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@c Copyright 2009, 2011

@c Free Software Foundation, Inc.

@c This is part of the GAS manual.

@c For copying conditions, see the file as.texinfo.

@ifset GENERIC

@page

@node SCORE-Dependent

@chapter SCORE Dependent Features

@end ifset

@ifclear GENERIC

@node Machine Dependencies

@chapter SCORE Dependent Features

@end ifclear

@cindex SCORE processor

@menu

* SCORE-Opts::          Assembler options

* SCORE-Pseudo::        SCORE Assembler Directives

* SCORE-Syntax::        Syntax

@end menu

@node SCORE-Opts

@section Options

@cindex options for SCORE

@cindex SCORE options

@cindex architectures, SCORE

@cindex SCORE architectures

The following table lists all available SCORE options.

@table @code

@item -G @var{num}

This option sets the largest size of an object that can be referenced

implicitly with the @code{gp} register. The default value is 8.

@item -EB

Assemble code for a big-endian cpu

@itemx -EL

Assemble code for a little-endian cpu

@item -FIXDD

Assemble code for fix data dependency

@item -NWARN

Assemble code for no warning message for fix data dependency

@item -SCORE5

Assemble code for target is SCORE5

@itemx -SCORE5U

Assemble code for target is SCORE5U

@itemx -SCORE7

Assemble code for target is SCORE7, this is default setting

@itemx -SCORE3

Assemble code for target is SCORE3

@item -march=score7

Assemble code for target is SCORE7, this is default setting

@item -march=score3

Assemble code for target is SCORE3

@item -USE_R1

Assemble code for no warning message when using temp register r1

@item -KPIC

Generate code for PIC.  This option tells the assembler to generate

score position-independent macro expansions.  It also tells the

assembler to mark the output file as PIC.

@item -O0

Assembler will not perform any optimizations

@item -V

Sunplus release version

@end table

@node SCORE-Pseudo

@section SCORE Assembler Directives

@cindex directives for SCORE

@cindex SCORE directives

A number of assembler directives are available for SCORE.  The

following table is far from complete.

@table @code

@item .set nwarn

Let the assembler not to generate warnings if the source machine

language instructions happen data dependency.

@item .set fixdd

Let the assembler to insert bubbles (32 bit nop instruction /

16 bit nop! Instruction) if the source machine language instructions

happen data dependency.

@item .set nofixdd

Let the assembler to generate warnings if the source machine

language instructions happen data dependency. (Default)

@item .set r1

Let the assembler not to generate warnings if the source program

uses r1. allow user to use r1

@item set nor1

Let the assembler to generate warnings if the source program uses

r1. (Default)

@item .sdata

Tell the assembler to add subsequent data into the sdata section

@item .rdata

Tell the assembler to add subsequent data into the rdata section

@item .frame "frame-register", "offset", "return-pc-register"

Describe a stack frame. "frame-register" is the frame register,

"offset" is the distance from the frame register to the virtual

frame pointer, "return-pc-register" is the return program register.

You must use ".ent" before ".frame" and only one ".frame" can be

used per ".ent".

@item .mask "bitmask", "frameoffset"

Indicate which of the integer registers are saved in the current

function's stack frame, this is for the debugger to explain the

frame chain.

@item .ent "proc-name"

Set the beginning of the procedure "proc_name". Use this directive

when you want to generate information for the debugger.

@item .end proc-name

Set the end of a procedure. Use this directive to generate information

for the debugger.

@item .bss

Switch the destination of following statements into the bss section,

which is used for data that is uninitialized anywhere.

@end table

@node SCORE-Syntax

@section SCORE Syntax

@menu

* SCORE-Chars::                Special Characters

@end menu

@node SCORE-Chars

@subsection Special Characters

@cindex line comment character, SCORE

@cindex SCORE line comment character

The presence of a @samp{#} appearing anywhere on a line indicates the

start of a comment that extends to the end of that line.

If a @samp{#} appears as the first character of a line then the whole

line is treated as a comment, but in this case the line can also be a

logical line number directive (@pxref{Comments}) or a preprocessor

control command (@pxref{Preprocessing}).

@cindex line separator, SCORE

@cindex statement separator, SCORE

@cindex SCORE line separator

The @samp{;} character can be used to separate statements on the same

line.