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uwx_init_context(3X)					  uwx_init_context(3X)

NAME
       uwx_init_context() - initialize the unwind context

SYNOPSIS

DESCRIPTION
       is  part	 of  the  Unwind  Express  Library  for Integrity systems; see
       uwx(3X).	 provides the basic initial context as a  starting  point  for
       unwinding.  This initial context consists of the values of ip (instruc‐
       tion pointer), sp (stack pointer), bsp (backing store pointer), and cfm
       (current	 frame	marker).   The frame described by these values becomes
       the current frame.

       These values alone are not usually  sufficient  for  a  complete	 stack
       unwind,	but the unwind engine will use the copy-in callback routine to
       obtain additional context information as needed.

       For self-unwinding, this entry  point  should  not  be  used  directly.
       Instead, use

   Parameters
       env	      A pointer to an unwind environment object.

       ip	      The current instruction pointer.

       sp	      The current stack pointer.

       bsp	      The  backing  store pointer: the address in the register
		      stack backing store where	 GR32  of  the	current	 frame
		      would be stored by the register stack engine.

       cfm	      The  current  frame  marker and epilog counter.  Because
		      the unwind library tracks the epilog counter as part  of
		      the  ar.pfs  register, this parameter should combine the
		      cfm and epilog counter in the same way they are combined
		      in the ar.pfs register when a function call is made.  In
		      other words, the value of should be used as the  initial
		      cfm.

RETURN VALUE
       returns on success.  See uwx(3X) for error codes.

AUTHOR
       The Unwind Express Library was developed by Hewlett-Packard.

SEE ALSO
       uwx(3X),	 uwx_add_to_bsp(3X),  uwx_find_source_info(3X),	 uwx_find_sym‐
       bol(3X),	 uwx_free(3X),	 uwx_get_abi_context_code(3X),	 uwx_get_func‐
       start(3X),  uwx_get_module_info(3X),  uwx_get_nat(3X), uwx_get_reg(3X),
       uwx_get_source_info(3X),	     uwx_get_sym_info(3X),	 uwx_init(3X),
       uwx_init_context(3X),   uwx_register_alloc_cb(3X),   uwx_register_call‐
       backs(3X), uwx_release_symbol_cache(3X), uwx_self_do_context_frame(3X),
       uwx_self_free_info(3X),			    uwx_self_init_context(3X),
       uwx_self_init_info(3X),	    uwx_set_nofr(3X),	   uwx_set_remote(3X),
       uwx_step(3X), uwx_step_inline(3X).

			    Integrity Systems Only	  uwx_init_context(3X)

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