1 /* libunwind - a platform-independent unwind library
2 Copyright (C) 2002-2005 Hewlett-Packard Co
3 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
4
5 This file is part of libunwind.
6
7 Permission is hereby granted, free of charge, to any person obtaining
8 a copy of this software and associated documentation files (the
9 "Software"), to deal in the Software without restriction, including
10 without limitation the rights to use, copy, modify, merge, publish,
11 distribute, sublicense, and/or sell copies of the Software, and to
12 permit persons to whom the Software is furnished to do so, subject to
13 the following conditions:
14
15 The above copyright notice and this permission notice shall be
16 included in all copies or substantial portions of the Software.
17
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
22 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
25
26 #include <assert.h>
27
28 #include "unwind_i.h"
29
30 HIDDEN struct ia64_global_unwind_state unw =
31 {
32 .lock = PTHREAD_MUTEX_INITIALIZER,
33 .save_order = {
34 IA64_REG_IP, IA64_REG_PFS, IA64_REG_PSP, IA64_REG_PR,
35 IA64_REG_UNAT, IA64_REG_LC, IA64_REG_FPSR, IA64_REG_PRI_UNAT_GR
36 },
37 #if UNW_DEBUG
38 .preg_name = {
39 "pri_unat_gr", "pri_unat_mem", "psp", "bsp", "bspstore",
40 "ar.pfs", "ar.rnat", "rp",
41 "r4", "r5", "r6", "r7",
42 "nat4", "nat5", "nat6", "nat7",
43 "ar.unat", "pr", "ar.lc", "ar.fpsr",
44 "b1", "b2", "b3", "b4", "b5",
45 "f2", "f3", "f4", "f5",
46 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
47 "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31"
48 }
49 #endif
50 };
51
52 HIDDEN void
tdep_init(void)53 tdep_init (void)
54 {
55 const uint8_t f1_bytes[16] = {
56 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
57 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
58 };
59 const uint8_t nat_val_bytes[16] = {
60 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xff, 0xfe,
61 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
62 };
63 const uint8_t int_val_bytes[16] = {
64 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x3e,
65 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
66 };
67 intrmask_t saved_mask;
68 uint8_t *lep, *bep;
69 long i;
70
71 sigfillset (&unwi_full_mask);
72
73 lock_acquire (&unw.lock, saved_mask);
74 {
75 if (tdep_init_done)
76 /* another thread else beat us to it... */
77 goto out;
78
79 mi_init ();
80
81 mempool_init (&unw.reg_state_pool, sizeof (struct ia64_reg_state), 0);
82 mempool_init (&unw.labeled_state_pool,
83 sizeof (struct ia64_labeled_state), 0);
84
85 unw.read_only.r0 = 0;
86 unw.read_only.f0.raw.bits[0] = 0;
87 unw.read_only.f0.raw.bits[1] = 0;
88
89 lep = (uint8_t *) &unw.read_only.f1_le + 16;
90 bep = (uint8_t *) &unw.read_only.f1_be;
91 for (i = 0; i < 16; ++i)
92 {
93 *--lep = f1_bytes[i];
94 *bep++ = f1_bytes[i];
95 }
96
97 lep = (uint8_t *) &unw.nat_val_le + 16;
98 bep = (uint8_t *) &unw.nat_val_be;
99 for (i = 0; i < 16; ++i)
100 {
101 *--lep = nat_val_bytes[i];
102 *bep++ = nat_val_bytes[i];
103 }
104
105 lep = (uint8_t *) &unw.int_val_le + 16;
106 bep = (uint8_t *) &unw.int_val_be;
107 for (i = 0; i < 16; ++i)
108 {
109 *--lep = int_val_bytes[i];
110 *bep++ = int_val_bytes[i];
111 }
112
113 assert (8*sizeof(unw_hash_index_t) >= IA64_LOG_UNW_HASH_SIZE);
114
115 #ifndef UNW_REMOTE_ONLY
116 ia64_local_addr_space_init ();
117 #endif
118 tdep_init_done = 1; /* signal that we're initialized... */
119 }
120 out:
121 lock_release (&unw.lock, saved_mask);
122 }
123