tdf#128671: Rely on unwind.h, declare what's missing from cxxabi.h

...for gcc3_linux_aarch64, similar to what
128deeae81a6f802bfb79b8f0fa8c4b10729f7db "cxxabi.h is not specific to GCC" et al
did for gcc3_linux_x86-64

Change-Id: Iee9980842c0e5f6f49642407339a67e865f8be9c
Reviewed-on: https://gerrit.libreoffice.org/85344
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

3 files changed, 92 insertions, 36 deletions

diff --git a/bridges/source/cpp_uno/gcc3_linux_aarch64/abi.cxx b/bridges/source/cpp_uno/gcc3_linux_aarch64/abi.cxx
index 938011a09a2e..892bf6e81963 100644
--- a/bridges/source/cpp_uno/gcc3_linux_aarch64/abi.cxx
+++ b/bridges/source/cpp_uno/gcc3_linux_aarch64/abi.cxx
@@ -24,7 +24,6 @@
 #include <cstring>
 #include <typeinfo>
 
-#include <cxxabi.h>
 #include <dlfcn.h>
 
 #include <com/sun/star/uno/RuntimeException.hpp>
@@ -135,8 +134,8 @@ std::type_info * getRtti(typelib_TypeDescription const & type) {
 }
 
 extern "C" void _GLIBCXX_CDTOR_CALLABI deleteException(void * exception) {
-    abi_aarch64::__cxa_exception * header =
-        static_cast<abi_aarch64::__cxa_exception *>(exception) - 1;
+    __cxxabiv1::__cxa_exception * header =
+        static_cast<__cxxabiv1::__cxa_exception *>(exception) - 1;
     OUString unoName(toUnoName(header->exceptionType->name()));
     typelib_TypeDescription * td = 0;
     typelib_typedescription_getByName(&td, unoName.pData);
@@ -224,7 +223,7 @@ StructKind getStructKind(typelib_CompoundTypeDescription const * type) {
 namespace abi_aarch64 {
 
 void mapException(
-    __cxa_exception * exception, std::type_info const * type, uno_Any * any, uno_Mapping * mapping)
+    __cxxabiv1::__cxa_exception * exception, std::type_info const * type, uno_Any * any, uno_Mapping * mapping)
 {
     assert(exception != 0);
     assert(type != nullptr);
diff --git a/bridges/source/cpp_uno/gcc3_linux_aarch64/abi.hxx b/bridges/source/cpp_uno/gcc3_linux_aarch64/abi.hxx
index 50c5f1f21a37..e3dc9b5872a7 100644
--- a/bridges/source/cpp_uno/gcc3_linux_aarch64/abi.hxx
+++ b/bridges/source/cpp_uno/gcc3_linux_aarch64/abi.hxx
@@ -22,55 +22,114 @@
 
 #include <sal/config.h>
 
+#include <cstddef>
 #include <exception>
 #include <typeinfo>
 
+#include <cxxabi.h>
+#ifndef _GLIBCXX_CDTOR_CALLABI // new in GCC 4.7 cxxabi.h
+#define _GLIBCXX_CDTOR_CALLABI
+#endif
+#include <unwind.h>
+
+#include <config_cxxabi.h>
 #include <typelib/typedescription.h>
 #include <uno/any2.h>
 #include <uno/mapping.h>
 
-namespace abi_aarch64 {
-
-// Following declarations from libstdc++-v3/libsupc++/unwind-cxx.h and
-// lib/gcc/*-*-*/*/include/unwind.h:
-
-struct _Unwind_Exception
-{
-    unsigned exception_class __attribute__((__mode__(__DI__)));
-    void * exception_cleanup;
-    unsigned private_1 __attribute__((__mode__(__word__)));
-    unsigned private_2 __attribute__((__mode__(__word__)));
-} __attribute__((__aligned__));
+#if !HAVE_CXXABI_H_CLASS_TYPE_INFO
+// <https://mentorembedded.github.io/cxx-abi/abi.html>,
+// libstdc++-v3/libsupc++/cxxabi.h:
+namespace __cxxabiv1 {
+class __class_type_info: public std::type_info {
+public:
+    explicit __class_type_info(char const * n): type_info(n) {}
+    ~__class_type_info() override;
+};
+}
+#endif
 
