Date: Tue, 21 Oct 2014 16:15:41 -0300 From: =?UTF-8?Q?fran=C3=A7ai_s?= <romapera15@gmail.com> To: Warner Losh <imp@bsdimp.com> Cc: freebsd-drivers@freebsd.org Subject: Re: Exist university that teaches that is necessary coding in Assembly? Message-ID: <CAK_6Rwen8EsphVch57e7Dq437rzuSidwCtVjYtiZr-ZpT4TacQ@mail.gmail.com> In-Reply-To: <AE658499-8DA7-4660-BD3A-7004D524339E@bsdimp.com> References: <CAK_6RwcGdGpOX_s0u7W-cyH143Y3jXt9GdfQpwCQPsn5AR8S1A@mail.gmail.com> <AE658499-8DA7-4660-BD3A-7004D524339E@bsdimp.com>
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2014-10-21 14:34 GMT-03:00, Warner Losh <imp@bsdimp.com>: > > On Oct 21, 2014, at 10:57 AM, fran=C3=A7ai s <romapera15@gmail.com> wrote= : >> Is true that very few people write directly in Assembly? > > Yes. People do it only when necessary. And the cases where it is necessar= y > have dwindled as the compiler technology has improved over the years. > Now people usually just need to do it to access special bits of the machi= ne > that aren=E2=80=99t accessible via normal C. And even then, the trend has= been to > create inline functions callable from C that produce the right generated > code > with the users of those functions having to know or care they are in > assembler. > > There are also some rare occasions where people write directly in hex > because the op-codes aren=E2=80=99t in the assembler that they are using = and they > need that functionality. Rare, but it does happen sometimes in the deep, > machine-speicifc bowls of the kernel. > >> Exist university that teaches that is necessary coding in Assembly? > > It has been a few years since I was in school, but when I went to school, > people at the time said that assembler coding was rarely needed. That sai= d, > we had a crash course in assembler so that we could write an assembler fo= r > the VAX 11/750 running 4.2BSD as part of our course in C to teach us how > the computer worked. > > Over the years I=E2=80=99ve picked up other assemblers by reading the rel= evant > architectural > definition manuals, gas (and other) assembler documentation and through m= uch > trial > and especially error. > > Warner > > > Dear Warner, Thanks to you because you have answered the most of the questions I wanted that you to answer Please, answer this: What is the university of computer in that you studied that teaches that is necessary coding in Assembly? What are the countries in that they exist , if you can not speak the names of all countries, please tell only examples. I want to have complete knowledge about binary coding and Assembly, I do not want to learn binary coding and Assembly of the same way that the peoples the says that nobody writes directly in binary.
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