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1/* csum_copy.S: Checksum+copy code for sparc64
2 *
3 * Copyright (C) 2005 David S. Miller <davem@davemloft.net>
4 */
5
6#ifdef __KERNEL__
7#define GLOBAL_SPARE %g7
8#else
9#define GLOBAL_SPARE %g5
10#endif
11
12#ifndef EX_LD
13#define EX_LD(x) x
14#endif
15
16#ifndef EX_ST
17#define EX_ST(x) x
18#endif
19
20#ifndef EX_RETVAL
21#define EX_RETVAL(x) x
22#endif
23
24#ifndef LOAD
25#define LOAD(type,addr,dest) type [addr], dest
26#endif
27
28#ifndef STORE
29#define STORE(type,src,addr) type src, [addr]
30#endif
31
32#ifndef FUNC_NAME
33#define FUNC_NAME csum_partial_copy_nocheck
34#endif
35
36 .register %g2, #scratch
37 .register %g3, #scratch
38
39 .text
40
4190:
42 /* We checked for zero length already, so there must be
43 * at least one byte.
44 */
45 be,pt %icc, 1f
46 nop
47 EX_LD(LOAD(ldub, %o0 + 0x00, %o4))
48 add %o0, 1, %o0
49 sub %o2, 1, %o2
50 EX_ST(STORE(stb, %o4, %o1 + 0x00))
51 add %o1, 1, %o1
521: andcc %o0, 0x2, %g0
53 be,pn %icc, 80f
54 cmp %o2, 2
55 blu,pn %icc, 60f
56 nop
57 EX_LD(LOAD(lduh, %o0 + 0x00, %o5))
58 add %o0, 2, %o0
59 sub %o2, 2, %o2
60 EX_ST(STORE(sth, %o5, %o1 + 0x00))
61 add %o1, 2, %o1
62 ba,pt %xcc, 80f
63 add %o5, %o4, %o4
64
65 .globl FUNC_NAME
66FUNC_NAME: /* %o0=src, %o1=dst, %o2=len, %o3=sum */
67 LOAD(prefetch, %o0 + 0x000, #n_reads)
68 xor %o0, %o1, %g1
69 clr %o4
70 andcc %g1, 0x3, %g0
71 bne,pn %icc, 95f
72 LOAD(prefetch, %o0 + 0x040, #n_reads)
73
74 brz,pn %o2, 70f
75 andcc %o0, 0x3, %g0
76
77 /* We "remember" whether the lowest bit in the address
78 * was set in GLOBAL_SPARE. Because if it is, we have to swap
79 * upper and lower 8 bit fields of the sum we calculate.
80 */
81 bne,pn %icc, 90b
82 andcc %o0, 0x1, GLOBAL_SPARE
83
8480:
85 LOAD(prefetch, %o0 + 0x080, #n_reads)
86 andncc %o2, 0x3f, %g3
87
88 LOAD(prefetch, %o0 + 0x0c0, #n_reads)
89 sub %o2, %g3, %o2
90 brz,pn %g3, 2f
91 LOAD(prefetch, %o0 + 0x100, #n_reads)
92
93 /* So that we don't need to use the non-pairing
94 * add-with-carry instructions we accumulate 32-bit
95 * values into a 64-bit register. At the end of the
96 * loop we fold it down to 32-bits and so on.
97 */
98 ba,pt %xcc, 1f
99 LOAD(prefetch, %o0 + 0x140, #n_reads)
100
101 .align 32
1021: EX_LD(LOAD(lduw, %o0 + 0x00, %o5))
103 EX_LD(LOAD(lduw, %o0 + 0x04, %g1))
104 EX_LD(LOAD(lduw, %o0 + 0x08, %g2))
105 add %o4, %o5, %o4
106 EX_ST(STORE(stw, %o5, %o1 + 0x00))
107 EX_LD(LOAD(lduw, %o0 + 0x0c, %o5))
108 add %o4, %g1, %o4
109 EX_ST(STORE(stw, %g1, %o1 + 0x04))
110 EX_LD(LOAD(lduw, %o0 + 0x10, %g1))
111 add %o4, %g2, %o4
112 EX_ST(STORE(stw, %g2, %o1 + 0x08))
113 EX_LD(LOAD(lduw, %o0 + 0x14, %g2))
114 add %o4, %o5, %o4
115 EX_ST(STORE(stw, %o5, %o1 + 0x0c))
116 EX_LD(LOAD(lduw, %o0 + 0x18, %o5))
117 add %o4, %g1, %o4
118 EX_ST(STORE(stw, %g1, %o1 + 0x10))
119 EX_LD(LOAD(lduw, %o0 + 0x1c, %g1))
120 add %o4, %g2, %o4
121 EX_ST(STORE(stw, %g2, %o1 + 0x14))
122 EX_LD(LOAD(lduw, %o0 + 0x20, %g2))
123 add %o4, %o5, %o4
124 EX_ST(STORE(stw, %o5, %o1 + 0x18))
125 EX_LD(LOAD(lduw, %o0 + 0x24, %o5))
126 add %o4, %g1, %o4
127 EX_ST(STORE(stw, %g1, %o1 + 0x1c))
128 EX_LD(LOAD(lduw, %o0 + 0x28, %g1))
129 add %o4, %g2, %o4
130 EX_ST(STORE(stw, %g2, %o1 + 0x20))
131 EX_LD(LOAD(lduw, %o0 + 0x2c, %g2))
132 add %o4, %o5, %o4
133 EX_ST(STORE(stw, %o5, %o1 + 0x24))
134 EX_LD(LOAD(lduw, %o0 + 0x30, %o5))
135 add %o4, %g1, %o4
136 EX_ST(STORE(stw, %g1, %o1 + 0x28))
137 EX_LD(LOAD(lduw, %o0 + 0x34, %g1))
138 add %o4, %g2, %o4
139 EX_ST(STORE(stw, %g2, %o1 + 0x2c))
140 EX_LD(LOAD(lduw, %o0 + 0x38, %g2))
141 add %o4, %o5, %o4
142 EX_ST(STORE(stw, %o5, %o1 + 0x30))
143 EX_LD(LOAD(lduw, %o0 + 0x3c, %o5))
144 add %o4, %g1, %o4
145 EX_ST(STORE(stw, %g1, %o1 + 0x34))
146 LOAD(prefetch, %o0 + 0x180, #n_reads)
147 add %o4, %g2, %o4
148 EX_ST(STORE(stw, %g2, %o1 + 0x38))
149 subcc %g3, 0x40, %g3
150 add %o0, 0x40, %o0
151 add %o4, %o5, %o4
152 EX_ST(STORE(stw, %o5, %o1 + 0x3c))
153 bne,pt %icc, 1b
154 add %o1, 0x40, %o1
155
1562: and %o2, 0x3c, %g3
157 brz,pn %g3, 2f
158 sub %o2, %g3, %o2
1591: EX_LD(LOAD(lduw, %o0 + 0x00, %o5))
160 subcc %g3, 0x4, %g3
161 add %o0, 0x4, %o0
162 add %o4, %o5, %o4
163 EX_ST(STORE(stw, %o5, %o1 + 0x00))
164 bne,pt %icc, 1b
165 add %o1, 0x4, %o1
166
1672:
168 /* fold 64-->32 */
169 srlx %o4, 32, %o5
170 srl %o4, 0, %o4
171 add %o4, %o5, %o4
172 srlx %o4, 32, %o5
173 srl %o4, 0, %o4
174 add %o4, %o5, %o4
175
176 /* fold 32-->16 */
177 sethi %hi(0xffff0000), %g1
178 srl %o4, 16, %o5
179 andn %o4, %g1, %g2
180 add %o5, %g2, %o4
181 srl %o4, 16, %o5
182 andn %o4, %g1, %g2
