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Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes
From: |
Richard Henderson |
Subject: |
Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes |
Date: |
Wed, 26 Jun 2019 09:45:36 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 |
On 6/25/19 7:55 PM, Mark Cave-Ayland wrote:
> And here's where we are blowing up according to -d in_asm,op_out_asm:
>
> IN:
> 0x00f22ca0: 101ffc84 vor v0, v31, v31
>
> OP:
> ld_i32 tmp0,env,$0xfffffff8
> movi_i32 tmp1,$0x0
> brcond_i32 tmp0,tmp1,lt,$L0
>
> ---- 00f22ca0
> ld_vec v128,e8,tmp2,env,$0xd6b0
> st_vec v128,e8,tmp2,env,$0xd4c0
Yep, that looks right.
As an aside, this does suggest to me that target/ppc might be well served in
moving the ppc_vsr_t members of CPUPPCState earlier, so that this offset is
smaller.
> movi_i32 nip,$0xf22ca4
> movi_i32 nip,$0xf22ca4
> movi_i32 tmp0,$0x10002
> call raise_exception,$0x2,$0,env,tmp0
And this, presumably is the single-step debug exception.
> 0xa4e7f12c: 3c400000 lis r2, 0
> 0xa4e7f130: 6042d6b0 ori r2, r2, 0xd6b0
> 0xa4e7f134: 7c5b10ce lvx v2, r27, r2
> 0xa4e7f138: 3c400000 lis r2, 0
> 0xa4e7f13c: 6042d4c0 ori r2, r2, 0xd4c0
> 0xa4e7f140: 7c5b11ce stvx v2, r27, r2
These also look correct. Form an offset into r2, load or store from env+r2.
This also shows what I mention above re offset. For a ppc host, the offset is
large enough to require two instructions to form them.
> Any ideas what might be going on here?
What is the observed problem that makes you think that this is the incorrect
instruction?
r~
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Richard Henderson, 2019/06/18
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Mark Cave-Ayland, 2019/06/19
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Howard Spoelstra, 2019/06/20
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Mark Cave-Ayland, 2019/06/22
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Mark Cave-Ayland, 2019/06/22
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Aleksandar Markovic, 2019/06/23
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Richard Henderson, 2019/06/25
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Mark Cave-Ayland, 2019/06/25
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Richard Henderson, 2019/06/25
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Mark Cave-Ayland, 2019/06/25
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes,
Richard Henderson <=
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Mark Cave-Ayland, 2019/06/26
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, BALATON Zoltan, 2019/06/26
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Richard Henderson, 2019/06/26
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Mark Cave-Ayland, 2019/06/26
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, BALATON Zoltan, 2019/06/26
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Mark Cave-Ayland, 2019/06/27
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Richard Henderson, 2019/06/27
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Richard Henderson, 2019/06/27
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, Mark Cave-Ayland, 2019/06/27
- Re: [Qemu-devel] [PATCH v4 0/7] tcg/ppc: Add vector opcodes, David Gibson, 2019/06/26