add headers and implementation for <new>, <exception>, and <typeinfo>
llvm-svn: 103795
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 111e0cbe5159e1bb23c3beb60e959b656b509eab
diff --git a/src/exception.cpp b/src/exception.cpp
new file mode 100644
index 0000000..336527d
--- /dev/null
+++ b/src/exception.cpp
@@ -0,0 +1,171 @@
+//===------------------------ exception.cpp -------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+#include <stdlib.h>
+
+#include "exception"
+
+#if __APPLE__
+ #include <cxxabi.h>
+ using namespace __cxxabiv1;
+ // On Darwin, there are two STL shared libraries and a lower level ABI
+ // shared libray. The globals holding the current terminate handler and
+ // current unexpected handler are in the ABI library.
+ #define __terminate_handler __cxxabiapple::__cxa_terminate_handler
+ #define __unexpected_handler __cxxabiapple::__cxa_unexpected_handler
+#else
+ static std::terminate_handler __terminate_handler;
+ static std::unexpected_handler __unexpected_handler;
+#endif
+
+
+
+std::unexpected_handler
+std::set_unexpected(std::unexpected_handler func) throw()
+{
+ std::terminate_handler old = __unexpected_handler;
+ __unexpected_handler = func;
+ return old;
+}
+
+void
+std::unexpected()
+{
+ (*__unexpected_handler)();
+ // unexpected handler should not return
+ std::terminate();
+}
+
+
+std::terminate_handler
+std::set_terminate(std::terminate_handler func) throw()
+{
+ std::terminate_handler old = __terminate_handler;
+ __terminate_handler = func;
+ return old;
+}
+
+
+void
+std::terminate()
+{
+ try {
+ (*__terminate_handler)();
+ // handler should not return
+ ::abort ();
+ }
+ catch (...) {
+ // handler should not throw exception
+ ::abort ();
+ }
+}
+
+
+bool std::uncaught_exception() throw()
+{
+#if __APPLE__
+ // on Darwin, there is a helper function so __cxa_get_globals is private
+ return __cxxabiapple::__cxa_uncaught_exception();
+#else
+ __cxa_eh_globals * globals = __cxa_get_globals();
+ return (globals->uncaughtExceptions != 0);
+#endif
+}
+
+
+namespace std
+{
+
+
+exception::~exception() throw()
+{
+}
+
+bad_exception::~bad_exception() throw()
+{
+}
+
+const char* exception::what() const throw()
+{
+ return "std::exception";
+}
+
+const char* bad_exception::what() const throw()
+{
+ return "std::bad_exception";
+}
+
+
+
+exception_ptr::~exception_ptr()
+{
+#if __APPLE__
+ __cxxabiapple::__cxa_decrement_exception_refcount(__ptr_);
+#else
+ #warning exception_ptr not yet implemented
+ ::abort();
+#endif
+}
+
+exception_ptr::exception_ptr(const exception_ptr& other)
+ : __ptr_(other.__ptr_)
+{
+#if __APPLE__
+ __cxxabiapple::__cxa_increment_exception_refcount(__ptr_);
+#else
+ #warning exception_ptr not yet implemented
+ ::abort();
+#endif
+}
+
+exception_ptr& exception_ptr::operator=(const exception_ptr& other)
+{
+#if __APPLE__
+ if (__ptr_ != other.__ptr_)
+ {
+ __cxxabiapple::__cxa_increment_exception_refcount(other.__ptr_);
+ __cxxabiapple::__cxa_decrement_exception_refcount(__ptr_);
+ __ptr_ = other.__ptr_;
+ }
+ return *this;
+#else
+ #warning exception_ptr not yet implemented
+ ::abort();
+#endif
+}
+
+} // std
+
+
+std::exception_ptr std::current_exception()
+{
+#if __APPLE__
+ // be nicer if there was a constructor that took a ptr, then
+ // this whole function would be just:
+ // return exception_ptr(__cxa_current_primary_exception());
+ std::exception_ptr ptr;
+ ptr.__ptr_ = __cxxabiapple::__cxa_current_primary_exception();
+ return ptr;
+#else
+ #warning exception_ptr not yet implemented
+ ::abort();
+#endif
+}
+
+void std::rethrow_exception(exception_ptr p)
+{
+#if __APPLE__
+ __cxxabiapple::__cxa_rethrow_primary_exception(p.__ptr_);
+ // if p.__ptr_ is NULL, above returns so we terminate
+ terminate();
+#else
+ #warning exception_ptr not yet implemented
+ ::abort();
+#endif
+}
+
diff --git a/src/new.cpp b/src/new.cpp
index 32e0cbd..bc105cc 100644
--- a/src/new.cpp
+++ b/src/new.cpp
@@ -7,11 +7,136 @@
//
//===----------------------------------------------------------------------===//
+#include <stdlib.h>
+#include <cxxabi.h>
+
#include "new"
+
+#if __APPLE__
+ // On Darwin, there are two STL shared libraries and a lower level ABI
+ // shared libray. The global holding the current new handler is
+ // in the ABI library and named __cxa_new_handler.
