[u-boot.git] / arch / sh / lib / lshiftrt.S

/* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
   2004, 2005, 2006
   Free Software Foundation, Inc.

This file is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.

In addition to the permissions in the GNU General Public License, the
Free Software Foundation gives you unlimited permission to link the
compiled version of this file into combinations with other programs,
and to distribute those combinations without any restriction coming
from the use of this file.  (The General Public License restrictions
do apply in other respects; for example, they cover modification of
the file, and distribution when not linked into a combine
executable.)

This file is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; see the file COPYING.  If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.  */

!! libgcc routines for the Renesas / SuperH SH CPUs.
!! Contributed by Steve Chamberlain.
!! [email protected]

!! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines
!! recoded in assembly by Toshiyasu Morita
!! [email protected]

/* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and
   ELF local label prefixes by J"orn Rennecke
   [email protected]  */

!
! __lshrsi3)
!
! Entry:
!
! r4: Value to shift
! r5: Shifts
!
! Exit:
!
! r0: Result
!
! Destroys:
!
! (none)
!
	.global	__lshrsi3
	.align	2
__lshrsi3:
	mov	#31,r0
	and	r0,r5
	mova	__lshrsi3_table,r0
	mov.b	@(r0,r5),r5
#ifdef __sh1__
	add	r5,r0
	jmp	@r0
#else
	braf	r5
#endif
	mov	r4,r0

	.align	2
__lshrsi3_table:
	.byte		__lshrsi3_0-__lshrsi3_table
	.byte		__lshrsi3_1-__lshrsi3_table
	.byte		__lshrsi3_2-__lshrsi3_table
	.byte		__lshrsi3_3-__lshrsi3_table
	.byte		__lshrsi3_4-__lshrsi3_table
	.byte		__lshrsi3_5-__lshrsi3_table
	.byte		__lshrsi3_6-__lshrsi3_table
	.byte		__lshrsi3_7-__lshrsi3_table
	.byte		__lshrsi3_8-__lshrsi3_table
	.byte		__lshrsi3_9-__lshrsi3_table
	.byte		__lshrsi3_10-__lshrsi3_table
	.byte		__lshrsi3_11-__lshrsi3_table
	.byte		__lshrsi3_12-__lshrsi3_table
	.byte		__lshrsi3_13-__lshrsi3_table
	.byte		__lshrsi3_14-__lshrsi3_table
	.byte		__lshrsi3_15-__lshrsi3_table
	.byte		__lshrsi3_16-__lshrsi3_table
	.byte		__lshrsi3_17-__lshrsi3_table
	.byte		__lshrsi3_18-__lshrsi3_table
	.byte		__lshrsi3_19-__lshrsi3_table
	.byte		__lshrsi3_20-__lshrsi3_table
	.byte		__lshrsi3_21-__lshrsi3_table
	.byte		__lshrsi3_22-__lshrsi3_table
	.byte		__lshrsi3_23-__lshrsi3_table
	.byte		__lshrsi3_24-__lshrsi3_table
	.byte		__lshrsi3_25-__lshrsi3_table
	.byte		__lshrsi3_26-__lshrsi3_table
	.byte		__lshrsi3_27-__lshrsi3_table
	.byte		__lshrsi3_28-__lshrsi3_table
	.byte		__lshrsi3_29-__lshrsi3_table
	.byte		__lshrsi3_30-__lshrsi3_table
	.byte		__lshrsi3_31-__lshrsi3_table

