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[Qemu-devel] [PATCH 1/2] disas/libvixl: Update to upstream VIXL 1.7
|
From: |
Peter Maydell |
|
Subject: |
[Qemu-devel] [PATCH 1/2] disas/libvixl: Update to upstream VIXL 1.7 |
|
Date: |
Mon, 26 Jan 2015 12:19:38 +0000 |
Update our copy of libvixl to upstream's 1.7 release.
This includes upstream's fix for the issue we had a local
patch for in commit 94cc44a9e.
Signed-off-by: Peter Maydell <address@hidden>
---
disas/libvixl/README | 2 +-
disas/libvixl/a64/assembler-a64.h | 290 +++++++++++++++++++++-------------
disas/libvixl/a64/constants-a64.h | 61 +++++--
disas/libvixl/a64/decoder-a64.h | 2 +-
disas/libvixl/a64/disasm-a64.cc | 142 ++++++++++++++---
disas/libvixl/a64/disasm-a64.h | 48 ++++--
disas/libvixl/a64/instructions-a64.cc | 63 ++++++++
disas/libvixl/a64/instructions-a64.h | 110 ++++++++-----
disas/libvixl/globals.h | 2 +-
disas/libvixl/utils.cc | 13 ++
disas/libvixl/utils.h | 14 +-
11 files changed, 537 insertions(+), 210 deletions(-)
diff --git a/disas/libvixl/README b/disas/libvixl/README
index cba31b4..58db41c 100644
--- a/disas/libvixl/README
+++ b/disas/libvixl/README
@@ -2,7 +2,7 @@
The code in this directory is a subset of libvixl:
https://github.com/armvixl/vixl
(specifically, it is the set of files needed for disassembly only,
-taken from libvixl 1.6).
+taken from libvixl 1.7).
Bugfixes should preferably be sent upstream initially.
The disassembler does not currently support the entire A64 instruction
diff --git a/disas/libvixl/a64/assembler-a64.h
b/disas/libvixl/a64/assembler-a64.h
index 16a704b..35aaf20 100644
--- a/disas/libvixl/a64/assembler-a64.h
+++ b/disas/libvixl/a64/assembler-a64.h
@@ -151,21 +151,21 @@ class CPURegister {
return Aliases(other) && (size_ == other.size_);
}
- inline bool IsZero() const {
+ bool IsZero() const {
VIXL_ASSERT(IsValid());
return IsRegister() && (code_ == kZeroRegCode);
}
- inline bool IsSP() const {
+ bool IsSP() const {
VIXL_ASSERT(IsValid());
return IsRegister() && (code_ == kSPRegInternalCode);
}
- inline bool IsRegister() const {
+ bool IsRegister() const {
return type_ == kRegister;
}
- inline bool IsFPRegister() const {
+ bool IsFPRegister() const {
return type_ == kFPRegister;
}
@@ -179,7 +179,7 @@ class CPURegister {
const FPRegister& S() const;
const FPRegister& D() const;
- inline bool IsSameSizeAndType(const CPURegister& other) const {
+ bool IsSameSizeAndType(const CPURegister& other) const {
return (size_ == other.size_) && (type_ == other.type_);
}
@@ -198,7 +198,7 @@ class CPURegister {
class Register : public CPURegister {
public:
Register() : CPURegister() {}
- inline explicit Register(const CPURegister& other)
+ explicit Register(const CPURegister& other)
: CPURegister(other.code(), other.size(), other.type()) {
VIXL_ASSERT(IsValidRegister());
}
@@ -213,10 +213,6 @@ class Register : public CPURegister {
static const Register& WRegFromCode(unsigned code);
static const Register& XRegFromCode(unsigned code);
- // V8 compatibility.
- static const int kNumRegisters = kNumberOfRegisters;
- static const int kNumAllocatableRegisters = kNumberOfRegisters - 1;
-
private:
static const Register wregisters[];
static const Register xregisters[];
@@ -225,12 +221,12 @@ class Register : public CPURegister {
class FPRegister : public CPURegister {
public:
- inline FPRegister() : CPURegister() {}
- inline explicit FPRegister(const CPURegister& other)
+ FPRegister() : CPURegister() {}
+ explicit FPRegister(const CPURegister& other)
: CPURegister(other.code(), other.size(), other.type()) {
VIXL_ASSERT(IsValidFPRegister());
}
- inline FPRegister(unsigned code, unsigned size)
+ FPRegister(unsigned code, unsigned size)
: CPURegister(code, size, kFPRegister) {}
bool IsValid() const {
@@ -241,10 +237,6 @@ class FPRegister : public CPURegister {
static const FPRegister& SRegFromCode(unsigned code);
static const FPRegister& DRegFromCode(unsigned code);
- // V8 compatibility.
- static const int kNumRegisters = kNumberOfFPRegisters;
- static const int kNumAllocatableRegisters = kNumberOfFPRegisters - 1;
-
private:
static const FPRegister sregisters[];
static const FPRegister dregisters[];
@@ -312,23 +304,23 @@ bool AreSameSizeAndType(const CPURegister& reg1,
// Lists of registers.
class CPURegList {
public:
- inline explicit CPURegList(CPURegister reg1,
- CPURegister reg2 = NoCPUReg,
- CPURegister reg3 = NoCPUReg,
- CPURegister reg4 = NoCPUReg)
+ explicit CPURegList(CPURegister reg1,
+ CPURegister reg2 = NoCPUReg,
+ CPURegister reg3 = NoCPUReg,
+ CPURegister reg4 = NoCPUReg)
: list_(reg1.Bit() | reg2.Bit() | reg3.Bit() | reg4.Bit()),
size_(reg1.size()), type_(reg1.type()) {
VIXL_ASSERT(AreSameSizeAndType(reg1, reg2, reg3, reg4));
VIXL_ASSERT(IsValid());
}
- inline CPURegList(CPURegister::RegisterType type, unsigned size, RegList
list)
+ CPURegList(CPURegister::RegisterType type, unsigned size, RegList list)
: list_(list), size_(size), type_(type) {
VIXL_ASSERT(IsValid());
}
- inline CPURegList(CPURegister::RegisterType type, unsigned size,
- unsigned first_reg, unsigned last_reg)
+ CPURegList(CPURegister::RegisterType type, unsigned size,
+ unsigned first_reg, unsigned last_reg)
: size_(size), type_(type) {
VIXL_ASSERT(((type == CPURegister::kRegister) &&
(last_reg < kNumberOfRegisters)) ||
@@ -340,7 +332,7 @@ class CPURegList {
VIXL_ASSERT(IsValid());
}
- inline CPURegister::RegisterType type() const {
+ CPURegister::RegisterType type() const {
VIXL_ASSERT(IsValid());
return type_;
}
@@ -366,13 +358,13 @@ class CPURegList {
}
// Variants of Combine and Remove which take a single register.
- inline void Combine(const CPURegister& other) {
+ void Combine(const CPURegister& other) {
VIXL_ASSERT(other.type() == type_);
VIXL_ASSERT(other.size() == size_);
Combine(other.code());
}
- inline void Remove(const CPURegister& other) {
+ void Remove(const CPURegister& other) {
VIXL_ASSERT(other.type() == type_);
VIXL_ASSERT(other.size() == size_);
Remove(other.code());
@@ -380,24 +372,51 @@ class CPURegList {
// Variants of Combine and Remove which take a single register by its code;
// the type and size of the register is inferred from this list.
