[compiler-rt] r182303 - [nolibc] Move GetPageSize to the individual platforms.

[Peter Collingbourne]

Author: pcc
Date: Mon May 20 12:05:29 2013
New Revision: 182303

URL: http://llvm.org/viewvc/llvm-project?rev=182303&view=rev
Log:
[nolibc] Move GetPageSize to the individual platforms.

GetPageSize wraps sysconf(_SC_PAGESIZE) on POSIX platforms, but
sysconf resides in libc.  To make this libc-independent on Linux,
move the wrapper to sanitizer_mac.cc and return the Linux-specific
constant EXEC_PAGESIZE in the sanitizer_linux.cc implementation.

Modified:
    compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc
    compiler-rt/trunk/lib/sanitizer_common/sanitizer_mac.cc
    compiler-rt/trunk/lib/sanitizer_common/sanitizer_posix.cc

Modified: compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc?rev=182303&r1=182302&r2=182303&view=diff
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc (original)
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_linux.cc Mon May 20 12:05:29 2013
@@ -613,6 +613,10 @@ bool ThreadLister::GetDirectoryEntries()
   return true;
 }
 
+uptr GetPageSize() {
+  return EXEC_PAGESIZE;
+}
+
 // Match full names of the form /path/to/base_name{-,.}*
 bool LibraryNameIs(const char *full_name, const char *base_name) {
   const char *name = full_name;

Modified: compiler-rt/trunk/lib/sanitizer_common/sanitizer_mac.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_mac.cc?rev=182303&r1=182302&r2=182303&view=diff
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_mac.cc (original)
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_mac.cc Mon May 20 12:05:29 2013
@@ -170,6 +170,10 @@ void PrepareForSandboxing() {
   // Nothing here for now.
 }
 
+uptr GetPageSize() {
+  return sysconf(_SC_PAGESIZE);
+}
+
 // ----------------- sanitizer_procmaps.h
 
 MemoryMappingLayout::MemoryMappingLayout(bool cache_enabled) {

Modified: compiler-rt/trunk/lib/sanitizer_common/sanitizer_posix.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_posix.cc?rev=182303&r1=182302&r2=182303&view=diff
==============================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_posix.cc (original)
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_posix.cc Mon May 20 12:05:29 2013
@@ -35,10 +35,6 @@
 namespace __sanitizer {
 
 // ------------- sanitizer_common.h
-uptr GetPageSize() {
-  return sysconf(_SC_PAGESIZE);
-}
-
 uptr GetMmapGranularity() {
   return GetPageSize();
 }