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-rw-r--r--arch/score/lib/Makefile8
-rw-r--r--arch/score/lib/ashldi3.c46
-rw-r--r--arch/score/lib/ashrdi3.c48
-rw-r--r--arch/score/lib/checksum.S255
-rw-r--r--arch/score/lib/checksum_copy.c52
-rw-r--r--arch/score/lib/cmpdi2.c44
-rw-r--r--arch/score/lib/libgcc.h37
-rw-r--r--arch/score/lib/lshrdi3.c47
-rw-r--r--arch/score/lib/string.S196
-rw-r--r--arch/score/lib/ucmpdi2.c38
10 files changed, 771 insertions, 0 deletions
diff --git a/arch/score/lib/Makefile b/arch/score/lib/Makefile
new file mode 100644
index 000000000000..553e30e81faf
--- /dev/null
+++ b/arch/score/lib/Makefile
@@ -0,0 +1,8 @@
1#
2# Makefile for SCORE-specific library files..
3#
4
5lib-y += string.o checksum.o checksum_copy.o
6
7# libgcc-style stuff needed in the kernel
8obj-y += ashldi3.o ashrdi3.o cmpdi2.o lshrdi3.o ucmpdi2.o
diff --git a/arch/score/lib/ashldi3.c b/arch/score/lib/ashldi3.c
new file mode 100644
index 000000000000..15691a910431
--- /dev/null
+++ b/arch/score/lib/ashldi3.c
@@ -0,0 +1,46 @@
1/*
2 * arch/score/lib/ashldi3.c
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see the file COPYING, or write
16 * to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20#include <linux/module.h>
21#include "libgcc.h"
22
23long long __ashldi3(long long u, word_type b)
24{
25 DWunion uu, w;
26 word_type bm;
27
28 if (b == 0)
29 return u;
30
31 uu.ll = u;
32 bm = 32 - b;
33
34 if (bm <= 0) {
35 w.s.low = 0;
36 w.s.high = (unsigned int) uu.s.low << -bm;
37 } else {
38 const unsigned int carries = (unsigned int) uu.s.low >> bm;
39
40 w.s.low = (unsigned int) uu.s.low << b;
41 w.s.high = ((unsigned int) uu.s.high << b) | carries;
42 }
43
44 return w.ll;
45}
46EXPORT_SYMBOL(__ashldi3);
diff --git a/arch/score/lib/ashrdi3.c b/arch/score/lib/ashrdi3.c
new file mode 100644
index 000000000000..d9814a5d8d30
--- /dev/null
+++ b/arch/score/lib/ashrdi3.c
@@ -0,0 +1,48 @@
1/*
2 * arch/score/lib/ashrdi3.c
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see the file COPYING, or write
16 * to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20#include <linux/module.h>
21#include "libgcc.h"
22
23long long __ashrdi3(long long u, word_type b)
24{
25 DWunion uu, w;
26 word_type bm;
27
28 if (b == 0)
29 return u;
30
31 uu.ll = u;
32 bm = 32 - b;
33
34 if (bm <= 0) {
35 /* w.s.high = 1..1 or 0..0 */
36 w.s.high =
37 uu.s.high >> 31;
38 w.s.low = uu.s.high >> -bm;
39 } else {
40 const unsigned int carries = (unsigned int) uu.s.high << bm;
41
42 w.s.high = uu.s.high >> b;
43 w.s.low = ((unsigned int) uu.s.low >> b) | carries;
44 }
45
46 return w.ll;
47}
48EXPORT_SYMBOL(__ashrdi3);
diff --git a/arch/score/lib/checksum.S b/arch/score/lib/checksum.S
new file mode 100644
index 000000000000..706157edc7d5
--- /dev/null
+++ b/arch/score/lib/checksum.S
@@ -0,0 +1,255 @@
1/*
2 * arch/score/lib/csum_partial.S
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Lennox Wu <lennox.wu@sunplusct.com>
8 * Chen Liqin <liqin.chen@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25#include <linux/linkage.h>
26
27#define ADDC(sum,reg) \
28 add sum, sum, reg; \
29 cmp.c reg, sum; \
30 bleu 9f; \
31 addi sum, 0x1; \
329:
33
34#define CSUM_BIGCHUNK(src, offset, sum) \
35 lw r8, [src, offset + 0x00]; \
36 lw r9, [src, offset + 0x04]; \
37 lw r10, [src, offset + 0x08]; \
38 lw r11, [src, offset + 0x0c]; \
39 ADDC(sum, r8); \
40 ADDC(sum, r9); \
41 ADDC(sum, r10); \
42 ADDC(sum, r11); \
43 lw r8, [src, offset + 0x10]; \
44 lw r9, [src, offset + 0x14]; \
45 lw r10, [src, offset + 0x18]; \
46 lw r11, [src, offset + 0x1c]; \
47 ADDC(sum, r8); \
48 ADDC(sum, r9); \
49 ADDC(sum, r10); \
50 ADDC(sum, r11); \
51
52#define src r4
53#define dest r5
54#define sum r27
55
56 .text
57/* unknown src alignment and < 8 bytes to go */
58small_csumcpy:
59 mv r5, r10
60 ldi r9, 0x0
61 cmpi.c r25, 0x1
62 beq pass_small_set_t7 /*already set, jump to pass_small_set_t7*/
63 andri.c r25,r4 , 0x1 /*Is src 2 bytes aligned?*/
64
65pass_small_set_t7:
66 beq aligned
67 cmpi.c r5, 0x0
68 beq fold
69 lbu r9, [src]
70 slli r9,r9, 0x8 /*Little endian*/
71 ADDC(sum, r9)
72 addi src, 0x1
73 subi.c r5, 0x1
74
75 /*len still a full word */
76aligned:
77 andri.c r8, r5, 0x4 /*Len >= 4?*/
78 beq len_less_4bytes
79
80 /* Still a full word (4byte) to go,and the src is word aligned.*/
81 andri.c r8, src, 0x3 /*src is 4bytes aligned, so use LW!!*/
82 beq four_byte_aligned
83 lhu r9, [src]
84 addi src, 2
85 ADDC(sum, r9)
86 lhu r9, [src]
87 addi src, 2
88 ADDC(sum, r9)
89 b len_less_4bytes
90
91four_byte_aligned: /* Len >=4 and four byte aligned */
92 lw r9, [src]
93 addi src, 4
94 ADDC(sum, r9)
95
96len_less_4bytes: /* 2 byte aligned aligned and length<4B */
97 andri.c r8, r5, 0x2
98 beq len_less_2bytes
99 lhu r9, [src]
100 addi src, 0x2 /* src+=2 */
101 ADDC(sum, r9)
102
103len_less_2bytes: /* len = 1 */
104 andri.c r8, r5, 0x1
105 beq fold /* less than 2 and not equal 1--> len=0 -> fold */
106 lbu r9, [src]
107
108fold_ADDC:
109 ADDC(sum, r9)
110fold:
111 /* fold checksum */
112 slli r26, sum, 16
113 add sum, sum, r26
114 cmp.c r26, sum
115 srli sum, sum, 16
116 bleu 1f /* if r26<=sum */
117 addi sum, 0x1 /* r26>sum */
1181:
119 /* odd buffer alignment? r25 was set in csum_partial */
120 cmpi.c r25, 0x0
121 beq 1f
122 slli r26, sum, 8
123 srli sum, sum, 8
124 or sum, sum, r26
125 andi sum, 0xffff
1261:
127 .set optimize
128 /* Add the passed partial csum. */
129 ADDC(sum, r6)
130 mv r4, sum
131 br r3
132 .set volatile
133
134 .align 5
135ENTRY(csum_partial)
136 ldi sum, 0
137 ldi r25, 0
138 mv r10, r5
139 cmpi.c r5, 0x8
140 blt small_csumcpy /* < 8(singed) bytes to copy */
141 cmpi.c r5, 0x0
142 beq out
143 andri.c r25, src, 0x1 /* odd buffer? */
144
145 beq word_align
146hword_align: /* 1 byte */
147 lbu r8, [src]
148 subi r5, 0x1
149 slli r8, r8, 8
150 ADDC(sum, r8)
151 addi src, 0x1
152
153word_align: /* 2 bytes */