- inline void Combine(int code) {
+ void Combine(int code) {
VIXL_ASSERT(IsValid());
VIXL_ASSERT(CPURegister(code, size_, type_).IsValid());
list_ |= (UINT64_C(1) << code);
}
- inline void Remove(int code) {
+ void Remove(int code) {
VIXL_ASSERT(IsValid());
VIXL_ASSERT(CPURegister(code, size_, type_).IsValid());
list_ &= ~(UINT64_C(1) << code);
}
- inline RegList list() const {
+ static CPURegList Union(const CPURegList& list_1, const CPURegList& list_2) {
+ VIXL_ASSERT(list_1.type_ == list_2.type_);
+ VIXL_ASSERT(list_1.size_ == list_2.size_);
+ return CPURegList(list_1.type_, list_1.size_, list_1.list_ | list_2.list_);
+ }
+ static CPURegList Union(const CPURegList& list_1,
+ const CPURegList& list_2,
+ const CPURegList& list_3);
+ static CPURegList Union(const CPURegList& list_1,
+ const CPURegList& list_2,
+ const CPURegList& list_3,
+ const CPURegList& list_4);
+
+ static CPURegList Intersection(const CPURegList& list_1,
+ const CPURegList& list_2) {
+ VIXL_ASSERT(list_1.type_ == list_2.type_);
+ VIXL_ASSERT(list_1.size_ == list_2.size_);
+ return CPURegList(list_1.type_, list_1.size_, list_1.list_ & list_2.list_);
+ }
+ static CPURegList Intersection(const CPURegList& list_1,
+ const CPURegList& list_2,
+ const CPURegList& list_3);
+ static CPURegList Intersection(const CPURegList& list_1,
+ const CPURegList& list_2,
+ const CPURegList& list_3,
+ const CPURegList& list_4);
+
+ RegList list() const {
VIXL_ASSERT(IsValid());
return list_;
}
- inline void set_list(RegList new_list) {
+ void set_list(RegList new_list) {
VIXL_ASSERT(IsValid());
list_ = new_list;
}
@@ -417,38 +436,38 @@ class CPURegList {
static CPURegList GetCallerSaved(unsigned size = kXRegSize);
static CPURegList GetCallerSavedFP(unsigned size = kDRegSize);
- inline bool IsEmpty() const {
+ bool IsEmpty() const {
VIXL_ASSERT(IsValid());
return list_ == 0;
}
- inline bool IncludesAliasOf(const CPURegister& other) const {
+ bool IncludesAliasOf(const CPURegister& other) const {
VIXL_ASSERT(IsValid());
return (type_ == other.type()) && ((other.Bit() & list_) != 0);
}
- inline bool IncludesAliasOf(int code) const {
+ bool IncludesAliasOf(int code) const {
VIXL_ASSERT(IsValid());
return ((code & list_) != 0);
}
- inline int Count() const {
+ int Count() const {
VIXL_ASSERT(IsValid());
return CountSetBits(list_, kRegListSizeInBits);
}
- inline unsigned RegisterSizeInBits() const {
+ unsigned RegisterSizeInBits() const {
VIXL_ASSERT(IsValid());
return size_;
}
- inline unsigned RegisterSizeInBytes() const {
+ unsigned RegisterSizeInBytes() const {
int size_in_bits = RegisterSizeInBits();
VIXL_ASSERT((size_in_bits % 8) == 0);
return size_in_bits / 8;
}
- inline unsigned TotalSizeInBytes() const {
+ unsigned TotalSizeInBytes() const {
VIXL_ASSERT(IsValid());
return RegisterSizeInBytes() * Count();
}
@@ -587,8 +606,10 @@ class Label {
VIXL_ASSERT(!IsLinked() || IsBound());
}
- inline bool IsBound() const { return location_ >= 0; }
- inline bool IsLinked() const { return !links_.empty(); }
+ bool IsBound() const { return location_ >= 0; }
+ bool IsLinked() const { return !links_.empty(); }
+
+ ptrdiff_t location() const { return location_; }
private:
// The list of linked instructions is stored in a stack-like structure. We
@@ -647,22 +668,20 @@ class Label {
std::stack<ptrdiff_t> * links_extended_;
};
- inline ptrdiff_t location() const { return location_; }
-
- inline void Bind(ptrdiff_t location) {
+ void Bind(ptrdiff_t location) {
// Labels can only be bound once.
VIXL_ASSERT(!IsBound());
location_ = location;
}
- inline void AddLink(ptrdiff_t instruction) {
+ void AddLink(ptrdiff_t instruction) {
// If a label is bound, the assembler already has the information it needs
// to write the instruction, so there is no need to add it to links_.
VIXL_ASSERT(!IsBound());
links_.push(instruction);
}
- inline ptrdiff_t GetAndRemoveNextLink() {
+ ptrdiff_t GetAndRemoveNextLink() {
VIXL_ASSERT(IsLinked());
ptrdiff_t link = links_.top();
links_.pop();
@@ -845,14 +864,14 @@ class Assembler {
// Return the address of an offset in the buffer.
template <typename T>
- inline T GetOffsetAddress(ptrdiff_t offset) {
+ T GetOffsetAddress(ptrdiff_t offset) {
VIXL_STATIC_ASSERT(sizeof(T) >= sizeof(uintptr_t));
return buffer_->GetOffsetAddress<T>(offset);
}
// Return the address of a bound label.
template <typename T>
- inline T GetLabelAddress(const Label * label) {
+ T GetLabelAddress(const Label * label) {
VIXL_ASSERT(label->IsBound());
VIXL_STATIC_ASSERT(sizeof(T) >= sizeof(uintptr_t));
return GetOffsetAddress<T>(label->location());
@@ -860,14 +879,14 @@ class Assembler {
// Return the address of the cursor.
template <typename T>
- inline T GetCursorAddress() {
+ T GetCursorAddress() {
VIXL_STATIC_ASSERT(sizeof(T) >= sizeof(uintptr_t));
return GetOffsetAddress<T>(CursorOffset());
}
// Return the address of the start of the buffer.
template <typename T>
- inline T GetStartAddress() {
+ T GetStartAddress() {
VIXL_STATIC_ASSERT(sizeof(T) >= sizeof(uintptr_t));
return GetOffsetAddress<T>(0);
}
@@ -1074,20 +1093,20 @@ class Assembler {
// Bfm aliases.
// Bitfield insert.
- inline void bfi(const Register& rd,
- const Register& rn,
- unsigned lsb,
- unsigned width) {
+ void bfi(const Register& rd,
+ const Register& rn,
+ unsigned lsb,
+ unsigned width) {
VIXL_ASSERT(width >= 1);
VIXL_ASSERT(lsb + width <= rn.size());
bfm(rd, rn, (rd.size() - lsb) & (rd.size() - 1), width - 1);
}
// Bitfield extract and insert low.
- inline void bfxil(const Register& rd,
- const Register& rn,
- unsigned lsb,
- unsigned width) {
+ void bfxil(const Register& rd,
+ const Register& rn,
+ unsigned lsb,
+ unsigned width) {
VIXL_ASSERT(width >= 1);
VIXL_ASSERT(lsb + width <= rn.size());
bfm(rd, rn, lsb, lsb + width - 1);
@@ -1095,92 +1114,92 @@ class Assembler {
// Sbfm aliases.
// Arithmetic shift right.
- inline void asr(const Register& rd, const Register& rn, unsigned shift) {
+ void asr(const Register& rd, const Register& rn, unsigned shift) {
VIXL_ASSERT(shift < rd.size());
sbfm(rd, rn, shift, rd.size() - 1);
}
// Signed bitfield insert with zero at right.
- inline void sbfiz(const Register& rd,
- const Register& rn,
- unsigned lsb,
- unsigned width) {
+ void sbfiz(const Register& rd,
+ const Register& rn,
+ unsigned lsb,
+ unsigned width) {
VIXL_ASSERT(width >= 1);
VIXL_ASSERT(lsb + width <= rn.size());
sbfm(rd, rn, (rd.size() - lsb) & (rd.size() - 1), width - 1);
}
// Signed bitfield extract.
- inline void sbfx(const Register& rd,
- const Register& rn,
- unsigned lsb,
- unsigned width) {
+ void sbfx(const Register& rd,
+ const Register& rn,
+ unsigned lsb,
+ unsigned width) {
VIXL_ASSERT(width >= 1);
VIXL_ASSERT(lsb + width <= rn.size());
sbfm(rd, rn, lsb, lsb + width - 1);
}
// Signed extend byte.
- inline void sxtb(const Register& rd, const Register& rn) {
+ void sxtb(const Register& rd, const Register& rn) {
sbfm(rd, rn, 0, 7);
}
// Signed extend halfword.
- inline void sxth(const Register& rd, const Register& rn) {
+ void sxth(const Register& rd, const Register& rn) {
sbfm(rd, rn, 0, 15);
}
// Signed extend word.
- inline void sxtw(const Register& rd, const Register& rn) {
+ void sxtw(const Register& rd, const Register& rn) {
sbfm(rd, rn, 0, 31);
}
// Ubfm aliases.
// Logical shift left.
- inline void lsl(const Register& rd, const Register& rn, unsigned shift) {
+ void lsl(const Register& rd, const Register& rn, unsigned shift) {
unsigned reg_size = rd.size();
VIXL_ASSERT(shift < reg_size);
ubfm(rd, rn, (reg_size - shift) % reg_size, reg_size - shift - 1);
}
// Logical shift right.
