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+.\" *********************************** start of \input{common.tex}
+.\" *********************************** end of \input{common.tex}
+'\" t
+.\" Manual page created with latex2man on Sat Apr 20 19:14:02 EDT 2019
+.\" NOTE: This file is generated, DO NOT EDIT.
+.de Vb
+.ft CW
+.nf
+..
+.de Ve
+.ft R
+
+.fi
+..
+.TH "UNW\\_STEP" "3" "20 April 2019" "Programming Library " "Programming Library "
+.SH NAME
+unw_step
+\-\- advance to next stack frame 
+.PP
+.SH SYNOPSIS
+
+.PP
+#include <libunwind.h>
+.br
+.PP
+int
+unw_step(unw_cursor_t *cp);
+.br
+.PP
+.SH DESCRIPTION
+
+.PP
+The unw_step()
+routine advances the unwind cursor cp
+to 
+the next older, less deeply nested stack frame. 
+.PP
+.SH RETURN VALUE
+
+.PP
+On successful completion, unw_step()
+returns a positive value 
+if the updated cursor refers to a valid stack frame, or 0 if the 
+previous stack frame was the last frame in the chain. On error, the 
+negative value of one of the error\-codes below is returned. 
+.PP
+.SH THREAD AND SIGNAL SAFETY
+
+.PP
+unw_step()
+is thread\-safe. If cursor cp
+is in the local 
+address\-space, this routine is also safe to use from a signal handler. 
+.PP
+.SH ERRORS
+
+.PP
+.TP
+UNW_EUNSPEC
+ An unspecified error occurred. 
+.TP
+UNW_ENOINFO
+ Libunwind
+was unable to locate the 
+unwind\-info needed to complete the operation. 
+.TP
+UNW_EBADVERSION
+ The unwind\-info needed to complete the 
+operation has a version or a format that is not understood by 
+libunwind\&.
+.TP
+UNW_EINVALIDIP
+ The instruction\-pointer 
+(``program\-counter\&'') of the next stack frame is invalid (e.g., not 
+properly aligned). 
+.TP
+UNW_EBADFRAME
+ The next stack frame is invalid. 
+.TP
+UNW_ESTOPUNWIND
+ Returned if a call to 
+find_proc_info()
+returned \-UNW_ESTOPUNWIND\&.
+.PP
+In addition, unw_step()
+may return any error returned by the 
+find_proc_info(),
+get_dyn_info_list_addr(),
+access_mem(),
+access_reg(),
+or access_fpreg()
+call\-backs (see unw_create_addr_space(3)).
+.PP
+.SH SEE ALSO
+
+.PP
+libunwind(3),
+unw_create_addr_space(3)
+.PP
+.SH AUTHOR
+
+.PP
+David Mosberger\-Tang
+.br
+Email: \fBdmosberger@gmail.com\fP
+.br
+WWW: \fBhttp://www.nongnu.org/libunwind/\fP\&.
+.\" NOTE: This file is generated, DO NOT EDIT.