[mirror_ubuntu-artful-kernel.git] / arch / mips / include / asm / fpregdef.h

/*
 * Definitions for the FPU register names
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1995, 1999 Ralf Baechle
 * Copyright (C) 1985 MIPS Computer Systems, Inc.
 * Copyright (C) 1990 - 1992, 1999 Silicon Graphics, Inc.
 */
#ifndef _ASM_FPREGDEF_H
#define _ASM_FPREGDEF_H

#include <asm/sgidefs.h>

/*
 * starting with binutils 2.24.51.20140729, MIPS binutils warn about mixing
 * hardfloat and softfloat object files.  The kernel build uses soft-float by
 * default, so we also need to pass -msoft-float along to GAS if it supports it.
 * But this in turn causes assembler errors in files which access hardfloat
 * registers.  We detect if GAS supports "-msoft-float" in the Makefile and
 * explicitly put ".set hardfloat" where floating point registers are touched.
 */
#ifdef GAS_HAS_SET_HARDFLOAT
#define SET_HARDFLOAT .set hardfloat
#else
#define SET_HARDFLOAT
#endif

#if _MIPS_SIM == _MIPS_SIM_ABI32

/*
 * These definitions only cover the R3000-ish 16/32 register model.
 * But we're trying to be R3000 friendly anyway ...
 */
#define fv0	$f0	 /* return value */
#define fv0f	$f1
#define fv1	$f2
#define fv1f	$f3
#define fa0	$f12	 /* argument registers */
#define fa0f	$f13
#define fa1	$f14
#define fa1f	$f15
#define ft0	$f4	 /* caller saved */
#define ft0f	$f5
#define ft1	$f6
#define ft1f	$f7
#define ft2	$f8
#define ft2f	$f9
#define ft3	$f10
#define ft3f	$f11
#define ft4	$f16
#define ft4f	$f17
#define ft5	$f18
#define ft5f	$f19
#define fs0	$f20	 /* callee saved */
#define fs0f	$f21
#define fs1	$f22
#define fs1f	$f23
#define fs2	$f24
#define fs2f	$f25
#define fs3	$f26
#define fs3f	$f27
#define fs4	$f28
#define fs4f	$f29
#define fs5	$f30
#define fs5f	$f31

#define fcr31	$31	 /* FPU status register */

#endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */

#if _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32

#define fv0	$f0	/* return value */
#define fv1	$f2
#define fa0	$f12	/* argument registers */
#define fa1	$f13
#define fa2	$f14
#define fa3	$f15
#define fa4	$f16
#define fa5	$f17
#define fa6	$f18
#define fa7	$f19
#define ft0	$f4	/* caller saved */
#define ft1	$f5
#define ft2	$f6
#define ft3	$f7
#define ft4	$f8
#define ft5	$f9
#define ft6	$f10
#define ft7	$f11
#define ft8	$f20
#define ft9	$f21
#define ft10	$f22
#define ft11	$f23
#define ft12	$f1
#define ft13	$f3
#define fs0	$f24	/* callee saved */
#define fs1	$f25
#define fs2	$f26
#define fs3	$f27
#define fs4	$f28
#define fs5	$f29
#define fs6	$f30
#define fs7	$f31