- inline void lsr(const Register& rd, const Register& rn, unsigned shift) {
+ void lsr(const Register& rd, const Register& rn, unsigned shift) {
VIXL_ASSERT(shift < rd.size());
ubfm(rd, rn, shift, rd.size() - 1);
}
// Unsigned bitfield insert with zero at right.
- inline void ubfiz(const Register& rd,
- const Register& rn,
- unsigned lsb,
- unsigned width) {
+ void ubfiz(const Register& rd,
+ const Register& rn,
+ unsigned lsb,
+ unsigned width) {
VIXL_ASSERT(width >= 1);
VIXL_ASSERT(lsb + width <= rn.size());
ubfm(rd, rn, (rd.size() - lsb) & (rd.size() - 1), width - 1);
}
// Unsigned bitfield extract.
- inline void ubfx(const Register& rd,
- const Register& rn,
- unsigned lsb,
- unsigned width) {
+ void ubfx(const Register& rd,
+ const Register& rn,
+ unsigned lsb,
+ unsigned width) {
VIXL_ASSERT(width >= 1);
VIXL_ASSERT(lsb + width <= rn.size());
ubfm(rd, rn, lsb, lsb + width - 1);
}
// Unsigned extend byte.
- inline void uxtb(const Register& rd, const Register& rn) {
+ void uxtb(const Register& rd, const Register& rn) {
ubfm(rd, rn, 0, 7);
}
// Unsigned extend halfword.
- inline void uxth(const Register& rd, const Register& rn) {
+ void uxth(const Register& rd, const Register& rn) {
ubfm(rd, rn, 0, 15);
}
// Unsigned extend word.
- inline void uxtw(const Register& rd, const Register& rn) {
+ void uxtw(const Register& rd, const Register& rn) {
ubfm(rd, rn, 0, 31);
}
@@ -1230,7 +1249,7 @@ class Assembler {
void cneg(const Register& rd, const Register& rn, Condition cond);
// Rotate right.
- inline void ror(const Register& rd, const Register& rs, unsigned shift) {
+ void ror(const Register& rd, const Register& rs, unsigned shift) {
extr(rd, rs, rs, shift);
}
@@ -1495,6 +1514,19 @@ class Assembler {
// Load-acquire register.
void ldar(const Register& rt, const MemOperand& src);
+ // Prefetch memory.
+ void prfm(PrefetchOperation op, const MemOperand& addr,
+ LoadStoreScalingOption option = PreferScaledOffset);
+
+ // Prefetch memory (with unscaled offset).
+ void prfum(PrefetchOperation op, const MemOperand& addr,
+ LoadStoreScalingOption option = PreferUnscaledOffset);
+
+ // Prefetch memory in the literal pool.
+ void prfm(PrefetchOperation op, RawLiteral* literal);
+
+ // Prefetch from pc + imm19 << 2.
+ void prfm(PrefetchOperation op, int imm19);
// Move instructions. The default shift of -1 indicates that the move
// instruction will calculate an appropriate 16-bit immediate and left shift
@@ -1638,12 +1670,21 @@ class Assembler {
// FP round to integer (nearest with ties to away).
void frinta(const FPRegister& fd, const FPRegister& fn);
+ // FP round to integer (implicit rounding).
+ void frinti(const FPRegister& fd, const FPRegister& fn);
+
// FP round to integer (toward minus infinity).
void frintm(const FPRegister& fd, const FPRegister& fn);
// FP round to integer (nearest with ties to even).
void frintn(const FPRegister& fd, const FPRegister& fn);
+ // FP round to integer (toward plus infinity).
+ void frintp(const FPRegister& fd, const FPRegister& fn);
+
+ // FP round to integer (exact, implicit rounding).
+ void frintx(const FPRegister& fd, const FPRegister& fn);
+
// FP round to integer (towards zero).
void frintz(const FPRegister& fd, const FPRegister& fn);
@@ -1705,16 +1746,16 @@ class Assembler {
// Emit generic instructions.
// Emit raw instructions into the instruction stream.
- inline void dci(Instr raw_inst) { Emit(raw_inst); }
+ void dci(Instr raw_inst) { Emit(raw_inst); }
// Emit 32 bits of data into the instruction stream.
- inline void dc32(uint32_t data) {
+ void dc32(uint32_t data) {
VIXL_ASSERT(buffer_monitor_ > 0);
buffer_->Emit32(data);
}
// Emit 64 bits of data into the instruction stream.
- inline void dc64(uint64_t data) {
+ void dc64(uint64_t data) {
VIXL_ASSERT(buffer_monitor_ > 0);
buffer_->Emit64(data);
}
@@ -1849,14 +1890,14 @@ class Assembler {
}
}
- static inline Instr ImmS(unsigned imms, unsigned reg_size) {
+ static Instr ImmS(unsigned imms, unsigned reg_size) {
VIXL_ASSERT(((reg_size == kXRegSize) && is_uint6(imms)) ||
((reg_size == kWRegSize) && is_uint5(imms)));
USE(reg_size);
return imms << ImmS_offset;
}
- static inline Instr ImmR(unsigned immr, unsigned reg_size) {
+ static Instr ImmR(unsigned immr, unsigned reg_size) {
VIXL_ASSERT(((reg_size == kXRegSize) && is_uint6(immr)) ||
((reg_size == kWRegSize) && is_uint5(immr)));
USE(reg_size);
@@ -1864,7 +1905,7 @@ class Assembler {
return immr << ImmR_offset;
}
- static inline Instr ImmSetBits(unsigned imms, unsigned reg_size) {
+ static Instr ImmSetBits(unsigned imms, unsigned reg_size) {
VIXL_ASSERT((reg_size == kWRegSize) || (reg_size == kXRegSize));
VIXL_ASSERT(is_uint6(imms));
VIXL_ASSERT((reg_size == kXRegSize) || is_uint6(imms + 3));
@@ -1872,7 +1913,7 @@ class Assembler {
return imms << ImmSetBits_offset;
}
- static inline Instr ImmRotate(unsigned immr, unsigned reg_size) {
+ static Instr ImmRotate(unsigned immr, unsigned reg_size) {
VIXL_ASSERT((reg_size == kWRegSize) || (reg_size == kXRegSize));
VIXL_ASSERT(((reg_size == kXRegSize) && is_uint6(immr)) ||
((reg_size == kWRegSize) && is_uint5(immr)));
@@ -1880,12 +1921,12 @@ class Assembler {
return immr << ImmRotate_offset;
}
- static inline Instr ImmLLiteral(int imm19) {
+ static Instr ImmLLiteral(int imm19) {
VIXL_ASSERT(is_int19(imm19));
return truncate_to_int19(imm19) << ImmLLiteral_offset;
}
- static inline Instr BitN(unsigned bitn, unsigned reg_size) {
+ static Instr BitN(unsigned bitn, unsigned reg_size) {
VIXL_ASSERT((reg_size == kWRegSize) || (reg_size == kXRegSize));
VIXL_ASSERT((reg_size == kXRegSize) || (bitn == 0));
USE(reg_size);
@@ -1943,6 +1984,11 @@ class Assembler {
return shift_amount << ImmShiftLS_offset;
}
+ static Instr ImmPrefetchOperation(int imm5) {
+ VIXL_ASSERT(is_uint5(imm5));
+ return imm5 << ImmPrefetchOperation_offset;
+ }
+
static Instr ImmException(int imm16) {
VIXL_ASSERT(is_uint16(imm16));
return imm16 << ImmException_offset;
@@ -2003,12 +2049,32 @@ class Assembler {
return scale << FPScale_offset;
}
+ // Immediate field checking helpers.