154 andri.c r8, src, 0x2 /* 4bytes(dword)_aligned? */
155 beq dword_align /* not, maybe dword_align */
156 lhu r8, [src]
157 subi r5, 0x2
158 ADDC(sum, r8)
159 addi src, 0x2
160
161dword_align: /* 4bytes */
162 mv r26, r5 /* maybe useless when len >=56 */
163 ldi r8, 56
164 cmp.c r8, r5
165 bgtu do_end_words /* if a1(len)<t0(56) ,unsigned */
166 andri.c r26, src, 0x4
167 beq qword_align
168 lw r8, [src]
169 subi r5, 0x4
170 ADDC(sum, r8)
171 addi src, 0x4
172
173qword_align: /* 8 bytes */
174 andri.c r26, src, 0x8
175 beq oword_align
176 lw r8, [src, 0x0]
177 lw r9, [src, 0x4]
178 subi r5, 0x8 /* len-=0x8 */
179 ADDC(sum, r8)
180 ADDC(sum, r9)
181 addi src, 0x8
182
183oword_align: /* 16bytes */
184 andri.c r26, src, 0x10
185 beq begin_movement
186 lw r10, [src, 0x08]
187 lw r11, [src, 0x0c]
188 lw r8, [src, 0x00]
189 lw r9, [src, 0x04]
190 ADDC(sum, r10)
191 ADDC(sum, r11)
192 ADDC(sum, r8)
193 ADDC(sum, r9)
194 subi r5, 0x10
195 addi src, 0x10
196
197begin_movement:
198 srli.c r26, r5, 0x7 /* len>=128? */
199 beq 1f /* len<128 */
200
201/* r26 is the result that computed in oword_align */
202move_128bytes:
203 CSUM_BIGCHUNK(src, 0x00, sum)
204 CSUM_BIGCHUNK(src, 0x20, sum)
205 CSUM_BIGCHUNK(src, 0x40, sum)
206 CSUM_BIGCHUNK(src, 0x60, sum)
207 subi.c r26, 0x01 /* r26 equals len/128 */
208 addi src, 0x80
209 bne move_128bytes
210
2111: /* len<128,we process 64byte here */
212 andri.c r10, r5, 0x40
213 beq 1f
214
215move_64bytes:
216 CSUM_BIGCHUNK(src, 0x00, sum)
217 CSUM_BIGCHUNK(src, 0x20, sum)
218 addi src, 0x40
219
2201: /* len<64 */
221 andri r26, r5, 0x1c /* 0x1c=28 */
222 andri.c r10, r5, 0x20
223 beq do_end_words /* decided by andri */
224
225move_32bytes:
226 CSUM_BIGCHUNK(src, 0x00, sum)
227 andri r26, r5, 0x1c
228 addri src, src, 0x20
229
230do_end_words: /* len<32 */
231 /* r26 was set already in dword_align */
232 cmpi.c r26, 0x0
233 beq maybe_end_cruft /* len<28 or len<56 */
234 srli r26, r26, 0x2
235
236end_words:
237 lw r8, [src]
238 subi.c r26, 0x1 /* unit is 4 byte */
239 ADDC(sum, r8)
240 addi src, 0x4
241 cmpi.c r26, 0x0
242 bne end_words /* r26!=0 */
243
244maybe_end_cruft: /* len<4 */
245 andri r10, r5, 0x3
246
247small_memcpy:
248 mv r5, r10
249 j small_csumcpy
250
251out:
252 mv r4, sum
253 br r3
254
255END(csum_partial)
diff --git a/arch/score/lib/checksum_copy.c b/arch/score/lib/checksum_copy.c
new file mode 100644
index 000000000000..04565dd3ded8
--- /dev/null
+++ b/arch/score/lib/checksum_copy.c
@@ -0,0 +1,52 @@
1/*
2 * arch/score/lib/csum_partial_copy.c
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Lennox Wu <lennox.wu@sunplusct.com>
8 * Chen Liqin <liqin.chen@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <net/checksum.h>
27
28#include <asm/uaccess.h>
29
30unsigned int csum_partial_copy(const char *src, char *dst,
31 int len, unsigned int sum)
32{
33 sum = csum_partial(src, len, sum);
34 memcpy(dst, src, len);
35
36 return sum;
37}
