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From: Aleksandar Markovic <aleksandar.markovic@rt-rk.com>
To: qemu-devel@nongnu.org
Cc: laurent@vivier.eu, amarkovic@wavecomp.com
Subject: [PATCH v5 19/20] linux-user: Add support for KCOV_<ENABLE|DISABLE> ioctls
Date: Mon, 13 Jan 2020 21:34:42 +0100
Message-ID: <1578947683-21011-20-git-send-email-aleksandar.markovic@rt-rk.com> (raw)
In-Reply-To: <1578947683-21011-1-git-send-email-aleksandar.markovic@rt-rk.com>

From: Aleksandar Markovic <amarkovic@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 <amarkovic@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



  parent reply index

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-13 20:34 [PATCH v5 00/20] linux-user: Misc patches for 5.0 Aleksandar Markovic
2020-01-13 20:34 ` [PATCH v5 01/20] linux-user: Fix some constants in termbits.h Aleksandar Markovic
2020-01-14 14:16   ` Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 02/20] linux-user: alpha: Update syscall numbers to kernel 5.5 rc3 level Aleksandar Markovic
2020-01-14 15:12   ` Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 03/20] linux-user: m68k: " Aleksandar Markovic
2020-01-14 15:03   ` Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 04/20] linux-user: microblaze: " Aleksandar Markovic
2020-01-14 15:06   ` Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 05/20] linux-user: mips: " Aleksandar Markovic
2020-01-14 16:39   ` Laurent Vivier
2020-02-04 11:56     ` Aleksandar Markovic
2020-02-04 22:34       ` Laurent Vivier
2020-02-04 22:53         ` Aleksandar Markovic
2020-01-13 20:34 ` [PATCH v5 06/20] linux-user: x86_64: " Aleksandar Markovic
2020-01-14 15:16   ` Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 07/20] linux-user: xtensa: " Aleksandar Markovic
2020-01-14 15:08   ` Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 08/20] linux-user: xtensa: Remove unused constant TARGET_NR_syscall_count Aleksandar Markovic
2020-01-14 14:59   ` Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 09/20] linux-user: Add support for FS_IOC_<GET|SET>VERSION ioctls Aleksandar Markovic
2020-01-14 14:21   ` Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 10/20] linux-user: Add support for FS_IOC32_<GET|SET>FLAGS ioctls Aleksandar Markovic
2020-01-14 14:24   ` Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 11/20] linux-user: Add support for FS_IOC32_<GET|SET>VERSION ioctls Aleksandar Markovic
2020-01-14 14:24   ` Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 12/20] linux-user: Add support for FS_IOC_FS<GET|SET>XATTR ioctls Aleksandar Markovic
2020-01-14 14:29   ` Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 13/20] linux-user: Add support for FITRIM ioctl Aleksandar Markovic
2020-01-14 14:32   ` Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 14/20] linux-user: Add support for FIFREEZE and FITHAW ioctls Aleksandar Markovic
2020-01-14 14:34   ` Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 15/20] linux-user: Add support for FD<SETEMSGTRESH|SETMAXERRS|GETMAXERRS> ioctls Aleksandar Markovic
2020-01-14 14:36   ` Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 16/20] linux-user: Add support for FDFMT<BEG|TRK|END> ioctls Aleksandar Markovic
2020-01-14 14:38   ` Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 17/20] linux-user: Add support for FDGETFDCSTAT ioctl Aleksandar Markovic
2020-01-14 14:42   ` Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 18/20] configure: Detect kcov support and introduce CONFIG_KCOV Aleksandar Markovic
2020-01-14 14:48   ` Laurent Vivier
2020-01-13 20:34 ` Aleksandar Markovic [this message]
2020-01-14 14:49   ` [PATCH v5 19/20] linux-user: Add support for KCOV_<ENABLE|DISABLE> ioctls Laurent Vivier
2020-01-13 20:34 ` [PATCH v5 20/20] linux-user: Add support for KCOV_INIT_TRACE ioctl Aleksandar Markovic
2020-01-14 14:53   ` Laurent Vivier

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