183 add %o5, %g2, %o4
184
18560:
186 /* %o4 has the 16-bit sum we have calculated so-far. */
187 cmp %o2, 2
188 blu,pt %icc, 1f
189 nop
190 EX_LD(LOAD(lduh, %o0 + 0x00, %o5))
191 sub %o2, 2, %o2
192 add %o0, 2, %o0
193 add %o4, %o5, %o4
194 EX_ST(STORE(sth, %o5, %o1 + 0x00))
195 add %o1, 0x2, %o1
1961: brz,pt %o2, 1f
197 nop
198 EX_LD(LOAD(ldub, %o0 + 0x00, %o5))
199 sub %o2, 1, %o2
200 add %o0, 1, %o0
201 EX_ST(STORE(stb, %o5, %o1 + 0x00))
202 sllx %o5, 8, %o5
203 add %o1, 1, %o1
204 add %o4, %o5, %o4
2051:
206 /* fold 32-->16 */
207 sethi %hi(0xffff0000), %g1
208 srl %o4, 16, %o5
209 andn %o4, %g1, %g2
210 add %o5, %g2, %o4
211 srl %o4, 16, %o5
212 andn %o4, %g1, %g2
213 add %o5, %g2, %o4
214
2151: brz,pt GLOBAL_SPARE, 1f
216 nop
217
218 /* We started with an odd byte, byte-swap the result. */
219 srl %o4, 8, %o5
220 and %o4, 0xff, %g1
221 sll %g1, 8, %g1
222 or %o5, %g1, %o4
223
2241: addcc %o3, %o4, %o3
225 addc %g0, %o3, %o3
226
22770:
228 retl
229 srl %o3, 0, %o0
230
23195: mov 0, GLOBAL_SPARE
232 brlez,pn %o2, 4f
233 andcc %o0, 1, %o5
234 be,a,pt %icc, 1f
235 srl %o2, 1, %g1
236 sub %o2, 1, %o2
237 EX_LD(LOAD(ldub, %o0, GLOBAL_SPARE))
238 add %o0, 1, %o0
239 EX_ST(STORE(stb, GLOBAL_SPARE, %o1))
240 srl %o2, 1, %g1
241 add %o1, 1, %o1
2421: brz,a,pn %g1, 3f
243 andcc %o2, 1, %g0
244 andcc %o0, 2, %g0
245 be,a,pt %icc, 1f
246 srl %g1, 1, %g1
247 EX_LD(LOAD(lduh, %o0, %o4))
248 sub %o2, 2, %o2
249 srl %o4, 8, %g2
250 sub %g1, 1, %g1
251 EX_ST(STORE(stb, %g2, %o1))
252 add %o4, GLOBAL_SPARE, GLOBAL_SPARE
253 EX_ST(STORE(stb, %o4, %o1 + 1))
254 add %o0, 2, %o0
255 srl %g1, 1, %g1
256 add %o1, 2, %o1
2571: brz,a,pn %g1, 2f
258 andcc %o2, 2, %g0
259 EX_LD(LOAD(lduw, %o0, %o4))
2605: srl %o4, 24, %g2
261 srl %o4, 16, %g3
262 EX_ST(STORE(stb, %g2, %o1))
263 srl %o4, 8, %g2
264 EX_ST(STORE(stb, %g3, %o1 + 1))
265 add %o0, 4, %o0
266 EX_ST(STORE(stb, %g2, %o1 + 2))
267 addcc %o4, GLOBAL_SPARE, GLOBAL_SPARE
268 EX_ST(STORE(stb, %o4, %o1 + 3))
269 addc GLOBAL_SPARE, %g0, GLOBAL_SPARE
270 add %o1, 4, %o1
271 subcc %g1, 1, %g1
272 bne,a,pt %icc, 5b
273 EX_LD(LOAD(lduw, %o0, %o4))
274 sll GLOBAL_SPARE, 16, %g2
275 srl GLOBAL_SPARE, 16, GLOBAL_SPARE
276 srl %g2, 16, %g2
277 andcc %o2, 2, %g0
278 add %g2, GLOBAL_SPARE, GLOBAL_SPARE
2792: be,a,pt %icc, 3f
280 andcc %o2, 1, %g0
281 EX_LD(LOAD(lduh, %o0, %o4))
282 andcc %o2, 1, %g0
283 srl %o4, 8, %g2
284 add %o0, 2, %o0
