74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/*
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SPDX-License-Identifier: GPL-2.0-only
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Copyright (C) 2019 Facebook
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*/
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#ifndef _LIBBTF_H
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#define _LIBBTF_H
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#include "gobuffer.h"
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#include <stdbool.h>
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#include <stdint.h>
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#include "lib/bpf/src/btf.h"
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struct btf_elf {
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void *priv;
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Elf *elf;
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GElf_Ehdr ehdr;
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struct elf_symtab *symtab;
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struct gobuffer percpu_secinfo;
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char *filename;
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int in_fd;
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uint8_t wordsize;
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bool is_big_endian;
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bool raw_btf; // "/sys/kernel/btf/vmlinux"
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uint32_t percpu_shndx;
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uint64_t percpu_base_addr;
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uint64_t percpu_sec_sz;
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struct btf *btf;
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struct btf *base_btf;
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};
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extern struct btf *base_btf;
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extern uint8_t btf_elf__verbose;
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extern uint8_t btf_elf__force;
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#define btf_elf__verbose_log(fmt, ...) { if (btf_elf__verbose) printf(fmt, __VA_ARGS__); }
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extern bool btf_gen_floats;
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#define PERCPU_SECTION ".data..percpu"
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struct cu;
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struct base_type;
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struct ftype;
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struct btf_elf *btf_elf__new(const char *filename, Elf *elf, struct btf *base_btf);
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void btf_elf__delete(struct btf_elf *btf);
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int32_t btf_elf__add_base_type(struct btf_elf *btf, const struct base_type *bt,
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const char *name);
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int32_t btf_elf__add_ref_type(struct btf_elf *btf, uint16_t kind, uint32_t type,
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const char *name, bool kind_flag);
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int btf_elf__add_member(struct btf_elf *btf, const char *name, uint32_t type,
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uint32_t bitfield_size, uint32_t bit_offset);
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int32_t btf_elf__add_struct(struct btf_elf *btf, uint8_t kind, const char *name, uint32_t size);
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int32_t btf_elf__add_array(struct btf_elf *btf, uint32_t type, uint32_t index_type,
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uint32_t nelems);
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int32_t btf_elf__add_enum(struct btf_elf *btf, const char *name, uint32_t size);
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int btf_elf__add_enum_val(struct btf_elf *btf, const char *name, int32_t value);
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int32_t btf_elf__add_func_proto(struct btf_elf *btf, struct cu *cu, struct ftype *ftype,
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uint32_t type_id_off);
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int32_t btf_elf__add_var_type(struct btf_elf *btfe, uint32_t type, const char *name,
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uint32_t linkage);
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int32_t btf_elf__add_var_secinfo(struct gobuffer *buf, uint32_t type,
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uint32_t offset, uint32_t size);
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int32_t btf_elf__add_datasec_type(struct btf_elf *btfe, const char *section_name,
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struct gobuffer *var_secinfo_buf);
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int btf_elf__encode(struct btf_elf *btf, uint8_t flags);
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const char *btf_elf__string(struct btf_elf *btf, uint32_t ref);
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int btf_elf__load(struct btf_elf *btf);
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#endif /* _LIBBTF_H */
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