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dart / sdk.git / df31d872aa633ab47145eaff10b48693797ed698 / . / runtime / vm / compiler / assembler / assembler_riscv.h
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// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#ifndef RUNTIME_VM_COMPILER_ASSEMBLER_ASSEMBLER_RISCV_H_
#define RUNTIME_VM_COMPILER_ASSEMBLER_ASSEMBLER_RISCV_H_
#if defined(DART_PRECOMPILED_RUNTIME)
#error "AOT runtime should not use compiler sources (including header files)"
#endif // defined(DART_PRECOMPILED_RUNTIME)
#ifndef RUNTIME_VM_COMPILER_ASSEMBLER_ASSEMBLER_H_
#error Do not include assembler_riscv.h directly; use assembler.h instead.
#endif
#include <functional>
#include "platform/assert.h"
#include "platform/utils.h"
#include "vm/class_id.h"
#include "vm/compiler/assembler/assembler_base.h"
#include "vm/constants.h"
#include "vm/hash_map.h"
#include "vm/simulator.h"
namespace dart {
// Forward declarations.
class FlowGraphCompiler;
class RuntimeEntry;
class RegisterSet;
namespace compiler {
class Address {
public:
Address(Register base, intptr_t offset) : base_(base), offset_(offset) {}
explicit Address(Register base) : base_(base), offset_(0) {}
// Prevent implicit conversion of Register to intptr_t.
Address(Register base, Register index) = delete;
Register base() const { return base_; }
intptr_t offset() const { return offset_; }
private:
Register base_;
intptr_t offset_;
};
class FieldAddress : public Address {
public:
FieldAddress(Register base, intptr_t offset)
: Address(base, offset - kHeapObjectTag) {}
// Prevent implicit conversion of Register to intptr_t.
FieldAddress(Register base, Register index) = delete;
};
// All functions produce exactly one instruction.
class MicroAssembler : public AssemblerBase {
public:
MicroAssembler(ObjectPoolBuilder* object_pool_builder,
intptr_t far_branch_level,
ExtensionSet extensions);
~MicroAssembler();
#if defined(TESTING)
void SetExtensions(ExtensionSet extensions) { extensions_ = extensions; }
#endif
bool Supports(Extension extension) const {
return extensions_.Includes(extension);
}
bool Supports(ExtensionSet extensions) const {
return extensions_.IncludesAll(extensions);
}
intptr_t far_branch_level() const { return far_branch_level_; }
void set_far_branch_level(intptr_t level) { far_branch_level_ = level; }
void Bind(Label* label);
// ==== RV32I ====
void lui(Register rd, intptr_t imm);
void lui_fixed(Register rd, intptr_t imm);
void auipc(Register rd, intptr_t imm);
void jal(Register rd, Label* label, JumpDistance d = kFarJump);
void jal(Label* label, JumpDistance d = kFarJump) { jal(RA, label, d); }
void j(Label* label, JumpDistance d = kFarJump) { jal(ZR, label, d); }
void jalr(Register rd, Register rs1, intptr_t offset = 0);
void jalr_fixed(Register rd, Register rs1, intptr_t offset);
void jalr(Register rs1, intptr_t offset = 0) { jalr(RA, rs1, offset); }
void jr(Register rs1, intptr_t offset = 0) { jalr(ZR, rs1, offset); }
void ret() { jalr(ZR, RA, 0); }
void beq(Register rs1, Register rs2, Label* l, JumpDistance d = kFarJump);
void bne(Register rs1, Register rs2, Label* l, JumpDistance d = kFarJump);
void blt(Register rs1, Register rs2, Label* l, JumpDistance d = kFarJump);
void bge(Register rs1, Register rs2, Label* l, JumpDistance d = kFarJump);
void bgt(Register rs1, Register rs2, Label* l, JumpDistance d = kFarJump) {
blt(rs2, rs1, l, d);
}
void ble(Register rs1, Register rs2, Label* l, JumpDistance d = kFarJump) {
bge(rs2, rs1, l, d);
}
void bltu(Register rs1, Register rs2, Label* l, JumpDistance d = kFarJump);
void bgeu(Register rs1, Register rs2, Label* l, JumpDistance d = kFarJump);
void bgtu(Register rs1, Register rs2, Label* l, JumpDistance d = kFarJump) {
bltu(rs2, rs1, l, d);
}
void bleu(Register rs1, Register rs2, Label* l, JumpDistance d = kFarJump) {
bgeu(rs2, rs1, l, d);
}
void lb(Register rd, Address addr);
void lh(Register rd, Address addr);
void lw(Register rd, Address addr);
void lbu(Register rd, Address addr);
void lhu(Register rd, Address addr);
void sb(Register rs2, Address addr);
void sh(Register rs2, Address addr);
void sw(Register rs2, Address addr);
void addi(Register rd, Register rs1, intptr_t imm);
void subi(Register rd, Register rs1, intptr_t imm) { addi(rd, rs1, -imm); }
void slti(Register rd, Register rs1, intptr_t imm);
void sltiu(Register rd, Register rs1, intptr_t imm);
void xori(Register rd, Register rs1, intptr_t imm);
void ori(Register rd, Register rs1, intptr_t imm);
void andi(Register rd, Register rs1, intptr_t imm);
void slli(Register rd, Register rs1, intptr_t shamt);
void srli(Register rd, Register rs1, intptr_t shamt);
void srai(Register rd, Register rs1, intptr_t shamt);
void add(Register rd, Register rs1, Register rs2);
void sub(Register rd, Register rs1, Register rs2);
void sll(Register rd, Register rs1, Register rs2);
void slt(Register rd, Register rs1, Register rs2);
void sltu(Register rd, Register rs1, Register rs2);
void xor_(Register rd, Register rs1, Register rs2);
void srl(Register rd, Register rs1, Register rs2);
void sra(Register rd, Register rs1, Register rs2);
void or_(Register rd, Register rs1, Register rs2);
void and_(Register rd, Register rs1, Register rs2);
void fence(HartEffects predecessor, HartEffects successor);
void fence() { fence(kAll, kAll); }
void fencei();
void ecall();
void ebreak(); // Causes SIGTRAP(5).
