NAME

as - assembler

SPARC SYNOPSIS

as [ -b ] [ -K PIC ] [ -L ] [ -m ] [ -n ] [ -o outfile ] [ -P ] [ -Dname ] [ -Dname=def ] [ -Ipath ] [ -Uname . . . ] [ -q ] [ -Qy | n ] [ -s ] [ -S[a|C] ] [ -T ] [ -V ] [ -xarch=v7 ] [ -xarch=v8 ] [ -xarch=v8a ] [ -xarch=v8plus ] [ -xarch=v8plusa ] [ -xF ] filename . . .

x86 SYNOPSIS

as [ -m ] [ -n ] [ -o outfile ] [ -P ] [ -Dname ] [ -Dname=def ] [ -Ipath ] [ -Uname . . . ] [ -Qy | n ] [ -s ] [ -V ] filename . . .

AVAILABILITY

SUNWsprot

DESCRIPTION

The as command creates object files from assembly language source files.

OPTIONS

The following flags may be specified in any order:

-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.

-m

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

-n

Suppress all the warnings while assembling.

-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.

-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.

-Qy |n

Produce the "assembler version" 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.

-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.

3f4-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.

SPARC Options

-b

Generate extra symbol table information for the Sun SourceBrowser.

-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.

-q

Perform a quick assembly. When the -q option is used, many error checks are not performed.

Note: This option disables many error checks. It is recommended that you do not use this option to assemble handwritten assembly language.

-S[a|C]

Produce a disassembly of the emitted code to the standard output. Adding the character a to the option appends a comment line to each assembly code which indicates its relative address in its own section. Adding the character C to the option prevents comment lines from appearing in the output.

-T

This is a migration option for 4.x assembly files to be assembled on 5.x systems. With this option, the symbol names in 4.x assembly files will be interpreted as 5.x symbol names.

-xarch=v7

This option instructs the assembler to accept instructions defined in the SPARC version 7 (V7) architecture. The resulting object code is in ELF format.

-xarch=v8

This option instructs the assembler to accept instructions defined in the SPARC-V8 architecture, less the quad-precision floating-point instructions. The resulting object code is in ELF format.

-xarch=v8a

This option instructs the assembler to accept instructions defined in the SPARC-V8 architecture, less the quad-precision floating-point instructions and less the fsmuld instruction. The resulting object code is in ELF format. This is the default choice of the -xarch= options.

-xarch=v8plus

This option instructs the assembler to accept instructions defined in the SPARC-V9 architecture, less the quad-precision floating-point instructions. The resulting object code is in ELF format. It will not execute on a Solaris V8 system (a machine with a V8 processor). It will execute on a Solaris V8+ system.

-xarch=v8plusa This option instructs the assembler to accept instructions defined in the

SPARC-V9 architecture, less the quad-precision floating-point instructions, plus the instructions in the Visual Instruction Set (VIS). The resulting object code is in V8+ ELF format. It will not execute on a Solaris V8 system (a machine with a V8 processor). It will execute on a Solaris V8+ system

-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 the manual page dbx.

ENVIRONMENT

TMPDIR

as normally creates temporary files in the directory /tmp. You may specify another directory by setting the environment variable TMPDIR to your chosen directory. (If TMPDIR isn't a valid directory, then as will use /tmp).

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.