) {
int fp_delta = 0;
CleanseP(r14);
if (marker_reg.is_valid()) {
Push(r14, fp, marker_reg);
fp_delta = 1;
} else {
Push(r14, fp);
fp_delta = 0;
}
la(fp, MemOperand(sp, fp_delta * kSystemPointerSize));
}
void TurboAssembler::PopCommonFrame(Register marker_reg) {
if (marker_reg.is_valid()) {
Pop(r14, fp, marker_reg);
} else {
Pop(r14, fp);
}
}
void TurboAssembler::PushStandardFrame(Register function_reg) {
int fp_delta = 0;
CleanseP(r14);
if (function_reg.is_valid()) {
Push(r14, fp, cp, function_reg);
fp_delta = 2;
} else {
Push(r14, fp, cp);
fp_delta = 1;
}
la(fp, MemOperand(sp, fp_delta * kSystemPointerSize));
}
void TurboAssembler::RestoreFrameStateForTailCall() {
// if (FLAG_enable_embedded_constant_pool) {
// LoadP(kConstantPoolRegister,
// MemOperand(fp, StandardFrameConstants::kConstantPoolOffset));
// set_constant_pool_available(false);
// }
DCHECK(!FLAG_enable_embedded_constant_pool);
LoadP(r14, MemOperand(fp, StandardFrameConstants::kCallerPCOffset));
LoadP(fp, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
}
int MacroAssembler::SafepointRegisterStackIndex(int reg_code) {
// The registers are pushed starting with the highest encoding,
// which means that lowest encodings are closest to the stack pointer.
RegList regs = kSafepointSavedRegisters;
int index = 0;
DCHECK(reg_code >= 0 && reg_code < kNumRegisters);
for (int16_t i = 0; i < reg_code; i++) {
if ((regs & (1 << i)) != 0) {
index++;
}
}
return index;
}
void TurboAssembler::CanonicalizeNaN(const DoubleRegister dst,
const DoubleRegister src) {
// Turn potential sNaN into qNaN
if (dst != src) ldr(dst, src);
lzdr(kDoubleRegZero);
sdbr(dst, kDoubleRegZero);
}
void TurboAssembler::ConvertIntToDouble(DoubleRegister dst, Register src) {
cdfbr(dst, src);
}
void TurboAssembler::ConvertUnsignedIntToDouble(DoubleRegister dst,
Register src) {
if (CpuFeatures::IsSupported(FLOATING_POINT_EXT)) {
cdlfbr(Condition(5), Condition(0), dst, src);
} else {
// zero-extend src
llgfr(src, src);
// convert to double
cdgbr(dst, src);
}
}
void TurboAssembler::ConvertIntToFloat(DoubleRegister dst, Register src) {
cefbra(Condition(4), dst, src);
}
void TurboAssembler::ConvertUnsignedIntToFloat(DoubleRegister dst,
Register src) {
celfbr(Condition(4), Condition(0), dst, src);
}
void TurboAssembler::ConvertInt64ToFloat(DoubleRegister double_dst,
Register src) {
cegbr(double_dst, src);
}
void TurboAssembler::ConvertInt64ToDouble(DoubleRegister double_dst,
Register src) {
cdgbr(double_dst, src);
}
void TurboAssembler::ConvertUnsignedInt64ToFloat(DoubleRegister double_dst,
Register src) {
celgbr(Condition(0), Condition(0), double_dst, src);
}
void TurboAssembler::ConvertUnsignedInt64ToDouble(DoubleRegister double_dst,
Register src) {
cdlgbr(Condition(0), Condition(0), double_dst, src);
}
void TurboAssembler::ConvertFloat32ToInt64(const Register dst,
const DoubleRegister double_input,
FPRoundingMode rounding_mode) {
Condition m = Condition(0);
switch (rounding_mode) {
case kRoundToZero:
m = Condition(5);
break;
case kRoundToNearest:
UNIMPLEMENTED();
break;
case kRoundToPlusInf:
m = Condition(6);
break;
case kRoundToMinusInf:
m = Condition(7);
break;
default:
UNIMPLEMENTED();
break;
}
cgebr(m, dst, double_input);
}
void TurboAssembler::ConvertDoubleToInt64(const Register dst,
const DoubleRegister double_input,
FPRoundingMode rounding_mode) {
Condition m = Condition(0);
switch (rounding_mode) {
case kRoundToZero:
m = Condition(5);
break;
case kRoundToNearest:
UNIMPLEMENTED();
break;
case kRoundToPlusInf:
m = Condition(6);
break;
case kRoundToMinusInf:
m = Condition(7);
break;
default:
UNIMPLEMENTED();
break;
}
cgdbr(m, dst, double_input);
}
void TurboAssembler::ConvertDoubleToInt32(const Register dst,
const DoubleRegister double_input,
FPRoundingMode rounding_mode) {
Condition m = Condition(0);
switch (rounding_mode) {
case kRoundToZero:
m = Condition(5);
break;
case kRoundToNearest:
m = Condition(4);
break;
case kRoundToPlusInf:
m = Condition(6);
break;
case kRoundToMinusInf:
m = Condition(7);
break;
default:
UNIMPLEMENTED();
break;
}
#ifdef V8_TARGET_ARCH_S390X
