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author | Andrew Hsieh <andrewhsieh@google.com> | 2012-11-08 09:43:39 -0800 |
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committer | Andrew Hsieh <andrewhsieh@google.com> | 2012-11-08 09:43:39 -0800 |
commit | 3c56f697e112c79fb5457538fdc373e348beca24 (patch) | |
tree | 91987aa2182421ebead7f3bc3e14ae0effd4ba88 /gcc-4.2.1-5666.3/gcc/config/host-darwin.c | |
parent | 8add91f46171be1526e9b37fffcdb7683ad27d77 (diff) | |
download | toolchain_gcc-3c56f697e112c79fb5457538fdc373e348beca24.tar.gz toolchain_gcc-3c56f697e112c79fb5457538fdc373e348beca24.tar.bz2 toolchain_gcc-3c56f697e112c79fb5457538fdc373e348beca24.zip |
Initial checkin of unmodified gcc-5666.3.tar.gz
This is the source to build gcc-4.2 for MacOSX
gcc version 4.2.1 (Apple Inc. build 5666) (dot 3)
http://opensource.apple.com/tarballs/gcc/gcc-5666.3.tar.gz
Change-Id: I69540223f018e9d07f861fca04bd3833fc138f8b
Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/config/host-darwin.c')
-rw-r--r-- | gcc-4.2.1-5666.3/gcc/config/host-darwin.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/config/host-darwin.c b/gcc-4.2.1-5666.3/gcc/config/host-darwin.c new file mode 100644 index 000000000..24f39cd1d --- /dev/null +++ b/gcc-4.2.1-5666.3/gcc/config/host-darwin.c @@ -0,0 +1,82 @@ +/* Darwin host-specific hook definitions. + Copyright (C) 2003, 2004, 2005 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, 51 Franklin Street, Fifth Floor, Boston, + MA 02110-1301, USA. */ + +#include "config.h" +#include "system.h" +#include "coretypes.h" +#include <sys/mman.h> +#include "toplev.h" +#include "config/host-darwin.h" + +/* Yes, this is really supposed to work. */ +/* APPLE LOCAL begin ARM native compiler support */ +/* Not all Darwins are created equal. */ +static char pch_address_space[DARWIN_PCH_ADDR_SPACE_SIZE] __attribute__((aligned (4096))); +/* APPLE LOCAL end ARM native compiler support */ + +/* Return the address of the PCH address space, if the PCH will fit in it. */ + +void * +darwin_gt_pch_get_address (size_t sz, int fd ATTRIBUTE_UNUSED) +{ + if (sz <= sizeof (pch_address_space)) + return pch_address_space; + else + return NULL; +} + +/* Check ADDR and SZ for validity, and deallocate (using munmap) that part of + pch_address_space beyond SZ. */ + +int +darwin_gt_pch_use_address (void *addr, size_t sz, int fd, size_t off) +{ + const size_t pagesize = getpagesize(); + void *mmap_result; + int ret; + + gcc_assert ((size_t)pch_address_space % pagesize == 0 + && sizeof (pch_address_space) % pagesize == 0); + + ret = (addr == pch_address_space && sz <= sizeof (pch_address_space)); + if (! ret) + sz = 0; + + /* Round the size to a whole page size. Normally this is a no-op. */ + sz = (sz + pagesize - 1) / pagesize * pagesize; + + if (munmap (pch_address_space + sz, sizeof (pch_address_space) - sz) != 0) + fatal_error ("couldn't unmap pch_address_space: %m"); + + if (ret) + { + mmap_result = mmap (addr, sz, + PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, + fd, off); + + /* The file might not be mmap-able. */ + ret = mmap_result != (void *) MAP_FAILED; + + /* Sanity check for broken MAP_FIXED. */ + gcc_assert (!ret || mmap_result == addr); + } + + return ret; +} |