target-arm: Wire up HLT 0xf000 as the A64 semihosting instruction

For the A64 instruction set, the semihosting call instruction
is 'HLT 0xf000'. Wire this up to call do_arm_semihosting()
if semihosting is enabled.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Christopher Covington <christopher.covington@linaro.org>
Tested-by: Christopher Covington <cov@codeaurora.org>
Message-id: 1439483745-28752-10-git-send-email-peter.maydell@linaro.org

1 files changed, 3 insertions, 0 deletions

diff --git a/linux-user/main.c b/linux-user/main.c
index 2c9658e..06dd296 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -1052,6 +1052,9 @@ void cpu_loop(CPUARMState *env)
                 queue_signal(env, info.si_signo, &info);
             }
             break;
+        case EXCP_SEMIHOST:
+            env->xregs[0] = do_arm_semihosting(env);
+            break;
         default:
             fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
                     trapnr);