Carlos O'Donell

@techokami@woof.tech @neal@social.gompa.me First the manual: https://sourceware.org/binutils/docs/as/Macro.html second "Mastering Gas" https://simplifycpp.org/books/Assembly/Mastering_GAS_A_Complete_Guide_to_the_GNU_Assembler.pdf (a whopping 534 pages). Good luck!

@techokami@woof.tech @neal@social.gompa.me Right, GNU Binutils, and the assembler "gas" can assemble m68k (several flavours) and z80, and has a full macro language, but the syntax is distinct. It's work and probably the reason why nasm, and yasm are still around.

Hot take: All computer programmers should learn rhetorical analysis. Computer programming is philosophy for hardware. It can take any shape, but certain structures yield indelible advantages over time.

Someone said "It's mentors all the way down." and made my day 😃

If you use RTLD_DEEPBIND you can create a nested lookup scope, and in that scope you can define your own allocator and bind locally to it... but if you leak pointers from that allocator to another scope, say via function return, it results in undefined behaviour when you try to free the pointer in a scope where it was not allocated. glibc lets you do this because it is the semantics of RTLD_DEEPBIND. This is a non-modular feature and because of these semantics it is incompatible with ASAN.

Where did my file go?! git stash apply. Oh right :/

My father assures me that when he studied engineering in Argentina the exams were oral, his instructors were German, and it was all in front of the class and public. He notes that it was structurally impossible to cheat in such a venue except by clever falsification of physical identity. Which apparently happened once or twice, but the class usually had a good laugh at that.

"The GNU libc atanh is correctly rounded." (https://inria.hal.science/hal-05591661) That simple phrase is so exceedingly hard to prove, and yet we chase the goal because some workloads require it and we can achieve this goal in some cases without worst case performance loss. For glibc 2.43 the project has integrated 32 of the CORE-MATH library functions.

@bookwar@floss.social Totally. I've now twice responded this week to year old emails thinking they were new!

@bookwar@floss.social ... I agree, the tiny arrow for date direction isn't great. What kind of UX indicator could they use? Click and hold on the drag bar shows hovering month names that group the emails? That would let you see quickly the direction?

@andrewnez@mastodon.social I was talking with a colleague of mine about your analysis and he noted "Carcinisation?" 😆

Linux system calls are not full memory barriers, and so while data in buffers written via writev() or sendto() may be synchronized between threads, that random memory increment for a global might not be, and you still need synchronization for that. Hardware being what it is today you might not see the problem because the syscall masks the issue.