From: Aleksandar Markovic <amarko...@wavecomp.com>
KCOV_ENABLE and KCOV_DISABLE play the role in kernel coverage
tracing. These ioctls do not use the third argument of ioctl()
system call and are straightforward to implement in QEMU.
Signed-off-by: Aleksandar Markovic <amarko...@wavecomp.com>
---
linux-user/ioctls.h | 5 +++++
linux-user/syscall.c | 3 +++
linux-user/syscall_defs.h | 4 ++++
3 files changed, 12 insertions(+)
diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
index d72cd76..39b3825 100644
--- a/linux-user/ioctls.h
+++ b/linux-user/ioctls.h
@@ -552,3 +552,8 @@
IOCTL_IGNORE(TIOCSTART)
IOCTL_IGNORE(TIOCSTOP)
#endif
+
+#ifdef CONFIG_KCOV
+ IOCTL(KCOV_ENABLE, 0, TYPE_NULL)
+ IOCTL(KCOV_DISABLE, 0, TYPE_NULL)
+#endif
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 171c0ca..6edcb0d 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -73,6 +73,9 @@
#ifdef CONFIG_SENDFILE
#include <sys/sendfile.h>
#endif
+#ifdef CONFIG_KCOV
+#include <sys/kcov.h>
+#endif
#define termios host_termios
#define winsize host_winsize
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 225dcfb..87e390d 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -2457,6 +2457,10 @@ struct target_mtpos {
#define TARGET_MTIOCGET TARGET_IOR('m', 2, struct target_mtget)
#define TARGET_MTIOCPOS TARGET_IOR('m', 3, struct target_mtpos)
+/* kcov ioctls */
+#define TARGET_KCOV_ENABLE TARGET_IO('c', 100)
+#define TARGET_KCOV_DISABLE TARGET_IO('c', 101)
+
struct target_sysinfo {
abi_long uptime; /* Seconds since boot */
abi_ulong loads[3]; /* 1, 5, and 15 minute load averages */
--
2.7.4
