1 files changed, 197 insertions, 0 deletions
diff --git a/arch/mn10300/kernel/fpu-low.S b/arch/mn10300/kernel/fpu-low.S
new file mode 100644
index 000000000000..96cfd47e68d5
--- /dev/null
+++ b/arch/mn10300/kernel/fpu-low.S
@@ -0,0 +1,197 @@
+/* MN10300 Low level FPU management operations
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <asm/cpu-regs.h>
+###############################################################################
+#
+# void fpu_init_state(void)
+# - initialise the FPU
+#
+###############################################################################
+        .globl  fpu_init_state
+        .type   fpu_init_state,@function
+fpu_init_state:
+        mov     epsw,d0
+        or      EPSW_FE,epsw
+#ifdef CONFIG_MN10300_PROC_MN103E010
+        nop
+        nop
+        nop
+#endif
+        fmov    0,fs0
+        fmov    fs0,fs1
+        fmov    fs0,fs2
+        fmov    fs0,fs3
+        fmov    fs0,fs4
+        fmov    fs0,fs5
+        fmov    fs0,fs6
+        fmov    fs0,fs7
+        fmov    fs0,fs8
+        fmov    fs0,fs9
+        fmov    fs0,fs10
+        fmov    fs0,fs11
+        fmov    fs0,fs12
+        fmov    fs0,fs13
+        fmov    fs0,fs14
+        fmov    fs0,fs15
+        fmov    fs0,fs16
+        fmov    fs0,fs17
+        fmov    fs0,fs18
+        fmov    fs0,fs19
+        fmov    fs0,fs20
+        fmov    fs0,fs21
+        fmov    fs0,fs22
+        fmov    fs0,fs23
+        fmov    fs0,fs24
+        fmov    fs0,fs25
+        fmov    fs0,fs26
+        fmov    fs0,fs27
+        fmov    fs0,fs28
+        fmov    fs0,fs29
+        fmov    fs0,fs30
+        fmov    fs0,fs31
+        fmov    FPCR_INIT,fpcr
+#ifdef CONFIG_MN10300_PROC_MN103E010
+        nop
+        nop
+        nop
+#endif
+        mov     d0,epsw
+        ret     [],0
+        .size   fpu_init_state,.-fpu_init_state
+###############################################################################
+#
+# void fpu_save(struct fpu_state_struct *)
+# - save the fpu state
+# - note that an FPU Operational exception might occur during this process
+#
+###############################################################################
+        .globl  fpu_save
+        .type   fpu_save,@function
+fpu_save:
+        mov     epsw,d1
+        or      EPSW_FE,epsw            /* enable the FPU so we can access it */
+#ifdef CONFIG_MN10300_PROC_MN103E010
+        nop
+        nop
+#endif
+        mov     d0,a0
+        fmov    fs0,(a0+)
+        fmov    fs1,(a0+)
+        fmov    fs2,(a0+)
+        fmov    fs3,(a0+)
+        fmov    fs4,(a0+)
+        fmov    fs5,(a0+)
+        fmov    fs6,(a0+)
+        fmov    fs7,(a0+)
+        fmov    fs8,(a0+)
+        fmov    fs9,(a0+)
+        fmov    fs10,(a0+)
+        fmov    fs11,(a0+)
+        fmov    fs12,(a0+)
+        fmov    fs13,(a0+)
+        fmov    fs14,(a0+)
+        fmov    fs15,(a0+)
+        fmov    fs16,(a0+)
+        fmov    fs17,(a0+)
+        fmov    fs18,(a0+)
+        fmov    fs19,(a0+)
+        fmov    fs20,(a0+)
+        fmov    fs21,(a0+)
+        fmov    fs22,(a0+)
+        fmov    fs23,(a0+)
+        fmov    fs24,(a0+)
+        fmov    fs25,(a0+)
+        fmov    fs26,(a0+)
+        fmov    fs27,(a0+)
+        fmov    fs28,(a0+)
+        fmov    fs29,(a0+)
+        fmov    fs30,(a0+)
