Reference Guide

Chapter 6 127
Assembling Your Program
Using the cc Command
Using the cc Command
You can also use the cc command to run the Assembler on files that have
a .s suffix. See cc(1) man page for the HP C/HP-UX ANSI C compiler, if
installed. The cc command inserts the system file
/usr/lib/pcc_prefix.s
in front of the .s file and pipes the file through the C preprocessor (see
cpp(1) in HP-UX Reference) before passing the file to the Assembler.
pcc_prefix.s is a concatenation of the following header files in the
directory /usr/include:
hard_reg.h Set of .REGs for hardware registers.
soft_reg.h Set of register definitions that follows the Procedure
Calling Convention.
std_space.h Set of space and subspace definitions that most
Assembler programs use.
NOTE If you are using the HP C/HP-UX ANSI C compiler, you can suppress the
pcc_prefix.s file with the cc option +a.
Passing Arguments to the Assembler
The cc command normally strips all as command options from the
command line, writing a warning to standard error. Therefore, when you
want to retain one of these options, you must include the -Wa
command-line option
-Wa, ,as-argument [ as-argument] ...
as-argument names an Assembler argument you want to preserve. For
example, to specify a cross-reference file, you could use:
-Wa,-v,myxreffile
Similarly, you can pass options to the C preprocessor (cpp) or the linker
(ld) with -Wp and -Wl, respectively.