[Buildroot] [PATCH 1/2] ltrace: update to current master

Vicente Olivert Riera Vincent.Riera at imgtec.com
Mon May 25 14:52:38 UTC 2015


Lots of fixes have been made to ltrace, including the ones for fixing a
build failure for MIPS architecture. Updating to current master will
allow us to re-enable this package for MIPS and also remove some
upstreamed patches.

Signed-off-by: Vicente Olivert Riera <Vincent.Riera at imgtec.com>
---
 .../{0002-arm-plt.patch => 0001-arm-plt.patch}     |    0
 package/ltrace/0001-events.patch                   |   47 -
 package/ltrace/0003-PPC-fix-PPC32-build.patch      |   31 -
 .../ltrace/0004-xtensa-add-xtensa-support.patch    | 1612 --------------------
 package/ltrace/ltrace.mk                           |    2 +-
 5 files changed, 1 insertions(+), 1691 deletions(-)
 rename package/ltrace/{0002-arm-plt.patch => 0001-arm-plt.patch} (100%)
 delete mode 100644 package/ltrace/0001-events.patch
 delete mode 100644 package/ltrace/0003-PPC-fix-PPC32-build.patch
 delete mode 100644 package/ltrace/0004-xtensa-add-xtensa-support.patch

diff --git a/package/ltrace/0002-arm-plt.patch b/package/ltrace/0001-arm-plt.patch
similarity index 100%
rename from package/ltrace/0002-arm-plt.patch
rename to package/ltrace/0001-arm-plt.patch
diff --git a/package/ltrace/0001-events.patch b/package/ltrace/0001-events.patch
deleted file mode 100644
index f3699a1..0000000
--- a/package/ltrace/0001-events.patch
+++ /dev/null
@@ -1,47 +0,0 @@
-[PATCH] events.c: add similar system headers workaround as trace.c
-
-Needed for E.G. powerpc on uClibc.
-
-Signed-off-by: Peter Korsgaard <jacmet at sunsite.dk>
----
- sysdeps/linux-gnu/events.c |   27 +++++++++++++++++++++++++++
- 1 file changed, 27 insertions(+)
-
-Index: ltrace-0.6.0/sysdeps/linux-gnu/events.c
-===================================================================
---- ltrace-0.6.0.orig/sysdeps/linux-gnu/events.c
-+++ ltrace-0.6.0/sysdeps/linux-gnu/events.c
-@@ -11,6 +11,33 @@
- 
- #include "common.h"
- 
-+/* If the system headers did not provide the constants, hard-code the normal
-+   values.  */
-+#ifndef PTRACE_EVENT_FORK
-+
-+#define PTRACE_OLDSETOPTIONS    21
-+#define PTRACE_SETOPTIONS       0x4200
-+#define PTRACE_GETEVENTMSG      0x4201
-+
-+/* options set using PTRACE_SETOPTIONS */
-+#define PTRACE_O_TRACESYSGOOD   0x00000001
-+#define PTRACE_O_TRACEFORK      0x00000002
-+#define PTRACE_O_TRACEVFORK     0x00000004
-+#define PTRACE_O_TRACECLONE     0x00000008
-+#define PTRACE_O_TRACEEXEC      0x00000010
-+#define PTRACE_O_TRACEVFORKDONE 0x00000020
-+#define PTRACE_O_TRACEEXIT      0x00000040
-+
-+/* Wait extended result codes for the above trace options.  */
-+#define PTRACE_EVENT_FORK       1
-+#define PTRACE_EVENT_VFORK      2
-+#define PTRACE_EVENT_CLONE      3
-+#define PTRACE_EVENT_EXEC       4
-+#define PTRACE_EVENT_VFORK_DONE 5
-+#define PTRACE_EVENT_EXIT       6
-+
-+#endif /* PTRACE_EVENT_FORK */
-+
- static Event event;
- 
- Event *
diff --git a/package/ltrace/0003-PPC-fix-PPC32-build.patch b/package/ltrace/0003-PPC-fix-PPC32-build.patch
deleted file mode 100644
index 92055c9..0000000
--- a/package/ltrace/0003-PPC-fix-PPC32-build.patch
+++ /dev/null
@@ -1,31 +0,0 @@
-From c01c6dc017b5ae2b6de7b690725890642b6bf857 Mon Sep 17 00:00:00 2001
-From: Alexandre Belloni <alexandre.belloni at free-electrons.com>
-Date: Tue, 29 Jul 2014 11:01:31 +0200
-Subject: [PATCH] PPC: fix PPC32 build
-
-Compilation on PPC32 fails because STACK_FRAME_OVERHEAD is never defined
-in arch.h.
-
-Define it to 112 on that platform to restore the same behaviour as
-before commit eea4ad2cce289753aaa35b4e0258a76d8f8f367c.
-
-Signed-off-by: Alexandre Belloni <alexandre.belloni at free-electrons.com>
----
- sysdeps/linux-gnu/ppc/arch.h | 1 +
- 1 file changed, 1 insertion(+)
-
-diff --git a/sysdeps/linux-gnu/ppc/arch.h b/sysdeps/linux-gnu/ppc/arch.h
-index 7918a136b016..d5ad759a755c 100644
---- a/sysdeps/linux-gnu/ppc/arch.h
-+++ b/sysdeps/linux-gnu/ppc/arch.h
-@@ -57,6 +57,7 @@
- #else
- #define BREAKPOINT_VALUE { 0x7f, 0xe0, 0x00, 0x08 }
- #define ARCH_ENDIAN_BIG
-+# define STACK_FRAME_OVERHEAD 112
- # ifndef EF_PPC64_ABI
- # define EF_PPC64_ABI 3
- # endif
--- 
-1.9.1
-
diff --git a/package/ltrace/0004-xtensa-add-xtensa-support.patch b/package/ltrace/0004-xtensa-add-xtensa-support.patch
deleted file mode 100644
index 798a230..0000000
--- a/package/ltrace/0004-xtensa-add-xtensa-support.patch
+++ /dev/null
@@ -1,1612 +0,0 @@
-From 05ee6bd2986c62d611ff9dfe6dbf11d2def0844b Mon Sep 17 00:00:00 2001
-From: Max Filippov <jcmvbkbc at gmail.com>
-Date: Sun, 4 Jan 2015 06:57:41 +0300
-Subject: [PATCH] xtensa: add xtensa support
-
-Signed-off-by: Max Filippov <jcmvbkbc at gmail.com>
----
- CREDITS                               |   4 +
- NEWS                                  |   1 +
- README                                |   1 +
- configure.ac                          |   2 +
- sysdeps/linux-gnu/Makefile.am         |   2 +-
- sysdeps/linux-gnu/xtensa/Makefile.am  |  36 +++
- sysdeps/linux-gnu/xtensa/arch.h       | 111 ++++++++
- sysdeps/linux-gnu/xtensa/breakpoint.c |  71 ++++++
- sysdeps/linux-gnu/xtensa/fetch.c      | 188 ++++++++++++++
- sysdeps/linux-gnu/xtensa/plt.c        | 463 ++++++++++++++++++++++++++++++++++
- sysdeps/linux-gnu/xtensa/ptrace.h     |  21 ++
- sysdeps/linux-gnu/xtensa/regs.c       |  83 ++++++
- sysdeps/linux-gnu/xtensa/signalent.h  |  52 ++++
- sysdeps/linux-gnu/xtensa/syscallent.h | 357 ++++++++++++++++++++++++++
- sysdeps/linux-gnu/xtensa/trace.c      |  61 +++++
- 15 files changed, 1452 insertions(+), 1 deletion(-)
- create mode 100644 sysdeps/linux-gnu/xtensa/Makefile.am
- create mode 100644 sysdeps/linux-gnu/xtensa/arch.h
- create mode 100644 sysdeps/linux-gnu/xtensa/breakpoint.c
- create mode 100644 sysdeps/linux-gnu/xtensa/fetch.c
- create mode 100644 sysdeps/linux-gnu/xtensa/plt.c
- create mode 100644 sysdeps/linux-gnu/xtensa/ptrace.h
- create mode 100644 sysdeps/linux-gnu/xtensa/regs.c
- create mode 100644 sysdeps/linux-gnu/xtensa/signalent.h
- create mode 100644 sysdeps/linux-gnu/xtensa/syscallent.h
- create mode 100644 sysdeps/linux-gnu/xtensa/trace.c
-
-diff --git a/CREDITS b/CREDITS
-index c85eb76..67f1761 100644
---- a/CREDITS
-+++ b/CREDITS
-@@ -61,6 +61,10 @@ N: Timothy Fesig
- E: slate at us.ibm.com
- D: s390 port
- 
-+N: Max Filippov
-+E: jcmvbkbc at gmail.com
-+D: xtensa port
-+
- N: Roman Hodek
- E: Roman.Hodek at informatik.uni-erlangen.de
- D: m68k port
-diff --git a/NEWS b/NEWS
-index 71d3a1f..a8e83f1 100644
---- a/NEWS
-+++ b/NEWS
-@@ -38,6 +38,7 @@
-      binaries, as currently there's no 32-bit userspace available for
-      ARM64 processors.
-    - Imagination Technologies Meta is now supported.
-+   - Cadence Tensilica Xtensa is now supported.
- 
-    - On Linux, tracing of IFUNC symbols is supported.  On i386,
-      x86_64, ppc32 with secure PLT and ppc64, IRELATIVE PLT slots are
-diff --git a/README b/README
-index a04b767..a38e8dc 100644
---- a/README
-+++ b/README
-@@ -37,6 +37,7 @@ to test each release comprehensively on each target.
- 	s390-*-linux-gnu
- 	s390x-*-linux-gnu
- 	x86_64-*-linux-gnu
-+	xtensa-*-linux-gnu
- 
- The following systems were supported at some point in past, but
- current status is unknown:
-diff --git a/configure.ac b/configure.ac
-index 4f360c8..55c5c84 100644
---- a/configure.ac
-+++ b/configure.ac
-@@ -47,6 +47,7 @@ case "${host_cpu}" in
-     sun4u|sparc64)	HOST_CPU="sparc" ;;
-     s390x)		HOST_CPU="s390" ;;
-     i?86|x86_64)	HOST_CPU="x86" ;;
-+    xtensa*)		HOST_CPU="xtensa" ;;
-     *)			HOST_CPU="${host_cpu}" ;;
- esac
- AC_SUBST(HOST_CPU)
-@@ -412,6 +413,7 @@ AC_CONFIG_FILES([
- 	sysdeps/linux-gnu/s390/Makefile
- 	sysdeps/linux-gnu/sparc/Makefile
- 	sysdeps/linux-gnu/x86/Makefile
-+	sysdeps/linux-gnu/xtensa/Makefile
- 	testsuite/Makefile
- 	testsuite/ltrace.main/Makefile
- 	testsuite/ltrace.minor/Makefile
-diff --git a/sysdeps/linux-gnu/Makefile.am b/sysdeps/linux-gnu/Makefile.am
-index ec26162..857f2da 100644
---- a/sysdeps/linux-gnu/Makefile.am
-+++ b/sysdeps/linux-gnu/Makefile.am
-@@ -18,7 +18,7 @@
- # 02110-1301 USA
- 
- DIST_SUBDIRS = aarch64 alpha arm cris ia64 m68k metag mips ppc s390	\
--	       sparc x86
-+	       sparc x86 xtensa
- 
- SUBDIRS = \
- 	$(HOST_CPU)
-diff --git a/sysdeps/linux-gnu/xtensa/Makefile.am b/sysdeps/linux-gnu/xtensa/Makefile.am
-new file mode 100644
-index 0000000..9ce81e1
---- /dev/null
-+++ b/sysdeps/linux-gnu/xtensa/Makefile.am
-@@ -0,0 +1,36 @@
-+# This file is part of ltrace.
-+# Copyright (C) 2014 Cadence Design Systems Inc.
-+#
-+# This program is free software; you can redistribute it and/or
-+# modify it under the terms of the GNU General Public License as
-+# published by the Free Software Foundation; either version 2 of the
-+# License, or (at your option) any later version.
-+#
-+# This program is distributed in the hope that it will be useful, but
-+# WITHOUT ANY WARRANTY; without even the implied warranty of
-+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+# General Public License for more details.
-+#
-+# You should have received a copy of the GNU General Public License
-+# along with this program; if not, write to the Free Software
-+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-+# 02110-1301 USA
-+
-+noinst_LTLIBRARIES = \
-+	../libcpu.la
-+
-+___libcpu_la_SOURCES = \
-+	breakpoint.c \
-+	fetch.c \
-+	plt.c \
-+	regs.c \
-+	trace.c
-+
-+noinst_HEADERS = \
-+	arch.h \
-+	ptrace.h \
-+	signalent.h \
-+	syscallent.h
-+
-+MAINTAINERCLEANFILES = \
-+	Makefile.in
-diff --git a/sysdeps/linux-gnu/xtensa/arch.h b/sysdeps/linux-gnu/xtensa/arch.h
-new file mode 100644
-index 0000000..c4d300a
---- /dev/null
-+++ b/sysdeps/linux-gnu/xtensa/arch.h
-@@ -0,0 +1,111 @@
-+/*
-+ * This file is part of ltrace.
-+ * Copyright (C) 2014 Cadence Design Systems Inc.
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License as
-+ * published by the Free Software Foundation; either version 2 of the
-+ * License, or (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful, but
-+ * WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+ * General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-+ * 02110-1301 USA
-+ */
-+
-+#include <gelf.h>
-+
-+#ifdef __XTENSA_EL__
-+
-+# define ARCH_ENDIAN_LITTLE
-+
-+# define BREAKPOINT_VALUE { 0x00, 0x41, 0x00 }
-+# define DENSITY_BREAKPOINT_VALUE { 0x2d, 0xf1 }
-+
-+# define XTENSA_OP0_MASK 0xf
-+# define XTENSA_DENSITY_FIRST 0x8
-+# define XTENSA_DENSITY_LAST 0xe
-+# define XTENSA_SYSCALL_MASK 0xffffff
-+# define XTENSA_SYSCALL_VALUE 0x005000
-+# define XTENSA_ENTRY_MASK 0xff
-+# define XTENSA_ENTRY_VALUE 0x36
-+
-+#elif defined(__XTENSA_EB__)
-+
-+# define ARCH_ENDIAN_BIG
-+
-+# define BREAKPOINT_VALUE { 0x00, 0x14, 0x00 }
-+# define DENSITY_BREAKPOINT_VALUE { 0xd2, 0x1f }
-+
-+# define XTENSA_OP0_MASK 0xf0
-+# define XTENSA_DENSITY_FIRST 0x80
-+# define XTENSA_DENSITY_LAST 0xe0
-+# define XTENSA_SYSCALL_MASK 0xffffff00
-+# define XTENSA_SYSCALL_VALUE 0x00050000
-+# define XTENSA_ENTRY_MASK 0xff000000
-+# define XTENSA_ENTRY_VALUE 0x63000000
-+
-+#else
-+# error __XTENSA_EL__ or __XTENSA_EB__ must be defined
-+#endif
-+
-+#define BREAKPOINT_LENGTH 3
-+#define DENSITY_BREAKPOINT_LENGTH 2
-+
-+#define DECR_PC_AFTER_BREAK 0
-+
-+#define LT_ELFCLASS	ELFCLASS32
-+#define LT_ELF_MACHINE	EM_XTENSA
-+
-+static inline int is_density(const void *p)
-+{
-+	const unsigned char *bytes = p;
-+	return (bytes[0] & XTENSA_OP0_MASK) >= XTENSA_DENSITY_FIRST &&
-+		(bytes[0] & XTENSA_OP0_MASK) < XTENSA_DENSITY_LAST;
-+}
-+
-+#define ARCH_HAVE_LTELF_DATA
-+struct arch_ltelf_data {
-+};
-+
-+enum xtensa_plt_type {
-+	XTENSA_DEFAULT,
-+	XTENSA_PLT_UNRESOLVED,
-+	XTENSA_PLT_RESOLVED,
-+};
-+
-+#define ARCH_HAVE_LIBRARY_DATA
-+struct arch_library_data {
-+	GElf_Addr loadable_sz;
-+};
-+
-+#define ARCH_HAVE_LIBRARY_SYMBOL_DATA
-+struct arch_library_symbol_data {
-+	enum xtensa_plt_type type;
-+	GElf_Addr resolved_addr;
-+};
-+
-+#define ARCH_HAVE_BREAKPOINT_DATA
-+struct arch_breakpoint_data {
-+};
-+
-+#define ARCH_HAVE_PROCESS_DATA
-+struct arch_process_data {
-+	/* Breakpoint that hits when the dynamic linker is about to
-+	 * update a .plt slot.  NULL before that address is known.  */
-+	struct breakpoint *dl_plt_update_bp;
-+
-+	/* PLT update breakpoint looks here for the handler.  */
-+	struct process_stopping_handler *handler;
-+};
-+
-+#define ARCH_HAVE_ADD_PLT_ENTRY
-+#define ARCH_HAVE_DYNLINK_DONE
-+#define ARCH_HAVE_ENABLE_BREAKPOINT
-+#define ARCH_HAVE_GET_SYMINFO
-+#define ARCH_HAVE_FETCH_ARG
-diff --git a/sysdeps/linux-gnu/xtensa/breakpoint.c b/sysdeps/linux-gnu/xtensa/breakpoint.c
-new file mode 100644
-index 0000000..256d1dd
---- /dev/null
-+++ b/sysdeps/linux-gnu/xtensa/breakpoint.c
-@@ -0,0 +1,71 @@
-+/*
-+ * This file is part of ltrace.
