libctf: core type lookup
Finally we get to the functions used to actually look up and enumerate properties of types in a container (names, sizes, members, what type a pointer or cv-qual references, determination of whether two types are assignment-compatible, etc). With a very few exceptions these do not work for types newly added via ctf_add_*(): they only work on types in read-only containers, or types added before the most recent call to ctf_update(). This also adds support for lookup of "variables" (string -> type ID mappings) and for generation of C type names corresponding to a type ID. libctf/ * ctf-decl.c: New file. * ctf-types.c: Likewise. * ctf-impl.h: New declarations. include/ * ctf-api.h (ctf_visit_f): New definition. (ctf_member_f): Likewise. (ctf_enum_f): Likewise. (ctf_variable_f): Likewise. (ctf_type_f): Likewise. (ctf_type_isparent): Likewise. (ctf_type_ischild): Likewise. (ctf_type_resolve): Likewise. (ctf_type_aname): Likewise. (ctf_type_lname): Likewise. (ctf_type_name): Likewise. (ctf_type_sizee): Likewise. (ctf_type_align): Likewise. (ctf_type_kind): Likewise. (ctf_type_reference): Likewise. (ctf_type_pointer): Likewise. (ctf_type_encoding): Likewise. (ctf_type_visit): Likewise. (ctf_type_cmp): Likewise. (ctf_type_compat): Likewise. (ctf_member_info): Likewise. (ctf_array_info): Likewise. (ctf_enum_name): Likewise. (ctf_enum_value): Likewise. (ctf_member_iter): Likewise. (ctf_enum_iter): Likewise. (ctf_type_iter): Likewise. (ctf_variable_iter): Likewise.
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@ -206,6 +206,13 @@ enum
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/* These typedefs are used to define the signature for callback functions
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that can be used with the iteration and visit functions below. */
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typedef int ctf_visit_f (const char *name, ctf_id_t type, unsigned long offset,
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int depth, void *arg);
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typedef int ctf_member_f (const char *name, ctf_id_t membtype,
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unsigned long offset, void *arg);
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typedef int ctf_enum_f (const char *name, int val, void *arg);
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typedef int ctf_variable_f (const char *name, ctf_id_t type, void *arg);
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typedef int ctf_type_f (ctf_id_t type, void *arg);
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typedef int ctf_archive_member_f (ctf_file_t *fp, const char *name, void *arg);
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typedef int ctf_archive_raw_member_f (const char *name, const void *content,
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size_t len, void *arg);
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@ -250,6 +257,8 @@ extern int ctf_arc_write (const char *, ctf_file_t **, size_t,
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extern ctf_file_t *ctf_parent_file (ctf_file_t *);
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extern const char *ctf_parent_name (ctf_file_t *);
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extern void ctf_parent_name_set (ctf_file_t *, const char *);
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extern int ctf_type_isparent (ctf_file_t *, ctf_id_t);
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extern int ctf_type_ischild (ctf_file_t *, ctf_id_t);
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extern int ctf_import (ctf_file_t *, ctf_file_t *);
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extern int ctf_setmodel (ctf_file_t *, int);
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@ -260,6 +269,32 @@ extern void *ctf_getspecific (ctf_file_t *);
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extern int ctf_errno (ctf_file_t *);
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extern const char *ctf_errmsg (int);
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extern ctf_id_t ctf_type_resolve (ctf_file_t *, ctf_id_t);
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extern char *ctf_type_aname (ctf_file_t *, ctf_id_t);
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extern ssize_t ctf_type_lname (ctf_file_t *, ctf_id_t, char *, size_t);
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extern char *ctf_type_name (ctf_file_t *, ctf_id_t, char *, size_t);
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extern ssize_t ctf_type_size (ctf_file_t *, ctf_id_t);
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extern ssize_t ctf_type_align (ctf_file_t *, ctf_id_t);
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extern int ctf_type_kind (ctf_file_t *, ctf_id_t);
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extern ctf_id_t ctf_type_reference (ctf_file_t *, ctf_id_t);
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extern ctf_id_t ctf_type_pointer (ctf_file_t *, ctf_id_t);
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extern int ctf_type_encoding (ctf_file_t *, ctf_id_t, ctf_encoding_t *);
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extern int ctf_type_visit (ctf_file_t *, ctf_id_t, ctf_visit_f *, void *);
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extern int ctf_type_cmp (ctf_file_t *, ctf_id_t, ctf_file_t *, ctf_id_t);
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extern int ctf_type_compat (ctf_file_t *, ctf_id_t, ctf_file_t *, ctf_id_t);
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extern int ctf_member_info (ctf_file_t *, ctf_id_t, const char *,
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ctf_membinfo_t *);
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extern int ctf_array_info (ctf_file_t *, ctf_id_t, ctf_arinfo_t *);
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extern const char *ctf_enum_name (ctf_file_t *, ctf_id_t, int);
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extern int ctf_enum_value (ctf_file_t *, ctf_id_t, const char *, int *);
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extern int ctf_member_iter (ctf_file_t *, ctf_id_t, ctf_member_f *, void *);
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extern int ctf_enum_iter (ctf_file_t *, ctf_id_t, ctf_enum_f *, void *);
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extern int ctf_type_iter (ctf_file_t *, ctf_type_f *, void *);
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extern int ctf_variable_iter (ctf_file_t *, ctf_variable_f *, void *);
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extern int ctf_archive_iter (const ctf_archive_t *, ctf_archive_member_f *,
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void *);
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/* This function alone does not currently operate on CTF files masquerading
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@ -268,6 +303,7 @@ extern int ctf_archive_iter (const ctf_archive_t *, ctf_archive_member_f *,
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to deal with non-archives at all. */
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extern int ctf_archive_raw_iter (const ctf_archive_t *,
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ctf_archive_raw_member_f *, void *);
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extern ctf_id_t ctf_add_array (ctf_file_t *, uint32_t,
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const ctf_arinfo_t *);
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extern ctf_id_t ctf_add_const (ctf_file_t *, uint32_t, ctf_id_t);
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