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/*
* Copyright (C) 2013, 2014 Apple Inc. 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. ``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
* 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"
#include "RegisterSet.h"
#if ENABLE(JIT)
#include "GPRInfo.h"
#include "MacroAssembler.h"
#include "JSCInlines.h"
#include <wtf/CommaPrinter.h>
namespace JSC {
RegisterSet RegisterSet::stackRegisters()
{
return RegisterSet(
MacroAssembler::stackPointerRegister,
MacroAssembler::framePointerRegister);
}
RegisterSet RegisterSet::reservedHardwareRegisters()
{
#if CPU(ARM64)
return RegisterSet(ARM64Registers::lr);
#else
return RegisterSet();
#endif
}
RegisterSet RegisterSet::runtimeRegisters()
{
#if USE(JSVALUE64)
return RegisterSet(GPRInfo::tagTypeNumberRegister, GPRInfo::tagMaskRegister);
#else
return RegisterSet();
#endif
}
RegisterSet RegisterSet::specialRegisters()
{
return RegisterSet(
stackRegisters(), reservedHardwareRegisters(), runtimeRegisters());
}
RegisterSet RegisterSet::calleeSaveRegisters()
{
RegisterSet result;
#if CPU(X86)
result.set(X86Registers::ebx);
result.set(X86Registers::ebp);
result.set(X86Registers::edi);
result.set(X86Registers::esi);
#elif CPU(X86_64)
result.set(X86Registers::ebx);
result.set(X86Registers::ebp);
result.set(X86Registers::r12);
result.set(X86Registers::r13);
result.set(X86Registers::r14);
result.set(X86Registers::r15);
#elif CPU(ARM_THUMB2)
result.set(ARMRegisters::r4);
result.set(ARMRegisters::r5);
result.set(ARMRegisters::r6);
result.set(ARMRegisters::r8);
#if !PLATFORM(IOS)
result.set(ARMRegisters::r9);
#endif
result.set(ARMRegisters::r10);
result.set(ARMRegisters::r11);
#elif CPU(ARM_TRADITIONAL)
result.set(ARMRegisters::r4);
result.set(ARMRegisters::r5);
result.set(ARMRegisters::r6);
result.set(ARMRegisters::r7);
result.set(ARMRegisters::r8);
result.set(ARMRegisters::r9);
result.set(ARMRegisters::r10);
result.set(ARMRegisters::r11);
#elif CPU(ARM64)
// We don't include LR in the set of callee-save registers even though it technically belongs
// there. This is because we use this set to describe the set of registers that need to be saved
// beyond what you would save by the platform-agnostic "preserve return address" and "restore
// return address" operations in CCallHelpers.
for (
ARM64Registers::RegisterID reg = ARM64Registers::x19;
reg <= ARM64Registers::x28;
reg = static_cast<ARM64Registers::RegisterID>(reg + 1))
result.set(reg);
result.set(ARM64Registers::fp);
for (
ARM64Registers::FPRegisterID reg = ARM64Registers::q8;
reg <= ARM64Registers::q15;
reg = static_cast<ARM64Registers::FPRegisterID>(reg + 1))
result.set(reg);
#else
UNREACHABLE_FOR_PLATFORM();
#endif
return result;
}
RegisterSet RegisterSet::allGPRs()
{
RegisterSet result;
for (MacroAssembler::RegisterID reg = MacroAssembler::firstRegister(); reg <= MacroAssembler::lastRegister(); reg = static_cast<MacroAssembler::RegisterID>(reg + 1))
result.set(reg);
return result;
}
RegisterSet RegisterSet::allFPRs()
{
RegisterSet result;
for (MacroAssembler::FPRegisterID reg = MacroAssembler::firstFPRegister(); reg <= MacroAssembler::lastFPRegister(); reg = static_cast<MacroAssembler::FPRegisterID>(reg + 1))
result.set(reg);
return result;
}
RegisterSet RegisterSet::allRegisters()
{
RegisterSet result;
result.merge(allGPRs());
result.merge(allFPRs());
return result;
}
size_t RegisterSet::numberOfSetGPRs() const
{
RegisterSet temp = *this;
temp.filter(allGPRs());
return temp.numberOfSetRegisters();
}
size_t RegisterSet::numberOfSetFPRs() const
{
RegisterSet temp = *this;
temp.filter(allFPRs());
return temp.numberOfSetRegisters();
}
void RegisterSet::dump(PrintStream& out) const
{
CommaPrinter comma;
out.print("[");
for (Reg reg = Reg::first(); reg <= Reg::last(); reg = reg.next()) {
if (get(reg))
out.print(comma, reg);
}
out.print("]");
}
} // namespace JSC
#endif // ENABLE(JIT)
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