-struct __cxa_exception
-{
-    std::type_info *exceptionType;
-    void (*exceptionDestructor)(void *);
+#if !HAVE_CXXABI_H_SI_CLASS_TYPE_INFO
+// <https://mentorembedded.github.io/cxx-abi/abi.html>,
+// libstdc++-v3/libsupc++/cxxabi.h:
+namespace __cxxabiv1 {
+class __si_class_type_info: public __class_type_info {
+public:
+    __class_type_info const * __base_type;
+    explicit __si_class_type_info(
+        char const * n, __class_type_info const *base):
+        __class_type_info(n), __base_type(base) {}
+    ~__si_class_type_info() override;
+};
+}
+#endif
 
+#if !HAVE_CXXABI_H_CXA_EXCEPTION
+// <https://mentorembedded.github.io/cxx-abi/abi-eh.html>,
+// libcxxabi/src/cxa_exception.hpp:
+namespace __cxxabiv1 {
+struct __cxa_exception {
+#if defined _LIBCPPABI_VERSION // detect libc++abi
+#if defined __LP64__ || LIBCXXABI_ARM_EHABI
+    std::size_t referenceCount;
+#endif
+#endif
+    std::type_info * exceptionType;
+    void (* exceptionDestructor)(void *);
     void (*unexpectedHandler)(); // std::unexpected_handler dropped from C++17
     std::terminate_handler terminateHandler;
-
-    __cxa_exception *nextException;
-
+    __cxa_exception * nextException;
     int handlerCount;
-
     int handlerSwitchValue;
-    const unsigned char *actionRecord;
-    const unsigned char *languageSpecificData;
-    void *catchTemp;
-    void *adjustedPtr;
-
+    char const * actionRecord;
+    char const * languageSpecificData;
+    void * catchTemp;
+    void * adjustedPtr;
     _Unwind_Exception unwindHeader;
 };
+}
+#endif
 
-struct __cxa_eh_globals
-{
-    __cxa_exception *caughtExceptions;
+#if !HAVE_CXXABI_H_CXA_EH_GLOBALS
+// <https://mentorembedded.github.io/cxx-abi/abi-eh.html>:
+namespace __cxxabiv1 {
+struct __cxa_eh_globals {
+    __cxa_exception * caughtExceptions;
     unsigned int uncaughtExceptions;
 };
+}
+#endif
+
+#if !HAVE_CXXABI_H_CXA_GET_GLOBALS
+namespace __cxxabiv1 {
+extern "C" __cxa_eh_globals * __cxa_get_globals() throw();
+}
+#endif
+
+#if !HAVE_CXXABI_H_CXA_CURRENT_EXCEPTION_TYPE
+namespace __cxxabiv1 {
+extern "C" std::type_info *__cxa_current_exception_type() throw();
+}
+#endif
+
+#if !HAVE_CXXABI_H_CXA_ALLOCATE_EXCEPTION
+namespace __cxxabiv1 {
+extern "C" void * __cxa_allocate_exception(std::size_t thrown_size) throw();
+}
+#endif
+
+#if !HAVE_CXXABI_H_CXA_THROW
+namespace __cxxabiv1 {
+extern "C" void __cxa_throw(
+    void * thrown_exception, void * tinfo, void (* dest)(void *))
+    __attribute__((noreturn));
+}
+#endif
+
+namespace abi_aarch64 {
 
 void mapException(
-    __cxa_exception * exception, std::type_info const * type, uno_Any * any, uno_Mapping * mapping);
+    __cxxabiv1::__cxa_exception * exception, std::type_info const * type, uno_Any * any, uno_Mapping * mapping);
 
 void raiseException(uno_Any * any, uno_Mapping * mapping);
 
diff --git a/bridges/source/cpp_uno/gcc3_linux_aarch64/uno2cpp.cxx b/bridges/source/cpp_uno/gcc3_linux_aarch64/uno2cpp.cxx
index f03d848521cc..0847dfc76db5 100644
--- a/bridges/source/cpp_uno/gcc3_linux_aarch64/uno2cpp.cxx
+++ b/bridges/source/cpp_uno/gcc3_linux_aarch64/uno2cpp.cxx
@@ -24,8 +24,6 @@
 #include <exception>
 #include <typeinfo>
 
-#include <cxxabi.h>
-
 #include <bridge.hxx>
 #include <types.hxx>
 #include <unointerfaceproxy.hxx>
@@ -190,7 +188,7 @@ void call(
         }
     } catch (css::uno::Exception &) {
         abi_aarch64::mapException(
-            reinterpret_cast<abi_aarch64::__cxa_eh_globals *>(
+            reinterpret_cast<__cxxabiv1::__cxa_eh_globals *>(
                 __cxxabiv1::__cxa_get_globals())->caughtExceptions,
             __cxxabiv1::__cxa_current_exception_type(), *exception,
             proxy->getBridge()->getCpp2Uno());