OVMS3-idf/components/cxx/cxx_exception_stubs.cpp
Amey Inamdar 78ed138453 cxx_exceptions: Add missing stubs for cxx exceptions with exceptions
disabled

The misssing stubs get pulled in from the toolchain's libstdc++ also
causing to pull in defined stubs. This results in redefinition of
symbols. Fixing it by simply adding the missing stubs when exceptions
are disabled.

Signed-off-by: Amey Inamdar <amey.inamdar@gmail.com>
2017-11-21 12:41:49 +05:30

89 lines
3.7 KiB
C++

#include <cstdlib>
#include <cstdio>
#include <exception>
#include <bits/functexcept.h>
#include <sdkconfig.h>
#ifndef CONFIG_CXX_EXCEPTIONS
const char *FATAL_EXCEPTION = "Fatal C++ exception: ";
extern "C" void __cxx_fatal_exception(void)
{
abort();
}
extern "C" void __cxx_fatal_exception_message(const char *msg)
{
printf("%s%s\n", FATAL_EXCEPTION, msg);
abort();
}
extern "C" void __cxx_fatal_exception_int(int i)
{
printf("%s (%d)\n", FATAL_EXCEPTION, i);
abort();
}
void std::__throw_bad_exception(void) __attribute__((alias("__cxx_fatal_exception")));
void std::__throw_bad_alloc(void) __attribute__((alias("__cxx_fatal_exception")));
void std::__throw_bad_cast(void) __attribute__((alias("__cxx_fatal_exception")));
void std::__throw_bad_typeid(void) __attribute__((alias("__cxx_fatal_exception")));
void std::__throw_logic_error(const char*) __attribute__((alias("__cxx_fatal_exception_message")));
void std::__throw_domain_error(const char*) __attribute__((alias("__cxx_fatal_exception_message")));
void std::__throw_invalid_argument(const char*) __attribute__((alias("__cxx_fatal_exception_message")));
void std::__throw_length_error(const char*) __attribute__((alias("__cxx_fatal_exception_message")));
void std::__throw_out_of_range(const char*) __attribute__((alias("__cxx_fatal_exception_message")));
void std::__throw_out_of_range_fmt(const char*, ...) __attribute__((alias("__cxx_fatal_exception_message")));
void std::__throw_runtime_error(const char*) __attribute__((alias("__cxx_fatal_exception_message")));
void std::__throw_range_error(const char*) __attribute__((alias("__cxx_fatal_exception_message")));
void std::__throw_overflow_error(const char*) __attribute__((alias("__cxx_fatal_exception_message")));
void std::__throw_underflow_error(const char*) __attribute__((alias("__cxx_fatal_exception_message")));
void std::__throw_ios_failure(const char*) __attribute__((alias("__cxx_fatal_exception_message")));
void std::__throw_system_error(int) __attribute__((alias("__cxx_fatal_exception_int")));
void std::__throw_bad_function_call(void) __attribute__((alias("__cxx_fatal_exception")));
void std::__throw_future_error(int) __attribute__((alias("__cxx_fatal_exception_int")));
/* The following definitions are needed because libstdc++ is also compiled with
__throw_exception_again defined to throw, and some other exception code in a few places.
This cause exception handler code to be emitted in the library even though it's mostly
unreachable (as any libstdc++ "throw" will first call one of the above stubs, which will abort).
If these are left out, a bunch of unwanted exception handler code is linked.
Note: these function prototypes are not correct.
*/
extern "C" void __cxa_allocate_exception(void) __attribute__((alias("__cxx_fatal_exception")));
extern "C" void __cxa_allocate_dependent_exception(void) __attribute__((alias("__cxx_fatal_exception")));
extern "C" void __cxa_begin_catch(void) __attribute__((alias("__cxx_fatal_exception")));
extern "C" void __cxa_end_catch(void) __attribute__((alias("__cxx_fatal_exception")));
extern "C" void __cxa_get_exception_ptr(void) __attribute__((alias("__cxx_fatal_exception")));
extern "C" void __cxa_free_exception(void) __attribute__((alias("__cxx_fatal_exception")));
extern "C" void __cxa_free_dependent_exception(void) __attribute__((alias("__cxx_fatal_exception")));
extern "C" void __cxa_rethrow(void) __attribute__((alias("__cxx_fatal_exception")));
extern "C" void __cxa_throw(void) __attribute__((alias("__cxx_fatal_exception")));
extern "C" void __cxa_call_terminate(void) __attribute__((alias("__cxx_fatal_exception")));
bool std::uncaught_exception() __attribute__((alias("__cxx_fatal_exception")));
#endif // CONFIG_CXX_EXCEPTIONS