[PATCH v3 08/19] target/arm: Add semihosting stub to allow building without TCG

[Philippe Mathieu-Daudé]

Semihosting requires TCG. When configured with --disable-tcg, the
build fails because the 'do_arm_semihosting' is missing. Instead
of adding more few more #ifdeffery to the helper code, add a stub.

Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
 target/arm/arm-semi-stub.c | 13 +++++++++++++
 target/arm/Makefile.objs   |  3 ++-
 2 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100644 target/arm/arm-semi-stub.c

diff --git a/target/arm/arm-semi-stub.c b/target/arm/arm-semi-stub.c
new file mode 100644
index 0000000000..47d042f942
--- /dev/null
+++ b/target/arm/arm-semi-stub.c
@@ -0,0 +1,13 @@
+/*
+ * Arm "Angel" semihosting syscalls stubs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "hw/semihosting/semihost.h"
+
+target_ulong do_arm_semihosting(CPUARMState *env)
+{
+    abort();
+}
diff --git a/target/arm/Makefile.objs b/target/arm/Makefile.objs
index 0c6f8c248d..fa278bb4c1 100644
--- a/target/arm/Makefile.objs
+++ b/target/arm/Makefile.objs
@@ -57,7 +57,8 @@ target/arm/translate.o: target/arm/decode-t16.inc.c
 
 ifeq ($(CONFIG_TCG),y)
 
-obj-y += arm-semi.o
+obj-$(CONFIG_SEMIHOSTING) += arm-semi.o
+obj-$(call lnot,$(CONFIG_SEMIHOSTING)) += arm-semi-stub.o
 
 endif # CONFIG_TCG
 
-- 
2.21.1