38
39unsigned int csum_partial_copy_from_user(const char *src, char *dst,
40 int len, unsigned int sum,
41 int *err_ptr)
42{
43 int missing;
44
45 missing = copy_from_user(dst, src, len);
46 if (missing) {
47 memset(dst + len - missing, 0, missing);
48 *err_ptr = -EFAULT;
49 }
50
51 return csum_partial(dst, len, sum);
52}
diff --git a/arch/score/lib/cmpdi2.c b/arch/score/lib/cmpdi2.c
new file mode 100644
index 000000000000..1ed5290c66ed
--- /dev/null
+++ b/arch/score/lib/cmpdi2.c
@@ -0,0 +1,44 @@
1/*
2 * arch/score/lib/cmpdi2.c
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see the file COPYING, or write
16 * to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20#include <linux/module.h>
21#include "libgcc.h"
22
23word_type __cmpdi2(long long a, long long b)
24{
25 const DWunion au = {
26 .ll = a
27 };
28 const DWunion bu = {
29 .ll = b
30 };
31
32 if (au.s.high < bu.s.high)
33 return 0;
34 else if (au.s.high > bu.s.high)
35 return 2;
36
37 if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
38 return 0;
39 else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
40 return 2;
41
42 return 1;
43}
44EXPORT_SYMBOL(__cmpdi2);
diff --git a/arch/score/lib/libgcc.h b/arch/score/lib/libgcc.h
new file mode 100644
index 000000000000..0f12543d9f31
--- /dev/null
+++ b/arch/score/lib/libgcc.h
@@ -0,0 +1,37 @@
1/*
2 * arch/score/lib/libgcc.h
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see the file COPYING, or write
16 * to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20
21#ifndef __ASM_LIBGCC_H
22#define __ASM_LIBGCC_H
23
24#include <asm/byteorder.h>
25
26typedef int word_type __attribute__((mode(__word__)));
27
28struct DWstruct {
29 int low, high;
30};
31
32typedef union {
33 struct DWstruct s;
34 long long ll;
35} DWunion;
36
37#endif /* __ASM_LIBGCC_H */
diff --git a/arch/score/lib/lshrdi3.c b/arch/score/lib/lshrdi3.c
new file mode 100644
index 000000000000..ce21175fd791
--- /dev/null
+++ b/arch/score/lib/lshrdi3.c
@@ -0,0 +1,47 @@
1/*
2 * arch/score/lib/lshrdi3.c
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see the file COPYING, or write
16 * to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20
21#include <linux/module.h>
22#include "libgcc.h"
23
24long long __lshrdi3(long long u, word_type b)
25{
26 DWunion uu, w;
27 word_type bm;
28
29 if (b == 0)
30 return u;
31
32 uu.ll = u;
33 bm = 32 - b;
34
35 if (bm <= 0) {
36 w.s.high = 0;
37 w.s.low = (unsigned int) uu.s.high >> -bm;
38 } else {
39 const unsigned int carries = (unsigned int) uu.s.high << bm;
40
41 w.s.high = (unsigned int) uu.s.high >> b;
42 w.s.low = ((unsigned int) uu.s.low >> b) | carries;
43 }
44
45 return w.ll;
46}
47EXPORT_SYMBOL(__lshrdi3);
diff --git a/arch/score/lib/string.S b/arch/score/lib/string.S
new file mode 100644
index 000000000000..943d0911ea89
--- /dev/null
+++ b/arch/score/lib/string.S
@@ -0,0 +1,196 @@
1/*
2 * arch/score/lib/string.S
3 *
4 * Score Processor version.