285 EX_ST(STORE(stb, %g2, %o1))
286 add GLOBAL_SPARE, %o4, GLOBAL_SPARE
287 EX_ST(STORE(stb, %o4, %o1 + 1))
288 add %o1, 2, %o1
2893: be,a,pt %icc, 1f
290 sll GLOBAL_SPARE, 16, %o4
291 EX_LD(LOAD(ldub, %o0, %g2))
292 sll %g2, 8, %o4
293 EX_ST(STORE(stb, %g2, %o1))
294 add GLOBAL_SPARE, %o4, GLOBAL_SPARE
295 sll GLOBAL_SPARE, 16, %o4
2961: addcc %o4, GLOBAL_SPARE, GLOBAL_SPARE
297 srl GLOBAL_SPARE, 16, %o4
298 addc %g0, %o4, GLOBAL_SPARE
299 brz,pt %o5, 4f
300 srl GLOBAL_SPARE, 8, %o4
301 and GLOBAL_SPARE, 0xff, %g2
302 and %o4, 0xff, %o4
303 sll %g2, 8, %g2
304 or %g2, %o4, GLOBAL_SPARE
3054: addcc %o3, GLOBAL_SPARE, %o3
306 addc %g0, %o3, %o0
307 retl
308 srl %o0, 0, %o0
309 .size FUNC_NAME, .-FUNC_NAME
1/* csum_copy.S: Checksum+copy code for sparc64
2 *
3 * Copyright (C) 2005 David S. Miller <davem@davemloft.net>
4 */
5
6#include <asm/export.h>
7
8#ifdef __KERNEL__
9#define GLOBAL_SPARE %g7
10#else
11#define GLOBAL_SPARE %g5
12#endif
13
14#ifndef EX_LD
15#define EX_LD(x) x
16#endif
17
18#ifndef EX_ST
19#define EX_ST(x) x
20#endif
21
22#ifndef EX_RETVAL
23#define EX_RETVAL(x) x
24#endif
25
26#ifndef LOAD
27#define LOAD(type,addr,dest) type [addr], dest
28#endif
29
30#ifndef STORE
31#define STORE(type,src,addr) type src, [addr]
32#endif
33
34#ifndef FUNC_NAME
35#define FUNC_NAME csum_partial_copy_nocheck
36#endif
37
38 .register %g2, #scratch
39 .register %g3, #scratch
40
41 .text
42
4390:
44 /* We checked for zero length already, so there must be
45 * at least one byte.
46 */
47 be,pt %icc, 1f
48 nop
49 EX_LD(LOAD(ldub, %o0 + 0x00, %o4))
50 add %o0, 1, %o0
51 sub %o2, 1, %o2
52 EX_ST(STORE(stb, %o4, %o1 + 0x00))
53 add %o1, 1, %o1
541: andcc %o0, 0x2, %g0
55 be,pn %icc, 80f
56 cmp %o2, 2
57 blu,pn %icc, 60f
58 nop
59 EX_LD(LOAD(lduh, %o0 + 0x00, %o5))
60 add %o0, 2, %o0
61 sub %o2, 2, %o2
62 EX_ST(STORE(sth, %o5, %o1 + 0x00))
63 add %o1, 2, %o1
64 ba,pt %xcc, 80f
65 add %o5, %o4, %o4
66
67 .globl FUNC_NAME
68 EXPORT_SYMBOL(FUNC_NAME)
69FUNC_NAME: /* %o0=src, %o1=dst, %o2=len, %o3=sum */
70 LOAD(prefetch, %o0 + 0x000, #n_reads)
71 xor %o0, %o1, %g1
72 clr %o4
73 andcc %g1, 0x3, %g0
74 bne,pn %icc, 95f
75 LOAD(prefetch, %o0 + 0x040, #n_reads)
76
77 brz,pn %o2, 70f
78 andcc %o0, 0x3, %g0
79
80 /* We "remember" whether the lowest bit in the address
81 * was set in GLOBAL_SPARE. Because if it is, we have to swap
82 * upper and lower 8 bit fields of the sum we calculate.