-+ * Copyright (C) 2014 Cadence Design Systems Inc.
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License as
-+ * published by the Free Software Foundation; either version 2 of the
-+ * License, or (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful, but
-+ * WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+ * General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-+ * 02110-1301 USA
-+ */
-+
-+#include "config.h"
-+
-+#include <sys/ptrace.h>
-+#include <errno.h>
-+#include <string.h>
-+#include <stdio.h>
-+
-+#include "common.h"
-+#include "backend.h"
-+#include "sysdep.h"
-+#include "breakpoint.h"
-+#include "proc.h"
-+#include "library.h"
-+
-+void
-+arch_enable_breakpoint(pid_t pid, struct breakpoint *sbp)
-+{
-+	static unsigned char break_insn[] = BREAKPOINT_VALUE;
-+	static unsigned char density_break_insn[] = DENSITY_BREAKPOINT_VALUE;
-+	unsigned char *bytes;
-+	long a;
-+
-+	debug(DEBUG_PROCESS,
-+	      "arch_enable_breakpoint: pid=%d, addr=%p, symbol=%s",
-+	      pid, sbp->addr, breakpoint_name(sbp));
-+
-+	errno = 0;
-+	a = ptrace(PTRACE_PEEKTEXT, pid, sbp->addr, 0);
-+	if (a == -1 && errno) {
-+		fprintf(stderr, "enable_breakpoint"
-+			" pid=%d, addr=%p, symbol=%s: %s\n",
-+			pid, sbp->addr, breakpoint_name(sbp),
-+			strerror(errno));
-+		return;
-+	}
-+	bytes = (unsigned char *)&a;
-+	memcpy(sbp->orig_value, bytes, BREAKPOINT_LENGTH);
-+	if (is_density(bytes)) {
-+		memcpy(bytes, density_break_insn, DENSITY_BREAKPOINT_LENGTH);
-+	} else {
-+		memcpy(bytes, break_insn, BREAKPOINT_LENGTH);
-+	}
-+	a = ptrace(PTRACE_POKETEXT, pid, sbp->addr, a);
-+	if (a == -1) {
-+		fprintf(stderr, "enable_breakpoint"
-+			" pid=%d, addr=%p, symbol=%s: %s\n",
-+			pid, sbp->addr, breakpoint_name(sbp),
-+			strerror(errno));
-+		return;
-+	}
-+}
-diff --git a/sysdeps/linux-gnu/xtensa/fetch.c b/sysdeps/linux-gnu/xtensa/fetch.c
-new file mode 100644
-index 0000000..c211ac5
---- /dev/null
-+++ b/sysdeps/linux-gnu/xtensa/fetch.c
-@@ -0,0 +1,188 @@
-+/*
-+ * This file is part of ltrace.
-+ * Copyright (C) 2014 Cadence Design Systems Inc.
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License as
-+ * published by the Free Software Foundation; either version 2 of the
-+ * License, or (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful, but
-+ * WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+ * General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-+ * 02110-1301 USA
-+ */
-+
-+#include <sys/ptrace.h>
-+#include <asm/ptrace.h>
-+#include <assert.h>
-+#include <elf.h>
-+#include <libelf.h>
-+#include <stdint.h>
-+#include <stdio.h>
-+#include <stdlib.h>
-+#include <string.h>
-+#include <stdbool.h>
-+
-+#include "backend.h"
-+#include "fetch.h"
-+#include "library.h"
-+#include "proc.h"
-+#include "ptrace.h"
-+#include "type.h"
-+#include "value.h"
-+
-+enum {
-+	MAX_REG_ARG_WORDS = 6,
-+	REG_ARG_BASE_REG = 2,
-+
-+	MAX_RETURN_WORDS = 4,
-+	RETURN_BASE_REG = 10,
-+	SYSCALL_RETURN_BASE_REG = 2,
-+};
-+
-+struct fetch_context {
-+	unsigned arg_word_idx;
-+	arch_addr_t sp;
-+	arch_addr_t ret_struct;
-+
-+};
-+
-+struct fetch_context *
-+arch_fetch_arg_init(enum tof type, struct process *proc,
-+		    struct arg_type_info *ret_info)
-+{
-+	struct fetch_context *ctx = malloc(sizeof(*ctx));
-+	size_t ret_sz = type_sizeof(proc, ret_info);
-+	unsigned long sp = ptrace(PTRACE_PEEKUSER, proc->pid,
-+				  (REG_A_BASE + 1), 0);
-+
-+	if (ctx == NULL || sp == (size_t)-1) {
-+		free(ctx);
-+		return NULL;
-+	}
-+
-+	ctx->arg_word_idx = 0;
-+	ctx->sp = (arch_addr_t)sp;
-+	ctx->ret_struct = NULL;
-+
-+	if (ret_sz > MAX_RETURN_WORDS * sizeof(long)) {
-+		unsigned long a2 = ptrace(PTRACE_PEEKUSER, proc->pid,
-+					  (REG_A_BASE + 2), 0);
-+		ctx->ret_struct = (arch_addr_t)a2;
-+		++ctx->arg_word_idx;
-+	}
-+
-+	return ctx;
-+}
-+
-+struct fetch_context *
-+arch_fetch_arg_clone(struct process *proc,
-+		     struct fetch_context *ctx)
-+{
-+	struct fetch_context *clone = malloc(sizeof(*ctx));
-+
-+	if (clone == NULL)
-+		return NULL;
-+	*clone = *ctx;
-+	return clone;
-+}
-+
-+int
-+arch_fetch_arg_next(struct fetch_context *ctx, enum tof type,
-+		    struct process *proc,
-+		    struct arg_type_info *info, struct value *valuep)
-+{
-+	size_t sz = type_sizeof(proc, info);
-+	size_t al = type_alignof(proc, info);
-+	size_t words = (sz + sizeof(long) - 1) / sizeof(long);
-+
-+	assert(sz != (size_t)-1);
-+	assert(al != (size_t)-1);
-+
-+	if (al > sizeof(long)) {
-+		al /= sizeof(long);
-+		ctx->arg_word_idx = (ctx->arg_word_idx + al - 1) & ~(al - 1);
-+	}
-+
-+	if (ctx->arg_word_idx + words <= MAX_REG_ARG_WORDS) {
-+		size_t i;
-+		unsigned char *data = value_reserve(valuep, sz);
-+
-+		if (data == NULL)
-+			return -1;
-+
-+		for (i = 0; i < words; ++i) {
-+			static const unsigned syscall_reg[] = {
-+				6, 3, 4, 5, 8, 9
-+			};
-+			unsigned regnr =
-+				(type == LT_TOF_FUNCTION ?
-+				 REG_ARG_BASE_REG + ctx->arg_word_idx + i :
-+				 syscall_reg[ctx->arg_word_idx + i]);
-+			unsigned long a = ptrace(PTRACE_PEEKUSER, proc->pid,
-+						 (REG_A_BASE + regnr), 0);
-+			size_t copy = sizeof(a) < sz ? sizeof(a) : sz;
-+
-+			memcpy(data, &a, copy);
-+			data += sizeof(long);
-+			sz -= copy;
-+		}
-+		ctx->arg_word_idx += words;
-+		return 0;
-+	} else if (ctx->arg_word_idx < MAX_REG_ARG_WORDS) {
-+		ctx->arg_word_idx = MAX_REG_ARG_WORDS;
-+	}
-+
-+	value_in_inferior(valuep, ctx->sp + sizeof(long) *
-+			  (ctx->arg_word_idx - MAX_REG_ARG_WORDS));
-+	ctx->arg_word_idx += words;
-+
-+	return 0;
-+}
-+
-+int
-+arch_fetch_retval(struct fetch_context *ctx, enum tof type,
-+		  struct process *proc, struct arg_type_info *info,
-+		  struct value *valuep)
-+{
-+	size_t sz = type_sizeof(proc, info);
-+	size_t words = (sz + sizeof(long) - 1) / sizeof(long);
-+
-+	assert(sz != (size_t)-1);
-+
-+	if (words <= MAX_RETURN_WORDS) {
-+		size_t i;
-+		unsigned char *data = value_reserve(valuep, sz);
-+
-+		if (data == NULL)
-+			return -1;
-+
-+		for (i = 0; i < words; ++i) {
-+			unsigned regnr = i +
-+				(type == LT_TOF_FUNCTIONR ?
