64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
|
#ifndef _LINUX_KCOV_IOCTLS_H
|
|
#define _LINUX_KCOV_IOCTLS_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
/*
|
|
* Argument for KCOV_REMOTE_ENABLE ioctl, see Documentation/dev-tools/kcov.rst
|
|
* and the comment before kcov_remote_start() for usage details.
|
|
*/
|
|
struct kcov_remote_arg {
|
|
__u32 trace_mode; /* KCOV_TRACE_PC or KCOV_TRACE_CMP */
|
|
__u32 area_size; /* Length of coverage buffer in words */
|
|
__u32 num_handles; /* Size of handles array */
|
|
__aligned_u64 common_handle;
|
|
__aligned_u64 handles[0];
|
|
};
|
|
|
|
#define KCOV_REMOTE_MAX_HANDLES 0x100
|
|
|
|
#define KCOV_INIT_TRACE _IOR('c', 1, unsigned long)
|
|
#define KCOV_ENABLE _IO('c', 100)
|
|
#define KCOV_DISABLE _IO('c', 101)
|
|
#define KCOV_REMOTE_ENABLE _IOW('c', 102, struct kcov_remote_arg)
|
|
|
|
enum {
|
|
/*
|
|
* Tracing coverage collection mode.
|
|
* Covered PCs are collected in a per-task buffer.
|
|
* In new KCOV version the mode is chosen by calling
|
|
* ioctl(fd, KCOV_ENABLE, mode). In older versions the mode argument
|
|
* was supposed to be 0 in such a call. So, for reasons of backward
|
|
* compatibility, we have chosen the value KCOV_TRACE_PC to be 0.
|
|
*/
|
|
KCOV_TRACE_PC = 0,
|
|
/* Collecting comparison operands mode. */
|
|
KCOV_TRACE_CMP = 1,
|
|
};
|
|
|
|
/*
|
|
* The format for the types of collected comparisons.
|
|
*
|
|
* Bit 0 shows whether one of the arguments is a compile-time constant.
|
|
* Bits 1 & 2 contain log2 of the argument size, up to 8 bytes.
|
|
*/
|
|
#define KCOV_CMP_CONST (1 << 0)
|
|
#define KCOV_CMP_SIZE(n) ((n) << 1)
|
|
#define KCOV_CMP_MASK KCOV_CMP_SIZE(3)
|
|
|
|
#define KCOV_SUBSYSTEM_COMMON (0x00ull << 56)
|
|
#define KCOV_SUBSYSTEM_USB (0x01ull << 56)
|
|
|
|
#define KCOV_SUBSYSTEM_MASK (0xffull << 56)
|
|
#define KCOV_INSTANCE_MASK (0xffffffffull)
|
|
|
|
static inline __u64 kcov_remote_handle(__u64 subsys, __u64 inst)
|
|
{
|
|
if (subsys & ~KCOV_SUBSYSTEM_MASK || inst & ~KCOV_INSTANCE_MASK)
|
|
return 0;
|
|
return subsys | inst;
|
|
}
|
|
|
|
#endif /* _LINUX_KCOV_IOCTLS_H */
|