void csrrw(Register rd, uint32_t csr, Register rs1);
void csrrs(Register rd, uint32_t csr, Register rs1);
void csrrc(Register rd, uint32_t csr, Register rs1);
void csrr(Register rd, uint32_t csr) { csrrs(rd, csr, ZR); }
void csrw(uint32_t csr, Register rs) { csrrw(ZR, csr, rs); }
void csrs(uint32_t csr, Register rs) { csrrs(ZR, csr, rs); }
void csrc(uint32_t csr, Register rs) { csrrc(ZR, csr, rs); }
void csrrwi(Register rd, uint32_t csr, uint32_t imm);
void csrrsi(Register rd, uint32_t csr, uint32_t imm);
void csrrci(Register rd, uint32_t csr, uint32_t imm);
void csrwi(uint32_t csr, uint32_t imm) { csrrwi(ZR, csr, imm); }
void csrsi(uint32_t csr, uint32_t imm) { csrrsi(ZR, csr, imm); }
void csrci(uint32_t csr, uint32_t imm) { csrrci(ZR, csr, imm); }
void trap(); // Permanently reserved illegal instruction; causes SIGILL(4).
void nop() { addi(ZR, ZR, 0); }
void li(Register rd, intptr_t imm) { addi(rd, ZR, imm); }
void mv(Register rd, Register rs) { addi(rd, rs, 0); }
void not_(Register rd, Register rs) { xori(rd, rs, -1); }
void neg(Register rd, Register rs) { sub(rd, ZR, rs); }
void snez(Register rd, Register rs) { sltu(rd, ZR, rs); }
void seqz(Register rd, Register rs) { sltiu(rd, rs, 1); }
void sltz(Register rd, Register rs) { slt(rd, rs, ZR); }
void sgtz(Register rd, Register rs) { slt(rd, ZR, rs); }
void beqz(Register rs, Label* label, JumpDistance distance = kFarJump) {
beq(rs, ZR, label, distance);
}
void bnez(Register rs, Label* label, JumpDistance distance = kFarJump) {
bne(rs, ZR, label, distance);
}
void blez(Register rs, Label* label, JumpDistance distance = kFarJump) {
bge(ZR, rs, label, distance);
}
void bgez(Register rs, Label* label, JumpDistance distance = kFarJump) {
bge(rs, ZR, label, distance);
}
void bltz(Register rs, Label* label, JumpDistance distance = kFarJump) {
blt(rs, ZR, label, distance);
}
void bgtz(Register rs, Label* label, JumpDistance distance = kFarJump) {
blt(ZR, rs, label, distance);
}
// ==== RV64I ====
#if XLEN >= 64
void lwu(Register rd, Address addr);
void ld(Register rd, Address addr);
void sd(Register rs2, Address addr);
void addiw(Register rd, Register rs1, intptr_t imm);
void subiw(Register rd, Register rs1, intptr_t imm) { addiw(rd, rs1, -imm); }
void slliw(Register rd, Register rs1, intptr_t shamt);
void srliw(Register rd, Register rs1, intptr_t shamt);
void sraiw(Register rd, Register rs1, intptr_t shamt);
void addw(Register rd, Register rs1, Register rs2);
void subw(Register rd, Register rs1, Register rs2);
void sllw(Register rd, Register rs1, Register rs2);
void srlw(Register rd, Register rs1, Register rs2);
void sraw(Register rd, Register rs1, Register rs2);
void negw(Register rd, Register rs) { subw(rd, ZR, rs); }
void sextw(Register rd, Register rs) { addiw(rd, rs, 0); }
#endif // XLEN >= 64
#if XLEN == 32
void lx(Register rd, Address addr) { lw(rd, addr); }
void sx(Register rs2, Address addr) { sw(rs2, addr); }
#elif XLEN == 64
void lx(Register rd, Address addr) { ld(rd, addr); }
void sx(Register rs2, Address addr) { sd(rs2, addr); }
#elif XLEN == 128
void lx(Register rd, Address addr) { lq(rd, addr); }
void sx(Register rs2, Address addr) { sq(rs2, addr); }
#endif
// ==== RV32M ====
void mul(Register rd, Register rs1, Register rs2);
void mulh(Register rd, Register rs1, Register rs2);
void mulhsu(Register rd, Register rs1, Register rs2);
void mulhu(Register rd, Register rs1, Register rs2);
void div(Register rd, Register rs1, Register rs2);
void divu(Register rd, Register rs1, Register rs2);
void rem(Register rd, Register rs1, Register rs2);
void remu(Register rd, Register rs1, Register rs2);
// ==== RV64M ====
#if XLEN >= 64
void mulw(Register rd, Register rs1, Register rs2);
void divw(Register rd, Register rs1, Register rs2);
void divuw(Register rd, Register rs1, Register rs2);
void remw(Register rd, Register rs1, Register rs2);
void remuw(Register rd, Register rs1, Register rs2);
#endif // XLEN >= 64
// ==== RV32A ====
void lrw(Register rd,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void scw(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amoswapw(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amoaddw(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amoxorw(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amoandw(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amoorw(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amominw(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amomaxw(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amominuw(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amomaxuw(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
// ==== RV64A ====
#if XLEN >= 64
void lrd(Register rd,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void scd(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amoswapd(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amoaddd(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amoxord(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amoandd(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amoord(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amomind(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amomaxd(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amominud(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
void amomaxud(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed);
#endif // XLEN >= 64
#if XLEN == 32
void lr(Register rd,
Address addr,
std::memory_order order = std::memory_order_relaxed) {
lrw(rd, addr, order);
}
void sc(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed) {
scw(rd, rs2, addr, order);
}
#elif XLEN == 64
void lr(Register rd,
Address addr,
std::memory_order order = std::memory_order_relaxed) {
lrd(rd, addr, order);
}
void sc(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed) {
scd(rd, rs2, addr, order);
}
#elif XLEN == 128
void lr(Register rd,
Address addr,
std::memory_order order = std::memory_order_relaxed) {
lrq(rd, addr, order);
}
void sc(Register rd,
Register rs2,
Address addr,
std::memory_order order = std::memory_order_relaxed) {
scq(rd, rs2, addr, order);
}
#endif
// ==== RV32F ====
void flw(FRegister rd, Address addr);
void fsw(FRegister rs2, Address addr);
// rd := (rs1 * rs2) + rs3
void fmadds(FRegister rd,
FRegister rs1,
FRegister rs2,
FRegister rs3,
RoundingMode rounding = RNE);
// rd := (rs1 * rs2) - rs3
void fmsubs(FRegister rd,
FRegister rs1,
FRegister rs2,
FRegister rs3,
RoundingMode rounding = RNE);
// rd := -(rs1 * rs2) + rs3
void fnmsubs(FRegister rd,
FRegister rs1,
FRegister rs2,
FRegister rs3,
RoundingMode rounding = RNE);
// rd := -(rs1 * rs2) - rs3
void fnmadds(FRegister rd,
FRegister rs1,
FRegister rs2,
FRegister rs3,
RoundingMode rounding = RNE);
void fadds(FRegister rd,
FRegister rs1,
FRegister rs2,
RoundingMode rounding = RNE);
void fsubs(FRegister rd,
FRegister rs1,
FRegister rs2,
RoundingMode rounding = RNE);
void fmuls(FRegister rd,
FRegister rs1,
FRegister rs2,
RoundingMode rounding = RNE);
void fdivs(FRegister rd,
FRegister rs1,
FRegister rs2,
RoundingMode rounding = RNE);
void fsqrts(FRegister rd, FRegister rs1, RoundingMode rounding = RNE);
void fsgnjs(FRegister rd, FRegister rs1, FRegister rs2);
void fsgnjns(FRegister rd, FRegister rs1, FRegister rs2);
void fsgnjxs(FRegister rd, FRegister rs1, FRegister rs2);
void fmins(FRegister rd, FRegister rs1, FRegister rs2);
void fmaxs(FRegister rd, FRegister rs1, FRegister rs2);
void feqs(Register rd, FRegister rs1, FRegister rs2);
void flts(Register rd, FRegister rs1, FRegister rs2);
void fles(Register rd, FRegister rs1, FRegister rs2);
void fclasss(Register rd, FRegister rs1);
// int32_t <- float
void fcvtws(Register rd, FRegister rs1, RoundingMode rounding = RNE);
// uint32_t <- float
void fcvtwus(Register rd, FRegister rs1, RoundingMode rounding = RNE);
// float <- int32_t
void fcvtsw(FRegister rd, Register rs1, RoundingMode rounding = RNE);
// float <- uint32_t
void fcvtswu(FRegister rd, Register rs1, RoundingMode rounding = RNE);
void fmvs(FRegister rd, FRegister rs) { fsgnjs(rd, rs, rs); }
void fabss(FRegister rd, FRegister rs) { fsgnjxs(rd, rs, rs); }
void fnegs(FRegister rd, FRegister rs) { fsgnjns(rd, rs, rs); }
// xlen <--bit_cast-- float
void fmvxw(Register rd, FRegister rs1);
// float <--bit_cast-- xlen
void fmvwx(FRegister rd, Register rs1);
// ==== RV64F ====
#if XLEN >= 64
// int64_t <- double
void fcvtls(Register rd, FRegister rs1, RoundingMode rounding = RNE);
// uint64_t <- double
void fcvtlus(Register rd, FRegister rs1, RoundingMode rounding = RNE);
// double <- int64_t
void fcvtsl(FRegister rd, Register rs1, RoundingMode rounding = RNE);
// double <- uint64_t
void fcvtslu(FRegister rd, Register rs1, RoundingMode rounding = RNE);
#endif // XLEN >= 64
// ==== RV32D ====
void fld(FRegister rd, Address addr);
void fsd(FRegister rs2, Address addr);
// rd := (rs1 * rs2) + rs3
void fmaddd(FRegister rd,
FRegister rs1,
FRegister rs2,
FRegister rs3,
RoundingMode rounding = RNE);
// rd := (rs1 * rs2) - rs3
void fmsubd(FRegister rd,
FRegister rs1,
FRegister rs2,
FRegister rs3,
RoundingMode rounding = RNE);
// rd := -(rs1 * rs2) - rs3
void fnmsubd(FRegister rd,
FRegister rs1,
FRegister rs2,
FRegister rs3,
RoundingMode rounding = RNE);
// rd := -(rs1 * rs2) + rs3
void fnmaddd(FRegister rd,
FRegister rs1,
FRegister rs2,
FRegister rs3,
RoundingMode rounding = RNE);
void faddd(FRegister rd,
FRegister rs1,
FRegister rs2,
RoundingMode rounding = RNE);
void fsubd(FRegister rd,
FRegister rs1,
FRegister rs2,
RoundingMode rounding = RNE);
void fmuld(FRegister rd,
FRegister rs1,
FRegister rs2,
RoundingMode rounding = RNE);
void fdivd(FRegister rd,
FRegister rs1,
FRegister rs2,
RoundingMode rounding = RNE);
void fsqrtd(FRegister rd, FRegister rs1, RoundingMode rounding = RNE);
void fsgnjd(FRegister rd, FRegister rs1, FRegister rs2);
void fsgnjnd(FRegister rd, FRegister rs1, FRegister rs2);
void fsgnjxd(FRegister rd, FRegister rs1, FRegister rs2);
void fmind(FRegister rd, FRegister rs1, FRegister rs2);
void fmaxd(FRegister rd, FRegister rs1, FRegister rs2);
void fcvtsd(FRegister rd, FRegister rs1, RoundingMode rounding = RNE);
void fcvtds(FRegister rd, FRegister rs1);
void feqd(Register rd, FRegister rs1, FRegister rs2);
void fltd(Register rd, FRegister rs1, FRegister rs2);
void fled(Register rd, FRegister rs1, FRegister rs2);
void fclassd(Register rd, FRegister rs1);
// int32_t <- double
void fcvtwd(Register rd, FRegister rs1, RoundingMode rounding = RNE);
// uint32_t <- double
void fcvtwud(Register rd, FRegister rs1, RoundingMode rounding = RNE);
// double <- int32_t
void fcvtdw(FRegister rd, Register rs1, RoundingMode rounding = RNE);
// double <- uint32_t
void fcvtdwu(FRegister rd, Register rs1, RoundingMode rounding = RNE);
void fmvd(FRegister rd, FRegister rs) { fsgnjd(rd, rs, rs); }
