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Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/unwind-dw2-fde.h')
| -rw-r--r-- | gcc-4.2.1-5666.3/gcc/unwind-dw2-fde.h | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/unwind-dw2-fde.h b/gcc-4.2.1-5666.3/gcc/unwind-dw2-fde.h deleted file mode 100644 index 4f8641bf9..000000000 --- a/gcc-4.2.1-5666.3/gcc/unwind-dw2-fde.h +++ /dev/null @@ -1,188 +0,0 @@ -/* Subroutines needed for unwinding stack frames for exception handling. */ -/* Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2004 - Free Software Foundation, Inc. - Contributed by Jason Merrill <jason@cygnus.com>. - -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 2, or (at your option) any later -version. - -In addition to the permissions in the GNU General Public License, the -Free Software Foundation gives you unlimited permission to link the -compiled version of this file into combinations with other programs, -and to distribute those combinations without any restriction coming -from the use of this file. (The General Public License restrictions -do apply in other respects; for example, they cover modification of -the file, and distribution when not linked into a combine -executable.) - -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. - -You should have received a copy of the GNU General Public License -along with GCC; see the file COPYING. If not, write to the Free -Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301, USA. */ - -#ifndef GCC_UNWIND_DW2_FDE_H -#define GCC_UNWIND_DW2_FDE_H - -#ifndef HIDE_EXPORTS -#pragma GCC visibility push(default) -#endif - -struct fde_vector -{ - const void *orig_data; - size_t count; - const struct dwarf_fde *array[]; -}; - -struct object -{ - void *pc_begin; - void *tbase; - void *dbase; - union { - const struct dwarf_fde *single; - struct dwarf_fde **array; - struct fde_vector *sort; - } u; - - union { - struct { - unsigned long sorted : 1; - unsigned long from_array : 1; - unsigned long mixed_encoding : 1; - unsigned long encoding : 8; - /* ??? Wish there was an easy way to detect a 64-bit host here; - we've got 32 bits left to play with... */ - unsigned long count : 21; - } b; - size_t i; - } s; - -#ifdef DWARF2_OBJECT_END_PTR_EXTENSION - char *fde_end; -#endif - - struct object *next; -}; - -/* This is the original definition of struct object. While the struct - itself was opaque to users, they did know how large it was, and - allocate one statically in crtbegin for each DSO. Keep this around - so that we're aware of the static size limitations for the new struct. */ -struct old_object -{ - void *pc_begin; - void *pc_end; - struct dwarf_fde *fde_begin; - struct dwarf_fde **fde_array; - size_t count; - struct old_object *next; -}; - -struct dwarf_eh_bases -{ - void *tbase; - void *dbase; - void *func; -}; - - -extern void __register_frame_info_bases (const void *, struct object *, - void *, void *); -extern void __register_frame_info (const void *, struct object *); -extern void __register_frame (void *); -extern void __register_frame_info_table_bases (void *, struct object *, - void *, void *); -extern void __register_frame_info_table (void *, struct object *); -extern void __register_frame_table (void *); -extern void *__deregister_frame_info (const void *); -extern void *__deregister_frame_info_bases (const void *); -extern void __deregister_frame (void *); - - -typedef int sword __attribute__ ((mode (SI))); -typedef unsigned int uword __attribute__ ((mode (SI))); -typedef unsigned int uaddr __attribute__ ((mode (pointer))); -typedef int saddr __attribute__ ((mode (pointer))); -typedef unsigned char ubyte; - -/* Terminology: - CIE - Common Information Element - FDE - Frame Descriptor Element - - There is one per function, and it describes where the function code - is located, and what the register lifetimes and stack layout are - within the function. - - The data structures are defined in the DWARF specification, although - not in a very readable way (see LITERATURE). - - Every time an exception is thrown, the code needs to locate the FDE - for the current function, and starts to look for exception regions - from that FDE. This works in a two-level search: - a) in a linear search, find the shared image (i.e. DLL) containing - the PC - b) using the FDE table for that shared object, locate the FDE using - binary search (which requires the sorting). */ - -/* The first few fields of a CIE. The CIE_id field is 0 for a CIE, - to distinguish it from a valid FDE. FDEs are aligned to an addressing - unit boundary, but the fields within are unaligned. */ -struct dwarf_cie -{ - uword length; - sword CIE_id; - ubyte version; - unsigned char augmentation[]; -} __attribute__ ((packed, aligned (__alignof__ (void *)))); - -/* The first few fields of an FDE. */ -struct dwarf_fde -{ - uword length; - sword CIE_delta; - unsigned char pc_begin[]; -} __attribute__ ((packed, aligned (__alignof__ (void *)))); - -typedef struct dwarf_fde fde; - -/* Locate the CIE for a given FDE. */ - -static inline const struct dwarf_cie * -get_cie (const struct dwarf_fde *f) -{ - return (void *)&f->CIE_delta - f->CIE_delta; -} - -static inline const fde * -next_fde (const fde *f) -{ - return (const fde *) ((char *) f + f->length + sizeof (f->length)); -} - -extern const fde * _Unwind_Find_FDE (void *, struct dwarf_eh_bases *); - -static inline int -last_fde (struct object *obj __attribute__ ((__unused__)), const fde *f) -{ -#ifdef DWARF2_OBJECT_END_PTR_EXTENSION - return (char *)f == obj->fde_end || f->length == 0; -#else - return f->length == 0; -#endif -} - -#ifndef HIDE_EXPORTS -#pragma GCC visibility pop -#endif - -#endif /* unwind-dw2-fde.h */ |