--- a/bridges/source/cpp_uno/gcc3_linux_x86-64/call.hxx
+++ b/bridges/source/cpp_uno/gcc3_linux_x86-64/call.hxx
@@ -24,9 +24,22 @@
 
 #include <sal/types.h>
 
+namespace x86_64
+{
+    union funArg
+    {
+        sal_uInt64 val;
+        void * p;
+
+        operator sal_uInt64() const noexcept { return val; }
+        template <typename T>
+        operator T *() const noexcept { return static_cast<T *>( p ); }
+    };
+} // namespace x86_64
+
 extern "C" typelib_TypeClass cpp_vtable_call(
     sal_Int32 nFunctionIndex, sal_Int32 nVtableOffset,
-    void ** gpreg, void ** fpreg, void ** ovrflw,
+    x86_64::funArg * gpreg, x86_64::funArg * fpreg, x86_64::funArg * ovrflw,
     sal_uInt64 * pRegisterReturn /* space for register return */ );
 
 #endif
--- a/bridges/source/cpp_uno/gcc3_linux_x86-64/callvirtualmethod.cxx
+++ b/bridges/source/cpp_uno/gcc3_linux_x86-64/callvirtualmethod.cxx
@@ -54,25 +54,25 @@
     // registers than available" error:
     struct Data {
         sal_uInt64 pMethod;
-        sal_uInt64 * pStack;
-        sal_uInt32 nStack;
-        sal_uInt64 * pGPR;
-        double * pFPR;
+        sal_uInt64 pStack;
+        sal_uInt64 nStack;
+        sal_uInt64 pGPR;
+        sal_uInt64 pFPR;
         // Return values:
         sal_uInt64 rax;
         sal_uInt64 rdx;
         double xmm0;
         double xmm1;
     } data;
-    data.pStack = pStack;
+    data.pStack = reinterpret_cast<sal_uIntPtr>(pStack);
     data.nStack = nStack;
-    data.pGPR = pGPR;
-    data.pFPR = pFPR;
+    data.pGPR = reinterpret_cast<sal_uIntPtr>(pGPR);
+    data.pFPR = reinterpret_cast<sal_uIntPtr>(pFPR);
 
     // Get pointer to method
-    sal_uInt64 pMethod = *static_cast<sal_uInt64 *>(pThis);
-    pMethod += 8 * nVtableIndex;
-    data.pMethod = *reinterpret_cast<sal_uInt64 *>(pMethod);
+    sal_uIntPtr pMethod = *static_cast<sal_uIntPtr *>(pThis);
+    pMethod += sizeof(void *) * nVtableIndex;
+    data.pMethod = *reinterpret_cast<sal_uIntPtr *>(pMethod);
 
     asm volatile (
         // Push arguments to stack
--- a/bridges/source/cpp_uno/gcc3_linux_x86-64/cpp2uno.cxx
+++ b/bridges/source/cpp_uno/gcc3_linux_x86-64/cpp2uno.cxx
@@ -59,7 +59,7 @@
     const typelib_TypeDescription * pMemberTypeDescr,
     typelib_TypeDescriptionReference * pReturnTypeRef, // 0 indicates void return
     sal_Int32 nParams, typelib_MethodParameter * pParams,
-    void ** gpreg, void ** fpreg, void ** ovrflw,
+    x86_64::funArg * gpreg, x86_64::funArg * fpreg, x86_64::funArg * ovrflw,
     sal_uInt64 * pRegisterReturn /* space for register return */ )
 {
     unsigned int nr_gpr = 0; //number of gpr registers used
@@ -233,7 +233,7 @@
                 uno_destructData( pUnoReturn, pReturnTypeDescr, nullptr );
             }
             // complex return ptr is set to return reg
-            *reinterpret_cast<void **>(pRegisterReturn) = pCppReturn;
+            *pRegisterReturn = reinterpret_cast<sal_uIntPtr>( pCppReturn );
         }
         if ( pReturnTypeDescr )
         {
@@ -249,7 +249,7 @@
 
 typelib_TypeClass cpp_vtable_call(
     sal_Int32 nFunctionIndex, sal_Int32 nVtableOffset,
-    void ** gpreg, void ** fpreg, void ** ovrflw,
+    x86_64::funArg * gpreg, x86_64::funArg * fpreg, x86_64::funArg * ovrflw,
     sal_uInt64 * pRegisterReturn /* space for register return */ )
 {
     // gpreg:  [ret *], this, [other gpr params]
@@ -356,7 +356,7 @@
                             pInterface->release();
                             TYPELIB_DANGER_RELEASE( pTD );
 
-                            reinterpret_cast<void **>( pRegisterReturn )[0] = gpreg[0];
+                            *pRegisterReturn = gpreg[0];
                             eRet = typelib_TypeClass_ANY;
                             break;
                         }
@@ -388,7 +388,7 @@
     return eRet;
 }
 
-const int codeSnippetSize = 24;
+const int codeSnippetSize = sizeof(void *) == 8 ? 24 : 16;
 
