| /* 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 */ |