On Tue, Oct 19, 2021 at 11:45 AM Warner Losh <i...@bsdimp.com> wrote:
>
> Implent EXCP_UDEF, EXCP_DEBUG, EXCP_INTERRUPT, EXCP_ATOMIC and
s/Implent/Implement/
> EXCP_YIELD. The first two generate a signal to the emulated
> binary. EXCP_ATOMIC handles atomic operations. The remainder are fancy
> nops.
>
> Signed-off-by: Stacey Son <s...@freebsd.org>
> Signed-off-by: Mikaël Urankar <mikael.uran...@gmail.com>
> Signed-off-by: Klye Evans <kev...@freebsd.org>
> Signed-off-by: Warner Losh <i...@bsdimp.com>
> ---
> bsd-user/arm/target_arch_cpu.h | 28 ++++++++++++++++++++++++++++
> 1 file changed, 28 insertions(+)
>
> diff --git a/bsd-user/arm/target_arch_cpu.h b/bsd-user/arm/target_arch_cpu.h
> index 94c9109c3f..f22384676a 100644
> --- a/bsd-user/arm/target_arch_cpu.h
> +++ b/bsd-user/arm/target_arch_cpu.h
> @@ -47,6 +47,34 @@ static inline void target_cpu_loop(CPUARMState *env)
> cpu_exec_end(cs);
> process_queued_cpu_work(cs);
> switch (trapnr) {
> + case EXCP_UDEF:
> + {
> + /* See arm/arm/undefined.c undefinedinstruction(); */
> + info.si_addr = env->regs[15];
> + info.si_signo = TARGET_SIGILL;
> + info.si_errno = 0;
> + info.si_code = TARGET_ILL_ILLADR;
> + queue_signal(env, info.si_signo, &info);
> + }
> + break;
> + case EXCP_INTERRUPT:
> + /* just indicate that signals should be handled asap */
> + break;
> + case EXCP_DEBUG:
> + {
> +
> + info.si_signo = TARGET_SIGTRAP;
> + info.si_errno = 0;
> + info.si_code = TARGET_TRAP_BRKPT;
> + queue_signal(env, info.si_signo, &info);
> + }
> + break;
> + case EXCP_ATOMIC:
> + cpu_exec_step_atomic(cs);
> + break;
> + case EXCP_YIELD:
> + /* nothing to do here for user-mode, just resume guest code */
> + break;
> default:
> fprintf(stderr, "qemu: unhandled CPU exception 0x%x -
> aborting\n",
> trapnr);
> --
> 2.32.0
>
Modulo typo:
Reviewed-by: Kyle Evans <kev...@freebsd.org>
