[PATCH 01/22] semihosting: add guest_error logging for failed opens

[Alex Bennée]

This usually indicates the semihosting call was expecting to find
something but didn't.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
---
 semihosting/syscalls.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/semihosting/syscalls.c b/semihosting/syscalls.c
index c40348f996..f6451d9bb0 100644
--- a/semihosting/syscalls.c
+++ b/semihosting/syscalls.c
@@ -7,6 +7,7 @@
  */
 
 #include "qemu/osdep.h"
+#include "qemu/log.h"
 #include "cpu.h"
 #include "gdbstub/syscalls.h"
 #include "semihosting/guestfd.h"
@@ -287,6 +288,7 @@ static void host_open(CPUState *cs, gdb_syscall_complete_cb 
complete,
 
     ret = open(p, host_flags, mode);
     if (ret < 0) {
+        qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to open %s\n", __func__, p);
         complete(cs, -1, errno);
     } else {
         int guestfd = alloc_guestfd();
-- 
2.39.5