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Re: [Qemu-devel] [PATCH] target-sh4: get rid of CPU_{Float, Double}U
From: |
Richard Henderson |
Subject: |
Re: [Qemu-devel] [PATCH] target-sh4: get rid of CPU_{Float, Double}U |
Date: |
Mon, 11 Apr 2011 08:32:26 -0700 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.15) Gecko/20110307 Fedora/3.1.9-0.39.b3pre.fc14 Thunderbird/3.1.9 |
On 04/11/2011 08:30 AM, Peter Maydell wrote:
> On 11 April 2011 16:19, Richard Henderson <address@hidden> wrote:
>> On 04/11/2011 08:09 AM, Peter Maydell wrote:
>>> (4) I think you should be able to write a helper function for an
>>> add as just
>>> float32 HELPER(my_float_add)(float32 a, float32 b) {
>>> return float32_add(a, b, status);
>>> }
>>
>> While this is a laudable goal, this will fail for hosts that pass
>> all structures by reference. This is true of, e.g. PPC32.
>
> ...but only if float32 is a struct, which is where we came in.
> In the sane default configuration float32 is just a uint32_t
> in disguise.
Well, that's all right then. So long as we restrict ourselves
to passing around (typedefed) integers and pointers only, we'll
be ok.
r~
- [Qemu-devel] [PATCH] target-sh4: get rid of CPU_{Float,Double}U, Aurelien Jarno, 2011/04/10
- [Qemu-devel] Re: [PATCH] target-sh4: get rid of CPU_{Float, Double}U, Nathan Froyd, 2011/04/11
- [Qemu-devel] Re: [PATCH] target-sh4: get rid of CPU_{Float, Double}U, Peter Maydell, 2011/04/11
- [Qemu-devel] Re: [PATCH] target-sh4: get rid of CPU_{Float, Double}U, Aurelien Jarno, 2011/04/11
- Re: [Qemu-devel] [PATCH] target-sh4: get rid of CPU_{Float, Double}U, Richard Henderson, 2011/04/11
- Re: [Qemu-devel] Re: [PATCH] target-sh4: get rid of CPU_{Float, Double}U, Peter Maydell, 2011/04/11
- Re: [Qemu-devel] [PATCH] target-sh4: get rid of CPU_{Float, Double}U,
Richard Henderson <=