1 /* libunwind - a platform-independent unwind library
2 Copyright (C) 2008 CodeSourcery
3 Copyright (C) 2012 Tommi Rantala <tt.rantala@gmail.com>
4 Copyright (C) 2013 Linaro Limited
6 This file is part of libunwind.
8 Permission is hereby granted, free of charge, to any person obtaining
9 a copy of this software and associated documentation files (the
10 "Software"), to deal in the Software without restriction, including
11 without limitation the rights to use, copy, modify, merge, publish,
12 distribute, sublicense, and/or sell copies of the Software, and to
13 permit persons to whom the Software is furnished to do so, subject to
14 the following conditions:
16 The above copyright notice and this permission notice shall be
17 included in all copies or substantial portions of the Software.
19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
22 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
23 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
24 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
25 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
32 #ifdef UNW_REMOTE_ONLY
34 /* unw_local_addr_space is a NULL pointer in this case. */
35 PROTECTED unw_addr_space_t unw_local_addr_space;
37 #else /* !UNW_REMOTE_ONLY */
39 static struct unw_addr_space local_addr_space;
41 PROTECTED unw_addr_space_t unw_local_addr_space = &local_addr_space;
44 uc_addr (ucontext_t *uc, int reg)
46 if (reg >= UNW_AARCH64_X0 && reg <= UNW_AARCH64_V31)
47 return &uc->uc_mcontext.regs[reg];
52 # ifdef UNW_LOCAL_ONLY
55 tdep_uc_addr (ucontext_t *uc, int reg)
57 return uc_addr (uc, reg);
60 # endif /* UNW_LOCAL_ONLY */
62 HIDDEN unw_dyn_info_list_t _U_dyn_info_list;
64 /* XXX fix me: there is currently no way to locate the dyn-info list
65 by a remote unwinder. On ia64, this is done via a special
66 unwind-table entry. Perhaps something similar can be done with
67 DWARF2 unwind info. */
70 put_unwind_info (unw_addr_space_t as, unw_proc_info_t *proc_info, void *arg)
76 get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr,
79 *dyn_info_list_addr = (unw_word_t) &_U_dyn_info_list;
84 access_mem (unw_addr_space_t as, unw_word_t addr, unw_word_t *val, int write,
89 Debug (16, "mem[%lx] <- %lx\n", addr, *val);
90 *(unw_word_t *) addr = *val;
94 *val = *(unw_word_t *) addr;
95 Debug (16, "mem[%lx] -> %lx\n", addr, *val);
101 access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val, int write,
105 ucontext_t *uc = arg;
107 if (unw_is_fpreg (reg))
110 if (!(addr = uc_addr (uc, reg)))
115 *(unw_word_t *) addr = *val;
116 Debug (12, "%s <- %lx\n", unw_regname (reg), *val);
120 *val = *(unw_word_t *) addr;
121 Debug (12, "%s -> %lx\n", unw_regname (reg), *val);
126 Debug (1, "bad register number %u\n", reg);
131 access_fpreg (unw_addr_space_t as, unw_regnum_t reg, unw_fpreg_t *val,
132 int write, void *arg)
134 ucontext_t *uc = arg;
137 if (!unw_is_fpreg (reg))
140 if (!(addr = uc_addr (uc, reg)))
145 Debug (12, "%s <- %08lx.%08lx.%08lx\n", unw_regname (reg),
146 ((long *)val)[0], ((long *)val)[1], ((long *)val)[2]);
147 *(unw_fpreg_t *) addr = *val;
151 *val = *(unw_fpreg_t *) addr;
152 Debug (12, "%s -> %08lx.%08lx.%08lx\n", unw_regname (reg),
153 ((long *)val)[0], ((long *)val)[1], ((long *)val)[2]);
158 Debug (1, "bad register number %u\n", reg);
159 /* attempt to access a non-preserved register */
164 get_static_proc_name (unw_addr_space_t as, unw_word_t ip,
165 char *buf, size_t buf_len, unw_word_t *offp,
168 return _Uelf64_get_proc_name (as, getpid (), ip, buf, buf_len, offp);
172 aarch64_local_addr_space_init (void)
174 memset (&local_addr_space, 0, sizeof (local_addr_space));
175 local_addr_space.caching_policy = UNW_CACHE_GLOBAL;
176 local_addr_space.acc.find_proc_info = dwarf_find_proc_info;
177 local_addr_space.acc.put_unwind_info = put_unwind_info;
178 local_addr_space.acc.get_dyn_info_list_addr = get_dyn_info_list_addr;
179 local_addr_space.acc.access_mem = access_mem;
180 local_addr_space.acc.access_reg = access_reg;
181 local_addr_space.acc.access_fpreg = access_fpreg;
182 local_addr_space.acc.resume = aarch64_local_resume;
183 local_addr_space.acc.get_proc_name = get_static_proc_name;
184 local_addr_space.big_endian = (__BYTE_ORDER == __BIG_ENDIAN);
185 unw_flush_cache (&local_addr_space, 0, 0);
188 #endif /* !UNW_REMOTE_ONLY */