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(unw_get_save_loc): Use ia64_get_stacked() and don't forget to rotate stacked

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registers before accessing them.

(Logical change 1.40)
This commit is contained in:
mostang.com!davidm 2003-01-21 17:41:20 +00:00
parent 29fbe1c0bc
commit 3f3215952d
1 changed files with 37 additions and 11 deletions
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48
src/ia64/Gget_save_loc-ia64.c
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@ -1,3 +1,28 @@
/* libunwind - a platform-independent unwind library
Copyright (C) 2002-2003 Hewlett-Packard Co
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 <assert.h>
#include "offsets.h"
@ -8,7 +33,8 @@ int
unw_get_save_loc (unw_cursor_t *cursor, int reg, unw_save_loc_t *sloc)
{
struct cursor *c = (struct cursor *) cursor;
unw_word_t loc, reg_loc, nat_loc;
unw_word_t loc, reg_loc;
int ret;
loc = 0; /* default to "not saved" */
@ -54,9 +80,10 @@ unw_get_save_loc (unw_cursor_t *cursor, int reg, unw_save_loc_t *sloc)
}
else if (reg >= 32)
{
loc = ia64_rse_rnat_addr (reg_loc); /* XXX looks wrong */
if (nat_loc >= c->rbs_top)
nat_loc = c->top_rnat_loc;
reg = rotate_gr (c, reg - 32);
ret = ia64_get_stacked (c, reg, NULL, &loc);
if (ret < 0)
return ret;
}
else if (c->sigcontext_loc)
{
@ -83,16 +110,15 @@ unw_get_save_loc (unw_cursor_t *cursor, int reg, unw_save_loc_t *sloc)
break;
case UNW_IA64_GR + 32 ... UNW_IA64_GR + 127: /* stacked reg */
reg = rotate_gr (c, reg - UNW_IA64_GR) + UNW_IA64_GR;
loc = ia64_rse_skip_regs (c->bsp, reg - (UNW_IA64_GR + 32));
reg = rotate_gr (c, reg - UNW_IA64_GR);
ret = ia64_get_stacked (c, reg, &loc, NULL);
if (ret < 0)
return ret;
break;
case UNW_IA64_NAT + 32 ... UNW_IA64_NAT + 127: /* stacked reg */
reg = rotate_gr (c, reg - UNW_IA64_NAT) + UNW_IA64_NAT;
loc = ia64_rse_skip_regs (c->bsp, reg - (UNW_IA64_NAT + 32));
loc = ia64_rse_rnat_addr (loc);
if (loc > c->rbs_top)
loc = c->top_rnat_loc;
reg = rotate_gr (c, reg - UNW_IA64_NAT);
ret = ia64_get_stacked (c, reg, NULL, &loc);
break;
case UNW_IA64_AR_EC: