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65 lines
2 KiB
C
65 lines
2 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2008 CodeSourcery
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This file is part of libunwind.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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#include "unwind_i.h"
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#include "dwarf_i.h"
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HIDDEN pthread_mutex_t arm_lock = PTHREAD_MUTEX_INITIALIZER;
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HIDDEN int tdep_needs_initialization = 1;
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/* Unwinding methods to use. See UNW_METHOD_ enums */
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HIDDEN int unwi_unwind_method = UNW_ARM_METHOD_ALL;
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HIDDEN void
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tdep_init (void)
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{
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intrmask_t saved_mask;
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sigfillset (&unwi_full_mask);
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lock_acquire (&arm_lock, saved_mask);
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{
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if (!tdep_needs_initialization)
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/* another thread else beat us to it... */
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goto out;
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/* read ARM unwind method setting */
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const char* str = getenv ("UNW_ARM_UNWIND_METHOD");
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if (str)
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{
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unwi_unwind_method = atoi (str);
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}
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mi_init ();
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dwarf_init ();
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#ifndef UNW_REMOTE_ONLY
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arm_local_addr_space_init ();
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#endif
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tdep_needs_initialization = 0; /* signal that we're initialized... */
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}
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out:
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lock_release (&arm_lock, saved_mask);
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}
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