On 24/06/2015 12:48, Peter Maydell wrote:
> > > I didn't think SETEND existed at all in AArch64?
> >
> > No, but the kernel traps it and flips SCTLR.E0E.
>
> Traps what? There is no encoding in A64, unless I'm missing something...
Ah, it's the A64 kernel executing A32 code. So no problem.
Paol
On 24 June 2015 at 11:34, Paolo Bonzini wrote:
>
>
> On 24/06/2015 12:21, Peter Maydell wrote:
>> > I think signal_cpsr_e is exactly what you want for AArch32. It sets
>> > CPSR.E in main and setup_return for AArch32.
>> >
>> > For AArch64 you don't need anything because, even though the kernel d
On 24/06/2015 12:21, Peter Maydell wrote:
> > I think signal_cpsr_e is exactly what you want for AArch32. It sets
> > CPSR.E in main and setup_return for AArch32.
> >
> > For AArch64 you don't need anything because, even though the kernel does
> > trap setend and tweak SCTLR.E0E in response to i
On 24 June 2015 at 11:09, Paolo Bonzini wrote:
>
>
> On 23/06/2015 22:30, Peter Crosthwaite wrote:
>> > I'm confused. arm_cpu_is_big_endian() tells you whether the CPU
>> > is *currently* big-endian or not. That doesn't help you with
>> > answering the question "I'm about to run a signal handler;
On 23/06/2015 22:30, Peter Crosthwaite wrote:
> > I'm confused. arm_cpu_is_big_endian() tells you whether the CPU
> > is *currently* big-endian or not. That doesn't help you with
> > answering the question "I'm about to run a signal handler; what
> > should I set the CPSR.E bit to?" in linux-user
On 23 June 2015 at 21:30, Peter Crosthwaite
wrote:
> On Tue, Jun 23, 2015 at 11:54 AM, Peter Maydell
> wrote:
>> On 23 June 2015 at 19:43, Peter Crosthwaite
>> wrote:
>> I'm confused. arm_cpu_is_big_endian() tells you whether the CPU
>> is *currently* big-endian or not. That doesn't help you wit
On Tue, Jun 23, 2015 at 11:54 AM, Peter Maydell
wrote:
> On 23 June 2015 at 19:43, Peter Crosthwaite
> wrote:
>> On Tue, Jun 23, 2015 at 1:04 AM, Peter Maydell
>> wrote:
>>> The Linux userland ABI says:
>>> (1) the ELF file defines whether an executable is BE8 or not
>>> (2) this setting affe
On 23 June 2015 at 19:43, Peter Crosthwaite
wrote:
> On Tue, Jun 23, 2015 at 1:04 AM, Peter Maydell
> wrote:
>> The Linux userland ABI says:
>> (1) the ELF file defines whether an executable is BE8 or not
>> (2) this setting affects:
>> (a) whether we start at the process entry point in BE
On Tue, Jun 23, 2015 at 1:04 AM, Peter Maydell wrote:
> On 22 June 2015 at 23:48, Peter Crosthwaite
> wrote:
>> On Thu, Jun 26, 2014 at 7:18 AM, Paolo Bonzini wrote:
>>> Il 26/06/2014 16:15, Peter Maydell ha scritto:
(There is code for handling CPSR_E in the kernel's start_thread()
>>>
On 22 June 2015 at 23:48, Peter Crosthwaite
wrote:
> On Thu, Jun 26, 2014 at 7:18 AM, Paolo Bonzini wrote:
>> Il 26/06/2014 16:15, Peter Maydell ha scritto:
>>>
>>> (There is code for handling CPSR_E in the kernel's start_thread()
>>> macro but that is actually only called for starting new
>>> pr
On Thu, Jun 26, 2014 at 7:18 AM, Paolo Bonzini wrote:
> Il 26/06/2014 16:15, Peter Maydell ha scritto:
>>
>> (There is code for handling CPSR_E in the kernel's start_thread()
>> macro but that is actually only called for starting new
>> processes, AFAICT.)
>
>
> Yes, you're right.
>
So I am strug
Il 26/06/2014 16:15, Peter Maydell ha scritto:
(There is code for handling CPSR_E in the kernel's start_thread()
macro but that is actually only called for starting new
processes, AFAICT.)
Yes, you're right.
Paolo
On 21 June 2014 13:58, Paolo Bonzini wrote:
> Set it on startup, in signal handler frames and in new threads.
>
> Signed-off-by: Paolo Bonzini
> ---
> linux-user/arm/target_cpu.h | 2 ++
> linux-user/main.c | 3 ++-
> linux-user/signal.c | 2 ++
> target-arm/cpu.h|
Set it on startup, in signal handler frames and in new threads.
Signed-off-by: Paolo Bonzini
---
linux-user/arm/target_cpu.h | 2 ++
linux-user/main.c | 3 ++-
linux-user/signal.c | 2 ++
target-arm/cpu.h| 3 +++
4 files changed, 9 insertions(+), 1 deletions(-)
dif
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