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Re: [Qemu-devel] [Bug 1841442] Re: floating point emulation can fail to
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From: |
Alex Bennée |
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Subject: |
Re: [Qemu-devel] [Bug 1841442] Re: floating point emulation can fail to set FE_INEXACT |
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Date: |
Mon, 26 Aug 2019 17:11:35 +0100 |
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User-agent: |
mu4e 1.3.4; emacs 27.0.50 |
Richard Henderson <address@hidden> writes:
> Well, maybe yes and maybe no. What you've done is choose two targets
> whose floating point emulation have not been well maintained.
So this is a failure on the x86_64 and ppc64 frontends to correctly set
the softfloat modes when their appropriate registers are set?
>
> If I try this same test on aarch64, it passes:
>
> $ ~/a.out 0x0000000000000001
> 0x0000000000000001 0.000000
> 0x0
>
> 0x18
> FE_INEXACT FE_UNDERFLOW
> 0x0000000000000000 0.000000
>
> $ ./aarch64-linux-user/qemu-aarch64 ~/a.out 0x0000000000000001
> 0x0000000000000001 0.000000
> 0x0
>
> 0x18
> FE_INEXACT FE_UNDERFLOW
> 0x0000000000000000 0.000000
--
Alex Bennée