83 */
84 bne,pn %icc, 90b
85 andcc %o0, 0x1, GLOBAL_SPARE
86
8780:
88 LOAD(prefetch, %o0 + 0x080, #n_reads)
89 andncc %o2, 0x3f, %g3
90
91 LOAD(prefetch, %o0 + 0x0c0, #n_reads)
92 sub %o2, %g3, %o2
93 brz,pn %g3, 2f
94 LOAD(prefetch, %o0 + 0x100, #n_reads)
95
96 /* So that we don't need to use the non-pairing
97 * add-with-carry instructions we accumulate 32-bit
98 * values into a 64-bit register. At the end of the
99 * loop we fold it down to 32-bits and so on.
100 */
101 ba,pt %xcc, 1f
102 LOAD(prefetch, %o0 + 0x140, #n_reads)
103
104 .align 32
1051: EX_LD(LOAD(lduw, %o0 + 0x00, %o5))
106 EX_LD(LOAD(lduw, %o0 + 0x04, %g1))
107 EX_LD(LOAD(lduw, %o0 + 0x08, %g2))
108 add %o4, %o5, %o4
109 EX_ST(STORE(stw, %o5, %o1 + 0x00))
110 EX_LD(LOAD(lduw, %o0 + 0x0c, %o5))
111 add %o4, %g1, %o4
112 EX_ST(STORE(stw, %g1, %o1 + 0x04))
113 EX_LD(LOAD(lduw, %o0 + 0x10, %g1))
114 add %o4, %g2, %o4
115 EX_ST(STORE(stw, %g2, %o1 + 0x08))
116 EX_LD(LOAD(lduw, %o0 + 0x14, %g2))
117 add %o4, %o5, %o4
118 EX_ST(STORE(stw, %o5, %o1 + 0x0c))
119 EX_LD(LOAD(lduw, %o0 + 0x18, %o5))
120 add %o4, %g1, %o4
121 EX_ST(STORE(stw, %g1, %o1 + 0x10))
122 EX_LD(LOAD(lduw, %o0 + 0x1c, %g1))
123 add %o4, %g2, %o4
124 EX_ST(STORE(stw, %g2, %o1 + 0x14))
125 EX_LD(LOAD(lduw, %o0 + 0x20, %g2))
126 add %o4, %o5, %o4
127 EX_ST(STORE(stw, %o5, %o1 + 0x18))
128 EX_LD(LOAD(lduw, %o0 + 0x24, %o5))
129 add %o4, %g1, %o4
130 EX_ST(STORE(stw, %g1, %o1 + 0x1c))
131 EX_LD(LOAD(lduw, %o0 + 0x28, %g1))
132 add %o4, %g2, %o4
133 EX_ST(STORE(stw, %g2, %o1 + 0x20))
134 EX_LD(LOAD(lduw, %o0 + 0x2c, %g2))
135 add %o4, %o5, %o4
136 EX_ST(STORE(stw, %o5, %o1 + 0x24))
137 EX_LD(LOAD(lduw, %o0 + 0x30, %o5))
138 add %o4, %g1, %o4
139 EX_ST(STORE(stw, %g1, %o1 + 0x28))
140 EX_LD(LOAD(lduw, %o0 + 0x34, %g1))
141 add %o4, %g2, %o4
142 EX_ST(STORE(stw, %g2, %o1 + 0x2c))
143 EX_LD(LOAD(lduw, %o0 + 0x38, %g2))
144 add %o4, %o5, %o4
145 EX_ST(STORE(stw, %o5, %o1 + 0x30))
146 EX_LD(LOAD(lduw, %o0 + 0x3c, %o5))
147 add %o4, %g1, %o4
