Remove deprecated WITH_HOST_DALVIK.

Bug: 13751317
Fix the Mac build:
 - disable x86 selector removal that causes OS/X 10.9 kernel panics,
 - madvise don't need does zero memory on the Mac, factor into MemMap
   routine,
 - switch to the elf.h in elfutils to avoid Linux kernel dependencies,
 - we can't rely on exclusive_owner_ being available from other pthread
   libraries so maintain our own when futexes aren't available (we
   can't rely on the OS/X 10.8 hack any more),
 - fix symbol naming in assembly code,
 - work around C library differences,
 - disable backtrace in DumpNativeStack to avoid a broken libbacktrace
   dependency,
 - disable main thread signal handling logic,
 - align the stack in stub_test,
 - use $(HOST_SHLIB_SUFFIX) rather than .so in host make file variables.

Not all host tests are passing on the Mac with this change. dex2oat
works as does running HelloWorld.
Change-Id: I5a232aedfb2028524d49daa6397a8e60f3ee40d3

1 files changed, 6 insertions, 0 deletions

diff --git a/runtime/gc/allocator/rosalloc.cc b/runtime/gc/allocator/rosalloc.cc
index 10b88b3506..55262f2359 100644
--- a/runtime/gc/allocator/rosalloc.cc
+++ b/runtime/gc/allocator/rosalloc.cc
@@ -1507,6 +1507,9 @@ bool RosAlloc::Trim() {
     if (madvise_size > 0) {
       DCHECK_ALIGNED(madvise_begin, kPageSize);
       DCHECK_EQ(RoundUp(madvise_size, kPageSize), madvise_size);
+      if (!kMadviseZeroes) {
+        memset(madvise_begin, 0, madvise_size);
+      }
       CHECK_EQ(madvise(madvise_begin, madvise_size, MADV_DONTNEED), 0);
     }
     if (madvise_begin - zero_begin) {
@@ -2117,6 +2120,9 @@ size_t RosAlloc::ReleasePages() {
           start = reinterpret_cast<byte*>(fpr) + kPageSize;
         }
         byte* end = reinterpret_cast<byte*>(fpr) + fpr_size;
+        if (!kMadviseZeroes) {
+          memset(start, 0, end - start);
+        }
         CHECK_EQ(madvise(start, end - start, MADV_DONTNEED), 0);
         reclaimed_bytes += fpr_size;
         size_t num_pages = fpr_size / kPageSize;