[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Bug 1791763] Re: broken signal handling in nios2 user-mode emulation

From: Peter Maydell
Subject: [Bug 1791763] Re: broken signal handling in nios2 user-mode emulation
Date: Fri, 13 Nov 2020 16:00:10 -0000

A quick eyeball of the patch and the current QEMU tree indicates that at
least some of the bugs it's trying to fix still exist (notably a lot of
use of "long" in various target_* structures, which should not be using
types with a width dependent on the host system.)

** Changed in: qemu
       Status: Incomplete => Confirmed

You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.

  broken signal handling in nios2 user-mode emulation

Status in QEMU:

Bug description:
  This bug is against the 3.0 release.

  It appears that the signal handling parts of the nios2 user-mode
  emulation have never really been completed or tested.  Some examples
  of failing tests from the GCC testsuite are gcc.dg/pr78185.c and

  Some problems I've identified and tried to fix with the attached patch

  - Code copied from the Linux kernel wasn't adjusted to differentiate
  between host and target data types and address spaces.

  - The sigaltstack() system call returns EINVAL because fields are
  listed in the wrong order in struct target_sigaltstack.

  With this patch, the system calls to set up the signal handler are
  returning successfully, but the handler isn't being invoked, so
  something is still wrong.  I think I need another pair of eyes to look
  over this code.

To manage notifications about this bug go to:

reply via email to

[Prev in Thread] Current Thread [Next in Thread]