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Diffstat (limited to 'bridges/source/cpp_uno/gcc3_macosx_x86-64/callvirtualmethod.cxx')
| -rw-r--r-- | bridges/source/cpp_uno/gcc3_macosx_x86-64/callvirtualmethod.cxx | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/bridges/source/cpp_uno/gcc3_macosx_x86-64/callvirtualmethod.cxx b/bridges/source/cpp_uno/gcc3_macosx_x86-64/callvirtualmethod.cxx new file mode 100644 index 000000000000..57d039595982 --- /dev/null +++ b/bridges/source/cpp_uno/gcc3_macosx_x86-64/callvirtualmethod.cxx @@ -0,0 +1,173 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#include "sal/config.h" + +#include <cstring> + +#include "cppu/macros.hxx" +#include "sal/types.h" +#include "typelib/typeclass.h" +#include "typelib/typedescription.h" + +#include "abi.hxx" +#include "callvirtualmethod.hxx" + +// The call instruction within the asm block of callVirtualMethod may throw +// exceptions. At least GCC 4.7.0 with -O0 would create (unnecessary) +// .gcc_exception_table call-site table entries around all other calls in this +// function that can throw, leading to std::terminate if the asm call throws an +// exception and the unwinding C++ personality routine finds the unexpected hole +// in the .gcc_exception_table. Therefore, make sure this function explicitly +// only calls nothrow-functions (so GCC 4.7.0 with -O0 happens to not create a +// .gcc_exception_table section at all for this function). For some reason, +// this also needs to be in a source file of its own. +// +// Also, this file should be compiled with -fnon-call-exceptions, and ideally +// there would be a way to tell the compiler that the asm block contains calls +// to functions that can potentially throw; see the mail thread starting at +// <http://gcc.gnu.org/ml/gcc/2012-03/msg00454.html> "C++: Letting compiler know +// asm block can call function that can throw?" + +void CPPU_CURRENT_NAMESPACE::callVirtualMethod( + void * pThis, sal_uInt32 nVtableIndex, void * pRegisterReturn, + typelib_TypeDescriptionReference * pReturnTypeRef, bool bSimpleReturn, + sal_uInt64 *pStack, sal_uInt32 nStack, sal_uInt64 *pGPR, sal_uInt32 nGPR, + double * pFPR, sal_uInt32 nFPR) +{ + // Should not happen, but... + if ( nFPR > x86_64::MAX_SSE_REGS ) + nFPR = x86_64::MAX_SSE_REGS; + if ( nGPR > x86_64::MAX_GPR_REGS ) + nGPR = x86_64::MAX_GPR_REGS; + + // Get pointer to method + sal_uInt64 pMethod = *((sal_uInt64 *)pThis); + pMethod += 8 * nVtableIndex; + pMethod = *((sal_uInt64 *)pMethod); + + // Load parameters to stack, if necessary + if ( nStack ) + { + // 16-bytes aligned + sal_uInt32 nStackBytes = ( ( nStack + 1 ) >> 1 ) * 16; + sal_uInt64 *pCallStack = (sal_uInt64 *) __builtin_alloca( nStackBytes ); + std::memcpy( pCallStack, pStack, nStackBytes ); + } + + // Return values + sal_uInt64 rax; + sal_uInt64 rdx; + double xmm0; + double xmm1; + + asm volatile ( + + // Fill the xmm registers + "movq %6, %%rax\n\t" + + "movsd (%%rax), %%xmm0\n\t" + "movsd 8(%%rax), %%xmm1\n\t" + "movsd 16(%%rax), %%xmm2\n\t" + "movsd 24(%%rax), %%xmm3\n\t" + "movsd 32(%%rax), %%xmm4\n\t" + "movsd 40(%%rax), %%xmm5\n\t" + "movsd 48(%%rax), %%xmm6\n\t" + "movsd 56(%%rax), %%xmm7\n\t" + + // Fill the general purpose registers + "movq %5, %%rax\n\t" + + "movq (%%rax), %%rdi\n\t" + "movq 8(%%rax), %%rsi\n\t" + "movq 16(%%rax), %%rdx\n\t" + "movq 24(%%rax), %%rcx\n\t" + "movq 32(%%rax), %%r8\n\t" + "movq 40(%%rax), %%r9\n\t" + + // Perform the call + "movq %4, %%r11\n\t" + "movq %7, %%rax\n\t" + "call *%%r11\n\t" + + // Fill the return values + "movq %%rax, %0\n\t" + "movq %%rdx, %1\n\t" + "movsd %%xmm0, %2\n\t" + "movsd %%xmm1, %3\n\t" + : "=m" ( rax ), "=m" ( rdx ), "=m" ( xmm0 ), "=m" ( xmm1 ) + : "m" ( pMethod ), "m" ( pGPR ), "m" ( pFPR ), "m" ( nFPR ) + : "rax", "rdi", "rsi", "rdx", "rcx", "r8", "r9", "r10", "r11", + "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7", + "xmm8", "xmm9", "xmm10", "xmm11", "xmm12", "xmm13", "xmm14", "xmm15" + ); + + switch (pReturnTypeRef->eTypeClass) + { + case typelib_TypeClass_HYPER: + case typelib_TypeClass_UNSIGNED_HYPER: + *reinterpret_cast<sal_uInt64 *>( pRegisterReturn ) = rax; + break; + case typelib_TypeClass_LONG: + case typelib_TypeClass_UNSIGNED_LONG: + case typelib_TypeClass_ENUM: + *reinterpret_cast<sal_uInt32 *>( pRegisterReturn ) = *reinterpret_cast<sal_uInt32*>( &rax ); + break; + case typelib_TypeClass_CHAR: + case typelib_TypeClass_SHORT: + case typelib_TypeClass_UNSIGNED_SHORT: + *reinterpret_cast<sal_uInt16 *>( pRegisterReturn ) = *reinterpret_cast<sal_uInt16*>( &rax ); + break; + case typelib_TypeClass_BOOLEAN: + case typelib_TypeClass_BYTE: + *reinterpret_cast<sal_uInt8 *>( pRegisterReturn ) = *reinterpret_cast<sal_uInt8*>( &rax ); + break; + case typelib_TypeClass_FLOAT: + case typelib_TypeClass_DOUBLE: + *reinterpret_cast<double *>( pRegisterReturn ) = xmm0; + break; + default: + { + sal_Int32 const nRetSize = pReturnTypeRef->pType->nSize; + if (bSimpleReturn && nRetSize <= 16 && nRetSize > 0) + { + sal_uInt64 longs[2]; + longs[0] = rax; + longs[1] = rdx; + + double doubles[2]; + doubles[0] = xmm0; + doubles[1] = xmm1; + x86_64::fill_struct( pReturnTypeRef, &longs[0], &doubles[0], pRegisterReturn); + } + break; + } + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |