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|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* 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 <exception>
#include <malloc.h>
#include <typeinfo>
#include <com/sun/star/uno/Exception.hpp>
#include <com/sun/star/uno/RuntimeException.hpp>
#include <com/sun/star/uno/genfunc.hxx>
#include <o3tl/runtimetooustring.hxx>
#include <uno/data.h>
#include "bridge.hxx"
#include "types.hxx"
#include "unointerfaceproxy.hxx"
#include "vtables.hxx"
#include "share.hxx"
#include <sal/alloca.h>
using namespace com::sun::star::uno;
namespace
{
// The call instruction within the asm section of callVirtualMethod may throw
// exceptions. So that the compiler handles this correctly, it is important
// that (a) callVirtualMethod might call dummy_can_throw_anything (although this
// never happens at runtime), which in turn can throw exceptions, and (b)
// callVirtualMethod is not inlined at its call site (so that any exceptions are
// caught which are thrown from the instruction calling callVirtualMethod):
void callVirtualMethod( void * pAdjustedThisPtr,
sal_Int32 nVtableIndex,
void * pRegisterReturn,
typelib_TypeClass eReturnType,
sal_Int32 * pStackLongs,
sal_Int32 nStackLongs ) __attribute__((noinline));
void callVirtualMethod( void * pAdjustedThisPtr,
sal_Int32 nVtableIndex,
void * pRegisterReturn,
typelib_TypeClass eReturnType,
sal_Int32 * pStackLongs,
sal_Int32 nStackLongs )
{
// parameter list is mixed list of * and values
// reference parameters are pointers
assert( pStackLongs && pAdjustedThisPtr);
static_assert( (sizeof(void *) == 4) &&
(sizeof(sal_Int32) == 4), "### unexpected size of int!" );
assert(nStackLongs && pStackLongs && "### no stack in callVirtualMethod !");
// never called
if (! pAdjustedThisPtr) CPPU_CURRENT_NAMESPACE::dummy_can_throw_anything("xxx"); // address something
long o0, o1; // for register returns
double f0d;
float f0f;
volatile long long saveReg[7];
__asm__ (
// save registers
"std %%l0, [%4]\n\t"
"mov %4, %%l0\n\t"
"mov %%l0, %%l1\n\t"
"add %%l0, 8, %%l0\n\t"
"std %%l2, [%%l0]\n\t"
"add %%l0, 8, %%l0\n\t"
"std %%l4, [%%l0]\n\t"
"add %%l0, 8, %%l0\n\t"
"std %%o0, [%%l0]\n\t"
"add %%l0, 8, %%l0\n\t"
"std %%o2, [%%l0]\n\t"
"add %%l0, 8, %%l0\n\t"
"std %%o4, [%%l0]\n\t"
"add %%l0, 8, %%l0\n\t"
"std %%l6, [%%l0]\n\t"
"mov %%l1, %%l7\n\t"
// increase our own stackframe if necessary
"mov %%sp, %%l3\n\t" // save stack ptr for readjustment
"subcc %%i5, 7, %%l0\n\t"
"ble .LmoveOn\n\t"
"nop\n\t"
"sll %%l0, 2, %%l0\n\t"
"add %%l0, 96, %%l0\n\t"
"mov %%sp, %%l1\n\t" // old stack ptr
"sub %%sp, %%l0, %%l0\n\t" // future stack ptr
"andcc %%l0, 7, %%g0\n\t" // align stack to 8
"be .LisAligned\n\t"
"nop\n\t"
"sub %%l0, 4, %%l0\n"
".LisAligned:\n\t"
"mov %%l0, %%o5\n\t" // save newly computed stack ptr
"add %%g0, 16, %%o4\n"
// now copy longs down to save register window
// and local variables
".LcopyDown:\n\t"
"ld [%%l1], %%l2\n\t"
"st %%l2,[%%l0]\n\t"
"add %%l0, 4, %%l0\n\t"
"add %%l1, 4, %%l1\n\t"
"subcc %%o4, 1, %%o4\n\t"
"bne .LcopyDown\n\t"
"mov %%o5, %%sp\n\t" // move new stack ptr (hopefully) atomically
// while register window is valid in both spaces
// (scheduling might hit in copyDown loop)
"sub %%i5, 7, %%l0\n\t" // copy parameters past the sixth to stack