void fabsd(FRegister rd, FRegister rs) { fsgnjxd(rd, rs, rs); }
void fnegd(FRegister rd, FRegister rs) { fsgnjnd(rd, rs, rs); }
// ==== RV64D ====
#if XLEN >= 64
// int64_t <- double
void fcvtld(Register rd, FRegister rs1, RoundingMode rounding = RNE);
// uint64_t <- double
void fcvtlud(Register rd, FRegister rs1, RoundingMode rounding = RNE);
// xlen <--bit_cast-- double
void fmvxd(Register rd, FRegister rs1);
// double <- int64_t
void fcvtdl(FRegister rd, Register rs1, RoundingMode rounding = RNE);
// double <- uint64_t
void fcvtdlu(FRegister rd, Register rs1, RoundingMode rounding = RNE);
// double <--bit_cast-- xlen
void fmvdx(FRegister rd, Register rs1);
#endif // XLEN >= 64
// ==== Dart Simulator Debugging ====
void SimulatorPrintObject(Register rs1);
private:
// ==== RV32/64C ====
void c_lwsp(Register rd, Address addr);
#if XLEN == 32
void c_flwsp(FRegister rd, Address addr);
#else
void c_ldsp(Register rd, Address addr);
#endif
void c_fldsp(FRegister rd, Address addr);
void c_swsp(Register rs2, Address addr);
#if XLEN == 32
void c_fswsp(FRegister rs2, Address addr);
#else
void c_sdsp(Register rs2, Address addr);
#endif
void c_fsdsp(FRegister rs2, Address addr);
void c_lw(Register rd, Address addr);
void c_ld(Register rd, Address addr);
void c_flw(FRegister rd, Address addr);
void c_fld(FRegister rd, Address addr);
void c_sw(Register rs2, Address addr);
void c_sd(Register rs2, Address addr);
void c_fsw(FRegister rs2, Address addr);
void c_fsd(FRegister rs2, Address addr);
void c_j(Label* label);
#if XLEN == 32
void c_jal(Label* label);
#endif
void c_jr(Register rs1);
void c_jalr(Register rs1);
void c_beqz(Register rs1p, Label* label);
void c_bnez(Register rs1p, Label* label);
void c_li(Register rd, intptr_t imm);
void c_lui(Register rd, uintptr_t imm);
void c_addi(Register rd, Register rs1, intptr_t imm);
#if XLEN >= 64
void c_addiw(Register rd, Register rs1, intptr_t imm);
#endif
void c_addi16sp(Register rd, Register rs1, intptr_t imm);
void c_addi4spn(Register rdp, Register rs1, intptr_t imm);
void c_slli(Register rd, Register rs1, intptr_t imm);
void c_srli(Register rd, Register rs1, intptr_t imm);
void c_srai(Register rd, Register rs1, intptr_t imm);
void c_andi(Register rd, Register rs1, intptr_t imm);
void c_mv(Register rd, Register rs2);
void c_add(Register rd, Register rs1, Register rs2);
void c_and(Register rd, Register rs1, Register rs2);
void c_or(Register rd, Register rs1, Register rs2);
void c_xor(Register rd, Register rs1, Register rs2);
void c_sub(Register rd, Register rs1, Register rs2);
#if XLEN >= 64
void c_addw(Register rd, Register rs1, Register rs2);
void c_subw(Register rd, Register rs1, Register rs2);
#endif
void c_nop();
void c_ebreak();
protected:
intptr_t UpdateCBOffset(intptr_t branch_position, intptr_t new_offset);
intptr_t UpdateCJOffset(intptr_t branch_position, intptr_t new_offset);
intptr_t UpdateBOffset(intptr_t branch_position, intptr_t new_offset);
intptr_t UpdateJOffset(intptr_t branch_position, intptr_t new_offset);
intptr_t UpdateFarOffset(intptr_t branch_position, intptr_t new_offset);
intptr_t Position() { return buffer_.Size(); }
void EmitBranch(Register rs1,
Register rs2,
Label* label,
Funct3 func,
JumpDistance distance);
void EmitJump(Register rd, Label* label, Opcode op, JumpDistance distance);
void EmitCBranch(Register rs1p, Label* label, COpcode op);
void EmitCJump(Label* label, COpcode op);
void EmitRType(Funct5 funct5,
std::memory_order order,
Register rs2,
Register rs1,
Funct3 funct3,
Register rd,
Opcode opcode);
void EmitRType(Funct7 funct7,
Register rs2,
Register rs1,
Funct3 funct3,
Register rd,
Opcode opcode);
void EmitRType(Funct7 funct7,
FRegister rs2,
FRegister rs1,
Funct3 funct3,
FRegister rd,
Opcode opcode);
void EmitRType(Funct7 funct7,
FRegister rs2,
FRegister rs1,
RoundingMode round,
FRegister rd,
Opcode opcode);
void EmitRType(Funct7 funct7,
FRegister rs2,
Register rs1,
RoundingMode round,
FRegister rd,
Opcode opcode);
void EmitRType(Funct7 funct7,
FRegister rs2,
Register rs1,
Funct3 funct3,
FRegister rd,
Opcode opcode);
void EmitRType(Funct7 funct7,
FRegister rs2,
FRegister rs1,
Funct3 funct3,
Register rd,
Opcode opcode);
void EmitRType(Funct7 funct7,
FRegister rs2,
FRegister rs1,
RoundingMode round,
Register rd,
Opcode opcode);
void EmitRType(Funct7 funct7,
intptr_t shamt,
Register rs1,
Funct3 funct3,
Register rd,
Opcode opcode);
void EmitR4Type(FRegister rs3,
Funct2 funct2,
FRegister rs2,
FRegister rs1,
RoundingMode round,
FRegister rd,
Opcode opcode);
void EmitIType(intptr_t imm,
Register rs1,
Funct3 funct3,
Register rd,
Opcode opcode);
void EmitIType(intptr_t imm,
Register rs1,
Funct3 funct3,
FRegister rd,
Opcode opcode);
void EmitSType(intptr_t imm,
Register rs2,
Register rs1,
Funct3 funct3,
Opcode opcode);
void EmitSType(intptr_t imm,
FRegister rs2,
Register rs1,
Funct3 funct3,
Opcode opcode);
void EmitBType(intptr_t imm,
Register rs2,
Register rs1,
Funct3 funct3,
Opcode opcode);
void EmitUType(intptr_t imm, Register rd, Opcode opcode);
void EmitJType(intptr_t imm, Register rd, Opcode opcode);
uint16_t Read16(intptr_t position) {
return buffer_.Load<uint16_t>(position);
}
void Write16(intptr_t position, uint16_t instruction) {
return buffer_.Store<uint16_t>(position, instruction);
}
void Emit16(uint16_t instruction) {
AssemblerBuffer::EnsureCapacity ensured(&buffer_);
buffer_.Emit<uint16_t>(instruction);
}
uint32_t Read32(intptr_t position) {
return buffer_.Load<uint32_t>(position);
}
void Write32(intptr_t position, uint32_t instruction) {
return buffer_.Store<uint32_t>(position, instruction);
}
public:
void Emit32(uint32_t instruction) {
AssemblerBuffer::EnsureCapacity ensured(&buffer_);
buffer_.Emit<uint32_t>(instruction);
}
void Emit64(uint64_t instruction) {
AssemblerBuffer::EnsureCapacity ensured(&buffer_);
buffer_.Emit<uint64_t>(instruction);
}
protected:
ExtensionSet extensions_;
intptr_t far_branch_level_;
};
class Assembler : public MicroAssembler {
public:
explicit Assembler(ObjectPoolBuilder* object_pool_builder,
intptr_t far_branch_level = 0);
~Assembler() {}
void PushRegister(Register r);
void PopRegister(Register r);
void PushRegisterPair(Register r0, Register r1);
void PopRegisterPair(Register r0, Register r1);
void PushRegisters(const RegisterSet& registers);
void PopRegisters(const RegisterSet& registers);
// Push all registers which are callee-saved according to the ARM64 ABI.
void PushNativeCalleeSavedRegisters();
// Pop all registers which are callee-saved according to the ARM64 ABI.
void PopNativeCalleeSavedRegisters();
void ExtendValue(Register rd, Register rn, OperandSize sz) override;
void ExtendAndSmiTagValue(Register rd,
Register rn,
OperandSize sz = kWordBytes) override;
void Drop(intptr_t stack_elements) {
ASSERT(stack_elements >= 0);
if (stack_elements > 0) {
AddImmediate(SP, SP, stack_elements * target::kWordSize);
}
}
void Bind(Label* label) { MicroAssembler::Bind(label); }
// Unconditional jump to a given label.
void Jump(Label* label, JumpDistance distance = kFarJump) {
j(label, distance);
}
// Unconditional jump to a given address in memory. Clobbers TMP.
void Jump(const Address& address);
void LoadField(Register dst, const FieldAddress& address) override;
void LoadCompressedField(Register dst, const FieldAddress& address) override {
LoadCompressed(dst, address);
}
void LoadMemoryValue(Register dst, Register base, int32_t offset) {
LoadFromOffset(dst, base, offset, kWordBytes);
}
void StoreMemoryValue(Register src, Register base, int32_t offset) {
StoreToOffset(src, base, offset, kWordBytes);
}
#if defined(USING_THREAD_SANITIZER)
void TsanLoadAcquire(Register addr);
void TsanStoreRelease(Register addr);
#endif
void LoadAcquire(Register dst, Register address, int32_t offset = 0);
void LoadAcquireCompressed(Register dst,
Register address,
int32_t offset = 0);
void StoreRelease(Register src,
Register address,
int32_t offset = 0) override;
void StoreReleaseCompressed(Register src,
Register address,
int32_t offset = 0);
void CompareWithFieldValue(Register value, FieldAddress address) {
CompareWithMemoryValue(value, address);
}
void CompareWithCompressedFieldFromOffset(Register value,
Register base,
int32_t offset);
void CompareWithMemoryValue(Register value,
Address address,
OperandSize sz = kWordBytes);
void CompareFunctionTypeNullabilityWith(Register type, int8_t value) override;
void CompareTypeNullabilityWith(Register type, int8_t value) override;
// Debugging and bringup support.
void Breakpoint() override { trap(); }
void SetPrologueOffset() {
if (prologue_offset_ == -1) {
prologue_offset_ = CodeSize();
}
}
void ReserveAlignedFrameSpace(intptr_t frame_space);
// In debug mode, this generates code to check that:
// FP + kExitLinkSlotFromEntryFp == SP
// or triggers breakpoint otherwise.
void EmitEntryFrameVerification();
// Instruction pattern from entrypoint is used in Dart frame prologs
// to set up the frame and save a PC which can be used to figure out the
// RawInstruction object corresponding to the code running in the frame.
static const intptr_t kEntryPointToPcMarkerOffset = 0;
static intptr_t EntryPointToPcMarkerOffset() {
return kEntryPointToPcMarkerOffset;
}
// On some other platforms, we draw a distinction between safe and unsafe
// smis.
static bool IsSafe(const Object& object) { return true; }
static bool IsSafeSmi(const Object& object) { return target::IsSmi(object); }
void CompareRegisters(Register rn, Register rm);
void CompareObjectRegisters(Register rn, Register rm);
void TestRegisters(Register rn, Register rm);
// Branches to the given label if the condition holds.
void BranchIf(Condition condition,
Label* label,
JumpDistance distance = kFarJump);
void BranchIfZero(Register rn,
Label* label,
JumpDistance distance = kFarJump);
void SetIf(Condition condition, Register rd);
void SmiUntag(Register reg) { SmiUntag(reg, reg); }
void SmiUntag(Register dst, Register src) { srai(dst, src, kSmiTagSize); }
void SmiTag(Register reg) override { SmiTag(reg, reg); }
void SmiTag(Register dst, Register src) { slli(dst, src, kSmiTagSize); }
void BranchIfNotSmi(Register reg,
Label* label,
JumpDistance distance = kFarJump);
void BranchIfSmi(Register reg,
Label* label,
JumpDistance distance = kFarJump);
void Jump(const Code& code,
Register pp,
ObjectPoolBuilderEntry::Patchability patchable =
ObjectPoolBuilderEntry::kNotPatchable);
void JumpAndLink(const Code& code,
ObjectPoolBuilderEntry::Patchability patchable =
ObjectPoolBuilderEntry::kNotPatchable,
CodeEntryKind entry_kind = CodeEntryKind::kNormal);
void JumpAndLinkPatchable(const Code& code,
CodeEntryKind entry_kind = CodeEntryKind::kNormal) {
JumpAndLink(code, ObjectPoolBuilderEntry::kPatchable, entry_kind);
}
void JumpAndLinkToRuntime();
// Emit a call that shares its object pool entries with other calls
// that have the same equivalence marker.