#define fcr31	$31

#endif /* _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32 */

#endif /* _ASM_FPREGDEF_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Definitions for the FPU register names
	3	*
	4	* This file is subject to the terms and conditions of the GNU General Public
	5	* License. See the file "COPYING" in the main directory of this archive
	6	* for more details.
	7	*
	8	* Copyright (C) 1995, 1999 Ralf Baechle
	9	* Copyright (C) 1985 MIPS Computer Systems, Inc.
	10	* Copyright (C) 1990 - 1992, 1999 Silicon Graphics, Inc.
	11	*/
	12	#ifndef _ASM_FPREGDEF_H
	13	#define _ASM_FPREGDEF_H
	14
	15	#include <asm/sgidefs.h>
42a3b4f2	16
842dfc11 ML	17	/*
	18	* starting with binutils 2.24.51.20140729, MIPS binutils warn about mixing
	19	* hardfloat and softfloat object files. The kernel build uses soft-float by
	20	* default, so we also need to pass -msoft-float along to GAS if it supports it.
	21	* But this in turn causes assembler errors in files which access hardfloat
	22	* registers. We detect if GAS supports "-msoft-float" in the Makefile and
	23	* explicitly put ".set hardfloat" where floating point registers are touched.
	24	*/
	25	#ifdef GAS_HAS_SET_HARDFLOAT
	26	#define SET_HARDFLOAT .set hardfloat
	27	#else
	28	#define SET_HARDFLOAT
	29	#endif
	30
1da177e4 LT	31	#if _MIPS_SIM == _MIPS_SIM_ABI32
	32
	33	/*
	34	* These definitions only cover the R3000-ish 16/32 register model.
	35	* But we're trying to be R3000 friendly anyway ...
	36	*/
70342287	37	#define fv0 $f0 /* return value */
1da177e4 LT	38	#define fv0f $f1
	39	#define fv1 $f2
	40	#define fv1f $f3
70342287	41	#define fa0 $f12 /* argument registers */
1da177e4 LT	42	#define fa0f $f13
	43	#define fa1 $f14
	44	#define fa1f $f15
70342287	45	#define ft0 $f4 /* caller saved */
1da177e4 LT	46	#define ft0f $f5
	47	#define ft1 $f6
	48	#define ft1f $f7
	49	#define ft2 $f8
	50	#define ft2f $f9
	51	#define ft3 $f10
	52	#define ft3f $f11
	53	#define ft4 $f16
	54	#define ft4f $f17
	55	#define ft5 $f18
	56	#define ft5f $f19
70342287	57	#define fs0 $f20 /* callee saved */
1da177e4 LT	58	#define fs0f $f21
	59	#define fs1 $f22
	60	#define fs1f $f23
	61	#define fs2 $f24
	62	#define fs2f $f25
	63	#define fs3 $f26
	64	#define fs3f $f27
	65	#define fs4 $f28
	66	#define fs4f $f29
	67	#define fs5 $f30
	68	#define fs5f $f31
	69
70342287	70	#define fcr31 $31 /* FPU status register */
1da177e4 LT	71
1da177e4 LT	72	#endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
42a3b4f2	73
1da177e4 LT	74	#if _MIPS_SIM == _MIPS_SIM_ABI64 \|\| _MIPS_SIM == _MIPS_SIM_NABI32
	75
	76	#define fv0 $f0 /* return value */
	77	#define fv1 $f2
	78	#define fa0 $f12 /* argument registers */
	79	#define fa1 $f13
	80	#define fa2 $f14
	81	#define fa3 $f15
	82	#define fa4 $f16
	83	#define fa5 $f17
	84	#define fa6 $f18
	85	#define fa7 $f19
	86	#define ft0 $f4 /* caller saved */
	87	#define ft1 $f5
	88	#define ft2 $f6
	89	#define ft3 $f7
	90	#define ft4 $f8
	91	#define ft5 $f9
	92	#define ft6 $f10
	93	#define ft7 $f11
	94	#define ft8 $f20
	95	#define ft9 $f21
	96	#define ft10 $f22
	97	#define ft11 $f23
	98	#define ft12 $f1
	99	#define ft13 $f3
	100	#define fs0 $f24 /* callee saved */
	101	#define fs1 $f25
	102	#define fs2 $f26
	103	#define fs3 $f27
	104	#define fs4 $f28
	105	#define fs5 $f29
	106	#define fs6 $f30
	107	#define fs7 $f31
	108
	109	#define fcr31 $31
	110
	111	#endif /* _MIPS_SIM == _MIPS_SIM_ABI64 \|\| _MIPS_SIM == _MIPS_SIM_NABI32 */
	112
	113	#endif /* _ASM_FPREGDEF_H */