"add %%i4, 28, %%l1\n\t"
"add %%sp, 92, %%l2\n"
".LcopyLong:\n\t"
"ld [%%l1], %%o0\n\t"
"st %%o0, [%%l2]\n\t"
"add %%l1, 4, %%l1\n\t"
"add %%l2, 4, %%l2\n\t"
"subcc %%l0, 1, %%l0\n\t"
"bne .LcopyLong\n\t"
"nop\n"
".LmoveOn:\n\t"
"mov %%i5, %%l0\n\t" // prepare out registers
"mov %%i4, %%l1\n\t"
"ld [%%l1], %%o0\n\t" // prepare complex return ptr
"st %%o0, [%%sp+64]\n\t"
"sub %%l0, 1, %%l0\n\t"
"add %%l1, 4, %%l1\n\t"
"ld [%%l1], %%o0\n\t"
"subcc %%l0, 1, %%l0\n\t"
"be .LdoCall\n\t"
"nop\n\t"
"add %%l1, 4, %%l1\n\t"
"ld [%%l1], %%o1\n\t"
"subcc %%l0, 1, %%l0\n\t"
"be .LdoCall\n\t"
"nop\n\t"
"add %%l1, 4, %%l1\n\t"
"ld [%%l1], %%o2\n\t"
"subcc %%l0, 1, %%l0\n\t"
"be .LdoCall\n\t"
"nop\n\t"
"add %%l1, 4, %%l1\n\t"
"ld [%%l1], %%o3\n\t"
"subcc %%l0, 1, %%l0\n\t"
"be .LdoCall\n\t"
"nop\n\t"
"add %%l1, 4, %%l1\n\t"
"ld [%%l1], %%o4\n\t"
"subcc %%l0, 1, %%l0\n\t"
"be .LdoCall\n\t"
"nop\n\t"
"add %%l1, 4, %%l1\n\t"
"ld [%%l1], %%o5\n"
".LdoCall:\n\t"
"ld [%%i0], %%l0\n\t" // get vtable ptr
"sll %%i1, 2, %%l6\n\t"
// "add %%l6, 8, %%l6\n\t"
"add %%l6, %%l0, %%l0\n\t"
// // vtable has 8byte wide entries,
// // upper half contains 2 half words, of which the first
// // is the this ptr patch !
// // first entry is (or __tf)
// "ldsh [%%l0], %%l6\n\t" // load this ptr patch
// "add %%l6, %%o0, %%o0\n\t" // patch this ptr
// "add %%l0, 4, %%l0\n\t" // get virtual function ptr
"ld [%%l0], %%l0\n\t"
"ld [%%i4], %%l2\n\t"
"subcc %%l2, %%g0, %%l2\n\t"
"bne .LcomplexCall\n\t"
"nop\n\t"
"call %%l0\n\t"
"nop\n\t"
"ba .LcallReturned\n\t"
"nop\n"
".LcomplexCall:\n\t"
"call %%l0\n\t"
"nop\n\t"
"unimp\n"
".LcallReturned:\n\t"
"mov %%l3, %%sp\n\t" // readjust stack so that our locals are where they belong
"st %%o0, %0\n\t" // save possible return registers into our locals
"st %%o1, %1\n\t"
"std %%f0, %2\n\t"
"st %%f0, %3\n\t"
// restore registers
"ldd [%%l7], %%l0\n\t"
"add %%l7, 8, %%l7\n\t"
"ldd [%%l7], %%l2\n\t"
"add %%l7, 8, %%l7\n\t"
"ldd [%%l7], %%l4\n\t"
"add %%l7, 8, %%l7\n\t"
"ldd [%%l7], %%o0\n\t"
"add %%l7, 8, %%l7\n\t"
"ldd [%%l7], %%o2\n\t"
"add %%l7, 8, %%l7\n\t"
"ldd [%%l7], %%o4\n\t"
"add %%l7, 8, %%l7\n\t"
"ldd [%%l7], %%l6\n\t"
:
"=m"(o0),
"=m"(o1),
"=m"(f0d),
"=m"(f0f),
:
"r"(&saveReg[0])
: "memory"
);
switch( eReturnType )
{
case typelib_TypeClass_HYPER:
case typelib_TypeClass_UNSIGNED_HYPER:
((long*)pRegisterReturn)[1] = o1;
case typelib_TypeClass_LONG:
case typelib_TypeClass_UNSIGNED_LONG:
case typelib_TypeClass_ENUM:
((long*)pRegisterReturn)[0] = o0;
break;
case typelib_TypeClass_CHAR:
case typelib_TypeClass_SHORT:
case typelib_TypeClass_UNSIGNED_SHORT:
*(unsigned short*)pRegisterReturn = (unsigned short)o0;
break;
case typelib_TypeClass_BOOLEAN:
case typelib_TypeClass_BYTE:
*(unsigned char*)pRegisterReturn = (unsigned char)o0;
break;
case typelib_TypeClass_FLOAT:
*(float*)pRegisterReturn = f0f;
break;
case typelib_TypeClass_DOUBLE:
*(double*)pRegisterReturn = f0d;
break;
}
}
static void cpp_call(
bridges::cpp_uno::shared::UnoInterfaceProxy * pThis,
bridges::cpp_uno::shared::VtableSlot aVtableSlot,
typelib_TypeDescriptionReference * pReturnTypeRef,
sal_Int32 nParams, typelib_MethodParameter * pParams,
void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc )
{
// max space for: complex ret ptr, this, values|ptr ...
