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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <sal/config.h>
#include "abi.hxx"
int loongarch64::flatten_struct(typelib_TypeDescription* pTypeDescr, Registers& regs)
{
const typelib_CompoundTypeDescription* p
= reinterpret_cast<const typelib_CompoundTypeDescription*>(pTypeDescr);
int sum = p->nMembers;
for (sal_Int32 i = 0; i < p->nMembers; ++i)
{
typelib_TypeDescriptionReference* pTypeInStruct = p->ppTypeRefs[i];
switch (pTypeInStruct->eTypeClass)
{
case typelib_TypeClass_STRUCT:
{
typelib_TypeDescription* t = 0;
TYPELIB_DANGER_GET(&t, pTypeInStruct);
sum--;
sum += flatten_struct(t, regs);
TYPELIB_DANGER_RELEASE(t);
}
break;
case typelib_TypeClass_CHAR:
case typelib_TypeClass_BOOLEAN:
case typelib_TypeClass_BYTE:
case typelib_TypeClass_SHORT:
case typelib_TypeClass_UNSIGNED_SHORT:
case typelib_TypeClass_LONG:
case typelib_TypeClass_UNSIGNED_LONG:
case typelib_TypeClass_HYPER:
case typelib_TypeClass_UNSIGNED_HYPER:
case typelib_TypeClass_ENUM:
regs.nr_int++;
if (!regs.priorInt && !regs.priorFp)
regs.priorInt = true;
break;
case typelib_TypeClass_FLOAT:
regs.complex_float = true;
[[fallthrough]];
case typelib_TypeClass_DOUBLE:
regs.nr_fp++;
if (!regs.priorInt && !regs.priorFp)
regs.priorFp = true;
break;
default:
break;
}
}
return sum;
}
loongarch64::ReturnKind loongarch64::getReturnKind(typelib_TypeDescriptionReference* pTypeRef)
{
switch (pTypeRef->eTypeClass)
{
case typelib_TypeClass_CHAR:
case typelib_TypeClass_BOOLEAN:
case typelib_TypeClass_BYTE:
case typelib_TypeClass_SHORT:
case typelib_TypeClass_UNSIGNED_SHORT:
case typelib_TypeClass_LONG:
case typelib_TypeClass_UNSIGNED_LONG:
case typelib_TypeClass_HYPER:
case typelib_TypeClass_UNSIGNED_HYPER:
case typelib_TypeClass_ENUM:
return ReturnKind::RegistersInt;
case typelib_TypeClass_FLOAT:
case typelib_TypeClass_DOUBLE:
return ReturnKind::RegistersFp;
case typelib_TypeClass_STRUCT:
{
Registers regs = { false, false, false, 0, 0 };
typelib_TypeDescription* pTypeDescr = nullptr;
TYPELIB_DANGER_GET(&pTypeDescr, pTypeRef);
int sum = flatten_struct(pTypeDescr, regs);
TYPELIB_DANGER_RELEASE(pTypeDescr);
if ((sum == 1 || sum == 2) && sum == regs.nr_fp)
{
if (regs.complex_float && pTypeRef->pType->nSize == 8)
return ReturnKind::RegistersTwoFloat;
return ReturnKind::RegistersFp;
}
if (sum == 2 && regs.nr_fp == regs.nr_int)
{
if (regs.priorInt)
{
if (regs.complex_float && pTypeRef->pType->nSize == 8)
return ReturnKind::RegistersIntFloat;
return ReturnKind::RegistersIntFp;
}
if (regs.priorFp)
{
if (regs.complex_float && pTypeRef->pType->nSize == 8)
return ReturnKind::RegistersFloatInt;
return ReturnKind::RegistersFpInt;
}
}
}
[[fallthrough]];
default:
return ReturnKind::RegistersInt;
}
}
void loongarch64::fillReturn(typelib_TypeDescriptionReference* pTypeRef, sal_Int64* gret,
double* fret, void* pRegisterReturn)
{
ReturnKind returnKind = getReturnKind(pTypeRef);
switch (returnKind)
{
case ReturnKind::RegistersFp:
reinterpret_cast<double*>(pRegisterReturn)[0] = fret[0];
reinterpret_cast<double*>(pRegisterReturn)[1] = fret[1];
break;
case ReturnKind::RegistersTwoFloat:
memcpy(reinterpret_cast<char*>(pRegisterReturn), &(fret[0]), 4);
memcpy(reinterpret_cast<char*>(pRegisterReturn) + 4, &(fret[1]), 4);
break;
case ReturnKind::RegistersFpInt:
reinterpret_cast<double*>(pRegisterReturn)[0] = fret[0];
reinterpret_cast<sal_Int64*>(pRegisterReturn)[1] = gret[0];
break;
case ReturnKind::RegistersFloatInt:
memcpy(reinterpret_cast<char*>(pRegisterReturn), fret, 4);
memcpy(reinterpret_cast<char*>(pRegisterReturn) + 4, gret, 4);
break;
case ReturnKind::RegistersIntFp:
reinterpret_cast<sal_Int64*>(pRegisterReturn)[0] = gret[0];
reinterpret_cast<double*>(pRegisterReturn)[1] = fret[0];
break;
case ReturnKind::RegistersIntFloat:
memcpy(reinterpret_cast<char*>(pRegisterReturn), gret, 4);
memcpy(reinterpret_cast<char*>(pRegisterReturn) + 4, fret, 4);
break;
default:
reinterpret_cast<sal_Int64*>(pRegisterReturn)[0] = gret[0];
reinterpret_cast<sal_Int64*>(pRegisterReturn)[1] = gret[1];
break;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
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