mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-11-05 01:09:27 +01:00
0f9937485e
Usually we don't have a valid location for the SP but we keep calculating the value of the CFA. The ARM backend should return this value instead. Signed-off-by: Ken Werner <ken.werner@linaro.org>
81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
/* libunwind - a platform-independent unwind library
|
|
Copyright (C) 2008 CodeSourcery
|
|
|
|
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)
|
|
{
|
|
dwarf_loc_t loc = DWARF_NULL_LOC;
|
|
|
|
switch (reg)
|
|
{
|
|
case UNW_ARM_R0:
|
|
case UNW_ARM_R1:
|
|
case UNW_ARM_R2:
|
|
case UNW_ARM_R3:
|
|
case UNW_ARM_R4:
|
|
case UNW_ARM_R5:
|
|
case UNW_ARM_R6:
|
|
case UNW_ARM_R7:
|
|
case UNW_ARM_R8:
|
|
case UNW_ARM_R9:
|
|
case UNW_ARM_R10:
|
|
case UNW_ARM_R11:
|
|
case UNW_ARM_R12:
|
|
case UNW_ARM_R14:
|
|
case UNW_ARM_R15:
|
|
loc = c->dwarf.loc[reg - UNW_ARM_R0];
|
|
break;
|
|
|
|
case UNW_ARM_R13:
|
|
case UNW_ARM_CFA:
|
|
if (write)
|
|
return -UNW_EREADONLYREG;
|
|
*valp = c->dwarf.cfa;
|
|
return 0;
|
|
|
|
/* FIXME: Initialise coprocessor & shadow registers? */
|
|
|
|
default:
|
|
Debug (1, "bad register number %u\n", reg);
|
|
return -UNW_EBADREG;
|
|
}
|
|
|
|
if (write)
|
|
return dwarf_put (&c->dwarf, loc, *valp);
|
|
else
|
|
return dwarf_get (&c->dwarf, loc, valp);
|
|
}
|
|
|
|
/* FIXME for ARM. */
|
|
|
|
HIDDEN int
|
|
tdep_access_fpreg (struct cursor *c, unw_regnum_t reg, unw_fpreg_t *valp,
|
|
int write)
|
|
{
|
|
Debug (1, "bad register number %u\n", reg);
|
|
return -UNW_EBADREG;
|
|
}
|