-+				 RETURN_BASE_REG : SYSCALL_RETURN_BASE_REG);
-+			unsigned long a = ptrace(PTRACE_PEEKUSER, proc->pid,
-+						 (REG_A_BASE + regnr), 0);
-+			size_t copy = sizeof(a) < sz ? sizeof(a) : sz;
-+
-+			memcpy(data, &a, copy);
-+			data += sizeof(long);
-+			sz -= copy;
-+		}
-+	} else {
-+		value_in_inferior(valuep, ctx->ret_struct);
-+	}
-+	return 0;
-+}
-+
-+void
-+arch_fetch_arg_done(struct fetch_context *context)
-+{
-+	free(context);
-+}
-diff --git a/sysdeps/linux-gnu/xtensa/plt.c b/sysdeps/linux-gnu/xtensa/plt.c
-new file mode 100644
-index 0000000..dd0a0f1
---- /dev/null
-+++ b/sysdeps/linux-gnu/xtensa/plt.c
-@@ -0,0 +1,463 @@
-+/*
-+ * This file is part of ltrace.
-+ * Copyright (C) 2014 Cadence Design Systems Inc.
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License as
-+ * published by the Free Software Foundation; either version 2 of the
-+ * License, or (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful, but
-+ * WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+ * General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-+ * 02110-1301 USA
-+ */
-+
-+#include <errno.h>
-+#include <error.h>
-+#include <gelf.h>
-+#include <inttypes.h>
-+#include <string.h>
-+#include <sys/ptrace.h>
-+
-+#include "common.h"
-+#include "debug.h"
-+#include "proc.h"
-+#include "library.h"
-+#include "breakpoint.h"
-+#include "backend.h"
-+#include "trace.h"
-+
-+static void
-+mark_as_resolved(struct process *proc, struct library_symbol *libsym,
-+		 GElf_Addr value)
-+{
-+	arch_addr_t addr = (arch_addr_t)(intptr_t)libsym->arch.resolved_addr;
-+	struct breakpoint *bp = insert_breakpoint_at(proc, addr, libsym);
-+
-+	if (bp != NULL) {
-+		enable_breakpoint(proc, bp);
-+	}
-+	libsym->arch.type = XTENSA_PLT_RESOLVED;
-+	libsym->arch.resolved_addr = value;
-+}
-+
-+static int
-+read_plt_slot_value(struct process *proc, arch_addr_t addr, GElf_Addr *valp)
-+{
-+	long l = ptrace(PTRACE_PEEKTEXT, proc->pid, addr);
-+
-+	if (l < 0) {
-+		debug(DEBUG_EVENT, "ptrace .plt slot value @%p: %s",
-+		      addr, strerror(errno));
-+		return -1;
-+	}
-+
-+	*valp = (GElf_Addr)l;
-+	return 0;
-+}
-+
-+static int
-+unresolve_plt_slot(struct process *proc, arch_addr_t addr, GElf_Addr value)
-+{
-+	if (ptrace(PTRACE_POKETEXT, proc->pid, addr,
-+		   (void *)(intptr_t)value) < 0) {
-+		debug(DEBUG_EVENT, "failed to unresolve .plt slot @%p: %s",
-+		      addr, strerror(errno));
-+		return -1;
-+	}
-+	return 0;
-+}
-+
-+int
-+arch_elf_init(struct ltelf *lte, struct library *lib)
-+{
-+	Elf_Scn *scn;
-+	GElf_Shdr shdr;
-+	GElf_Addr relplt_addr;
-+	GElf_Phdr phdr;
-+	GElf_Addr low, high;
-+	int has_loadable = 0;
-+	size_t i;
-+
-+	for (i = 0; gelf_getphdr(lte->elf, i, &phdr) != NULL; ++i) {
-+		if (phdr.p_type == PT_LOAD) {
-+			if (has_loadable) {
-+				if (phdr.p_vaddr < low)
-+					low = phdr.p_vaddr;
-+				if (phdr.p_vaddr + phdr.p_memsz > high)
-+					high = phdr.p_vaddr + phdr.p_memsz;
-+			} else {
-+				has_loadable = 1;
-+				low = phdr.p_vaddr;
-+				high = phdr.p_vaddr + phdr.p_memsz;
-+			}
-+		}
-+	}
-+	lib->arch.loadable_sz = has_loadable ? high - low : 0;
-+
-+	if (elf_load_dynamic_entry(lte, DT_JMPREL, &relplt_addr) < 0 ||
-+	    elf_get_section_covering(lte, relplt_addr, &scn, &shdr) < 0 ||
-+	    scn == NULL)
-+		return 0;
-+
-+	if (elf_read_relocs(lte, scn, &shdr, &lte->plt_relocs) < 0) {
-+		fprintf(stderr, "Couldn't get .rel*.plt data: %s\n",
-+			elf_errmsg(-1));
-+		return -1;
-+	}
-+	return 0;
-+}
-+
-+void
-+arch_elf_destroy(struct ltelf *lte)
-+{
-+}
-+
-+int
-+arch_get_sym_info(struct ltelf *lte, const char *filename,
-+		  size_t sym_index, GElf_Rela *rela, GElf_Sym *sym)
-+{
-+	if (gelf_getsym(lte->dynsym, ELF64_R_SYM(rela->r_info), sym) == NULL)
-+		return -1;
-+
-+	/* .rela.plt entries that reference locally defined functions point
-+	 * to their entry points directly, not to PLT entries.  Skip such
-+	 * symbols.  */
-+	if (sym->st_shndx != SHN_UNDEF) {
-+		const char *name = lte->dynstr + sym->st_name;
-+		debug(2, "symbol %s does not have plt entry", name);
-+		return 1;
-+	}
-+
-+	return 0;
-+}
-+
-+enum plt_status
-+arch_elf_add_plt_entry(struct process *proc, struct ltelf *lte,
-+		       const char *name, GElf_Rela *rela, size_t ndx,
-+		       struct library_symbol **ret)
-+{
-+	if (default_elf_add_plt_entry(proc, lte, name, rela, ndx, ret) < 0) {
-+		return PLT_FAIL;
-+	}
-+
-+	/* All PLT library symbols are initially marked as delayed.  Some of
-+	 * them may reference weak symbols that are never loaded, sym2addr for
-+	 * such entries will return NULL.  All other symbols are activated
-+	 * after the dynlink is done.  */
-+	(*ret)->delayed = 1;
-+	return PLT_OK;
-+}
-+
-+void
-+arch_dynlink_done(struct process *proc)
-+{
-+	struct library_symbol *libsym = NULL;
-+
-+	while ((libsym = proc_each_symbol(proc, libsym,
-+					  library_symbol_delayed_cb, NULL))) {
-+		assert(libsym->plt_type == LS_TOPLT_EXEC);
-+
-+		if (read_plt_slot_value(proc, libsym->enter_addr,
-+					&libsym->arch.resolved_addr) == 0 &&
-+		    libsym->arch.resolved_addr) {
-+			GElf_Addr base =
-+				(GElf_Addr)(intptr_t)libsym->lib->base;
-+			GElf_Addr sz = libsym->lib->arch.loadable_sz;
-+
-+			/* Some references may be resolved at this point, they
-+			 * will point outside the loadable area of their own
-+			 * library.  */
-+			if (libsym->arch.resolved_addr >= base &&
-+			    libsym->arch.resolved_addr - base < sz) {
-+				libsym->arch.type = XTENSA_PLT_UNRESOLVED;
-+				proc_activate_delayed_symbol(proc, libsym);
-+			} else {
-+				libsym->arch.type = XTENSA_PLT_RESOLVED;
-+			}
-+		}
-+	}
-+}
-+
-+GElf_Addr arch_plt_sym_val(struct ltelf *lte, size_t ndx, GElf_Rela * rela)
-+{
-+	return rela->r_offset;
-+}
-+
-+void *sym2addr(struct process *proc, struct library_symbol *sym)
-+{
-+	void *addr = NULL;
-+	long ret = ptrace(PTRACE_PEEKTEXT, proc->pid, sym->enter_addr, 0);
-+
-+	switch (sym->plt_type) {
-+	case LS_TOPLT_NONE:
-+		addr = sym->enter_addr;
-+
-+		/* Not every exported function starts with ENTRY instruction,
-+		 * e.g. _start does not.  Only skip first instruction if it's
-+		 * entry, otherwise don't do it: if the first instruction is
-+		 * FLIX or density it will break it or the following
