Newsgroups: comp.os.linux.development Path: gmd.de!xlink.net!howland.reston.ans.net!usc!elroy.jpl.nasa.gov! newncar!csn!hellgate.utah.edu!sunset.cs.utah.edu!tevans From: tevans%sunset.cs.utah....@cs.utah.edu (Terry Evans) Subject: SVR4 binary support? Date: 2 Feb 94 18:15:34 MST Message-ID: <1994Feb2.181536.11001@hellgate.utah.edu> X-Newsreader: TIN [version 1.2 PL1] Lines: 27 I just have a couple of questions concerning the state of being able to run SVR4 binaries under linux. What I mean by that are programs that report "ELF 32-bit LSB executable 80386 Version 1" with the file command. A month (probably two) ago I got some of the latest stuff (libabi, kernel level 14?, etc.). Under that particular configuration I was able to run the program "dc" from my AT&T based UNIX box at work. I just recently reinstalled Slackware 1.1.1 and got kernel level 14x and the ibsc patches from the ALPHA directory. Now when I try to run the same "dc" program all I get is a segmentation violation. So, my questions finally are: What libraries (if any) do I need in order to try to see if some of my SVR4 binaries will work? Do I need the libabi stuff again since I no longer have it? If I need the libabi stuff could somebody inform me of where to find it at? I can't remember where I picked it up the last time. What can I do to help the project along? Thanks! Terry tev...@cs.utha.edu
Newsgroups: comp.os.linux.development Path: gmd.de!xlink.net!howland.reston.ans.net!news.cac.psu.edu! news.pop.psu.edu!ra!tantalus.nrl.navy.mil!eric From: e...@tantalus.nrl.navy.mil (Eric Youngdale) Subject: Re: SVR4 binary support? Message-ID: <CKnHB0.B4p@ra.nrl.navy.mil> Sender: use...@ra.nrl.navy.mil Organization: Naval Research Laboratory References: <1994Feb2.181536.11001@hellgate.utah.edu> Date: Thu, 3 Feb 1994 13:25:47 GMT Lines: 58 In article <1994Feb2.181536.11...@hellgate.utah.edu> tevans%sunset.cs.utah....@cs.utah.edu (Terry Evans) writes: > I just have a couple of questions concerning the state of being able to >run SVR4 binaries under linux. What I mean by that are programs that report >"ELF 32-bit LSB executable 80386 Version 1" with the file command. > > A month (probably two) ago I got some of the latest stuff (libabi, kernel >level 14?, etc.). Under that particular configuration I was able to run >the program "dc" from my AT&T based UNIX box at work. > > I just recently reinstalled Slackware 1.1.1 and got kernel level 14x >and the ibsc patches from the ALPHA directory. Now when I try to run the >same "dc" program all I get is a segmentation violation. This does not surprise me. > So, my questions finally are: > > What libraries (if any) do I need in order to try to see if some of my >SVR4 binaries will work? Do I need the libabi stuff again since I no longer >have it? The libabi stuff was a gross hack that is unworthy of further support. (I should point out that with libabi, you do not need the ibcs2 emulation stuff). The basic problem that you are having is that newer versions of libc have changed the FILE struct quite a bit, and this broke the libabi. In theory it should not be too tough to fix, and if someone else want to try, feel free. I have patched my kernel so that it can use an ELF format program interpreter, and I am in the process of figuring out how to bootstrap it. Interesting problem (how do you dynamicly link the dynamic linker, when you need to run the dynamic linker to dynamicly link itself). Part of the problem is that you do not want to completely dynamicly link the thing because the application itself might replace certain functions in the shared library, and thus I have it fixed to initially only link symbols that start with a "_". I have things fixed so that the interpreter and the application are properly loaded, and I am now working on loading additional shared libraries. This program loader is part of a libc that Al Longyear wrote mainly for the COFF support. It happens to fit my needs as well, so we have both been working on it. > If I need the libabi stuff could somebody inform me of where to find >it at? I can't remember where I picked it up the last time. > > What can I do to help the project along? Oh, well, now this is different :-). My hope is that in a week or two I will have my dynamic linker stuff done, and I will have something ready for people to try. The lack of support for shared libraries in the GNU utilities means that all of the development now has to take place under SVr4 :-(. Anyway once something is done, I will ultimately need some testers who can give the libc and dynamic linker a run for the money. -Eric -- "The woods are lovely, dark and deep. But I have promises to keep, And lines to code before I sleep, And lines to code before I sleep."