/*

* Copyright (c) 2008, 2021, Oracle and/or its affiliates. All rights reserved.

* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

*

* This code is free software; you can redistribute it and/or modify it

* under the terms of the GNU General Public License version 2 only, as

* published by the Free Software Foundation.

*

* This code is distributed in the hope that it will be useful, but WITHOUT

* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License

* version 2 for more details (a copy is included in the LICENSE file that

* accompanied this code).

*

* You should have received a copy of the GNU General Public License version

* 2 along with this work; if not, write to the Free Software Foundation,

* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

*

* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

* or visit www.oracle.com if you need additional information or have any

* questions.

*

*/

#include "precompiled.hpp"

#include "asm/assembler.hpp"

#include "asm/assembler.inline.hpp"

#include "ci/ciEnv.hpp"

#include "gc/shared/cardTableBarrierSet.hpp"

#include "gc/shared/collectedHeap.inline.hpp"

#include "interpreter/interpreter.hpp"

#include "interpreter/interpreterRuntime.hpp"

#include "interpreter/templateInterpreterGenerator.hpp"

#include "memory/resourceArea.hpp"

#include "prims/jvm_misc.hpp"

#include "prims/methodHandles.hpp"

#include "runtime/interfaceSupport.inline.hpp"

#include "runtime/objectMonitor.hpp"

#include "runtime/os.hpp"

#include "runtime/sharedRuntime.hpp"

#include "runtime/stubRoutines.hpp"

#include "utilities/hashtable.hpp"

#include "utilities/macros.hpp"

#ifdef COMPILER2

// Convert the raw encoding form into the form expected by the

// constructor for Address.

Address Address::make_raw(int base, int index, int scale, int disp, relocInfo::relocType disp_reloc) {

RelocationHolder rspec;

if (disp_reloc != relocInfo::none) {

rspec = Relocation::spec_simple(disp_reloc);

}

Register rindex = as_Register(index);

if (rindex != PC) {

assert(disp == 0, "unsupported");

Address madr(as_Register(base), rindex, lsl, scale);

madr._rspec = rspec;

return madr;

} else {

assert(scale == 0, "not supported");

Address madr(as_Register(base), disp);

madr._rspec = rspec;

return madr;

}

}

#endif

void AsmOperand::initialize_rotated_imm(unsigned int imm) {

for (int shift = 2; shift <= 24; shift += 2) {

if ((imm & ~(0xff << shift)) == 0) {

_encoding = 1 << 25 | (32 - shift) << 7 | imm >> shift;

return;

}

}

assert((imm & 0x0ffffff0) == 0, "too complicated constant: %d (%x)", imm, imm);

_encoding = 1 << 25 | 4 << 7 | imm >> 28 | imm << 4;

}

bool AsmOperand::is_rotated_imm(unsigned int imm) {

if ((imm >> 8) == 0) {

return true;

}

for (int shift = 2; shift <= 24; shift += 2) {

if ((imm & ~(0xff << shift)) == 0) {

return true;

}

}

if ((imm & 0x0ffffff0) == 0) {

return true;

}

return false;

}