-+		 * instruction.  */
-+		if ((ret & XTENSA_ENTRY_MASK) == XTENSA_ENTRY_VALUE) {
-+			addr += 3;
-+		}
-+		break;
-+
-+	case LS_TOPLT_EXEC:
-+
-+		/* OTOH every PLT entry starts with ENTRY.  Put initial
-+		 * breakpoint after it.  After symbol resolution put
-+		 * additional breakpoint at the first instruction.  */
-+		addr = (ret == -1 || ret == 0) ? NULL : (void *)(ret + 3);
-+		break;
-+	}
-+	return addr;
-+}
-+
-+int
-+arch_library_symbol_init(struct library_symbol *libsym)
-+{
-+	libsym->arch.type = XTENSA_DEFAULT;
-+	return 0;
-+}
-+
-+void
-+arch_library_symbol_destroy(struct library_symbol *libsym)
-+{
-+}
-+
-+int
-+arch_library_symbol_clone(struct library_symbol *retp,
-+			  struct library_symbol *libsym)
-+{
-+	retp->arch = libsym->arch;
-+	return 0;
-+}
-+
-+static void
-+dl_plt_update_bp_on_hit(struct breakpoint *bp, struct process *proc)
-+{
-+	debug(DEBUG_PROCESS, "pid=%d dl_plt_update_bp_on_hit %s(%p)",
-+	      proc->pid, breakpoint_name(bp), bp->addr);
-+	struct process_stopping_handler *self = proc->arch.handler;
-+	assert(self != NULL);
-+
-+	struct library_symbol *libsym = self->breakpoint_being_enabled->libsym;
-+	GElf_Addr value;
-+	if (read_plt_slot_value(proc, libsym->enter_addr, &value) < 0)
-+		return;
-+
-+	unresolve_plt_slot(proc, libsym->enter_addr,
-+			   libsym->arch.resolved_addr);
-+	mark_as_resolved(proc, libsym, value);
-+
-+	/* cb_on_all_stopped looks if HANDLER is set to NULL as a way
-+	 * to check that this was run.  It's an error if it
-+	 * wasn't.  */
-+	proc->arch.handler = NULL;
-+
-+	breakpoint_turn_off(bp, proc);
-+}
-+
-+static enum callback_status
-+cb_keep_stepping_p(struct process_stopping_handler *self)
-+{
-+	struct process *proc = self->task_enabling_breakpoint;
-+	struct library_symbol *libsym = self->breakpoint_being_enabled->libsym;
-+
-+	GElf_Addr value;
-+	if (read_plt_slot_value(proc, libsym->enter_addr, &value) < 0)
-+		return CBS_FAIL;
-+
-+	/* In UNRESOLVED state, the resolved_addr in fact contains
-+	 * the PLT entry value.  */
-+	if (value == libsym->arch.resolved_addr) {
-+		/* Don't try to single-step over our own breakpoint infinitely.
-+		 * This may happen if we fail to detect resolved PLT entry.  */
-+		if (address2bpstruct(proc, get_instruction_pointer(proc))) {
-+			return CBS_FAIL;
-+		}
-+		return CBS_CONT;
-+	}
-+
-+	debug(DEBUG_PROCESS, "pid=%d PLT got resolved to value %#"PRIx64,
-+	      proc->pid, value);
-+
-+	/* The .plt slot got resolved!  We can migrate the breakpoint
-+	 * to RESOLVED and stop single-stepping.  */
-+	if (unresolve_plt_slot(proc, libsym->enter_addr,
-+			       libsym->arch.resolved_addr) < 0)
-+		return CBS_FAIL;
-+
-+	/* Install breakpoint to the address where the change takes
-+	 * place.  If we fail, then that just means that we'll have to
-+	 * singlestep the next time around as well.  */
-+	struct process *leader = proc->leader;
-+	if (leader == NULL || leader->arch.dl_plt_update_bp != NULL)
-+		goto done;
-+
-+	arch_addr_t addr = get_instruction_pointer(proc);
-+	struct breakpoint *dl_plt_update_bp =
-+		insert_breakpoint_at(proc, addr, NULL);
-+	if (dl_plt_update_bp == NULL)
-+		goto done;
-+
-+	leader->arch.dl_plt_update_bp = dl_plt_update_bp;
-+
-+	static struct bp_callbacks dl_plt_update_cbs = {
-+		.on_hit = dl_plt_update_bp_on_hit,
-+	};
-+	breakpoint_set_callbacks(dl_plt_update_bp, &dl_plt_update_cbs);
-+
-+	/* Turn it off for now.  We will turn it on again when we hit
-+	 * the PLT entry that needs this.  */
-+	breakpoint_turn_off(dl_plt_update_bp, proc);
-+
-+done:
-+	mark_as_resolved(proc, libsym, value);
-+
-+	return CBS_STOP;
-+}
-+
-+static void
-+cb_on_all_stopped(struct process_stopping_handler *self)
-+{
-+	/* Put that in for dl_plt_update_bp_on_hit to see.  */
-+	assert(self->task_enabling_breakpoint->arch.handler == NULL);
-+	self->task_enabling_breakpoint->arch.handler = self;
-+
-+	linux_ptrace_disable_and_continue(self);
-+}
-+
-+static void
-+xtensa_plt_bp_hit(struct breakpoint *bp, struct process *proc)
-+{
-+	struct library_symbol *libsym = bp->libsym;
-+
-+	if (libsym->arch.type == XTENSA_PLT_RESOLVED) {
-+		arch_addr_t addr =
-+			(arch_addr_t)(intptr_t)libsym->arch.resolved_addr;
-+
-+		set_instruction_pointer(proc, addr);
-+		ptrace(PTRACE_SINGLESTEP, proc->pid, NULL, NULL);
-+		return;
-+	}
-+}
-+
-+static void
-+xtensa_plt_bp_continue(struct breakpoint *bp, struct process *proc)
-+{
-+	struct process *leader = proc->leader;
-+	void (*on_all_stopped)(struct process_stopping_handler *) = NULL;
-+	enum callback_status (*keep_stepping_p)
-+		(struct process_stopping_handler *) = NULL;
-+
-+	if (bp->libsym->arch.type != XTENSA_PLT_UNRESOLVED) {
-+		continue_process(proc->pid);
-+		return;
-+	}
-+
-+	if (leader != NULL && leader->arch.dl_plt_update_bp != NULL &&
-+	    breakpoint_turn_on(leader->arch.dl_plt_update_bp, proc) >= 0) {
-+		on_all_stopped = cb_on_all_stopped;
-+	} else {
-+		keep_stepping_p = cb_keep_stepping_p;
-+	}
-+
-+	if (process_install_stopping_handler(proc, bp, on_all_stopped,
-+					     keep_stepping_p, NULL) < 0) {
-+		fprintf(stderr,	"%s: couldn't install event handler\n",
-+			__func__);
-+		continue_after_breakpoint(proc, bp);
-+	}
-+}
-+
-+/* For some symbol types, we need to set up custom callbacks.
-+ */
-+int
-+arch_breakpoint_init(struct process *proc, struct breakpoint *bp)
-+{
-+	/* Artificial and entry-point breakpoints are plain.  */
-+	if (bp->libsym == NULL || bp->libsym->plt_type != LS_TOPLT_EXEC)
-+		return 0;
-+
-+	static struct bp_callbacks cbs = {
-+		.on_hit = xtensa_plt_bp_hit,
-+		.on_continue = xtensa_plt_bp_continue,
-+	};
-+	breakpoint_set_callbacks(bp, &cbs);
-+
-+	return 0;
-+}
-+
-+void
-+arch_breakpoint_destroy(struct breakpoint *bp)
-+{
-+}
-+
-+int
-+arch_breakpoint_clone(struct breakpoint *retp, struct breakpoint *sbp)
-+{
-+	retp->arch = sbp->arch;
-+	return 0;
-+}
-+
-+int
-+arch_process_init(struct process *proc)
-+{
-+	proc->arch.dl_plt_update_bp = NULL;
-+	return 0;
-+}
-+
-+void
-+arch_process_destroy(struct process *proc)
-+{
-+}
-+
-+int
-+arch_process_clone(struct process *retp, struct process *proc)
-+{
-+	retp->arch = proc->arch;
-+
-+	if (retp->arch.dl_plt_update_bp != NULL) {
-+		/* Point it to the corresponding breakpoint in RETP.
