Date: Mon, 26 Jan 2004 00:09:14 -0500 From: Ken Smith <kensmith@cse.Buffalo.EDU> To: Harti Brandt <brandt@fokus.fraunhofer.de> Cc: freebsd-sparc64@freebsd.org Subject: Re: fix for undefined symbol 'panic' Message-ID: <20040126050914.GB4242@electra.cse.Buffalo.EDU> In-Reply-To: <20040125174359.C18713@beagle.fokus.fraunhofer.de> References: <6.0.1.1.2.20040124173355.027d4508@mail.firetide.com> <20040125055947.GA12258@electra.cse.Buffalo.EDU> <20040125155351.X18713@beagle.fokus.fraunhofer.de> <20040125163017.GA20676@electra.cse.Buffalo.EDU> <20040125174359.C18713@beagle.fokus.fraunhofer.de>
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On Sun, Jan 25, 2004 at 05:45:29PM +0100, Harti Brandt wrote:
> Go ahead. I think the arguments are passed in %o0, %o1 and %o2. I don't
> know in what order, however.
Thanks. I think this is it. With this in place the kernel compiles.
I checked it by placing a bogus use of the macro into
sys/sparc64/sparc64/swtch.S and the resulting panic message was:
panic: Test call to panic
at line 0 in file (null)
cpuid = 0;
Debugger("panic")
Stopped at Debugger+0x1c: ta %xcc, 1
db>
I don't hold much hope of getting the line number and filename right
(and I think you get the same results from the places the i386 assembly
code calls the new __panic, sys/i386/i386/swtch.s).
I sent this in to my mentor for approval, but if anyone sees anything
wrong with it let me know.
Thanks.
Index: asmacros.h
===================================================================
RCS file: /home/ncvs/src/sys/sparc64/include/asmacros.h,v
retrieving revision 1.17
diff -u -r1.17 asmacros.h
--- asmacros.h 16 Jul 2003 00:08:43 -0000 1.17
+++ asmacros.h 26 Jan 2004 04:52:24 -0000
@@ -101,8 +101,10 @@
.sect .rodata ; \
9: .asciz msg ; \
.previous ; \
- SET(9b, r1, %o0) ; \
- call panic ; \
+ SET(9b, r1, %o2) ; \
+ clr %o1 ; \
+ clr %o0 ; \
+ call __panic ; \
nop
#ifdef INVARIANTS
--
Ken Smith
- From there to here, from here to | kensmith@cse.buffalo.edu
there, funny things are everywhere. |
- Theodore Geisel |
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