Manpages - unw_apply_reg_state.3
Table of Contents
NAME
unw_apply_reg_state – apply a register state update to a cursor
SYNOPSIS
#include <libunwind.h>
int unw_apply_reg_state(unw_cursor_t *cp, void *reg_states_data);
DESCRIPTION
The unw_apply_reg_state() routine updates the register values of a cursor according to the instructions in reg_states_data, which have been obtained by calling unw_reg_states_iterate.
RETURN VALUE
On successful completion, unw_apply_reg_state() returns 0. Otherwise the negative value of one of the error-codes below is returned.
THREAD AND SIGNAL SAFETY
unw_apply_reg_state() is thread-safe. If cursor cp is in the local address-space, this routine is also safe to use from a signal handler.
ERRORS
- UNW_EUNSPEC
- An unspecified error occurred.
- UNW_ENOINFO
- Libunwind was unable to locate unwind-info for the procedure.
- UNW_EBADVERSION
- The unwind-info for the procedure has version or format that is not understood by libunwind.
In addition, unw_apply_reg_state() may return any error returned by the access_mem() call-back (see unw_create_addr_space(3)).
SEE ALSO
libunwind(3), unw_reg_states_iterate(3)
AUTHOR
David Mosberger-Tang
Email: dmosberger@gmail.com
WWW: http://www.nongnu.org/libunwind/.