+++ /dev/null
-From 05ee6bd2986c62d611ff9dfe6dbf11d2def0844b Mon Sep 17 00:00:00 2001
-From: Max Filippov <jcmvbkbc@gmail.com>
-Date: Sun, 4 Jan 2015 06:57:41 +0300
-Subject: [PATCH] xtensa: add xtensa support
-
-Signed-off-by: Max Filippov <jcmvbkbc@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@us.ibm.com
- D: s390 port
-
-+N: Max Filippov
-+E: jcmvbkbc@gmail.com
-+D: xtensa port
-+
- N: Roman Hodek
- E: Roman.Hodek@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, <e->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
-
projects / coffee / buildroot.git / commitdiff