1//===------------------------ libunwind_ext.h -----------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//
8//  Extensions to libunwind API.
9//
10//===----------------------------------------------------------------------===//
11
12#ifndef __LIBUNWIND_EXT__
13#define __LIBUNWIND_EXT__
14
15#include "config.h"
16#include <libunwind.h>
17#include <unwind.h>
18
19#define UNW_STEP_SUCCESS 1
20#define UNW_STEP_END     0
21
22#ifdef __cplusplus
23extern "C" {
24#endif
25
26extern int __unw_getcontext(unw_context_t *);
27extern int __unw_init_local(unw_cursor_t *, unw_context_t *);
28extern int __unw_step(unw_cursor_t *);
29extern int __unw_get_reg(unw_cursor_t *, unw_regnum_t, unw_word_t *);
30extern int __unw_get_fpreg(unw_cursor_t *, unw_regnum_t, unw_fpreg_t *);
31extern int __unw_set_reg(unw_cursor_t *, unw_regnum_t, unw_word_t);
32extern int __unw_set_fpreg(unw_cursor_t *, unw_regnum_t, unw_fpreg_t);
33extern int __unw_resume(unw_cursor_t *);
34
35#ifdef __arm__
36/* Save VFP registers in FSTMX format (instead of FSTMD). */
37extern void __unw_save_vfp_as_X(unw_cursor_t *);
38#endif
39
40extern const char *__unw_regname(unw_cursor_t *, unw_regnum_t);
41extern int __unw_get_proc_info(unw_cursor_t *, unw_proc_info_t *);
42extern int __unw_is_fpreg(unw_cursor_t *, unw_regnum_t);
43extern int __unw_is_signal_frame(unw_cursor_t *);
44extern int __unw_get_proc_name(unw_cursor_t *, char *, size_t, unw_word_t *);
45
46// SPI
47extern void __unw_iterate_dwarf_unwind_cache(void (*func)(
48    unw_word_t ip_start, unw_word_t ip_end, unw_word_t fde, unw_word_t mh));
49
50// IPI
51extern void __unw_add_dynamic_fde(unw_word_t fde);
52extern void __unw_remove_dynamic_fde(unw_word_t fde);
53
54#if defined(_LIBUNWIND_ARM_EHABI)
55extern const uint32_t* decode_eht_entry(const uint32_t*, size_t*, size_t*);
56extern _Unwind_Reason_Code _Unwind_VRS_Interpret(_Unwind_Context *context,
57                                                 const uint32_t *data,
58                                                 size_t offset, size_t len);
59#endif
60
61#ifdef __cplusplus
62}
63#endif
64
65#endif // __LIBUNWIND_EXT__
66