diff options
Diffstat (limited to 'tools/lib/bpf/btf.c')
| -rw-r--r-- | tools/lib/bpf/btf.c | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c index ef1b2f573c1b..0c0f60cad769 100644 --- a/tools/lib/bpf/btf.c +++ b/tools/lib/bpf/btf.c @@ -5093,168 +5093,6 @@ struct btf *btf__load_module_btf(const char *module_name, struct btf *vmlinux_bt return btf__parse_split(path, vmlinux_btf); } -int btf_field_iter_init(struct btf_field_iter *it, struct btf_type *t, enum btf_field_iter_kind iter_kind) -{ - it->p = NULL; - it->m_idx = -1; - it->off_idx = 0; - it->vlen = 0; - - switch (iter_kind) { - case BTF_FIELD_ITER_IDS: - switch (btf_kind(t)) { - case BTF_KIND_UNKN: - case BTF_KIND_INT: - case BTF_KIND_FLOAT: - case BTF_KIND_ENUM: - case BTF_KIND_ENUM64: - it->desc = (struct btf_field_desc) {}; - break; - case BTF_KIND_FWD: - case BTF_KIND_CONST: - case BTF_KIND_VOLATILE: - case BTF_KIND_RESTRICT: - case BTF_KIND_PTR: - case BTF_KIND_TYPEDEF: - case BTF_KIND_FUNC: - case BTF_KIND_VAR: - case BTF_KIND_DECL_TAG: - case BTF_KIND_TYPE_TAG: - it->desc = (struct btf_field_desc) { 1, {offsetof(struct btf_type, type)} }; - break; - case BTF_KIND_ARRAY: - it->desc = (struct btf_field_desc) { - 2, {sizeof(struct btf_type) + offsetof(struct btf_array, type), - sizeof(struct btf_type) + offsetof(struct btf_array, index_type)} - }; - break; - case BTF_KIND_STRUCT: - case BTF_KIND_UNION: - it->desc = (struct btf_field_desc) { - 0, {}, - sizeof(struct btf_member), - 1, {offsetof(struct btf_member, type)} - }; - break; - case BTF_KIND_FUNC_PROTO: - it->desc = (struct btf_field_desc) { - 1, {offsetof(struct btf_type, type)}, - sizeof(struct btf_param), - 1, {offsetof(struct btf_param, type)} - }; - break; - case BTF_KIND_DATASEC: - it->desc = (struct btf_field_desc) { - 0, {}, - sizeof(struct btf_var_secinfo), - 1, {offsetof(struct btf_var_secinfo, type)} - }; - break; - default: - return -EINVAL; - } - break; - case BTF_FIELD_ITER_STRS: - switch (btf_kind(t)) { - case BTF_KIND_UNKN: - it->desc = (struct btf_field_desc) {}; - break; - case BTF_KIND_INT: - case BTF_KIND_FLOAT: - case BTF_KIND_FWD: - case BTF_KIND_ARRAY: - case BTF_KIND_CONST: - case BTF_KIND_VOLATILE: - case BTF_KIND_RESTRICT: - case BTF_KIND_PTR: - case BTF_KIND_TYPEDEF: - case BTF_KIND_FUNC: - case BTF_KIND_VAR: - case BTF_KIND_DECL_TAG: - case BTF_KIND_TYPE_TAG: - case BTF_KIND_DATASEC: - it->desc = (struct btf_field_desc) { - 1, {offsetof(struct btf_type, name_off)} - }; - break; - case BTF_KIND_ENUM: - it->desc = (struct btf_field_desc) { - 1, {offsetof(struct btf_type, name_off)}, - sizeof(struct btf_enum), - 1, {offsetof(struct btf_enum, name_off)} - }; - break; - case BTF_KIND_ENUM64: - it->desc = (struct btf_field_desc) { - 1, {offsetof(struct btf_type, name_off)}, - sizeof(struct btf_enum64), - 1, {offsetof(struct btf_enum64, name_off)} - }; - break; - case BTF_KIND_STRUCT: - case BTF_KIND_UNION: - it->desc = (struct btf_field_desc) { - 1, {offsetof(struct btf_type, name_off)}, - sizeof(struct btf_member), - 1, {offsetof(struct btf_member, name_off)} - }; - break; - case BTF_KIND_FUNC_PROTO: - it->desc = (struct btf_field_desc) { - 1, {offsetof(struct btf_type, name_off)}, - sizeof(struct btf_param), - 1, {offsetof(struct btf_param, name_off)} - }; - break; - default: - return -EINVAL; - } - break; - default: - return -EINVAL; - } - - if (it->desc.m_sz) - it->vlen = btf_vlen(t); - - it->p = t; - return 0; -} - -__u32 *btf_field_iter_next(struct btf_field_iter *it) -{ - if (!it->p) - return NULL; - - if (it->m_idx < 0) { - if (it->off_idx < it->desc.t_off_cnt) - return it->p + it->desc.t_offs[it->off_idx++]; - /* move to per-member iteration */ - it->m_idx = 0; - it->p += sizeof(struct btf_type); - it->off_idx = 0; - } - - /* if type doesn't have members, stop */ - if (it->desc.m_sz == 0) { - it->p = NULL; - return NULL; - } - - if (it->off_idx >= it->desc.m_off_cnt) { - /* exhausted this member's fields, go to the next member */ - it->m_idx++; - it->p += it->desc.m_sz; - it->off_idx = 0; - } - - if (it->m_idx < it->vlen) - return it->p + it->desc.m_offs[it->off_idx++]; - - it->p = NULL; - return NULL; -} - int btf_ext_visit_type_ids(struct btf_ext *btf_ext, type_id_visit_fn visit, void *ctx) { const struct btf_ext_info *seg; |