+ static bool IsImmAddSub(int64_t immediate);
+ static bool IsImmConditionalCompare(int64_t immediate);
+ static bool IsImmFP32(float imm);
+ static bool IsImmFP64(double imm);
+ static bool IsImmLogical(uint64_t value,
+ unsigned width,
+ unsigned* n = NULL,
+ unsigned* imm_s = NULL,
+ unsigned* imm_r = NULL);
+ static bool IsImmLSPair(int64_t offset, LSDataSize size);
+ static bool IsImmLSScaled(int64_t offset, LSDataSize size);
+ static bool IsImmLSUnscaled(int64_t offset);
+ static bool IsImmMovn(uint64_t imm, unsigned reg_size);
+ static bool IsImmMovz(uint64_t imm, unsigned reg_size);
+
// Size of the code generated since label to the current position.
size_t SizeOfCodeGeneratedSince(Label* label) const {
VIXL_ASSERT(label->IsBound());
return buffer_->OffsetFrom(label->location());
}
+ size_t SizeOfCodeGenerated() const {
+ return buffer_->CursorOffset();
+ }
+
size_t BufferCapacity() const { return buffer_->capacity(); }
size_t RemainingBufferSpace() const { return buffer_->RemainingBytes(); }
@@ -2025,7 +2091,7 @@ class Assembler {
}
}
-#ifdef DEBUG
+#ifdef VIXL_DEBUG
void AcquireBuffer() {
VIXL_ASSERT(buffer_monitor_ >= 0);
buffer_monitor_++;
@@ -2037,16 +2103,16 @@ class Assembler {
}
#endif
- inline PositionIndependentCodeOption pic() {
+ PositionIndependentCodeOption pic() const {
return pic_;
}
- inline bool AllowPageOffsetDependentCode() {
+ bool AllowPageOffsetDependentCode() const {
return (pic() == PageOffsetDependentCode) ||
(pic() == PositionDependentCode);
}
- static inline const Register& AppropriateZeroRegFor(const CPURegister& reg) {
+ static const Register& AppropriateZeroRegFor(const CPURegister& reg) {
return reg.Is64Bits() ? xzr : wzr;
}
@@ -2056,14 +2122,15 @@ class Assembler {
const MemOperand& addr,
LoadStoreOp op,
LoadStoreScalingOption option = PreferScaledOffset);
- static bool IsImmLSUnscaled(int64_t offset);
- static bool IsImmLSScaled(int64_t offset, LSDataSize size);
void LoadStorePair(const CPURegister& rt,
const CPURegister& rt2,
const MemOperand& addr,
LoadStorePairOp op);
- static bool IsImmLSPair(int64_t offset, LSDataSize size);
+
+ void Prefetch(PrefetchOperation op,
+ const MemOperand& addr,
+ LoadStoreScalingOption option = PreferScaledOffset);
// TODO(all): The third parameter should be passed by reference but gcc 4.8.2
// reports a bogus uninitialised warning then.
@@ -2077,18 +2144,12 @@ class Assembler {
unsigned imm_s,
unsigned imm_r,
LogicalOp op);
- static bool IsImmLogical(uint64_t value,
- unsigned width,
- unsigned* n = NULL,
- unsigned* imm_s = NULL,
- unsigned* imm_r = NULL);
void ConditionalCompare(const Register& rn,
const Operand& operand,
StatusFlags nzcv,
Condition cond,
ConditionalCompareOp op);
- static bool IsImmConditionalCompare(int64_t immediate);
void AddSubWithCarry(const Register& rd,
const Register& rn,
@@ -2096,8 +2157,6 @@ class Assembler {
FlagsUpdate S,
AddSubWithCarryOp op);
- static bool IsImmFP32(float imm);
- static bool IsImmFP64(double imm);
// Functions for emulating operands not directly supported by the instruction
// set.
@@ -2115,7 +2174,6 @@ class Assembler {
const Operand& operand,
FlagsUpdate S,
AddSubOp op);
- static bool IsImmAddSub(int64_t immediate);
// Find an appropriate LoadStoreOp or LoadStorePairOp for the specified
// registers. Only simple loads are supported; sign- and zero-extension (such
@@ -2180,6 +2238,12 @@ class Assembler {
const FPRegister& fa,
FPDataProcessing3SourceOp op);
+ // Encode the specified MemOperand for the specified access size and scaling
+ // preference.
+ Instr LoadStoreMemOperand(const MemOperand& addr,
+ LSDataSize size,
+ LoadStoreScalingOption option);
+
// Link the current (not-yet-emitted) instruction to the specified label,
then
// return an offset to be encoded in the instruction. If the label is not yet
// bound, an offset of 0 is returned.
@@ -2205,7 +2269,7 @@ class Assembler {
CodeBuffer* buffer_;
PositionIndependentCodeOption pic_;
-#ifdef DEBUG
+#ifdef VIXL_DEBUG
int64_t buffer_monitor_;
#endif
};
@@ -2239,7 +2303,7 @@ class CodeBufferCheckScope {
AssertPolicy assert_policy = kMaximumSize)
: assm_(assm) {
if (check_policy == kCheck) assm->EnsureSpaceFor(size);
-#ifdef DEBUG
+#ifdef VIXL_DEBUG
assm->bind(&start_);
size_ = size;
assert_policy_ = assert_policy;
@@ -2251,7 +2315,7 @@ class CodeBufferCheckScope {
// This is a shortcut for CodeBufferCheckScope(assm, 0, kNoCheck, kNoAssert).
explicit CodeBufferCheckScope(Assembler* assm) : assm_(assm) {
-#ifdef DEBUG
+#ifdef VIXL_DEBUG
size_ = 0;
assert_policy_ = kNoAssert;
assm->AcquireBuffer();
@@ -2259,7 +2323,7 @@ class CodeBufferCheckScope {
}
~CodeBufferCheckScope() {
-#ifdef DEBUG
+#ifdef VIXL_DEBUG
assm_->ReleaseBuffer();
switch (assert_policy_) {
case kNoAssert: break;
@@ -2277,7 +2341,7 @@ class CodeBufferCheckScope {
protected:
Assembler* assm_;
-#ifdef DEBUG
+#ifdef VIXL_DEBUG
Label start_;
size_t size_;
AssertPolicy assert_policy_;
diff --git a/disas/libvixl/a64/constants-a64.h
b/disas/libvixl/a64/constants-a64.h
index 7a14f85..bc1a2c4 100644
--- a/disas/libvixl/a64/constants-a64.h
+++ b/disas/libvixl/a64/constants-a64.h
@@ -31,12 +31,6 @@ namespace vixl {
const unsigned kNumberOfRegisters = 32;
const unsigned kNumberOfFPRegisters = 32;
-// Callee saved registers are x21-x30(lr).
-const int kNumberOfCalleeSavedRegisters = 10;
-const int kFirstCalleeSavedRegisterIndex = 21;
-// Callee saved FP registers are d8-d15.
-const int kNumberOfCalleeSavedFPRegisters = 8;
-const int kFirstCalleeSavedFPRegisterIndex = 8;
#define REGISTER_CODE_LIST(R)
\
R(0) R(1) R(2) R(3) R(4) R(5) R(6) R(7)
\
@@ -53,7 +47,6 @@ V_(Ra, 14, 10, Bits) /* Third source
register. */ \
V_(Rt, 4, 0, Bits) /* Load/store register. */
\
V_(Rt2, 14, 10, Bits) /* Load/store second register. */
\
V_(Rs, 20, 16, Bits) /* Exclusive access status. */
\
-V_(PrefetchMode, 4, 0, Bits)
\
\
/* Common bits */
\
V_(SixtyFourBits, 31, 31, Bits)
\
@@ -109,6 +102,10 @@ V_(ImmLSUnsigned, 21, 10, Bits)
\
V_(ImmLSPair, 21, 15, SignedBits)
\
V_(SizeLS, 31, 30, Bits)
\
V_(ImmShiftLS, 12, 12, Bits)
\
+V_(ImmPrefetchOperation, 4, 0, Bits)
\
+V_(PrefetchHint, 4, 3, Bits)
\
+V_(PrefetchTarget, 2, 1, Bits)
\
+V_(PrefetchStream, 0, 0, Bits)
\
\
/* Other immediates */
\
V_(ImmUncondBranch, 25, 0, SignedBits)
\
@@ -269,6 +266,29 @@ enum BarrierType {
BarrierAll = 3
};
+enum PrefetchOperation {
+ PLDL1KEEP = 0x00,
+ PLDL1STRM = 0x01,
+ PLDL2KEEP = 0x02,
+ PLDL2STRM = 0x03,
+ PLDL3KEEP = 0x04,
+ PLDL3STRM = 0x05,
+
+ PLIL1KEEP = 0x08,
+ PLIL1STRM = 0x09,
+ PLIL2KEEP = 0x0a,
+ PLIL2STRM = 0x0b,
+ PLIL3KEEP = 0x0c,
+ PLIL3STRM = 0x0d,
+
+ PSTL1KEEP = 0x10,
+ PSTL1STRM = 0x11,
+ PSTL2KEEP = 0x12,
+ PSTL2STRM = 0x13,
+ PSTL3KEEP = 0x14,
+ PSTL3STRM = 0x15
+};
+
// System/special register names.
// This information is not encoded as one field but as the concatenation of
// multiple fields (Op0<0>, Op1, Crn, Crm, Op2).
