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libreoffice/bridges/source/cpp_uno/gcc3_linux_loongarch64/cpp2uno.cxx
Daniel Baumann 8e63e14cf6
Adding upstream version 4:25.2.3.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-22 16:20:04 +02:00

564 lines
21 KiB
C++

/* -*- 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 <com/sun/star/uno/genfunc.hxx>
#include <sal/log.hxx>
#include <typelib/typedescription.hxx>
#include <uno/data.h>
#include <osl/endian.h>
#include "bridge.hxx"
#include "cppinterfaceproxy.hxx"
#include "types.hxx"
#include "vtablefactory.hxx"
#include "call.hxx"
#include "share.hxx"
#include "abi.hxx"
#include <stdio.h>
#include <string.h>
#include <typeinfo>
using namespace com::sun::star::uno;
namespace CPPU_CURRENT_NAMESPACE
{
bool is_complex_struct(const typelib_TypeDescription* type)
{
const typelib_CompoundTypeDescription* p
= reinterpret_cast<const typelib_CompoundTypeDescription*>(type);
for (sal_Int32 i = 0; i < p->nMembers; ++i)
{
if (p->ppTypeRefs[i]->eTypeClass == typelib_TypeClass_STRUCT
|| p->ppTypeRefs[i]->eTypeClass == typelib_TypeClass_EXCEPTION)
{
typelib_TypeDescription* t = 0;
TYPELIB_DANGER_GET(&t, p->ppTypeRefs[i]);
bool b = is_complex_struct(t);
TYPELIB_DANGER_RELEASE(t);
if (b)
{
return true;
}
}
else if (!bridges::cpp_uno::shared::isSimpleType(p->ppTypeRefs[i]->eTypeClass))
return true;
}
if (p->pBaseTypeDescription != 0)
return is_complex_struct(&p->pBaseTypeDescription->aBase);
return false;
}
bool return_in_hidden_param(typelib_TypeDescriptionReference* pTypeRef)
{
if (bridges::cpp_uno::shared::isSimpleType(pTypeRef))
return false;
else if (pTypeRef->eTypeClass == typelib_TypeClass_STRUCT
|| pTypeRef->eTypeClass == typelib_TypeClass_EXCEPTION)
{
typelib_TypeDescription* pTypeDescr = 0;
TYPELIB_DANGER_GET(&pTypeDescr, pTypeRef);
//A Composite Type not larger than 16 bytes is returned in up to two GPRs
bool bRet = pTypeDescr->nSize > 16 || is_complex_struct(pTypeDescr);
TYPELIB_DANGER_RELEASE(pTypeDescr);
return bRet;
}
return true;
}
}
namespace
{
static int cpp2uno_call(bridges::cpp_uno::shared::CppInterfaceProxy* pThis,
const typelib_TypeDescription* pMemberTypeDescr,
typelib_TypeDescriptionReference* pReturnTypeRef, // 0 indicates void return
sal_Int32 nParams, typelib_MethodParameter* pParams, void** gpreg,
void** fpreg, void** ovrflw,
sal_uInt64* pRegisterReturn /* space for register return */)
{
sal_Int32 gCount = 0;
sal_Int32 fCount = 0;
sal_Int32 sp = 0;
// return
typelib_TypeDescription* pReturnTypeDescr = 0;
if (pReturnTypeRef)
TYPELIB_DANGER_GET(&pReturnTypeDescr, pReturnTypeRef);
loongarch64::ReturnKind returnKind
= (pReturnTypeRef == nullptr || pReturnTypeRef->eTypeClass == typelib_TypeClass_VOID)
? loongarch64::ReturnKind::RegistersInt
: loongarch64::getReturnKind(pReturnTypeRef);
void* pUnoReturn = 0;
void* pCppReturn = 0; // complex return ptr: if != 0 && != pUnoReturn, reconversion need
if (pReturnTypeDescr)
{
if (CPPU_CURRENT_NAMESPACE::return_in_hidden_param(pReturnTypeRef))
{
pCppReturn = gpreg[gCount++]; // complex return via ptr (pCppReturn)
pUnoReturn = (bridges::cpp_uno::shared::relatesToInterfaceType(pReturnTypeDescr)
