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1 | # |
1 | # |
2 | # Copyright (C) 2005 Jakub Jermar |
2 | # Copyright (C) 2005 Jakub Jermar |
3 | # All rights reserved. |
3 | # All rights reserved. |
4 | # |
4 | # |
5 | # Redistribution and use in source and binary forms, with or without |
5 | # Redistribution and use in source and binary forms, with or without |
6 | # modification, are permitted provided that the following conditions |
6 | # modification, are permitted provided that the following conditions |
7 | # are met: |
7 | # are met: |
8 | # |
8 | # |
9 | # - Redistributions of source code must retain the above copyright |
9 | # - Redistributions of source code must retain the above copyright |
10 | # notice, this list of conditions and the following disclaimer. |
10 | # notice, this list of conditions and the following disclaimer. |
11 | # - Redistributions in binary form must reproduce the above copyright |
11 | # - Redistributions in binary form must reproduce the above copyright |
12 | # notice, this list of conditions and the following disclaimer in the |
12 | # notice, this list of conditions and the following disclaimer in the |
13 | # documentation and/or other materials provided with the distribution. |
13 | # documentation and/or other materials provided with the distribution. |
14 | # - The name of the author may not be used to endorse or promote products |
14 | # - The name of the author may not be used to endorse or promote products |
15 | # derived from this software without specific prior written permission. |
15 | # derived from this software without specific prior written permission. |
16 | # |
16 | # |
17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | # |
27 | # |
28 | 28 | ||
29 | #include <arch/stack.h> |
29 | #include <arch/stack.h> |
30 | #include <arch/regdef.h> |
30 | #include <arch/regdef.h> |
31 | 31 | ||
32 | .text |
32 | .text |
33 | 33 | ||
34 | .global memcpy |
34 | .global memcpy |
35 | .global memcpy_from_uspace |
35 | .global memcpy_from_uspace |
36 | .global memcpy_to_uspace |
36 | .global memcpy_to_uspace |
37 | .global memcpy_from_uspace_failover_address |
37 | .global memcpy_from_uspace_failover_address |
38 | .global memcpy_to_uspace_failover_address |
38 | .global memcpy_to_uspace_failover_address |
39 | .global memsetb |
39 | .global memsetb |
40 | 40 | ||
41 | 41 | ||
42 | memcpy: |
42 | memcpy: |
43 | memcpy_from_uspace: |
43 | memcpy_from_uspace: |
44 | memcpy_to_uspace: |
44 | memcpy_to_uspace: |
45 | .register %g2, #scratch |
45 | .register %g2, #scratch |
46 | .register %g3, #scratch |
46 | .register %g3, #scratch |
47 | add %o1, 7, %g1 |
47 | add %o1, 7, %g1 |
48 | and %g1, -8, %g1 |
48 | and %g1, -8, %g1 |
49 | cmp %o1, %g1 |
49 | cmp %o1, %g1 |
50 | be,pn %xcc, 3f |
50 | be,pn %xcc, 3f |
51 | add %o0, 7, %g1 |
51 | add %o0, 7, %g1 |
52 | mov 0, %g3 |
52 | mov 0, %g3 |
53 | 0: |
53 | 0: |
54 | brz,pn %o2, 2f |
54 | brz,pn %o2, 2f |
55 | mov 0, %g2 |
55 | mov 0, %g2 |
56 | 1: |
56 | 1: |
57 | ldub [%g3 + %o1], %g1 |
57 | ldub [%g3 + %o1], %g1 |
58 | add %g2, 1, %g2 |
58 | add %g2, 1, %g2 |
59 | cmp %o2, %g2 |
59 | cmp %o2, %g2 |
60 | stb %g1, [%g3 + %o0] |
60 | stb %g1, [%g3 + %o0] |
61 | bne,pt %xcc, 1b |
61 | bne,pt %xcc, 1b |
62 | mov %g2, %g3 |
62 | mov %g2, %g3 |
63 | 2: |
63 | 2: |
64 | jmp %o7 + 8 ! exit point |
64 | jmp %o7 + 8 ! exit point |
65 | mov %o1, %o0 |
65 | mov %o1, %o0 |
66 | 3: |
66 | 3: |
67 | and %g1, -8, %g1 |
67 | and %g1, -8, %g1 |
68 | cmp %o0, %g1 |
68 | cmp %o0, %g1 |
69 | bne,pt %xcc, 0b |
