crt0.o man page on HP-UX

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crt0_ia(3)							    crt0_ia(3)

       crt0_ia: crt0.o - execution startup routines for Integrity systems

       This  manpage describes for Integrity systems.  For on PA-RISC systems,
       see crt0_pa(3).

       The C, aC++, and FORTRAN compilers link in the object file  for	stati‐
       cally-bound  programs  to provide startup capabilities and environments
       for program execution.  It contains startup code that  must  be	linked
       using to every statically-bound	program.  In a dynamically linked pro‐
       gram (the default method), the object file is not used, and all actions
       normally	 associated  with  it  are  instead done by the dynamic loader

       processes initializers and terminators.	Initializers are routines that
       are  called before the program entry point and terminators are routines
       that are called when the program terminates via the routine.   Initial‐
       izers  are  invoked in reverse order of the link line so that dependent
       libraries are initialized before the libraries  that  depend  on	 them.
       Terminators, on the other hand, are invoked in the forward order.

       does  not define any variables.	It, however, sets the following global

	      A variable of type  long containing the number of arguments.

	      An array of character pointers to the arguments themselves.

	      An array of character pointers to the environment in which the
				  program will run.  This array is  terminated
				  by a null pointer.

	      A variable of type  long	containing  the system id value for an
				  executable program.

	      A variable of type  long containing the requested	 thread	 local
				  storage  size.  This variable is initialized
				  with data from the kernel.

	      A variable of type  void * containing  load  information	passed
				  from the kernel.

	      A variable of type  void	*  whose  value	 equals	 to the global

				  A symbol named is also  declared  in	as  an
				  enumeration  constant,  and  is incompatible
				  with the declaration in In order to  include
				  both header files, it is necessary to define
				  the macro before including This  will	 force
				  the header file to omit the conflicting def‐
				  inition  of  The  enumeration	 constant   is
				  equivalent  to  in  that context, and may be
				  used instead.	 See ttrace(2).

       The features described in this entry originated from AT&T  UNIX	System

   System Tools
       aCC(1)		 invoke the HP-UX aC++ compiler
       cc(1)		 invoke the HP-UX C compiler	 the dynamic loader
       exec(2)		 execute a file
       f90(1)		 invoke the HP-UX FORTRAN compiler
       ld(1)		 invoke the link editor
       end(3C)		 symbol of the last locations in program

Integrity Systems Only						    crt0_ia(3)

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