Import the librtld_db library. This is needed by userland DTrace.

This is not yet enabled in the build because I also need to import a new
version of libproc.

Sponsored by:	The FreeBSD Foundation

1 files changed, 150 insertions, 0 deletions

diff --git a/lib/librtld_db/rtld_db.h b/lib/librtld_db/rtld_db.h
new file mode 100644
index 0000000..33da4d3
--- /dev/null
+++ b/lib/librtld_db/rtld_db.h
@@ -0,0 +1,150 @@
+/*
+ * Copyright (c) 2010 The FreeBSD Foundation 
+ * All rights reserved. 
+ * 
+ * This software was developed by Rui Paulo under sponsorship from the
+ * FreeBSD Foundation. 
+ *  
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions 
+ * are met: 
+ * 1. Redistributions of source code must retain the above copyright 
+ *    notice, this list of conditions and the following disclaimer. 
+ * 2. Redistributions in binary form must reproduce the above copyright 
+ *    notice, this list of conditions and the following disclaimer in the 
+ *    documentation and/or other materials provided with the distribution. 
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
+ * SUCH DAMAGE. 
+ *
+ * $FreeBSD$
+ */ 
+
+#ifndef _RTLD_DB_H_
+#define _RTLD_DB_H_
+
+#include <sys/param.h>
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+
+#define	RD_VERSION	1
+
+typedef enum {
+	RD_OK,
+	RD_ERR,
+	RD_DBERR,
+	RD_NOCAPAB,
+	RD_NODYNAM,
+	RD_NOBASE,
+	RD_NOMAPS
+} rd_err_e;
+
+typedef struct rd_agent {
+	struct proc_handle *rda_php;
+	uintptr_t rda_addr;		/* address of r_debug_state */
+} rd_agent_t;
+
+typedef struct rd_loadobj {
+	uintptr_t	rdl_saddr;		/* start address */
+	uintptr_t	rdl_eaddr;		/* end address */
+	uint32_t	rdl_offset;
+	uint8_t		rdl_prot;
+#define RD_RDL_R	0x01
+#define RD_RDL_W	0x02
+#define RD_RDL_X	0x04
+	enum {
+		RDL_TYPE_NONE	= 0,
+		RDL_TYPE_DEF,
+		RDL_TYPE_VNODE,
+		RDL_TYPE_SWAP,
+		RDL_TYPE_DEV,
+		/* XXX some types missing */
+		RDL_TYPE_UNKNOWN = 255
+	} rdl_type;
+	unsigned char	rdl_path[PATH_MAX];
+} rd_loadobj_t;
+
+typedef enum {
+	RD_NONE = 0,
+	RD_PREINIT,
+	RD_POSTINIT,
+	RD_DLACTIVITY
+} rd_event_e;
+
+typedef enum {
+	RD_NOTIFY_BPT,
+	RD_NOTIFY_AUTOBPT,
+	RD_NOTIFY_SYSCALL
+} rd_notify_e;
+
+typedef struct rd_notify {
+	rd_notify_e type;
+	union {
+		uintptr_t bptaddr;
+		long      syscallno;
+	} u;
+} rd_notify_t;
+
+typedef enum {
+	RD_NOSTATE = 0,
+	RD_CONSISTENT,
+	RD_ADD,
+	RD_DELETE
+} rd_state_e;
+
+typedef struct rd_event_msg {
+	rd_event_e type;
+	union {
+		rd_state_e state;
+	} u;
+} rd_event_msg_t;
+
+typedef enum {
+	RD_RESOLVE_NONE,
+	RD_RESOLVE_STEP,
+	RD_RESOLVE_TARGET,
+	RD_RESOLVE_TARGET_STEP
+} rd_skip_e;
+
+typedef struct rd_plt_info {
+	rd_skip_e pi_skip_method;
+	long	  pi_nstep;
+	uintptr_t pi_target;
+	uintptr_t pi_baddr;
+	unsigned int pi_flags;
+} rd_plt_info_t;
+
+#define RD_FLG_PI_PLTBOUND	0x0001
+
+__BEGIN_DECLS
+
+struct proc_handle;
+void		rd_delete(rd_agent_t *);
+const char 	*rd_errstr(rd_err_e);
+rd_err_e	rd_event_addr(rd_agent_t *, rd_event_e, rd_notify_t *);
+rd_err_e	rd_event_enable(rd_agent_t *, int);
+rd_err_e	rd_event_getmsg(rd_agent_t *, rd_event_msg_t *);
+rd_err_e	rd_init(int);
+typedef int rl_iter_f(const rd_loadobj_t *, void *);
+rd_err_e	rd_loadobj_iter(rd_agent_t *, rl_iter_f *, void *);
+void		rd_log(const int);
+rd_agent_t 	*rd_new(struct proc_handle *);
+rd_err_e	rd_objpad_enable(rd_agent_t *, size_t);
+struct proc;
+rd_err_e	rd_plt_resolution(rd_agent_t *, uintptr_t, struct proc *,
+		    uintptr_t, rd_plt_info_t *);
+rd_err_e	rd_reset(rd_agent_t *);
+
+__END_DECLS
+
+#endif /* _RTLD_DB_H_ */