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authorRuslan Bukin <br@FreeBSD.org>2016-05-24 16:41:37 +0000
committerRuslan Bukin <br@FreeBSD.org>2016-05-24 16:41:37 +0000
commitfed1ca4b719c56c930f2259d80663cd34be812bb (patch)
treefeb92dec976736729312ea0213c4889dc1aaf414 /cddl/contrib/opensolaris/lib/libdtrace
parentfa851a8bfb6970d5aa7833c37a5d4d1d697883c2 (diff)
downloadsrc-fed1ca4b719c56c930f2259d80663cd34be812bb.tar.gz
src-fed1ca4b719c56c930f2259d80663cd34be812bb.zip
Add initial DTrace support for RISC-V.
Sponsored by: DARPA, AFRL Sponsored by: HEIF5
Notes
Notes: svn path=/head/; revision=300618
Diffstat (limited to 'cddl/contrib/opensolaris/lib/libdtrace')
-rw-r--r--cddl/contrib/opensolaris/lib/libdtrace/common/dt_link.c15
-rw-r--r--cddl/contrib/opensolaris/lib/libdtrace/common/dt_printf.c3
-rw-r--r--cddl/contrib/opensolaris/lib/libdtrace/riscv/dt_isadep.c139
3 files changed, 155 insertions, 2 deletions
diff --git a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_link.c b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_link.c
index f574cf763804..ba5919d9d6b7 100644
--- a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_link.c
+++ b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_link.c
@@ -250,6 +250,9 @@ printf("%s:%s(%d): DOODAD\n",__FUNCTION__,__FILE__,__LINE__);
dofr[j].dofr_offset + 4;
rel->r_info = ELF32_R_INFO(count + dep->de_global,
R_PPC_REL32);
+#elif defined(__riscv__)
+/* XXX */
+printf("%s:%s(%d): DOODAD\n",__FUNCTION__,__FILE__,__LINE__);
#elif defined(__sparc)
/*
* Add 4 bytes to hit the low half of this 64-bit
@@ -440,6 +443,8 @@ prepare_elf64(dtrace_hdl_t *dtp, const dof_hdr_t *dof, dof_elf64_t *dep)
dofr[j].dofr_offset;
rel->r_info = ELF64_R_INFO(count + dep->de_global,
R_PPC64_REL64);
+#elif defined(__riscv__)
+/* XXX */
#elif defined(__i386) || defined(__amd64)
rel->r_offset = s->dofs_offset +
dofr[j].dofr_offset;
@@ -935,7 +940,15 @@ dt_modtext(dtrace_hdl_t *dtp, char *p, int isenabled, GElf_Rela *rela,
return (0);
}
-
+#elif defined(__riscv__)
+/* XXX */
+static int
+dt_modtext(dtrace_hdl_t *dtp, char *p, int isenabled, GElf_Rela *rela,
+ uint32_t *off)
+{
+printf("%s:%s(%d): DOODAD\n",__FUNCTION__,__FILE__,__LINE__);
+ return (0);
+}
#elif defined(__sparc)
#define DT_OP_RET 0x81c7e008
diff --git a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_printf.c b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_printf.c
index d408aed45199..01659b517a91 100644
--- a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_printf.c
+++ b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_printf.c
@@ -310,7 +310,8 @@ pfprint_fp(dtrace_hdl_t *dtp, FILE *fp, const char *format,
case sizeof (double):
return (dt_printf(dtp, fp, format,
*((double *)addr) / n));
-#if !defined(__arm__) && !defined(__powerpc__) && !defined(__mips__)
+#if !defined(__arm__) && !defined(__powerpc__) && \
+ !defined(__mips__) && !defined(__riscv__)
case sizeof (long double):
return (dt_printf(dtp, fp, format,
*((long double *)addr) / ldn));
diff --git a/cddl/contrib/opensolaris/lib/libdtrace/riscv/dt_isadep.c b/cddl/contrib/opensolaris/lib/libdtrace/riscv/dt_isadep.c
new file mode 100644
index 000000000000..9f5af8570490
--- /dev/null
+++ b/cddl/contrib/opensolaris/lib/libdtrace/riscv/dt_isadep.c
@@ -0,0 +1,139 @@
+/*
+ * 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
+ * Copyright 2015 Ruslan Bukin <br@bsdpad.com>
+ */
+
+#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)
+#include <libproc_compat.h>
+#endif
+
+/*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)
+{
+
+ dt_dprintf("%s: unimplemented\n", __func__);
+
+ return (DT_PROC_ERR);
+}
+
+/*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 (!ALIGNED_POINTER(off, 4))
+ 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);
+}