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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 <malloc.h>
#include <com/sun/star/uno/genfunc.hxx>
#include <sal/log.hxx>
#include <uno/data.h>
#include <typelib/typedescription.hxx>
#include <bridge.hxx>
#include <cppinterfaceproxy.hxx>
#include <types.hxx>
#include <vtablefactory.hxx>
#include "call.hxx"
#include <msvc/cpp2uno.hxx>
#include <msvc/amd64.hxx>
using namespace ::com::sun::star;
extern "C" typelib_TypeClass cpp_vtable_call(sal_Int64 nOffsetAndIndex, void ** pCallStack)
{
sal_Int32 nFunctionIndex = (nOffsetAndIndex & 0xFFFFFFFF);
sal_Int32 nVtableOffset = ((nOffsetAndIndex >> 32) & 0xFFFFFFFF);
return cpp_mediate(pCallStack, nFunctionIndex, nVtableOffset, nullptr);
}
int const codeSnippetSize = 48;
namespace {
typedef enum { REGPARAM_INT, REGPARAM_FLT } RegParamKind;
}
extern "C" char privateSnippetExecutor;
// This function generates the code that acts as a proxy for the UNO function to be called.
// The generated code does the following:
// - Spills register parameters on stack
// - Loads functionIndex and vtableOffset into scratch registers
// - Jumps to privateSnippetExecutor
static unsigned char * codeSnippet(
unsigned char * code,
RegParamKind param_kind[4],
sal_Int32 nFunctionIndex,
sal_Int32 nVtableOffset )
{
sal_uInt64 nOffsetAndIndex = ( static_cast<sal_uInt64>(nVtableOffset) << 32 ) | static_cast<sal_uInt64>(nFunctionIndex);
unsigned char *p = code;
// Spill parameters
if (param_kind[0] == REGPARAM_INT)
{
// mov qword ptr 8[rsp], rcx
*p++ = 0x48; *p++ = 0x89; *p++ = 0x4C; *p++ = 0x24; *p++ = 0x08;
}
else
{
// movsd qword ptr 8[rsp], xmm0
*p++ = 0xF2; *p++ = 0x0F; *p++ = 0x11; *p++ = 0x44; *p++ = 0x24; *p++ = 0x08;
}
if ( param_kind[1] == REGPARAM_INT )
{
// mov qword ptr 16[rsp], rdx
*p++ = 0x48; *p++ = 0x89; *p++ = 0x54; *p++ = 0x24; *p++ = 0x10;
}
else
{
// movsd qword ptr 16[rsp], xmm1
*p++ = 0xF2; *p++ = 0x0F; *p++ = 0x11; *p++ = 0x4C; *p++ = 0x24; *p++ = 0x10;
}
if ( param_kind[2] == REGPARAM_INT )
{
// mov qword ptr 24[rsp], r8
*p++ = 0x4C; *p++ = 0x89; *p++ = 0x44; *p++ = 0x24; *p++ = 0x18;
}
else
{
// movsd qword ptr 24[rsp], xmm2
*p++ = 0xF2; *p++ = 0x0F; *p++ = 0x11; *p++ = 0x54; *p++ = 0x24; *p++ = 0x18;
}
if ( param_kind[3] == REGPARAM_INT )
{
// mov qword ptr 32[rsp], r9
*p++ = 0x4C;*p++ = 0x89; *p++ = 0x4C; *p++ = 0x24; *p++ = 0x20;
}
else
{
// movsd qword ptr 32[rsp], xmm3
*p++ = 0xF2; *p++ = 0x0F; *p++ = 0x11; *p++ = 0x5C; *p++ = 0x24; *p++ = 0x20;
}
// mov rcx, nOffsetAndIndex
*p++ = 0x48; *p++ = 0xB9;
*reinterpret_cast<sal_uInt64 *>(p) = nOffsetAndIndex; p += 8;
// mov r11, privateSnippetExecutor
*p++ = 0x49; *p++ = 0xBB;
*reinterpret_cast<void **>(p) = &privateSnippetExecutor; p += 8;
// jmp r11
*p++ = 0x41; *p++ = 0xFF; *p++ = 0xE3;
assert(p < code + codeSnippetSize);
return code + codeSnippetSize;
}
struct bridges::cpp_uno::shared::VtableFactory::Slot { void * fn; };
bridges::cpp_uno::shared::VtableFactory::Slot *
bridges::cpp_uno::shared::VtableFactory::mapBlockToVtable(
void * block )
{
return static_cast< Slot * >(block) + 1;
