mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-05-17 02:35:17 +02:00
da0b1a146f
This patch adds support for the powerpc64le-linux platform. It consists of two main features: - Support little-endian byte order This is done via a "big_endian" member of struct unw_addr_space, which is evaluated by common code via the dwarf_is_big_endian macro, and also in endian-aware code in unw_is_signal_frame. - Support the ELFv2 ABI This is done via an "abi" member of struct unw_addr_space. This is currently only needed in tdep_get_func_addr, since the ELFv2 ABI does not use function descriptors. Both new members are initialized in unw_create_addr_space and ppc64_local_addr_space_init, following the mips precedent. Since ppc32 and ppc64 now no longer share the unw_create_addr_space implementation, the file is duplicated from the ppc directory into ppc32/ppc64. Tested on powerpc64-linux and powerpc64le-linux. Support on LE seems to be as good as existing BE support; I have not attempted to fix the existing shortcomings of PPC support that already cause a number to tests to fail due to unimplemented features. Signed-off-by: Ulrich Weigand <uweigand@de.ibm.com>
72 lines
2.1 KiB
C
72 lines
2.1 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 <stdlib.h>
|
|
|
|
#include <libunwind_i.h>
|
|
|
|
PROTECTED unw_addr_space_t
|
|
unw_create_addr_space (unw_accessors_t *a, int byte_order)
|
|
{
|
|
#ifdef UNW_LOCAL_ONLY
|
|
return NULL;
|
|
#else
|
|
unw_addr_space_t as;
|
|
|
|
/*
|
|
* We support both big- and little-endian on Linux ppc64.
|
|
*/
|
|
if (byte_order != 0
|
|
&& byte_order != __LITTLE_ENDIAN
|
|
&& byte_order != __BIG_ENDIAN)
|
|
return NULL;
|
|
|
|
as = malloc (sizeof (*as));
|
|
if (!as)
|
|
return NULL;
|
|
|
|
memset (as, 0, sizeof (*as));
|
|
|
|
as->acc = *a;
|
|
|
|
if (byte_order == 0)
|
|
/* use host default: */
|
|
as->big_endian = (__BYTE_ORDER == __BIG_ENDIAN);
|
|
else
|
|
as->big_endian = (byte_order == __BIG_ENDIAN);
|
|
|
|
/* FIXME! There is no way to specify the ABI.
|
|
Default to ELFv1 on big-endian and ELFv2 on little-endian. */
|
|
if (as->big_endian)
|
|
as->abi = UNW_PPC64_ABI_ELFv1;
|
|
else
|
|
as->abi = UNW_PPC64_ABI_ELFv2;
|
|
|
|
return as;
|
|
#endif
|
|
}
|