318 lines
5.8 KiB
C++
318 lines
5.8 KiB
C++
/*
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* \brief Dummy functions to make the damn thing link
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* \author Norman Feske
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* \date 2006-04-07
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*/
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/*
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* Copyright (C) 2006-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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/* libsupc++ includes */
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#include <cxxabi.h>
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#include <exception>
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#include <typeinfo>
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/* Genode includes */
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#include <base/env.h>
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#include <base/log.h>
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#include <base/sleep.h>
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#include <base/stdint.h>
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#include <base/thread.h>
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#include <util/string.h>
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/* base-internal includes */
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#include <base/internal/globals.h>
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extern "C" void __cxa_pure_virtual()
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{
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Genode::error(__func__, " called, return addr is ", __builtin_return_address(0));
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std::terminate();
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}
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extern "C" void __pure_virtual()
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{
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Genode::error(__func__, " called, return addr is ", __builtin_return_address(0));
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std::terminate();
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}
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/**
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* Prototype for exit-handler support function provided by '_main.cc'
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*/
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extern int genode___cxa_atexit(void(*func)(void*), void *arg,
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void *dso_handle);
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extern "C" int __cxa_atexit(void(*func)(void*), void *arg,
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void *dso_handle)
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{
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return genode___cxa_atexit(func, arg, dso_handle);
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}
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/**
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* Prototype for finalize support function provided by '_main.cc'
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*/
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extern int genode___cxa_finalize(void *dso);
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extern "C" int __cxa_finalize(void *dso)
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{
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return genode___cxa_finalize(dso);
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}
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/***********************************
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** Support required for ARM EABI **
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***********************************/
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extern "C" int __aeabi_atexit(void *arg, void(*func)(void*),
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void *dso_handle)
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{
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return genode___cxa_atexit(func, arg, dso_handle);
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}
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extern "C" __attribute__((weak))
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void *__tls_get_addr()
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{
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static long dummy_tls;
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return &dummy_tls;
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}
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/**
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* Not needed for exception-handling init on ARM EABI,
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* but called from 'init_exception'
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*/
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extern "C" __attribute__((weak))
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void __register_frame(void *) { }
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/**
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* Needed to build for OKL4-gta01 with ARM EABI
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*/
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extern "C" __attribute__((weak)) void raise()
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{
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Genode::warning("cxx: raise called - not implemented");
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}
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/***************************
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** Support for libsupc++ **
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***************************/
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extern "C" void abort(void)
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{
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Genode::Thread const * const myself = Genode::Thread::myself();
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Genode::Thread::Name name = "unknown";
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if (myself)
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name = myself->name();
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Genode::warning("abort called - thread: ", name.string());
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/* Notify the parent of failure */
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if (name != "main")
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genode_exit(1);
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Genode::sleep_forever();
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}
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extern "C" int fflush(void*) {
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return 0;
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}
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extern "C" int fprintf(void*, const char *msg, ...) {
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Genode::warning("C++ runtime: ", msg);
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return 0;
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}
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extern "C" int fputc(int, void*) {
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return 0;
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}
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extern "C" int fputs(const char *s, void *) {
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Genode::warning("C++ runtime: ", s);
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return 0;
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}
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extern "C" size_t fwrite(const void*, size_t, size_t, void*) {
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return 0;
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}
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extern "C" int memcmp(const void *p0, const void *p1, size_t size)
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{
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return Genode::memcmp(p0, p1, size);
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}
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extern "C" __attribute__((weak))
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void *memcpy(void *dst, const void *src, size_t n)
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{
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return Genode::memcpy(dst, src, n);
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}
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extern "C" __attribute__((weak))
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void *memmove(void *dst, const void *src, size_t n)
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{
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return Genode::memmove(dst, src, n);
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}
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extern "C" __attribute__((weak))
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void *memset(void *s, int c, size_t n)
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{
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while (n--) ((char *)s)[n] = c;
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return s;
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}
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extern "C" void *stderr(void) {
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Genode::warning("stderr - not yet implemented");
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return 0;
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}
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/*
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* Used when having compiled libsupc++ with the FreeBSD libc
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*/
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struct FILE;
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FILE *__stderrp;
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extern "C" char *strcat(char *, const char *)
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{
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Genode::warning("strcat - not yet implemented");
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return 0;
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}
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extern "C" int strncmp(const char *s1, const char *s2, size_t n)
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{
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return Genode::strcmp(s1, s2, n);
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}
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extern "C" char *strcpy(char *dest, const char *src)
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{
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return Genode::strncpy(dest, src, ~0UL);
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}
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extern "C" size_t strlen(const char *s)
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{
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return Genode::strlen(s);
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}
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extern "C" int strcmp(const char *s1, const char *s2)
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{
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return Genode::strcmp(s1, s2);
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}
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extern "C" char *getenv(const char *)
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{
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return NULL;
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}
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/*
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* Needed by ARM EABI (gcc-4.4 Codesourcery release1039)
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*/
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extern "C" int sprintf(char *, const char *, ...)
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{
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Genode::warning("sprintf - not implemented");
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return 0;
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}
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/*
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* Needed by Clang/Libunwind/Libc++abi
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*/
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extern "C" {
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void __assert(const char *, const char *, int, const char *) {
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std::terminate();
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}
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int tolower(int c) { return c; }
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int isdigit(int) { return 0; }
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int isxdigit(int) { return 0; }
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int islower(int) { return 0; }
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int snprintf(char *, size_t, const char *, ...) { return 0; }
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int vfprintf(FILE *, const char *msg, va_list)
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{
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Genode::warning("C++ runtime: ", msg);
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return 0;
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}
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struct Dl_info;
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int dladdr(const void *, Dl_info *) { return 0; }
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struct pthread_rwlock_t;
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int pthread_rwlock_rdlock(pthread_rwlock_t *) { return 0; }
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int pthread_rwlock_unlock(pthread_rwlock_t *) { return 0; }
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int pthread_rwlock_wrlock(pthread_rwlock_t *) { return 0; }
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}
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/**********************************
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** Support for stack protection **
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**********************************/
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extern "C" __attribute__((weak)) void __stack_chk_fail_local(void)
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{
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Genode::error("Violated stack boundary");
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}
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/*******************************
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** Demangling of C++ symbols **
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*******************************/
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extern "C" void free(void *);
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void Genode::cxx_demangle(char const *symbol, char *out, size_t size)
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{
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char *demangled_name = __cxxabiv1::__cxa_demangle(symbol, nullptr, nullptr, nullptr);
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if (demangled_name) {
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Genode::strncpy(out, demangled_name, size);
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free(demangled_name);
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} else {
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Genode::strncpy(out, symbol, size);
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}
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}
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void Genode::cxx_current_exception(char *out, size_t size)
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{
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std::type_info *t = __cxxabiv1::__cxa_current_exception_type();
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if (!t)
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return;
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cxx_demangle(t->name(), out, size);
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}
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