i386: split misc helper user stubs and sysemu part

Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

[claudio]:
Rebased on da3f3b02("target/i386: fail if toggling LA57 in 64-bitmode")

Signed-off-by: Claudio Fontana <cfontana@suse.de>
Message-Id: <20210322132800.7470-15-cfontana@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2 files changed, 76 insertions, 0 deletions

diff --git a/target/i386/tcg/user/meson.build b/target/i386/tcg/user/meson.build
index e0ef0f02e2..2ab8bd903c 100644
--- a/target/i386/tcg/user/meson.build
+++ b/target/i386/tcg/user/meson.build
@@ -1,3 +1,4 @@
 i386_user_ss.add(when: ['CONFIG_TCG', 'CONFIG_USER_ONLY'], if_true: files(
   'excp_helper.c',
+  'misc_stubs.c',
 ))
diff --git a/target/i386/tcg/user/misc_stubs.c b/target/i386/tcg/user/misc_stubs.c
new file mode 100644
index 0000000000..84df4e65ff
--- /dev/null
+++ b/target/i386/tcg/user/misc_stubs.c
@@ -0,0 +1,75 @@
+/*
+ *  x86 misc helpers
+ *
+ *  Copyright (c) 2003 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "exec/helper-proto.h"
+
+void helper_outb(CPUX86State *env, uint32_t port, uint32_t data)
+{
+    g_assert_not_reached();
+}
+
+target_ulong helper_inb(CPUX86State *env, uint32_t port)
+{
+    g_assert_not_reached();
+    return 0;
+}
+
+void helper_outw(CPUX86State *env, uint32_t port, uint32_t data)
+{
+    g_assert_not_reached();
+}
+
+target_ulong helper_inw(CPUX86State *env, uint32_t port)
+{
+    g_assert_not_reached();
+    return 0;
+}
+
+void helper_outl(CPUX86State *env, uint32_t port, uint32_t data)
+{
+    g_assert_not_reached();
+}
+
+target_ulong helper_inl(CPUX86State *env, uint32_t port)
+{
+    g_assert_not_reached();
+    return 0;
+}
+
+target_ulong helper_read_crN(CPUX86State *env, int reg)
+{
+    g_assert_not_reached();
+}
+
+void helper_write_crN(CPUX86State *env, int reg, target_ulong t0)
+{
+    g_assert_not_reached();
+}
+
+void helper_wrmsr(CPUX86State *env)
+{
+    g_assert_not_reached();
+}
+
+void helper_rdmsr(CPUX86State *env)
+{
+    g_assert_not_reached();
+}