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[libunwind] Add unw_strerror function #129084

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[libunwind] Add unw_strerror function #129084

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1 change: 1 addition & 0 deletions libunwind/include/libunwind.h
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Original file line number Diff line number Diff line change
Expand Up @@ -114,6 +114,7 @@ extern int unw_get_fpreg(unw_cursor_t *, unw_regnum_t, unw_fpreg_t *) LIBUNWIND_
extern int unw_set_reg(unw_cursor_t *, unw_regnum_t, unw_word_t) LIBUNWIND_AVAIL;
extern int unw_set_fpreg(unw_cursor_t *, unw_regnum_t, unw_fpreg_t) LIBUNWIND_AVAIL;
extern int unw_resume(unw_cursor_t *) LIBUNWIND_AVAIL;
extern const char *unw_strerror(int) LIBUNWIND_AVAIL;

#ifdef __arm__
/* Save VFP registers in FSTMX format (instead of FSTMD). */
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34 changes: 34 additions & 0 deletions libunwind/src/libunwind.cpp
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Expand Up @@ -260,6 +260,40 @@ _LIBUNWIND_HIDDEN int __unw_is_signal_frame(unw_cursor_t *cursor) {
}
_LIBUNWIND_WEAK_ALIAS(__unw_is_signal_frame, unw_is_signal_frame)

_LIBUNWIND_HIDDEN const char *__unw_strerror(int error_code) {
switch (error_code) {
case UNW_ESUCCESS:
return "no error";
case UNW_EUNSPEC:
return "unspecified (general) error";
case UNW_ENOMEM:
return "out of memory";
case UNW_EBADREG:
return "bad register number";
case UNW_EREADONLYREG:
return "attempt to write read-only register";
case UNW_ESTOPUNWIND:
return "stop unwinding";
case UNW_EINVALIDIP:
return "invalid IP";
case UNW_EBADFRAME:
return "bad frame";
case UNW_EINVAL:
return "unsupported operation or bad value";
case UNW_EBADVERSION:
return "unwind info has unsupported version";
case UNW_ENOINFO:
return "no unwind info found";
#if defined(_LIBUNWIND_TARGET_AARCH64) && !defined(_LIBUNWIND_IS_NATIVE_ONLY)
case UNW_ECROSSRASIGNING:
return "cross unwind with return address signing";
#endif
default:
return "unknown error occurred";
}
}
_LIBUNWIND_WEAK_ALIAS(__unw_strerror, unw_strerror)

#ifdef _AIX
_LIBUNWIND_EXPORT uintptr_t __unw_get_data_rel_base(unw_cursor_t *cursor) {
_LIBUNWIND_TRACE_API("unw_get_data_rel_base(cursor=%p)",
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1 change: 1 addition & 0 deletions libunwind/src/libunwind_ext.h
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,7 @@ extern int __unw_get_fpreg(unw_cursor_t *, unw_regnum_t, unw_fpreg_t *);
extern int __unw_set_reg(unw_cursor_t *, unw_regnum_t, unw_word_t);
extern int __unw_set_fpreg(unw_cursor_t *, unw_regnum_t, unw_fpreg_t);
extern int __unw_resume(unw_cursor_t *);
extern const char *__unw_strerror(int);

#ifdef __arm__
/* Save VFP registers in FSTMX format (instead of FSTMD). */
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