diff options
| author | Aleksandar Markovic <amarkovic@wavecomp.com> | 2020-01-16 23:49:50 +0100 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2020-01-22 15:15:18 +0100 |
| commit | bd27e675d33d829fdb89a8604e0aba6f9f38ab79 (patch) | |
| tree | fef9ec840c190178024c3c7f5a9eac25cb8ee29f /linux-user | |
| parent | db37dd89d663a2891d2b70c753a41389ae7893e4 (diff) | |
linux-user: Add support for KCOV_<ENABLE|DISABLE> ioctls
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 <laurent@vivier.eu>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-Id: <1579214991-19602-12-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/ioctls.h | 5 | ||||
| -rw-r--r-- | linux-user/syscall.c | 3 | ||||
| -rw-r--r-- | linux-user/syscall_defs.h | 4 |
3 files changed, 12 insertions, 0 deletions
diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index 29969e2f2f..6220dd8cf7 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 249e4b95fc..c5bda60b45 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 b3acf85a6b..7b0b60d253 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 */ |