1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/* dw2gencfi.h - Support for generating Dwarf2 CFI information.
Copyright 2003 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 2, 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, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#ifndef DW2GENCFI_H
#define DW2GENCFI_H
#include "elf/dwarf2.h"
struct cfi_config {
/* Target address length in bytes. (usually 4 or 8).
Round it up for archs like S/390 with 31b addresses. */
unsigned int addr_length;
/* Alignment of .eh_frame blocks in bytes (usually 1, 4 or 8). */
unsigned int eh_align;
/* Code alignment (1 for x86/amd64 machines, 4 or 8 for
RISC machines). Consult Dwarf2 standard for details. */
int code_align;
/* Data (stack) alignment (-4 on x86, -8 on amd64, something
positive on archs where stack grows up). Consult Dwarf2
standard for details. */
int data_align;
/* Return address column (0x8 on x86, 0x10 on amd64). Consult
Dwarf2 standard for details. */
int ra_column;
/* Relocation type for init_addr FDE record. (BFD_RELOC_64
on amd64). */
int reloc_type;
};
/* Codes of CFI instructions taken from Dwarf2 standard. */
enum cfi_insn {
CFA_nop = DW_CFA_nop,
CFA_set_loc = DW_CFA_set_loc,
CFA_advance_loc1 = DW_CFA_advance_loc1,
CFA_advance_loc2 = DW_CFA_advance_loc2,
CFA_advance_loc4 = DW_CFA_advance_loc4,
CFA_offset_extended = DW_CFA_offset_extended,
CFA_resotre_extended = DW_CFA_restore_extended,
CFA_undefined = DW_CFA_undefined,
CFA_same_value = DW_CFA_same_value,
CFA_register = DW_CFA_register,
CFA_remember_state = DW_CFA_remember_state,
CFA_restore_state = DW_CFA_restore_state,
CFA_def_cfa = DW_CFA_def_cfa,
CFA_def_cfa_register = DW_CFA_def_cfa_register,
CFA_def_cfa_offset = DW_CFA_def_cfa_offset,
CFA_advance_loc = DW_CFA_advance_loc,
CFA_offset = DW_CFA_offset,
CFA_restore = DW_CFA_restore,
/* These don't belong to the standard. */
CFI_startproc = 0xff00,
CFI_endproc = 0xff01,
CFI_adjust_cfa_offset = 0xff10,
CFI_verbose = 0xffff
};
extern const pseudo_typeS cfi_pseudo_table[];
/* Insert .cfi_* directives to the list of pseudo-ops. */
void cfi_pop_insert PARAMS ((void));
/* Set/change setup of the CFI machinery. This change won't
affect already generated CIEs/FDEs. */
void cfi_set_config PARAMS ((struct cfi_config *cfg));
/* cfi_finish() is called at the end of file. It will complain if
the last CFI wasn't properly closed by .cfi_endproc. */
void cfi_finish PARAMS ((void));
/* Add CFI instruction to the list of instructions
of the current frame. cfi_add_insn() could be used
in tc_cfi_frame_initial_instructions() to add instructions
needed for every frame (ie. those that usually go to CIE). */
void cfi_add_insn (enum cfi_insn insn, long param0, long param1);
#endif /* DW2GENCFI_H */
|
