pa64-hpux-lib.h: New file.

libgcc/
	* config/pa/pa64-hpux-lib.h: New file.  
	(EH_FRAME_SECTION_NAME): Rename to __LIBGCC_EH_FRAME_SECTION_NAME__.
	(DTORS_SECTION_ASM_OP): Rename to __LIBGCC_DTORS_SECTION_ASM_OP__.
	* config.host (tm_file): Add pa/pa64-hpux-lib.h to tm_file on
	hppa*64*-*-hpux11*.
gcc/
	* config/pa/pa64-hpux.h (PA_INIT_FRAME_DUMMY_ASM_OP): Move to
	config/pa/pa64-hpux-lib.h.
	(PA_CRTBEGIN_HACK): Likewise.
	(DTOR_LIST_BEGIN): Likewise.

From-SVN: r241356

1 files changed, 101 insertions, 0 deletions

diff --git a/libgcc/config/pa/pa64-hpux-lib.h b/libgcc/config/pa/pa64-hpux-lib.h
new file mode 100644
index 00000000000..01ad35f3db1
--- /dev/null
+++ b/libgcc/config/pa/pa64-hpux-lib.h
@@ -0,0 +1,101 @@
+/* Definitions of target machine for GNU compiler, for HPs running
+   HP-UX using the 64bit runtime model.
+   Copyright (C) 1999-2016 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC 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, or (at your option)
+any later version.
+
+GCC 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 GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+/* We use DTOR_LIST_BEGIN to carry a bunch of hacks to allow us to use
+   the init and fini array sections with both the HP and GNU linkers.
+   The linkers setup the required dynamic entries in the dynamic segment
+   and the dynamic linker does the calls.  This approach avoids using
+   collect2.
+
+   The first hack is to implement __do_global_ctors_aux in crtbegin as
+   it needs to be the first entry in the init array so that it is called
+   last.  HP got the order of the init array backwards.  The DT_INIT_ARRAY
+   is supposed to be executed in the same order as the addresses appear in
+   the array.  DT_FINI_ARRAY is supposed to be executed in the opposite
+   order.
+
+   The second hack is a set of plabels to implement the effect of
+   CRT_CALL_STATIC_FUNCTION.  HP-UX 11 only supports DI_INIT_ARRAY and
+   DT_FINI_ARRAY and they put the arrays in .init and .fini, rather than
+   in .init_array and .fini_array.  The standard defines for .init and
+   .fini have the execute flag set.  So, the assembler has to be hacked
+   to munge the standard flags for these sections to make them agree
+   with what the HP linker expects.  With the GNU linker, we need to
+   used the .init_array and .fini_array sections.  So, we set up for
+   both just in case.  Once we have built the table, the linker does
+   the rest of the work.
+   The order is significant.  Placing __do_global_ctors_aux first in
+   the list, results in it being called last.  User specified initializers,
+   either using the linker +init command or a plabel, run before the
+   initializers specified here.  */
+
+/* We need to add frame_dummy to the initializer list if EH_FRAME_SECTION_NAME
+   is defined.  */
+#if defined(__LIBGCC_EH_FRAME_SECTION_NAME__)
+#define PA_INIT_FRAME_DUMMY_ASM_OP ".dword P%frame_dummy"
+#else
+#define PA_INIT_FRAME_DUMMY_ASM_OP ""
+#endif
+
+/* The following hack sets up the .init, .init_array, .fini and
+   .fini_array sections.  */
+#define PA_CRTBEGIN_HACK \
+asm (TEXT_SECTION_ASM_OP);                                              \
+static void __attribute__((used))                                       \
+__do_global_ctors_aux (void)                                            \
+{                                                                       \
+  func_ptr *p = __CTOR_LIST__;                                          \
+  while (*(p + 1))                                                      \
+    p++;                                                                \
+  for (; *p != (func_ptr) -1; p--)                                      \
+    (*p) ();                                                            \
+}                                                                       \
+                                                                        \
+asm (HP_INIT_ARRAY_SECTION_ASM_OP);                                     \
+asm (".align 8");                                                       \
+asm (".dword P%__do_global_ctors_aux");                                 \
+asm (PA_INIT_FRAME_DUMMY_ASM_OP);                                       \
+asm (GNU_INIT_ARRAY_SECTION_ASM_OP);                                    \
+asm (".align 8");                                                       \
+asm (".dword P%__do_global_ctors_aux");                                 \
+asm (PA_INIT_FRAME_DUMMY_ASM_OP);                                       \
+asm (HP_FINI_ARRAY_SECTION_ASM_OP);                                     \
+asm (".align 8");                                                       \
+asm (".dword P%__do_global_dtors_aux");                                 \
+asm (GNU_FINI_ARRAY_SECTION_ASM_OP);                                    \
+asm (".align 8");                                                       \
+asm (".dword P%__do_global_dtors_aux")
+
+/* The following two variants of DTOR_LIST_BEGIN are identical to those
+   in crtstuff.c except for the addition of the above crtbegin hack.  */
+#ifdef __LIBGCC_DTORS_SECTION_ASM_OP__
+#define DTOR_LIST_BEGIN \
+asm (DTORS_SECTION_ASM_OP);                                             \
+STATIC func_ptr __DTOR_LIST__[1]                                        \
+  __attribute__ ((aligned(sizeof(func_ptr))))                           \
+  = { (func_ptr) (-1) };                                                \
+PA_CRTBEGIN_HACK
+#else
+#define DTOR_LIST_BEGIN \
+STATIC func_ptr __DTOR_LIST__[1]                                        \
+  __attribute__ ((section(".dtors"), aligned(sizeof(func_ptr))))        \
+  = { (func_ptr) (-1) };                                                \
+PA_CRTBEGIN_HACK
+#endif