* c-pch.c (c_common_no_more_pch): Update for gt_pch_use_address

        extra arguments.
        * config.host (*-*-solaris2*, *-*-linux*): Add out_host_hook_obj
        and host_xmake_file fragments.
        * ggc-common.c (gt_pch_save): Update for gt_pch_get_address change.
        (gt_pch_restore): Similarly for gt_pch_use_address.
        (default_gt_pch_get_address): New.
        (mmap_gt_pch_get_address): Split out of gt_pch_save.
        (default_gt_pch_use_address): Split out of gt_pch_restore.
        (mmap_gt_pch_use_address): Likewise.
        * hooks.c (hook_voidp_size_t_null): Remove.
        (hook_bool_voidp_size_t_false): Remove.
        * hooks.h: Likewise.
        * hosthooks-def.h (HOST_HOOKS_GT_PCH_GET_ADDRESS): Use one of the
        default_ or mmap_ definitions.
        (HOST_HOOKS_GT_PCH_USE_ADDRESS): Likewise.
        * hosthooks.h (struct host_hooks): Update gt_pch_get_address
        and gt_pch_use_address.
        * config/host-linux.c, config/host-solaris.c: New files.
        * config/x-linux, config/x-solaris: New files.
        * config/rs6000/host-darwin.c darwin_rs6000_gt_pch_get_address):
        Update for changed definition.
        (darwin_rs6000_gt_pch_use_address): Likewise.
        * doc/hostconfig.texi: Update docs.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@79295 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 79 insertions, 0 deletions

diff --git a/gcc/config/host-solaris.c b/gcc/config/host-solaris.c
new file mode 100644
index 00000000000..43efc5c23e9
--- /dev/null
+++ b/gcc/config/host-solaris.c
@@ -0,0 +1,79 @@
+/* Solaris host-specific hook definitions.
+   Copyright (C) 2004 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 2, 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 COPYING.  If not, write to the
+   Free Software Foundation, 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include <sys/mman.h>
+#include "hosthooks.h"
+#include "hosthooks-def.h"
+
+
+#undef HOST_HOOKS_GT_PCH_USE_ADDRESS
+#define HOST_HOOKS_GT_PCH_USE_ADDRESS sol_gt_pch_use_address
+
+/* Map SIZE bytes of FD+OFFSET at BASE.  Return 1 if we succeeded at 
+   mapping the data at BASE, -1 if we couldn't.  */
+
+static int
+sol_gt_pch_use_address (void *base, size_t size, int fd, size_t offset)
+{
+  void *addr;
+
+  /* We're called with size == 0 if we're not planning to load a PCH
+     file at all.  This allows the hook to free any static space that
+     we might have allocated at link time.  */
+  if (size == 0)
+    return -1;
+
+  addr = mmap (base, size, PROT_READ | PROT_WRITE, MAP_PRIVATE,
+	       fd, offset);
+
+  /* Solaris isn't good about honoring the mmap START parameter
+     without MAP_FIXED set.  Before we give up, search the desired
+     address space with mincore to see if the space is really free.
+  if (addr != base)
+    {
+      size_t page_size = getpagesize();
+      char one_byte;
+      size_t i;
+
+      if (addr != (void *) MAP_FAILED)
+	munmap (addr, size);
+
+      errno = 0;
+      for (i = 0; i < size; i += page_size)
+	if (mincore ((char *)base + i, page_size, (void *)&one_byte) == -1
+	    && errno == ENOMEM)
+	  continue; /* The page is not mapped.  */
+	else
+	  break;
+
+      if (i >= size)
+	addr = mmap (base, size, 
+		     PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED,
+		     fd, offset);
+    }
+
+  return addr == base ? 1 : -1;
+}
+
+
+const struct host_hooks host_hooks = HOST_HOOKS_INITIALIZER;