2004-08-19 15:39:10 +02:00
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/* libunwind - a platform-independent unwind library
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Copyright (C) 2004 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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Modified for x86_64 by Max Asbock <masbock@us.ibm.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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PROTECTED int
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unw_get_save_loc (unw_cursor_t *cursor, int reg, unw_save_loc_t *sloc)
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{
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struct cursor *c = (struct cursor *) cursor;
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dwarf_loc_t loc;
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loc = DWARF_NULL_LOC; /* default to "not saved" */
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switch (reg)
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{
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case UNW_X86_64_RBX: loc = c->dwarf.loc[RBX]; break;
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case UNW_X86_64_RSP: loc = c->dwarf.loc[RSP]; break;
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case UNW_X86_64_RBP: loc = c->dwarf.loc[RBP]; break;
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case UNW_X86_64_R12: loc = c->dwarf.loc[R12]; break;
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case UNW_X86_64_R13: loc = c->dwarf.loc[R13]; break;
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case UNW_X86_64_R14: loc = c->dwarf.loc[R14]; break;
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case UNW_X86_64_R15: loc = c->dwarf.loc[R15]; break;
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default:
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break;
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}
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memset (sloc, 0, sizeof (sloc));
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if (DWARF_IS_NULL_LOC (loc))
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{
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sloc->type = UNW_SLT_NONE;
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return 0;
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}
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#if !defined(UNW_LOCAL_ONLY)
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if (DWARF_IS_REG_LOC (loc))
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{
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sloc->type = UNW_SLT_REG;
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sloc->u.regnum = DWARF_GET_LOC (loc);
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}
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else
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#endif
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{
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sloc->type = UNW_SLT_MEMORY;
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sloc->u.addr = DWARF_GET_LOC (loc);
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}
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return 0;
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}
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