unw_apply_reg_state - Man Page
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(3libunwind)).
See Also
libunwind(3libunwind), unw_reg_states_iterate(3libunwind)
Author
David Mosberger-Tang
Email: dmosberger@gmail.com
WWW: http://www.nongnu.org/libunwind/.