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diff --git a/src/3rdparty/masm/assembler/ARMAssembler.cpp b/src/3rdparty/masm/assembler/ARMAssembler.cpp
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-/*
- * Copyright (C) 2009 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 UNIVERSITY OF SZEGED ``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 UNIVERSITY OF SZEGED OR
- * 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.
- */
-
-#include "config.h"
-
-#if ENABLE(ASSEMBLER) && CPU(ARM_TRADITIONAL)
-
-#include "ARMAssembler.h"
-
-namespace JSC {
-
-// Patching helpers
-
-void ARMAssembler::patchConstantPoolLoad(void* loadAddr, void* constPoolAddr)
-{
- ARMWord *ldr = reinterpret_cast<ARMWord*>(loadAddr);
- ARMWord diff = reinterpret_cast<ARMWord*>(constPoolAddr) - ldr;
- ARMWord index = (*ldr & 0xfff) >> 1;
-
- ASSERT(diff >= 1);
- if (diff >= 2 || index > 0) {
- diff = (diff + index - 2) * sizeof(ARMWord);
- ASSERT(diff <= 0xfff);
- *ldr = (*ldr & ~0xfff) | diff;
- } else
- *ldr = (*ldr & ~(0xfff | ARMAssembler::DataTransferUp)) | sizeof(ARMWord);
-}
-
-// Handle immediates
-
-ARMWord ARMAssembler::getOp2(ARMWord imm)
-{
- int rol;
-
- if (imm <= 0xff)
- return Op2Immediate | imm;
-
- if ((imm & 0xff000000) == 0) {
- imm <<= 8;
- rol = 8;
- }
- else {
- imm = (imm << 24) | (imm >> 8);
- rol = 0;
- }
-
- if ((imm & 0xff000000) == 0) {
- imm <<= 8;
- rol += 4;
- }
-
- if ((imm & 0xf0000000) == 0) {
- imm <<= 4;
- rol += 2;
- }
-
- if ((imm & 0xc0000000) == 0) {
- imm <<= 2;
- rol += 1;
- }
-
- if ((imm & 0x00ffffff) == 0)
- return Op2Immediate | (imm >> 24) | (rol << 8);
-
- return InvalidImmediate;
-}
-
-int ARMAssembler::genInt(int reg, ARMWord imm, bool positive)
-{
- // Step1: Search a non-immediate part
- ARMWord mask;
- ARMWord imm1;
- ARMWord imm2;
- int rol;
-
- mask = 0xff000000;
- rol = 8;
- while(1) {
- if ((imm & mask) == 0) {
- imm = (imm << rol) | (imm >> (32 - rol));
- rol = 4 + (rol >> 1);
- break;
- }
- rol += 2;
- mask >>= 2;
- if (mask & 0x3) {
- // rol 8
- imm = (imm << 8) | (imm >> 24);
- mask = 0xff00;
- rol = 24;
- while (1) {
- if ((imm & mask) == 0) {
- imm = (imm << rol) | (imm >> (32 - rol));
- rol = (rol >> 1) - 8;
- break;
- }
- rol += 2;
- mask >>= 2;
- if (mask & 0x3)
- return 0;
- }
- break;
- }
- }
-
- ASSERT((imm & 0xff) == 0);
-
- if ((imm & 0xff000000) == 0) {
- imm1 = Op2Immediate | ((imm >> 16) & 0xff) | (((rol + 4) & 0xf) << 8);
- imm2 = Op2Immediate | ((imm >> 8) & 0xff) | (((rol + 8) & 0xf) << 8);
- } else if (imm & 0xc0000000) {
- imm1 = Op2Immediate | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
- imm <<= 8;
- rol += 4;
-
- if ((imm & 0xff000000) == 0) {
- imm <<= 8;
- rol += 4;
- }
-
- if ((imm & 0xf0000000) == 0) {
- imm <<= 4;
- rol += 2;
- }
-
- if ((imm & 0xc0000000) == 0) {
- imm <<= 2;
- rol += 1;
- }
-
- if ((imm & 0x00ffffff) == 0)
- imm2 = Op2Immediate | (imm >> 24) | ((rol & 0xf) << 8);
- else
- return 0;
- } else {
- if ((imm & 0xf0000000) == 0) {
- imm <<= 4;
- rol += 2;
- }
-
- if ((imm & 0xc0000000) == 0) {
- imm <<= 2;
- rol += 1;
- }
-
- imm1 = Op2Immediate | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
- imm <<= 8;
- rol += 4;
-
- if ((imm & 0xf0000000) == 0) {
- imm <<= 4;
- rol += 2;
- }
-
- if ((imm & 0xc0000000) == 0) {
- imm <<= 2;
- rol += 1;
- }
-
- if ((imm & 0x00ffffff) == 0)
- imm2 = Op2Immediate | (imm >> 24) | ((rol & 0xf) << 8);
- else
- return 0;
- }
-
- if (positive) {
- mov(reg, imm1);
- orr(reg, reg, imm2);
- } else {
- mvn(reg, imm1);
- bic(reg, reg, imm2);
- }
-
- return 1;
-}
-