-+		 * It must be there, this part of PROC has already
-+		 * been cloned to RETP.  */
-+		retp->arch.dl_plt_update_bp
-+			= address2bpstruct(retp,
-+					   retp->arch.dl_plt_update_bp->addr);
-+
-+		assert(retp->arch.dl_plt_update_bp != NULL);
-+	}
-+
-+	return 0;
-+}
-+
-+int
-+arch_process_exec(struct process *proc)
-+{
-+	return arch_process_init(proc);
-+}
-+
-+int
-+arch_library_init(struct library *lib)
-+{
-+	return 0;
-+}
-+
-+void
-+arch_library_destroy(struct library *lib)
-+{
-+}
-+
-+int
-+arch_library_clone(struct library *retp, struct library *lib)
-+{
-+	return 0;
-+}
-diff --git a/sysdeps/linux-gnu/xtensa/ptrace.h b/sysdeps/linux-gnu/xtensa/ptrace.h
-new file mode 100644
-index 0000000..6e67fff
---- /dev/null
-+++ b/sysdeps/linux-gnu/xtensa/ptrace.h
-@@ -0,0 +1,21 @@
-+/*
-+ * This file is part of ltrace.
-+ * Copyright (C) 2014 Cadence Design Systems Inc.
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License as
-+ * published by the Free Software Foundation; either version 2 of the
-+ * License, or (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful, but
-+ * WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+ * General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-+ * 02110-1301 USA
-+ */
-+
-+#include <sys/ptrace.h>
-diff --git a/sysdeps/linux-gnu/xtensa/regs.c b/sysdeps/linux-gnu/xtensa/regs.c
-new file mode 100644
-index 0000000..a5a8c8d
---- /dev/null
-+++ b/sysdeps/linux-gnu/xtensa/regs.c
-@@ -0,0 +1,83 @@
-+/*
-+ * This file is part of ltrace.
-+ * Copyright (C) 2014 Cadence Design Systems Inc.
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License as
-+ * published by the Free Software Foundation; either version 2 of the
-+ * License, or (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful, but
-+ * WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+ * General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-+ * 02110-1301 USA
-+ */
-+
-+#include "config.h"
-+
-+#include <errno.h>
-+#include <string.h>
-+#include <sys/types.h>
-+#include <sys/ptrace.h>
-+#include <asm/ptrace.h>
-+
-+#include "proc.h"
-+#include "common.h"
-+
-+static int xtensa_peek_user(struct process *proc, unsigned addr,
-+			    unsigned long *res)
-+{
-+	long retval;
-+
-+	errno = 0;
-+	retval = ptrace(PTRACE_PEEKUSER, proc->pid, addr, 0);
-+	if (retval == -1 && errno) {
-+		fprintf(stderr, "%s: pid=%d, %s\n",
-+			__func__, proc->pid, strerror(errno));
-+		*res = 0;
-+		return 0;
-+	}
-+	*res = retval;
-+	return 1;
-+}
-+
-+void *get_instruction_pointer(struct process *proc)
-+{
-+	unsigned long res;
-+
-+	if (xtensa_peek_user(proc, REG_PC, &res))
-+		return (void *)res;
-+	else
-+		return NULL;
-+}
-+
-+void set_instruction_pointer(struct process *proc, void *addr)
-+{
-+	ptrace(PTRACE_POKEUSER, proc->pid, REG_PC, addr);
-+}
-+
-+void *get_stack_pointer(struct process *proc)
-+{
-+	unsigned long res;
-+
-+	if (xtensa_peek_user(proc, REG_A_BASE + 1, &res))
-+		return (void *)res;
-+	else
-+		return NULL;
-+}
-+
-+void *get_return_addr(struct process *proc, void *stack_pointer)
-+{
-+	unsigned long res;
-+
-+	if (xtensa_peek_user(proc, REG_A_BASE, &res))
-+		/* Assume call8, mask the upper 2 bits. */
-+		return (void *)(0x3FFFFFFF & res);
-+	else
-+		return NULL;
-+}
-diff --git a/sysdeps/linux-gnu/xtensa/signalent.h b/sysdeps/linux-gnu/xtensa/signalent.h
-new file mode 100644
-index 0000000..953534d
---- /dev/null
-+++ b/sysdeps/linux-gnu/xtensa/signalent.h
-@@ -0,0 +1,52 @@
-+/*
-+ * This file is part of ltrace.
-+ * Copyright (C) 2014 Cadence Design Systems Inc.
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License as
-+ * published by the Free Software Foundation; either version 2 of the
-+ * License, or (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful, but
-+ * WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+ * General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-+ * 02110-1301 USA
-+ */
-+
-+	"SIG_0",           /* 0 */
-+	"SIGHUP",          /* 1 */
-+	"SIGINT",          /* 2 */
-+	"SIGQUIT",         /* 3 */
-+	"SIGILL",          /* 4 */
-+	"SIGTRAP",         /* 5 */
-+	"SIGABRT",         /* 6 */
-+	"SIGBUS",          /* 7 */
-+	"SIGFPE",          /* 8 */
-+	"SIGKILL",         /* 9 */
-+	"SIGUSR1",         /* 10 */
-+	"SIGSEGV",         /* 11 */
-+	"SIGUSR2",         /* 12 */
-+	"SIGPIPE",         /* 13 */
-+	"SIGALRM",         /* 14 */
-+	"SIGTERM",         /* 15 */
-+	"SIGSTKFLT",       /* 16 */
-+	"SIGCHLD",         /* 17 */
-+	"SIGCONT",         /* 18 */
-+	"SIGSTOP",         /* 19 */
-+	"SIGTSTP",         /* 20 */
-+	"SIGTTIN",         /* 21 */
-+	"SIGTTOU",         /* 22 */
-+	"SIGURG",          /* 23 */
-+	"SIGXCPU",         /* 24 */
-+	"SIGXFSZ",         /* 25 */
-+	"SIGVTALRM",       /* 26 */
-+	"SIGPROF",         /* 27 */
-+	"SIGWINCH",        /* 28 */
-+	"SIGIO",           /* 29 */
-+	"SIGPWR",          /* 30 */
-+	"SIGSYS",          /* 31 */
-diff --git a/sysdeps/linux-gnu/xtensa/syscallent.h b/sysdeps/linux-gnu/xtensa/syscallent.h
-new file mode 100644
-index 0000000..ff19d83
---- /dev/null
-+++ b/sysdeps/linux-gnu/xtensa/syscallent.h
-@@ -0,0 +1,357 @@
-+/*
-+ * This file is part of ltrace.
-+ * Copyright (C) 2014 Cadence Design Systems Inc.
