1 /* libunwind - a platform-independent unwind library
2 Copyright (C) 2008 CodeSourcery
4 This file is part of libunwind.
6 Permission is hereby granted, free of charge, to any person obtaining
7 a copy of this software and associated documentation files (the
8 "Software"), to deal in the Software without restriction, including
9 without limitation the rights to use, copy, modify, merge, publish,
10 distribute, sublicense, and/or sell copies of the Software, and to
11 permit persons to whom the Software is furnished to do so, subject to
12 the following conditions:
14 The above copyright notice and this permission notice shall be
15 included in all copies or substantial portions of the Software.
17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
21 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
30 #ifdef UNW_REMOTE_ONLY
32 /* unw_local_addr_space is a NULL pointer in this case. */
33 PROTECTED unw_addr_space_t unw_local_addr_space;
35 #else /* !UNW_REMOTE_ONLY */
37 static struct unw_addr_space local_addr_space;
39 PROTECTED unw_addr_space_t unw_local_addr_space = &local_addr_space;
42 uc_addr (unw_tdep_context_t *uc, int reg)
44 if (reg >= UNW_ARM_R0 && reg < UNW_ARM_R0 + 16)
45 return &uc->regs[reg - UNW_ARM_R0];
50 # ifdef UNW_LOCAL_ONLY
53 tdep_uc_addr (unw_tdep_context_t *uc, int reg)
55 return uc_addr (uc, reg);
58 # endif /* UNW_LOCAL_ONLY */
60 HIDDEN unw_dyn_info_list_t _U_dyn_info_list;
62 /* XXX fix me: there is currently no way to locate the dyn-info list
63 by a remote unwinder. On ia64, this is done via a special
64 unwind-table entry. Perhaps something similar can be done with
65 DWARF2 unwind info. */
68 get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr,
71 *dyn_info_list_addr = (unw_word_t) &_U_dyn_info_list;
76 access_mem (unw_addr_space_t as, unw_word_t addr, unw_word_t *val, int write,
81 Debug (16, "mem[%x] <- %x\n", addr, *val);
82 *(unw_word_t *) addr = *val;
86 *val = *(unw_word_t *) addr;
87 Debug (16, "mem[%x] -> %x\n", addr, *val);
93 access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val, int write,
97 unw_tdep_context_t *uc = arg;
99 if (unw_is_fpreg (reg))
102 Debug (16, "reg = %s\n", unw_regname (reg));
103 if (!(addr = uc_addr (uc, reg)))
108 *(unw_word_t *) addr = *val;
109 Debug (12, "%s <- %x\n", unw_regname (reg), *val);
113 *val = *(unw_word_t *) addr;
114 Debug (12, "%s -> %x\n", unw_regname (reg), *val);
119 Debug (1, "bad register number %u\n", reg);
124 access_fpreg (unw_addr_space_t as, unw_regnum_t reg, unw_fpreg_t *val,
125 int write, void *arg)
127 unw_tdep_context_t *uc = arg;
130 if (!unw_is_fpreg (reg))
133 if (!(addr = uc_addr (uc, reg)))
138 Debug (12, "%s <- %08lx.%08lx.%08lx\n", unw_regname (reg),
139 ((long *)val)[0], ((long *)val)[1], ((long *)val)[2]);
140 *(unw_fpreg_t *) addr = *val;
144 *val = *(unw_fpreg_t *) addr;
145 Debug (12, "%s -> %08lx.%08lx.%08lx\n", unw_regname (reg),
146 ((long *)val)[0], ((long *)val)[1], ((long *)val)[2]);
151 Debug (1, "bad register number %u\n", reg);
152 /* attempt to access a non-preserved register */
157 get_static_proc_name (unw_addr_space_t as, unw_word_t ip,
158 char *buf, size_t buf_len, unw_word_t *offp,
161 return _Uelf32_get_proc_name (as, getpid (), ip, buf, buf_len, offp);
165 arm_local_addr_space_init (void)
167 memset (&local_addr_space, 0, sizeof (local_addr_space));
168 local_addr_space.caching_policy = UNW_CACHE_GLOBAL;
169 local_addr_space.acc.find_proc_info = arm_find_proc_info;
170 local_addr_space.acc.put_unwind_info = arm_put_unwind_info;
171 local_addr_space.acc.get_dyn_info_list_addr = get_dyn_info_list_addr;
172 local_addr_space.acc.access_mem = access_mem;
173 local_addr_space.acc.access_reg = access_reg;
174 local_addr_space.acc.access_fpreg = access_fpreg;
175 local_addr_space.acc.resume = arm_local_resume;
176 local_addr_space.acc.get_proc_name = get_static_proc_name;
177 unw_flush_cache (&local_addr_space, 0, 0);
180 #endif /* !UNW_REMOTE_ONLY */