148 EX_ST(STORE(stw, %g1, %o1 + 0x34))
149 LOAD(prefetch, %o0 + 0x180, #n_reads)
150 add %o4, %g2, %o4
151 EX_ST(STORE(stw, %g2, %o1 + 0x38))
152 subcc %g3, 0x40, %g3
153 add %o0, 0x40, %o0
154 add %o4, %o5, %o4
155 EX_ST(STORE(stw, %o5, %o1 + 0x3c))
156 bne,pt %icc, 1b
157 add %o1, 0x40, %o1
158
1592: and %o2, 0x3c, %g3
160 brz,pn %g3, 2f
161 sub %o2, %g3, %o2
1621: EX_LD(LOAD(lduw, %o0 + 0x00, %o5))
163 subcc %g3, 0x4, %g3
164 add %o0, 0x4, %o0
165 add %o4, %o5, %o4
166 EX_ST(STORE(stw, %o5, %o1 + 0x00))
167 bne,pt %icc, 1b
168 add %o1, 0x4, %o1
169
1702:
171 /* fold 64-->32 */
172 srlx %o4, 32, %o5
173 srl %o4, 0, %o4
174 add %o4, %o5, %o4
175 srlx %o4, 32, %o5
176 srl %o4, 0, %o4
177 add %o4, %o5, %o4
178
179 /* fold 32-->16 */
180 sethi %hi(0xffff0000), %g1
181 srl %o4, 16, %o5
182 andn %o4, %g1, %g2
183 add %o5, %g2, %o4
184 srl %o4, 16, %o5
185 andn %o4, %g1, %g2
186 add %o5, %g2, %o4
187
18860:
189 /* %o4 has the 16-bit sum we have calculated so-far. */
190 cmp %o2, 2
191 blu,pt %icc, 1f
192 nop
193 EX_LD(LOAD(lduh, %o0 + 0x00, %o5))
194 sub %o2, 2, %o2
195 add %o0, 2, %o0
196 add %o4, %o5, %o4
197 EX_ST(STORE(sth, %o5, %o1 + 0x00))
198 add %o1, 0x2, %o1
1991: brz,pt %o2, 1f
200 nop
201 EX_LD(LOAD(ldub, %o0 + 0x00, %o5))
202 sub %o2, 1, %o2
203 add %o0, 1, %o0
204 EX_ST(STORE(stb, %o5, %o1 + 0x00))
205 sllx %o5, 8, %o5
206 add %o1, 1, %o1
207 add %o4, %o5, %o4
2081:
209 /* fold 32-->16 */
210 sethi %hi(0xffff0000), %g1
211 srl %o4, 16, %o5
212 andn %o4, %g1, %g2
213 add %o5, %g2, %o4
214 srl %o4, 16, %o5
215 andn %o4, %g1, %g2
216 add %o5, %g2, %o4
217
2181: brz,pt GLOBAL_SPARE, 1f
219 nop
220
221 /* We started with an odd byte, byte-swap the result. */
222 srl %o4, 8, %o5
223 and %o4, 0xff, %g1
224 sll %g1, 8, %g1
225 or %o5, %g1, %o4
226
2271: addcc %o3, %o4, %o3
228 addc %g0, %o3, %o3
229
23070:
231 retl
232 srl %o3, 0, %o0
233
23495: mov 0, GLOBAL_SPARE
235 brlez,pn %o2, 4f
236 andcc %o0, 1, %o5
237 be,a,pt %icc, 1f
238 srl %o2, 1, %g1
239 sub %o2, 1, %o2
