crt0_ia: crt0.o - execution startup routines for Integrity systems
This manpage describes for Integrity systems. For on PA-RISC systems,
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
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
aCC(1) invoke the HP-UX aC++ compiler
cc(1) invoke the HP-UX C compiler
dld.so(5) 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 Onlycrt0_ia(3)