Date: Mon, 11 Nov 2002 14:50:13 +0100 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: alpha@FreeBSD.ORG Subject: Re: ev4/5/6 issue ? Message-ID: <54463.1037022613@critter.freebsd.dk> In-Reply-To: Your message of "Mon, 11 Nov 2002 08:44:50 EST." <15823.46162.102126.470628@grasshopper.cs.duke.edu>
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In message <15823.46162.102126.470628@grasshopper.cs.duke.edu>, Andrew Gallatin writes: > >Poul-Henning Kamp writes: > > > > I get the trap on my alphastation 255, not on beast. > >OK, that wasn't clear to me before. I thought you were saying it also >trapped on beast. > > >What instruction is causing the trap? > > > > I have no idea, gdb doesn't offer any help as far as I can see :-( > >Just disassemble the code around the faulting instruction. Either >using gdb's built-in disassembler or objdump. You do have the >faulting instruction from gdb, right? Yeah, well, gdb sort of chokes... l153# gdb /usr/bin/make [yak yak yak...] (gdb) run Starting program: /usr/bin/make warning: shared library handler failed to enable breakpoint Program received signal SIGILL, Illegal instruction. warning: Hit heuristic-fence-post without finding warning: enclosing function for address 0x12001f4e8 This warning occurs if you are debugging a function without any symbols (for example, in a stripped executable). In that case, you may wish to increase the size of the search with the `set heuristic-fence-post' command. Otherwise, you told GDB there was a function where there isn't one, or (more likely) you have encountered a bug in GDB. 0x12001f4e8 in ?? () (gdb) where #0 0x12001f4e8 in ?? () warning: Hit heuristic-fence-post without finding warning: enclosing function for address 0x120000218 (gdb) If this is an ev45/ev6 issue I guess my very naïve end-user questions are: 1. Why doesn't file(1) tell me if a binary is ev45 or ev6 ? 2. Couldn't the elf activator not find out and say "Sorry, cannot execute ev6 on this machine" ? -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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