+ #define __new_handler __cxxabiapple::__cxa_new_handler
+#else
+ static std::new_handler __new_handler;
+#endif
+
+
+// Implement all new and delete operators as weak definitions
+// in this shared library, so that they can be overriden by programs
+// that define non-weak copies of the functions.
+
+
+__attribute__((__weak__, __visibility__("default")))
+void *
+operator new(std::size_t size) throw (std::bad_alloc)
+{
+ if (size == 0)
+ size = 1;
+ void* p;
+ while ((p = ::malloc(size)) == 0)
+ {
+ // If malloc fails and there is a new_handler,
+ // call it to try free up memory.
+ if (__new_handler)
+ __new_handler();
+ else
+ throw std::bad_alloc();
+ }
+ return p;
+}
+
+__attribute__((__weak__, __visibility__("default")))
+void*
+operator new(size_t size, const std::nothrow_t&) throw()
+{
+ void* p = 0;
+ try
+ {
+ p = ::operator new(size);
+ }
+ catch (...)
+ {
+ }
+ return p;
+}
+
+__attribute__((__weak__, __visibility__("default")))
+void*
+operator new[](size_t size) throw (std::bad_alloc)
+{
+ return ::operator new(size);
+}
+
+__attribute__((__weak__, __visibility__("default")))
+void*
+operator new[](size_t size, const std::nothrow_t& nothrow) throw()
+{
+ void* p = 0;
+ try
+ {
+ p = ::operator new[](size);
+ }
+ catch (...)
+ {
+ }
+ return p;
+}
+
+__attribute__((__weak__, __visibility__("default")))
+void
+operator delete(void* ptr) throw ()
+{
+ if (ptr)
+ ::free(ptr);
+}
+
+__attribute__((__weak__, __visibility__("default")))
+void
+operator delete(void* ptr, const std::nothrow_t&) throw ()
+{
+ ::operator delete(ptr);
+}
+
+
+__attribute__((__weak__, __visibility__("default")))
+void
+operator delete[] (void* ptr) throw ()
+{
+ ::operator delete (ptr);
+}
+
+__attribute__((__weak__, __visibility__("default")))
+void
+operator delete[] (void* ptr, const std::nothrow_t&) throw ()
+{
+ ::operator delete[](ptr);
+}
+
+
namespace std
{
+bad_alloc::bad_alloc() throw()
+{
+}
+
+bad_alloc::~bad_alloc() throw()
+{
+}
+
+const char*
+bad_alloc::what() const throw()
+{
+ return "std::bad_alloc";
+}
+
+
+bad_array_new_length::bad_array_new_length() throw()
+{
+}
+
bad_array_new_length::~bad_array_new_length() throw()
{
}
@@ -22,6 +147,8 @@
return "bad_array_new_length";
}
+
+
void
__throw_bad_alloc()
{
diff --git a/src/typeinfo.cpp b/src/typeinfo.cpp
new file mode 100644
index 0000000..8606897
--- /dev/null
+++ b/src/typeinfo.cpp
@@ -0,0 +1,41 @@
+//===------------------------- typeinfo.cpp -------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+#include <stdlib.h>
+
+#include "typeinfo"
+
+std::bad_cast::bad_cast() throw()
+{
+}
+
+std::bad_cast::~bad_cast() throw()
+{
+}
+
+const char*
+std::bad_cast::what() const throw()
+{
+ return "std::bad_cast";
+}
+
+
+std::bad_typeid::bad_typeid() throw()
+{
+}
+
+std::bad_typeid::~bad_typeid() throw()
+{
+}
+
+const char*
+std::bad_typeid::what() const throw()
+{
+ return "std::bad_typeid";
+}
+