Initial version of DTrace on ARM32.

Submitted by:	Howard Su based on work by Oleksandr Tymoshenko
Reviewed by:	ian, andrew, rpaulo, markj

5 files changed, 204 insertions, 3 deletions

diff --git a/cddl/contrib/opensolaris/lib/libdtrace/arm/dt_isadep.c b/cddl/contrib/opensolaris/lib/libdtrace/arm/dt_isadep.c
new file mode 100644
index 0000000..25a250d
--- /dev/null
+++ b/cddl/contrib/opensolaris/lib/libdtrace/arm/dt_isadep.c
@@ -0,0 +1,190 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (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 2005 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ * Copyright 2014 Howard Su
+ * Copyright 2015 George V. Neville-Neil
+ *
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <stdlib.h>
+#include <assert.h>
+#include <errno.h>
+#include <string.h>
+#include <libgen.h>
+
+#include <dt_impl.h>
+#include <dt_pid.h>
+
+#if !defined(sun)
+#define PR_MODEL_ILP32	1
+#define PR_MODEL_LP64	2
+#include <libproc_compat.h>
+#endif
+
+#define	OP(x)		((x) >> 30)
+#define	OP2(x)		(((x) >> 22) & 0x07)
+#define	COND(x)		(((x) >> 25) & 0x0f)
+#define	A(x)		(((x) >> 29) & 0x01)
+
+#define	OP_BRANCH	0
+
+#define	OP2_BPcc	0x1
+#define	OP2_Bicc	0x2
+#define	OP2_BPr		0x3
+#define	OP2_FBPfcc	0x5
+#define	OP2_FBfcc	0x6
+
+/*ARGSUSED*/
+int
+dt_pid_create_entry_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
+    fasttrap_probe_spec_t *ftp, const GElf_Sym *symp)
+{
+	ftp->ftps_type = DTFTP_ENTRY;
+	ftp->ftps_pc = (uintptr_t)symp->st_value;
+	ftp->ftps_size = (size_t)symp->st_size;
+	ftp->ftps_noffs = 1;
+	ftp->ftps_offs[0] = 0;
+
+	if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
+		dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
+		    strerror(errno));
+		return (dt_set_errno(dtp, errno));
+	}
+
+	return (1);
+}
+
+int
+dt_pid_create_return_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
+    fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, uint64_t *stret)
+{
+
+	uint32_t *text;
+	int i;
+	int srdepth = 0;
+
+	dt_dprintf("%s: unimplemented\n", __func__);
+	return (DT_PROC_ERR);
+
+	if ((text = malloc(symp->st_size + 4)) == NULL) {
+		dt_dprintf("mr sparkle: malloc() failed\n");
+		return (DT_PROC_ERR);
+	}
+
+	if (Pread(P, text, symp->st_size, symp->st_value) != symp->st_size) {
+		dt_dprintf("mr sparkle: Pread() failed\n");
+		free(text);
+		return (DT_PROC_ERR);
+	}
+
+	/*
+	 * Leave a dummy instruction in the last slot to simplify edge
+	 * conditions.
+	 */
+	text[symp->st_size / 4] = 0;
+
+	ftp->ftps_type = DTFTP_RETURN;
+	ftp->ftps_pc = symp->st_value;
+	ftp->ftps_size = symp->st_size;
+	ftp->ftps_noffs = 0;
+
+
+	free(text);
+	if (ftp->ftps_noffs > 0) {
+		if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
+			dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
+			    strerror(errno));
+			return (dt_set_errno(dtp, errno));
+		}
+	}
+
+
+	return (ftp->ftps_noffs);
+}
+
+/*ARGSUSED*/
+int
+dt_pid_create_offset_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
+    fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, ulong_t off)
+{
+	if (off & 0x3)
+		return (DT_PROC_ALIGN);
+
+	ftp->ftps_type = DTFTP_OFFSETS;
+	ftp->ftps_pc = (uintptr_t)symp->st_value;
+	ftp->ftps_size = (size_t)symp->st_size;
+	ftp->ftps_noffs = 1;
+	ftp->ftps_offs[0] = off;
+
+	if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
+		dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
+		    strerror(errno));
+		return (dt_set_errno(dtp, errno));
+	}
+
+	return (1);
+}
+
+/*ARGSUSED*/
+int
+dt_pid_create_glob_offset_probes(struct ps_prochandle *P, dtrace_hdl_t *dtp,
+    fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, const char *pattern)
+{
+	ulong_t i;
+
+	ftp->ftps_type = DTFTP_OFFSETS;
+	ftp->ftps_pc = (uintptr_t)symp->st_value;
+	ftp->ftps_size = (size_t)symp->st_size;
+	ftp->ftps_noffs = 0;
+
+	/*
+	 * If we're matching against everything, just iterate through each
+	 * instruction in the function, otherwise look for matching offset
+	 * names by constructing the string and comparing it against the
+	 * pattern.
+	 */
+	if (strcmp("*", pattern) == 0) {
+		for (i = 0; i < symp->st_size; i += 4) {
+			ftp->ftps_offs[ftp->ftps_noffs++] = i;
+		}
+	} else {
+		char name[sizeof (i) * 2 + 1];
+
+		for (i = 0; i < symp->st_size; i += 4) {
+			(void) sprintf(name, "%lx", i);
+			if (gmatch(name, pattern))
+				ftp->ftps_offs[ftp->ftps_noffs++] = i;
+		}
+	}
+
+	if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
+		dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
+		    strerror(errno));
+		return (dt_set_errno(dtp, errno));
+	}
+
+	return (ftp->ftps_noffs);
+}
diff --git a/cddl/contrib/opensolaris/tools/ctf/cvt/ctf.c b/cddl/contrib/opensolaris/tools/ctf/cvt/ctf.c
index 82ec5fa..c6f47af 100644
--- a/cddl/contrib/opensolaris/tools/ctf/cvt/ctf.c
+++ b/cddl/contrib/opensolaris/tools/ctf/cvt/ctf.c
@@ -169,12 +169,12 @@ write_objects(iidesc_t *idp, ctf_buf_t *b)
 {
 	ushort_t id = (idp ? idp->ii_dtype->t_id : 0);
 
