oso2k

52 ms·

1. 511.▲
   by oso2k 12y ago

   3.24.x represents a significant departure from previous v8 APIs. Specifically, the v8 team moved from what I would term, 2nd Generation VM Primitives to 3rd Generation VM Primitives, including 2nd Gen Isolates, GC changes, UTF8/ASCII
2. 512.▲
   by oso2k 12y ago

   That's not true and the v8 team's stance is pretty clear. The master branch is the only "fully supported" code base, currently at 4.2.56 [0]. Most other tagged versions going back a year or two receive best effort supp
3. 513.▲
   by oso2k 12y ago

   I think I've fixed it [0]. Ran into the issue where gcc was kindly re-aligning the stack to 16-bytes on i386 for no good reason (stack was already aligned?!?!). But that's fixed. Just hope gcc on i386 doesn't stop doing `s
4. 514.▲
   by oso2k 12y ago

   Point taken. I'll fix up the clobbers and noreturns. And you're right about me having issues with calculating envp. There's multiple examples of envp=argv+argc+1. But when I examined the stack frames, that lead to miss cal
5. 515.▲
   by oso2k 12y ago

   What do you mean 00_start.c is too hacked on x86_64? As for efficiency of _start, `objdump -d lib/00_start.o` yields ``` 0000000000000000 <_start>: 0: 48 89 e5 mov %rsp,%rbp 3: 48 8b 3c 24 mov
6. 516.▲
   by oso2k 12y ago

   Thank you.
7. 517.▲
   by oso2k 12y ago

   Yes and it also usually excludes things like macros & define'd constants.
8. 518.▲
   by oso2k 12y ago

   I'd be careful calling what I've done a libc. It's really just a little bit of startup code, and syscall for i386 & x86_64.
9. 519.▲
   by oso2k 12y ago

   Thanks for this Ryan. I'll reference this gist too. I remember starting with something like this early on (w/o your sysdef) but wanted argc, argv, envp and to separate syscall* from the startup code. Part of the reason I've
10. 520.▲
    by oso2k 12y ago

    That is very cool. That source public anywhere?
11. 521.▲
    by oso2k 12y ago

    My eventual goal is to rewrite asmutils'[0] httpd [1] in C using librt0 and get a binary about 2-3x in size (2-3K). Malloc unnecessary. [0] http://asm.sourceforge.net/asmutils.html [1] https://github.com&#x
12. 522.▲
    Show HN: A minimal C runtime for Linux i386 and x86_64 in 87 SLOC of C(github.com)

    172 points by oso2k 12y ago|54 comments
13. 523.▲
    by oso2k 12y ago

    This is cool. I've been working on something similar[0]. It only takes a few more lines to add some of the other useful libc/posix/sysv things. My eventual goal is to rewrite asmutils'[1] httpd [2] in C and get a bina
14. 524.▲
    by oso2k 12y ago

    Besides the Asphyxia Trainers, back then there was also HelpPC [0], PCGPE [1], RBIL [2], and mammon_'s work in ASM Journal [3] available on BBSes and early interwebs. [0] http://stanislavs.org/helppc/ [1] http:&#
15. 525.▲
    by oso2k 12y ago

    Judaism has and always will be a religion and not an ethnicity or race.
16. 526.▲
    by oso2k 12y ago

    So a Mill CPU can never do shared-memory process parallelization? Two or more processes accessing the same memory could be a hazard. Seems like it would suffer the same issue IA-64 has with parallelism. However, the conveyor belt analogy
17. 527.▲
    by oso2k 12y ago

    I honestly believe it was a malevolent attempt by Joyent to oust Ben for joining StrongLoop.
18. 528.▲
    by oso2k 12y ago

    Don't quote me, but, I believe the expectation was that when you linked to it, you would be linking with "luv". Hence cc -luv myapp.o -o myapp This is intended to be much like the effect of GNU libiberty [0] (cc -liberty mya
19. 529.▲
    by oso2k 12y ago

    Protip: It's not a protip if it's advice about making protips.
20. 530.▲
    by oso2k 12y ago

    Did it seem bad a year ago? 2? 3? It's always been that way. 3 years ago, when ry was still on the project, it was only 30 days delta [0][1]. Joyent has chosen to increase the Technical Debt in order to increase overall Node Stabili
21. 531.▲
    by oso2k 12y ago

    Again, you're missing the point. Mac's are built for workstation style development. The distributed, shared infrastructure that's en vogue today isn't a factor if you're building iOS & OSX apps. And, if you d
22. 532.▲
    by oso2k 12y ago

    Apple has never been shy that "developer" Macs are the MacPros. The fact that you can get a reasonable developer experience on a Mac Mini or an iMac the last few years has been coincidental.
23. 533.▲
    by oso2k 12y ago

    I would guess you would also cringe when some asks you for a Kleenex (facial tissue), or your daughter asks for her Barbie (doll), or son asks for his Teddy Bear (stuffed animal)...
24. 534.▲
    by oso2k 12y ago

    I believe it's more like ES3/ES5-ish. Latest/full spec isn't necessary for embedded work.
25. 535.▲
    by oso2k 12y ago

    Wouldn't returning the passed memory block through the return fix the optimization issue?
26. 536.▲
    by oso2k 12y ago

    Backblaze [0] not doing it for you? Or are you running Linux? [0] https://www.backblaze.com/
27. 537.▲
    by oso2k 12y ago

    Bjarne has always maintained that C++ is (mostly) backwards compatible with C. And that's what most people mean by C/C++.
28. 538.▲
    by oso2k 12y ago

    According to the Chrome guys...it isn't a thing [0][1], and I tend to agree. They've kept up, and often exceeded FF, IMO, for real code by making a better JIT compiler. They still haven't implemented asm.js and yet their &q
29. 539.▲
    by oso2k 12y ago

    I've heard many research scientists say, "Science is what I'm doing when I don't know what I'm doing."
30. 540.▲
    by oso2k 12y ago

    Not broken, per se. Rdtsc counts instruction cycles. It's not an accurate indication of time when the clock rate is variable (and in fact pausible).