dart::PcRelativePatternBase Class Reference

#include <instructions_arm64.h>

Inheritance diagram for dart::PcRelativePatternBase:

Public Member Functions
	PcRelativePatternBase (uword pc)
int32_t	distance ()
void	set_distance (int32_t distance)
bool	IsValid () const
	PcRelativePatternBase (uword pc)
int32_t	distance ()
void	set_distance (int32_t distance)
bool	IsValid () const
Public Member Functions inherited from dart::ValueObject
	ValueObject ()
	~ValueObject ()

Static Public Attributes
static constexpr intptr_t	kLowerCallingRange = -(1 << 27)
static constexpr intptr_t	kUpperCallingRange = (1 << 27) - Instr::kInstrSize
static constexpr int	kLengthInBytes = 1 * Instr::kInstrSize
static constexpr intptr_t	kLengthInBytes = 8

Protected Attributes
uword	pc_

Detailed Description

Definition at line 193 of file instructions_arm64.h.

Constructor & Destructor Documentation

PcRelativePatternBase() [1/2]

dart::PcRelativePatternBase::PcRelativePatternBase ( uword  pc )

inlineexplicit

Definition at line 199 of file instructions_arm64.h.

: pc_(pc) {}

PcRelativePatternBase() [2/2]

dart::PcRelativePatternBase::PcRelativePatternBase ( uword  pc )

inlineexplicit

Definition at line 188 of file instructions_riscv.h.

: pc_(pc) {}

Member Function Documentation

distance() [1/2]

int32_t dart::PcRelativePatternBase::distance ( )

inline

Definition at line 203 of file instructions_arm64.h.

                     {
#if !defined(DART_PRECOMPILED_RUNTIME)
    return compiler::Assembler::DecodeImm26BranchOffset(
        *reinterpret_cast<int32_t*>(pc_));
#else
    UNREACHABLE();
    return 0;
#endif
  }

distance() [2/2]

int32_t dart::PcRelativePatternBase::distance ( )

inline

Definition at line 190 of file instructions_riscv.h.

                     {
    Instr auipc(LoadUnaligned(reinterpret_cast<uint32_t*>(pc_)));
    Instr jalr(LoadUnaligned(reinterpret_cast<uint32_t*>(pc_ + 4)));
    return auipc.utype_imm() + jalr.itype_imm();
  }

IsValid() [1/2]

bool dart::PcRelativePatternBase::IsValid

(

)

const

IsValid() [2/2]

bool dart::PcRelativePatternBase::IsValid

(

)

const

set_distance() [1/2]

void dart::PcRelativePatternBase::set_distance ( int32_t  distance )

inline

Definition at line 213 of file instructions_arm64.h.

                                      {
#if !defined(DART_PRECOMPILED_RUNTIME)
    int32_t* word = reinterpret_cast<int32_t*>(pc_);
    *word = compiler::Assembler::EncodeImm26BranchOffset(distance, *word);
#else
    UNREACHABLE();
#endif
  }

set_distance() [2/2]

void dart::PcRelativePatternBase::set_distance ( int32_t  distance )

inline

Definition at line 196 of file instructions_riscv.h.

                                      {
    Instr auipc(LoadUnaligned(reinterpret_cast<uint32_t*>(pc_)));
    Instr jalr(LoadUnaligned(reinterpret_cast<uint32_t*>(pc_ + 4)));
    intx_t imm = distance;
    intx_t lo = ImmLo(imm);
    intx_t hi = ImmHi(imm);
    StoreUnaligned(reinterpret_cast<uint32_t*>(pc_), EncodeUTypeImm(hi) |
                                                         EncodeRd(auipc.rd()) |
                                                         EncodeOpcode(AUIPC));
    StoreUnaligned(reinterpret_cast<uint32_t*>(pc_ + 4),
                   EncodeITypeImm(lo) | EncodeRs1(jalr.rs1()) |
                       EncodeFunct3(F3_0) | EncodeRd(jalr.rd()) |
                       EncodeOpcode(JALR));
  }

Member Data Documentation

kLengthInBytes [1/2]

constexpr int dart::PcRelativePatternBase::kLengthInBytes = 1 * Instr::kInstrSize

staticconstexpr

Definition at line 201 of file instructions_arm64.h.

kLengthInBytes [2/2]

constexpr intptr_t dart::PcRelativePatternBase::kLengthInBytes = 8

staticconstexpr

Definition at line 182 of file instructions_riscv.h.

kLowerCallingRange

static constexpr intptr_t dart::PcRelativePatternBase::kLowerCallingRange = -(1 << 27)

staticconstexpr

Definition at line 196 of file instructions_arm64.h.

kUpperCallingRange

static constexpr intptr_t dart::PcRelativePatternBase::kUpperCallingRange = (1 << 27) - Instr::kInstrSize

staticconstexpr

Definition at line 197 of file instructions_arm64.h.

pc_

uword dart::PcRelativePatternBase::pc_

protected

Definition at line 225 of file instructions_arm64.h.

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The documentation for this class was generated from the following files:

• third_party/dart-lang/sdk/runtime/vm/instructions_arm64.h
• third_party/dart-lang/sdk/runtime/vm/instructions_riscv.h