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Re: [PATCH] target: i386: Check float overflow about register stack
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From: |
Paolo Bonzini |
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Subject: |
Re: [PATCH] target: i386: Check float overflow about register stack |
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Date: |
Sat, 22 Feb 2020 08:37:08 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.1 |
On 22/02/20 03:10, Chen Gang wrote:
> Set C1 to 1 if stack overflow occurred; set to 0 otherwise".
>
> In helper_fxam_ST0, I guess, we need "env->fpus |= 0x200" (but I don't
> know wheter it will be conflict with SIGND(temp)). And we have to still
> need foverflow, because all env->fptags being 0 doesn't mean overflow.
No, you need to add "env->fpus |= 0x200" and "env->fpus &= ~0x200"
directly to fpush, fpop, etc.
Polo
- [PATCH] target: i386: Check float overflow about register stack, chengang, 2020/02/20
- Re: [PATCH] target: i386: Check float overflow about register stack, Paolo Bonzini, 2020/02/21
- Re: [PATCH] target: i386: Check float overflow about register stack, Chen Gang, 2020/02/21
- Re: [PATCH] target: i386: Check float overflow about register stack, Paolo Bonzini, 2020/02/21
- Re: [PATCH] target: i386: Check float overflow about register stack, Chen Gang, 2020/02/21
- Re: [PATCH] target: i386: Check float overflow about register stack, Chen Gang, 2020/02/21
- Re: [PATCH] target: i386: Check float overflow about register stack,
Paolo Bonzini <=
- Re: [PATCH] target: i386: Check float overflow about register stack, Chen Gang, 2020/02/22
- Re: [PATCH] target: i386: Check float overflow about register stack, Paolo Bonzini, 2020/02/24
- Re: [PATCH] target: i386: Check float overflow about register stack, Chen Gang, 2020/02/24