diff options
author | Steve Reinhardt <steve.reinhardt@amd.com> | 2011-10-22 22:30:07 -0700 |
---|---|---|
committer | Steve Reinhardt <steve.reinhardt@amd.com> | 2011-10-22 22:30:07 -0700 |
commit | 4d5f2c28a88f83d390e80407f55a8a02ead33878 (patch) | |
tree | 59f8aca2bd6995a396aade765156272998fc8bbf /src/mem/page_table.hh | |
parent | c6dd122feef8cfb4785b8d45f40907bd6c73e04a (diff) | |
download | gem5-4d5f2c28a88f83d390e80407f55a8a02ead33878.tar.xz |
syscall_emul: implement MAP_FIXED option to mmap()
Diffstat (limited to 'src/mem/page_table.hh')
-rw-r--r-- | src/mem/page_table.hh | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/mem/page_table.hh b/src/mem/page_table.hh index 61da5f322..d60f4a433 100644 --- a/src/mem/page_table.hh +++ b/src/mem/page_table.hh @@ -79,11 +79,19 @@ class PageTable Addr pageAlign(Addr a) { return (a & ~offsetMask); } Addr pageOffset(Addr a) { return (a & offsetMask); } - void allocate(Addr vaddr, int64_t size); + void allocate(Addr vaddr, int64_t size, bool clobber = false); void remap(Addr vaddr, int64_t size, Addr new_vaddr); void deallocate(Addr vaddr, int64_t size); /** + * Check if any pages in a region are already allocated + * @param vaddr The starting virtual address of the region. + * @param size The length of the region. + * @return True if no pages in the region are mapped. + */ + bool isUnmapped(Addr vaddr, int64_t size); + + /** * Lookup function * @param vaddr The virtual address. * @return entry The page table entry corresponding to vaddr. |