| # Copyright (C) 2011-2018 Apple Inc. All rights reserved. |
| # Copyright (C) 2013 University of Szeged. All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # 1. Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # 2. Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # |
| # THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| # THE POSSIBILITY OF SUCH DAMAGE. |
| |
| require "config" |
| require "ast" |
| require "opt" |
| require "risc" |
| |
| # GPR conventions, to match the baseline JIT |
| # |
| # x0 => t0, a0, r0 |
| # x1 => t1, a1, r1 |
| # x2 => t2, a2, r2 |
| # x3 => t3, a3, r3 |
| # x6 => (callee-save scratch) |
| # x7 => cfr |
| # x8 => t4 (callee-save) |
| # x9 => t5 (callee-save) |
| # x10 => csr1 (callee-save, PB) |
| # x11 => cfr, csr0 (callee-save, metadataTable) |
| # x12 => (callee-save scratch) |
| # lr => lr |
| # sp => sp |
| # pc => pc |
| # |
| # FPR conventions, to match the baseline JIT |
| # |
| # d0 => ft0, fa0, fr |
| # d1 => ft1, fa1 |
| # d2 => ft2 |
| # d3 => ft3 |
| # d4 => ft4 |
| # d5 => ft5 |
| # d6 => (scratch) |
| # d7 => (scratch) |
| |
| class Node |
| def armSingle |
| doubleOperand = armOperand |
| raise "Bogus register name #{doubleOperand}" unless doubleOperand =~ /^d/ |
| "s" + ($~.post_match.to_i * 2).to_s |
| end |
| end |
| |
| class SpecialRegister |
| def armOperand |
| @name |
| end |
| end |
| |
| ARM_EXTRA_GPRS = [SpecialRegister.new("r6"), SpecialRegister.new("r4"), SpecialRegister.new("r12")] |
| ARM_EXTRA_FPRS = [SpecialRegister.new("d7")] |
| ARM_SCRATCH_FPR = SpecialRegister.new("d6") |
| OS_DARWIN = ((RUBY_PLATFORM =~ /darwin/i) != nil) |
| |
| def armMoveImmediate(value, register) |
| # Currently we only handle the simple cases, and fall back to mov/movt for the complex ones. |
| if value.is_a? String |
| $asm.puts "mov #{register.armOperand}, (#{value})" |
| elsif value >= 0 && value < 256 |
| $asm.puts "mov #{register.armOperand}, \##{value}" |
| elsif (~value) >= 0 && (~value) < 256 |
| $asm.puts "mvn #{register.armOperand}, \##{~value}" |
| else |
| $asm.puts "movw #{register.armOperand}, \##{value & 0xffff}" |
| if (value & 0xffff0000) != 0 |
| $asm.puts "movt #{register.armOperand}, \##{(value >> 16) & 0xffff}" |
| end |
| end |
| end |
| |
| class RegisterID |
| def armOperand |
| case name |
| when "t0", "a0", "r0" |
| "r0" |
| when "t1", "a1", "r1" |
| "r1" |
| when "t2", "a2" |
| "r2" |
| when "a3" |
| "r3" |
| when "t3" |
| "r3" |
| when "t4" |
| "r8" |
| when "t5" |
| "r9" |
| when "cfr" |
| "r7" |
| when "csr0" |
| "r11" |
| when "csr1" |
| "r10" |
| when "lr" |
| "lr" |
| when "sp" |
| "sp" |
| when "pc" |
| "pc" |
| else |
| raise "Bad register #{name} for ARM at #{codeOriginString}" |
| end |
| end |
| end |
| |
| class FPRegisterID |
| def armOperand |
| case name |
| when "ft0", "fr", "fa0" |
| "d0" |
| when "ft1", "fa1" |
| "d1" |
| when "ft2" |
| "d2" |
| when "ft3" |
| "d3" |
| when "ft4" |
| "d4" |
| when "ft5" |
| "d5" |
| else |
| raise "Bad register #{name} for ARM at #{codeOriginString}" |
| end |
| end |
| end |
| |
| class Immediate |
| def armOperand |
| raise "Invalid immediate #{value} at #{codeOriginString}" if value < 0 or value > 255 |
| "\##{value}" |
| end |
| end |
| |
| class Address |
| def armOperand |
| raise "Bad offset at #{codeOriginString}" if offset.value < -0xff or offset.value > 0xfff |
| "[#{base.armOperand}, \##{offset.value}]" |
| end |
| end |
| |
| class BaseIndex |
| def armOperand |
| raise "Bad offset at #{codeOriginString}" if offset.value != 0 |
| "[#{base.armOperand}, #{index.armOperand}, lsl \##{scaleShift}]" |
| end |
| end |
| |
| class AbsoluteAddress |
| def armOperand |
| raise "Unconverted absolute address at #{codeOriginString}" |
| end |
| end |
| |
| # |
| # Lea support. |
| # |
| |
| class Address |
| def armEmitLea(destination) |
| if destination == base |
| $asm.puts "adds #{destination.armOperand}, \##{offset.value}" |
| else |
| $asm.puts "adds #{destination.armOperand}, #{base.armOperand}, \##{offset.value}" |
| end |
| end |
| end |
| |
| class BaseIndex |
| def armEmitLea(destination) |
| raise "Malformed BaseIndex, offset should be zero at #{codeOriginString}" unless offset.value == 0 |
| $asm.puts "add #{destination.armOperand}, #{base.armOperand}, #{index.armOperand}, lsl \##{scaleShift}" |
| end |
| end |
| |
| # FIXME: we could support AbsoluteAddress for lea, but we don't. |
| |
| # |
| # Actual lowering code follows. |
| # |
| |
| def armOpcodeReversedOperands(opcode) |
| m = /\Ab[ipb]/.match(opcode) |
| |
| operation = |
| case m.post_match |
| when "eq" then "eq" |
| when "neq" then "neq" |
| when "a" then "b" |
| when "aeq" then "beq" |
| when "b" then "a" |
| when "beq" then "aeq" |
| when "gt" then "lt" |
| when "gteq" then "lteq" |
| when "lt" then "gt" |
| when "lteq" then "gteq" |
| else |
| raise "unknown operation #{m.post_match}" |
| end |
| |
| "#{m[0]}#{operation}" |
| end |
| |
| def armLowerStackPointerInComparison(list) |
| newList = [] |
| list.each { |
| | node | |
| if node.is_a? Instruction |
| case node.opcode |
| when "bieq", "bpeq", "bbeq", |
| "bineq", "bpneq", "bbneq", |
| "bia", "bpa", "bba", |
| "biaeq", "bpaeq", "bbaeq", |
| "bib", "bpb", "bbb", |
| "bibeq", "bpbeq", "bbbeq", |
| "bigt", "bpgt", "bbgt", |
| "bigteq", "bpgteq", "bbgteq", |
| "bilt", "bplt", "bblt", |
| "bilteq", "bplteq", "bblteq" |
| if node.operands[1].is_a?(RegisterID) && node.operands[1].name == "sp" |
| newList << Instruction.new(codeOrigin, armOpcodeReversedOperands(node.opcode), [node.operands[1], node.operands[0]] + node.operands[2..-1]) |
| else |
| newList << node |
| end |
| else |
| newList << node |
| end |
| else |
| newList << node |
| end |
| } |
| newList |
| end |
| |
| def armLowerLabelReferences(list) |
| newList = [] |
| list.each { |
| | node | |
| if node.is_a? Instruction |
| case node.opcode |
| when "leai", "leap", "leaq" |
| labelRef = node.operands[0] |
