Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 125 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/config/host-solaris.c b/gcc-4.9/gcc/config/host-solaris.c
new file mode 100644
index 000000000..b6afef4f7
--- /dev/null
+++ b/gcc-4.9/gcc/config/host-solaris.c
@@ -0,0 +1,125 @@
+/* Solaris host-specific hook definitions.
+   Copyright (C) 2004-2014 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/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "hosthooks.h"
+#include "hosthooks-def.h"
+
+
+#undef HOST_HOOKS_GT_PCH_GET_ADDRESS
+#define HOST_HOOKS_GT_PCH_GET_ADDRESS sol_gt_pch_get_address
+#undef HOST_HOOKS_GT_PCH_USE_ADDRESS
+#define HOST_HOOKS_GT_PCH_USE_ADDRESS sol_gt_pch_use_address
+
+/* Before Solaris 11, the mmap ADDR parameter is mostly ignored without
+   MAP_FIXED set.  Before we give up, search the desired address space with
+   mincore to see if the space is really free.  */
+
+static void *
+mmap_fixed (void *addr, size_t len, int prot, int flags, int fd, off_t off)
+{
+  void *base;
+
+  base = mmap ((caddr_t) addr, len, prot, flags, fd, off);
+  
+  if (base != addr)
+    {
+      size_t page_size = getpagesize();
+      char one_byte;
+      size_t i;
+
+      if (base != (void *) MAP_FAILED)
+	munmap ((caddr_t) base, len);
+
+      errno = 0;
+      for (i = 0; i < len; i += page_size)
+	if (mincore ((char *)addr + i, page_size, (char *) &one_byte) == -1
+	    && errno == ENOMEM)
+	  continue; /* The page is not mapped.  */
+	else
+	  break;
+
+      if (i >= len)
+	base = mmap ((caddr_t) addr, len, prot, flags | MAP_FIXED, fd, off);
+    }
+
+  return base;
+}
+
+/* For various ports, try to guess a fixed spot in the vm space
+   that's probably free.  Based on McDougall, Mauro, Solaris Internals, 2nd
+   ed., p.460-461, fig. 9-3, 9-4, 9-5.  */
+#if defined(__sparcv9__)
+/* This low to avoid VA hole on UltraSPARC I/II.  */
+# define TRY_EMPTY_VM_SPACE	0x70000000000
+#elif defined(__sparc__)
+# define TRY_EMPTY_VM_SPACE	0x80000000
+#elif defined(__x86_64__)
+# define TRY_EMPTY_VM_SPACE	0x80000000000
+#elif defined(__i386__)
+# define TRY_EMPTY_VM_SPACE	0xB0000000
+#else
+# define TRY_EMPTY_VM_SPACE	0
+#endif
+
+/* Determine a location where we might be able to reliably allocate
+   SIZE bytes.  FD is the PCH file, though we should return with the
+   file unmapped.  */
+
+static void *
+sol_gt_pch_get_address (size_t size, int fd)
+{
+  void *addr;
+
+  addr = mmap_fixed ((caddr_t) TRY_EMPTY_VM_SPACE, size,
+		     PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
+
+  /* If we failed the map, that means there's *no* free space.  */
+  if (addr == (void *) MAP_FAILED)
+    return NULL;
+  /* Unmap the area before returning.  */
+  munmap ((caddr_t) addr, size);
+
+  return addr;
+}
+
+/* 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_fixed ((caddr_t) base, size,
+		     PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, offset);
+
+  return addr == base ? 1 : -1;
+}
+
+
+const struct host_hooks host_hooks = HOST_HOOKS_INITIALIZER;