Fix signedness warning in mprotect call, Clean up and improve endianness.h header.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@78451 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/enable_execute_stack.c b/lib/enable_execute_stack.c
index c2ebc30..aed1b88 100644
--- a/lib/enable_execute_stack.c
+++ b/lib/enable_execute_stack.c
@@ -36,7 +36,8 @@
uintptr_t p = (uintptr_t)addr;
unsigned char* startPage = (unsigned char*)(p & pageAlignMask);
unsigned char* endPage = (unsigned char*)((p+48+pageSize) & pageAlignMask);
- mprotect(startPage, endPage-startPage, PROT_READ | PROT_WRITE | PROT_EXEC);
+ size_t length = endPage - startPage;
+ (void) mprotect((void *)startPage, length, PROT_READ | PROT_WRITE | PROT_EXEC);
}