mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-24 07:31:32 +00:00
81 lines
2.6 KiB
C++
81 lines
2.6 KiB
C++
/* darwin.cc - class loader stuff for Darwin. */
|
|
|
|
/* Copyright (C) 2004, 2007 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 <jvm.h>
|
|
|
|
/* In theory, we should be able to do:
|
|
#include <mach-o/getsect.h>
|
|
#include <mach-o/dyld.h>
|
|
|
|
but all the types in these headers changed between Panther and Tiger,
|
|
so the only way to be avoid type mismatches is to declare the routines
|
|
ourself. */
|
|
|
|
#include <stdint.h>
|
|
#if !defined (__LP64__)
|
|
struct mach_header;
|
|
# define JAVA_MACH_HEADER mach_header
|
|
# define mh_size_t uint32_t
|
|
extern "C" void _dyld_register_func_for_add_image
|
|
(void (*func)(const struct mach_header *mh, intptr_t vmaddr_slide));
|
|
extern "C" void _dyld_register_func_for_remove_image
|
|
(void (*func)(const struct mach_header *mh, intptr_t vmaddr_slide));
|
|
extern "C" char *getsectdatafromheader
|
|
(const struct mach_header *mhp, const char *segname, const char *sectname,
|
|
uint32_t *size);
|
|
# define GETSECTDATA getsectdatafromheader
|
|
#else
|
|
struct mach_header_64;
|
|
# define JAVA_MACH_HEADER mach_header_64
|
|
# define mh_size_t uint64_t
|
|
extern "C" void _dyld_register_func_for_add_image
|
|
(void (*func)(const struct mach_header_64 *mh, intptr_t vmaddr_slide));
|
|
extern "C" void _dyld_register_func_for_remove_image
|
|
(void (*func)(const struct mach_header_64 *mh, intptr_t vmaddr_slide));
|
|
extern "C" char *getsectdatafromheader_64
|
|
(const struct mach_header_64 *mhp, const char *segname,
|
|
const char *sectname, uint64_t *size);
|
|
# define GETSECTDATA getsectdatafromheader_64
|
|
#endif
|
|
|
|
/* When a new image is loaded, look to see if it has a jcr section
|
|
and if so register the classes listed in it. */
|
|
|
|
static void
|
|
darwin_java_register_dyld_add_image_hook (const struct JAVA_MACH_HEADER *mh,
|
|
intptr_t slide)
|
|
{
|
|
char *fde;
|
|
mh_size_t sz;
|
|
|
|
fde = GETSECTDATA (mh, "__DATA", "jcr", &sz);
|
|
if (! fde)
|
|
return;
|
|
|
|
/* As far as I can tell, you're only supposed to load shared
|
|
libraries while having a lock on java.lang.Class. So there's
|
|
no need to synchronize on anything here. (I'm not sure how exactly
|
|
you can ensure this given lazy library loading. FIXME.) */
|
|
|
|
_Jv_RegisterClasses_Counted ((const jclass *) (fde + slide),
|
|
sz / sizeof (jclass *));
|
|
}
|
|
|
|
static struct darwin_constructor_s{
|
|
darwin_constructor_s()
|
|
{
|
|
_dyld_register_func_for_add_image
|
|
(darwin_java_register_dyld_add_image_hook);
|
|
/* At present, you mustn't unload any java plugin. */
|
|
};
|
|
} darwin_constructor;
|