/* dw2gencfi.h - Support for generating Dwarf2 CFI information. Copyright 2003, 2004, 2005, 2007, 2009 Free Software Foundation, Inc. Contributed by Michal Ludvig <mludvig@suse.cz> This file is part of GAS, the GNU Assembler. GAS 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. GAS 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 GAS; see the file COPYING. If not, write to the Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ #ifndef DW2GENCFI_H #define DW2GENCFI_H #include "dwarf2.h" struct symbol; extern const pseudo_typeS cfi_pseudo_table[]; /* cfi_finish() is called at the end of file. It will complain if the last CFI wasn't properly closed by .cfi_endproc. */ extern void cfi_finish (void); /* Entry points for backends to add unwind information. */ extern void cfi_new_fde (struct symbol *); extern void cfi_end_fde (struct symbol *); extern void cfi_set_return_column (unsigned); extern void cfi_add_advance_loc (struct symbol *); extern void cfi_add_CFA_offset (unsigned, offsetT); extern void cfi_add_CFA_def_cfa (unsigned, offsetT); extern void cfi_add_CFA_register (unsigned, unsigned); extern void cfi_add_CFA_def_cfa_register (unsigned); extern void cfi_add_CFA_def_cfa_offset (offsetT); extern void cfi_add_CFA_restore (unsigned); extern void cfi_add_CFA_undefined (unsigned); extern void cfi_add_CFA_same_value (unsigned); extern void cfi_add_CFA_remember_state (void); extern void cfi_add_CFA_restore_state (void); /* Structures for md_cfi_end. */ #if defined (TE_PE) || defined (TE_PEP) #define SUPPORT_FRAME_LINKONCE 1 #else #define SUPPORT_FRAME_LINKONCE 0 #endif struct cfi_insn_data { struct cfi_insn_data *next; #if SUPPORT_FRAME_LINKONCE segT cur_seg; #endif int insn; union { struct { unsigned reg; offsetT offset; } ri; struct { unsigned reg1; unsigned reg2; } rr; unsigned r; offsetT i; struct { symbolS *lab1; symbolS *lab2; } ll; struct cfi_escape_data *esc; struct { unsigned reg, encoding; expressionS exp; } ea; } u; }; struct fde_entry { struct fde_entry *next; #if SUPPORT_FRAME_LINKONCE segT cur_seg; #endif symbolS *start_address; symbolS *end_address; struct cfi_insn_data *data; struct cfi_insn_data **last; unsigned char per_encoding; unsigned char lsda_encoding; expressionS personality; expressionS lsda; unsigned int return_column; unsigned int signal_frame; #if SUPPORT_FRAME_LINKONCE int handled; #endif }; /* The list of all FDEs that have been collected. */ extern struct fde_entry *all_fde_data; /* Fake CFI type; outside the byte range of any real CFI insn. */ #define CFI_adjust_cfa_offset 0x100 #define CFI_return_column 0x101 #define CFI_rel_offset 0x102 #define CFI_escape 0x103 #define CFI_signal_frame 0x104 #define CFI_val_encoded_addr 0x105 #endif /* DW2GENCFI_H */