? alloca(pReturnTypeDescr->nSize)
: pCppReturn); // direct way
}
else
{
pUnoReturn = pRegisterReturn; // direct way for simple types
}
}
// pop this
gCount++;
// stack space
static_assert(sizeof(void*) == sizeof(sal_Int64), "### unexpected size!");
// parameters
void** pUnoArgs = (void**)alloca(4 * sizeof(void*) * nParams);
void** pCppArgs = pUnoArgs + nParams;
// indices of values this have to be converted (interface conversion cpp<=>uno)
sal_Int32* pTempIndices = (sal_Int32*)(pUnoArgs + (2 * nParams));
// type descriptions for reconversions
typelib_TypeDescription** ppTempParamTypeDescr
= (typelib_TypeDescription**)(pUnoArgs + (3 * nParams));
sal_Int32 nTempIndices = 0;
for (sal_Int32 nPos = 0; nPos < nParams; ++nPos)
{
const typelib_MethodParameter& rParam = pParams[nPos];
typelib_TypeDescription* pParamTypeDescr = 0;
TYPELIB_DANGER_GET(&pParamTypeDescr, rParam.pTypeRef);
if (!rParam.bOut && bridges::cpp_uno::shared::isSimpleType(pParamTypeDescr)) // value
{
switch (pParamTypeDescr->eTypeClass)
{
case typelib_TypeClass_FLOAT:
case typelib_TypeClass_DOUBLE:
pCppArgs[nPos]
= fCount != MAX_FP_REGS
? &(fpreg[fCount++])
: (gCount != MAX_GP_REGS ? &(gpreg[gCount++]) : &(ovrflw[sp++]));
pUnoArgs[nPos] = pCppArgs[nPos];
break;
default:
pCppArgs[nPos] = gCount == MAX_GP_REGS ? &(ovrflw[sp++]) : &(gpreg[gCount++]);
pUnoArgs[nPos] = pCppArgs[nPos];
break;
}
// no longer needed
TYPELIB_DANGER_RELEASE(pParamTypeDescr);
}
else // ptr to complex value | ref
{
void* pCppStack;
pCppStack = gCount == MAX_GP_REGS ? ovrflw[sp++] : gpreg[gCount++];
pCppArgs[nPos] = pCppStack;
if (!rParam.bIn) // is pure out
{
// uno out is unconstructed mem!
pUnoArgs[nPos] = alloca(pParamTypeDescr->nSize);
pTempIndices[nTempIndices] = nPos;
// will be released at reconversion
ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr;
}
// is in/inout
else if (bridges::cpp_uno::shared::relatesToInterfaceType(pParamTypeDescr))
{
uno_copyAndConvertData(pUnoArgs[nPos] = alloca(pParamTypeDescr->nSize), pCppStack,
pParamTypeDescr, pThis->getBridge()->getCpp2Uno());
pTempIndices[nTempIndices] = nPos; // has to be reconverted
// will be released at reconversion
ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr;
}
else // direct way
{
pUnoArgs[nPos] = pCppStack;
// no longer needed
TYPELIB_DANGER_RELEASE(pParamTypeDescr);
}
}
}
// ExceptionHolder
uno_Any aUnoExc; // Any will be constructed by callee
uno_Any* pUnoExc = &aUnoExc;
// invoke uno dispatch call
(*pThis->getUnoI()->pDispatcher)(pThis->getUnoI(), pMemberTypeDescr, pUnoReturn, pUnoArgs,
&pUnoExc);
// in case an exception occurred...
if (pUnoExc)
{
// destruct temporary in/inout params
for (; nTempIndices--;)
{
sal_Int32 nIndex = pTempIndices[nTempIndices];
if (pParams[nIndex].bIn) // is in/inout => was constructed
uno_destructData(pUnoArgs[nIndex], ppTempParamTypeDescr[nTempIndices], 0);
TYPELIB_DANGER_RELEASE(ppTempParamTypeDescr[nTempIndices]);
}
if (pReturnTypeDescr)
TYPELIB_DANGER_RELEASE(pReturnTypeDescr);
CPPU_CURRENT_NAMESPACE::raiseException(&aUnoExc, pThis->getBridge()->getUno2Cpp());
// has to destruct the any
// is here for dummy
return -1;
}
else // else no exception occurred...
