Tedu compiler-rt 8.0.1.

1 files changed, 0 insertions, 72 deletions

diff --git a/lib/libcompiler_rt/enable_execute_stack.c b/lib/libcompiler_rt/enable_execute_stack.c
deleted file mode 100644
index 327d460b425..00000000000
--- a/lib/libcompiler_rt/enable_execute_stack.c
+++ /dev/null
@@ -1,72 +0,0 @@
-/* ===-- enable_execute_stack.c - Implement __enable_execute_stack ---------===
- *
- *                     The LLVM Compiler Infrastructure
- *
- * This file is dual licensed under the MIT and the University of Illinois Open
- * Source Licenses. See LICENSE.TXT for details.
- *
- * ===----------------------------------------------------------------------===
- */
-
-#include "int_lib.h"
-
-#ifndef _WIN32
-#include <sys/mman.h>
-#endif
-
-/* #include "config.h"
- * FIXME: CMake - include when cmake system is ready.
- * Remove #define HAVE_SYSCONF 1 line.
- */
-#define HAVE_SYSCONF 1
-
-#ifdef _WIN32
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#else
-#ifndef __APPLE__
-#include <unistd.h>
-#endif /* __APPLE__ */
-#endif /* _WIN32 */
-
-#if __LP64__
-	#define TRAMPOLINE_SIZE 48
-#else
-	#define TRAMPOLINE_SIZE 40
-#endif
-
-/*
- * The compiler generates calls to __enable_execute_stack() when creating 
- * trampoline functions on the stack for use with nested functions.
- * It is expected to mark the page(s) containing the address 
- * and the next 48 bytes as executable.  Since the stack is normally rw-
- * that means changing the protection on those page(s) to rwx. 
- */
-
-COMPILER_RT_ABI void
-__enable_execute_stack(void* addr)
-{
-
-#if _WIN32
-	MEMORY_BASIC_INFORMATION mbi;
-	if (!VirtualQuery (addr, &mbi, sizeof(mbi)))
-		return; /* We should probably assert here because there is no return value */
-	VirtualProtect (mbi.BaseAddress, mbi.RegionSize, PAGE_EXECUTE_READWRITE, &mbi.Protect);
-#else
-#if __APPLE__
-	/* On Darwin, pagesize is always 4096 bytes */
-	const uintptr_t pageSize = 4096;
-#elif !defined(HAVE_SYSCONF)
-#error "HAVE_SYSCONF not defined! See enable_execute_stack.c"
-#else
-        const uintptr_t pageSize = sysconf(_SC_PAGESIZE);
-#endif /* __APPLE__ */
-
-	const uintptr_t pageAlignMask = ~(pageSize-1);
-	uintptr_t p = (uintptr_t)addr;
-	unsigned char* startPage = (unsigned char*)(p & pageAlignMask);
-	unsigned char* endPage = (unsigned char*)((p+TRAMPOLINE_SIZE+pageSize) & pageAlignMask);
-	size_t length = endPage - startPage;
-	(void) mprotect((void *)startPage, length, PROT_READ | PROT_WRITE | PROT_EXEC);
-#endif
-}