}
std::size_t bridges::cpp_uno::shared::VtableFactory::getBlockSize(
sal_Int32 slotCount)
{
return (slotCount + 1) * sizeof (Slot) + slotCount * codeSnippetSize;
}
bridges::cpp_uno::shared::VtableFactory::Slot *
bridges::cpp_uno::shared::VtableFactory::initializeBlock(
void * block,
sal_Int32 slotCount,
sal_Int32, typelib_InterfaceTypeDescription *)
{
struct Rtti {
sal_Int32 n0, n1, n2;
type_info * rtti;
Rtti():
n0(0), n1(0), n2(0),
rtti(RTTInfos::get("com.sun.star.uno.XInterface"))
{}
};
static Rtti rtti;
Slot * slots = mapBlockToVtable(block);
slots[-1].fn = &rtti;
return slots + slotCount;
}
unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions(
Slot ** slots,
unsigned char * code,
typelib_InterfaceTypeDescription const * type,
sal_Int32 nFunctionOffset,
sal_Int32 functionCount,
sal_Int32 nVtableOffset )
{
(*slots) -= functionCount;
Slot * s = *slots;
for (int member = 0; member < type->nMembers; ++member) {
typelib_TypeDescription * pTD = nullptr;
TYPELIB_DANGER_GET( &pTD, type->ppMembers[ member ] );
assert(pTD);
RegParamKind param_kind[4];
int nr = 0;
for (int i = 0; i < 4; ++i)
param_kind[i] = REGPARAM_INT;
// 'this'
++nr;
if ( pTD->eTypeClass == typelib_TypeClass_INTERFACE_ATTRIBUTE )
{
typelib_InterfaceAttributeTypeDescription * pIfaceAttrTD =
reinterpret_cast<typelib_InterfaceAttributeTypeDescription *>( pTD );
// Getter
(s++)->fn = code;
code = codeSnippet( code, param_kind, nFunctionOffset++, nVtableOffset );
if ( ! pIfaceAttrTD->bReadOnly )
{
typelib_TypeDescription * pAttrTD = nullptr;
TYPELIB_DANGER_GET( &pAttrTD, pIfaceAttrTD->pAttributeTypeRef );
assert(pAttrTD);
// Setter
if ( pAttrTD->eTypeClass == typelib_TypeClass_FLOAT ||
pAttrTD->eTypeClass == typelib_TypeClass_DOUBLE )
param_kind[nr++] = REGPARAM_FLT;
TYPELIB_DANGER_RELEASE( pAttrTD );
(s++)->fn = code;
code = codeSnippet( code, param_kind, nFunctionOffset++, nVtableOffset );
}
}
else if ( pTD->eTypeClass == typelib_TypeClass_INTERFACE_METHOD )
{
typelib_InterfaceMethodTypeDescription * pMethodTD =
reinterpret_cast<typelib_InterfaceMethodTypeDescription *>( pTD );
typelib_TypeDescription * pReturnTD = nullptr;
TYPELIB_DANGER_GET( &pReturnTD, pMethodTD->pReturnTypeRef );
assert(pReturnTD);
if ( !bridges::cpp_uno::shared::isSimpleType( pReturnTD ) )
{
// Return value
++nr;
}
for (int param = 0; nr < 4 && param < pMethodTD->nParams; ++param, ++nr)
{
typelib_TypeDescription * pParamTD = nullptr;
TYPELIB_DANGER_GET( &pParamTD, pMethodTD->pParams[param].pTypeRef );
assert(pParamTD);
if ( pParamTD->eTypeClass == typelib_TypeClass_FLOAT ||
pParamTD->eTypeClass == typelib_TypeClass_DOUBLE )
param_kind[nr] = REGPARAM_FLT;
TYPELIB_DANGER_RELEASE( pParamTD );
}
(s++)->fn = code;
code = codeSnippet( code, param_kind, nFunctionOffset++, nVtableOffset );
TYPELIB_DANGER_RELEASE( pReturnTD );
}
else
assert(false);
TYPELIB_DANGER_RELEASE( pTD );
}
return code;
}
void bridges::cpp_uno::shared::VtableFactory::flushCode(
unsigned char const *,
unsigned char const *)
{
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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