__lshrsi3_6:
	shlr2	r0
__lshrsi3_4:
	shlr2	r0
__lshrsi3_2:
	rts
	shlr2	r0

__lshrsi3_7:
	shlr2	r0
__lshrsi3_5:
	shlr2	r0
__lshrsi3_3:
	shlr2	r0
__lshrsi3_1:
	rts
	shlr	r0

__lshrsi3_14:
	shlr2	r0
__lshrsi3_12:
	shlr2	r0
__lshrsi3_10:
	shlr2	r0
__lshrsi3_8:
	rts
	shlr8	r0

__lshrsi3_15:
	shlr2	r0
__lshrsi3_13:
	shlr2	r0
__lshrsi3_11:
	shlr2	r0
__lshrsi3_9:
	shlr8	r0
	rts
	shlr	r0

__lshrsi3_22:
	shlr2	r0
__lshrsi3_20:
	shlr2	r0
__lshrsi3_18:
	shlr2	r0
__lshrsi3_16:
	rts
	shlr16	r0

__lshrsi3_23:
	shlr2	r0
__lshrsi3_21:
	shlr2	r0
__lshrsi3_19:
	shlr2	r0
__lshrsi3_17:
	shlr16	r0
	rts
	shlr	r0

__lshrsi3_30:
	shlr2	r0
__lshrsi3_28:
	shlr2	r0
__lshrsi3_26:
	shlr2	r0
__lshrsi3_24:
	shlr16	r0
	rts
	shlr8	r0

__lshrsi3_31:
	shlr2	r0
__lshrsi3_29:
	shlr2	r0
__lshrsi3_27:
	shlr2	r0
__lshrsi3_25:
	shlr16	r0
	shlr8	r0
	rts
	shlr	r0

__lshrsi3_0:
	rts
	nop
Commit	Line	Data
eeb84df6 PE	1	/* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
	2	2004, 2005, 2006
	3	Free Software Foundation, Inc.
	4
	5	This file is free software; you can redistribute it and/or modify it
	6	under the terms of the GNU General Public License as published by the
	7	Free Software Foundation; either version 2, or (at your option) any
	8	later version.
	9
	10	In addition to the permissions in the GNU General Public License, the
	11	Free Software Foundation gives you unlimited permission to link the
	12	compiled version of this file into combinations with other programs,
	13	and to distribute those combinations without any restriction coming
	14	from the use of this file. (The General Public License restrictions
	15	do apply in other respects; for example, they cover modification of
	16	the file, and distribution when not linked into a combine
	17	executable.)
	18
	19	This file is distributed in the hope that it will be useful, but
	20	WITHOUT ANY WARRANTY; without even the implied warranty of
	21	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	22	General Public License for more details.
	23
	24	You should have received a copy of the GNU General Public License
	25	along with this program; see the file COPYING. If not, write to
	26	the Free Software Foundation, 51 Franklin Street, Fifth Floor,
	27	Boston, MA 02110-1301, USA. */
	28
	29	!! libgcc routines for the Renesas / SuperH SH CPUs.
	30	!! Contributed by Steve Chamberlain.
	31	!! [email protected]
	32
	33	!! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines
	34	!! recoded in assembly by Toshiyasu Morita
	35	!! [email protected]
	36
	37	/* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and
	38	ELF local label prefixes by J"orn Rennecke
	39	[email protected] */
	40
	41	!
	42	! __lshrsi3)
	43	!
	44	! Entry:
	45	!
	46	! r4: Value to shift
