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https://github.com/tobast/libunwind-eh_elf.git
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(_U_dyn_info_list): Move declaration to here from src/dyn-local.c.
(unwind-table entry for _U_dyn_info_list): Ditto (it's ia64-specific, so it can't be in src/dyn-local.c). (Logical change 1.31)
This commit is contained in:
mostang.com!davidm
parent
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commit
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1 changed files with 380 additions and 0 deletions
380
src/ia64/Ginit.c
380
src/ia64/Ginit.c
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/* libunwind - a platform-independent unwind library
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Copyright (C) 2001-2002 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 <endian.h>
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#include <stdlib.h>
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#include "rse.h"
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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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first_time: 1,
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save_order: {
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IA64_REG_RP, 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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preg_index: {
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struct_offset (struct ia64_cursor, pri_unat_loc)/8, /* PRI_UNAT_GR */
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struct_offset (struct ia64_cursor, pri_unat_loc)/8, /* PRI_UNAT_MEM */
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struct_offset (struct ia64_cursor, bsp_loc)/8,
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struct_offset (struct ia64_cursor, bspstore_loc)/8,
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struct_offset (struct ia64_cursor, pfs_loc)/8,
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struct_offset (struct ia64_cursor, rnat_loc)/8,
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struct_offset (struct ia64_cursor, psp)/8,
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struct_offset (struct ia64_cursor, ip_loc)/8,
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struct_offset (struct ia64_cursor, r4_loc)/8,
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struct_offset (struct ia64_cursor, r5_loc)/8,
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struct_offset (struct ia64_cursor, r6_loc)/8,
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struct_offset (struct ia64_cursor, r7_loc)/8,
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struct_offset (struct ia64_cursor, nat4_loc)/8,
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struct_offset (struct ia64_cursor, nat5_loc)/8,
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struct_offset (struct ia64_cursor, nat6_loc)/8,
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struct_offset (struct ia64_cursor, nat7_loc)/8,
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struct_offset (struct ia64_cursor, unat_loc)/8,
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struct_offset (struct ia64_cursor, pr_loc)/8,
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struct_offset (struct ia64_cursor, lc_loc)/8,
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struct_offset (struct ia64_cursor, fpsr_loc)/8,
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struct_offset (struct ia64_cursor, b1_loc)/8,
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struct_offset (struct ia64_cursor, b2_loc)/8,
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struct_offset (struct ia64_cursor, b3_loc)/8,
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struct_offset (struct ia64_cursor, b4_loc)/8,
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struct_offset (struct ia64_cursor, b5_loc)/8,
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struct_offset (struct ia64_cursor, f2_loc)/8,
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struct_offset (struct ia64_cursor, f3_loc)/8,
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struct_offset (struct ia64_cursor, f4_loc)/8,
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struct_offset (struct ia64_cursor, f5_loc)/8,
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struct_offset (struct ia64_cursor, fr_loc[16 - 16])/8,
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struct_offset (struct ia64_cursor, fr_loc[17 - 16])/8,
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struct_offset (struct ia64_cursor, fr_loc[18 - 16])/8,
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struct_offset (struct ia64_cursor, fr_loc[19 - 16])/8,
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struct_offset (struct ia64_cursor, fr_loc[20 - 16])/8,
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struct_offset (struct ia64_cursor, fr_loc[21 - 16])/8,
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struct_offset (struct ia64_cursor, fr_loc[22 - 16])/8,
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struct_offset (struct ia64_cursor, fr_loc[23 - 16])/8,
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struct_offset (struct ia64_cursor, fr_loc[24 - 16])/8,
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struct_offset (struct ia64_cursor, fr_loc[25 - 16])/8,
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struct_offset (struct ia64_cursor, fr_loc[26 - 16])/8,
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struct_offset (struct ia64_cursor, fr_loc[27 - 16])/8,
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struct_offset (struct ia64_cursor, fr_loc[28 - 16])/8,
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struct_offset (struct ia64_cursor, fr_loc[29 - 16])/8,
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struct_offset (struct ia64_cursor, fr_loc[30 - 16])/8,
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struct_offset (struct ia64_cursor, fr_loc[31 - 16])/8,
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},
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#if IA64_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", "bsp", "bspstore", "ar.pfs", "ar.rnat",
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"psp", "rp",
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"r4", "r5", "r6", "r7",
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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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#ifdef UNW_REMOTE_ONLY
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/* unw_local_addr_space is a NULL pointer in this case. */
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unw_addr_space_t unw_local_addr_space;
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#else
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static struct unw_addr_space local_addr_space;
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unw_addr_space_t unw_local_addr_space = &local_addr_space;
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static inline void *
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uc_addr (ucontext_t *uc, int reg)
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{
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void *addr;
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switch (reg)
