qemu/linux-user/s390x
Jonathan Albrecht ccb5f2708f linux-user/s390x: signal with SIGFPE on compare-and-trap
Currently when a compare-and-trap instruction is executed, qemu will
always raise a SIGILL signal. On real hardware, a SIGFPE is raised.

Change the PGM_DATA case in cpu_loop to follow the behavior in
linux kernel /arch/s390/kernel/traps.c.
 * Only raise SIGILL if DXC == 0
 * If DXC matches a non-simulated IEEE exception, raise SIGFPE with
   correct si_code
 * Raise SIGFPE with si_code == 0 for everything else

When applied on 20210705210434.45824-2-iii@linux.ibm.com, this fixes
crashes in the java jdk such as the linked bug.

Signed-off-by: Jonathan Albrecht <jonathan.albrecht@linux.vnet.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Buglink: https://bugs.launchpad.net/qemu/+bug/1920913
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/319
Message-Id: <20210709160459.4962-2-jonathan.albrecht@linux.vnet.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-08-03 15:17:38 +02:00
..
cpu_loop.c linux-user/s390x: signal with SIGFPE on compare-and-trap 2021-08-03 15:17:38 +02:00
meson.build meson: linux-user 2020-08-21 06:30:38 -04:00
signal.c linux-user/s390x: Save and restore psw.mask properly 2021-06-21 08:48:21 +02:00
sockbits.h linux-user: move socket.h generic definitions to generic/sockbits.h 2018-05-25 10:10:55 +02:00
syscall.tbl linux-user: update syscall.tbl to Linux v5.13 2021-07-13 13:59:59 +02:00
syscallhdr.sh linux-user, s390x: add syscall table generation support 2020-03-20 16:02:00 +01:00
target_cpu.h linux-user: Introduce cpu_clone_regs_parent 2019-11-06 13:43:25 +01:00
target_elf.h linux-user: Move CPU type name selection to a function 2018-02-25 17:27:41 +01:00
target_errno_defs.h linux-user: Extract target errno to 'target_errno_defs.h' 2021-07-12 21:53:35 +02:00
target_fcntl.h linux-user: move generic fcntl definitions to generic/fcntl.h 2018-06-04 01:30:43 +02:00
target_signal.h linux-user: Correct definition of stack_t 2020-11-11 10:59:39 +01:00
target_structs.h linux user: Fix Lesser GPL version number 2020-11-15 16:41:26 +01:00
target_syscall.h linux-user: Add strace support for printing arguments of syscalls used to lock and unlock memory 2020-08-27 12:29:50 +02:00
termbits.h linux-user: Add generic 'termbits.h' for some archs 2020-08-27 12:29:50 +02:00