| if labelRef.is_a? LabelReference |
| raise unless labelRef.offset == 0 |
| tmp = Tmp.new(node.codeOrigin, :gpr) |
| newList << Instruction.new(codeOrigin, "globaladdr", [LabelReference.new(node.codeOrigin, labelRef.label), node.operands[1], tmp]) |
| else |
| newList << node |
| end |
| else |
| newList << node |
| end |
| else |
| newList << node |
| end |
| } |
| newList |
| end |
| |
| class Sequence |
| def getModifiedListARMv7 |
| raise unless $activeBackend == "ARMv7" |
| getModifiedListARMCommon |
| end |
| |
| def getModifiedListARMCommon |
| result = @list |
| result = riscLowerSimpleBranchOps(result) |
| result = riscLowerHardBranchOps(result) |
| result = riscLowerShiftOps(result) |
| result = armLowerLabelReferences(result) |
| result = riscLowerMalformedAddresses(result) { |
| | node, address | |
| if address.is_a? BaseIndex |
| address.offset.value == 0 |
| elsif address.is_a? Address |
| (-0xff..0xfff).include? address.offset.value |
| else |
| false |
| end |
| } |
| result = riscLowerMalformedAddressesDouble(result) |
| result = riscLowerMisplacedImmediates(result, ["storeb", "storeh", "storei", "storep", "storeq"]) |
| result = riscLowerMalformedImmediates(result, 0..0xff, 0..0x0ff) |
| result = riscLowerMisplacedAddresses(result) |
| result = riscLowerRegisterReuse(result) |
| result = assignRegistersToTemporaries(result, :gpr, ARM_EXTRA_GPRS) |
| result = assignRegistersToTemporaries(result, :fpr, ARM_EXTRA_FPRS) |
| result = armLowerStackPointerInComparison(result) |
| return result |
| end |
| end |
| |
| def armOperands(operands) |
| operands.map{|v| v.armOperand}.join(", ") |
| end |
| |
| def armFlippedOperands(operands) |
| armOperands([operands[-1]] + operands[0..-2]) |
| end |
| |
| def emitArmCompact(opcode2, opcode3, operands) |
| if operands.size == 3 |
| $asm.puts "#{opcode3} #{armFlippedOperands(operands)}" |
| else |
| raise unless operands.size == 2 |
| raise unless operands[1].register? |
| if operands[0].immediate? |
| $asm.puts "#{opcode3} #{operands[1].armOperand}, #{operands[1].armOperand}, #{operands[0].armOperand}" |
| else |
| $asm.puts "#{opcode2} #{armFlippedOperands(operands)}" |
| end |
| end |
| end |
| |
| def emitArm(opcode, operands) |
| if operands.size == 3 |
| $asm.puts "#{opcode} #{armFlippedOperands(operands)}" |
| else |
| raise unless operands.size == 2 |
| $asm.puts "#{opcode} #{operands[1].armOperand}, #{operands[1].armOperand}, #{operands[0].armOperand}" |
| end |
| end |
| |
| def emitArmDoubleBranch(branchOpcode, operands) |
| $asm.puts "vcmpe.f64 #{armOperands(operands[0..1])}" |
| $asm.puts "vmrs apsr_nzcv, fpscr" |
| $asm.puts "#{branchOpcode} #{operands[2].asmLabel}" |
| end |
| |
| def emitArmTest(operands) |
| value = operands[0] |
| case operands.size |
| when 2 |
| mask = Immediate.new(codeOrigin, -1) |
| when 3 |
| mask = operands[1] |
| else |
| raise "Expected 2 or 3 operands but got #{operands.size} at #{codeOriginString}" |