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License as
-+ * published by the Free Software Foundation; either version 2 of the
-+ * License, or (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful, but
-+ * WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+ * General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-+ * 02110-1301 USA
-+ */
-+
-+	"spill",                           /* 0 */
-+	"xtensa",                          /* 1 */
-+	"available4",                      /* 2 */
-+	"available5",                      /* 3 */
-+	"available6",                      /* 4 */
-+	"available7",                      /* 5 */
-+	"available8",                      /* 6 */
-+	"available9",                      /* 7 */
-+	"open",                            /* 8 */
-+	"close",                           /* 9 */
-+	"dup",                             /* 10 */
-+	"dup2",                            /* 11 */
-+	"read",                            /* 12 */
-+	"write",                           /* 13 */
-+	"select",                          /* 14 */
-+	"lseek",                           /* 15 */
-+	"poll",                            /* 16 */
-+	"_llseek",                         /* 17 */
-+	"epoll_wait",                      /* 18 */
-+	"epoll_ctl",                       /* 19 */
-+	"epoll_create",                    /* 20 */
-+	"creat",                           /* 21 */
-+	"truncate",                        /* 22 */
-+	"ftruncate",                       /* 23 */
-+	"readv",                           /* 24 */
-+	"writev",                          /* 25 */
-+	"fsync",                           /* 26 */
-+	"fdatasync",                       /* 27 */
-+	"truncate64",                      /* 28 */
-+	"ftruncate64",                     /* 29 */
-+	"pread64",                         /* 30 */
-+	"pwrite64",                        /* 31 */
-+	"link",                            /* 32 */
-+	"rename",                          /* 33 */
-+	"symlink",                         /* 34 */
-+	"readlink",                        /* 35 */
-+	"mknod",                           /* 36 */
-+	"pipe",                            /* 37 */
-+	"unlink",                          /* 38 */
-+	"rmdir",                           /* 39 */
-+	"mkdir",                           /* 40 */
-+	"chdir",                           /* 41 */
-+	"fchdir",                          /* 42 */
-+	"getcwd",                          /* 43 */
-+	"chmod",                           /* 44 */
-+	"chown",                           /* 45 */
-+	"stat",                            /* 46 */
-+	"stat64",                          /* 47 */
-+	"lchown",                          /* 48 */
-+	"lstat",                           /* 49 */
-+	"lstat64",                         /* 50 */
-+	"available51",                     /* 51 */
-+	"fchmod",                          /* 52 */
-+	"fchown",                          /* 53 */
-+	"fstat",                           /* 54 */
-+	"fstat64",                         /* 55 */
-+	"flock",                           /* 56 */
-+	"access",                          /* 57 */
-+	"umask",                           /* 58 */
-+	"getdents",                        /* 59 */
-+	"getdents64",                      /* 60 */
-+	"fcntl64",                         /* 61 */
-+	"available62",                     /* 62 */
-+	"fadvise64_64",                    /* 63 */
-+	"utime",                           /* 64 */
-+	"utimes",                          /* 65 */
-+	"ioctl",                           /* 66 */
-+	"fcntl",                           /* 67 */
-+	"setxattr",                        /* 68 */
-+	"getxattr",                        /* 69 */
-+	"listxattr",                       /* 70 */
-+	"removexattr",                     /* 71 */
-+	"lsetxattr",                       /* 72 */
-+	"lgetxattr",                       /* 73 */
-+	"llistxattr",                      /* 74 */
-+	"lremovexattr",                    /* 75 */
-+	"fsetxattr",                       /* 76 */
-+	"fgetxattr",                       /* 77 */
-+	"flistxattr",                      /* 78 */
-+	"fremovexattr",                    /* 79 */
-+	"mmap2",                           /* 80 */
-+	"munmap",                          /* 81 */
-+	"mprotect",                        /* 82 */
-+	"brk",                             /* 83 */
-+	"mlock",                           /* 84 */
-+	"munlock",                         /* 85 */
-+	"mlockall",                        /* 86 */
-+	"munlockall",                      /* 87 */
-+	"mremap",                          /* 88 */
-+	"msync",                           /* 89 */
-+	"mincore",                         /* 90 */
-+	"madvise",                         /* 91 */
-+	"shmget",                          /* 92 */
-+	"shmat",                           /* 93 */
-+	"shmctl",                          /* 94 */
-+	"shmdt",                           /* 95 */
-+	"socket",                          /* 96 */
-+	"setsockopt",                      /* 97 */
-+	"getsockopt",                      /* 98 */
-+	"shutdown",                        /* 99 */
-+	"bind",                            /* 100 */
-+	"connect",                         /* 101 */
-+	"listen",                          /* 102 */
-+	"accept",                          /* 103 */
-+	"getsockname",                     /* 104 */
-+	"getpeername",                     /* 105 */
-+	"sendmsg",                         /* 106 */
-+	"recvmsg",                         /* 107 */
-+	"send",                            /* 108 */
-+	"recv",                            /* 109 */
-+	"sendto",                          /* 110 */
-+	"recvfrom",                        /* 111 */
-+	"socketpair",                      /* 112 */
-+	"sendfile",                        /* 113 */
-+	"sendfile64",                      /* 114 */
-+	"sendmmsg",                        /* 115 */
-+	"clone",                           /* 116 */
-+	"execve",                          /* 117 */
-+	"exit",                            /* 118 */
-+	"exit_group",                      /* 119 */
-+	"getpid",                          /* 120 */
-+	"wait4",                           /* 121 */
-+	"waitid",                          /* 122 */
-+	"kill",                            /* 123 */
-+	"tkill",                           /* 124 */
-+	"tgkill",                          /* 125 */
-+	"set_tid_address",                 /* 126 */
-+	"gettid",                          /* 127 */
-+	"setsid",                          /* 128 */
-+	"getsid",                          /* 129 */
-+	"prctl",                           /* 130 */
-+	"personality",                     /* 131 */
-+	"getpriority",                     /* 132 */
-+	"setpriority",                     /* 133 */
-+	"setitimer",                       /* 134 */
-+	"getitimer",                       /* 135 */
-+	"setuid",                          /* 136 */
-+	"getuid",                          /* 137 */
-+	"setgid",                          /* 138 */
-+	"getgid",                          /* 139 */
-+	"geteuid",                         /* 140 */
-+	"getegid",                         /* 141 */
-+	"setreuid",                        /* 142 */
-+	"setregid",                        /* 143 */
-+	"setresuid",                       /* 144 */
-+	"getresuid",                       /* 145 */
-+	"setresgid",                       /* 146 */
-+	"getresgid",                       /* 147 */
-+	"setpgid",                         /* 148 */
-+	"getpgid",                         /* 149 */
-+	"getppid",                         /* 150 */
-+	"getpgrp",                         /* 151 */
-+	"reserved152",                     /* 152 */
-+	"reserved153",                     /* 153 */
-+	"times",                           /* 154 */
-+	"acct",                            /* 155 */
-+	"sched_setaffinity",               /* 156 */
-+	"sched_getaffinity",               /* 157 */
-+	"capget",                          /* 158 */
-+	"capset",                          /* 159 */
-+	"ptrace",                          /* 160 */
-+	"semtimedop",                      /* 161 */
-+	"semget",                          /* 162 */
-+	"semop",                           /* 163 */
-+	"semctl",                          /* 164 */
-+	"available165",                    /* 165 */
-+	"msgget",                          /* 166 */
-+	"msgsnd",                          /* 167 */
-+	"msgrcv",                          /* 168 */
-+	"msgctl",                          /* 169 */
-+	"available170",                    /* 170 */
-+	"umount2",                         /* 171 */
-+	"mount",                           /* 172 */
-+	"swapon",                          /* 173 */
-+	"chroot",                          /* 174 */
-+	"pivot_root",                      /* 175 */
-+	"umount",                          /* 176 */
-+	"swapoff",                         /* 177 */
-+	"sync",                            /* 178 */
-+	"syncfs",                          /* 179 */
-+	"setfsuid",                        /* 180 */
-+	"setfsgid",                        /* 181 */
-+	"sysfs",                           /* 182 */
-+	"ustat",                           /* 183 */
-+	"statfs",                          /* 184 */
-+	"fstatfs",                         /* 185 */
-+	"statfs64",                        /* 186 */
-+	"fstatfs64",                       /* 187 */
-+	"setrlimit",                       /* 188 */
