1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <tls.h>
#include <bits/wordsize.h>
#if __WORDSIZE == 64
#define LOG_SIZEOF_DTV_T 4
#else
#define LOG_SIZEOF_DTV_T 3
#endif
/* On entry, r0 points to two words, the module and the offset.
On return, r0 holds the pointer to the relevant TLS memory.
Only registers r25..r29 are clobbered by the call. */
.text
ENTRY (__tls_get_addr)
{
lnk r25
ADDI_PTR r27, tp, DTV_OFFSET
}
.Llnk:
#ifdef __tilegx__
{
LD_PTR r27, r27 /* r27 = THREAD_DTV() */
moveli r26, hw1_last(_rtld_local + TLS_GENERATION_OFFSET - .Llnk)
}
shl16insli r26, r26, hw0(_rtld_local + TLS_GENERATION_OFFSET - .Llnk)
{
ADD_PTR r25, r25, r26
LD_PTR r26, r0 /* r26 = ti_module */
}
#else
{
LD_PTR r27, r27 /* r27 = THREAD_DTV() */
addli r25, r25, lo16(_rtld_local + TLS_GENERATION_OFFSET - .Llnk)
}
{
auli r25, r25, ha16(_rtld_local + TLS_GENERATION_OFFSET - .Llnk)
LD_PTR r26, r0 /* r26 = ti_module */
}
#endif
LD_PTR r25, r25 /* r25 = DL(dl_tls_generation) */
{
LD_PTR r28, r27 /* r28 = THREAD_DTV()->counter */
ADDI_PTR r29, r0, __SIZEOF_POINTER__
}
{
LD_PTR r29, r29 /* r29 = ti_offset */
CMPEQ r25, r28, r25 /* r25 nonzero if generation OK */
shli r28, r26, LOG_SIZEOF_DTV_T /* byte index into dtv array */
}
{
BEQZ r25, .Lslowpath
CMPEQI r25, r26, -1 /* r25 nonzero if ti_module invalid */
}
{
BNEZ r25, .Lslowpath
ADD_PTR r28, r28, r27 /* pointer into module array */
}
LD_PTR r26, r28 /* r26 = module TLS pointer */
CMPEQI r25, r26, -1 /* check r26 == TLS_DTV_UNALLOCATED */
BNEZ r25, .Lslowpath
{
ADD_PTR r0, r26, r29
jrp lr
}
.Lslowpath:
{
ST sp, lr
ADDLI_PTR r29, sp, - (25 * REGSIZE)
}
cfi_offset (lr, 0)
{
ST r29, sp
ADDLI_PTR sp, sp, - (26 * REGSIZE)
}
cfi_def_cfa_offset (26 * REGSIZE)
ADDI_PTR r29, sp, (2 * REGSIZE)
{ ST r29, r1; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r2; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r3; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r4; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r5; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r6; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r7; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r8; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r9; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r10; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r11; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r12; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r13; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r14; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r15; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r16; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r17; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r18; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r19; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r20; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r21; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r22; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r23; ADDI_PTR r29, r29, REGSIZE }
{ ST r29, r24; ADDI_PTR r29, r29, REGSIZE }
.hidden __tls_get_addr_slow
jal __tls_get_addr_slow
ADDI_PTR r29, sp, (2 * REGSIZE)
{ LD r1, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r2, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r3, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r4, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r5, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r6, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r7, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r8, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r9, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r10, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r11, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r12, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r13, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r14, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r15, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r16, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r17, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r18, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r19, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r20, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r21, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r22, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r23, r29; ADDI_PTR r29, r29, REGSIZE }
{ LD r24, r29; ADDLI_PTR sp, sp, (26 * REGSIZE) }
cfi_def_cfa_offset (0)
LD lr, sp
jrp lr
END (__tls_get_addr)
|