| end |
| |
| if mask.immediate? and mask.value == -1 |
| $asm.puts "tst #{value.armOperand}, #{value.armOperand}" |
| else |
| $asm.puts "tst #{value.armOperand}, #{mask.armOperand}" |
| end |
| end |
| |
| def emitArmCompare(operands, code) |
| $asm.puts "movs #{operands[2].armOperand}, \#0" |
| $asm.puts "cmp #{operands[0].armOperand}, #{operands[1].armOperand}" |
| $asm.puts "it #{code}" |
| $asm.puts "mov#{code} #{operands[2].armOperand}, \#1" |
| end |
| |
| def emitArmTestSet(operands, code) |
| $asm.puts "movs #{operands[-1].armOperand}, \#0" |
| emitArmTest(operands) |
| $asm.puts "it #{code}" |
| $asm.puts "mov#{code} #{operands[-1].armOperand}, \#1" |
| end |
| |
| class Instruction |
| def lowerARMv7 |
| raise unless $activeBackend == "ARMv7" |
| lowerARMCommon |
| end |
| |
| def lowerARMCommon |
| case opcode |
| when "addi", "addp", "addis", "addps" |
| if opcode == "addis" or opcode == "addps" |
| suffix = "s" |
| else |
| suffix = "" |
| end |
| if operands.size == 3 and operands[0].immediate? |
| raise unless operands[1].register? |
| raise unless operands[2].register? |
| if operands[0].value == 0 and suffix.empty? |
| unless operands[1] == operands[2] |
| $asm.puts "mov #{operands[2].armOperand}, #{operands[1].armOperand}" |
| end |
| else |
| $asm.puts "adds #{operands[2].armOperand}, #{operands[1].armOperand}, #{operands[0].armOperand}" |
| end |
| elsif operands.size == 3 and operands[0].register? |
| raise unless operands[1].register? |
| raise unless operands[2].register? |
| $asm.puts "adds #{armFlippedOperands(operands)}" |
| else |
| if operands[0].immediate? |
| unless Immediate.new(nil, 0) == operands[0] |
| $asm.puts "adds #{armFlippedOperands(operands)}" |
| end |
| else |
| $asm.puts "add#{suffix} #{armFlippedOperands(operands)}" |
| end |
| end |
| when "andi", "andp" |
| emitArmCompact("ands", "and", operands) |
| when "ori", "orp", "orh" |
| emitArmCompact("orrs", "orr", operands) |
| when "oris" |
| emitArmCompact("orrs", "orrs", operands) |
| when "xori", "xorp" |
| emitArmCompact("eors", "eor", operands) |
| when "lshifti", "lshiftp" |
| emitArmCompact("lsls", "lsls", operands) |
| when "rshifti", "rshiftp" |
| emitArmCompact("asrs", "asrs", operands) |
| when "urshifti", "urshiftp" |
| emitArmCompact("lsrs", "lsrs", operands) |
| when "muli", "mulp" |
| emitArm("mul", operands) |
| when "subi", "subp", "subis" |
| emitArmCompact("subs", "subs", operands) |
| when "negi", "negp" |
| $asm.puts "rsbs #{operands[0].armOperand}, #{operands[0].armOperand}, \#0" |
| when "noti" |
| $asm.puts "mvns #{operands[0].armOperand}, #{operands[0].armOperand}" |
| when "loadi", "loadis", "loadp" |
| $asm.puts "ldr #{armFlippedOperands(operands)}" |
| when "storei", "storep" |
| $asm.puts "str #{armOperands(operands)}" |
| when "loadb" |
| $asm.puts "ldrb #{armFlippedOperands(operands)}" |
| when "loadbsi" |
| $asm.puts "ldrsb.w #{armFlippedOperands(operands)}" |
| when "storeb" |
