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[PULL 09/17] linux-user: Add support for KCOV_<ENABLE|DISABLE> ioctls
From: |
Laurent Vivier |
Subject: |
[PULL 09/17] linux-user: Add support for KCOV_<ENABLE|DISABLE> ioctls |
Date: |
Thu, 23 Jan 2020 09:22:19 +0100 |
From: Aleksandar Markovic <address@hidden>
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.
Reviewed-by: Laurent Vivier <address@hidden>
Signed-off-by: Aleksandar Markovic <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Laurent Vivier <address@hidden>
---
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 29969e2f2f27..6220dd8cf791 100644
--- a/linux-user/ioctls.h
+++ b/linux-user/ioctls.h
@@ -534,3 +534,8 @@
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 249e4b95fc9f..c5bda60b45de 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 b3acf85a6b23..7b0b60d253d9 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -2434,6 +2434,10 @@ 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 */
--
2.24.1
- [PULL 00/17] Linux user for 5.0 patches, Laurent Vivier, 2020/01/23
- [PULL 05/17] linux-user: Add support for FS_IOC32_<GET|SET>VERSION ioctls, Laurent Vivier, 2020/01/23
- [PULL 04/17] linux-user: Add support for FS_IOC32_<GET|SET>FLAGS ioctls, Laurent Vivier, 2020/01/23
- [PULL 08/17] configure: Detect kcov support and introduce CONFIG_KCOV, Laurent Vivier, 2020/01/23
- [PULL 01/17] linux-user:Fix align mistake when mmap guest space, Laurent Vivier, 2020/01/23
- [PULL 09/17] linux-user: Add support for KCOV_<ENABLE|DISABLE> ioctls,
Laurent Vivier <=
- [PULL 10/17] linux-user: Add support for KCOV_INIT_TRACE ioctl, Laurent Vivier, 2020/01/23
- [PULL 06/17] linux-user: Add support for FD<SETEMSGTRESH|SETMAXERRS|GETMAXERRS> ioctls, Laurent Vivier, 2020/01/23
- [PULL 07/17] linux-user: Add support for FDFMT<BEG|TRK|END> ioctls, Laurent Vivier, 2020/01/23
- [PULL 03/17] linux-user: Add support for FS_IOC_<GET|SET>VERSION ioctls, Laurent Vivier, 2020/01/23
- [PULL 02/17] linux-user: Reserve space for brk, Laurent Vivier, 2020/01/23
- [PULL 14/17] linux-user: Add support for getting/setting RTC periodic interrupt and epoch using ioctls, Laurent Vivier, 2020/01/23
- [PULL 17/17] linux-user: Add support for read/clear RTC voltage low detector using ioctls, Laurent Vivier, 2020/01/23
- [PULL 11/17] linux-user: Add support for TYPE_LONG and TYPE_ULONG in do_ioctl(), Laurent Vivier, 2020/01/23
- [PULL 15/17] linux-user: Add support for getting/setting RTC wakeup alarm using ioctls, Laurent Vivier, 2020/01/23
- [PULL 12/17] linux-user: Add support for enabling/disabling RTC features using ioctls, Laurent Vivier, 2020/01/23