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From: Richard Henderson <rth@twiddle.net>
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Date: Wed, 23 Sep 2015 12:39:45 -0700
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Subject: Re: [Qemu-devel] [PATCH v3 23/25] tcg: Emit prologue to the
 beginning of code_gen_buffer
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To: Peter Maydell <peter.maydell@linaro.org>
Cc: =?UTF-8?Q?Alex_Benn=c3=a9e?= <alex.bennee@linaro.org>, QEMU Developers <qemu-devel@nongnu.org>, Aurelien Jarno <aurelien@aurel32.net>

On 09/23/2015 12:28 PM, Peter Maydell wrote:
>> -    /* Steal room for the prologue at the end of the buffer.  This ensures
>> -       (via the MAX_CODE_GEN_BUFFER_SIZE limits above) that direct branches
>> -       from TB's to the prologue are going to be in range.  It also means
>> -       that we don't need to mark (additional) portions of the data segment
>> -       as executable.  */
> 
> I take it we don't have any annoying targets with branch-forwards
> ranges larger than their branch-backwards ranges...

No, thankfully.


r~