Re: CVS commit: src/sys/arch/pmax/stand/common

[Antti Kantee <pooka%cs.hut.fi@localhost>]

On Thu Nov 25 2010 at 14:05:28 +0000, Izumi Tsutsui wrote:
> Module Name:  src
> Committed By: tsutsui
> Date:         Thu Nov 25 14:05:28 UTC 2010
> 
> Modified Files:
>       src/sys/arch/pmax/stand/common: startprog.S
> 
> Log Message:
> Fix botch on mips64 merge:
>  - use correct offsets to pass args to loaded kernel in __mips_o32 case
> 
> Now NetBSD/pmax kernel properly boots, but init(8) still doesn't start
> on GXemul emulating R3000 3MAX.

One remaining problem (which was debugged by Alessandro Forin) is that
the post-mips64 brk/sbrk syscall stubs depend on "syscall" retaining t0,
and the kernel doesn't do that.  I have this in my local tree and it makes
a mips1 platform boot with new userland.  See if it helps on pmax too:

--- locore_mips1.S      8 Nov 2010 18:09:38 -0000       1.68
+++ locore_mips1.S      25 Nov 2010 14:15:39 -0000
@@ -418,7 +418,7 @@ NESTED_NOPROFILE(mips1_SystemCall, CALLF
        sw      a3, FRAME_A3(k1)
        lw      a0, CPUVAR(CURLWP)              # 1st arg is curlwp
        mfhi    v1
-       #sw     t0, FRAME_T0(k1)                # no need to save temp regs
+       sw      t0, FRAME_T0(k1)                # no need to save temp regs
        #sw     t1, FRAME_T1(k1)
        #sw     t2, FRAME_T2(k1)
        #sw     t3, FRAME_T3(k1)