RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2025-01-20 18:56:04 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Retire NEED_DEV_ZERO_FOR_MMAP. It should be needed only on outdated

Browse Source 
systems. It wasn't even hooked up in cmake, so problems on such systems
would be visible with 3.9 release already.

llvm-svn: 282924
This commit is contained in:
Joerg Sonnenberger 2016-09-30 20:16:01 +00:00
parent 9d06fa6416
commit c42de87cd4
2 changed files with 0 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/llvm/Config/config.h.cmake
View File

@ -450,10 +450,6 @@
/* Define to the extension used for shared libraries, say, ".so". */
#cmakedefine LTDL_SHLIB_EXT "${LTDL_SHLIB_EXT}"
/* Define if /dev/zero should be used when mapping RWX memory, or undefine if
its not necessary */
#undef NEED_DEV_ZERO_FOR_MMAP
/* Define to the address where bug reports for this package should be sent. */
#cmakedefine PACKAGE_BUGREPORT "${PACKAGE_BUGREPORT}"

16
lib/Support/Unix/Memory.inc
View File

@ -91,14 +91,6 @@ Memory::allocateMappedMemory(size_t NumBytes,
const size_t NumPages = (NumBytes+PageSize-1)/PageSize;
int fd = -1;
#ifdef NEED_DEV_ZERO_FOR_MMAP
static int zero_fd = open("/dev/zero", O_RDWR);
if (zero_fd == -1) {
EC = std::error_code(errno, std::generic_category());
return MemoryBlock();
}
fd = zero_fd;
#endif
int MMFlags = MAP_PRIVATE |
#ifdef HAVE_MMAP_ANONYMOUS
@ -185,14 +177,6 @@ Memory::AllocateRWX(size_t NumBytes, const MemoryBlock* NearBlock,
size_t NumPages = (NumBytes+PageSize-1)/PageSize;
int fd = -1;
#ifdef NEED_DEV_ZERO_FOR_MMAP
static int zero_fd = open("/dev/zero", O_RDWR);
if (zero_fd == -1) {
MakeErrMsg(ErrMsg, "Can't open /dev/zero device");
return MemoryBlock();
}
fd = zero_fd;
#endif
int flags = MAP_PRIVATE |
#ifdef HAVE_MMAP_ANONYMOUS