diff options
Diffstat (limited to 'libjava/exception.cc')
| -rw-r--r-- | libjava/exception.cc | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/libjava/exception.cc b/libjava/exception.cc deleted file mode 100644 index 30ef55c078c..00000000000 --- a/libjava/exception.cc +++ /dev/null @@ -1,196 +0,0 @@ -// Functions for Exception Support for Java. - -/* Copyright (C) 1998, 1999 Free Software Foundation - - This file is part of libgcj. - -This software is copyrighted work licensed under the terms of the -Libgcj License. Please consult the file "LIBGCJ_LICENSE" for -details. */ - -#include <config.h> - -#include "exception" -#include <stddef.h> -#include <stdlib.h> - -#include <java/lang/Class.h> -#include <java/lang/NullPointerException.h> -#include <gcj/cni.h> -#include <jvm.h> - -// eh-common.h needs gansidecl.h. -#include "gansidecl.h" -#include "eh-common.h" - -typedef struct { - __eh_info eh_info; - void *value; -} java_eh_info; - - -/* Language-specific EH info pointer, throw routine, and language/version - info routines. All defined in libgcc2. */ - -extern "C" java_eh_info **__get_eh_info (); -extern "C" void __throw () __attribute__ ((__noreturn__)); -extern "C" void __sjthrow () __attribute__ ((__noreturn__)); -extern "C" short __get_eh_table_version (void *table); -extern "C" short __get_eh_table_language (void *table); -extern "C" void *__get_eh_context (); - -extern "C" void * -_Jv_type_matcher (java_eh_info *info, void* match_info, - void *exception_table) -{ -#ifndef SJLJ_EXCEPTIONS - /* No exception table implies the old style mechanism, so don't check. */ - if (exception_table != NULL - && __get_eh_table_language (exception_table) != EH_LANG_Java) - return NULL; -#endif - - /* we don't worry about version info yet, there is only one version! */ - - if (match_info != NULL) - { - // The match_info is either a (java::lang::Class*) or - // match_info is one more than a (Utf8Const*). - if (sizeof(void*) != sizeof(size_t)) - abort(); - size_t mi = (size_t) match_info; - if ((mi & 1) != 0) - match_info = _Jv_FindClass ((Utf8Const*) (mi - 1), NULL); - if (! _Jv_IsInstanceOf ((jobject) info->value, (jclass) match_info)) - return NULL; - } - - return info->value; -} - -/* Compiler hook to return a pointer to java exception object. The value - is cleared, so if the exception needs to be rethrown, it should be set - again */ - -extern "C" void * -_Jv_exception_info (void) -{ - java_eh_info *info = *(__get_eh_info ()); - void *ptr; - - if (info == NULL) - abort (); - - ptr = info->value; - - /* clear the value so another throw is an error */ - info->value = NULL; - - return ptr; -} - - - -/* Allocate an exception info structure for java. Called the first time - an exception is thrown. */ - -extern "C" void -_Jv_eh_alloc () -{ - /* FIXME: we should use _Jv_AllocBytes here. However, libgcc2 - apparently can sometimes free() this value itself. */ - java_eh_info *p = (java_eh_info *) malloc (sizeof (java_eh_info)); - if (p == 0) - terminate (); - - p->value = 0; - java_eh_info ** info_ptr = __get_eh_info (); - - /* There should NOT be an exception info pointer already. */ - if (*info_ptr != NULL) - abort (); - - *info_ptr = p; -} - -/* Deallocate the current exception info structure. Called at shutdown time. */ - -extern "C" void -_Jv_eh_free () -{ - java_eh_info ** info_ptr = __get_eh_info (); - if (*info_ptr == NULL) - abort (); - - /* FIXME: ideally we should just let the GC handle this. */ - free (*info_ptr); - *info_ptr = NULL; -} - -/* Initialize an __eh_info structure with this libraries matching info. */ - -extern "C" void -_Jv_setup_eh_info (__eh_info *) -{ -} - -/* Perform a throw, Java style. Throw will unwind through this call, - so there better not be any handlers or exception thrown here. */ - -extern "C" void -_Jv_Throw (void *value) -{ - if (value == NULL) - value = (void *) new java::lang::NullPointerException (); - java_eh_info *ehinfo = *(__get_eh_info ()); - if (ehinfo == NULL) - { - _Jv_eh_alloc (); - ehinfo = *(__get_eh_info ()); - } - ehinfo->eh_info.match_function = (__eh_matcher) _Jv_type_matcher; - ehinfo->eh_info.language = EH_LANG_Java; - ehinfo->eh_info.version = 1; - ehinfo->value = value; - -/* We're happy with setjmp/longjmp exceptions or region-based - exception handlers: entry points are provided here for both. */ -#ifdef SJLJ_EXCEPTIONS - __sjthrow (); -#else - __throw (); -#endif -} - -#ifdef USE_WIN32_SIGNALLING - -// This is a mangled version of _Jv_Throw and __sjthrow except -// rather than calling longjmp, it returns a pointer to the jmp buffer - -extern "C" int * -win32_get_restart_frame (void *value) -{ - struct eh_context *eh = (struct eh_context *)__get_eh_context (); - void ***dhc = &eh->dynamic_handler_chain; - - java_eh_info *ehinfo = *(__get_eh_info ()); - if (ehinfo == NULL) - { - _Jv_eh_alloc (); - ehinfo = *(__get_eh_info ()); - } - ehinfo->eh_info.match_function = (__eh_matcher) _Jv_type_matcher; - ehinfo->eh_info.language = EH_LANG_Java; - ehinfo->eh_info.version = 1; - ehinfo->value = value; - - // FIXME: Run clean ups? - - int *jmpbuf = (int*)&(*dhc)[2]; - - *dhc = (void**)(*dhc)[0]; - - return jmpbuf; -} - -#endif /* USE_WIN32_SIGNALLING */ |