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https://github.com/openharmony/third_party_elfutils.git
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unknown
101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
/* Common interface for libebl modules.
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Copyright (C) 2000, 2001, 2002, 2003, 2005, 2013, 2014 Red Hat, Inc.
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Copyright (C) 2023 Mark J. Wielaard <mark@klomp.org>
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This file is part of elfutils.
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This file is free software; you can redistribute it and/or modify
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it under the terms of either
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at
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your option) any later version
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at
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your option) any later version
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or both in parallel, as here.
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elfutils is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see <http://www.gnu.org/licenses/>. */
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#ifndef _LIBEBL_CPU_H
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#define _LIBEBL_CPU_H 1
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#include <dwarf.h>
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#include <libeblP.h>
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#define EBLHOOK(name) EBLHOOK_1(BACKEND, name)
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#define EBLHOOK_1(a, b) EBLHOOK_2(a, b)
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#define EBLHOOK_2(a, b) a##b
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/* Constructor. */
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extern Ebl *EBLHOOK(init) (Elf *elf, GElf_Half machine, Ebl *eh);
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#include "ebl-hooks.h"
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#define HOOK(eh, name) eh->name = EBLHOOK(name)
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extern bool (*generic_debugscn_p) (const char *) attribute_hidden;
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/* Helper for retval. Return dwarf_tag (die), but calls return -1
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if there where previous errors that leave die NULL. */
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#define DWARF_TAG_OR_RETURN(die) \
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({ Dwarf_Die *_die = (die); \
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if (_die == NULL) return -1; \
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dwarf_tag (_die); })
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/* Get a type die corresponding to DIE. Peel CV qualifiers off
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it. Returns zero if the DIE doesn't have a type, or the type
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is DW_TAG_unspecified_type. Returns -1 on error. Otherwise
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returns the result tag DW_AT value. */
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static inline int
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dwarf_peeled_die_type (Dwarf_Die *die, Dwarf_Die *result)
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{
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Dwarf_Attribute attr_mem;
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Dwarf_Attribute *attr = dwarf_attr_integrate (die, DW_AT_type, &attr_mem);
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if (attr == NULL)
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/* The function has no return value, like a `void' function in C. */
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return 0;
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if (result == NULL)
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return -1;
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if (dwarf_formref_die (attr, result) == NULL)
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return -1;
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if (dwarf_peel_type (result, result) != 0)
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return -1;
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int tag = dwarf_tag (result);
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if (tag == DW_TAG_unspecified_type)
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return 0; /* Treat an unspecified type as if there was no type. */
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return tag;
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}
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static inline bool
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dwarf_is_pointer (int tag)
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{
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return tag == DW_TAG_pointer_type
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|| tag == DW_TAG_ptr_to_member_type
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|| tag == DW_TAG_reference_type
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|| tag == DW_TAG_rvalue_reference_type;
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}
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#define CASE_POINTER \
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case DW_TAG_pointer_type: \
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case DW_TAG_ptr_to_member_type: \
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case DW_TAG_reference_type: \
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case DW_TAG_rvalue_reference_type
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#endif /* libebl_CPU.h */
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