+        fmov    fs31,(a0+)
+        fmov    fpcr,d0
+        mov     d0,(a0)
+#ifdef CONFIG_MN10300_PROC_MN103E010
+        nop
+        nop
+#endif
+        mov     d1,epsw
+        ret     [],0
+        .size   fpu_save,.-fpu_save
+###############################################################################
+#
+# void fpu_restore(struct fpu_state_struct *)
+# - restore the fpu state
+# - note that an FPU Operational exception might occur during this process
+#
+###############################################################################
+        .globl  fpu_restore
+        .type   fpu_restore,@function
+fpu_restore:
+        mov     epsw,d1
+        or      EPSW_FE,epsw            /* enable the FPU so we can access it */
+#ifdef CONFIG_MN10300_PROC_MN103E010
+        nop
+        nop
+#endif
+        mov     d0,a0
+        fmov    (a0+),fs0
+        fmov    (a0+),fs1
+        fmov    (a0+),fs2
+        fmov    (a0+),fs3
+        fmov    (a0+),fs4
+        fmov    (a0+),fs5
+        fmov    (a0+),fs6
+        fmov    (a0+),fs7
+        fmov    (a0+),fs8
+        fmov    (a0+),fs9
+        fmov    (a0+),fs10
+        fmov    (a0+),fs11
+        fmov    (a0+),fs12
+        fmov    (a0+),fs13
+        fmov    (a0+),fs14
+        fmov    (a0+),fs15
+        fmov    (a0+),fs16
+        fmov    (a0+),fs17
+        fmov    (a0+),fs18
+        fmov    (a0+),fs19
+        fmov    (a0+),fs20
+        fmov    (a0+),fs21
+        fmov    (a0+),fs22
+        fmov    (a0+),fs23
+        fmov    (a0+),fs24
+        fmov    (a0+),fs25
+        fmov    (a0+),fs26
+        fmov    (a0+),fs27
+        fmov    (a0+),fs28
+        fmov    (a0+),fs29
+        fmov    (a0+),fs30
+        fmov    (a0+),fs31
+        mov     (a0),d0
+        fmov    d0,fpcr
+#ifdef CONFIG_MN10300_PROC_MN103E010
+        nop
+        nop
+        nop
+#endif
+        mov     d1,epsw
+        ret     [],0
+        .size   fpu_restore,.-fpu_restore

diff --git a/arch/mn10300/kernel/fpu-low.S b/arch/mn10300/kernel/fpu-low.S new file mode 100644 index 000000000000..96cfd47e68d5 --- /dev/null +++ b/arch/mn10300/kernel/fpu-low.S
@@ -0,0 +1,197 @@
	1	/* MN10300 Low level FPU management operations
	2	*
	3	* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
	4	* Written by David Howells (dhowells@redhat.com)
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public Licence
	8	* as published by the Free Software Foundation; either version
	9	* 2 of the Licence, or (at your option) any later version.
	10	*/
	11	#include <asm/cpu-regs.h>
	12
	13	###############################################################################
	14	#
	15	# void fpu_init_state(void)
	16	# - initialise the FPU
	17	#
	18	###############################################################################
	19	.globl fpu_init_state
	20	.type fpu_init_state,@function
	21	fpu_init_state:
	22	mov epsw,d0
	23	or EPSW_FE,epsw
	24
	25	#ifdef CONFIG_MN10300_PROC_MN103E010
	26	nop
	27	nop
	28	nop
	29	#endif
	30	fmov 0,fs0
	31	fmov fs0,fs1
	32	fmov fs0,fs2
	33	fmov fs0,fs3
	34	fmov fs0,fs4
	35	fmov fs0,fs5
	36	fmov fs0,fs6
	37	fmov fs0,fs7
	38	fmov fs0,fs8
	39	fmov fs0,fs9
	40	fmov fs0,fs10
	41	fmov fs0,fs11
	42	fmov fs0,fs12
	43	fmov fs0,fs13
	44	fmov fs0,fs14
	45	fmov fs0,fs15
	46	fmov fs0,fs16
