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/* 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> |
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This file is part of GAS, the GNU Assembler. |
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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. |
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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. |
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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. */ |
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#ifndef DW2GENCFI_H |
#define DW2GENCFI_H |
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#include "dwarf2.h" |
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struct symbol; |
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extern const pseudo_typeS cfi_pseudo_table[]; |
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/* 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); |
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/* 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 *); |
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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); |
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/* Structures for md_cfi_end. */ |
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#if defined (TE_PE) || defined (TE_PEP) |
#define SUPPORT_FRAME_LINKONCE 1 |
#else |
#define SUPPORT_FRAME_LINKONCE 0 |
#endif |
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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; |
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struct |
{ |
unsigned reg1; |
unsigned reg2; |
} rr; |
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unsigned r; |
offsetT i; |
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struct |
{ |
symbolS *lab1; |
symbolS *lab2; |
} ll; |
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struct cfi_escape_data *esc; |
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struct |
{ |
unsigned reg, encoding; |
expressionS exp; |
} ea; |
} u; |
}; |
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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 |
}; |
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/* The list of all FDEs that have been collected. */ |
extern struct fde_entry *all_fde_data; |
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/* 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 |
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#endif /* DW2GENCFI_H */ |