On 9/28/21 5:31 AM, Peter Maydell wrote:
+uint32_t *host_rc = g2h_untagged(retcode);
...but here we treat it as a normal guest address that we can
convert into a host address and dereference. If the signal handler
is being entered in Thumb mode this will be a misaligned pointer.
Oops,
On Tue, 28 Sept 2021 at 03:00, Richard Henderson
wrote:
>
> Mirror what the kernel does in arch/arm/kernel/signal.h,
> using the old sigframe struct in the rt sigframe struct.
>
> Update the trampoline code to match the kernel: this uses
> sp-relative accesses rather than pc-relative.
>
> Copy the
Mirror what the kernel does in arch/arm/kernel/signal.h,
using the old sigframe struct in the rt sigframe struct.
Update the trampoline code to match the kernel: this uses
sp-relative accesses rather than pc-relative.
Copy the code into frame->retcode from the trampoline page.
This minimises the
