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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>
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2006-2007 IBM
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Contributed by
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Corey Ashford <cjashfor@us.ibm.com>
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Jose Flavio Aguilar Paulino <jflavio@br.ibm.com> <joseflavio@gmail.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 <stdlib.h>
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#include <libunwind_i.h>
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PROTECTED unw_addr_space_t
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unw_create_addr_space (unw_accessors_t *a, int byte_order)
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{
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#ifdef UNW_LOCAL_ONLY
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return NULL;
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#else
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unw_addr_space_t as;
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/*
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* We support both big- and little-endian on Linux ppc64.
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*/
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if (byte_order != 0
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&& byte_order != __LITTLE_ENDIAN
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&& byte_order != __BIG_ENDIAN)
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return NULL;
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as = malloc (sizeof (*as));
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if (!as)
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return NULL;
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memset (as, 0, sizeof (*as));
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as->acc = *a;
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if (byte_order == 0)
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/* use host default: */
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as->big_endian = (__BYTE_ORDER == __BIG_ENDIAN);
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else
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as->big_endian = (byte_order == __BIG_ENDIAN);
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/* FIXME! There is no way to specify the ABI.
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Default to ELFv1 on big-endian and ELFv2 on little-endian. */
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if (as->big_endian)
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as->abi = UNW_PPC64_ABI_ELFv1;
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else
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as->abi = UNW_PPC64_ABI_ELFv2;
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return as;
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#endif
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}
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