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Re: [Qemu-devel] [PATCH 24/26] target-xtensa: implement accurate window


From: Richard Henderson
Subject: Re: [Qemu-devel] [PATCH 24/26] target-xtensa: implement accurate window check
Date: Fri, 20 May 2011 08:58:20 -0700
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110428 Fedora/3.1.10-1.fc14 Thunderbird/3.1.10

On 05/17/2011 03:32 PM, Max Filippov wrote:
> +static void gen_window_check1(DisasContext *dc, unsigned r1)
> +{
> +    if (option_enabled(dc, XTENSA_OPTION_WINDOWED_REGISTER) &&
> +            r1 / 4 > dc->used_window) {
> +        TCGv_i32 pc = tcg_const_i32(dc->pc);
> +        TCGv_i32 w = tcg_const_i32(r1 / 4);
> +
> +        gen_advance_ccount(dc);
> +        gen_helper_window_check(pc, w);
> +
> +        tcg_temp_free(w);
> +        tcg_temp_free(pc);
> +    }

dc->used_window is never set to non-zero.  I assume you meant
to do that here?



r~



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