	47	! r5: Shifts
	48	!
	49	! Exit:
	50	!
	51	! r0: Result
	52	!
	53	! Destroys:
	54	!
	55	! (none)
	56	!
	57	.global __lshrsi3
	58	.align 2
	59	__lshrsi3:
	60	mov #31,r0
	61	and r0,r5
	62	mova __lshrsi3_table,r0
	63	mov.b @(r0,r5),r5
	64	#ifdef __sh1__
65	add r5,r0
66	jmp @r0
67	#else
68	braf r5
69	#endif
70	mov r4,r0
71
72	.align 2
73	__lshrsi3_table:
74	.byte __lshrsi3_0-__lshrsi3_table
75	.byte __lshrsi3_1-__lshrsi3_table
76	.byte __lshrsi3_2-__lshrsi3_table
77	.byte __lshrsi3_3-__lshrsi3_table
78	.byte __lshrsi3_4-__lshrsi3_table
79	.byte __lshrsi3_5-__lshrsi3_table
80	.byte __lshrsi3_6-__lshrsi3_table
81	.byte __lshrsi3_7-__lshrsi3_table
82	.byte __lshrsi3_8-__lshrsi3_table
83	.byte __lshrsi3_9-__lshrsi3_table
84	.byte __lshrsi3_10-__lshrsi3_table
85	.byte __lshrsi3_11-__lshrsi3_table
86	.byte __lshrsi3_12-__lshrsi3_table
87	.byte __lshrsi3_13-__lshrsi3_table
88	.byte __lshrsi3_14-__lshrsi3_table
89	.byte __lshrsi3_15-__lshrsi3_table
90	.byte __lshrsi3_16-__lshrsi3_table
91	.byte __lshrsi3_17-__lshrsi3_table
92	.byte __lshrsi3_18-__lshrsi3_table
93	.byte __lshrsi3_19-__lshrsi3_table
94	.byte __lshrsi3_20-__lshrsi3_table
95	.byte __lshrsi3_21-__lshrsi3_table
96	.byte __lshrsi3_22-__lshrsi3_table
97	.byte __lshrsi3_23-__lshrsi3_table
98	.byte __lshrsi3_24-__lshrsi3_table
99	.byte __lshrsi3_25-__lshrsi3_table
100	.byte __lshrsi3_26-__lshrsi3_table
101	.byte __lshrsi3_27-__lshrsi3_table
102	.byte __lshrsi3_28-__lshrsi3_table
103	.byte __lshrsi3_29-__lshrsi3_table
104	.byte __lshrsi3_30-__lshrsi3_table
105	.byte __lshrsi3_31-__lshrsi3_table
106
107	__lshrsi3_6:
108	shlr2 r0
109	__lshrsi3_4:
110	shlr2 r0
111	__lshrsi3_2:
112	rts
113	shlr2 r0
114
115	__lshrsi3_7:
116	shlr2 r0
117	__lshrsi3_5:
118	shlr2 r0
119	__lshrsi3_3:
120	shlr2 r0
121	__lshrsi3_1:
122	rts
123	shlr r0
124
125	__lshrsi3_14:
126	shlr2 r0
127	__lshrsi3_12:
128	shlr2 r0
129	__lshrsi3_10:
130	shlr2 r0
131	__lshrsi3_8:
132	rts
133	shlr8 r0
134
135	__lshrsi3_15:
136	shlr2 r0
137	__lshrsi3_13:
138	shlr2 r0
139	__lshrsi3_11:
140	shlr2 r0
141	__lshrsi3_9:
142	shlr8 r0
143	rts
144	shlr r0
145
146	__lshrsi3_22:
147	shlr2 r0
148	__lshrsi3_20:
149	shlr2 r0
150	__lshrsi3_18:
151	shlr2 r0
152	__lshrsi3_16:
153	rts
154	shlr16 r0
155
156	__lshrsi3_23:
157	shlr2 r0
158	__lshrsi3_21:
159	shlr2 r0
160	__lshrsi3_19:
161	shlr2 r0
162	__lshrsi3_17:
163	shlr16 r0
164	rts
165	shlr r0
166
167	__lshrsi3_30:
168	shlr2 r0
169	__lshrsi3_28:
170	shlr2 r0
171	__lshrsi3_26:
172	shlr2 r0
173	__lshrsi3_24:
174	shlr16 r0
175	rts
176	shlr8 r0
177
178	__lshrsi3_31:
179	shlr2 r0
180	__lshrsi3_29:
181	shlr2 r0
182	__lshrsi3_27:
183	shlr2 r0
184	__lshrsi3_25:
185	shlr16 r0
186	shlr8 r0
187	rts
188	shlr r0
189
190	__lshrsi3_0:
191	rts
192	nop