X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/0c530ab8987f0ae6a1a3d9284f40182b88852816..2d21ac55c334faf3a56e5634905ed6987fc787d4:/bsd/sys/fasttrap.h?ds=inline

diff --git a/bsd/sys/fasttrap.h b/bsd/sys/fasttrap.h
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+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef	_SYS_FASTTRAP_H
+#define	_SYS_FASTTRAP_H
+
+/* #pragma ident	"@(#)fasttrap.h	1.5	06/03/30 SMI" */
+
+#include <sys/fasttrap_isa.h>
+#include <sys/dtrace.h>
+#include <sys/types.h>
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#if !defined(__APPLE__)
+#define	FASTTRAPIOC		(('m' << 24) | ('r' << 16) | ('f' << 8))
+#else
+#define	FASTTRAPIOC		_IO('d', 0)
+#endif /* __APPLE__ */
+#define	FASTTRAPIOC_MAKEPROBE	(FASTTRAPIOC | 1)
+#define	FASTTRAPIOC_GETINSTR	(FASTTRAPIOC | 2)
+
+typedef enum fasttrap_probe_type {
+	DTFTP_NONE = 0,
+	DTFTP_ENTRY,
+	DTFTP_RETURN,
+	DTFTP_OFFSETS,
+	DTFTP_POST_OFFSETS,
+	DTFTP_IS_ENABLED
+} fasttrap_probe_type_t;
+
+#if defined(__APPLE__)
+typedef enum fasttrap_provider_type {
+	DTFTP_PROVIDER_NONE = 0,
+	DTFTP_PROVIDER_USDT, 
+	DTFTP_PROVIDER_PID,
+	DTFTP_PROVIDER_OBJC,
+	DTFTP_PROVIDER_ONESHOT
+} fasttrap_provider_type_t;
+
+/* Moved from fasttrap.c */
+#define	FASTTRAP_PID_NAME		"pid"
+#define	FASTTRAP_OBJC_NAME		"objc"
+#define	FASTTRAP_ONESHOT_NAME		"oneshot"
+
+#endif
+
+typedef struct fasttrap_probe_spec {
+	pid_t				ftps_pid;
+#if defined(__APPLE__)
+	fasttrap_provider_type_t	ftps_provider_type;
+	fasttrap_probe_type_t		ftps_probe_type;
+#endif
+	char				ftps_func[DTRACE_FUNCNAMELEN];
+	char				ftps_mod[DTRACE_MODNAMELEN];
+
+	uint64_t			ftps_pc;
+	uint64_t			ftps_size;
+	uint64_t			ftps_noffs;
+	uint64_t			ftps_offs[1];
+} fasttrap_probe_spec_t;
+
+typedef struct fasttrap_instr_query {
+	uint64_t		ftiq_pc;
+	pid_t			ftiq_pid;
+	fasttrap_instr_t	ftiq_instr;
+} fasttrap_instr_query_t;
+
+/*
+ * To support the fasttrap provider from very early in a process's life,
+ * the run-time linker, ld.so.1, has a program header of type PT_SUNWDTRACE
+ * which points to a data object which must be PT_SUNWDTRACE_SIZE bytes.
+ * This structure mimics the fasttrap provider section of the ulwp_t structure.
+ * When the fasttrap provider is changed to require new or different
+ * instructions, the data object in ld.so.1 and the thread initializers in libc
+ * (libc_init() and _thrp_create()) need to be updated to include the new
+ * instructions, and PT_SUNWDTRACE needs to be changed to a new unique number
+ * (while the old value gets assigned something like PT_SUNWDTRACE_1). Since the
+ * linker must be backward compatible with old Solaris releases, it must have
+ * program headers for each of the PT_SUNWDTRACE versions. The kernel's
+ * elfexec() function only has to look for the latest version of the
+ * PT_SUNWDTRACE program header.
+ */
+#define	PT_SUNWDTRACE_SIZE	FASTTRAP_SUNWDTRACE_SIZE
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* _SYS_FASTTRAP_H */