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Re: [Qemu-devel] [PATCH v2] target/s390x: Add support for the TEST BLOCK
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From: |
Aurelien Jarno |
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Subject: |
Re: [Qemu-devel] [PATCH v2] target/s390x: Add support for the TEST BLOCK instruction |
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Date: |
Thu, 18 May 2017 20:56:41 +0200 |
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User-agent: |
NeoMutt/20170113 (1.7.2) |
On 2017-05-18 08:42, Richard Henderson wrote:
> On 05/18/2017 06:20 AM, Aurelien Jarno wrote:
> > > +DEF_HELPER_FLAGS_2(testblock, TCG_CALL_NO_WG, i32, env, i64)
> > As the helper does not read any values from the global, you can even use
> > TCG_CALL_NO_RWG.
> >
>
> By throwing an exception, we imply a read of all values along the exception
> path.
>
You are indeed correct, sorry about the wrong comment.
--
Aurelien Jarno GPG: 4096R/1DDD8C9B
address@hidden http://www.aurel32.net