69 | bne,pt %xcc, 0b |
70 | mov 0, %g3 |
70 | mov 0, %g3 |
71 | srlx %o2, 3, %g4 |
71 | srlx %o2, 3, %g4 |
72 | brz,pn %g4, 5f |
72 | brz,pn %g4, 5f |
73 | mov 0, %g5 |
73 | mov 0, %g5 |
74 | 4: |
74 | 4: |
75 | sllx %g3, 3, %g2 |
75 | sllx %g3, 3, %g2 |
76 | add %g5, 1, %g3 |
76 | add %g5, 1, %g3 |
77 | ldx [%o1 + %g2], %g1 |
77 | ldx [%o1 + %g2], %g1 |
78 | mov %g3, %g5 |
78 | mov %g3, %g5 |
79 | cmp %g4, %g3 |
79 | cmp %g4, %g3 |
80 | bne,pt %xcc, 4b |
80 | bne,pt %xcc, 4b |
81 | stx %g1, [%o0 + %g2] |
81 | stx %g1, [%o0 + %g2] |
82 | 5: |
82 | 5: |
83 | and %o2, 7, %o2 |
83 | and %o2, 7, %o2 |
84 | brz,pn %o2, 2b |
84 | brz,pn %o2, 2b |
85 | sllx %g4, 3, %g1 |
85 | sllx %g4, 3, %g1 |
86 | mov 0, %g2 |
86 | mov 0, %g2 |
87 | add %g1, %o0, %o0 |
87 | add %g1, %o0, %o0 |
88 | add %g1, %o1, %g4 |
88 | add %g1, %o1, %g4 |
89 | mov 0, %g3 |
89 | mov 0, %g3 |
90 | 6: |
90 | 6: |
91 | ldub [%g2 + %g4], %g1 |
91 | ldub [%g2 + %g4], %g1 |
92 | stb %g1, [%g2 + %o0] |
92 | stb %g1, [%g2 + %o0] |
93 | add %g3, 1, %g2 |
93 | add %g3, 1, %g2 |
94 | cmp %o2, %g2 |
94 | cmp %o2, %g2 |
95 | bne,pt %xcc, 6b |
95 | bne,pt %xcc, 6b |
96 | mov %g2, %g3 |
96 | mov %g2, %g3 |
97 | 97 | ||
98 | jmp %o7 + 8 ! exit point |
98 | jmp %o7 + 8 ! exit point |
99 | mov %o1, %o0 |
99 | mov %o1, %o0 |
100 | 100 | ||
101 | memcpy_from_uspace_failover_address: |
101 | memcpy_from_uspace_failover_address: |
102 | memcpy_to_uspace_failover_address: |
102 | memcpy_to_uspace_failover_address: |
103 | jmp %o7 + 8 ! exit point |
103 | jmp %o7 + 8 ! exit point |
104 | mov %g0, %o0 ! return 0 on failure |
104 | mov %g0, %o0 ! return 0 on failure |
105 | 105 | ||
106 | memsetb: |
106 | memsetb: |
107 | b _memsetb |
107 | b _memsetb |
108 | nop |
108 | nop |
- | 109 | ||
- | 110 | ||
- | 111 | .macro WRITE_ALTERNATE_REGISTER reg, bit |
|
- | 112 | save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp |
|
- | 113 | rdpr %pstate, %l0 |
|
- | 114 | wrpr %l0, \bit, %pstate |
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- | 115 | mov %i0, \reg |
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- | 116 | wrpr %l0, 0, %pstate |
|
- | 117 | ret |
|
- | 118 | restore |
|
- | 119 | .endm |
|
- | 120 | ||
- | 121 | .macro READ_ALTERNATE_REGISTER reg, bit |
|
- | 122 | save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp |
|
- | 123 | rdpr %pstate, %l0 |
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- | 124 | wrpr %l0, \bit, %pstate |
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- | 125 | mov \reg, %i0 |
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- | 126 | wrpr %l0, 0, %pstate |
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- | 127 | ret |
|
- | 128 | restore |
|
- | 129 | .endm |
|
- | 130 | ||
- | 131 | .global write_to_ag_g6 |
|
- | 132 | write_to_ag_g6: |
|
- | 133 | WRITE_ALTERNATE_REGISTER %g6, PSTATE_AG_BIT |
|
- | 134 | ||
- | 135 | .global write_to_ag_g7 |
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- | 136 | write_to_ag_g7: |
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- | 137 | WRITE_ALTERNATE_REGISTER %g7, PSTATE_AG_BIT |
|
- | 138 | ||
- | 139 | .global write_to_ig_g6 |
|
- | 140 | write_to_ig_g6: |
|
- | 141 | WRITE_ALTERNATE_REGISTER %g6, PSTATE_IG_BIT |
|
- | 142 | ||
- | 143 | .global read_from_ag_g7 |
|
- | 144 | read_from_ag_g7: |
|
- | 145 | READ_ALTERNATE_REGISTER %g7, PSTATE_AG_BIT |
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109 | 146 | ||
110 | - | ||
111 |
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- | |
112 | - | ||
113 | - | ||
114 | - |