Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 178 insertions, 0 deletions

diff --git a/bridges/source/cpp_uno/gcc3_linux_x86-64/callvirtualmethod.cxx b/bridges/source/cpp_uno/gcc3_linux_x86-64/callvirtualmethod.cxx
new file mode 100644
index 000000000..680e8da81
--- /dev/null
+++ b/bridges/source/cpp_uno/gcc3_linux_x86-64/callvirtualmethod.cxx
@@ -0,0 +1,178 @@
+/* -*- 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 <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, double * pFPR)
+{
+    // Work around Clang -fsanitize=address "inline assembly requires more
+    // registers than available" error:
+    struct Data {
+        sal_uInt64 pMethod;
+        sal_uInt64 * pStack;
+        sal_uInt32 nStack;
+        sal_uInt64 * pGPR;
+        double * pFPR;
+        // Return values:
+        sal_uInt64 rax;
+        sal_uInt64 rdx;
+        double xmm0;
+        double xmm1;
+    } data;
+    data.pStack = pStack;
+    data.nStack = nStack;
+    data.pGPR = pGPR;
+    data.pFPR = pFPR;
+
+    // Get pointer to method
+    sal_uInt64 pMethod = *static_cast<sal_uInt64 *>(pThis);
+    pMethod += 8 * nVtableIndex;
+    data.pMethod = *reinterpret_cast<sal_uInt64 *>(pMethod);
+
+    asm volatile (
+        // Push arguments to stack
+        "movq %%rsp, %%r12\n\t"
+        "movl 16%0, %%ecx\n\t"
+        "jrcxz .Lpushed\n\t"
+        "xor %%rax, %%rax\n\t"
+        "leaq (%%rax, %%rcx, 8), %%rax\n\t"
+        "subq %%rax, %%rsp\n\t"
+        "andq $-9, %%rsp\n\t" // 16-bytes aligned
+        "movq 8%0, %%rsi\n\t"
+        "\n.Lpush:\n\t"
+        "decq %%rcx\n\t"
+        "movq (%%rsi, %%rcx, 8), %%rax\n\t"
+        "movq %%rax, (%%rsp, %%rcx, 8)\n\t"
+        "jnz .Lpush\n\t"
+        "\n.Lpushed:\n\t"
+
+        // Fill the xmm registers
+        "movq 32%0, %%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 24%0, %%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 0%0, %%r11\n\t"
+        "call *%%r11\n\t"
+
+        // Fill the return values
+        "movq   %%rax, 40%0\n\t"
+        "movq   %%rdx, 48%0\n\t"
+        "movsd %%xmm0, 56%0\n\t"
+        "movsd %%xmm1, 64%0\n\t"
+
+        // Reset %rsp
+        "movq %%r12, %%rsp\n\t"
+        :: "o" (data)
+        : "rax", "rdi", "rsi", "rdx", "rcx", "r8", "r9", "r10", "r11", "r12",
+          "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7",
+          "xmm8", "xmm9", "xmm10", "xmm11", "xmm12", "xmm13", "xmm14", "xmm15",
+          "memory"
+    );
+
+    switch (pReturnTypeRef->eTypeClass)
+    {
+    case typelib_TypeClass_HYPER:
+    case typelib_TypeClass_UNSIGNED_HYPER:
+        *static_cast<sal_uInt64 *>( pRegisterReturn ) = data.rax;
+        break;
+    case typelib_TypeClass_LONG:
+    case typelib_TypeClass_UNSIGNED_LONG:
+    case typelib_TypeClass_ENUM:
+        *static_cast<sal_uInt32 *>( pRegisterReturn ) = *reinterpret_cast<sal_uInt32*>( &data.rax );
+        break;
+    case typelib_TypeClass_CHAR:
+    case typelib_TypeClass_SHORT:
+    case typelib_TypeClass_UNSIGNED_SHORT:
+        *static_cast<sal_uInt16 *>( pRegisterReturn ) = *reinterpret_cast<sal_uInt16*>( &data.rax );
+        break;
+    case typelib_TypeClass_BOOLEAN:
+    case typelib_TypeClass_BYTE:
+        *static_cast<sal_uInt8 *>( pRegisterReturn ) = *reinterpret_cast<sal_uInt8*>( &data.rax );
+        break;
+    case typelib_TypeClass_FLOAT:
+    case typelib_TypeClass_DOUBLE:
+        *static_cast<double *>( pRegisterReturn ) = data.xmm0;
+        break;
+    default:
+        {
+            sal_Int32 const nRetSize = pReturnTypeRef->pType->nSize;
+            if (bSimpleReturn && nRetSize <= 16 && nRetSize > 0)
+            {
+                sal_uInt64 longs[2];
+                longs[0] = data.rax;
+                longs[1] = data.rdx;
+
+                double doubles[2];
+                doubles[0] = data.xmm0;
+                doubles[1] = data.xmm1;
+                x86_64::fill_struct( pReturnTypeRef, &longs[0], &doubles[0], pRegisterReturn);
+            }
+            break;
+        }
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */