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Re: [Qemu-devel] [PATCH 7/8] tcg: Sanity check deposit inputs
From: |
Aurelien Jarno |
Subject: |
Re: [Qemu-devel] [PATCH 7/8] tcg: Sanity check deposit inputs |
Date: |
Sat, 22 Sep 2012 21:52:09 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Fri, Sep 21, 2012 at 05:18:15PM -0700, Richard Henderson wrote:
> Given these are constants, checking once here means everything
> after can assume they're correct.
>
> Signed-off-by: Richard Henderson <address@hidden>
> ---
> tcg/tcg-op.h | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h
> index d2fb283..ecb1ac3 100644
> --- a/tcg/tcg-op.h
> +++ b/tcg/tcg-op.h
> @@ -2081,6 +2081,10 @@ static inline void tcg_gen_deposit_i32(TCGv_i32 ret,
> TCGv_i32 arg1,
> uint32_t mask;
> TCGv_i32 t1;
>
> + tcg_debug_assert(ofs < 32);
> + tcg_debug_assert(len <= 32);
> + tcg_debug_assert(ofs + len <= 32);
> +
> if (ofs == 0 && len == 32) {
> tcg_gen_mov_i32(ret, arg2);
> return;
> @@ -2112,6 +2116,10 @@ static inline void tcg_gen_deposit_i64(TCGv_i64 ret,
> TCGv_i64 arg1,
> uint64_t mask;
> TCGv_i64 t1;
>
> + tcg_debug_assert(ofs < 64);
> + tcg_debug_assert(len <= 64);
> + tcg_debug_assert(ofs + len <= 64);
> +
> if (ofs == 0 && len == 64) {
> tcg_gen_mov_i64(ret, arg2);
> return;
> --
> 1.7.11.4
>
Reviewed-by: Aurelien Jarno <address@hidden>
--
Aurelien Jarno GPG: 1024D/F1BCDB73
address@hidden http://www.aurel32.net
- [Qemu-devel] [PATCH 3/8] tcg: Optimize initial inputs for ori_i64, (continued)
- [Qemu-devel] [PATCH 3/8] tcg: Optimize initial inputs for ori_i64, Richard Henderson, 2012/09/21
- [Qemu-devel] [PATCH 4/8] tcg: Emit XORI as NOT for appropriate constants, Richard Henderson, 2012/09/21
- [Qemu-devel] [PATCH 5/8] tcg: Implement concat*_i64 with deposit_i64, Richard Henderson, 2012/09/21
- [Qemu-devel] [PATCH 6/8] tcg: Add tcg_debug_assert, Richard Henderson, 2012/09/21
- [Qemu-devel] [PATCH 7/8] tcg: Sanity check deposit inputs, Richard Henderson, 2012/09/21
- Re: [Qemu-devel] [PATCH 7/8] tcg: Sanity check deposit inputs,
Aurelien Jarno <=
- [Qemu-devel] [PATCH 8/8] tcg: Sanity check goto_tb input, Richard Henderson, 2012/09/21
- Re: [Qemu-devel] [PATCH 0/8] Misc tcg improvements, Aurelien Jarno, 2012/09/25