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https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
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[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc4/] [gcc/] [config/] [darwin-crt2.c] - Rev 282
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/* KeyMgr backwards-compatibility support for Darwin. Copyright (C) 2001, 2002, 2004, 2009 Free Software Foundation, Inc. This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. Under Section 7 of GPL version 3, you are granted additional permissions described in the GCC Runtime Library Exception, version 3.1, as published by the Free Software Foundation. You should have received a copy of the GNU General Public License and a copy of the GCC Runtime Library Exception along with this program; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see <http://www.gnu.org/licenses/>. */ /* It is incorrect to include config.h here, because this file is being compiled for the target, and hence definitions concerning only the host do not apply. */ #include "tconfig.h" #include "tsystem.h" /* This file doesn't do anything useful on non-powerpc targets, since they don't have backwards compatibility anyway. */ #ifdef __ppc__ /* Homemade decls substituting for getsect.h and dyld.h, so cross compilation works. */ struct mach_header; extern char *getsectdatafromheader (struct mach_header *, const char *, const char *, unsigned long *); extern void _dyld_register_func_for_add_image (void (*) (struct mach_header *, unsigned long)); extern void _dyld_register_func_for_remove_image (void (*) (struct mach_header *, unsigned long)); extern void __darwin_gcc3_preregister_frame_info (void); /* These are from "keymgr.h". */ extern void _init_keymgr (void); extern void *_keymgr_get_and_lock_processwide_ptr (unsigned key); extern void _keymgr_set_and_unlock_processwide_ptr (unsigned key, void *ptr); extern void *__keymgr_global[]; typedef struct _Sinfo_Node { unsigned int size ; /*size of this node*/ unsigned short major_version ; /*API major version.*/ unsigned short minor_version ; /*API minor version.*/ } _Tinfo_Node ; /* KeyMgr 3.x is the first one supporting GCC3 stuff natively. */ #define KEYMGR_API_MAJOR_GCC3 3 /* ... with these keys. */ #define KEYMGR_GCC3_LIVE_IMAGE_LIST 301 /* loaded images */ #define KEYMGR_GCC3_DW2_OBJ_LIST 302 /* Dwarf2 object list */ /* Node of KEYMGR_GCC3_LIVE_IMAGE_LIST. Info about each resident image. */ struct live_images { unsigned long this_size; /* sizeof (live_images) */ struct mach_header *mh; /* the image info */ unsigned long vm_slide; void (*destructor)(struct live_images *); /* destructor for this */ struct live_images *next; unsigned int examined_p; void *fde; void *object_info; unsigned long info[2]; /* Future use. */ }; /* These routines are used only on Darwin versions before 10.2. Later versions have equivalent code in the system. Eventually, they might go away, although it might be a long time... */ static void darwin_unwind_dyld_remove_image_hook (struct mach_header *m, unsigned long s); static void darwin_unwind_dyld_remove_image_hook (struct mach_header *m, unsigned long s); extern void __darwin_gcc3_preregister_frame_info (void); static void darwin_unwind_dyld_add_image_hook (struct mach_header *mh, unsigned long slide) { struct live_images *l = (struct live_images *)calloc (1, sizeof (*l)); l->mh = mh; l->vm_slide = slide; l->this_size = sizeof (*l); l->next = (struct live_images *) _keymgr_get_and_lock_processwide_ptr (KEYMGR_GCC3_LIVE_IMAGE_LIST); _keymgr_set_and_unlock_processwide_ptr (KEYMGR_GCC3_LIVE_IMAGE_LIST, l); } static void darwin_unwind_dyld_remove_image_hook (struct mach_header *m, unsigned long s) { struct live_images *top, **lip, *destroy = NULL; /* Look for it in the list of live images and delete it. */ top = (struct live_images *) _keymgr_get_and_lock_processwide_ptr (KEYMGR_GCC3_LIVE_IMAGE_LIST); for (lip = ⊤ *lip != NULL; lip = &(*lip)->next) { if ((*lip)->mh == m && (*lip)->vm_slide == s) { destroy = *lip; *lip = destroy->next; /* unlink DESTROY */ if (destroy->this_size != sizeof (*destroy)) /* sanity check */ abort (); break; } } _keymgr_set_and_unlock_processwide_ptr (KEYMGR_GCC3_LIVE_IMAGE_LIST, top); /* Now that we have unlinked this from the image list, toss it. */ if (destroy != NULL) { if (destroy->destructor != NULL) (*destroy->destructor) (destroy); free (destroy); } } void __darwin_gcc3_preregister_frame_info (void) { const _Tinfo_Node *info; _init_keymgr (); info = (_Tinfo_Node *)__keymgr_global[2]; if (info != NULL) { if (info->major_version >= KEYMGR_API_MAJOR_GCC3) return; /* Otherwise, use our own add_image_hooks. */ } _dyld_register_func_for_add_image (darwin_unwind_dyld_add_image_hook); _dyld_register_func_for_remove_image (darwin_unwind_dyld_remove_image_hook); } #endif /* __ppc__ */
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