mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-02-15 13:39:26 +08:00
a020c74a8d
(fhandler_dev_zero::munmap): Ditto. (fhandler_dev_zero::msync): Ditto. (fhandler_dev_zero::fixup_mmap_after_fork): Ditto. * mmap.cc: Implement anonymous mapping using fhandler_dev_zero class. Implement private anonymous maps using VirtualAlloc/VirtualFree. Fix or add some more comments. (fh_paging_file): Change to type fhandler_dev_zero. (priv): New static inline function to avoid having lots of flag bit tests in the code. Use throughout were appropriate. (fixed): Ditto. (anonymous): Ditto. (noreserve): Ditto. (autogrow): Ditto. (gen_protect): Never generate PAGE_WRITECOPY protection for private anonymous maps. (gen_access): Drop FILE_MAP_EXECUTE handling since it's not supported correctly on 9x. (VirtualProt9x): Move comment from mmap64 here. (mmap_record::mmap_record): Gegerate correct device entry for anonymous maps, though unused right now. (mmap_record::priv): Call global priv function. (mmap_record::fixed): Call global fixed function. (mmap_record::anonymous): Call global anonymous function. (mmap_record::noreserve): Call global noreserve function. (mmap_record::autogrow): Call global autogrow function. (list::anonymous): New method. Use throughout were appropriate. (mmap_record::compatible_flags): Drop now useless ifdef. (mmap_record::alloc_page_map): Accomodate private anonymous maps. (mmap_record::map_pages): Accomodate MAP_NORESERVE mappings. (mmap_record::unmap_pages): Accomodate private anonymous maps. (mmap64): Simplify argument check. Don't remove the MAP_PRIVATE flag for anonymous mappings on 9x anymore since that's now handled gracefully. (mprotect): Accomodate MAP_NORESERVE mappings. Fix case when non-mmap areas are just MEM_RESERVEd. (fhandler_dev_zero::mmap): Implement anonymous mapping here. (fhandler_dev_zero::munmap): Ditto. (fhandler_dev_zero::msyn): Ditto. (fhandler_dev_zero::fixup_mmap_after_fork): Ditto. (fixup_mmaps_after_fork): Accomodate private anonymous maps. Enhance debug output in case VirtualProtect fails. * include/sys/mman.h: Really define MAP_NORESERVE now.
README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. If you are receiving this as part of a GDB release, see the file gdb/README. If with a binutils release, see binutils/README; if with a libg++ release, see libg++/README, etc. That'll give you info about this package -- supported targets, how to use it, how to report bugs, etc. It is now possible to automatically configure and build a variety of tools with one command. To build all of the tools contained herein, run the ``configure'' script here, e.g.: ./configure make To install them (by default in /usr/local/bin, /usr/local/lib, etc), then do: make install (If the configure script can't determine your type of computer, give it the name as an argument, for instance ``./configure sun4''. You can use the script ``config.sub'' to test whether a name is recognized; if it is, config.sub translates it to a triplet specifying CPU, vendor, and OS.) If you have more than one compiler on your system, it is often best to explicitly set CC in the environment before running configure, and to also set CC when running make. For example (assuming sh/bash/ksh): CC=gcc ./configure make A similar example using csh: setenv CC gcc ./configure make Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems.