9d2983b406
Also pull in missing config.hosts changes from gcc-6.5 in netbsd-current Bump PKGREVISION
93 lines
3 KiB
C
93 lines
3 KiB
C
$NetBSD: patch-gcc_config_host-netbsd.c,v 1.1 2018/11/23 19:28:30 abs Exp $
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Add host hooks for NetBSD - needed for working precompiled headers.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58397
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--- /dev/null 2013-09-11 20:06:51.000000000 +0200
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+++ gcc/config/host-netbsd.c 2013-09-11 20:29:31.000000000 +0200
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@@ -0,0 +1,85 @@
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+/* NetBSD host-specific hook definitions.
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+ Copyright (C) 2004-2013 Free Software Foundation, Inc.
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+
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+ This file is part of GCC.
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+
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+ GCC is free software; you can redistribute it and/or modify it
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+ under the terms of the GNU General Public License as published
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+ by the Free Software Foundation; either version 3, or (at your
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+ option) any later version.
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+
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+ GCC is distributed in the hope that it will be useful, but WITHOUT
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+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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+ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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+ License for more details.
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+
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+ You should have received a copy of the GNU General Public License
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+ along with GCC; see the file COPYING3. If not see
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+ <http://www.gnu.org/licenses/>. */
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+
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+#include "config.h"
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+#include "system.h"
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+#include "coretypes.h"
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+#include "hosthooks.h"
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+#include "hosthooks-def.h"
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+
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+
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+#undef HOST_HOOKS_GT_PCH_GET_ADDRESS
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+#define HOST_HOOKS_GT_PCH_GET_ADDRESS netbsd_gt_pch_get_address
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+#undef HOST_HOOKS_GT_PCH_USE_ADDRESS
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+#define HOST_HOOKS_GT_PCH_USE_ADDRESS netbsd_gt_pch_use_address
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+
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+/* For various ports, try to guess a fixed spot in the vm space
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+ that's probably free. */
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+#if defined(__sparc64__)
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+# define TRY_EMPTY_VM_SPACE 0x40000000000
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+#elif defined(_LP64)
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+# define TRY_EMPTY_VM_SPACE 0x400000000000
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+#elif defined(__mips__) || defined(__vax__) || defined (__arm__)
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+# define TRY_EMPTY_VM_SPACE 0x60000000
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+#else
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+# define TRY_EMPTY_VM_SPACE 0xb0000000
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+#endif
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+
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+/* Determine a location where we might be able to reliably allocate
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+ SIZE bytes. FD is the PCH file, though we should return with the
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+ file unmapped. */
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+
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+static void *
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+netbsd_gt_pch_get_address (size_t size, int fd)
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+{
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+ void *addr;
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+
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+ addr = mmap ((void *) TRY_EMPTY_VM_SPACE, size, PROT_READ | PROT_WRITE,
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+ MAP_PRIVATE | MAP_FIXED, fd, 0);
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+
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+ /* If we failed the map, that means there's *no* free space. */
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+ if (addr == (void *) MAP_FAILED)
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+ return NULL;
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+ /* Unmap the area before returning. */
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+ munmap (addr, size);
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+
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+ return addr;
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+}
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+
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+/* Map SIZE bytes of FD+OFFSET at BASE. Return 1 if we succeeded at
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+ mapping the data at BASE, -1 if we couldn't. */
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+
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+static int
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+netbsd_gt_pch_use_address (void *base, size_t size, int fd, size_t offset)
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+{
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+ void *addr;
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+
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+ /* We're called with size == 0 if we're not planning to load a PCH
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+ file at all. This allows the hook to free any static space that
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+ we might have allocated at link time. */
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+ if (size == 0)
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+ return -1;
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+
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+ addr = mmap (base, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, fd, offset);
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+
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+ return addr == base ? 1 : -1;
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+}
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+
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+
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+const struct host_hooks host_hooks = HOST_HOOKS_INITIALIZER;
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