Date: Fri, 25 Jan 2002 11:02:35 -0800 From: "Server Admin" <dump@sherline.com> To: "Andrew Gallatin" <gallatin@cs.duke.edu>, <freebsd-ppc@freebsd.org> Subject: Re: compiler problems? Message-ID: <001401c1a5d2$d96bcb40$03e2cbd8@server> References: <15441.43775.191953.219307@grasshopper.cs.duke.edu>
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Is CRITICAL_FORK defined in the scope of that function ? I'm not familiar with the code, but I figured that might be a possibility. ___________________________________________ Jeremiah Gowdy IT Manager - Senior Network Administrator Sherline Products Inc 3235 Executive Ridge Vista CA 92083-8527 IT Dept: 760-727-9492 Sales: 1-800-541-0735 International: (760) 727-5857 Fax: (760) 727-7857 ___________________________________________ ----- Original Message ----- From: "Andrew Gallatin" <gallatin@cs.duke.edu> To: <freebsd-ppc@freebsd.org> Sent: Friday, January 25, 2002 10:59 AM Subject: compiler problems? > > I'm getting interested in powerpc, so I was trying to follow Mark's > instructions (from Oct 18th) to build a ppc kernel. I ran into the > following problems: > > - compile error: > > ../../../kern/kern_fork.c: In function `fork_exit': > ../../../kern/kern_fork.c:771: invalid lvalue in assignment > > % cat -n kern_fork.c: > <..> > 769 sched_lock.mtx_recurse = 0; > 770 td->td_critnest = 1; > 771 td->td_savecrit = CRITICAL_FORK; > <..> > > td->td_savecrit is a register_t, which works out to be an int. > How is that an invalid lvalue? Is this a problem with the cross > compiler? Is Mark's cross compiler port out of date? > > I was feeling lucky, so I commented out that line and linked a kernel > When doing so, I got the second problem: > > - multiply defined symbols for ddb_regs & bootverbose. Trivial to > fix, patch appended. I'd have committed it, but I don't want to cause > any mergework for people who might be working on something.. > > The resulting kernel traps in cpu_switch. It looks like its deref'ing > a null pointer at line 97.. I guess this is as far as we are? > > Cheers, > > Drew > > Index: include/db_machdep.h > =================================================================== > RCS file: /home/ncvs/src/sys/powerpc/include/db_machdep.h,v > retrieving revision 1.1 > diff -u -r1.1 db_machdep.h > --- include/db_machdep.h 10 Jun 2001 02:39:28 -0000 1.1 > +++ include/db_machdep.h 25 Jan 2002 18:08:30 -0000 > @@ -47,7 +47,7 @@ > u_int32_t msr; > }; > typedef struct powerpc_saved_state db_regs_t; > -db_regs_t ddb_regs; /* register state */ > +extern db_regs_t ddb_regs; /* register state */ > #define DDB_REGS (&ddb_regs) > > #define PC_REGS(regs) ((db_addr_t)(regs)->iar) > Index: powerpc/machdep.c > =================================================================== > RCS file: /home/ncvs/src/sys/powerpc/powerpc/machdep.c,v > retrieving revision 1.17 > diff -u -r1.17 machdep.c > --- powerpc/machdep.c 11 Dec 2001 23:33:43 -0000 1.17 > +++ powerpc/machdep.c 25 Jan 2002 18:10:11 -0000 > @@ -158,7 +158,7 @@ > > struct msgbuf *msgbufp = 0; > > -int bootverbose = 0, Maxmem = 0; > +int Maxmem = 0; > long dumplo; > > vm_offset_t phys_avail[10]; > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-ppc" in the body of the message > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-ppc" in the body of the message
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