@@ -605,6 +625,12 @@ enum LoadStoreAnyOp {
LoadStoreAnyFixed = 0x08000000
};
+// Any load pair or store pair.
+enum LoadStorePairAnyOp {
+ LoadStorePairAnyFMask = 0x3a000000,
+ LoadStorePairAnyFixed = 0x28000000
+};
+
#define LOAD_STORE_PAIR_OP_LIST(V) \
V(STP, w, 0x00000000), \
V(LDP, w, 0x00400000), \
@@ -703,27 +729,28 @@ enum LoadLiteralOp {
V(LD, R, d, 0xC4400000)
+// Load/store (post, pre, offset and unsigned.)
+enum LoadStoreOp {
+ LoadStoreOpMask = 0xC4C00000,
+ #define LOAD_STORE(A, B, C, D) \
+ A##B##_##C = D
+ LOAD_STORE_OP_LIST(LOAD_STORE),
+ #undef LOAD_STORE
+ PRFM = 0xC0800000
+};
+
// Load/store unscaled offset.
enum LoadStoreUnscaledOffsetOp {
LoadStoreUnscaledOffsetFixed = 0x38000000,
LoadStoreUnscaledOffsetFMask = 0x3B200C00,
LoadStoreUnscaledOffsetMask = 0xFFE00C00,
+ PRFUM = LoadStoreUnscaledOffsetFixed | PRFM,
#define LOAD_STORE_UNSCALED(A, B, C, D) \
A##U##B##_##C = LoadStoreUnscaledOffsetFixed | D
LOAD_STORE_OP_LIST(LOAD_STORE_UNSCALED)
#undef LOAD_STORE_UNSCALED
};
-// Load/store (post, pre, offset and unsigned.)
-enum LoadStoreOp {
- LoadStoreOpMask = 0xC4C00000,
- #define LOAD_STORE(A, B, C, D) \
- A##B##_##C = D
- LOAD_STORE_OP_LIST(LOAD_STORE),
- #undef LOAD_STORE
- PRFM = 0xC0800000
-};
-
// Load/store post index.
enum LoadStorePostIndex {
LoadStorePostIndexFixed = 0x38000400,
diff --git a/disas/libvixl/a64/decoder-a64.h b/disas/libvixl/a64/decoder-a64.h
index 172594c..fd08d6c 100644
--- a/disas/libvixl/a64/decoder-a64.h
+++ b/disas/libvixl/a64/decoder-a64.h
@@ -108,7 +108,7 @@ class DecoderVisitor {
}
private:
- VisitorConstness constness_;
+ const VisitorConstness constness_;
};
diff --git a/disas/libvixl/a64/disasm-a64.cc b/disas/libvixl/a64/disasm-a64.cc
index e4a74aa..f7bc246 100644
--- a/disas/libvixl/a64/disasm-a64.cc
+++ b/disas/libvixl/a64/disasm-a64.cc
@@ -34,6 +34,7 @@ Disassembler::Disassembler() {
buffer_ = reinterpret_cast<char*>(malloc(buffer_size_));
buffer_pos_ = 0;
own_buffer_ = true;
+ code_address_offset_ = 0;
}
@@ -42,6 +43,7 @@ Disassembler::Disassembler(char* text_buffer, int
buffer_size) {
buffer_ = text_buffer;
buffer_pos_ = 0;
own_buffer_ = false;
+ code_address_offset_ = 0;
}
@@ -739,9 +741,25 @@ void Disassembler::VisitMoveWideImmediate(const
Instruction* instr) {
// shift calculation.
switch (instr->Mask(MoveWideImmediateMask)) {
case MOVN_w:
- case MOVN_x: mnemonic = "movn"; break;
+ case MOVN_x:
+ if ((instr->ImmMoveWide()) || (instr->ShiftMoveWide() == 0)) {
+ if ((instr->SixtyFourBits() == 0) && (instr->ImmMoveWide() == 0xffff))
{
+ mnemonic = "movn";
+ } else {
+ mnemonic = "mov";
+ form = "'Rd, 'IMoveNeg";
+ }
+ } else {
+ mnemonic = "movn";
+ }
+ break;
case MOVZ_w:
- case MOVZ_x: mnemonic = "movz"; break;
+ case MOVZ_x:
+ if ((instr->ImmMoveWide()) || (instr->ShiftMoveWide() == 0))
+ mnemonic = "mov";
+ else
+ mnemonic = "movz";
+ break;
case MOVK_w:
case MOVK_x: mnemonic = "movk"; form = "'Rd, 'IMoveLSL"; break;
default: VIXL_UNREACHABLE();
@@ -806,7 +824,7 @@ void Disassembler::VisitLoadStoreUnsignedOffset(const
Instruction* instr) {
case A##_unsigned: mnemonic = B; form = C ", ['Xns'ILU]"; break;
LOAD_STORE_LIST(LS_UNSIGNEDOFFSET)
#undef LS_UNSIGNEDOFFSET
- case PRFM_unsigned: mnemonic = "prfm"; form = "'PrefOp, ['Xn'ILU]";
+ case PRFM_unsigned: mnemonic = "prfm"; form = "'PrefOp, ['Xns'ILU]";
}
Format(instr, mnemonic, form);
}
@@ -833,6 +851,7 @@ void Disassembler::VisitLoadStoreUnscaledOffset(const
Instruction* instr) {
const char *form_x = "'Xt, ['Xns'ILS]";
const char *form_s = "'St, ['Xns'ILS]";
const char *form_d = "'Dt, ['Xns'ILS]";
+ const char *form_prefetch = "'PrefOp, ['Xns'ILS]";
switch (instr->Mask(LoadStoreUnscaledOffsetMask)) {
case STURB_w: mnemonic = "sturb"; break;
@@ -852,6 +871,7 @@ void Disassembler::VisitLoadStoreUnscaledOffset(const
Instruction* instr) {
case LDURSH_x: form = form_x; // Fall through.
case LDURSH_w: mnemonic = "ldursh"; break;
case LDURSW_x: mnemonic = "ldursw"; form = form_x; break;
+ case PRFUM: mnemonic = "prfum"; form = form_prefetch; break;
default: form = "(LoadStoreUnscaledOffset)";
}
Format(instr, mnemonic, form);
@@ -872,6 +892,11 @@ void Disassembler::VisitLoadLiteral(const Instruction*
instr) {
form = "'Xt, 'ILLiteral 'LValue";
break;
}
+ case PRFM_lit: {
+ mnemonic = "prfm";
+ form = "'PrefOp, 'ILLiteral 'LValue";
+ break;
+ }
default: mnemonic = "unimplemented";
}
Format(instr, mnemonic, form);
@@ -1344,7 +1369,7 @@ void Disassembler::AppendPCRelativeOffsetToOutput(const
Instruction* instr,
void Disassembler::AppendAddressToOutput(const Instruction* instr,
const void* addr) {
USE(instr);
- AppendToOutput("(addr %p)", addr);
+ AppendToOutput("(addr 0x%" PRIxPTR ")", reinterpret_cast<uintptr_t>(addr));
}
@@ -1360,6 +1385,40 @@ void Disassembler::AppendDataAddressToOutput(const
Instruction* instr,
}
+void Disassembler::AppendCodeRelativeAddressToOutput(const Instruction* instr,
+ const void* addr) {
+ USE(instr);
+ int64_t rel_addr = CodeRelativeAddress(addr);
+ if (rel_addr >= 0) {
+ AppendToOutput("(addr 0x%" PRIx64 ")", rel_addr);
+ } else {
+ AppendToOutput("(addr -0x%" PRIx64 ")", -rel_addr);
+ }
+}
+
+
+void Disassembler::AppendCodeRelativeCodeAddressToOutput(
+ const Instruction* instr, const void* addr) {
+ AppendCodeRelativeAddressToOutput(instr, addr);
+}
+
+
+void Disassembler::AppendCodeRelativeDataAddressToOutput(
+ const Instruction* instr, const void* addr) {
+ AppendCodeRelativeAddressToOutput(instr, addr);
+}
+
+
+void Disassembler::MapCodeAddress(int64_t base_address,
+ const Instruction* instr_address) {
+ set_code_address_offset(
+ base_address - reinterpret_cast<intptr_t>(instr_address));
+}
+int64_t Disassembler::CodeRelativeAddress(const void* addr) {
+ return reinterpret_cast<intptr_t>(addr) + code_address_offset();
+}
+
+
void Disassembler::Format(const Instruction* instr, const char* mnemonic,
const char* format) {
VIXL_ASSERT(mnemonic != NULL);
@@ -1486,16 +1545,20 @@ int Disassembler::SubstituteImmediateField(const
Instruction* instr,
VIXL_ASSERT(format[0] == 'I');
switch (format[1]) {
- case 'M': { // IMoveImm or IMoveLSL.
