168 lines
4.4 KiB
Plaintext
168 lines
4.4 KiB
Plaintext
@c Copyright (C) 2009-2015 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
|
|
|
|
@item -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
|
|
|
|
@item -SCORE5U
|
|
Assemble code for target is SCORE5U
|
|
|
|
@item -SCORE7
|
|
Assemble code for target is SCORE7, this is default setting
|
|
|
|
@item -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.
|