On Fri, 21 Jun 2024, YunQiang Su wrote:
> > Then GCC emits the wrong trap instruction, wherever it comes from and
> > whatever has caused it. The correct ones for integer division by zero
>
> Thanks so much. It is not the bug of Linux kernel or GCC.
> It is a bug of me ;) and qemu.
>
> Qemu di
>
> Then GCC emits the wrong trap instruction, wherever it comes from and
> whatever has caused it. The correct ones for integer division by zero
Thanks so much. It is not the bug of Linux kernel or GCC.
It is a bug of me ;) and qemu.
Qemu didn't pass the code of TEQ correctly; and I haven't ru
On Thu, 20 Jun 2024, Richard Biener wrote:
> > > The DIV instructions of MIPS won't be trapped themself if the divisor
> > > is zero. The compiler will emit a conditional trap instruct for it.
> > > So the signal will be SIGTRAP instead of SIGFPE.
> >
> > It's an OS kernel bug if you get SIGTRAP
On Thu, Jun 20, 2024 at 12:57 PM Maciej W. Rozycki wrote:
>
> On Thu, 20 Jun 2024, YunQiang Su wrote:
>
> > The DIV instructions of MIPS won't be trapped themself if the divisor
> > is zero. The compiler will emit a conditional trap instruct for it.
> > So the signal will be SIGTRAP instead of SI
On Thu, 20 Jun 2024, YunQiang Su wrote:
> The DIV instructions of MIPS won't be trapped themself if the divisor
> is zero. The compiler will emit a conditional trap instruct for it.
> So the signal will be SIGTRAP instead of SIGFPE.
It's an OS kernel bug if you get SIGTRAP for integer division
