From d4eb69fc4b50f9a0babd70b28d0601b40f31bd0f Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Thu, 2 Jul 2015 15:10:58 +0300
Subject: [PATCH] xtensa: implement NPTL helpers
These changes allow debugging multithreaded NPTL xtensa applications.
2015-08-20 Max Filippov <jcmvbkbc@gmail.com>
* configure.srv (xtensa*-*-linux*): Add srv_linux_thread_db=yes.
* linux-xtensa-low.c (arch/xtensa.h gdb_proc_service.h): New
(ps_get_thread_area): New function.
2015-08-20 Max Filippov <jcmvbkbc@gmail.com>
* arch/xtensa.h: New file.
* xtensa-linux-nat.c (gdb_proc_service.h): New #include.
(ps_get_thread_area): New function.
* xtensa-linux-tdep.c (xtensa_linux_init_abi): Add call to
set_gdbarch_fetch_tls_load_module_address to enable TLS support.
* xtensa-tdep.c (osabi.h): New #include.
(xtensa_gdbarch_init): Call gdbarch_init_osabi to register
* xtensa-tdep.h (struct xtensa_elf_gregset_t): Add threadptr
member and move the structure to arch/xtensa.h.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Backported from: 40045d91812b25c88c8275b8c08d27c234b68ba8
Changes to ChangeLog files are dropped.
gdb/arch/xtensa.h | 46 ++++++++++++++++++++++++++++++++++++++++
gdb/gdbserver/configure.srv | 1 +
gdb/gdbserver/linux-xtensa-low.c | 21 ++++++++++++++++++
gdb/xtensa-linux-nat.c | 22 ++++++++++++++++++
gdb/xtensa-linux-tdep.c | 4 ++++
gdb/xtensa-tdep.c | 4 ++++
gdb/xtensa-tdep.h | 24 ++------------------
7 files changed, 100 insertions(+), 22 deletions(-)
create mode 100644 gdb/arch/xtensa.h
diff --git a/gdb/arch/xtensa.h b/gdb/arch/xtensa.h
+/* Common Target-dependent code for the Xtensa port of GDB, the GNU debugger.
+ Copyright (C) 2003-2015 Free Software Foundation, Inc.
+ This file is part of GDB.
+ 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 3 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, see <http://www.gnu.org/licenses/>. */
+/* Xtensa ELF core file register set representation ('.reg' section).
+ Copied from target-side ELF header <xtensa/elf.h>. */
+typedef uint32_t xtensa_elf_greg_t;
+ xtensa_elf_greg_t lbeg;
+ xtensa_elf_greg_t lend;
+ xtensa_elf_greg_t lcount;
+ xtensa_elf_greg_t windowstart;
+ xtensa_elf_greg_t windowbase;
+ xtensa_elf_greg_t threadptr;
+ xtensa_elf_greg_t reserved[7+48];
+ xtensa_elf_greg_t ar[64];
+#define XTENSA_ELF_NGREG (sizeof (xtensa_elf_gregset_t) \
+ / sizeof (xtensa_elf_greg_t))