assembler/MacroAssemblerX86.h

   1 /*
   2  * Copyright (C) 2008 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef MacroAssemblerX86_h
  27 #define MacroAssemblerX86_h
  28
  29 #if ENABLE(ASSEMBLER) && CPU(X86)
  30
  31 #include "MacroAssemblerX86Common.h"
  32
  33 namespace JSC {
  34
  35 class MacroAssemblerX86 : public MacroAssemblerX86Common {
  36 public:
  37     static const Scale ScalePtr = TimesFour;
  38
  39     using MacroAssemblerX86Common::add32;
  40     using MacroAssemblerX86Common::and32;
  41     using MacroAssemblerX86Common::branchAdd32;
  42     using MacroAssemblerX86Common::branchSub32;
  43     using MacroAssemblerX86Common::sub32;
  44     using MacroAssemblerX86Common::or32;
  45     using MacroAssemblerX86Common::load32;
  46     using MacroAssemblerX86Common::store32;
  47     using MacroAssemblerX86Common::branch32;
  48     using MacroAssemblerX86Common::call;
  49     using MacroAssemblerX86Common::jump;
  50     using MacroAssemblerX86Common::addDouble;
  51     using MacroAssemblerX86Common::loadDouble;
  52     using MacroAssemblerX86Common::storeDouble;
  53     using MacroAssemblerX86Common::convertInt32ToDouble;
  54
  55     void add32(TrustedImm32 imm, RegisterID src, RegisterID dest)
  56     {
  57         m_assembler.leal_mr(imm.m_value, src, dest);
  58     }
  59
  60     void add32(TrustedImm32 imm, AbsoluteAddress address)
  61     {
  62         m_assembler.addl_im(imm.m_value, address.m_ptr);
  63     }
  64
  65     void add64(TrustedImm32 imm, AbsoluteAddress address)
  66     {
  67         m_assembler.addl_im(imm.m_value, address.m_ptr);
  68         m_assembler.adcl_im(imm.m_value >> 31, reinterpret_cast<const char*>(address.m_ptr) + sizeof(int32_t));
  69     }
  70
  71     void and32(TrustedImm32 imm, AbsoluteAddress address)
  72     {
  73         m_assembler.andl_im(imm.m_value, address.m_ptr);
  74     }
  75
  76     void or32(TrustedImm32 imm, AbsoluteAddress address)
  77     {
  78         m_assembler.orl_im(imm.m_value, address.m_ptr);
  79     }
  80
  81     void sub32(TrustedImm32 imm, AbsoluteAddress address)
  82     {
  83         m_assembler.subl_im(imm.m_value, address.m_ptr);
  84     }
  85
  86     void load32(const void* address, RegisterID dest)
  87     {
  88         m_assembler.movl_mr(address, dest);
  89     }
  90
  91     void addDouble(AbsoluteAddress address, FPRegisterID dest)
  92     {
  93         m_assembler.addsd_mr(address.m_ptr, dest);
  94     }
  95
  96     void storeDouble(FPRegisterID src, const void* address)
  97     {
  98         ASSERT(isSSE2Present());
  99         m_assembler.movsd_rm(src, address);
 100     }
 101
 102     void convertInt32ToDouble(AbsoluteAddress src, FPRegisterID dest)
 103     {
 104         m_assembler.cvtsi2sd_mr(src.m_ptr, dest);
 105     }
 106
 107     void store32(TrustedImm32 imm, void* address)
 108     {
 109         m_assembler.movl_i32m(imm.m_value, address);
 110     }
 111
 112     void store32(RegisterID src, void* address)
 113     {
 114         m_assembler.movl_rm(src, address);
 115     }
 116
 117     Jump branchAdd32(ResultCondition cond, TrustedImm32 imm, AbsoluteAddress dest)
 118     {
 119         m_assembler.addl_im(imm.m_value, dest.m_ptr);
 120         return Jump(m_assembler.jCC(x86Condition(cond)));
 121     }
 122
 123     Jump branchSub32(ResultCondition cond, TrustedImm32 imm, AbsoluteAddress dest)
 124     {
 125         m_assembler.subl_im(imm.m_value, dest.m_ptr);
 126         return Jump(m_assembler.jCC(x86Condition(cond)));
 127     }
 128
 129     Jump branch32(RelationalCondition cond, AbsoluteAddress left, RegisterID right)
