On 08/25/2016 05:05 AM, Alexey Brodkin wrote:
> Hi Liav,
>
> On Wed, 2016-08-17 at 09:23 +0300, Liav Rehana wrote:
>> From: Liav Rehana
>>
>> User mode callee regs are explicitly collected before signal delivery
>> or breakpoint trap. r25 is special for kernel as it serves as task
>> pointer, so u
Hi Liav,
On Wed, 2016-08-17 at 09:23 +0300, Liav Rehana wrote:
> From: Liav Rehana
>
> User mode callee regs are explicitly collected before signal delivery
> or breakpoint trap. r25 is special for kernel as it serves as task
> pointer, so user mode value is clobbered very early. It is saved in
On 08/16/2016 11:24 PM, Liav Rehana wrote:
> From: Liav Rehana
>
> User mode callee regs are explicitly collected before signal delivery
> or breakpoint trap. r25 is special for kernel as it serves as task
> pointer, so user mode value is clobbered very early. It is saved in
> pt_regs where genera
From: Liav Rehana
User mode callee regs are explicitly collected before signal delivery
or breakpoint trap. r25 is special for kernel as it serves as task
pointer, so user mode value is clobbered very early. It is saved in
pt_regs where generally only scratch (caller saved) res are saved.
The cod
On 08/16/2016 06:15 AM, Alexey Brodkin wrote:
> Hi Liav,
>
> On Tue, 2016-08-16 at 10:55 +0300, Liav Rehana wrote:
>> From: Liav Rehana
>>
>> The instruction ld.as takes as operands a base address and an offset,
>> and doesn't access the sum of these two, but the sum of the base
>> address and a
Hi Liav,
On Tue, 2016-08-16 at 10:55 +0300, Liav Rehana wrote:
> From: Liav Rehana
>
> The instruction ld.as takes as operands a base address and an offset,
> and doesn't access the sum of these two, but the sum of the base
> address and a shifted version of the offset.
> This isn't what we want
From: Liav Rehana
The instruction ld.as takes as operands a base address and an offset,
and doesn't access the sum of these two, but the sum of the base
address and a shifted version of the offset.
This isn't what we want in that case, since it causes a bug during
the push and pop of r25, since h