-+	"getrlimit",                       /* 189 */
-+	"getrusage",                       /* 190 */
-+	"futex",                           /* 191 */
-+	"gettimeofday",                    /* 192 */
-+	"settimeofday",                    /* 193 */
-+	"adjtimex",                        /* 194 */
-+	"nanosleep",                       /* 195 */
-+	"getgroups",                       /* 196 */
-+	"setgroups",                       /* 197 */
-+	"sethostname",                     /* 198 */
-+	"setdomainname",                   /* 199 */
-+	"syslog",                          /* 200 */
-+	"vhangup",                         /* 201 */
-+	"uselib",                          /* 202 */
-+	"reboot",                          /* 203 */
-+	"quotactl",                        /* 204 */
-+	"nfsservctl",                      /* 205 */
-+	"_sysctl",                         /* 206 */
-+	"bdflush",                         /* 207 */
-+	"uname",                           /* 208 */
-+	"sysinfo",                         /* 209 */
-+	"init_module",                     /* 210 */
-+	"delete_module",                   /* 211 */
-+	"sched_setparam",                  /* 212 */
-+	"sched_getparam",                  /* 213 */
-+	"sched_setscheduler",              /* 214 */
-+	"sched_getscheduler",              /* 215 */
-+	"sched_get_priority_max",          /* 216 */
-+	"sched_get_priority_min",          /* 217 */
-+	"sched_rr_get_interval",           /* 218 */
-+	"sched_yield",                     /* 219 */
-+	"220",                             /* 220 */
-+	"221",                             /* 221 */
-+	"available222",                    /* 222 */
-+	"restart_syscall",                 /* 223 */
-+	"sigaltstack",                     /* 224 */
-+	"rt_sigreturn",                    /* 225 */
-+	"rt_sigaction",                    /* 226 */
-+	"rt_sigprocmask",                  /* 227 */
-+	"rt_sigpending",                   /* 228 */
-+	"rt_sigtimedwait",                 /* 229 */
-+	"rt_sigqueueinfo",                 /* 230 */
-+	"rt_sigsuspend",                   /* 231 */
-+	"mq_open",                         /* 232 */
-+	"mq_unlink",                       /* 233 */
-+	"mq_timedsend",                    /* 234 */
-+	"mq_timedreceive",                 /* 235 */
-+	"mq_notify",                       /* 236 */
-+	"mq_getsetattr",                   /* 237 */
-+	"available238",                    /* 238 */
-+	"io_setup",                        /* 239 */
-+	"io_destroy",                      /* 240 */
-+	"io_submit",                       /* 241 */
-+	"io_getevents",                    /* 242 */
-+	"io_cancel",                       /* 243 */
-+	"clock_settime",                   /* 244 */
-+	"clock_gettime",                   /* 245 */
-+	"clock_getres",                    /* 246 */
-+	"clock_nanosleep",                 /* 247 */
-+	"timer_create",                    /* 248 */
-+	"timer_delete",                    /* 249 */
-+	"timer_settime",                   /* 250 */
-+	"timer_gettime",                   /* 251 */
-+	"timer_getoverrun",                /* 252 */
-+	"reserved253",                     /* 253 */
-+	"lookup_dcookie",                  /* 254 */
-+	"available255",                    /* 255 */
-+	"add_key",                         /* 256 */
-+	"request_key",                     /* 257 */
-+	"keyctl",                          /* 258 */
-+	"available259",                    /* 259 */
-+	"readahead",                       /* 260 */
-+	"remap_file_pages",                /* 261 */
-+	"migrate_pages",                   /* 262 */
-+	"mbind",                           /* 263 */
-+	"get_mempolicy",                   /* 264 */
-+	"set_mempolicy",                   /* 265 */
-+	"unshare",                         /* 266 */
-+	"move_pages",                      /* 267 */
-+	"splice",                          /* 268 */
-+	"tee",                             /* 269 */
-+	"vmsplice",                        /* 270 */
-+	"available271",                    /* 271 */
-+	"pselect6",                        /* 272 */
-+	"ppoll",                           /* 273 */
-+	"epoll_pwait",                     /* 274 */
-+	"epoll_create1",                   /* 275 */
-+	"inotify_init",                    /* 276 */
-+	"inotify_add_watch",               /* 277 */
-+	"inotify_rm_watch",                /* 278 */
-+	"inotify_init1",                   /* 279 */
-+	"getcpu",                          /* 280 */
-+	"kexec_load",                      /* 281 */
-+	"ioprio_set",                      /* 282 */
-+	"ioprio_get",                      /* 283 */
-+	"set_robust_list",                 /* 284 */
-+	"get_robust_list",                 /* 285 */
-+	"available286",                    /* 286 */
-+	"available287",                    /* 287 */
-+	"openat",                          /* 288 */
-+	"mkdirat",                         /* 289 */
-+	"mknodat",                         /* 290 */
-+	"unlinkat",                        /* 291 */
-+	"renameat",                        /* 292 */
-+	"linkat",                          /* 293 */
-+	"symlinkat",                       /* 294 */
-+	"readlinkat",                      /* 295 */
-+	"utimensat",                       /* 296 */
-+	"fchownat",                        /* 297 */
-+	"futimesat",                       /* 298 */
-+	"fstatat64",                       /* 299 */
-+	"fchmodat",                        /* 300 */
-+	"faccessat",                       /* 301 */
-+	"available302",                    /* 302 */
-+	"available303",                    /* 303 */
-+	"signalfd",                        /* 304 */
-+	"305",                             /* 305 */
-+	"eventfd",                         /* 306 */
-+	"recvmmsg",                        /* 307 */
-+	"setns",                           /* 308 */
-+	"signalfd4",                       /* 309 */
-+	"dup3",                            /* 310 */
-+	"pipe2",                           /* 311 */
-+	"timerfd_create",                  /* 312 */
-+	"timerfd_settime",                 /* 313 */
-+	"timerfd_gettime",                 /* 314 */
-+	"available315",                    /* 315 */
-+	"eventfd2",                        /* 316 */
-+	"preadv",                          /* 317 */
-+	"pwritev",                         /* 318 */
-+	"available319",                    /* 319 */
-+	"fanotify_init",                   /* 320 */
-+	"fanotify_mark",                   /* 321 */
-+	"process_vm_readv",                /* 322 */
-+	"process_vm_writev",               /* 323 */
-+	"name_to_handle_at",               /* 324 */
-+	"open_by_handle_at",               /* 325 */
-+	"sync_file_range",                 /* 326 */
-+	"perf_event_open",                 /* 327 */
-+	"rt_tgsigqueueinfo",               /* 328 */
-+	"clock_adjtime",                   /* 329 */
-+	"prlimit64",                       /* 330 */
-+	"kcmp",                            /* 331 */
-+	"finit_module",                    /* 332 */
-+	"accept4",                         /* 333 */
-+	"sched_setattr",                   /* 334 */
-+	"sched_getattr",                   /* 335 */
-+	"syscall_count",                   /* 336 */
-diff --git a/sysdeps/linux-gnu/xtensa/trace.c b/sysdeps/linux-gnu/xtensa/trace.c
-new file mode 100644
-index 0000000..c7d3077
---- /dev/null
-+++ b/sysdeps/linux-gnu/xtensa/trace.c
-@@ -0,0 +1,61 @@
-+/*
-+ * This file is part of ltrace.
-+ * Copyright (C) 2014 Cadence Design Systems Inc.
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License as
-+ * published by the Free Software Foundation; either version 2 of the
-+ * License, or (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful, but
-+ * WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+ * General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-+ * 02110-1301 USA
-+ */
-+
-+#include "config.h"
-+
-+#include <sys/types.h>
-+#include <sys/wait.h>
-+#include <signal.h>
-+#include <sys/ptrace.h>
-+#include <asm/ptrace.h>
-+
-+#include "common.h"
-+#include "proc.h"
-+
-+void
-+get_arch_dep(struct process *proc)
-+{
-+}
-+
-+/* Returns 1 if syscall, 2 if sysret, 0 otherwise.  */
-+int syscall_p(struct process *proc, int status, int *sysnum)
-+{
-+	if (WIFSTOPPED(status)
-+	    && WSTOPSIG(status) == (SIGTRAP | proc->tracesysgood)) {
-+		/* get the user's pc */
-+		int pc = ptrace(PTRACE_PEEKUSER, proc->pid, REG_PC, 0);
-+
-+		/* fetch the SWI instruction */
-+		int insn = ptrace(PTRACE_PEEKTEXT, proc->pid, pc - 3, 0);
-+
-+		*sysnum = ptrace(PTRACE_PEEKUSER, proc->pid, SYSCALL_NR, 0);
-+		/* if it is a syscall, return 1 or 2 */
-+		if ((insn & XTENSA_SYSCALL_MASK) == XTENSA_SYSCALL_VALUE) {
-+			if ((proc->callstack_depth > 0)
-+			    && proc->callstack[proc->callstack_depth
-+					       - 1].is_syscall) {
-+				return 2;
-+			} else {
-+				return 1;
-+			}
-+		}
-+	}
-+	return 0;
-+}
--- 
-1.8.1.4
-
diff --git a/package/ltrace/ltrace.mk b/package/ltrace/ltrace.mk
index 7f00ce3..8a78a2a 100644
--- a/package/ltrace/ltrace.mk
+++ b/package/ltrace/ltrace.mk
@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LTRACE_VERSION = 0896ce554f80afdcba81d9754f6104f863dea803
+LTRACE_VERSION = be0c6870e08a3be43b3a0d210fb8dc7614b1e82f
 LTRACE_SITE = git://anonscm.debian.org/collab-maint/ltrace.git
 LTRACE_DEPENDENCIES = elfutils
 LTRACE_CONF_OPTS = --disable-werror
-- 
1.7.1



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