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113 lines
3.4 KiB
C
113 lines
3.4 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 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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libunwind is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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libunwind is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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As a special exception, if you link this library with other files to
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produce an executable, this library does not by itself cause the
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resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why the
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executable file might be covered by the GNU General Public
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License. */
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#include "unwind_i.h"
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static inline int
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common_init (struct ia64_cursor *c)
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{
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int i, ret;
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c->cfm_loc = IA64_REG_LOC (c, UNW_IA64_CFM);
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c->top_rnat_loc = IA64_REG_LOC (c, UNW_IA64_AR_RNAT);
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c->bsp_loc = IA64_REG_LOC (c, UNW_IA64_AR_BSP);
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c->bspstore_loc = IA64_REG_LOC (c, UNW_IA64_AR_BSPSTORE);
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c->pfs_loc = IA64_REG_LOC (c, UNW_IA64_AR_PFS);
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c->rnat_loc = IA64_REG_LOC (c, UNW_IA64_AR_RNAT);
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c->ip_loc = IA64_REG_LOC (c, UNW_IA64_IP);
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c->pri_unat_loc = 0; /* no primary UNaT location */
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c->unat_loc = IA64_REG_LOC (c, UNW_IA64_AR_UNAT);
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c->pr_loc = IA64_REG_LOC (c, UNW_IA64_PR);
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c->lc_loc = IA64_REG_LOC (c, UNW_IA64_AR_LC);
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c->fpsr_loc = IA64_REG_LOC (c, UNW_IA64_AR_FPSR);
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c->r4_loc = IA64_REG_LOC (c, UNW_IA64_GR + 4);
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c->r5_loc = IA64_REG_LOC (c, UNW_IA64_GR + 5);
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c->r6_loc = IA64_REG_LOC (c, UNW_IA64_GR + 6);
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c->r7_loc = IA64_REG_LOC (c, UNW_IA64_GR + 7);
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/* This says that each NaT bit is stored along with the
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corresponding preserved register: */
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c->nat4_loc = IA64_LOC (4, 0);
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c->nat5_loc = IA64_LOC (5, 0);
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c->nat6_loc = IA64_LOC (6, 0);
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c->nat7_loc = IA64_LOC (7, 0);
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c->b1_loc = IA64_REG_LOC (c, UNW_IA64_BR + 1);
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c->b2_loc = IA64_REG_LOC (c, UNW_IA64_BR + 2);
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c->b3_loc = IA64_REG_LOC (c, UNW_IA64_BR + 3);
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c->b4_loc = IA64_REG_LOC (c, UNW_IA64_BR + 4);
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c->b5_loc = IA64_REG_LOC (c, UNW_IA64_BR + 5);
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c->f2_loc = IA64_FPREG_LOC (c, UNW_IA64_FR + 2);
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c->f3_loc = IA64_FPREG_LOC (c, UNW_IA64_FR + 3);
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c->f4_loc = IA64_FPREG_LOC (c, UNW_IA64_FR + 4);
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c->f5_loc = IA64_FPREG_LOC (c, UNW_IA64_FR + 5);
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for (i = 16; i <= 31; ++i)
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c->fr_loc[i - 16] = IA64_FPREG_LOC (c, UNW_IA64_FR + i);
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ret = ia64_get (c, c->pr_loc, &c->pr);
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if (ret < 0)
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return ret;
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ret = ia64_get (c, c->ip_loc, &c->ip);
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if (ret < 0)
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return ret;
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ret = ia64_get (c, IA64_REG_LOC (c, UNW_IA64_GR + 12), &c->sp);
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if (ret < 0)
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return ret;
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c->psp = c->sp;
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ret = ia64_get (c, c->bsp_loc, &c->bsp);
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if (ret < 0)
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return ret;
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c->rbs_top = c->bsp;
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c->pi.flags = 0;
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#ifdef UNW_LOCAL_ONLY
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c->eh_args[0] = c->eh_args[1] = c->eh_args[2] = c->eh_args[3] = 0;
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#else
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for (i = 0; i < 4; ++i)
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{
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ret = ia64_get (c, IA64_REG_LOC (c, UNW_IA64_GR + 15 + i),
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&c->eh_args[i]);
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if (ret < 0)
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{
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if (ret == -UNW_EBADREG)
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c->eh_args[i] = 0;
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else
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return ret;
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}
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}
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#endif
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c->sigcontext_loc = 0;
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#ifdef IA64_UNW_SCRIPT_CACHE
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c->hint = 0;
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c->prev_script = 0;
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#endif
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return ia64_get_proc_info (c);
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}
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