[PATCH 22/57][Arm][GAS] Add support for MVE instructions: vmlaldav, vmlalv, vmlsldav...
[binutils-gdb.git] / gas / dw2gencfi.h
blob605ae3a8c9219ad253cd5e1c94d611853c2aadd4
1 /* dw2gencfi.h - Support for generating Dwarf2 CFI information.
2 Copyright (C) 2003-2019 Free Software Foundation, Inc.
3 Contributed by Michal Ludvig <mludvig@suse.cz>
5 This file is part of GAS, the GNU Assembler.
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
10 any later version.
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
20 02110-1301, USA. */
22 #ifndef DW2GENCFI_H
23 #define DW2GENCFI_H
25 #include "dwarf2.h"
27 struct symbol;
29 extern const pseudo_typeS cfi_pseudo_table[];
31 /* cfi_finish() is called at the end of file. It will complain if
32 the last CFI wasn't properly closed by .cfi_endproc. */
33 extern void cfi_finish (void);
35 /* Entry points for backends to add unwind information. */
36 extern void cfi_new_fde (struct symbol *);
37 extern void cfi_end_fde (struct symbol *);
38 extern void cfi_set_return_column (unsigned);
39 extern void cfi_set_sections (void);
40 extern void cfi_add_advance_loc (struct symbol *);
41 extern void cfi_add_label (const char *);
43 extern void cfi_add_CFA_offset (unsigned, offsetT);
44 extern void cfi_add_CFA_val_offset (unsigned, offsetT);
45 extern void cfi_add_CFA_def_cfa (unsigned, offsetT);
46 extern void cfi_add_CFA_register (unsigned, unsigned);
47 extern void cfi_add_CFA_def_cfa_register (unsigned);
48 extern void cfi_add_CFA_def_cfa_offset (offsetT);
49 extern void cfi_add_CFA_restore (unsigned);
50 extern void cfi_add_CFA_undefined (unsigned);
51 extern void cfi_add_CFA_same_value (unsigned);
52 extern void cfi_add_CFA_remember_state (void);
53 extern void cfi_add_CFA_restore_state (void);
55 /* Structures for md_cfi_end. */
57 #if defined (TE_PE) || defined (TE_PEP)
58 #define SUPPORT_FRAME_LINKONCE 1
59 #else
60 #define SUPPORT_FRAME_LINKONCE 0
61 #endif
63 #ifdef tc_cfi_reloc_for_encoding
64 #define SUPPORT_COMPACT_EH 1
65 #else
66 #define SUPPORT_COMPACT_EH 0
67 #endif
69 #define MULTIPLE_FRAME_SECTIONS (SUPPORT_FRAME_LINKONCE || SUPPORT_COMPACT_EH)
71 struct cfi_insn_data
73 struct cfi_insn_data *next;
74 #if MULTIPLE_FRAME_SECTIONS
75 segT cur_seg;
76 #endif
77 int insn;
78 union
80 struct
82 unsigned reg;
83 offsetT offset;
84 } ri;
86 struct
88 unsigned reg1;
89 unsigned reg2;
90 } rr;
92 unsigned r;
93 offsetT i;
95 struct
97 symbolS *lab1;
98 symbolS *lab2;
99 } ll;
101 struct cfi_escape_data *esc;
103 struct
105 unsigned reg, encoding;
106 expressionS exp;
107 } ea;
109 const char *sym_name;
110 } u;
113 /* An enumeration describing the Compact EH header format. The least
114 significant bit is used to distinguish the entries.
116 Inline Compact: Function offset [0]
117 Four chars of unwind data.
118 Out-of-line Compact: Function offset [1]
119 Compact unwind data offset [0]
120 Legacy: Function offset [1]
121 Unwind data offset [1]
123 The header type is initialized to EH_COMPACT_UNKNOWN until the
124 format is discovered by encountering a .fde_data entry.
125 Failure to find a .fde_data entry will cause an EH_COMPACT_LEGACY
126 header to be generated. */
128 enum {
129 EH_COMPACT_UNKNOWN,
130 EH_COMPACT_LEGACY,
131 EH_COMPACT_INLINE,
132 EH_COMPACT_OUTLINE,
133 EH_COMPACT_OUTLINE_DONE,
134 /* Outline if .cfi_inline_lsda used, otherwise legacy FDE. */
135 EH_COMPACT_HAS_LSDA
138 /* Stack of old CFI data, for save/restore. */
139 struct cfa_save_data
141 struct cfa_save_data *next;
142 offsetT cfa_offset;
145 /* Current open FDE entry. */
146 struct frch_cfi_data
148 struct fde_entry *cur_fde_data;
149 symbolS *last_address;
150 offsetT cur_cfa_offset;
151 struct cfa_save_data *cfa_save_stack;
154 struct fde_entry
156 struct fde_entry *next;
157 #if MULTIPLE_FRAME_SECTIONS
158 segT cur_seg;
159 #endif
160 symbolS *start_address;
161 symbolS *end_address;
162 struct cfi_insn_data *data;
163 struct cfi_insn_data **last;
164 unsigned char per_encoding;
165 unsigned char lsda_encoding;
166 int personality_id;
167 expressionS personality;
168 expressionS lsda;
169 unsigned int return_column;
170 unsigned int signal_frame;
171 #if MULTIPLE_FRAME_SECTIONS
172 int handled;
173 #endif
174 int eh_header_type;
175 /* Compact unwinding opcodes, not including the PR byte or LSDA. */
176 int eh_data_size;
177 bfd_byte *eh_data;
178 /* For out of line tables and FDEs. */
179 symbolS *eh_loc;
180 int sections;
181 #ifdef tc_fde_entry_extras
182 tc_fde_entry_extras
183 #endif
186 /* The list of all FDEs that have been collected. */
187 extern struct fde_entry *all_fde_data;
189 /* Fake CFI type; outside the byte range of any real CFI insn. */
190 #define CFI_adjust_cfa_offset 0x100
191 #define CFI_return_column 0x101
192 #define CFI_rel_offset 0x102
193 #define CFI_escape 0x103
194 #define CFI_signal_frame 0x104
195 #define CFI_val_encoded_addr 0x105
196 #define CFI_label 0x106
198 /* By default emit .eh_frame only, not .debug_frame. */
199 #define CFI_EMIT_eh_frame (1 << 0)
200 #define CFI_EMIT_debug_frame (1 << 1)
201 #define CFI_EMIT_target (1 << 2)
202 #define CFI_EMIT_eh_frame_compact (1 << 3)
204 #endif /* DW2GENCFI_H */