mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-11-18 22:07:38 +01:00
101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
|
/* libunwind - a platform-independent unwind library
|
||
|
|
Copyright (C) 2006-2007 IBM
|
||
|
|
Contributed by
|
||
|
|
Corey Ashford <cjashfor@us.ibm.com>
|
||
|
|
Jose Flavio Aguilar Paulino <jflavio@br.ibm.com> <joseflavio@gmail.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 "unwind_i.h"
|
||
|
|
|
||
|
|
HIDDEN int
|
||
|
|
tdep_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
|
||
|
|
int write)
|
||
|
|
{
|
||
|
|
struct dwarf_loc loc;
|
||
|
|
|
||
|
|
switch (reg)
|
||
|
|
{
|
||
|
|
case UNW_TDEP_IP:
|
||
|
|
if (write)
|
||
|
|
{
|
||
|
|
c->dwarf.ip = *valp; /* update the IP cache */
|
||
|
|
if (c->dwarf.pi_valid && (*valp < c->dwarf.pi.start_ip
|
||
|
|
|| *valp >= c->dwarf.pi.end_ip))
|
||
|
|
c->dwarf.pi_valid = 0; /* new IP outside of current proc */
|
||
|
|
}
|
||
|
|
else
|
||
|
|
*valp = c->dwarf.ip;
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
case UNW_TDEP_SP:
|
||
|
|
if (write)
|
||
|
|
return -UNW_EREADONLYREG;
|
||
|
|
*valp = c->dwarf.cfa;
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* make sure it's not an FP or VR register */
|
||
|
|
if ((((unsigned) (reg - UNW_PPC64_F0)) <= 31) ||
|
||
|
|
(((unsigned) (reg - UNW_PPC64_V0)) <= 31))
|
||
|
|
return -UNW_EBADREG;
|
||
|
|
|
||
|
|
loc = c->dwarf.loc[reg];
|
||
|
|
|
||
|
|
if (write)
|
||
|
|
return dwarf_put (&c->dwarf, loc, *valp);
|
||
|
|
else
|
||
|
|
return dwarf_get (&c->dwarf, loc, valp);
|
||
|
|
}
|
||
|
|
|
||
|
|
HIDDEN int
|
||
|
|
tdep_access_fpreg (struct cursor *c, unw_regnum_t reg, unw_fpreg_t *valp,
|
||
|
|
int write)
|
||
|
|
{
|
||
|
|
struct dwarf_loc loc;
|
||
|
|
|
||
|
|
if ((unsigned) (reg - UNW_PPC64_F0) < 32)
|
||
|
|
{
|
||
|
|
loc = c->dwarf.loc[reg];
|
||
|
|
if (write)
|
||
|
|
return dwarf_putfp (&c->dwarf, loc, *valp);
|
||
|
|
else
|
||
|
|
return dwarf_getfp (&c->dwarf, loc, valp);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
if ((unsigned) (reg - UNW_PPC64_V0) < 32)
|
||
|
|
{
|
||
|
|
loc = c->dwarf.loc[reg];
|
||
|
|
if (write)
|
||
|
|
return dwarf_putvr (&c->dwarf, loc, *valp);
|
||
|
|
else
|
||
|
|
return dwarf_getvr (&c->dwarf, loc, valp);
|
||
|
|
}
|
||
|
|
|
||
|
|
return -UNW_EBADREG;
|
||
|
|
}
|
||
|
|
|