2021-11-21 23:59:44 +00:00
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// Copyright (c) Meta Platforms, Inc. and affiliates.
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2022-11-02 00:05:16 +00:00
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// SPDX-License-Identifier: LGPL-2.1-or-later
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2019-07-25 08:47:13 +01:00
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2021-11-10 23:09:29 +00:00
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#include <elf.h>
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2020-09-24 00:02:02 +01:00
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#include <stdlib.h>
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2019-07-25 08:47:13 +01:00
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#include <string.h>
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2021-08-19 22:12:44 +01:00
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#include "drgn.h"
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2019-07-25 08:47:13 +01:00
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#include "symbol.h"
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2020-09-24 00:02:02 +01:00
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#include "util.h"
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2019-07-25 08:47:13 +01:00
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LIBDRGN_PUBLIC void drgn_symbol_destroy(struct drgn_symbol *sym)
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{
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free(sym);
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}
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2021-08-02 21:34:30 +01:00
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LIBDRGN_PUBLIC void drgn_symbols_destroy(struct drgn_symbol **syms,
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size_t count)
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{
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for (size_t i = 0; i < count; i++)
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drgn_symbol_destroy(syms[i]);
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free(syms);
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}
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2021-08-19 22:12:44 +01:00
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void drgn_symbol_from_elf(const char *name, uint64_t address,
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const GElf_Sym *elf_sym, struct drgn_symbol *ret)
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{
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ret->name = name;
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ret->address = address;
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ret->size = elf_sym->st_size;
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int binding = GELF_ST_BIND(elf_sym->st_info);
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if (binding <= STB_WEAK || binding == STB_GNU_UNIQUE)
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ret->binding = binding + 1;
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else
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ret->binding = DRGN_SYMBOL_BINDING_UNKNOWN;
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int type = GELF_ST_TYPE(elf_sym->st_info);
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if (type <= STT_TLS || type == STT_GNU_IFUNC)
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ret->kind = type;
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else
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ret->kind = DRGN_SYMBOL_KIND_UNKNOWN;
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}
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2019-07-25 08:47:13 +01:00
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LIBDRGN_PUBLIC const char *drgn_symbol_name(struct drgn_symbol *sym)
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{
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return sym->name;
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}
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LIBDRGN_PUBLIC uint64_t drgn_symbol_address(struct drgn_symbol *sym)
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{
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return sym->address;
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}
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LIBDRGN_PUBLIC uint64_t drgn_symbol_size(struct drgn_symbol *sym)
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{
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return sym->size;
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}
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2021-08-19 22:12:44 +01:00
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LIBDRGN_PUBLIC enum drgn_symbol_binding
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drgn_symbol_binding(struct drgn_symbol *sym)
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{
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return sym->binding;
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}
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LIBDRGN_PUBLIC enum drgn_symbol_kind drgn_symbol_kind(struct drgn_symbol *sym)
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{
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return sym->kind;
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}
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2019-07-25 08:47:13 +01:00
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LIBDRGN_PUBLIC bool drgn_symbol_eq(struct drgn_symbol *a, struct drgn_symbol *b)
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{
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return (strcmp(a->name, b->name) == 0 && a->address == b->address &&
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2021-08-19 22:12:44 +01:00
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a->size == b->size && a->binding == b->binding &&
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a->kind == b->kind);
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2019-07-25 08:47:13 +01:00
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}
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