1 //===----------------------------------------------------------------------===// 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 23 extern "C" { 24 #endif 25 26 extern int __unw_getcontext(unw_context_t *); 27 extern int __unw_init_local(unw_cursor_t *, unw_context_t *); 28 extern int __unw_step(unw_cursor_t *); 29 extern int __unw_get_reg(unw_cursor_t *, unw_regnum_t, unw_word_t *); 30 extern int __unw_get_fpreg(unw_cursor_t *, unw_regnum_t, unw_fpreg_t *); 31 extern int __unw_set_reg(unw_cursor_t *, unw_regnum_t, unw_word_t); 32 extern int __unw_set_fpreg(unw_cursor_t *, unw_regnum_t, unw_fpreg_t); 33 extern int __unw_resume(unw_cursor_t *); 34 35 #ifdef __arm__ 36 /* Save VFP registers in FSTMX format (instead of FSTMD). */ 37 extern void __unw_save_vfp_as_X(unw_cursor_t *); 38 #endif 39 40 extern const char *__unw_regname(unw_cursor_t *, unw_regnum_t); 41 extern int __unw_get_proc_info(unw_cursor_t *, unw_proc_info_t *); 42 extern int __unw_is_fpreg(unw_cursor_t *, unw_regnum_t); 43 extern int __unw_is_signal_frame(unw_cursor_t *); 44 extern int __unw_get_proc_name(unw_cursor_t *, char *, size_t, unw_word_t *); 45 46 #if defined(_AIX) 47 extern uintptr_t __unw_get_data_rel_base(unw_cursor_t *); 48 #endif 49 50 // SPI 51 extern void __unw_iterate_dwarf_unwind_cache(void (*func)( 52 unw_word_t ip_start, unw_word_t ip_end, unw_word_t fde, unw_word_t mh)); 53 54 // IPI 55 extern void __unw_add_dynamic_fde(unw_word_t fde); 56 extern void __unw_remove_dynamic_fde(unw_word_t fde); 57 58 extern void __unw_add_dynamic_eh_frame_section(unw_word_t eh_frame_start); 59 extern void __unw_remove_dynamic_eh_frame_section(unw_word_t eh_frame_start); 60 61 #if defined(_LIBUNWIND_ARM_EHABI) 62 extern const uint32_t* decode_eht_entry(const uint32_t*, size_t*, size_t*); 63 extern _Unwind_Reason_Code _Unwind_VRS_Interpret(_Unwind_Context *context, 64 const uint32_t *data, 65 size_t offset, size_t len); 66 #endif 67 68 #ifdef __cplusplus 69 } 70 #endif 71 72 #endif // __LIBUNWIND_EXT__ 73