lghi(dst, Operand::Zero());
#endif
cfdbr(m, dst, double_input);
}
void TurboAssembler::ConvertFloat32ToInt32(const Register result,
const DoubleRegister double_input,
FPRoundingMode rounding_mode) {
Condition m = Condition(0);
switch (rounding_mode) {
case kRoundToZero:
m = Condition(5);
break;
case kRoundToNearest:
m = Condition(4);
break;
case kRoundToPlusInf:
m = Condition(6);
break;
case kRoundToMinusInf:
m = Condition(7);
break;
default:
UNIMPLEMENTED();
break;
}
#ifdef V8_TARGET_ARCH_S390X
lghi(result, Operand::Zero());
#endif
cfebr(m, result, double_input);
}
void TurboAssembler::ConvertFloat32ToUnsignedInt32(
const Register result, const DoubleRegister double_input,
FPRoundingMode rounding_mode) {
Condition m = Condition(0);
switch (rounding_mode) {
case kRoundToZero:
m = Condition(5);
break;
case kRoundToNearest:
UNIMPLEMENTED();
break;
case kRoundToPlusInf:
m = Condition(6);
break;
case kRoundToMinusInf:
m = Condition(7);
break;
default:
UNIMPLEMENTED();
break;
}
#ifdef V8_TARGET_ARCH_S390X
lghi(result, Operand::Zero());
#endif
clfebr(m, Condition(0), result, double_input);
}
void TurboAssembler::ConvertFloat32ToUnsignedInt64(
const Register result, const DoubleRegister double_input,
FPRoundingMode rounding_mode) {
Condition m = Condition(0);
switch (rounding_mode) {
case kRoundToZero:
m = Condition(5);
break;
case kRoundToNearest:
UNIMPLEMENTED();
break;
case kRoundToPlusInf:
m = Condition(6);
break;
case kRoundToMinusInf:
m = Condition(7);
break;
default:
UNIMPLEMENTED();
break;
}
clgebr(m, Condition(0), result, double_input);
}
void TurboAssembler::ConvertDoubleToUnsignedInt64(
const Register dst, const DoubleRegister double_input,
FPRoundingMode rounding_mode) {
Condition m = Condition(0);
switch (rounding_mode) {
case kRoundToZero:
m = Condition(5);
break;
case kRoundToNearest:
UNIMPLEMENTED();
break;
case kRoundToPlusInf:
m = Condition(6);
break;
case kRoundToMinusInf:
m = Condition(7);
break;
default:
UNIMPLEMENTED();
break;
}
clgdbr(m, Condition(0), dst, double_input);
}
void TurboAssembler::ConvertDoubleToUnsignedInt32(
const Register dst, const DoubleRegister double_input,
FPRoundingMode rounding_mode) {
Condition m = Condition(0);
switch (rounding_mode) {
case kRoundToZero:
m = Condition(5);
break;
case kRoundToNearest:
UNIMPLEMENTED();
break;
case kRoundToPlusInf:
m = Condition(6);
break;
case kRoundToMinusInf:
m = Condition(7);
break;
default:
UNIMPLEMENTED();
break;
}
#ifdef V8_TARGET_ARCH_S390X
lghi(dst, Operand::Zero());
#endif
clfdbr(m, Condition(0), dst, double_input);
}
#if !V8_TARGET_ARCH_S390X
void TurboAssembler::ShiftLeftPair(Register dst_low, Register dst_high,
Register src_low, Register src_high,
Register scratch, Register shift) {
LoadRR(r0, src_high);
LoadRR(r1, src_low);
sldl(r0, shift, Operand::Zero());
LoadRR(dst_high, r0);
LoadRR(dst_low, r1);
}
void TurboAssembler::ShiftLeftPair(Register dst_low, Register dst_high,
Register src_low, Register src_high,
uint32_t shift) {
LoadRR(r0, src_high);
LoadRR(r1, src_low);
sldl(r0, r0, Operand(shift));
LoadRR(dst_high, r0);
LoadRR(dst_low, r1);
}
void TurboAssembler::ShiftRightPair(Register dst_low, Register dst_high,
Register src_low, Register src_high,
Register scratch, Register shift) {
LoadRR(r0, src_high);
LoadRR(r1, src_low);
srdl(r0, shift, Operand::Zero());
LoadRR(dst_high, r0);
LoadRR(dst_low, r1);
}
void TurboAssembler::ShiftRightPair(Register dst_low, Register dst_high,
Register src_low, Register src_high,
uint32_t shift) {
LoadRR(r0, src_high);
LoadRR(r1, src_low);
srdl(r0, Operand(shift));
LoadRR(dst_high, r0);
LoadRR(dst_low, r1);
}
void TurboAssembler::ShiftRightArithPair(Register dst_low, Register dst_high,
Register src_low, Register src_high,
Register scratch, Register shift) {
LoadRR(r0, src_high);
LoadRR(r1, src_low);
srda(r0, shift, Operand::Zero());
LoadRR(dst_high, r0);
LoadRR(dst_low, r1);
}
void TurboAssembler::ShiftRightArithPair(Register dst_low, Register dst_high,
Register src_low, Register src_high,
uint32_t shift) {
LoadRR(r0, src_high);
LoadRR(r1, src_low);
srda(r0, r0, Operand(shift));