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a2c5833233
The result of running etc/update-copyright.py --this-year, fixing all the files whose mode is changed by the script, plus a build with --enable-maintainer-mode --enable-cgen-maint=yes, then checking out */po/*.pot which we don't update frequently. The copy of cgen was with commit d1dd5fcc38ead reverted as that commit breaks building of bfp opcodes files.
91 lines
2.5 KiB
Plaintext
91 lines
2.5 KiB
Plaintext
@c Copyright (C) 2014-2022 Free Software Foundation, Inc.
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@c This is part of the GAS manual.
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@c For copying conditions, see the file as.texinfo.
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@c man end
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@ifset GENERIC
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@page
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@node Visium-Dependent
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@chapter Visium Dependent Features
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@end ifset
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@ifclear GENERIC
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@node Machine Dependencies
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@chapter Visium Dependent Features
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@end ifclear
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@cindex Visium support
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@menu
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* Visium Options:: Options
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* Visium Syntax:: Syntax
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* Visium Opcodes:: Opcodes
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@end menu
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@node Visium Options
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@section Options
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@cindex Visium options
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@cindex options for Visium
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The Visium assembler implements one machine-specific option:
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@c man begin OPTIONS
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@table @gcctabopt
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@cindex @code{-mtune=@var{arch}} command-line option, Visium
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@item -mtune=@var{arch}
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This option specifies the target architecture. If an attempt is made to
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assemble an instruction that will not execute on the target architecture,
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the assembler will issue an error message.
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The following names are recognized:
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@code{mcm24}
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@code{mcm}
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@code{gr5}
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@code{gr6}
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@end table
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@c man end
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@node Visium Syntax
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@section Syntax
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@menu
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* Visium Characters:: Special Characters
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* Visium Registers:: Register Names
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@end menu
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@node Visium Characters
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@subsection Special Characters
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@cindex line comment character, Visium
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@cindex Visium line comment character
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Line comments are introduced either by the @samp{!} character or by the
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@samp{;} character appearing anywhere on a line.
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A hash character (@samp{#}) as the first character on a line also
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marks the start of a line comment, but in this case it could also be a
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logical line number directive (@pxref{Comments}) or a preprocessor
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control command (@pxref{Preprocessing}).
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@cindex line separator, Visium
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@cindex statement separator, Visium
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@cindex Visium line separator
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The Visium assembler does not currently support a line separator character.
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@node Visium Registers
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@subsection Register Names
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@cindex Visium registers
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@cindex register names, Visium
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Registers can be specified either by using their canonical mnemonic names
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or by using their alias if they have one, for example @samp{sp}.
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@node Visium Opcodes
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@section Opcodes
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All the standard opcodes of the architecture are implemented, along with the
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following three pseudo-instructions: @code{cmp}, @code{cmpc}, @code{move}.
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In addition, the following two illegal opcodes are implemented and used by the simulation:
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@example
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stop 5-bit immediate, SourceA
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trace 5-bit immediate, SourceA
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@end example
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