Add TileGx platform support to libunwind.

"make check" passed.
======================================================
All 34 tests behaved as expected (2 expected failures)
======================================================
Zhi-Gang Liu @ Tilera

1 files changed, 161 insertions, 0 deletions

diff --git a/include/libunwind-tilegx.h b/include/libunwind-tilegx.h
new file mode 100644
index 00000000..0f84ea65
--- /dev/null
+++ b/include/libunwind-tilegx.h
@@ -0,0 +1,161 @@
+/* libunwind - a platform-independent unwind library
+   Copyright (C) 2008 CodeSourcery
+   Copyright (C) 2014 Tilera Corp.
+
+This file is part of libunwind.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
+
+#ifndef LIBUNWIND_H
+#define LIBUNWIND_H
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+#include <inttypes.h>
+#include <ucontext.h>
+
+#define UNW_TARGET           tilegx
+#define UNW_TARGET_TILEGX    1
+
+#define _U_TDEP_QP_TRUE        0    /* see libunwind-dynamic.h  */
+
+/* This needs to be big enough to accommodate "struct cursor", while
+   leaving some slack for future expansion.  Changing this value will
+   require recompiling all users of this library.  Stack allocation is
+   relatively cheap and unwind-state copying is relatively rare, so we
+   want to err on making it rather too big than too small.  */
+
+#define UNW_TDEP_CURSOR_LEN   4096
+
+/* The size of a "word" varies on TILEGX.  This type is used for memory
+   addresses and register values. */
+typedef uint64_t unw_word_t;
+typedef int64_t unw_sword_t;
+
+typedef long double unw_tdep_fpreg_t;
+
+typedef enum
+{
+  UNW_TILEGX_R0,
+  UNW_TILEGX_R1,
+  UNW_TILEGX_R2,
+  UNW_TILEGX_R3,
+  UNW_TILEGX_R4,
+  UNW_TILEGX_R5,
+  UNW_TILEGX_R6,
+  UNW_TILEGX_R7,
+  UNW_TILEGX_R8,
+  UNW_TILEGX_R9,
+  UNW_TILEGX_R10,
+  UNW_TILEGX_R11,
+  UNW_TILEGX_R12,
+  UNW_TILEGX_R13,
+  UNW_TILEGX_R14,
+  UNW_TILEGX_R15,
+  UNW_TILEGX_R16,
+  UNW_TILEGX_R17,
+  UNW_TILEGX_R18,
+  UNW_TILEGX_R19,
+  UNW_TILEGX_R20,
+  UNW_TILEGX_R21,
+  UNW_TILEGX_R22,
+  UNW_TILEGX_R23,
+  UNW_TILEGX_R24,
+  UNW_TILEGX_R25,
+  UNW_TILEGX_R26,
+  UNW_TILEGX_R27,
+  UNW_TILEGX_R28,
+  UNW_TILEGX_R29,
+  UNW_TILEGX_R30,
+  UNW_TILEGX_R31,
+  UNW_TILEGX_R32,
+  UNW_TILEGX_R33,
+  UNW_TILEGX_R34,
+  UNW_TILEGX_R35,
+  UNW_TILEGX_R36,
+  UNW_TILEGX_R37,
+  UNW_TILEGX_R38,
+  UNW_TILEGX_R39,
+  UNW_TILEGX_R40,
+  UNW_TILEGX_R41,
+  UNW_TILEGX_R42,
+  UNW_TILEGX_R43,
+  UNW_TILEGX_R44,
+  UNW_TILEGX_R45,
+  UNW_TILEGX_R46,
+  UNW_TILEGX_R47,
+  UNW_TILEGX_R48,
+  UNW_TILEGX_R49,
+  UNW_TILEGX_R50,
+  UNW_TILEGX_R51,
+  UNW_TILEGX_R52,
+  UNW_TILEGX_R53,
+  UNW_TILEGX_R54,
+  UNW_TILEGX_R55,
+
+  /* FIXME: Other registers!  */
+
+  UNW_TILEGX_PC,
+  /* For TILEGX, the CFA is the value of SP (r54) at the call site in the
+     previous frame.  */
+  UNW_TILEGX_CFA,
+
+  UNW_TDEP_LAST_REG = UNW_TILEGX_PC,
+
+  UNW_TDEP_IP = UNW_TILEGX_R55,  /* R55 is link register for Tilegx */
+  UNW_TDEP_SP = UNW_TILEGX_R54,
+  UNW_TDEP_EH = UNW_TILEGX_R0   /* FIXME.  */
+} tilegx_regnum_t;
+
+typedef enum
+{
+  UNW_TILEGX_ABI_N64 = 2
+} tilegx_abi_t;
+
+#define UNW_TDEP_NUM_EH_REGS    2   /* FIXME for TILEGX.  */
+
+typedef struct unw_tdep_save_loc
+{
+  /* Additional target-dependent info on a save location.  */
+} unw_tdep_save_loc_t;
+
+typedef ucontext_t unw_tdep_context_t;
+
+#include "libunwind-dynamic.h"
+
+typedef struct
+{
+    /* no tilegx-specific auxiliary proc-info */
+} unw_tdep_proc_info_t;
+
+#include "libunwind-common.h"
+
+#define unw_tdep_getcontext  getcontext
+
+#define unw_tdep_is_fpreg    UNW_ARCH_OBJ(is_fpreg)
+extern int unw_tdep_is_fpreg (int);
+
+#if defined(__cplusplus) || defined(c_plusplus)
+}
+#endif
+
+#endif /* LIBUNWIND_H */