- if (format[5] == 'I') {
- uint64_t imm = instr->ImmMoveWide() << (16 * instr->ShiftMoveWide());
- AppendToOutput("#0x%" PRIx64, imm);
- } else {
- VIXL_ASSERT(format[5] == 'L');
+ case 'M': { // IMoveImm, IMoveNeg or IMoveLSL.
+ if (format[5] == 'L') {
AppendToOutput("#0x%" PRIx64, instr->ImmMoveWide());
if (instr->ShiftMoveWide() > 0) {
AppendToOutput(", lsl #%" PRId64, 16 * instr->ShiftMoveWide());
}
+ } else {
+ VIXL_ASSERT((format[5] == 'I') || (format[5] == 'N'));
+ uint64_t imm = instr->ImmMoveWide() << (16 * instr->ShiftMoveWide());
+ if (format[5] == 'N')
+ imm = ~imm;
+ if (!instr->SixtyFourBits())
+ imm &= UINT64_C(0xffffffff);
+ AppendToOutput("#0x%" PRIx64, imm);
}
return 8;
}
@@ -1634,14 +1697,31 @@ int Disassembler::SubstituteLiteralField(const
Instruction* instr,
VIXL_ASSERT(strncmp(format, "LValue", 6) == 0);
USE(format);
+ const void * address = instr->LiteralAddress<const void *>();
switch (instr->Mask(LoadLiteralMask)) {
case LDR_w_lit:
case LDR_x_lit:
case LDRSW_x_lit:
case LDR_s_lit:
case LDR_d_lit:
- AppendDataAddressToOutput(instr, instr->LiteralAddress());
+ AppendCodeRelativeDataAddressToOutput(instr, address);
break;
+ case PRFM_lit: {
+ // Use the prefetch hint to decide how to print the address.
+ switch (instr->PrefetchHint()) {
+ case 0x0: // PLD: prefetch for load.
+ case 0x2: // PST: prepare for store.
+ AppendCodeRelativeDataAddressToOutput(instr, address);
+ break;
+ case 0x1: // PLI: preload instructions.
+ AppendCodeRelativeCodeAddressToOutput(instr, address);
+ break;
+ case 0x3: // Unallocated hint.
+ AppendCodeRelativeAddressToOutput(instr, address);
+ break;
+ }
+ break;
+ }
default:
VIXL_UNREACHABLE();
}
@@ -1701,17 +1781,22 @@ int Disassembler::SubstitutePCRelAddressField(const
Instruction* instr,
(strcmp(format, "AddrPCRelPage") == 0)); // Used by `adrp`.
int64_t offset = instr->ImmPCRel();
- const Instruction * base = instr;
+ // Compute the target address based on the effective address (after applying
+ // code_address_offset). This is required for correct behaviour of adrp.
+ const Instruction* base = instr + code_address_offset();
if (format[9] == 'P') {
offset *= kPageSize;
base = AlignDown(base, kPageSize);
}
+ // Strip code_address_offset before printing, so we can use the
+ // semantically-correct AppendCodeRelativeAddressToOutput.
+ const void* target =
+ reinterpret_cast<const void*>(base + offset - code_address_offset());
- const void* target = reinterpret_cast<const void*>(base + offset);
AppendPCRelativeOffsetToOutput(instr, offset);
AppendToOutput(" ");
- AppendAddressToOutput(instr, target);
+ AppendCodeRelativeAddressToOutput(instr, target);
return 13;
}
@@ -1738,7 +1823,7 @@ int Disassembler::SubstituteBranchTargetField(const
Instruction* instr,
AppendPCRelativeOffsetToOutput(instr, offset);
AppendToOutput(" ");
- AppendCodeAddressToOutput(instr, target_address);
+ AppendCodeRelativeCodeAddressToOutput(instr, target_address);
return 8;
}
@@ -1805,13 +1890,26 @@ int Disassembler::SubstitutePrefetchField(const
Instruction* instr,
VIXL_ASSERT(format[0] == 'P');
USE(format);
- int prefetch_mode = instr->PrefetchMode();
-
- const char* ls = (prefetch_mode & 0x10) ? "st" : "ld";
- int level = (prefetch_mode >> 1) + 1;
- const char* ks = (prefetch_mode & 1) ? "strm" : "keep";
-
- AppendToOutput("p%sl%d%s", ls, level, ks);
+ static const char* hints[] = {"ld", "li", "st"};
+ static const char* stream_options[] = {"keep", "strm"};
+
+ unsigned hint = instr->PrefetchHint();
+ unsigned target = instr->PrefetchTarget() + 1;
+ unsigned stream = instr->PrefetchStream();
+
+ if ((hint >= (sizeof(hints) / sizeof(hints[0]))) || (target > 3)) {
+ // Unallocated prefetch operations.
+ int prefetch_mode = instr->ImmPrefetchOperation();
+ AppendToOutput("#0b%c%c%c%c%c",
+ (prefetch_mode & (1 << 4)) ? '1' : '0',
+ (prefetch_mode & (1 << 3)) ? '1' : '0',
+ (prefetch_mode & (1 << 2)) ? '1' : '0',
+ (prefetch_mode & (1 << 1)) ? '1' : '0',
+ (prefetch_mode & (1 << 0)) ? '1' : '0');
+ } else {
+ VIXL_ASSERT(stream < (sizeof(stream_options) / sizeof(stream_options[0])));
+ AppendToOutput("p%sl%d%s", hints[hint], target, stream_options[stream]);
+ }
return 6;
}
diff --git a/disas/libvixl/a64/disasm-a64.h b/disas/libvixl/a64/disasm-a64.h
index db04337..ddfe98b 100644
--- a/disas/libvixl/a64/disasm-a64.h
+++ b/disas/libvixl/a64/disasm-a64.h
@@ -43,7 +43,7 @@ class Disassembler: public DecoderVisitor {
char* GetOutput();
// Declare all Visitor functions.
- #define DECLARE(A) void Visit##A(const Instruction* instr);
+ #define DECLARE(A) virtual void Visit##A(const Instruction* instr);
VISITOR_LIST(DECLARE)
#undef DECLARE
@@ -65,23 +65,45 @@ class Disassembler: public DecoderVisitor {
// Prints an address, in the general case. It can be code or data. This is
// used for example to print the target address of an ADR instruction.
- virtual void AppendAddressToOutput(const Instruction* instr,
- const void* addr);
+ virtual void AppendCodeRelativeAddressToOutput(const Instruction* instr,
+ const void* addr);
// Prints the address of some code.
// This is used for example to print the target address of a branch to an
// immediate offset.
// A sub-class can for example override this method to lookup the address and
// print an appropriate name.
- virtual void AppendCodeAddressToOutput(const Instruction* instr,
- const void* addr);
+ virtual void AppendCodeRelativeCodeAddressToOutput(const Instruction* instr,
+ const void* addr);
// Prints the address of some data.
// This is used for example to print the source address of a load literal
// instruction.
+ virtual void AppendCodeRelativeDataAddressToOutput(const Instruction* instr,
+ const void* addr);
+
+ // Same as the above, but for addresses that are not relative to the code
+ // buffer. They are currently not used by VIXL.
+ virtual void AppendAddressToOutput(const Instruction* instr,
+ const void* addr);
+ virtual void AppendCodeAddressToOutput(const Instruction* instr,
+ const void* addr);
virtual void AppendDataAddressToOutput(const Instruction* instr,
const void* addr);
+ public:
+ // Get/Set the offset that should be added to code addresses when printing
+ // code-relative addresses in the AppendCodeRelative<Type>AddressToOutput()
+ // helpers.
+ // Below is an example of how a branch immediate instruction in memory at
+ // address 0xb010200 would disassemble with different offsets.