240 EX_LD(LOAD(ldub, %o0, GLOBAL_SPARE))
241 add %o0, 1, %o0
242 EX_ST(STORE(stb, GLOBAL_SPARE, %o1))
243 srl %o2, 1, %g1
244 add %o1, 1, %o1
2451: brz,a,pn %g1, 3f
246 andcc %o2, 1, %g0
247 andcc %o0, 2, %g0
248 be,a,pt %icc, 1f
249 srl %g1, 1, %g1
250 EX_LD(LOAD(lduh, %o0, %o4))
251 sub %o2, 2, %o2
252 srl %o4, 8, %g2
253 sub %g1, 1, %g1
254 EX_ST(STORE(stb, %g2, %o1))
255 add %o4, GLOBAL_SPARE, GLOBAL_SPARE
256 EX_ST(STORE(stb, %o4, %o1 + 1))
257 add %o0, 2, %o0
258 srl %g1, 1, %g1
259 add %o1, 2, %o1
2601: brz,a,pn %g1, 2f
261 andcc %o2, 2, %g0
262 EX_LD(LOAD(lduw, %o0, %o4))
2635: srl %o4, 24, %g2
264 srl %o4, 16, %g3
265 EX_ST(STORE(stb, %g2, %o1))
266 srl %o4, 8, %g2
267 EX_ST(STORE(stb, %g3, %o1 + 1))
268 add %o0, 4, %o0
269 EX_ST(STORE(stb, %g2, %o1 + 2))
270 addcc %o4, GLOBAL_SPARE, GLOBAL_SPARE
271 EX_ST(STORE(stb, %o4, %o1 + 3))
272 addc GLOBAL_SPARE, %g0, GLOBAL_SPARE
273 add %o1, 4, %o1
274 subcc %g1, 1, %g1
275 bne,a,pt %icc, 5b
276 EX_LD(LOAD(lduw, %o0, %o4))
277 sll GLOBAL_SPARE, 16, %g2
278 srl GLOBAL_SPARE, 16, GLOBAL_SPARE
279 srl %g2, 16, %g2
280 andcc %o2, 2, %g0
281 add %g2, GLOBAL_SPARE, GLOBAL_SPARE
2822: be,a,pt %icc, 3f
283 andcc %o2, 1, %g0
284 EX_LD(LOAD(lduh, %o0, %o4))
285 andcc %o2, 1, %g0
286 srl %o4, 8, %g2
287 add %o0, 2, %o0
288 EX_ST(STORE(stb, %g2, %o1))
289 add GLOBAL_SPARE, %o4, GLOBAL_SPARE
290 EX_ST(STORE(stb, %o4, %o1 + 1))
291 add %o1, 2, %o1
2923: be,a,pt %icc, 1f
293 sll GLOBAL_SPARE, 16, %o4
294 EX_LD(LOAD(ldub, %o0, %g2))
295 sll %g2, 8, %o4
296 EX_ST(STORE(stb, %g2, %o1))
297 add GLOBAL_SPARE, %o4, GLOBAL_SPARE
298 sll GLOBAL_SPARE, 16, %o4
2991: addcc %o4, GLOBAL_SPARE, GLOBAL_SPARE
300 srl GLOBAL_SPARE, 16, %o4
301 addc %g0, %o4, GLOBAL_SPARE
302 brz,pt %o5, 4f
303 srl GLOBAL_SPARE, 8, %o4
304 and GLOBAL_SPARE, 0xff, %g2
305 and %o4, 0xff, %o4
306 sll %g2, 8, %g2
307 or %g2, %o4, GLOBAL_SPARE
3084: addcc %o3, GLOBAL_SPARE, %o3
309 addc %g0, %o3, %o0
310 retl
311 srl %o0, 0, %o0
312 .size FUNC_NAME, .-FUNC_NAME