Hi Jan, You're right - after re-reading this I realize I could have been more specific.
I am working with a custom OS kernel that supports a subset of Linux syscalls. However, it does not support TLS, which on i386 I believe typically requires OS support to set up and restore the GDT and %gs segment register between context switches. My understanding is that TLS using segment registers on i386 is largely a speed and syntax optimization, but that thread specific data can be managed without it (see glibc's pthread_setspecific() api). I am currently building C programs for this OS by compiling for Linux / i386 using uClibc-ng configured to disable TLS. I'm wondering if there is a similar configuration option to build Go programs without TLS so that I can run them on my OS. Please let me know if I can clarify anything further. Thanks! On Saturday, August 1, 2020 at 2:23:13 PM UTC-4, Jan Mercl wrote: > > Not sure I understand correctly, but TLS is usually provided on some level > by the kernel of the specific OS. Another level is TLS as in, for example > pthreads. > > The Go runtime probably uses one or the other additionally to goroutine > local storage. > > Can you please clarify? > > On Sat, Aug 1, 2020, 20:08 <evan.me...@gmail.com <javascript:>> wrote: > >> Hi all, >> >> Is it possible to build pure Go (no cgo) programs targeting i386 without >> TLS support? From reviewing the compiler flags and the compiler build >> options it looks like this isn't possible, but I am hoping someone with >> knowledge on the matter can comment definitively. >> >> Thanks, >> Evan >> >> -- >> You received this message because you are subscribed to the Google Groups >> "golang-nuts" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to golan...@googlegroups.com <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/golang-nuts/630327db-52b6-47e1-b423-711719740663o%40googlegroups.com >> >> <https://groups.google.com/d/msgid/golang-nuts/630327db-52b6-47e1-b423-711719740663o%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/96d83a72-e179-4253-bd1e-b7954631e0c8o%40googlegroups.com.