| $asm.puts "strb #{armOperands(operands)}" |
| when "loadh" |
| $asm.puts "ldrh #{armFlippedOperands(operands)}" |
| when "loadhsi" |
| $asm.puts "ldrsh.w #{armFlippedOperands(operands)}" |
| when "storeh" |
| $asm.puts "strh #{armOperands(operands)}" |
| when "loadd" |
| $asm.puts "vldr.64 #{armFlippedOperands(operands)}" |
| when "stored" |
| $asm.puts "vstr.64 #{armOperands(operands)}" |
| when "addd" |
| emitArm("vadd.f64", operands) |
| when "divd" |
| emitArm("vdiv.f64", operands) |
| when "subd" |
| emitArm("vsub.f64", operands) |
| when "muld" |
| emitArm("vmul.f64", operands) |
| when "sqrtd" |
| $asm.puts "vsqrt.f64 #{armFlippedOperands(operands)}" |
| when "ci2ds" |
| $asm.puts "vmov #{operands[1].armSingle}, #{operands[0].armOperand}" |
| $asm.puts "vcvt.f64.s32 #{operands[1].armOperand}, #{operands[1].armSingle}" |
| when "bdeq" |
| emitArmDoubleBranch("beq", operands) |
| when "bdneq" |
| $asm.puts "vcmpe.f64 #{armOperands(operands[0..1])}" |
| $asm.puts "vmrs apsr_nzcv, fpscr" |
| isUnordered = LocalLabel.unique("bdneq") |
| $asm.puts "bvs #{LocalLabelReference.new(codeOrigin, isUnordered).asmLabel}" |
| $asm.puts "bne #{operands[2].asmLabel}" |
| isUnordered.lower("ARM") |
| when "bdgt" |
| emitArmDoubleBranch("bgt", operands) |
| when "bdgteq" |
| emitArmDoubleBranch("bge", operands) |
| when "bdlt" |
| emitArmDoubleBranch("bmi", operands) |
| when "bdlteq" |
| emitArmDoubleBranch("bls", operands) |
| when "bdequn" |
| $asm.puts "vcmpe.f64 #{armOperands(operands[0..1])}" |
| $asm.puts "vmrs apsr_nzcv, fpscr" |
| $asm.puts "bvs #{operands[2].asmLabel}" |
| $asm.puts "beq #{operands[2].asmLabel}" |
| when "bdnequn" |
| emitArmDoubleBranch("bne", operands) |
| when "bdgtun" |
| emitArmDoubleBranch("bhi", operands) |
| when "bdgtequn" |
| emitArmDoubleBranch("bpl", operands) |
| when "bdltun" |
| emitArmDoubleBranch("blt", operands) |
| when "bdltequn" |
| emitArmDoubleBranch("ble", operands) |
| when "btd2i" |
| # FIXME: may be a good idea to just get rid of this instruction, since the interpreter |
| # currently does not use it. |
| raise "ARM does not support this opcode yet, #{codeOrigin}" |
| when "td2i" |
| $asm.puts "vcvt.s32.f64 #{ARM_SCRATCH_FPR.armSingle}, #{operands[0].armOperand}" |
| $asm.puts "vmov #{operands[1].armOperand}, #{ARM_SCRATCH_FPR.armSingle}" |
| when "bcd2i" |
| $asm.puts "vcvt.s32.f64 #{ARM_SCRATCH_FPR.armSingle}, #{operands[0].armOperand}" |
| $asm.puts "vmov #{operands[1].armOperand}, #{ARM_SCRATCH_FPR.armSingle}" |
| $asm.puts "vcvt.f64.s32 #{ARM_SCRATCH_FPR.armOperand}, #{ARM_SCRATCH_FPR.armSingle}" |
| emitArmDoubleBranch("bne", [ARM_SCRATCH_FPR, operands[0], operands[2]]) |
| $asm.puts "tst #{operands[1].armOperand}, #{operands[1].armOperand}" |
| $asm.puts "beq #{operands[2].asmLabel}" |
| when "movdz" |
| # FIXME: either support this or remove it. |
| raise "ARM does not support this opcode yet, #{codeOrigin}" |
| when "pop" |
| operands.each { |
| | op | |
| $asm.puts "pop { #{op.armOperand} }" |
| } |
| when "push" |
| operands.each { |
| | op | |
| $asm.puts "push { #{op.armOperand} }" |
| } |
| when "move" |
| if operands[0].immediate? |
| armMoveImmediate(operands[0].value, operands[1]) |
| else |
| $asm.puts "mov #{armFlippedOperands(operands)}" |
| end |
| when "mvlbl" |
| $asm.puts "movw #{operands[1].armOperand}, \#:lower16:#{operands[0].value}" |
| $asm.puts "movt #{operands[1].armOperand}, \#:upper16:#{operands[0].value}" |
| when "nop" |
| $asm.puts "nop" |
| when "bieq", "bpeq", "bbeq" |
| if Immediate.new(nil, 0) == operands[0] |
| $asm.puts "tst #{operands[1].armOperand}, #{operands[1].armOperand}" |
| elsif Immediate.new(nil, 0) == operands[1] |
| $asm.puts "tst #{operands[0].armOperand}, #{operands[0].armOperand}" |
| else |
| $asm.puts "cmp #{armOperands(operands[0..1])}" |
| end |
| $asm.puts "beq #{operands[2].asmLabel}" |
| when "bineq", "bpneq", "bbneq" |
| if Immediate.new(nil, 0) == operands[0] |
| $asm.puts "tst #{operands[1].armOperand}, #{operands[1].armOperand}" |
| elsif Immediate.new(nil, 0) == operands[1] |
| $asm.puts "tst #{operands[0].armOperand}, #{operands[0].armOperand}" |
| else |
| $asm.puts "cmp #{armOperands(operands[0..1])}" |
| end |
| $asm.puts "bne #{operands[2].asmLabel}" |
| when "bia", "bpa", "bba" |
| $asm.puts "cmp #{armOperands(operands[0..1])}" |
| $asm.puts "bhi #{operands[2].asmLabel}" |
| when "biaeq", "bpaeq", "bbaeq" |
| $asm.puts "cmp #{armOperands(operands[0..1])}" |
| $asm.puts "bhs #{operands[2].asmLabel}" |
| when "bib", "bpb", "bbb" |
| $asm.puts "cmp #{armOperands(operands[0..1])}" |
| $asm.puts "blo #{operands[2].asmLabel}" |
| when "bibeq", "bpbeq", "bbbeq" |
| $asm.puts "cmp #{armOperands(operands[0..1])}" |
| $asm.puts "bls #{operands[2].asmLabel}" |
| when "bigt", "bpgt", "bbgt" |
| $asm.puts "cmp #{armOperands(operands[0..1])}" |
| $asm.puts "bgt #{operands[2].asmLabel}" |
| when "bigteq", "bpgteq", "bbgteq" |
| $asm.puts "cmp #{armOperands(operands[0..1])}" |
| $asm.puts "bge #{operands[2].asmLabel}" |
| when "bilt", "bplt", "bblt" |
| $asm.puts "cmp #{armOperands(operands[0..1])}" |
| $asm.puts "blt #{operands[2].asmLabel}" |
| when "bilteq", "bplteq", "bblteq" |
| $asm.puts "cmp #{armOperands(operands[0..1])}" |
| $asm.puts "ble #{operands[2].asmLabel}" |
| when "btiz", "btpz", "btbz" |
| emitArmTest(operands) |
| $asm.puts "beq #{operands[-1].asmLabel}" |
| when "btinz", "btpnz", "btbnz" |
| emitArmTest(operands) |
| $asm.puts "bne #{operands[-1].asmLabel}" |
| when "btis", "btps", "btbs" |
| emitArmTest(operands) |
| $asm.puts "bmi #{operands[-1].asmLabel}" |
| when "jmp" |
| if operands[0].label? |
| $asm.puts "b #{operands[0].asmLabel}" |
| else |
| $asm.puts "mov pc, #{operands[0].armOperand}" |
| end |
| when "call" |
| if operands[0].label? |
| if OS_DARWIN |
| $asm.puts "blx #{operands[0].asmLabel}" |
| else |
| $asm.puts "bl #{operands[0].asmLabel}" |
| end |
| else |
| $asm.puts "blx #{operands[0].armOperand}" |
| end |
| when "break" |
| $asm.puts "bkpt #0" |
| when "ret" |
| $asm.puts "bx lr" |
| when "cieq", "cpeq", "cbeq" |
| emitArmCompare(operands, "eq") |
| when "cineq", "cpneq", "cbneq" |
| emitArmCompare(operands, "ne") |
| when "cia", "cpa", "cba" |
| emitArmCompare(operands, "hi") |
| when "ciaeq", "cpaeq", "cbaeq" |
| emitArmCompare(operands, "hs") |
| when "cib", "cpb", "cbb" |
| emitArmCompare(operands, "lo") |
| when "cibeq", "cpbeq", "cbbeq" |
| emitArmCompare(operands, "ls") |
| when "cigt", "cpgt", "cbgt" |
| emitArmCompare(operands, "gt") |
| when "cigteq", "cpgteq", "cbgteq" |
| emitArmCompare(operands, "ge") |
| when "cilt", "cplt", "cblt" |
| emitArmCompare(operands, "lt") |
| when "cilteq", "cplteq", "cblteq" |
| emitArmCompare(operands, "le") |
| when "tis", "tbs", "tps" |
| emitArmTestSet(operands, "mi") |
| when "tiz", "tbz", "tpz" |
| emitArmTestSet(operands, "eq") |
| when "tinz", "tbnz", "tpnz" |
| emitArmTestSet(operands, "ne") |
| when "peek" |
| $asm.puts "ldr #{operands[1].armOperand}, [sp, \##{operands[0].value * 4}]" |
| when "poke" |
| $asm.puts "str #{operands[1].armOperand}, [sp, \##{operands[0].value * 4}]" |
| when "fii2d" |
| $asm.puts "vmov #{operands[2].armOperand}, #{operands[0].armOperand}, #{operands[1].armOperand}" |
| when "fd2ii" |
| $asm.puts "vmov #{operands[1].armOperand}, #{operands[2].armOperand}, #{operands[0].armOperand}" |
| when "bo" |
| $asm.puts "bvs #{operands[0].asmLabel}" |
| when "bs" |
| $asm.puts "bmi #{operands[0].asmLabel}" |
| when "bz" |
| $asm.puts "beq #{operands[0].asmLabel}" |
| when "bnz" |
| $asm.puts "bne #{operands[0].asmLabel}" |
| when "leai", "leap" |
| operands[0].armEmitLea(operands[1]) |
| when "smulli" |
| raise "Wrong number of arguments to smull in #{self.inspect} at #{codeOriginString}" unless operands.length == 4 |
| $asm.puts "smull #{operands[2].armOperand}, #{operands[3].armOperand}, #{operands[0].armOperand}, #{operands[1].armOperand}" |
| when "memfence" |
| $asm.puts "dmb sy" |
| when "clrbp" |
| $asm.puts "bic #{operands[2].armOperand}, #{operands[0].armOperand}, #{operands[1].armOperand}" |
| when "globaladdr" |
| labelRef = operands[0] |
| dest = operands[1] |
| temp = operands[2] |
| |
| uid = $asm.newUID |
| gotLabel = Assembler.localLabelReference("offlineasm_arm_got_#{uid}") |
| offsetLabel = Assembler.localLabelReference("offlineasm_arm_got_offset_#{uid}") |
| |
| $asm.puts "ldr #{dest.armOperand}, #{gotLabel}" |
| $asm.puts "ldr #{temp.armOperand}, #{gotLabel}+4" |
| $asm.puts "#{offsetLabel}:" |
| $asm.puts "add #{dest.armOperand}, pc, #{dest.armOperand}" |
| $asm.puts "ldr #{dest.armOperand}, [#{dest.armOperand}, #{temp.armOperand}]" |
| |
| offset = 4 |
| |
| $asm.deferNextLabelAction { |
| $asm.puts "#{gotLabel}:" |
| $asm.puts ".word _GLOBAL_OFFSET_TABLE_-(#{offsetLabel}+#{offset})" |
| $asm.puts ".word #{labelRef.asmLabel}(GOT)" |
| } |
| else |
| lowerDefault |
| end |
| end |
| end |
| |
