Asm-declaration – Embed assembly language code within a C++ program (2017) • Hacker News Board

Asm-declaration – Embed assembly language code within a C++ program (2017)

#1

Post by ____Sash---701_ » Fri, Jul 26, 2019, 11:16 AM UTC

Asm-declaration – Embed assembly language code within a C++ program (2017)
en.cppreference.com

Re: Asm-declaration – Embed assembly language code within a C++ program (2017)

#2

Post by mbel » Fri, Jul 26, 2019, 12:43 PM UTC

Old, well-known feature of one of the most popular languages. I must be missing something, because I have no idea how this became a hacker "news" :)

Re: Asm-declaration – Embed assembly language code within a C++ program (2017)

#3

Post by haberman » Fri, Jul 26, 2019, 12:44 PM UTC

I don't see anything on that page referencing C++20. Am I missing something?

On a related note, I always find the official docs for GCC inline assembly are insufficient for figuring out what I am trying to do. I nearly always have to resort to dumb trial and error. I was just recently planning to write some docs of my own on the subject. Not tutorial docs, but reference docs.

Re: Asm-declaration – Embed assembly language code within a C++ program (2017)

#4

Post by bregma » Fri, Jul 26, 2019, 12:58 PM UTC

Odd bit of news reporting on something that was part of a standard published in 1997. What's next, breaking news on a standard 7-bit code used by Americans for information interchange?

Re: Asm-declaration – Embed assembly language code within a C++ program (2017)

#5

Post by mud_dauber » Fri, Jul 26, 2019, 1:04 PM UTC

I was a Forth dev a long time ago (on a planet far away...). Switching to & from assembly seemed as natural as breathing. Oh for the days of 16bit cores and minuscule register banks.

Re: Asm-declaration – Embed assembly language code within a C++ program (2017)

#6

Post by clouddrover » Fri, Jul 26, 2019, 1:07 PM UTC

Lots of languages have inline assembly. Pascal does:

- Free Pascal: https://www.freepascal.org/docs-html/prog/progch3.html#progs...

- Delphi: http://docwiki.embarcadero.com/RADStudio/Rio/en/Inline_Assem...

You can even do assembly in batch files via Debug if you really want to:

https://thestarman.pcministry.com/asm/debug/debug2.htm

https://www.robvanderwoude.com/debug.php

Re: Asm-declaration – Embed assembly language code within a C++ program (2017)

#7

Post by lawlessone » Fri, Jul 26, 2019, 1:10 PM UTC

did this in college over 10 years ago..

Re: Asm-declaration – Embed assembly language code within a C++ program (2017)

#8

Post by bla3 » Fri, Jul 26, 2019, 1:11 PM UTC

Maybe what's new here is the suggestion of using a raw string literal for the assembly source? That does look neat (if minor).

Re: Asm-declaration – Embed assembly language code within a C++ program (2017)

#9

Post by tyingq » Fri, Jul 26, 2019, 1:17 PM UTC

clouddrover wrote: post #6

Lots of languages have inline assembly. Pascal does: - Free Pascal: https://www.freepascal.org/docs-html/prog/progch3.html#progs... - Delphi: http://docwiki.embarcadero.com/RADStudio/Rio/en/Inline_Assem... You can even do assembly in batch files via Debug if you really want to: https://thestarman.pcministry.com/asm/debug/debug2.htm https://www.robvanderwoude.com/debug.php

Perl's Inline::ASM is pretty neat. https://metacpan.org/pod/distribution/Inline-ASM/ASM.pod

Re: Asm-declaration – Embed assembly language code within a C++ program (2017)

#10

Post by mhh__ » Fri, Jul 26, 2019, 1:23 PM UTC

clouddrover wrote: post #6

Lots of languages have inline assembly. Pascal does: - Free Pascal: https://www.freepascal.org/docs-html/prog/progch3.html#progs... - Delphi: http://docwiki.embarcadero.com/RADStudio/Rio/en/Inline_Assem... You can even do assembly in batch files via Debug if you really want to: https://thestarman.pcministry.com/asm/debug/debug2.htm https://www.robvanderwoude.com/debug.php

D has a very nice inline assembler (assuming you're on a supporter platform, if not then you get to use the standard gnu style)