1.

Exploración do contorno
Entrega:

1. Listado dos ficheiros no directorio actual

2. Contido do ficheiro readme.txt

2. Compilador de C
Entrega:

1. Saída da execución do comando de axuda de gcc.

2. Comando usado para a compilación do código hello.c.

3. Captura de pantalla da execución do binario resultante da compilación.

4. Captura de pantalla do código ensamblador xerado.

 5. Responde: Que significa a opción -o do comando gcc?
A opción –o garda a saída (output) da execución nun arquivo sen necesidade de compilar.

6. Responde: Que significa a opción -S do comando gcc?

Solo compila,non ensambla por o que o ficheiro creado estaría en linguaxe maquina e non
seria executable.

7. Responde: Compara as linguaxes C e ensamblador en canto a súa usabilidade e cercanía á

máquina.

A linguaxe ensamblador ten usabilidade baixa o que quere dicir que é difícil de aprender e utilizar
para o ser humano, en cambio a linguaxe C é fácil de aprender e utilizar polo ser humano. A
linguaxe C é de alto nivel (quere dicer que é mais independente da maquina e mais cercano a
linguaxe do ser humano) pero o linguaxe ensamblador é de nivel baixo porque exerce control
directo sobre o hardware, é achegado a maquina e ten un nivel de abstracción baixo.

3. Intérprete Python
Entrega:

1. Captura da axuda de python.

Options:
-pass-exit-codes Exit with highest error code from a phase.
--help Display this information.
--target-help Display target specific command line options.
--help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumen
ted}}[,...].
Display specific types of command line options.
(Use '-v --help' to display command line options of sub-processes).
--version Display compiler version information.
-dumpspecs Display all of the built in spec strings.
-dumpversion Display the version of the compiler.
-dumpmachine Display the compiler's target processor.
-print-search-dirs Display the directories in the compiler's search path
.
-print-libgcc-file-name Display the name of the compiler's companion library.
-print-file-name=<lib> Display the full path to library <lib>.
-print-prog-name=<prog> Display the full path to compiler component <prog>.
-print-multiarch Display the target's normalized GNU triplet, used as
a component in the library path.
-print-multi-directory Display the root directory for versions of libgcc.
-print-multi-lib Display the mapping between command line options and
multiple library search directories.
 -print-multi-os-directory Display the relative path to OS libraries.
-print-sysroot Display the target libraries directory.
-print-sysroot-headers-suffix Display the sysroot suffix used to find headers.
-Wa,<options> Pass comma-separated <options> on to the assembler.
-Wp,<options> Pass comma-separated <options> on to the preprocessor
.
-Wl,<options> Pass comma-separated <options> on to the linker.
-Xassembler <arg> Pass <arg> on to the assembler.
-Xpreprocessor <arg> Pass <arg> on to the preprocessor.
-Xlinker <arg> Pass <arg> on to the linker.
-save-temps Do not delete intermediate files.
-save-temps=<arg> Do not delete intermediate files.
-no-canonical-prefixes Do not canonicalize paths when building relative
localhost:~# python --help
usage: python [option] ... [-c cmd | -m mod | file | -] [arg] ...
Options and arguments (and corresponding environment variables):
-b : issue warnings about comparing bytearray with unicode
(-bb: issue errors)
-B : don't write .py[co] files on import; also PYTHONDONTWRITEBYTECODE=x
-c cmd : program passed in as string (terminates option list)
-d : debug output from parser; also PYTHONDEBUG=x
-E : ignore PYTHON* environment variables (such as PYTHONPATH)
-h : print this help message and exit (also --help)
-i : inspect interactively after running script; forces a prompt even
if stdin does not appear to be a terminal; also PYTHONINSPECT=x
-m mod : run library module as a script (terminates option list)
-O : optimize generated bytecode slightly; also PYTHONOPTIMIZE=x
-OO : remove doc-strings in addition to the -O optimizations
-R : use a pseudo-random salt to make hash() values of various types be
unpredictable between separate invocations of the interpreter, as
a defense against denial-of-service attacks
-Q arg : division options: -Qold (default), -Qwarn, -Qwarnall, -Qnew
-s : don't add user site directory to sys.path; also PYTHONNOUSERSITE
-S : don't imply 'import site' on initialization
-t : issue warnings about inconsistent tab usage (-tt: issue errors)
-u : unbuffered binary stdout and stderr; also PYTHONUNBUFFERED=x
see man page for details on internal buffering relating to '-u'
-v : verbose (trace import statements); also PYTHONVERBOSE=x
can be supplied multiple times to increase verbosity
-V : print the Python version number and exit (also --version)
-W arg : warning control; arg is action:message:category:module:lineno
also PYTHONWARNINGS=arg
-x : skip first line of source, allowing use of non-Unix forms of #!cmd
-3 : warn about Python 3.x incompatibilities that 2to3 cannot trivially fix
file : program read from script file
 - : program read from stdin (default; interactive mode if a tty)
arg ...: arguments passed to program in sys.argv[1:]

Other environment variables:

PYTHONSTARTUP: file executed on interactive startup (no default)
PYTHONPATH : ':'-separated list of directories prefixed to the
default module search path. The result is sys.path.
PYTHONHOME : alternate <prefix> directory (or <prefix>:<exec_prefix>).
The default module search path uses <prefix>/pythonX.X.
PYTHONCASEOK : ignore case in 'import' statements (Windows).
PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.
PYTHONHASHSEED: if this variable is set to 'random', the effect is the same
as specifying the -R option: a random value is used to seed the hashes of
str, bytes and datetime objects. It can also be set to an integer
in the range [0,4294967295] to get hash values with a predictable seed.

2. Saída da execución do script bench.py.

3. Captura de pantalla da execución da instrución no intérprete interactivo.

4. Responde: Compara as linguaxes C, ensamblador e Python en canto á portabilidade.

Tanto as linguaxes C como Python teñen portabilidade alta porque teñen maior independencia do
hardware da maquina, en cambio o a linguaxe ensamblador ten portabilidade baixa porque os
programas non poden ser portados de unha maquina a outra.