| /* 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 define_lock (x86_lock); |
| HIDDEN int tdep_init_done; |
| |
| /* See comments for svr4_dbx_register_map[] in gcc/config/i386/i386.c. */ |
| |
| HIDDEN const 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; |
| |
| sigfillset (&unwi_full_mask); |
| |
| lock_acquire (&x86_lock, saved_mask); |
| { |
| if (tdep_init_done) |
| /* another thread else beat us to it... */ |
| goto out; |
| |
| mi_init (); |
| |
| dwarf_init (); |
| |
| #ifndef UNW_REMOTE_ONLY |
| x86_local_addr_space_init (); |
| #endif |
| tdep_init_done = 1; /* signal that we're initialized... */ |
| } |
| out: |
| lock_release (&x86_lock, saved_mask); |
| } |