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Date: Fri, 10 Apr 2009 06:54:49 +0400 (MSD)
From: malc <av1474@comtv.ru>
Subject: Re: [Qemu-devel] Next stable release
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To: qemu-devel@nongnu.org

On Thu, 9 Apr 2009, TeLeMan wrote:

> 
> 
> malc-4 wrote:
> > 
> > On Mon, 6 Apr 2009, TeLeMan wrote:
> > 
> >> 
> >> I hope you can fix the following bugs in the next release:
> >> 
> >> http://www.nabble.com/-PATCH--i386-hard-interrupt-generation-bug-fix-p14921171.html
> >> http://www.nabble.com/MAX_OP_PER_INSTR-should-be-larger-tt22573338.html
> >> 
> > 
> > You should retry with the current QEMU, immediate ro[lr]s should produce a
> > lot less tcg ops currently.
> > 
> > -- 
> > mailto:av1474@comtv.ru
> > 
> > 
> > 
> > 
> 
> It is not fixed yet.
> 

[..snip..]

Omitting dump before liveness analysis...

> 
>  ---- 0x4468c0
>  ld_i32 loc24,env,$0x18
>  nopn $0x3,$0x0,$0x3
>  movi_i32 loc25,$0x0
>  nopn $0x2,$0x2
>  nopn $0x2,$0x2
>  movi_i32 tmp32,$0xe
>  shl_i32 tmp30,loc25,tmp32
>  nopn $0x2,$0x2
>  nopn $0x3,$0x21,$0x3
>  movi_i32 tmp32,$0x12
>  shr_i32 tmp14,loc24,tmp32
>  or_i32 tmp14,tmp14,tmp30
>  nopn $0x2,$0x2
>  nopn $0x2,$0x2
>  nopn $0x3,$0x20,$0x3
>  movi_i32 tmp32,$0xe
>  shl_i32 tmp30,loc24,tmp32
>  nopn $0x2,$0x2
>  nopn $0x3,$0x21,$0x3
>  nopn $0x3,$0x21,$0x3
>  mov_i32 loc24,tmp30
>  or_i32 loc24,loc24,tmp14
>  nopn $0x3,$0x21,$0x3
>  st_i32 loc24,env,$0x18
>  movi_i32 tmp8,$0x0
>  nopn $0x2,$0x2
>  st_i32 tmp8,env,$0x1c
>  nopn $0x2,$0x2
>  nopn $0x2,$0x2
>  nopn $0x6,$0x14,$0x1,$0x26,$0x10,$0x6
>  nopn $0x2,$0x2
>  nopn $0x2,$0x2
>  nopn $0x2,$0x2
>  nopn $0x3,$0x2,$0x3
>  nopn $0x3,$0x22,$0x3
>  nopn $0x3,$0x23,$0x3
>  nopn $0x2,$0x2
>  nopn $0x3,$0x11,$0x3
>  nopn $0x2,$0x2
>  nopn $0x3,$0x11,$0x3
>  nopn $0x2,$0x2
>  nopn $0x3,$0x10,$0x3
>  nopn $0x3,$0x10,$0x3
>  nopn $0x2,$0x2
>  nopn $0x2,$0x2
>  nopn $0x3,$0x10,$0x3
>  nopn $0x2,$0x2
>  nopn $0x3,$0x2,$0x3
>  nopn $0x3,$0x3,$0x3
>  nopn $0x2,$0x2
>  nopn $0x3,$0x21,$0x3
>  nopn $0x2,$0x2
>  nopn $0x3,$0x21,$0x3
>  nopn $0x2,$0x2
>  nopn $0x3,$0x20,$0x3
>  nopn $0x3,$0x20,$0x3
>  nopn $0x2,$0x2
>  nopn $0x2,$0x2
>  nopn $0x3,$0x20,$0x3
>  nopn $0x2,$0x2
>  nopn $0x3,$0x2,$0x3
>  nopn $0x3,$0x3,$0x3
>  discard cc_dst_0
>  discard cc_dst_1
>  nopn $0x2,$0x2

As you can see above most of the stuff was turned into nops by
la.. So...

[..snip..]

> 
> 65 ops were translated at 0x4468c0 or 0x4468c3. 
> 71 ops were translated at the last instruction(0x4468eb).

> Another question: Who can ensure no other instructions like this? just by
> testing?
> 

-- 
mailto:av1474@comtv.ru