-	ctf_buf_write(b, &id, sizeof (id));
-
 	if (target_requires_swap) {
 		SWAP_16(id);
 	}
 
+	ctf_buf_write(b, &id, sizeof (id));
+
 	debug(3, "Wrote object %s (%d)\n", (idp ? idp->ii_name : "(null)"), id);
 }
 
diff --git a/cddl/lib/Makefile b/cddl/lib/Makefile
index 634d70e..955103e 100644
--- a/cddl/lib/Makefile
+++ b/cddl/lib/Makefile
@@ -27,7 +27,8 @@ _libzpool=	libzpool
 .endif
 
 .if ${MACHINE_ARCH} == "amd64" || ${MACHINE_ARCH} == "i386" || \
-	${MACHINE_CPUARCH} == "mips" || ${MACHINE_CPUARCH} == "powerpc"
+	${MACHINE_CPUARCH} == "mips" || ${MACHINE_CPUARCH} == "powerpc" || \
+	${MACHINE_CPUARCH} == "arm"
 _drti=		drti
 _libdtrace=	libdtrace
 .endif
diff --git a/cddl/lib/libdtrace/Makefile b/cddl/lib/libdtrace/Makefile
index 006740a..7678db6 100644
--- a/cddl/lib/libdtrace/Makefile
+++ b/cddl/lib/libdtrace/Makefile
@@ -81,6 +81,10 @@ CFLAGS+=	-I${OPENSOLARIS_SYS_DISTDIR}/uts/sparc
 CFLAGS+=	-I${OPENSOLARIS_SYS_DISTDIR}/uts/mips
 .PATH:		${.CURDIR}/../../../cddl/contrib/opensolaris/lib/libdtrace/mips
 .PATH:		${.CURDIR}/../../../sys/cddl/dev/dtrace/mips
+.elif ${MACHINE_CPUARCH} == "arm"
+CFLAGS+=	-I${OPENSOLARIS_SYS_DISTDIR}/uts/arm
+.PATH:		${.CURDIR}/../../../cddl/contrib/opensolaris/lib/libdtrace/arm
+.PATH:		${.CURDIR}/../../../sys/cddl/dev/dtrace/arm
 .elif ${MACHINE_CPUARCH} == "powerpc"
 CFLAGS+=	-I${OPENSOLARIS_SYS_DISTDIR}/uts/powerpc
 .PATH:		${.CURDIR}/../../../cddl/contrib/opensolaris/lib/libdtrace/powerpc
diff --git a/cddl/usr.sbin/Makefile b/cddl/usr.sbin/Makefile
index 0d34afd..73315ff 100644
--- a/cddl/usr.sbin/Makefile
+++ b/cddl/usr.sbin/Makefile
@@ -30,6 +30,12 @@ _plockstat=	plockstat
 .endif
 .endif
 
+.if ${MACHINE_CPUARCH} == "arm"
+_dtrace=	dtrace
+_dtruss=	dtruss
+_lockstat=	lockstat
+.endif
+
 .if ${MACHINE_CPUARCH} == "mips"
 _dtrace=	dtrace
 .endif