-ARMWord ARMAssembler::getImm(ARMWord imm, int tmpReg, bool invert)
-{
- ARMWord tmp;
-
- // Do it by 1 instruction
- tmp = getOp2(imm);
- if (tmp != InvalidImmediate)
- return tmp;
-
- tmp = getOp2(~imm);
- if (tmp != InvalidImmediate) {
- if (invert)
- return tmp | Op2InvertedImmediate;
- mvn(tmpReg, tmp);
- return tmpReg;
- }
-
- return encodeComplexImm(imm, tmpReg);
-}
-
-void ARMAssembler::moveImm(ARMWord imm, int dest)
-{
- ARMWord tmp;
-
- // Do it by 1 instruction
- tmp = getOp2(imm);
- if (tmp != InvalidImmediate) {
- mov(dest, tmp);
- return;
- }
-
- tmp = getOp2(~imm);
- if (tmp != InvalidImmediate) {
- mvn(dest, tmp);
- return;
- }
-
- encodeComplexImm(imm, dest);
-}
-
-ARMWord ARMAssembler::encodeComplexImm(ARMWord imm, int dest)
-{
-#if WTF_ARM_ARCH_AT_LEAST(7)
- ARMWord tmp = getImm16Op2(imm);
- if (tmp != InvalidImmediate) {
- movw(dest, tmp);
- return dest;
- }
- movw(dest, getImm16Op2(imm & 0xffff));
- movt(dest, getImm16Op2(imm >> 16));
- return dest;
-#else
- // Do it by 2 instruction
- if (genInt(dest, imm, true))
- return dest;
- if (genInt(dest, ~imm, false))
- return dest;
-
- ldrImmediate(dest, imm);
- return dest;
-#endif
-}
-
-// Memory load/store helpers
-
-void ARMAssembler::dataTransfer32(DataTransferTypeA transferType, RegisterID srcDst, RegisterID base, int32_t offset)
-{
- if (offset >= 0) {
- if (offset <= 0xfff)
- dtrUp(transferType, srcDst, base, offset);
- else if (offset <= 0xfffff) {
- add(ARMRegisters::S0, base, Op2Immediate | (offset >> 12) | (10 << 8));
- dtrUp(transferType, srcDst, ARMRegisters::S0, (offset & 0xfff));
- } else {
- moveImm(offset, ARMRegisters::S0);
- dtrUpRegister(transferType, srcDst, base, ARMRegisters::S0);
- }
- } else {
- if (offset >= -0xfff)
- dtrDown(transferType, srcDst, base, -offset);
- else if (offset >= -0xfffff) {
- sub(ARMRegisters::S0, base, Op2Immediate | (-offset >> 12) | (10 << 8));
- dtrDown(transferType, srcDst, ARMRegisters::S0, (-offset & 0xfff));
- } else {
- moveImm(offset, ARMRegisters::S0);
- dtrUpRegister(transferType, srcDst, base, ARMRegisters::S0);
- }
- }
-}
-
-void ARMAssembler::baseIndexTransfer32(DataTransferTypeA transferType, RegisterID srcDst, RegisterID base, RegisterID index, int scale, int32_t offset)
-{
- ASSERT(scale >= 0 && scale <= 3);
- ARMWord op2 = lsl(index, scale);
-
- if (!offset) {
- dtrUpRegister(transferType, srcDst, base, op2);
- return;
- }
-
- if (offset <= 0xfffff && offset >= -0xfffff) {
- add(ARMRegisters::S0, base, op2);
- dataTransfer32(transferType, srcDst, ARMRegisters::S0, offset);
- return;
- }
-
- moveImm(offset, ARMRegisters::S0);
- add(ARMRegisters::S0, ARMRegisters::S0, op2);
- dtrUpRegister(transferType, srcDst, base, ARMRegisters::S0);
-}
-
-void ARMAssembler::dataTransfer16(DataTransferTypeB transferType, RegisterID srcDst, RegisterID base, int32_t offset)
-{
- if (offset >= 0) {
- if (offset <= 0xff)
- halfDtrUp(transferType, srcDst, base, getOp2Half(offset));
- else if (offset <= 0xffff) {
- add(ARMRegisters::S0, base, Op2Immediate | (offset >> 8) | (12 << 8));
- halfDtrUp(transferType, srcDst, ARMRegisters::S0, getOp2Half(offset & 0xff));
- } else {
- moveImm(offset, ARMRegisters::S0);
- halfDtrUpRegister(transferType, srcDst, base, ARMRegisters::S0);
- }
- } else {
- if (offset >= -0xff)
- halfDtrDown(transferType, srcDst, base, getOp2Half(-offset));
- else if (offset >= -0xffff) {
- sub(ARMRegisters::S0, base, Op2Immediate | (-offset >> 8) | (12 << 8));
- halfDtrDown(transferType, srcDst, ARMRegisters::S0, getOp2Half(-offset & 0xff));
- } else {
- moveImm(offset, ARMRegisters::S0);
