-HEAD on gxemul/MALTA is broken

[Joe Holden]

I reported this as a pr for Octeon, I'm seeing the same thing - no 
response yet though.... is MIPS ever likely to be a well supported 
platform given nobody pays attention?

Adrian Chadd wrote:
> As promised:
> 
> [adrian at lucy ~]$ gxemul -e malta -d
> i:/home/adrian/work/freebsd/svn/mfsroot-rspro.img -C 4Kc
> /tftpboot/kernel.MALTA
> GXemul 0.6.0    Copyright (C) 2003-2010  Anders Gavare
> Read the source code and/or documentation for other Copyright messages.
> 
> Simple setup...
>     net:
>         simulated network: 10.0.0.0/8 (max outgoing: TCP=100, UDP=100)
>         simulated gateway+nameserver: 10.0.0.254 (60:50:40:30:20:10)
>         simulated nameserver uses real nameserver 10.11.0.2
>     machine:
>         memory: 128 MB
>         cpu0: 4Kc (I+D = 16+16 KB)
>         machine: MALTA (evbmips, little endian) (33.00 MHz)
>         bootstring: kernel.MALTA
>         diskimage: /home/adrian/work/freebsd/svn/mfsroot-rspro.img
>             IDE DISK id 0, read-only, 17 MB (35768 sectors)
>         loading /tftpboot/kernel.MALTA
>         cpu0: starting at 0x80100100 (gp=0x804d42c0)
> 
> NOTE: This is a LEGACY emulation mode.
> 
> -------------------------------------------------------------------------------
> 
> entry: platform_start()
> cmd line: kernel.MALTA
> envp:
>         baseboardserial = 0000000000
>         bootprot = tftp
>         bootserport = tty0
>         bootserver = 10.0.0.254
>         ethaddr = 10.20.30.00.00.10
>         gateway = 10.0.0.254
>         ipaddr = 10.0.0.1
>         memsize = 0x08000000
>         modetty0 = 38400,n,8,1,none
>         modetty1 = 38400,n,8,1,none
>         prompt = YAMON
>         yamonrev = 02.06
>         subnetmask = 255.0.0.0
>         khz = 33000
> memsize = 08000000
> Cache info:
>   picache_stride    = 4096
>   picache_loopcount = 4
>   pdcache_stride    = 4096
>   pdcache_loopcount = 4
> cpu0: MIPS Technologies processor v1.128
>   MMU: Standard TLB, 16 entries
>   L1 i-cache: 2 ways of 512 sets, 16 bytes per line
>   L1 d-cache: 2 ways of 512 sets, 16 bytes per line
>   Config1=0x1ed96c81<FPU>
> Physical memory chunk(s):
> 0x4f0000 - 0x7ffffff, 129040384 bytes (31504 pages)
> Maxmem is 0x8000000
> KDB: debugger backends: ddb
> KDB: current backend: ddb
> Copyright (c) 1992-2013 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
>         The Regents of the University of California. All rights reserved.
> FreeBSD is a registered trademark of The FreeBSD Foundation.
> FreeBSD 10.0-CURRENT #0 r249569M: Wed Dec 31 16:00:00 PST 1969
>     adrian at dummy:/home/adrian/work/freebsd/svn/obj/mipsel/mips.mipsel/usr/home/adrian/work/freebsd/svn/src/sys/MALTA
> mips
> gcc version 4.2.1 20070831 patched [FreeBSD]
> [ warning: LOW reference: vaddr=0x00000000, exception TLBL,
> pc=0x8020f024 <init_dynamic_kenv+0x3c> ]
> Trap cause = 2 (TLB miss (load or instr. fetch) - kernel mode)
> [ thread pid 0 tid 0 ]
> Stopped at      0x8020f024:     lb      v0,0(s2)
> db>
> 
> I'll get cross-build gdb up in a sec and see if I can get this working..
> 
> 
> 
> Adrian
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