	47	fmov fs0,fs17
	48	fmov fs0,fs18
	49	fmov fs0,fs19
	50	fmov fs0,fs20
	51	fmov fs0,fs21
	52	fmov fs0,fs22
	53	fmov fs0,fs23
	54	fmov fs0,fs24
	55	fmov fs0,fs25
	56	fmov fs0,fs26
	57	fmov fs0,fs27
	58	fmov fs0,fs28
	59	fmov fs0,fs29
	60	fmov fs0,fs30
	61	fmov fs0,fs31
	62	fmov FPCR_INIT,fpcr
	63
	64	#ifdef CONFIG_MN10300_PROC_MN103E010
	65	nop
	66	nop
	67	nop
	68	#endif
	69	mov d0,epsw
	70	ret [],0
	71
	72	.size fpu_init_state,.-fpu_init_state
	73
	74	###############################################################################
	75	#
	76	# void fpu_save(struct fpu_state_struct *)
	77	# - save the fpu state
	78	# - note that an FPU Operational exception might occur during this process
	79	#
	80	###############################################################################
	81	.globl fpu_save
	82	.type fpu_save,@function
	83	fpu_save:
	84	mov epsw,d1
	85	or EPSW_FE,epsw /* enable the FPU so we can access it */
	86
	87	#ifdef CONFIG_MN10300_PROC_MN103E010
	88	nop
	89	nop
	90	#endif
	91	mov d0,a0
	92	fmov fs0,(a0+)
	93	fmov fs1,(a0+)
	94	fmov fs2,(a0+)
	95	fmov fs3,(a0+)
	96	fmov fs4,(a0+)
	97	fmov fs5,(a0+)
	98	fmov fs6,(a0+)
	99	fmov fs7,(a0+)
	100	fmov fs8,(a0+)
	101	fmov fs9,(a0+)
	102	fmov fs10,(a0+)
	103	fmov fs11,(a0+)
	104	fmov fs12,(a0+)
	105	fmov fs13,(a0+)
	106	fmov fs14,(a0+)
	107	fmov fs15,(a0+)
	108	fmov fs16,(a0+)
	109	fmov fs17,(a0+)
	110	fmov fs18,(a0+)
	111	fmov fs19,(a0+)
	112	fmov fs20,(a0+)
	113	fmov fs21,(a0+)
	114	fmov fs22,(a0+)
	115	fmov fs23,(a0+)
	116	fmov fs24,(a0+)
	117	fmov fs25,(a0+)
	118	fmov fs26,(a0+)
	119	fmov fs27,(a0+)
	120	fmov fs28,(a0+)
	121	fmov fs29,(a0+)
	122	fmov fs30,(a0+)
	123	fmov fs31,(a0+)
	124	fmov fpcr,d0
	125	mov d0,(a0)
	126	#ifdef CONFIG_MN10300_PROC_MN103E010
	127	nop
	128	nop
	129	#endif
	130
	131	mov d1,epsw
	132	ret [],0
	133
	134	.size fpu_save,.-fpu_save
	135
	136	###############################################################################
	137	#
	138	# void fpu_restore(struct fpu_state_struct *)
	139	# - restore the fpu state
	140	# - note that an FPU Operational exception might occur during this process
	141	#
	142	###############################################################################
	143	.globl fpu_restore
	144	.type fpu_restore,@function
	145	fpu_restore:
	146	mov epsw,d1
	147	or EPSW_FE,epsw /* enable the FPU so we can access it */
	148
	149	#ifdef CONFIG_MN10300_PROC_MN103E010
	150	nop
	151	nop
	152	#endif
	153	mov d0,a0
	154	fmov (a0+),fs0
	155	fmov (a0+),fs1
	156	fmov (a0+),fs2
	157	fmov (a0+),fs3
	158	fmov (a0+),fs4
	159	fmov (a0+),fs5
	160	fmov (a0+),fs6
	161	fmov (a0+),fs7
	162	fmov (a0+),fs8
	163	fmov (a0+),fs9
	164	fmov (a0+),fs10
	165	fmov (a0+),fs11
	166	fmov (a0+),fs12
	167	fmov (a0+),fs13
	168	fmov (a0+),fs14
	169	fmov (a0+),fs15
	170	fmov (a0+),fs16
	171	fmov (a0+),fs17
	172	fmov (a0+),fs18
	173	fmov (a0+),fs19
	174	fmov (a0+),fs20
	175	fmov (a0+),fs21
	176	fmov (a0+),fs22
	177	fmov (a0+),fs23
	178	fmov (a0+),fs24
	179	fmov (a0+),fs25
	180	fmov (a0+),fs26
	181	fmov (a0+),fs27
	182	fmov (a0+),fs28
	183	fmov (a0+),fs29
	184	fmov (a0+),fs30
	185	fmov (a0+),fs31
	186	mov (a0),d0
	187	fmov d0,fpcr
	188	#ifdef CONFIG_MN10300_PROC_MN103E010
	189	nop
	190	nop
	191	nop
	192	#endif
	193
	194	mov d1,epsw
	195	ret [],0
	196
	197	.size fpu_restore,.-fpu_restore