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{
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case UNW_IA64_IP: addr = &uc->uc_mcontext.sc_br[0]; break;
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case UNW_IA64_CFM: addr = &uc->uc_mcontext.sc_ar_pfs; break;
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case UNW_IA64_AR_RNAT: addr = &uc->uc_mcontext.sc_ar_rnat; break;
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case UNW_IA64_AR_UNAT: addr = &uc->uc_mcontext.sc_ar_unat; break;
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case UNW_IA64_AR_LC: addr = &uc->uc_mcontext.sc_ar_lc; break;
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case UNW_IA64_AR_FPSR: addr = &uc->uc_mcontext.sc_ar_fpsr; break;
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case UNW_IA64_PR: addr = &uc->uc_mcontext.sc_pr; break;
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case UNW_IA64_AR_BSP: addr = &uc->uc_mcontext.sc_rbs_base; break;
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case UNW_IA64_AR_BSPSTORE: addr = &uc->uc_mcontext.sc_rbs_base; break;
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case UNW_IA64_GR + 4 ... UNW_IA64_GR + 7:
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case UNW_IA64_GR + 12:
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addr = &uc->uc_mcontext.sc_gr[reg - UNW_IA64_GR];
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break;
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case UNW_IA64_BR + 1 ... UNW_IA64_BR + 5:
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addr = &uc->uc_mcontext.sc_br[reg - UNW_IA64_BR];
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break;
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case UNW_IA64_FR+ 2 ... UNW_IA64_FR+ 5:
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case UNW_IA64_FR+16 ... UNW_IA64_FR+31:
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addr = &uc->uc_mcontext.sc_fr[reg - UNW_IA64_FR];
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break;
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default:
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addr = NULL;
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}
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return addr;
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}
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# ifdef UNW_LOCAL_ONLY
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void *
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_Uia64_uc_addr (ucontext_t *uc, int reg)
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{
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return uc_addr (uc, reg);
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}
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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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unw_dyn_info_list_t _U_dyn_info_list;
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/* Now create a special unwind-table entry which makes it easy for an
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unwinder to locate the dynamic registration list. The special
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entry covers address range [0-0) and is therefore guaranteed to
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be the first in the unwind-table. */
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asm (
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" .section \".IA_64.unwind_info\", \"a\"\n"
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".info: data8 (1<<48) | 1\n" /* v1, length==1 (8-byte word) */
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" data8 0\n" /* 8 empty .prologue directives (nops) */
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" data8 0\n" /* personality routine (ignored) */
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" string \"dyn-list\"\n" /* lsda */
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" data8 @segrel(_U_dyn_info_list)\n"
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" .previous\n"
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" .section \".IA_64.unwind\", \"a\"\n"
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" data8 0, 0, @segrel(.info)\n"
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" .previous\n");
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# endif /* UNW_LOCAL_ONLY */
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static void
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put_unwind_info (unw_addr_space_t as, unw_proc_info_t *proc_info, void *arg)
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{
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/* it's a no-op */
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}
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static int
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get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr,
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void *arg)
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{
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*dyn_info_list_addr = (unw_word_t) &_U_dyn_info_list;
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return 0;
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}
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static int
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access_mem (unw_addr_space_t as, unw_word_t addr, unw_word_t *val, int write,
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void *arg)
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{
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if (write)
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{
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debug (100, "%s: mem[%lx] <- %lx\n", __FUNCTION__, addr, *val);
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*(unw_word_t *) addr = *val;
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}
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else
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{
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*val = *(unw_word_t *) addr;
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debug (100, "%s: mem[%lx] -> %lx\n", __FUNCTION__, addr, *val);
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}
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return 0;
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}
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static int
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access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val, int write,
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void *arg)
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{
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unw_word_t *addr, mask;
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ucontext_t *uc = arg;
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if (reg >= UNW_IA64_FR && reg < UNW_IA64_FR + 128)
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goto badreg;
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if (reg >= UNW_IA64_NAT + 4 && reg <= UNW_IA64_NAT + 7)
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{
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mask = ((unw_word_t) 1) << (reg - UNW_IA64_NAT);
