target/m68k: Honour -semihosting-config userspace=on

Honour the commandline -semihosting-config userspace=on option,
instead of never permitting userspace semihosting calls in system
emulation mode, by passing the correct value to the is_userspace
argument of semihosting_enabled(), instead of manually checking and
always forbidding semihosting if the guest is in userspace.

(Note that target/m68k doesn't support semihosting at all
in the linux-user build.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220822141230.3658237-4-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

diff --git a/target/m68k/op_helper.c b/target/m68k/op_helper.c
index 4b3dfec..a96a034 100644 (file)
--- a/target/m68k/op_helper.c
+++ b/target/m68k/op_helper.c
@@ -203,8 +203,7 @@ static void cf_interrupt_all(CPUM68KState *env, int is_hw)
             cf_rte(env);
             return;
         case EXCP_HALT_INSN:
-            if (semihosting_enabled(false)
-                    && (env->sr & SR_S) != 0
+            if (semihosting_enabled((env->sr & SR_S) == 0)
                     && (env->pc & 3) == 0
                     && cpu_lduw_code(env, env->pc - 4) == 0x4e71
                     && cpu_ldl_code(env, env->pc) == 0x4e7bf000) {