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Diffstat (limited to 'gcc/config/alpha/host-osf.c')
| -rw-r--r-- | gcc/config/alpha/host-osf.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/gcc/config/alpha/host-osf.c b/gcc/config/alpha/host-osf.c deleted file mode 100644 index 0a554b3ec2c..00000000000 --- a/gcc/config/alpha/host-osf.c +++ /dev/null @@ -1,147 +0,0 @@ -/* Tru64 UNIX host-specific hook definitions. - Copyright (C) 2011 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 <sys/mman.h> -/* Inhibit inclusion of <sys/mount.h>, unnecessary and errors out due to - use of poisoned bcmp, bcopy. */ -#define _SYS_MOUNT_H_ -#include <sys/procfs.h> -#include "hosthooks.h" -#include "hosthooks-def.h" - - -#undef HOST_HOOKS_GT_PCH_GET_ADDRESS -#define HOST_HOOKS_GT_PCH_GET_ADDRESS osf_gt_pch_get_address -#undef HOST_HOOKS_GT_PCH_USE_ADDRESS -#define HOST_HOOKS_GT_PCH_USE_ADDRESS osf_gt_pch_use_address - -/* The mmap ADDR parameter may be ignored without MAP_FIXED set. Before we - give up, check existing mappings with ioctl(PIOCMAP) 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) - { - /* PID_MAX is SHRT_MAX on Tru64 UNIX V4.0, but INT_MAX on V5.1. - Allow for both. "/proc/" + INT_MAX + '\0'. */ - char pname[6+10+1]; - int procfd, nmap; - prmap_t *pmap; - int i, overlap = 0; - - if (base != (void *) MAP_FAILED) - munmap ((caddr_t) base, len); - - /* Check if there's any mapping overlapping [addr, addr+len). */ - - snprintf (pname, sizeof (pname), "/proc/%d", getpid ()); - procfd = open (pname, O_RDONLY); - if (procfd == -1) - return ((void *) MAP_FAILED); - if (ioctl (procfd, PIOCNMAP, &nmap) == -1) - return ((void *) MAP_FAILED); - pmap = (prmap_t *) xmalloc (sizeof (*pmap) * (nmap+1)); - if (ioctl (procfd, PIOCMAP, pmap) == -1) - return ((void *) MAP_FAILED); - - /* It seems like pmap[] is sorted by address, but can we rely on - that? */ - for (i = 0; i < nmap; i++) - { - uintptr_t map_start = (uintptr_t) pmap[i].pr_vaddr; - uintptr_t map_end = map_start + pmap[i].pr_size; - - if ((uintptr_t) addr < map_end - && (uintptr_t) addr+len > map_start) - { - overlap = 1; - break; - } - } - free (pmap); - close (procfd); - - if (!overlap) - base = mmap ((caddr_t) addr, len, prot, flags | MAP_FIXED, fd, off); - else - base = mmap ((caddr_t) addr, len, prot, flags, fd, off); - } - - return base; -} - -/* For various ports, try to guess a fixed spot in the vm space that's - probably free. Take the middle between start of text segment and - dynamic loader space. See <sys/machine/addrconf.h> and Tru64 UNIX - Assembly Language Programmer's Guide, p.6-18, Figure 6-3: Default Layout - of Memory (User Program View). */ -#define TRY_EMPTY_VM_SPACE 0x20050000000 - -/* 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 * -osf_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 -osf_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; |