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if (write)
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{
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if (*val)
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uc->uc_mcontext.sc_nat |= mask;
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else
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uc->uc_mcontext.sc_nat &= ~mask;
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}
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else
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*val = (uc->uc_mcontext.sc_nat & mask) != 0;
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if (write)
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debug (100, "%s: %s <- %lx\n", __FUNCTION__, unw_regname (reg), *val);
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else
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debug (100, "%s: %s -> %lx\n", __FUNCTION__, unw_regname (reg), *val);
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return 0;
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}
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addr = uc_addr (uc, reg);
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if (!addr)
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goto badreg;
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if (write)
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{
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*(unw_word_t *) addr = *val;
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debug (100, "%s: %s <- %lx\n", __FUNCTION__, unw_regname (reg), *val);
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}
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else
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{
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*val = *(unw_word_t *) addr;
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debug (100, "%s: %s -> %lx\n", __FUNCTION__, unw_regname (reg), *val);
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}
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return 0;
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badreg:
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debug (1, "%s: bad register number %u\n", __FUNCTION__, reg);
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return -UNW_EBADREG;
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}
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static int
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access_fpreg (unw_addr_space_t as, unw_regnum_t reg, unw_fpreg_t *val,
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int write, void *arg)
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{
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ucontext_t *uc = arg;
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unw_fpreg_t *addr;
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if (reg < UNW_IA64_FR || reg >= UNW_IA64_FR + 128)
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goto badreg;
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addr = uc_addr (uc, reg);
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if (!addr)
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goto badreg;
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if (write)
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{
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debug (100, "%s: %s <- %016lx.%016lx\n", __FUNCTION__,
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unw_regname (reg), val->raw.bits[1], val->raw.bits[0]);
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*(unw_fpreg_t *) addr = *val;
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}
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else
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{
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*val = *(unw_fpreg_t *) addr;
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debug (100, "%s: %s -> %016lx.%016lx\n", __FUNCTION__,
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unw_regname (reg), val->raw.bits[1], val->raw.bits[0]);
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}
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return 0;
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badreg:
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debug (1, "%s: bad register number %u\n", __FUNCTION__, reg);
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/* attempt to access a non-preserved register */
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return -UNW_EBADREG;
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}
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#endif /* !UNW_REMOTE_ONLY */
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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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extern void unw_cursor_t_is_too_small (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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uint8_t *lep, *bep;
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long i;
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#if IA64_UNW_DEBUG
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{
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const char *str = getenv ("UNW_DEBUG_LEVEL");
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if (str)
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unw.debug_level = atoi (str);
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}
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#endif
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mempool_init (&unw.state_record_pool, sizeof (struct ia64_state_record), 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.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 (sizeof (struct ia64_cursor) > sizeof (unw_cursor_t))
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unw_cursor_t_is_too_small();
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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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memset (&local_addr_space, 0, sizeof (local_addr_space));
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ia64_script_cache_init (&local_addr_space.global_cache);
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local_addr_space.big_endian = (__BYTE_ORDER == __BIG_ENDIAN);
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local_addr_space.caching_policy = UNW_CACHE_GLOBAL;
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local_addr_space.acc.find_proc_info = _Uia64_find_proc_info;
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local_addr_space.acc.put_unwind_info = put_unwind_info;
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local_addr_space.acc.get_dyn_info_list_addr = get_dyn_info_list_addr;
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local_addr_space.acc.access_mem = access_mem;
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local_addr_space.acc.access_reg = access_reg;
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local_addr_space.acc.access_fpreg = access_fpreg;
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local_addr_space.acc.resume = ia64_local_resume;
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#endif
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}
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