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- /* libunwind - a platform-independent unwind library
- Copyright (c) 2003, 2005 Hewlett-Packard Development Company, L.P.
- Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
- 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 x86_lock = PTHREAD_MUTEX_INITIALIZER;
- HIDDEN int tdep_needs_initialization = 1;
- /* See comments for svr4_dbx_register_map[] in gcc/config/i386/i386.c. */
- HIDDEN uint8_t dwarf_to_unw_regnum_map[19] =
- {
- UNW_X86_EAX, UNW_X86_ECX, UNW_X86_EDX, UNW_X86_EBX,
- UNW_X86_ESP, UNW_X86_EBP, UNW_X86_ESI, UNW_X86_EDI,
- UNW_X86_EIP, UNW_X86_EFLAGS, UNW_X86_TRAPNO,
- UNW_X86_ST0, UNW_X86_ST1, UNW_X86_ST2, UNW_X86_ST3,
- UNW_X86_ST4, UNW_X86_ST5, UNW_X86_ST6, UNW_X86_ST7
- };
- HIDDEN void
- tdep_init (void)
- {
- intrmask_t saved_mask;
- #if (!HAVE_SGX)
- sigfillset (&unwi_full_mask);
- #endif
- lock_acquire (&x86_lock, saved_mask);
- {
- if (!tdep_needs_initialization)
- /* another thread else beat us to it... */
- goto out;
- mi_init ();
- dwarf_init ();
- #ifndef UNW_REMOTE_ONLY
- x86_local_addr_space_init ();
- #endif
- tdep_needs_initialization = 0; /* signal that we're initialized... */
- }
- out:
- lock_release (&x86_lock, saved_mask);
- }
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