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22ca263109
_after_ everything is initialized. (Logical change 1.121)
142 lines
4.2 KiB
C
142 lines
4.2 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2002-2003 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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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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struct ia64_global_unwind_state unw =
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{
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.needs_initialization = 1,
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.lock = PTHREAD_MUTEX_INITIALIZER,
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.save_order = {
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IA64_REG_IP, IA64_REG_PFS, IA64_REG_PSP, IA64_REG_PR,
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IA64_REG_UNAT, IA64_REG_LC, IA64_REG_FPSR, IA64_REG_PRI_UNAT_GR
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},
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#if UNW_DEBUG
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.debug_level = 0,
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.preg_name = {
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"pri_unat_gr", "pri_unat_mem", "psp", "bsp", "bspstore",
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"ar.pfs", "ar.rnat", "rp",
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"r4", "r5", "r6", "r7",
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"nat4", "nat5", "nat6", "nat7",
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"ar.unat", "pr", "ar.lc", "ar.fpsr",
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"b1", "b2", "b3", "b4", "b5",
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"f2", "f3", "f4", "f5",
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"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
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"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31"
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}
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#endif
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};
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#ifndef UNW_REMOTE_ONLY
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/* Note: It might be tempting to use the LSDA to store
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_U_dyn_info_list, but that wouldn't work because the
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unwind-info is generally mapped read-only. */
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HIDDEN unw_dyn_info_list_t _U_dyn_info_list;
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#endif
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HIDDEN void
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ia64_init (void)
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{
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extern void unw_hash_index_t_is_too_narrow (void);
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uint8_t f1_bytes[16] = {
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
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0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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uint8_t nat_val_bytes[16] = {
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0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xff, 0xfe,
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0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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uint8_t int_val_bytes[16] = {
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0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xff, 0xfe,
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0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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sigset_t saved_sigmask;
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uint8_t *lep, *bep;
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long i;
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sigfillset (&unwi_full_sigmask);
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sigprocmask (SIG_SETMASK, &unwi_full_sigmask, &saved_sigmask);
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mutex_lock (&unw.lock);
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{
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if (!unw.needs_initialization)
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/* another thread else beat us to it... */
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goto out;
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mi_init ();
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mempool_init (&unw.reg_state_pool, sizeof (struct ia64_reg_state), 0);
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mempool_init (&unw.labeled_state_pool,
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sizeof (struct ia64_labeled_state), 0);
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unw.r0 = 0;
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unw.f0.raw.bits[0] = 0;
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unw.f0.raw.bits[1] = 0;
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lep = (uint8_t *) &unw.f1_le + 16;
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bep = (uint8_t *) &unw.f1_be;
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for (i = 0; i < 16; ++i)
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{
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*--lep = f1_bytes[i];
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*bep++ = f1_bytes[i];
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}
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lep = (uint8_t *) &unw.nat_val_le + 16;
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bep = (uint8_t *) &unw.nat_val_be;
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for (i = 0; i < 16; ++i)
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{
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*--lep = nat_val_bytes[i];
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*bep++ = nat_val_bytes[i];
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}
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lep = (uint8_t *) &unw.int_val_le + 16;
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bep = (uint8_t *) &unw.int_val_be;
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for (i = 0; i < 16; ++i)
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{
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*--lep = int_val_bytes[i];
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*bep++ = int_val_bytes[i];
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}
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if (8*sizeof(unw_hash_index_t) < IA64_LOG_UNW_HASH_SIZE)
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unw_hash_index_t_is_too_narrow ();
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#ifndef UNW_REMOTE_ONLY
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_Uia64_local_addr_space_init ();
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# ifndef UNW_GENERIC_ONLY
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{
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extern void _ULia64_local_addr_space_init (void);
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_ULia64_local_addr_space_init ();
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}
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# endif
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#endif
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unw.needs_initialization = 0; /* signal that we're initialized... */
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}
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out:
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mutex_unlock (&unw.lock);
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sigprocmask (SIG_SETMASK, &saved_sigmask, NULL);
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}
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