char * pCppStack =
(char *)alloca( (nParams+2) * sizeof(sal_Int64) );
char * pCppStackStart = pCppStack;
// return
typelib_TypeDescription * pReturnTypeDescr = 0;
TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
assert(pReturnTypeDescr);
void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion
if (pReturnTypeDescr)
{
if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr ))
{
pCppReturn = pUnoReturn; // direct way for simple types
*(void**)pCppStack = NULL;
}
else
{
// complex return via ptr
pCppReturn = *(void **)pCppStack = (bridges::cpp_uno::shared::relatesToInterfaceType(pReturnTypeDescr )
? alloca( pReturnTypeDescr->nSize )
: pUnoReturn); // direct way
}
pCppStack += sizeof(void*);
}
// push this
void * pAdjustedThisPtr = reinterpret_cast< void ** >(pThis->getCppI())
+ aVtableSlot.offset;
*(void**)pCppStack = pAdjustedThisPtr;
pCppStack += sizeof( void* );
// stack space
static_assert(sizeof(void *) == sizeof(sal_Int32), "### unexpected size!");
// args
void ** pCppArgs = (void **)alloca( 3 * sizeof(void *) * nParams );
// indices of values this have to be converted (interface conversion cpp<=>uno)
sal_Int32 * pTempIndices = (sal_Int32 *)(pCppArgs + nParams);
// type descriptions for reconversions
typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * 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 ))
{
pCppArgs[ nPos ] = CPPU_CURRENT_NAMESPACE::adjustPointer(pCppStack, pParamTypeDescr );
switch (pParamTypeDescr->eTypeClass)
{
case typelib_TypeClass_HYPER:
case typelib_TypeClass_UNSIGNED_HYPER:
case typelib_TypeClass_DOUBLE:
static_assert(sizeof (double) == sizeof (sal_Int64), "boo");
*reinterpret_cast< sal_Int32 * >(pCppStack) =
*reinterpret_cast< sal_Int32 const * >(pUnoArgs[ nPos ]);
pCppStack += sizeof (sal_Int32);
*reinterpret_cast< sal_Int32 * >(pCppStack) =
*(reinterpret_cast< sal_Int32 const * >(pUnoArgs[ nPos ] ) + 1);
break;
default:
uno_copyAndConvertData(
pCppArgs[nPos], pUnoArgs[nPos], pParamTypeDescr,
pThis->getBridge()->getUno2Cpp() );
break;
}
// no longer needed
TYPELIB_DANGER_RELEASE( pParamTypeDescr );
}
else // ptr to complex value | ref
{
if (! rParam.bIn) // is pure out
{
// cpp out is constructed mem, uno out is not!
uno_constructData(
*(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
pParamTypeDescr );
pTempIndices[nTempIndices] = nPos; // default constructed for cpp call
// will be released at reconversion
ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr;
}
// is in/inout
else if (bridges::cpp_uno::shared::relatesToInterfaceType(
pParamTypeDescr ))
{
uno_copyAndConvertData(
*(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
pUnoArgs[nPos], pParamTypeDescr,
pThis->getBridge()->getUno2Cpp() );
pTempIndices[nTempIndices] = nPos; // has to be reconverted
// will be released at reconversion
ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr;
}
else // direct way
{
*(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos];
// no longer needed
TYPELIB_DANGER_RELEASE( pParamTypeDescr );
}
}
pCppStack += sizeof(sal_Int32); // standard parameter length
}
try
{
int nStackLongs = (pCppStack - pCppStackStart)/sizeof(sal_Int32);
assert( !( (pCppStack - pCppStackStart ) & 3) && "UNALIGNED STACK !!! (Please DO panic");
if( nStackLongs & 1 )
// stack has to be 8 byte aligned
nStackLongs++;
try {
callVirtualMethod(
pAdjustedThisPtr,
aVtableSlot.index,
pCppReturn,
pReturnTypeDescr->eTypeClass,
(sal_Int32 *)pCppStackStart,
nStackLongs);
} catch (css::uno::Exception &) {
throw;
} catch (std::exception & e) {
throw css::uno::RuntimeException(
"C++ code threw " + o3tl::runtimeToOUString(typeid(e).name()) + ": "
+ o3tl::runtimeToOUString(e.what()));
} catch (...) {
throw css::uno::RuntimeException("C++ code threw unknown exception");
}
// NO exception occurred...
