From: David Gibson <david@gibson.dropbear.id.au>
To: Alexander Graf <agraf@suse.de>
Cc: qemu-ppc@nongnu.org, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [Qemu-ppc] [PATCH 2/4] target-ppc: Extend FPU state for newer POWER CPUs
Date: Tue, 9 Oct 2012 23:50:33 +1100 [thread overview]
Message-ID: <20121009125033.GC5798@truffula.fritz.box> (raw)
In-Reply-To: <ED179862-AD67-45AA-8DBB-DA0A00546311@suse.de>
On Tue, Oct 09, 2012 at 01:41:02PM +0200, Alexander Graf wrote:
> On 09.10.2012, at 13:38, Alexander Graf wrote:
> > On 09.10.2012, at 06:17, David Gibson wrote:
[snip]
> > This will still break TCG for qemu-system-ppc64, no?
>
> To be more precise:
>
> agraf@lychee:/home/agraf/release/qemu> grep -R cpu_fpscr target-ppc
> target-ppc/translate.c:static TCGv_i32 cpu_fpscr;
I did update the type of cpu_fpscr..
> target-ppc/translate.c: cpu_fpscr = tcg_global_mem_new_i32(TCG_AREG0,
> target-ppc/translate.c: tcg_gen_shri_i32(cpu_crf[crfD(ctx->opcode)], cpu_fpscr, bfa);
> target-ppc/translate.c: tcg_gen_andi_i32(cpu_fpscr, cpu_fpscr, ~(0xF << bfa));
> target-ppc/translate.c: tcg_gen_extu_i32_i64(cpu_fpr[rD(ctx->opcode)], cpu_fpscr);
> target-ppc/translate.c: tcg_gen_shri_i32(cpu_crf[1], cpu_fpscr, FPSCR_OX);
> target-ppc/translate.c: tcg_gen_shri_i32(cpu_crf[1], cpu_fpscr, FPSCR_OX);
> target-ppc/translate.c: tcg_gen_shri_i32(cpu_crf[1], cpu_fpscr, FPSCR_OX);
> target-ppc/translate.c: tcg_gen_shri_i32(cpu_crf[1], cpu_fpscr, FPSCR_OX);
>
> All those functions assume cpu_fpscr is a TCGv32. They need to be
> adjusted to work on tl instead.
But I didn't spot the type dependent calls. I figured type checking
would catch that sort of thing, but apparently not.
> Please test compile your code with configure --enable-tcg-debug.
Ok, will do.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
next prev parent reply other threads:[~2012-10-09 12:58 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-09 4:17 [Qemu-devel] [0/4] Pending ppc and pseries patches David Gibson
2012-10-09 4:17 ` [Qemu-devel] [PATCH 1/4] pseries: Don't allow duplicate registration of hcalls or RTAS calls David Gibson
2012-10-09 4:17 ` [Qemu-devel] [PATCH 2/4] target-ppc: Extend FPU state for newer POWER CPUs David Gibson
2012-10-09 11:38 ` Alexander Graf
2012-10-09 11:41 ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
2012-10-09 12:50 ` David Gibson [this message]
2012-10-09 15:03 ` Alexander Graf
2012-10-09 4:17 ` [Qemu-devel] [PATCH 3/4] target-ppc: Rework storage of VPA registration state David Gibson
2012-10-09 4:17 ` [Qemu-devel] [PATCH 4/4] pseries: Implement qemu initiated shutdowns using EPOW events David Gibson
2012-10-13 8:39 ` Blue Swirl
2012-10-09 11:44 ` [Qemu-devel] [0/4] Pending ppc and pseries patches Alexander Graf
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