NAME

as − assembler

SYNOPSIS

as [ −b ] [ −K PIC ] [ −L ] [ −m ] [ −o outfile ] [ −O[n]] [ −P [ [ −Dname ] [ −Dname=def ]

[ −Ipath ] [ −Uname ]]...] [ −q ] [ −Q{y|n} ] [ −s ] [ −S[C] ] [ −T ] [ −V ] [ −xF ]

filename...

DESCRIPTION

The as command creates object files from assembly language source files. and there are no unresolved external references.

OPTIONS

The following flags may be specified in any order:

−b Enable Sun SourceBrowser. 

−Dname

−Dname=def When the −P option is in effect, these options are passed to the cpp(1) preprocessor without interpretation by the as command; otherwise, they are ignored. 

−Ipath When the −P option is in effect, this option is passed to the cpp(1) preprocessor without interpretation by the as command; otherwise, it is ignored. 

−K PIC Generate position-independent code. 

−L Save all symbols, including temporary labels that are normally discarded to save space, in the ELF symbol table. 

−o outfile Put the output of the assembly in outfile. By default, the output file name is formed by removing the .s suffix, if there is one, from the input file name and appending a .o suffix. 

−O[n] Enable peephole optimization corresponding to optimization level n of the Sun high-level language compilers.  If n is not specified, the default is 1.  This option can be used safely only when assembling code produced by a SPARC compiler. 

−P Run cpp(1), the C preprocessor, on the files being assembled.  The preprocessor is run separately on each input file, not on their concatenation.  The preprocessor output is passed to the assembler. 

−q Perform a quick assembly.  When the −q option is used, the node list is not built and the assembler simply emits instructions as they are read. 
Note: This option disables many error checks.  It is recommended that you do not use this option to assemble handwritten assembly language. 

−Q{y|n} Produce information in the comment section of the output object file if the y option is specified; if the n option is specified, the information is suppressed. 

−m Run the m4(1) macro processor on the input to the assembler. 

−s Place all stabs in the .stabs section. By default, stabs ares placed in stabs.excl sections, which are stripped out by the static linker, ld(1), during final execution.  When the −s option is used, stabs remain in the final executable because .stab sections are not stripped by the static linker. 

−S[C] Produce a disassembly of the emitted code to the standard output.  This option is most useful in combination with the −O option to review optimized code. Adding the character C to the option prevents comment lines from appearing in the output. 

−T This is a migration option for 4.1 assembly files to be assembled on 5.0 systems. With this option, the symbol names in 4.1 assembly files will be interpreted as 5.0 symbol names. 

−Uname When the −P option is in effect, this option is passed to the cpp(1) preprocessor without interpretation by the as command; otherwise, it is ignored. 

−V Write the version number of the assembler being run on the standard error output. 

−xF Generates additional information for performance analysis of the executable using SPARCworks analyzer.  If the input file does not contain any stabs (debugging directives), then the assembler will generate some default stabs which are needed by the SPARCworks analyzer.  Also see manual page analyzer(1), dbx(1), and collector(1). 

FILES

By default, as creates its temporary files in /tmp. 

SEE ALSO

cc(1B), cpp(1), ld(1), m4(1), nm(1), strip(1), tmpnam(3S), a.out(4)

NOTES

If the −m (invoke the m4(1) macro processor) option is used, keywords for m4(1) cannot be used as symbols (variables, functions, labels) in the input file since m4(1) cannot determine which keywords are assembler symbols and which keywords are real m4(1) macros. 

Whenever possible, you should access the assembler through a compilation system interface program such as cc(1B). 

All undefined symbols are treated as global. 

SunOS 5.1  —  Last change: 5 Jul 1990