*ppUnoExc = 0;
// reconvert temporary params
for ( ; nTempIndices--; )
{
sal_Int32 nIndex = pTempIndices[nTempIndices];
typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndices];
if (pParams[nIndex].bIn)
{
if (pParams[nIndex].bOut) // inout
{
uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value
uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
pThis->getBridge()->getCpp2Uno() );
}
}
else // pure out
{
uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
pThis->getBridge()->getCpp2Uno() );
}
// destroy temp cpp param => cpp: every param was constructed
uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release );
TYPELIB_DANGER_RELEASE( pParamTypeDescr );
}
// return value
if (pCppReturn && pUnoReturn != pCppReturn)
{
uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr,
pThis->getBridge()->getCpp2Uno() );
uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release );
}
}
catch( ... )
{
// get exception
CPPU_CURRENT_NAMESPACE::fillUnoException(*ppUnoExc, pThis->getBridge()->getCpp2Uno());
// temporary params
for ( ; nTempIndices--; )
{
sal_Int32 nIndex = pTempIndices[nTempIndices];
// destroy temp cpp param => cpp: every param was constructed
uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndices], cpp_release );
TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndices] );
}
// return type
if (pReturnTypeDescr)
TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
}
}
}
namespace bridges { namespace cpp_uno { namespace shared {
void unoInterfaceProxyDispatch(
uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr,
void * pReturn, void * pArgs[], uno_Any ** ppException )
{
#if defined BRIDGES_DEBUG
OString cstr( OUStringToOString( pMemberDescr->pTypeName, RTL_TEXTENCODING_ASCII_US ) );
fprintf( stderr, "received dispatch( %s )\n", cstr.getStr() );
#endif
// is my surrogate
bridges::cpp_uno::shared::UnoInterfaceProxy * pThis
= static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * >(pUnoI);
typelib_InterfaceTypeDescription * pTypeDescr = pThis->pTypeDescr;
switch (pMemberDescr->eTypeClass)
{
case typelib_TypeClass_INTERFACE_ATTRIBUTE:
{
VtableSlot aVtableSlot(
getVtableSlot(
reinterpret_cast<
typelib_InterfaceAttributeTypeDescription const * >(
pMemberDescr)));
if (pReturn)
{
// dependent dispatch
cpp_call(
pThis, aVtableSlot,
((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef,
0, 0, // no params
pReturn, pArgs, ppException );
}
else
{
// is SET
typelib_MethodParameter aParam;
aParam.pTypeRef =
((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef;
aParam.bIn = sal_True;
aParam.bOut = sal_False;
typelib_TypeDescriptionReference * pReturnTypeRef = 0;
OUString aVoidName("void");
typelib_typedescriptionreference_new(
&pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData );
// dependent dispatch
aVtableSlot.index += 1; // get, then set method
cpp_call(
pThis, aVtableSlot,
pReturnTypeRef,
1, &aParam,
pReturn, pArgs, ppException );
typelib_typedescriptionreference_release( pReturnTypeRef );
}
break;
}
case typelib_TypeClass_INTERFACE_METHOD:
{
VtableSlot aVtableSlot(
getVtableSlot(
reinterpret_cast<
typelib_InterfaceMethodTypeDescription const * >(
pMemberDescr)));
switch (aVtableSlot.index)
{
// standard calls
case 1: // acquire uno interface
(*pUnoI->acquire)( pUnoI );
*ppException = 0;
break;
case 2: // release uno interface
(*pUnoI->release)( pUnoI );
*ppException = 0;
break;
case 0: // queryInterface() opt
{
typelib_TypeDescription * pTD = 0;
TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() );
if (pTD)
{
uno_Interface * pInterface = 0;
(*pThis->pBridge->getUnoEnv()->getRegisteredInterface)(
pThis->pBridge->getUnoEnv(),
(void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD );
if (pInterface)
{
::uno_any_construct(
reinterpret_cast< uno_Any * >( pReturn ),
&pInterface, pTD, 0 );
(*pInterface->release)( pInterface );
TYPELIB_DANGER_RELEASE( pTD );
*ppException = 0;
break;
}
TYPELIB_DANGER_RELEASE( pTD );
}
} // else perform queryInterface()
default:
// dependent dispatch
cpp_call(
pThis, aVtableSlot,
((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef,
((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams,
((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams,
pReturn, pArgs, ppException );
}
break;
}
default:
{
::com::sun::star::uno::RuntimeException aExc(
"illegal member type description!",
::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() );
Type const & rExcType = cppu::UnoType<decltype(aExc)>::get();
// binary identical null reference
::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 );
}
}
}
} } }
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