{
// temporary params
for (; nTempIndices--;)
{
sal_Int32 nIndex = pTempIndices[nTempIndices];
typelib_TypeDescription* pParamTypeDescr = ppTempParamTypeDescr[nTempIndices];
if (pParams[nIndex].bOut) // inout/out
{
// convert and assign
uno_destructData(pCppArgs[nIndex], pParamTypeDescr, cpp_release);
uno_copyAndConvertData(pCppArgs[nIndex], pUnoArgs[nIndex], pParamTypeDescr,
pThis->getBridge()->getUno2Cpp());
}
// destroy temp uno param
uno_destructData(pUnoArgs[nIndex], pParamTypeDescr, 0);
TYPELIB_DANGER_RELEASE(pParamTypeDescr);
}
// return
if (pCppReturn) // has complex return
{
if (pUnoReturn != pCppReturn) // needs reconversion
{
uno_copyAndConvertData(pCppReturn, pUnoReturn, pReturnTypeDescr,
pThis->getBridge()->getUno2Cpp());
// destroy temp uno return
uno_destructData(pUnoReturn, pReturnTypeDescr, 0);
}
// complex return ptr is set to return reg
*(void**)pRegisterReturn = pCppReturn;
}
if (pReturnTypeDescr)
{
TYPELIB_DANGER_RELEASE(pReturnTypeDescr);
}
switch (returnKind)
{
case loongarch64::ReturnKind::RegistersIntFloat:
memcpy(pRegisterReturn + 1, static_cast<char*>(pUnoReturn) + 4, 4);
[[fallthrough]];
case loongarch64::ReturnKind::RegistersIntFp:
return 0;
case loongarch64::ReturnKind::RegistersFloatInt:
memcpy(pRegisterReturn + 1, static_cast<char*>(pUnoReturn) + 4, 4);
[[fallthrough]];
case loongarch64::ReturnKind::RegistersFpInt:
return 1;
case loongarch64::ReturnKind::RegistersTwoFloat:
memcpy(pRegisterReturn + 1, static_cast<char*>(pUnoReturn) + 4, 4);
[[fallthrough]];
default:
return -1;
}
}
}
/**
* is called on incoming vtable calls
* (called by asm snippets)
*/
int cpp_vtable_call(sal_Int32 nFunctionIndex, sal_Int32 nVtableOffset, void** gpreg, void** fpreg,
void** ovrflw, sal_uInt64* pRegisterReturn /* space for register return */)
{
static_assert(sizeof(sal_Int64) == sizeof(void*), "### unexpected!");
// gpreg: [ret *], this, [other gpr params]
// fpreg: [fpr params]
// ovrflw: [gpr or fpr params (properly aligned)]
void* pThis;
if (nFunctionIndex & 0x80000000)
{
nFunctionIndex &= 0x7fffffff;
pThis = gpreg[1];
}
else
{
pThis = gpreg[0];
}
pThis = static_cast<char*>(pThis) - nVtableOffset;
bridges::cpp_uno::shared::CppInterfaceProxy* pCppI
= bridges::cpp_uno::shared::CppInterfaceProxy::castInterfaceToProxy(pThis);
typelib_InterfaceTypeDescription* pTypeDescr = pCppI->getTypeDescr();
if (nFunctionIndex >= pTypeDescr->nMapFunctionIndexToMemberIndex)
{
SAL_WARN("bridges", "illegal " << OUString::unacquired(&pTypeDescr->aBase.pTypeName)
<< " vtable index " << nFunctionIndex << "/"
<< pTypeDescr->nMapFunctionIndexToMemberIndex);
throw RuntimeException(("illegal " + OUString::unacquired(&pTypeDescr->aBase.pTypeName)
+ " vtable index " + OUString::number(nFunctionIndex) + "/"
+ OUString::number(pTypeDescr->nMapFunctionIndexToMemberIndex)),
(XInterface*)pThis);
}
// determine called method
sal_Int32 nMemberPos = pTypeDescr->pMapFunctionIndexToMemberIndex[nFunctionIndex];
assert(nMemberPos < pTypeDescr->nAllMembers);
TypeDescription aMemberDescr(pTypeDescr->ppAllMembers[nMemberPos]);
int eRet;
switch (aMemberDescr.get()->eTypeClass)
{
case typelib_TypeClass_INTERFACE_ATTRIBUTE:
{
typelib_TypeDescriptionReference* pAttrTypeRef
= reinterpret_cast<typelib_InterfaceAttributeTypeDescription*>(aMemberDescr.get())
->pAttributeTypeRef;
if (pTypeDescr->pMapMemberIndexToFunctionIndex[nMemberPos] == nFunctionIndex)
{
// is GET method
eRet = cpp2uno_call(pCppI, aMemberDescr.get(), pAttrTypeRef, 0, 0, // no params
gpreg, fpreg, ovrflw, pRegisterReturn);
}
else
{
// is SET method
typelib_MethodParameter aParam;
aParam.pTypeRef = pAttrTypeRef;
aParam.bIn = sal_True;
aParam.bOut = sal_False;
eRet = cpp2uno_call(pCppI, aMemberDescr.get(),
0, // indicates void return
1, &aParam, gpreg, fpreg, ovrflw, pRegisterReturn);
}
break;
}
case typelib_TypeClass_INTERFACE_METHOD:
{
// is METHOD
switch (nFunctionIndex)
{
case 1: // acquire()
pCppI->acquireProxy(); // non virtual call!
