[linux-block.git] / include / linux / compiler-intel.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_COMPILER_TYPES_H
#error "Please don't include <linux/compiler-intel.h> directly, include <linux/compiler.h> instead."
#endif

#ifdef __ECC

/* Some compiler specific definitions are overwritten here
 * for Intel ECC compiler
 */

#include <asm/intrinsics.h>

/* Intel ECC compiler doesn't support gcc specific asm stmts.
 * It uses intrinsics to do the equivalent things.
 */

#define barrier() __memory_barrier()
#define barrier_data(ptr) barrier()

#define RELOC_HIDE(ptr, off)					\
  ({ unsigned long __ptr;					\
     __ptr = (unsigned long) (ptr);				\
    (typeof(ptr)) (__ptr + (off)); })

/* This should act as an optimization barrier on var.
 * Given that this compiler does not have inline assembly, a compiler barrier
 * is the best we can do.
 */
#define OPTIMIZER_HIDE_VAR(var) barrier()

/* Intel ECC compiler doesn't support __builtin_types_compatible_p() */
#define __must_be_array(a) 0

#endif

/* icc has this, but it's called _bswap16 */
#define __HAVE_BUILTIN_BSWAP16__
#define __builtin_bswap16 _bswap16

/* The following are for compatibility with GCC, from compiler-gcc.h,
 * and may be redefined here because they should not be shared with other
 * compilers, like clang.
 */
#define __visible	__attribute__((externally_visible))
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
d1515582	2	#ifndef __LINUX_COMPILER_TYPES_H
94f582f8 RD	3	#error "Please don't include <linux/compiler-intel.h> directly, include <linux/compiler.h> instead."
94f582f8 RD	4	#endif
1da177e4 LT	5
	6	#ifdef __ECC
	7
	8	/* Some compiler specific definitions are overwritten here
	9	* for Intel ECC compiler
	10	*/
	11
	12	#include <asm/intrinsics.h>
	13
	14	/* Intel ECC compiler doesn't support gcc specific asm stmts.
	15	* It uses intrinsics to do the equivalent things.
	16	*/
1da177e4	17
b86a50c3	18	#define barrier() __memory_barrier()
7829fb09 DB	19	#define barrier_data(ptr) barrier()
7829fb09 DB	20
1da177e4 LT	21	#define RELOC_HIDE(ptr, off) \
	22	({ unsigned long __ptr; \
	23	__ptr = (unsigned long) (ptr); \
	24	(typeof(ptr)) (__ptr + (off)); })
	25
fe8c8a12 CEB	26	/* This should act as an optimization barrier on var.
	27	* Given that this compiler does not have inline assembly, a compiler barrier
	28	* is the best we can do.
	29	*/
	30	#define OPTIMIZER_HIDE_VAR(var) barrier()
	31
c5e631cf RR	32	/* Intel ECC compiler doesn't support __builtin_types_compatible_p() */
	33	#define __must_be_array(a) 0
	34
1da177e4	35	#endif
94909914	36
cf66bb93 DW	37	/* icc has this, but it's called _bswap16 */
	38	#define __HAVE_BUILTIN_BSWAP16__
	39	#define __builtin_bswap16 _bswap16
cf66bb93	40
815f0ddb ND	41	/* The following are for compatibility with GCC, from compiler-gcc.h,
	42	* and may be redefined here because they should not be shared with other
	43	* compilers, like clang.
f0907827	44	*/
815f0ddb	45	#define __visible __attribute__((externally_visible))