 130     {
 131         m_assembler.cmpl_rm(right, left.m_ptr);
 132         return Jump(m_assembler.jCC(x86Condition(cond)));
 133     }
 134
 135     Jump branch32(RelationalCondition cond, AbsoluteAddress left, TrustedImm32 right)
 136     {
 137         m_assembler.cmpl_im(right.m_value, left.m_ptr);
 138         return Jump(m_assembler.jCC(x86Condition(cond)));
 139     }
 140
 141     Call call()
 142     {
 143         return Call(m_assembler.call(), Call::Linkable);
 144     }
 145
 146     // Address is a memory location containing the address to jump to
 147     void jump(AbsoluteAddress address)
 148     {
 149         m_assembler.jmp_m(address.m_ptr);
 150     }
 151
 152     Call tailRecursiveCall()
 153     {
 154         return Call::fromTailJump(jump());
 155     }
 156
 157     Call makeTailRecursiveCall(Jump oldJump)
 158     {
 159         return Call::fromTailJump(oldJump);
 160     }
 161
 162
 163     DataLabelPtr moveWithPatch(TrustedImmPtr initialValue, RegisterID dest)
 164     {
 165         m_assembler.movl_i32r(initialValue.asIntptr(), dest);
 166         return DataLabelPtr(this);
 167     }
 168
 169     Jump branchPtrWithPatch(RelationalCondition cond, RegisterID left, DataLabelPtr& dataLabel, TrustedImmPtr initialRightValue = TrustedImmPtr(0))
 170     {
 171         m_assembler.cmpl_ir_force32(initialRightValue.asIntptr(), left);
 172         dataLabel = DataLabelPtr(this);
 173         return Jump(m_assembler.jCC(x86Condition(cond)));
 174     }
 175
 176     Jump branchPtrWithPatch(RelationalCondition cond, Address left, DataLabelPtr& dataLabel, TrustedImmPtr initialRightValue = TrustedImmPtr(0))
 177     {
 178         m_assembler.cmpl_im_force32(initialRightValue.asIntptr(), left.offset, left.base);
 179         dataLabel = DataLabelPtr(this);
 180         return Jump(m_assembler.jCC(x86Condition(cond)));
 181     }
 182
 183     DataLabelPtr storePtrWithPatch(TrustedImmPtr initialValue, ImplicitAddress address)
 184     {
 185         m_assembler.movl_i32m(initialValue.asIntptr(), address.offset, address.base);
 186         return DataLabelPtr(this);
 187     }
 188
 189     static bool supportsFloatingPoint() { return isSSE2Present(); }
 190     // See comment on MacroAssemblerARMv7::supportsFloatingPointTruncate()
 191     static bool supportsFloatingPointTruncate() { return isSSE2Present(); }
 192     static bool supportsFloatingPointSqrt() { return isSSE2Present(); }
 193     static bool supportsFloatingPointAbs() { return isSSE2Present(); }
 194
 195     static FunctionPtr readCallTarget(CodeLocationCall call)
 196     {
 197         intptr_t offset = reinterpret_cast<int32_t*>(call.dataLocation())[-1];
 198         return FunctionPtr(reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(call.dataLocation()) + offset));
 199     }
 200
 201 private:
 202     friend class LinkBuffer;
 203     friend class RepatchBuffer;
 204
 205     static void linkCall(void* code, Call call, FunctionPtr function)
 206     {
 207         X86Assembler::linkCall(code, call.m_label, function.value());
 208     }
 209
 210     static void repatchCall(CodeLocationCall call, CodeLocationLabel destination)
 211     {
 212         X86Assembler::relinkCall(call.dataLocation(), destination.executableAddress());
 213     }
 214
 215     static void repatchCall(CodeLocationCall call, FunctionPtr destination)
 216     {
 217         X86Assembler::relinkCall(call.dataLocation(), destination.executableAddress());
 218     }
 219 };
 220
 221 } // namespace JSC
 222
 223 #endif // ENABLE(ASSEMBLER)
 224
 225 #endif // MacroAssemblerX86_h