eRet = -1;
break;
case 2: // release()
pCppI->releaseProxy(); // non virtual call!
eRet = -1;
break;
case 0: // queryInterface() opt
{
typelib_TypeDescription* pTD = 0;
TYPELIB_DANGER_GET(&pTD, reinterpret_cast<Type*>(gpreg[2])->getTypeLibType());
if (pTD)
{
XInterface* pInterface = 0;
(*pCppI->getBridge()->getCppEnv()->getRegisteredInterface)(
pCppI->getBridge()->getCppEnv(), (void**)&pInterface,
pCppI->getOid().pData,
reinterpret_cast<typelib_InterfaceTypeDescription*>(pTD));
if (pInterface)
{
::uno_any_construct(reinterpret_cast<uno_Any*>(gpreg[0]), &pInterface,
pTD, cpp_acquire);
pInterface->release();
TYPELIB_DANGER_RELEASE(pTD);
reinterpret_cast<void**>(pRegisterReturn)[0] = gpreg[0];
eRet = -1;
break;
}
TYPELIB_DANGER_RELEASE(pTD);
}
} // else perform queryInterface()
[[fallthrough]];
default:
typelib_InterfaceMethodTypeDescription* pMethodTD
= reinterpret_cast<typelib_InterfaceMethodTypeDescription*>(
aMemberDescr.get());
eRet = cpp2uno_call(pCppI, aMemberDescr.get(), pMethodTD->pReturnTypeRef,
pMethodTD->nParams, pMethodTD->pParams, gpreg, fpreg,
ovrflw, pRegisterReturn);
}
break;
}
default:
{
throw RuntimeException("no member description found!", (XInterface*)pThis);
}
}
return eRet;
}
extern "C" void privateSnippetExecutor(...);
int const codeSnippetSize = 0x34;
unsigned char* codeSnippet(unsigned char* code, sal_Int32 functionIndex, sal_Int32 vtableOffset,
bool bHasHiddenParam)
{
if (bHasHiddenParam)
functionIndex |= 0x80000000;
unsigned int* p = (unsigned int*)code;
assert((((unsigned long)code) & 0x3) == 0); //aligned to 4 otherwise a mistake
/* generate this code */
/*
# index
0: 14000012 lu12i.w $t6,0x0
4: 34420000 ori $t6,$t6,0x0
# privateSnippetExecutor
8: 14000014 lu12i.w $t8,0x0
c: 03800294 ori $t8,$t8,0x0
10: 16000014 lu32i.d $t8,0x0
14: 03000294 lu52i.d $t8,$t8,0x0
# cpp_vtable_call
18: 14000011 lu12i.w $t5,0x0
1c: 03800231 ori $t5,$t5,0x0
20: 16000011 lu32i.d $t5,0x0
24: 03000231 lu52i.d $t5,$t5,0x0
# offset
28: 14000013 lu12i.w $t7,0x0
2c: 03800273 ori $t7,$t7,0x0
30: 4c000280 jr $t8
*/
*p++ = 0x14000012 | (((functionIndex >> 12) & 0x000fffff) << 5);
*p++ = 0x03800252 | ((functionIndex & 0x00000fff) << 10);
*p++ = 0x14000014 | (((((unsigned long)privateSnippetExecutor) >> 12) & 0x000fffff) << 5);
*p++ = 0x03800294 | ((((unsigned long)privateSnippetExecutor) & 0x00000fff) << 10);
*p++ = 0x16000014 | (((((unsigned long)privateSnippetExecutor) >> 32) & 0x000fffff) << 5);
*p++ = 0x03000294 | (((((unsigned long)privateSnippetExecutor) >> 52) & 0x00000fff) << 10);
*p++ = 0x14000011 | (((((unsigned long)cpp_vtable_call) >> 12) & 0x000fffff) << 5);
*p++ = 0x03800231 | ((((unsigned long)cpp_vtable_call) & 0x00000fff) << 10);