+ // Base address | Disassembly
+ // 0x0 | 0xb010200: b #+0xcc (addr 0xb0102cc)
+ // 0x10000 | 0xb000200: b #+0xcc (addr 0xb0002cc)
+ // 0xb010200 | 0x0: b #+0xcc (addr 0xcc)
+ void MapCodeAddress(int64_t base_address, const Instruction* instr_address);
+ int64_t CodeRelativeAddress(const void* instr);
+
private:
void Format(
const Instruction* instr, const char* mnemonic, const char* format);
@@ -101,32 +123,40 @@ class Disassembler: public DecoderVisitor {
int SubstitutePrefetchField(const Instruction* instr, const char* format);
int SubstituteBarrierField(const Instruction* instr, const char* format);
- inline bool RdIsZROrSP(const Instruction* instr) const {
+ bool RdIsZROrSP(const Instruction* instr) const {
return (instr->Rd() == kZeroRegCode);
}
- inline bool RnIsZROrSP(const Instruction* instr) const {
+ bool RnIsZROrSP(const Instruction* instr) const {
return (instr->Rn() == kZeroRegCode);
}
- inline bool RmIsZROrSP(const Instruction* instr) const {
+ bool RmIsZROrSP(const Instruction* instr) const {
return (instr->Rm() == kZeroRegCode);
}
- inline bool RaIsZROrSP(const Instruction* instr) const {
+ bool RaIsZROrSP(const Instruction* instr) const {
return (instr->Ra() == kZeroRegCode);
}
bool IsMovzMovnImm(unsigned reg_size, uint64_t value);
+ int64_t code_address_offset() const { return code_address_offset_; }
+
protected:
void ResetOutput();
void AppendToOutput(const char* string, ...) PRINTF_CHECK(2, 3);
+ void set_code_address_offset(int64_t code_address_offset) {
+ code_address_offset_ = code_address_offset;
+ }
+
char* buffer_;
uint32_t buffer_pos_;
uint32_t buffer_size_;
bool own_buffer_;
+
+ int64_t code_address_offset_;
};
diff --git a/disas/libvixl/a64/instructions-a64.cc
b/disas/libvixl/a64/instructions-a64.cc
index 1f08c78..b091886 100644
--- a/disas/libvixl/a64/instructions-a64.cc
+++ b/disas/libvixl/a64/instructions-a64.cc
@@ -30,6 +30,20 @@
namespace vixl {
+// Floating-point infinity values.
+const float kFP32PositiveInfinity = rawbits_to_float(0x7f800000);
+const float kFP32NegativeInfinity = rawbits_to_float(0xff800000);
+const double kFP64PositiveInfinity =
+ rawbits_to_double(UINT64_C(0x7ff0000000000000));
+const double kFP64NegativeInfinity =
+ rawbits_to_double(UINT64_C(0xfff0000000000000));
+
+
+// The default NaN values (for FPCR.DN=1).
+const double kFP64DefaultNaN = rawbits_to_double(UINT64_C(0x7ff8000000000000));
+const float kFP32DefaultNaN = rawbits_to_float(0x7fc00000);
+
+
static uint64_t RotateRight(uint64_t value,
unsigned int rotate,
unsigned int width) {
@@ -54,6 +68,55 @@ static uint64_t RepeatBitsAcrossReg(unsigned reg_size,
}
+bool Instruction::IsLoad() const {
+ if (Mask(LoadStoreAnyFMask) != LoadStoreAnyFixed) {
+ return false;
+ }
+
+ if (Mask(LoadStorePairAnyFMask) == LoadStorePairAnyFixed) {
+ return Mask(LoadStorePairLBit) != 0;
+ } else {
+ LoadStoreOp op = static_cast<LoadStoreOp>(Mask(LoadStoreOpMask));
+ switch (op) {
+ case LDRB_w:
+ case LDRH_w:
+ case LDR_w:
+ case LDR_x:
+ case LDRSB_w:
+ case LDRSB_x:
+ case LDRSH_w:
+ case LDRSH_x:
+ case LDRSW_x:
+ case LDR_s:
+ case LDR_d: return true;
+ default: return false;
+ }
+ }
+}
+
+
+bool Instruction::IsStore() const {
+ if (Mask(LoadStoreAnyFMask) != LoadStoreAnyFixed) {
+ return false;
+ }
+
+ if (Mask(LoadStorePairAnyFMask) == LoadStorePairAnyFixed) {
+ return Mask(LoadStorePairLBit) == 0;
+ } else {
+ LoadStoreOp op = static_cast<LoadStoreOp>(Mask(LoadStoreOpMask));
+ switch (op) {
+ case STRB_w:
+ case STRH_w:
+ case STR_w:
+ case STR_x:
+ case STR_s:
+ case STR_d: return true;
+ default: return false;
+ }
+ }
+}
+
+
// Logical immediates can't encode zero, so a return value of zero is used to
// indicate a failure case. Specifically, where the constraints on imm_s are
// not met.
diff --git a/disas/libvixl/a64/instructions-a64.h
b/disas/libvixl/a64/instructions-a64.h
index 29f9722..f1d883c 100644
--- a/disas/libvixl/a64/instructions-a64.h
+++ b/disas/libvixl/a64/instructions-a64.h
@@ -96,6 +96,17 @@ const unsigned kDoubleExponentBits = 11;
const unsigned kFloatMantissaBits = 23;
const unsigned kFloatExponentBits = 8;
+// Floating-point infinity values.
+extern const float kFP32PositiveInfinity;
+extern const float kFP32NegativeInfinity;
+extern const double kFP64PositiveInfinity;
+extern const double kFP64NegativeInfinity;
+
+// The default NaN values (for FPCR.DN=1).
+extern const double kFP64DefaultNaN;
+extern const float kFP32DefaultNaN;
+
+
enum LSDataSize {
LSByte = 0,
LSHalfword = 1,
@@ -140,33 +151,33 @@ enum Reg31Mode {
class Instruction {
public:
- inline Instr InstructionBits() const {
+ Instr InstructionBits() const {
return *(reinterpret_cast<const Instr*>(this));
}
- inline void SetInstructionBits(Instr new_instr) {
+ void SetInstructionBits(Instr new_instr) {
*(reinterpret_cast<Instr*>(this)) = new_instr;
}
- inline int Bit(int pos) const {
+ int Bit(int pos) const {
return (InstructionBits() >> pos) & 1;
}
- inline uint32_t Bits(int msb, int lsb) const {
+ uint32_t Bits(int msb, int lsb) const {
return unsigned_bitextract_32(msb, lsb, InstructionBits());
}
- inline int32_t SignedBits(int msb, int lsb) const {
+ int32_t SignedBits(int msb, int lsb) const {
int32_t bits = *(reinterpret_cast<const int32_t*>(this));
return signed_bitextract_32(msb, lsb, bits);
}
- inline Instr Mask(uint32_t mask) const {
+ Instr Mask(uint32_t mask) const {
return InstructionBits() & mask;
}
#define DEFINE_GETTER(Name, HighBit, LowBit, Func) \
- inline int64_t Name() const { return Func(HighBit, LowBit); }
+ int64_t Name() const { return Func(HighBit, LowBit); }
INSTRUCTION_FIELDS_LIST(DEFINE_GETTER)
#undef DEFINE_GETTER
@@ -182,56 +193,64 @@ class Instruction {
float ImmFP32() const;
double ImmFP64() const;
- inline LSDataSize SizeLSPair() const {
+ LSDataSize SizeLSPair() const {
return CalcLSPairDataSize(
static_cast<LoadStorePairOp>(Mask(LoadStorePairMask)));
}
// Helpers.
- inline bool IsCondBranchImm() const {
+ bool IsCondBranchImm() const {
return Mask(ConditionalBranchFMask) == ConditionalBranchFixed;
}
- inline bool IsUncondBranchImm() const {
+ bool IsUncondBranchImm() const {
return Mask(UnconditionalBranchFMask) == UnconditionalBranchFixed;
}
- inline bool IsCompareBranch() const {
+ bool IsCompareBranch() const {
return Mask(CompareBranchFMask) == CompareBranchFixed;
}
- inline bool IsTestBranch() const {
+ bool IsTestBranch() const {
return Mask(TestBranchFMask) == TestBranchFixed;
}
- inline bool IsPCRelAddressing() const {
+ bool IsPCRelAddressing() const {
return Mask(PCRelAddressingFMask) == PCRelAddressingFixed;
}
- inline bool IsLogicalImmediate() const {
+ bool IsLogicalImmediate() const {
return Mask(LogicalImmediateFMask) == LogicalImmediateFixed;
}
- inline bool IsAddSubImmediate() const {
+ bool IsAddSubImmediate() const {
return Mask(AddSubImmediateFMask) == AddSubImmediateFixed;
}
- inline bool IsAddSubExtended() const {
+ bool IsAddSubExtended() const {
return Mask(AddSubExtendedFMask) == AddSubExtendedFixed;
}
- inline bool IsLoadOrStore() const {
+ bool IsLoadOrStore() const {
return Mask(LoadStoreAnyFMask) == LoadStoreAnyFixed;
}
- inline bool IsMovn() const {
+ bool IsLoad() const;
+ bool IsStore() const;
+
+ bool IsLoadLiteral() const {
+ // This includes PRFM_lit.
+ return Mask(LoadLiteralFMask) == LoadLiteralFixed;
+ }
+
+ bool IsMovn() const {
return (Mask(MoveWideImmediateMask) == MOVN_x) ||
(Mask(MoveWideImmediateMask) == MOVN_w);
}
// Indicate whether Rd can be the stack pointer or the zero register. This
// does not check that the instruction actually has an Rd field.
- inline Reg31Mode RdMode() const {
+ Reg31Mode RdMode() const {
// The following instructions use sp or wsp as Rd:
// Add/sub (immediate) when not setting the flags.
// Add/sub (extended) when not setting the flags.
@@ -260,7 +279,7 @@ class Instruction {
// Indicate whether Rn can be the stack pointer or the zero register. This
// does not check that the instruction actually has an Rn field.
- inline Reg31Mode RnMode() const {
+ Reg31Mode RnMode() const {
// The following instructions use sp or wsp as Rn:
// All loads and stores.
// Add/sub (immediate).
@@ -272,7 +291,7 @@ class Instruction {
return Reg31IsZeroRegister;
}
- inline ImmBranchType BranchType() const {
+ ImmBranchType BranchType() const {
if (IsCondBranchImm()) {
return CondBranchType;
} else if (IsUncondBranchImm()) {
@@ -296,55 +315,66 @@ class Instruction {
// Patch a literal load instruction to load from 'source'.
void SetImmLLiteral(const Instruction* source);
- inline uint8_t* LiteralAddress() const {
- int offset = ImmLLiteral() << kLiteralEntrySizeLog2;
- const uint8_t* address = reinterpret_cast<const uint8_t*>(this) + offset;
- // Note that the result is safely mutable only if the backing buffer is
- // safely mutable.
- return const_cast<uint8_t*>(address);
+ // Calculate the address of a literal referred to by a load-literal
+ // instruction, and return it as the specified type.
+ //
+ // The literal itself is safely mutable only if the backing buffer is safely
+ // mutable.
+ template <typename T>
+ T LiteralAddress() const {
+ uint64_t base_raw = reinterpret_cast<uintptr_t>(this);
+ ptrdiff_t offset = ImmLLiteral() << kLiteralEntrySizeLog2;
+ uint64_t address_raw = base_raw + offset;
+
+ // Cast the address using a C-style cast. A reinterpret_cast would be
+ // appropriate, but it can't cast one integral type to another.
+ T address = (T)(address_raw);
+
+ // Assert that the address can be represented by the specified type.
+ VIXL_ASSERT((uint64_t)(address) == address_raw);
+
+ return address;
}
- inline uint32_t Literal32() const {
+ uint32_t Literal32() const {
uint32_t literal;
- memcpy(&literal, LiteralAddress(), sizeof(literal));
-
+ memcpy(&literal, LiteralAddress<const void*>(), sizeof(literal));
return literal;
}
- inline uint64_t Literal64() const {
+ uint64_t Literal64() const {
uint64_t literal;
- memcpy(&literal, LiteralAddress(), sizeof(literal));
-
+ memcpy(&literal, LiteralAddress<const void*>(), sizeof(literal));
return literal;
}
- inline float LiteralFP32() const {
+ float LiteralFP32() const {
return rawbits_to_float(Literal32());
}
- inline double LiteralFP64() const {
+ double LiteralFP64() const {
return rawbits_to_double(Literal64());
}
- inline const Instruction* NextInstruction() const {
+ const Instruction* NextInstruction() const {
return this + kInstructionSize;
}
- inline const Instruction* InstructionAtOffset(int64_t offset) const {
+ const Instruction* InstructionAtOffset(int64_t offset) const {
VIXL_ASSERT(IsWordAligned(this + offset));
return this + offset;
}
- template<typename T> static inline Instruction* Cast(T src) {
+ template<typename T> static Instruction* Cast(T src) {
return reinterpret_cast<Instruction*>(src);
}
- template<typename T> static inline const Instruction* CastConst(T src) {
+ template<typename T> static const Instruction* CastConst(T src) {
return reinterpret_cast<const Instruction*>(src);
}
private:
- inline int ImmBranch() const;
+ int ImmBranch() const;
void SetPCRelImmTarget(const Instruction* target);
void SetBranchImmTarget(const Instruction* target);
diff --git a/disas/libvixl/globals.h b/disas/libvixl/globals.h
index e28dc66..0c24931 100644
--- a/disas/libvixl/globals.h
+++ b/disas/libvixl/globals.h
@@ -58,7 +58,7 @@ const int KBytes = 1024;
const int MBytes = 1024 * KBytes;
#define VIXL_ABORT() printf("in %s, line %i", __FILE__, __LINE__); abort()
-#ifdef DEBUG
+#ifdef VIXL_DEBUG
#define VIXL_ASSERT(condition) assert(condition)
#define VIXL_CHECK(condition) VIXL_ASSERT(condition)
#define VIXL_UNIMPLEMENTED() printf("UNIMPLEMENTED\t"); VIXL_ABORT()
diff --git a/disas/libvixl/utils.cc b/disas/libvixl/utils.cc
index 21965d7..80b132a 100644
--- a/disas/libvixl/utils.cc
+++ b/disas/libvixl/utils.cc
@@ -135,4 +135,17 @@ bool IsPowerOf2(int64_t value) {
return (value != 0) && ((value & (value - 1)) == 0);
}
+
+unsigned CountClearHalfWords(uint64_t imm, unsigned reg_size) {
+ VIXL_ASSERT((reg_size % 8) == 0);
+ int count = 0;
+ for (unsigned i = 0; i < (reg_size / 16); i++) {
+ if ((imm & 0xffff) == 0) {
+ count++;
+ }
+ imm >>= 16;
+ }
+ return count;
+}
+
} // namespace vixl
diff --git a/disas/libvixl/utils.h b/disas/libvixl/utils.h
index 1540c30..b440626 100644
--- a/disas/libvixl/utils.h
+++ b/disas/libvixl/utils.h
@@ -166,6 +166,8 @@ int CountSetBits(uint64_t value, int width);
uint64_t LowestSetBit(uint64_t value);
bool IsPowerOf2(int64_t value);
+unsigned CountClearHalfWords(uint64_t imm, unsigned reg_size);
+
// Pointer alignment
// TODO: rename/refactor to make it specific to instructions.
template<typename T>
@@ -174,14 +176,14 @@ bool IsWordAligned(T pointer) {
return ((intptr_t)(pointer) & 3) == 0;
}
-// Increment a pointer until it has the specified alignment.
+// Increment a pointer (up to 64 bits) until it has the specified alignment.
template<class T>
T AlignUp(T pointer, size_t alignment) {
// Use C-style casts to get static_cast behaviour for integral types (T), and
// reinterpret_cast behaviour for other types.
- uintptr_t pointer_raw = (uintptr_t)pointer;
- VIXL_STATIC_ASSERT(sizeof(pointer) == sizeof(pointer_raw));
+ uint64_t pointer_raw = (uint64_t)pointer;
+ VIXL_STATIC_ASSERT(sizeof(pointer) <= sizeof(pointer_raw));
size_t align_step = (alignment - pointer_raw) % alignment;
VIXL_ASSERT((pointer_raw + align_step) % alignment == 0);
@@ -189,14 +191,14 @@ T AlignUp(T pointer, size_t alignment) {
return (T)(pointer_raw + align_step);
}
-// Decrement a pointer until it has the specified alignment.
+// Decrement a pointer (up to 64 bits) until it has the specified alignment.
template<class T>
T AlignDown(T pointer, size_t alignment) {
// Use C-style casts to get static_cast behaviour for integral types (T), and
// reinterpret_cast behaviour for other types.
- uintptr_t pointer_raw = (uintptr_t)pointer;
- VIXL_STATIC_ASSERT(sizeof(pointer) == sizeof(pointer_raw));
+ uint64_t pointer_raw = (uint64_t)pointer;
+ VIXL_STATIC_ASSERT(sizeof(pointer) <= sizeof(pointer_raw));
size_t align_step = pointer_raw % alignment;
VIXL_ASSERT((pointer_raw - align_step) % alignment == 0);
--
1.9.1