1 files changed, 71 insertions, 0 deletions
diff --git a/sys/cddl/dev/kinst/kinst.h b/sys/cddl/dev/kinst/kinst.h
new file mode 100644
index 000000000000..ea1a5b50004f
--- /dev/null
+++ b/sys/cddl/dev/kinst/kinst.h
@@ -0,0 +1,71 @@
+/*
+ * SPDX-License-Identifier: CDDL 1.0
+ *
+ * Copyright 2022 Christos Margiolis <christos@FreeBSD.org>
+ */
+
+#ifndef _KINST_H_
+#define _KINST_H_
+
+#include <sys/dtrace.h>
+
+typedef struct {
+	char	kpd_func[DTRACE_FUNCNAMELEN];
+	char	kpd_mod[DTRACE_MODNAMELEN];
+	int	kpd_off;
+} dtrace_kinst_probedesc_t;
+
+#define KINSTIOC_MAKEPROBE	_IOW('k', 1, dtrace_kinst_probedesc_t)
+
+#ifdef _KERNEL
+
+#include <sys/queue.h>
+
+#include "kinst_isa.h"
+
+struct kinst_probe {
+	LIST_ENTRY(kinst_probe)	kp_hashnext;
+	const char		*kp_func;
+	char			kp_name[16];
+	dtrace_id_t		kp_id;
+	kinst_patchval_t	kp_patchval;
+	kinst_patchval_t	kp_savedval;
+	kinst_patchval_t	*kp_patchpoint;
+
+	struct kinst_probe_md	kp_md;
+};
+
+LIST_HEAD(kinst_probe_list, kinst_probe);
+
+extern struct kinst_probe_list	*kinst_probetab;
+
+#define KINST_PROBETAB_MAX	0x8000	/* 32k */
+#define KINST_ADDR2NDX(addr)	(((uintptr_t)(addr)) & (KINST_PROBETAB_MAX - 1))
+#define KINST_GETPROBE(i) 	(&kinst_probetab[KINST_ADDR2NDX(i)])
+
+struct linker_file;
+struct linker_symval;
+
+int	kinst_invop(uintptr_t, struct trapframe *, uintptr_t);
+int	kinst_make_probe(struct linker_file *, int, struct linker_symval *,
+	    void *);
+void	kinst_patch_tracepoint(struct kinst_probe *, kinst_patchval_t);
+void	kinst_probe_create(struct kinst_probe *, struct linker_file *);
+
+int	kinst_trampoline_init(void);
+int	kinst_trampoline_deinit(void);
+uint8_t	*kinst_trampoline_alloc(int);
+void	kinst_trampoline_dealloc(uint8_t *);
+
+#ifdef MALLOC_DECLARE
+MALLOC_DECLARE(M_KINST);
+#endif /* MALLOC_DECLARE */
+
+#define KINST_LOG_HELPER(fmt, ...)	\
+	printf("%s:%d: " fmt "%s\n", __func__, __LINE__, __VA_ARGS__)
+#define KINST_LOG(...)			\
+	KINST_LOG_HELPER(__VA_ARGS__, "")
+
+#endif /* _KERNEL */
+
+#endif /* _KINST_H_ */