Getting Started with x86 » History » Revision 44
Revision 43 (Alexander Kamkin, 04/06/2017 05:03 PM) → Revision 44/87 (Alexander Kamkin, 04/06/2017 05:05 PM)
h1. Getting Started with x86
{{toc}}
h2. Prerequisite
MicroTESK should be [[Installation Guide|installed]].
h2. Demo Specifications
Specifications of the x86 (8086) instruction set architecture (ISA) can be found in "$MICROTESK_HOME/arch/demo/x86/model/x86.nml":http://forge.ispras.ru/projects/microtesk/repository/entry/trunk/microtesk/src/main/arch/demo/x86/model/x86.nml.
Instruction are described in [[nML Language Reference|nML]] by means of the following constructs (_mov r16/r16_ is taken as an example):
## the signature
<pre>op mov_r1616 (dst: GPR16, src: GPR16)</pre>
## the assembly format
<pre>syntax = format("mov %s, %s", dst.syntax, src.syntax)</pre>
## the binary encoding
<pre>image = format("1000101111%s%s", dst.image, src.image)</pre>
## the semantics
<pre>
action = {
dst = src;
...
}
</pre>
To compile the ISA model, run the following command:
<pre>$MICROTESK_HOME/bin/compile.sh x86.nml</pre>
h2. Demo Templates
Test templates for the x86 ISA can be found in "$MICROTESK_HOME/arch/demo/x86/templates":http://forge.ispras.ru/projects/microtesk/repository/entry/trunk/microtesk/src/main/arch/demo/x86/templates.
The directory contains a number of demo templates including the following ones:
{background:#f6fcff}. | "block.rb":http://forge.ispras.ru/projects/microtesk/repository/entry/trunk/microtesk/src/main/arch/demo/x86/templates/block.rb | demonstrates how to use block constructs |
| "block_random.rb":http://forge.ispras.ru/projects/microtesk/repository/entry/trunk/microtesk/src/main/arch/demo/x86/templates/block_random.rb | demonstrates how to create randomized instruction sequences using block constructs |
{background:#f6fcff}. | "euclid.rb":http://forge.ispras.ru/projects/microtesk/repository/entry/trunk/microtesk/src/main/arch/demo/x86/templates/euclid.rb | demonstrates test program simulation to predict the resulting microprocessor state |
| "random.rb":http://forge.ispras.ru/projects/microtesk/repository/entry/trunk/microtesk/src/main/arch/demo/x86/templates/random.rb | demonstrates how to randomize tests by using biases biased values, intervals, arrays, and distributions |
{background:#f6fcff}. | "random_immediate.rb":http://forge.ispras.ru/projects/microtesk/repository/entry/trunk/microtesk/src/main/arch/demo/x86/templates/random_immediate.rb | demonstrates how to randomize immediate values |
| "random_registers.rb":http://forge.ispras.ru/projects/microtesk/repository/entry/trunk/microtesk/src/main/arch/demo/x86/templates/random_registers.rb | demonstrates how to randomize registers (dependencies) |
Test templates are written in "Ruby":http://www.ruby-lang.org extended with specific [[Template_Description_Language|constructs]].
To generate test program(s) from a test template (say, @block.rb@), run the following command:
<pre>$MICROTESK_HOME/bin/generate.sh x86 block.rb --code-file-prefix block --code-file-extension -v</pre>
When generation is finished, the resulting assembly code can be found in @$MICROTESK_HOME@.