 // Generate a trampoline that redirects method calls to
 // privateSnippetExecutor().
@@ -400,7 +400,11 @@
 // Note: The code snippet we build here must not create a stack frame,
 // otherwise the UNO exceptions stop working thanks to non-existing
 // unwinding info.
+#ifdef __ILP32__
+unsigned char * codeSnippet( unsigned char * code, sal_PtrDiff writetoexecdiff,
+#else
 unsigned char * codeSnippet( unsigned char * code,
+#endif
         sal_Int32 nFunctionIndex, sal_Int32 nVtableOffset,
         bool bHasHiddenParam )
 {
@@ -415,6 +419,13 @@
     *reinterpret_cast<sal_uInt32 *>( code + 4 ) = nOffsetAndIndex >> 16;
     *reinterpret_cast<sal_uInt16 *>( code + 8 ) = nOffsetAndIndex >> 48;
 
+#ifdef __ILP32__
+    // addr32 jmp privateSnippetExecutor(%rip)
+    *reinterpret_cast<sal_uInt16 *>( code + 10 ) = 0xe967;
+    *reinterpret_cast<sal_uInt32 *>( code + 12 )
+        = reinterpret_cast<sal_uInt32>( privateSnippetExecutor )
+        - reinterpret_cast<sal_uInt32>( code ) - 16ul - writetoexecdiff;
+#else
     // movq $<address of the privateSnippetExecutor>, %r11
     *reinterpret_cast<sal_uInt16 *>( code + 10 ) = 0xbb49;
     *reinterpret_cast<sal_uInt32 *>( code + 12 )
@@ -424,6 +435,7 @@
 
     // jmpq *%r11
     *reinterpret_cast<sal_uInt32 *>( code + 20 ) = 0x00e3ff49;
+#endif
 
 #if OSL_DEBUG_LEVEL > 1
     fprintf(stderr,
@@ -486,14 +498,22 @@
 
             // get method
             (s++)->fn = code + writetoexecdiff;
+#ifdef __ILP32__
+            code = codeSnippet( code, writetoexecdiff, nFunctionOffset++, nVtableOffset,
+#else
             code = codeSnippet( code, nFunctionOffset++, nVtableOffset,
+#endif
                                 x86_64::return_in_hidden_param( pAttrTD->pAttributeTypeRef ) );
 
             if ( ! pAttrTD->bReadOnly )
             {
                 // set method
                 (s++)->fn = code + writetoexecdiff;
+#ifdef __ILP32__
+                code = codeSnippet( code, writetoexecdiff, nFunctionOffset++, nVtableOffset, false );
+#else
                 code = codeSnippet( code, nFunctionOffset++, nVtableOffset, false );
+#endif
             }
         }
         else if ( pTD->eTypeClass == typelib_TypeClass_INTERFACE_METHOD )
@@ -502,7 +522,11 @@
                 reinterpret_cast<typelib_InterfaceMethodTypeDescription *>( pTD );
 
             (s++)->fn = code + writetoexecdiff;
+#ifdef __ILP32__
+            code = codeSnippet( code, writetoexecdiff, nFunctionOffset++, nVtableOffset,
+#else
             code = codeSnippet( code, nFunctionOffset++, nVtableOffset,
+#endif
                                 x86_64::return_in_hidden_param( pMethodTD->pReturnTypeRef ) );
         }
         else
--- a/bridges/source/cpp_uno/gcc3_linux_x86-64/uno2cpp.cxx
+++ b/bridges/source/cpp_uno/gcc3_linux_x86-64/uno2cpp.cxx
@@ -68,6 +68,15 @@
         *pDS++ = *static_cast<sal_uInt64 const *>( pSV );
 }
 
+void INSERT_PTR(
+    void const * pSV, sal_uInt32 & nr, sal_uInt64 * pGPR, sal_uInt64 *& pDS)
+{
+    if ( nr < x86_64::MAX_GPR_REGS )
+        pGPR[nr++] = *static_cast<sal_uIntPtr const *>( pSV );
+    else
+        *pDS++ = *static_cast<sal_uIntPtr const *>( pSV );
+}
+
 void INSERT_INT32(
     void const * pSV, sal_uInt32 & nr, sal_uInt64 * pGPR, sal_uInt64 *& pDS)
 {
@@ -135,13 +144,13 @@
             // complex return via ptr
             pCppReturn = bridges::cpp_uno::shared::relatesToInterfaceType( pReturnTypeDescr )?
                          __builtin_alloca( pReturnTypeDescr->nSize ) : pUnoReturn;
-            INSERT_INT64( &pCppReturn, nGPR, pGPR, pStack );
+            INSERT_PTR( &pCppReturn, nGPR, pGPR, pStack );
         }
     }
 
     // Push "this" pointer
     void * pAdjustedThisPtr = reinterpret_cast< void ** >( pThis->getCppI() ) + aVtableSlot.offset;
-    INSERT_INT64( &pAdjustedThisPtr, nGPR, pGPR, pStack );
+    INSERT_PTR( &pAdjustedThisPtr, nGPR, pGPR, pStack );
 
     // Args
     void ** pCppArgs = static_cast<void **>(alloca( 3 * sizeof(void *) * nParams ));
@@ -223,7 +232,7 @@
                 // no longer needed
                 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
             }
-            INSERT_INT64( &(pCppArgs[nPos]), nGPR, pGPR, pStack );
+            INSERT_PTR( &(pCppArgs[nPos]), nGPR, pGPR, pStack );
         }
     }