void JumpAndLinkWithEquivalence(
const Code& code,
const Object& equivalence,
CodeEntryKind entry_kind = CodeEntryKind::kNormal);
void Call(Address target);
void Call(const Code& code) { JumpAndLink(code); }
void CallCFunction(Address target) { Call(target); }
void AddImmediate(Register dest, intx_t imm) {
AddImmediate(dest, dest, imm);
}
// Macros accepting a pp Register argument may attempt to load values from
// the object pool when possible. Unless you are sure that the untagged object
// pool pointer is in another register, or that it is not available at all,
// PP should be passed for pp. `dest` can be TMP2, `rn` cannot. `dest` can be
// TMP.
void AddImmediate(Register dest,
Register rn,
intx_t imm,
OperandSize sz = kWordBytes);
void AndImmediate(Register rd,
Register rn,
intx_t imm,
OperandSize sz = kWordBytes);
void OrImmediate(Register rd,
Register rn,
intx_t imm,
OperandSize sz = kWordBytes);
void XorImmediate(Register rd,
Register rn,
intx_t imm,
OperandSize sz = kWordBytes);
void TestImmediate(Register rn, intx_t imm, OperandSize sz = kWordBytes);
void CompareImmediate(Register rn, intx_t imm, OperandSize sz = kWordBytes);
void LoadFromOffset(Register dest,
const Address& address,
OperandSize sz = kWordBytes) override;
void LoadFromOffset(Register dest,
Register base,
int32_t offset,
OperandSize sz = kWordBytes);
void LoadFieldFromOffset(Register dest,
Register base,
int32_t offset,
OperandSize sz = kWordBytes) override {
LoadFromOffset(dest, base, offset - kHeapObjectTag, sz);
}
void LoadCompressedFieldFromOffset(Register dest,
Register base,
int32_t offset) override {
LoadCompressedFromOffset(dest, base, offset - kHeapObjectTag);
}
void LoadCompressedSmiFieldFromOffset(Register dest,
Register base,
int32_t offset) {
LoadCompressedSmiFromOffset(dest, base, offset - kHeapObjectTag);
}
// For loading indexed payloads out of tagged objects like Arrays. If the
// payload objects are word-sized, use TIMES_HALF_WORD_SIZE if the contents of
// [index] is a Smi, otherwise TIMES_WORD_SIZE if unboxed.
void LoadIndexedPayload(Register dest,
Register base,
int32_t payload_offset,
Register index,
ScaleFactor scale,
OperandSize sz = kWordBytes);
void LoadIndexedCompressed(Register dest,
Register base,
int32_t offset,
Register index);
void LoadSFromOffset(FRegister dest, Register base, int32_t offset);
void LoadDFromOffset(FRegister dest, Register base, int32_t offset);
void LoadDFieldFromOffset(FRegister dest, Register base, int32_t offset) {
LoadDFromOffset(dest, base, offset - kHeapObjectTag);
}
void LoadFromStack(Register dst, intptr_t depth);
void StoreToStack(Register src, intptr_t depth);
void CompareToStack(Register src, intptr_t depth);
void StoreToOffset(Register src,
const Address& address,
OperandSize sz = kWordBytes) override;
void StoreToOffset(Register src,
Register base,
int32_t offset,
OperandSize sz = kWordBytes);
void StoreFieldToOffset(Register src,
Register base,
int32_t offset,
OperandSize sz = kWordBytes) {
StoreToOffset(src, base, offset - kHeapObjectTag, sz);
}
void StoreSToOffset(FRegister src, Register base, int32_t offset);
void StoreDToOffset(FRegister src, Register base, int32_t offset);
void StoreDFieldToOffset(FRegister src, Register base, int32_t offset) {
StoreDToOffset(src, base, offset - kHeapObjectTag);
}
void LoadUnboxedDouble(FpuRegister dst, Register base, int32_t offset);
void StoreUnboxedDouble(FpuRegister src, Register base, int32_t offset);
void MoveUnboxedDouble(FpuRegister dst, FpuRegister src);
void LoadCompressed(Register dest, const Address& slot);
void LoadCompressedFromOffset(Register dest, Register base, int32_t offset);
void LoadCompressedSmi(Register dest, const Address& slot);
void LoadCompressedSmiFromOffset(Register dest,
Register base,
int32_t offset);
// Store into a heap object and apply the generational and incremental write
// barriers. All stores into heap objects must pass through this function or,
// if the value can be proven either Smi or old-and-premarked, its NoBarrier
// variants.
// Preserves object and value registers.
void StoreIntoObject(Register object,
const Address& dest,
Register value,
CanBeSmi can_value_be_smi = kValueCanBeSmi,
MemoryOrder memory_order = kRelaxedNonAtomic) override;
void StoreCompressedIntoObject(
Register object,
const Address& dest,
Register value,
CanBeSmi can_value_be_smi = kValueCanBeSmi,
MemoryOrder memory_order = kRelaxedNonAtomic) override;
void StoreBarrier(Register object, Register value, CanBeSmi can_value_be_smi);
void StoreIntoArray(Register object,
Register slot,
Register value,
CanBeSmi can_value_be_smi = kValueCanBeSmi);
void StoreCompressedIntoArray(Register object,
Register slot,
Register value,
CanBeSmi can_value_be_smi = kValueCanBeSmi);
void StoreIntoArrayBarrier(Register object,
Register slot,
Register value,
CanBeSmi can_value_be_smi);
void StoreIntoObjectOffset(Register object,
int32_t offset,
Register value,
CanBeSmi can_value_be_smi = kValueCanBeSmi,
MemoryOrder memory_order = kRelaxedNonAtomic);
void StoreCompressedIntoObjectOffset(
Register object,
int32_t offset,
Register value,
CanBeSmi can_value_be_smi = kValueCanBeSmi,
MemoryOrder memory_order = kRelaxedNonAtomic);
void StoreIntoObjectNoBarrier(
Register object,
const Address& dest,
Register value,
MemoryOrder memory_order = kRelaxedNonAtomic) override;
void StoreCompressedIntoObjectNoBarrier(
Register object,
const Address& dest,
Register value,
MemoryOrder memory_order = kRelaxedNonAtomic) override;
void StoreIntoObjectOffsetNoBarrier(
Register object,
int32_t offset,
Register value,
MemoryOrder memory_order = kRelaxedNonAtomic);
void StoreCompressedIntoObjectOffsetNoBarrier(
Register object,
int32_t offset,
Register value,
MemoryOrder memory_order = kRelaxedNonAtomic);
void StoreIntoObjectNoBarrier(Register object,
const Address& dest,
const Object& value);
void StoreCompressedIntoObjectNoBarrier(
Register object,
const Address& dest,
const Object& value,
MemoryOrder memory_order = kRelaxedNonAtomic);
void StoreIntoObjectOffsetNoBarrier(
Register object,
int32_t offset,
const Object& value,
MemoryOrder memory_order = kRelaxedNonAtomic);
void StoreCompressedIntoObjectOffsetNoBarrier(
Register object,
int32_t offset,
const Object& value,
MemoryOrder memory_order = kRelaxedNonAtomic);
// Stores a non-tagged value into a heap object.
void StoreInternalPointer(Register object,
const Address& dest,
Register value);
// Object pool, loading from pool, etc.
void LoadPoolPointer(Register pp = PP);
bool constant_pool_allowed() const { return constant_pool_allowed_; }
void set_constant_pool_allowed(bool b) { constant_pool_allowed_ = b; }
intptr_t FindImmediate(int64_t imm);
bool CanLoadFromObjectPool(const Object& object) const;
void LoadNativeEntry(Register dst,
const ExternalLabel* label,
ObjectPoolBuilderEntry::Patchability patchable);
void LoadIsolate(Register dst);
void LoadIsolateGroup(Register dst);
// Note: the function never clobbers TMP, TMP2 scratch registers.
void LoadObject(Register dst, const Object& obj) {
LoadObjectHelper(dst, obj, false);
}
// Note: the function never clobbers TMP, TMP2 scratch registers.
void LoadUniqueObject(Register dst, const Object& obj) {
LoadObjectHelper(dst, obj, true);
}
// Note: the function never clobbers TMP, TMP2 scratch registers.
void LoadImmediate(Register reg, intx_t imm);
void LoadDImmediate(FRegister reg, double immd);
// Load word from pool from the given offset using encoding that
// InstructionPattern::DecodeLoadWordFromPool can decode.
//
// Note: the function never clobbers TMP, TMP2 scratch registers.
void LoadWordFromPoolIndex(Register dst, intptr_t index, Register pp = PP);
void PushObject(const Object& object) {
if (IsSameObject(compiler::NullObject(), object)) {
PushRegister(NULL_REG);
} else if (target::IsSmi(object) && (target::ToRawSmi(object) == 0)) {
PushRegister(ZR);
} else {
LoadObject(TMP, object);
PushRegister(TMP);
}
}
void PushImmediate(int64_t immediate) {
if (immediate == 0) {
PushRegister(ZR);
} else {
LoadImmediate(TMP, immediate);
PushRegister(TMP);
}
}
void CompareObject(Register reg, const Object& object);
void ExtractClassIdFromTags(Register result, Register tags);
void ExtractInstanceSizeFromTags(Register result, Register tags);
void LoadClassId(Register result, Register object);
void LoadClassById(Register result, Register class_id);
void CompareClassId(Register object,
intptr_t class_id,
Register scratch = kNoRegister);
// Note: input and output registers must be different.
void LoadClassIdMayBeSmi(Register result, Register object);
void LoadTaggedClassIdMayBeSmi(Register result, Register object);
void EnsureHasClassIdInDEBUG(intptr_t cid,
Register src,
Register scratch,
bool can_be_null = false) override;
void EnterFrame(intptr_t frame_size);
void LeaveFrame();
void Ret() { ret(); }
// Emit code to transition between generated mode and native mode.
//
// These require and ensure that CSP and SP are equal and aligned and require
// a scratch register (in addition to TMP/TMP2).
void TransitionGeneratedToNative(Register destination_address,
Register new_exit_frame,
Register new_exit_through_ffi,
bool enter_safepoint);
void TransitionNativeToGenerated(Register scratch, bool exit_safepoint);
void EnterFullSafepoint(Register scratch);
void ExitFullSafepoint(Register scratch);
void CheckCodePointer();
void RestoreCodePointer();
// Restores the values of the registers that are blocked to cache some values
// e.g. BARRIER_MASK and NULL_REG.
void RestorePinnedRegisters();
void SetupGlobalPoolAndDispatchTable();
void EnterDartFrame(intptr_t frame_size, Register new_pp = kNoRegister);
void EnterOsrFrame(intptr_t extra_size, Register new_pp = kNoRegister);
void LeaveDartFrame(RestorePP restore_pp = kRestoreCallerPP);
void CallRuntime(const RuntimeEntry& entry, intptr_t argument_count);
// Helper method for performing runtime calls from callers requiring manual
// register preservation is required (e.g. outside IL instructions marked
// as calling).
class CallRuntimeScope : public ValueObject {
public:
CallRuntimeScope(Assembler* assembler,
const RuntimeEntry& entry,
intptr_t frame_size,
bool preserve_registers = true)
: CallRuntimeScope(assembler,
entry,
frame_size,
preserve_registers,
/*caller=*/nullptr) {}
CallRuntimeScope(Assembler* assembler,
const RuntimeEntry& entry,
intptr_t frame_size,
Address caller,
bool preserve_registers = true)
: CallRuntimeScope(assembler,
entry,
frame_size,
preserve_registers,
&caller) {}
void Call(intptr_t argument_count);
~CallRuntimeScope();
private:
CallRuntimeScope(Assembler* assembler,
const RuntimeEntry& entry,
intptr_t frame_size,
bool preserve_registers,
const Address* caller);
Assembler* const assembler_;
const RuntimeEntry& entry_;
const bool preserve_registers_;
const bool restore_code_reg_;
};
// Set up a stub frame so that the stack traversal code can easily identify
// a stub frame.
void EnterStubFrame() { EnterDartFrame(0); }
void LeaveStubFrame() { LeaveDartFrame(); }
// Set up a frame for calling a C function.
// Automatically save the pinned registers in Dart which are not callee-
// saved in the native calling convention.
// Use together with CallCFunction.
void EnterCFrame(intptr_t frame_space);
void LeaveCFrame();
void MonomorphicCheckedEntryJIT();
void MonomorphicCheckedEntryAOT();
void BranchOnMonomorphicCheckedEntryJIT(Label* label);
// If allocation tracing for |cid| is enabled, will jump to |trace| label,
// which will allocate in the runtime where tracing occurs.
void MaybeTraceAllocation(intptr_t cid, Register temp_reg, Label* trace);
void TryAllocateObject(intptr_t cid,
intptr_t instance_size,
Label* failure,
JumpDistance distance,
Register instance_reg,
Register temp_reg) override;
void TryAllocateArray(intptr_t cid,
intptr_t instance_size,
Label* failure,
Register instance,
Register end_address,
Register temp1,
Register temp2);
// This emits an PC-relative call of the form "bl <offset>". The offset
// is not yet known and needs therefore relocation to the right place before
// the code can be used.
//
// The neccessary information for the "linker" (i.e. the relocation
// information) is stored in [UntaggedCode::static_calls_target_table_]: an
// entry of the form
//
// (Code::kPcRelativeCall & pc_offset, <target-code>, <target-function>)
//
// will be used during relocation to fix the offset.
//
// The provided [offset_into_target] will be added to calculate the final
// destination. It can be used e.g. for calling into the middle of a
// function.
void GenerateUnRelocatedPcRelativeCall(intptr_t offset_into_target = 0);
// This emits an PC-relative tail call of the form "b <offset>".
//
// See also above for the pc-relative call.
void GenerateUnRelocatedPcRelativeTailCall(intptr_t offset_into_target = 0);
Address ElementAddressForIntIndex(bool is_external,
intptr_t cid,
intptr_t index_scale,
Register array,
intptr_t index) const;
void ComputeElementAddressForIntIndex(Register address,
bool is_external,
intptr_t cid,
intptr_t index_scale,
Register array,
intptr_t index);
Address ElementAddressForRegIndex(bool is_external,
intptr_t cid,
intptr_t index_scale,
bool index_unboxed,
Register array,
Register index,
Register temp);
// Special version of ElementAddressForRegIndex for the case when cid and
// operand size for the target load don't match (e.g. when loading a few
// elements of the array with one load).
Address ElementAddressForRegIndexWithSize(bool is_external,
intptr_t cid,
OperandSize size,
intptr_t index_scale,
bool index_unboxed,
Register array,
Register index,
Register temp);
void ComputeElementAddressForRegIndex(Register address,
bool is_external,
intptr_t cid,
intptr_t index_scale,
bool index_unboxed,
Register array,
Register index);
void LoadStaticFieldAddress(Register address,
Register field,
Register scratch);
void LoadCompressedFieldAddressForRegOffset(Register address,
Register instance,
Register offset_in_words_as_smi);
void LoadFieldAddressForRegOffset(Register address,
Register instance,
Register offset_in_words_as_smi);
// Returns object data offset for address calculation; for heap objects also
// accounts for the tag.
static int32_t HeapDataOffset(bool is_external, intptr_t cid) {
return is_external
? 0
: (target::Instance::DataOffsetFor(cid) - kHeapObjectTag);
}
void AddImmediateBranchOverflow(Register rd,
Register rs1,
intx_t imm,
Label* overflow);
void SubtractImmediateBranchOverflow(Register rd,
Register rs1,
intx_t imm,
Label* overflow);
void MultiplyImmediateBranchOverflow(Register rd,
Register rs1,
intx_t imm,
Label* overflow);
void AddBranchOverflow(Register rd,
Register rs1,
Register rs2,
Label* overflow);
void SubtractBranchOverflow(Register rd,
Register rs1,
Register rs2,
Label* overflow);
void MultiplyBranchOverflow(Register rd,
Register rs1,
Register rs2,
Label* overflow);
private:
bool constant_pool_allowed_;
enum DeferredCompareType {
kNone,
kCompareReg,
kCompareImm,
kTestReg,
kTestImm,
};
DeferredCompareType deferred_compare_ = kNone;
Register deferred_left_ = kNoRegister;
Register deferred_reg_ = kNoRegister;
intptr_t deferred_imm_ = 0;
// Note: the function never clobbers TMP, TMP2 scratch registers.
void LoadObjectHelper(Register dst, const Object& obj, bool is_unique);
enum BarrierFilterMode {
// Filter falls through into the barrier update code. Target label
// is a "after-store" label.
kJumpToNoUpdate,
// Filter falls through to the "after-store" code. Target label
// is barrier update code label.
kJumpToBarrier,
};
void StoreIntoObjectFilter(Register object,
Register value,
Label* label,
CanBeSmi can_be_smi,
BarrierFilterMode barrier_filter_mode);
// Note: leaf call sequence uses some abi callee save registers as scratch
// so they should be manually preserved.
void EnterCallRuntimeFrame(intptr_t frame_size, bool is_leaf);
void LeaveCallRuntimeFrame(bool is_leaf);
friend class dart::FlowGraphCompiler;
std::function<void(Register reg)> generate_invoke_write_barrier_wrapper_;
std::function<void()> generate_invoke_array_write_barrier_;
DISALLOW_ALLOCATION();
DISALLOW_COPY_AND_ASSIGN(Assembler);
};
} // namespace compiler
} // namespace dart
#endif // RUNTIME_VM_COMPILER_ASSEMBLER_ASSEMBLER_RISCV_H_