5 *
6 * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
7 * Chen Liqin <liqin.chen@sunplusct.com>
8 * Lennox Wu <lennox.wu@sunplusct.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see the file COPYING, or write
22 * to the Free Software Foundation, Inc.,
23 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include <linux/linkage.h>
27#include <asm-generic/errno.h>
28
29 .text
30 .align 2
31ENTRY(__strncpy_from_user)
32 cmpi.c r6, 0
33 mv r9, r6
34 ble .L2
350: lbu r7, [r5]
36 ldi r8, 0
371: sb r7, [r4]
382: lb r6, [r5]
39 cmp.c r6, r8
40 beq .L2
41
42.L5:
43 addi r8, 1
44 cmp.c r8, r9
45 beq .L7
463: lbu r6, [r5, 1]+
474: sb r6, [r4, 1]+
485: lb r7, [r5]
49 cmpi.c r7, 0
50 bne .L5
51.L7:
52 mv r4, r8
53 br r3
54.L2:
55 ldi r8, 0
56 mv r4, r8
57 br r3
58 .section .fixup, "ax"
5999:
60 ldi r4, -EFAULT
61 br r3
62 .previous
63 .section __ex_table, "a"
64 .align 2
65 .word 0b ,99b
66 .word 1b ,99b
67 .word 2b ,99b
68 .word 3b ,99b
69 .word 4b ,99b
70 .word 5b ,99b
71 .previous
72
73 .align 2
74ENTRY(__strnlen_user)
75 cmpi.c r5, 0
76 ble .L11
770: lb r6, [r4]
78 ldi r7, 0
79 cmp.c r6, r7
80 beq .L11
81.L15:
82 addi r7, 1
83 cmp.c r7, r5
84 beq .L23
851: lb r6, [r4,1]+
86 cmpi.c r6, 0
87 bne .L15
88.L23:
89 addri r4, r7, 1
90 br r3
91
92.L11:
93 ldi r4, 1
94 br r3
95 .section .fixup, "ax"
9699:
97 ldi r4, 0
98 br r3
99
100 .section __ex_table,"a"
101 .align 2
102 .word 0b, 99b
103 .word 1b, 99b
104 .previous
105
106 .align 2
107ENTRY(__strlen_user)
1080: lb r6, [r4]
109 mv r7, r4
110 extsb r6, r6
111 cmpi.c r6, 0
112 mv r4, r6
113 beq .L27
114.L28:
1151: lb r6, [r7, 1]+
116 addi r6, 1
117 cmpi.c r6, 0
118 bne .L28
119.L27:
120 br r3
121 .section .fixup, "ax"
122 ldi r4, 0x0
123 br r3
12499:
125 ldi r4, 0
126 br r3
127 .previous
128 .section __ex_table, "a"
129 .align 2
130 .word 0b ,99b
131 .word 1b ,99b
132 .previous
133
134 .align 2
135ENTRY(__copy_tofrom_user)
136 cmpi.c r6, 0
137 mv r10,r6
138 beq .L32
139 ldi r9, 0
140.L34:
141 add r6, r5, r9
1420: lbu r8, [r6]
143 add r7, r4, r9
1441: sb r8, [r7]
145 addi r9, 1
146 cmp.c r9, r10
147 bne .L34
148.L32:
149 ldi r4, 0
150 br r3
151 .section .fixup, "ax"
15299:
153 sub r4, r10, r9
154 br r3
155 .previous
156 .section __ex_table, "a"
157 .align 2
158 .word 0b, 99b
159 .word 1b, 99b
160 .previous
161
162 .align 2
163ENTRY(__clear_user)
164 cmpi.c r5, 0
165 beq .L38
166 ldi r6, 0
167 mv r7, r6
168.L40:
169 addi r6, 1
1700: sb r7, [r4]+, 1
171 cmp.c r6, r5
172 bne .L40
173.L38:
174 ldi r4, 0
175 br r3
176
177 .section .fixup, "ax"
178 br r3
179 .previous
180 .section __ex_table, "a"
181 .align 2
18299:
183 .word 0b, 99b
184 .previous
185
186 .align 2
187ENTRY(__put_user_unknown)
188 .set volatile
189 ldi r4, -EFAULT
190 br r3
191
192 .align 2
193ENTRY(__get_user_unknown)
194 ldi r5, 0
195 ldi r4, -EFAULT
196 br r3
diff --git a/arch/score/lib/ucmpdi2.c b/arch/score/lib/ucmpdi2.c
new file mode 100644
index 000000000000..b15241e0b079
--- /dev/null
+++ b/arch/score/lib/ucmpdi2.c
@@ -0,0 +1,38 @@
1/*
2 * arch/score/lib/ucmpdi2.c
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see the file COPYING, or write
16 * to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20#include <linux/module.h>
21#include "libgcc.h"
22
23word_type __ucmpdi2(unsigned long long a, unsigned long long b)
24{
25 const DWunion au = {.ll = a};
26 const DWunion bu = {.ll = b};
27
28 if ((unsigned int) au.s.high < (unsigned int) bu.s.high)
29 return 0;
30 else if ((unsigned int) au.s.high > (unsigned int) bu.s.high)
31 return 2;
32 if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
33 return 0;
34 else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
35 return 2;
36 return 1;
37}
38EXPORT_SYMBOL(__ucmpdi2);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-03 14:22:42 -0500