ultrix man page for core

core(5) 							File Formats Manual							   core(5)

Name
       core - format of memory image file

Syntax
       #include <sys/param.h>

Description
       When  certain  errors  result in a terminated process, a file is created that contains the memory image of a terminated process.  A process
       can terminate for several reasons; however, the most common causes are memory violations, illegal instructions, bus errors, and user-gener-
       ated quit signals.  The reference page contains a list of the causes.

       The  is created in the working directory of the terminated process (normal access controls apply).  The maximum size of a cannot exceed the
       limit imposed by

       The file consists of the u.  area, whose size (in pages) is defined by the UPAGES manifest in the <sys/param.h> file.  The u.  area  starts
       with a user structure as given in <sys/user.h>.	The remainder of the file consists first of the data pages and then the stack pages of the
       process image.  The amount of data space image in the file is given (in pages) by the variable u_dsize in the u.  area. The amount of stack
       image in the file is given (in pages) by the variable u_ssize in the u.	area.  The size of a page is given by the constant NBPG (also from
       <sys/param.h>).

See Also
       dbx(1), sigvec(2), setrlimit(2)

								       RISC								   core(5)