drgn/libdrgn/symbol.c
Omar Sandoval c0d8709b45 Update copyright headers to Meta
Signed-off-by: Omar Sandoval <osandov@osandov.com>
2021-11-21 15:59:44 -08:00

68 lines
1.5 KiB
C

// Copyright (c) Meta Platforms, Inc. and affiliates.
// SPDX-License-Identifier: GPL-3.0-or-later
#include <elf.h>
#include <stdlib.h>
#include <string.h>
#include "drgn.h"
#include "symbol.h"
#include "util.h"
LIBDRGN_PUBLIC void drgn_symbol_destroy(struct drgn_symbol *sym)
{
free(sym);
}
void drgn_symbol_from_elf(const char *name, uint64_t address,
const GElf_Sym *elf_sym, struct drgn_symbol *ret)
{
ret->name = name;
ret->address = address;
ret->size = elf_sym->st_size;
int binding = GELF_ST_BIND(elf_sym->st_info);
if (binding <= STB_WEAK || binding == STB_GNU_UNIQUE)
ret->binding = binding + 1;
else
ret->binding = DRGN_SYMBOL_BINDING_UNKNOWN;
int type = GELF_ST_TYPE(elf_sym->st_info);
if (type <= STT_TLS || type == STT_GNU_IFUNC)
ret->kind = type;
else
ret->kind = DRGN_SYMBOL_KIND_UNKNOWN;
}
LIBDRGN_PUBLIC const char *drgn_symbol_name(struct drgn_symbol *sym)
{
return sym->name;
}
LIBDRGN_PUBLIC uint64_t drgn_symbol_address(struct drgn_symbol *sym)
{
return sym->address;
}
LIBDRGN_PUBLIC uint64_t drgn_symbol_size(struct drgn_symbol *sym)
{
return sym->size;
}
LIBDRGN_PUBLIC enum drgn_symbol_binding
drgn_symbol_binding(struct drgn_symbol *sym)
{
return sym->binding;
}
LIBDRGN_PUBLIC enum drgn_symbol_kind drgn_symbol_kind(struct drgn_symbol *sym)
{
return sym->kind;
}
LIBDRGN_PUBLIC bool drgn_symbol_eq(struct drgn_symbol *a, struct drgn_symbol *b)
{
return (strcmp(a->name, b->name) == 0 && a->address == b->address &&
a->size == b->size && a->binding == b->binding &&
a->kind == b->kind);
}