- halfDtrUpRegister(transferType, srcDst, base, ARMRegisters::S0);
- }
- }
-}
-
-void ARMAssembler::baseIndexTransfer16(DataTransferTypeB transferType, RegisterID srcDst, RegisterID base, RegisterID index, int scale, int32_t offset)
-{
- if (!scale && !offset) {
- halfDtrUpRegister(transferType, srcDst, base, index);
- return;
- }
-
- ARMWord op2 = lsl(index, scale);
-
- if (offset <= 0xffff && offset >= -0xffff) {
- add(ARMRegisters::S0, base, op2);
- dataTransfer16(transferType, srcDst, ARMRegisters::S0, offset);
- return;
- }
-
- moveImm(offset, ARMRegisters::S0);
- add(ARMRegisters::S0, ARMRegisters::S0, op2);
- halfDtrUpRegister(transferType, srcDst, base, ARMRegisters::S0);
-}
-
-void ARMAssembler::dataTransferFloat(DataTransferTypeFloat transferType, FPRegisterID srcDst, RegisterID base, int32_t offset)
-{
- // VFP cannot directly access memory that is not four-byte-aligned
- if (!(offset & 0x3)) {
- if (offset <= 0x3ff && offset >= 0) {
- doubleDtrUp(transferType, srcDst, base, offset >> 2);
- return;
- }
- if (offset <= 0x3ffff && offset >= 0) {
- add(ARMRegisters::S0, base, Op2Immediate | (offset >> 10) | (11 << 8));
- doubleDtrUp(transferType, srcDst, ARMRegisters::S0, (offset >> 2) & 0xff);
- return;
- }
- offset = -offset;
-
- if (offset <= 0x3ff && offset >= 0) {
- doubleDtrDown(transferType, srcDst, base, offset >> 2);
- return;
- }
- if (offset <= 0x3ffff && offset >= 0) {
- sub(ARMRegisters::S0, base, Op2Immediate | (offset >> 10) | (11 << 8));
- doubleDtrDown(transferType, srcDst, ARMRegisters::S0, (offset >> 2) & 0xff);
- return;
- }
- offset = -offset;
- }
-
- moveImm(offset, ARMRegisters::S0);
- add(ARMRegisters::S0, ARMRegisters::S0, base);
- doubleDtrUp(transferType, srcDst, ARMRegisters::S0, 0);
-}
-
-void ARMAssembler::baseIndexTransferFloat(DataTransferTypeFloat transferType, FPRegisterID srcDst, RegisterID base, RegisterID index, int scale, int32_t offset)
-{
- add(ARMRegisters::S1, base, lsl(index, scale));
- dataTransferFloat(transferType, srcDst, ARMRegisters::S1, offset);
-}
-
-PassRefPtr<ExecutableMemoryHandle> ARMAssembler::executableCopy(JSGlobalData& globalData, void* ownerUID, JITCompilationEffort effort)
-{
- // 64-bit alignment is required for next constant pool and JIT code as well
- m_buffer.flushWithoutBarrier(true);
- if (!m_buffer.isAligned(8))
- bkpt(0);
-
- RefPtr<ExecutableMemoryHandle> result = m_buffer.executableCopy(globalData, ownerUID, effort);
- char* data = reinterpret_cast<char*>(result->start());
-
- for (Jumps::Iterator iter = m_jumps.begin(); iter != m_jumps.end(); ++iter) {
- // The last bit is set if the constant must be placed on constant pool.
- int pos = (iter->m_offset) & (~0x1);
- ARMWord* ldrAddr = reinterpret_cast_ptr<ARMWord*>(data + pos);
- ARMWord* addr = getLdrImmAddress(ldrAddr);
- if (*addr != InvalidBranchTarget) {
- if (!(iter->m_offset & 1)) {
- intptr_t difference = reinterpret_cast_ptr<ARMWord*>(data + *addr) - (ldrAddr + DefaultPrefetchOffset);
-
- if ((difference <= MaximumBranchOffsetDistance && difference >= MinimumBranchOffsetDistance)) {
- *ldrAddr = B | getConditionalField(*ldrAddr) | (difference & BranchOffsetMask);
- continue;
- }
- }
- *addr = reinterpret_cast<ARMWord>(data + *addr);
- }
- }
-
- return result;
-}
-
-#if OS(LINUX) && COMPILER(RVCT)
-
-__asm void ARMAssembler::cacheFlush(void* code, size_t size)
-{
- ARM
- push {r7}
- add r1, r1, r0
- mov r7, #0xf0000
- add r7, r7, #0x2
- mov r2, #0x0
- svc #0x0
- pop {r7}
- bx lr
-}
-
-#endif
-
-} // namespace JSC
-
-#endif // ENABLE(ASSEMBLER) && CPU(ARM_TRADITIONAL)
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