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- /* libunwind - a platform-independent unwind library
- Copyright (C) 2008 CodeSourcery
- This file is part of libunwind.
- Permission is hereby granted, free of charge, to any person obtaining
- a copy of this software and associated documentation files (the
- "Software"), to deal in the Software without restriction, including
- without limitation the rights to use, copy, modify, merge, publish,
- distribute, sublicense, and/or sell copies of the Software, and to
- permit persons to whom the Software is furnished to do so, subject to
- the following conditions:
- The above copyright notice and this permission notice shall be
- included in all copies or substantial portions of the Software.
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
- #include "unwind_i.h"
- #include "dwarf_i.h"
- HIDDEN pthread_mutex_t arm_lock = PTHREAD_MUTEX_INITIALIZER;
- HIDDEN int tdep_needs_initialization = 1;
- /* Unwinding methods to use. See UNW_METHOD_ enums */
- HIDDEN int unwi_unwind_method = UNW_ARM_METHOD_ALL;
- /* FIXME: I'm pretty sure we don't need this at all for ARM, but "generic"
- code (include/dwarf_i.h) seems to expect it to be here at present. */
- HIDDEN uint8_t dwarf_to_unw_regnum_map[16] =
- {
- /* 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 */
- UNW_ARM_R0, UNW_ARM_R1, UNW_ARM_R2, UNW_ARM_R3, UNW_ARM_R4, UNW_ARM_R5,
- UNW_ARM_R6, UNW_ARM_R7, UNW_ARM_R8, UNW_ARM_R9, UNW_ARM_R10, UNW_ARM_R11,
- UNW_ARM_R12, UNW_ARM_R13, UNW_ARM_R14, UNW_ARM_R15
- };
- HIDDEN void
- tdep_init (void)
- {
- intrmask_t saved_mask;
- sigfillset (&unwi_full_mask);
- lock_acquire (&arm_lock, saved_mask);
- {
- if (!tdep_needs_initialization)
- /* another thread else beat us to it... */
- goto out;
- /* read ARM unwind method setting */
- const char* str = getenv ("UNW_ARM_UNWIND_METHOD");
- if (str)
- {
- unwi_unwind_method = atoi (str);
- }
- mi_init ();
- dwarf_init ();
- #ifndef UNW_REMOTE_ONLY
- arm_local_addr_space_init ();
- #endif
- tdep_needs_initialization = 0; /* signal that we're initialized... */
- }
- out:
- lock_release (&arm_lock, saved_mask);
- }
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