teak-llvm/compiler-rt/lib/builtins/arm/sync_fetch_and_and_8.S
Saleem Abdulrasool 590e85b575 builtins: tag with noexecstack
These routines do not require executable stacks.  However, by default ELFish
linkers may assume an executable stack on GNUish environments (and some non-GNU
ones too!).  The GNU extension to add a note to indicate a non-executable stack
is honoured by these environments to mark the stack as non-executable (the
compiler normally emits this directive on appropriate targets whenever
possible).  This allows normal builds from getting executable stacks due to
linking to the compiler rt builtins.

llvm-svn: 273500
2016-06-22 22:09:42 +00:00

27 lines
755 B
ArmAsm

/*===-- sync_fetch_and_and_8.S - ------------------------------------------===//
*
* 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.
*
*===----------------------------------------------------------------------===//
*
* This file implements the __sync_fetch_and_and_8 function for the ARM
* architecture.
*
*===----------------------------------------------------------------------===*/
#include "sync-ops.h"
#if __ARM_ARCH_PROFILE != 'M'
#define and_8(rD_LO, rD_HI, rN_LO, rN_HI, rM_LO, rM_HI) \
and rD_LO, rN_LO, rM_LO ; \
and rD_HI, rN_HI, rM_HI
SYNC_OP_8(and_8)
#endif
NO_EXEC_STACK_DIRECTIVE