*p++ = 0x16000011 | (((((unsigned long)cpp_vtable_call) >> 32) & 0x000fffff) << 5);
*p++ = 0x03000231 | (((((unsigned long)cpp_vtable_call) >> 52) & 0x00000fff) << 10);
*p++ = 0x14000013 | (((vtableOffset >> 12) & 0x000fffff) << 5);
*p++ = 0x03800273 | ((vtableOffset & 0x00000fff) << 10);
*p++ = 0x4c000280;
return (code + codeSnippetSize);
}
}
void bridges::cpp_uno::shared::VtableFactory::flushCode(unsigned char const* bptr,
unsigned char const* eptr)
{
asm volatile("ibar 0" :::);
}
struct bridges::cpp_uno::shared::VtableFactory::Slot
{
void const* fn;
};
bridges::cpp_uno::shared::VtableFactory::Slot*
bridges::cpp_uno::shared::VtableFactory::mapBlockToVtable(void* block)
{
return static_cast<Slot*>(block) + 2;
}
std::size_t bridges::cpp_uno::shared::VtableFactory::getBlockSize(sal_Int32 slotCount)
{
return (slotCount + 2) * sizeof(Slot) + slotCount * codeSnippetSize;
}
namespace
{
// Some dummy type whose RTTI is used in the synthesized proxy vtables to make uses of dynamic_cast
// on such proxy objects not crash:
struct ProxyRtti
{
};
}
bridges::cpp_uno::shared::VtableFactory::Slot*
bridges::cpp_uno::shared::VtableFactory::initializeBlock(void* block, sal_Int32 slotCount,
sal_Int32,
typelib_InterfaceTypeDescription*)
{
Slot* slots = mapBlockToVtable(block);
slots[-2].fn = 0; //null
slots[-1].fn = &typeid(ProxyRtti);
return slots + slotCount;
}
unsigned char* bridges::cpp_uno::shared::VtableFactory::addLocalFunctions(
Slot** slots, unsigned char* code, sal_PtrDiff writetoexecdiff,
typelib_InterfaceTypeDescription const* type, sal_Int32 functionOffset, sal_Int32 functionCount,
sal_Int32 vtableOffset)
{
(*slots) -= functionCount;
Slot* s = *slots;
for (sal_Int32 i = 0; i < type->nMembers; ++i)
{
typelib_TypeDescription* member = 0;
TYPELIB_DANGER_GET(&member, type->ppMembers[i]);
assert(member != 0);
switch (member->eTypeClass)
{
case typelib_TypeClass_INTERFACE_ATTRIBUTE:
// Getter:
(s++)->fn = code + writetoexecdiff;
code = codeSnippet(
code, functionOffset++, vtableOffset,
CPPU_CURRENT_NAMESPACE::return_in_hidden_param(
reinterpret_cast<typelib_InterfaceAttributeTypeDescription*>(member)
->pAttributeTypeRef));
// Setter:
if (!reinterpret_cast<typelib_InterfaceAttributeTypeDescription*>(member)
->bReadOnly)
{
(s++)->fn = code + writetoexecdiff;
code = codeSnippet(code, functionOffset++, vtableOffset, false);
}
break;
case typelib_TypeClass_INTERFACE_METHOD:
(s++)->fn = code + writetoexecdiff;
code = codeSnippet(
code, functionOffset++, vtableOffset,
CPPU_CURRENT_NAMESPACE::return_in_hidden_param(
reinterpret_cast<typelib_InterfaceMethodTypeDescription*>(member)
->pReturnTypeRef));
break;
default:
assert(false);
break;
}
TYPELIB_DANGER_RELEASE(member);
}
return code;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */