| /* Process source files and output type information. |
| Copyright (C) 2002-2021 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it under |
| the terms of the GNU General Public License as published by the Free |
| Software Foundation; either version 3, or (at your option) any later |
| version. |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifdef HOST_GENERATOR_FILE |
| #include "config.h" |
| #define GENERATOR_FILE 1 |
| #else |
| #include "bconfig.h" |
| #endif |
| #include "system.h" |
| #include "errors.h" /* for fatal */ |
| #include "getopt.h" |
| #include "version.h" /* for version_string & pkgversion_string. */ |
| #include "xregex.h" |
| #include "obstack.h" |
| #include "gengtype.h" |
| #include "filenames.h" |
| |
| /* Data types, macros, etc. used only in this file. */ |
| |
| |
| /* The list of output files. */ |
| outf_p output_files; |
| |
| /* The output header file that is included into pretty much every |
| source file. */ |
| outf_p header_file; |
| |
| |
| /* The name of the file containing the list of input files. */ |
| static char *inputlist; |
| |
| /* The plugin input files and their number; in that case only |
| a single file is produced. */ |
| static input_file **plugin_files; |
| static size_t nb_plugin_files; |
| |
| /* The generated plugin output file and name. */ |
| static outf_p plugin_output; |
| static char *plugin_output_filename; |
| |
| /* Our source directory and its length. */ |
| const char *srcdir; |
| size_t srcdir_len; |
| |
| /* Variables used for reading and writing the state. */ |
| const char *read_state_filename; |
| const char *write_state_filename; |
| |
| /* Variables to help debugging. */ |
| int do_dump; |
| int do_debug; |
| |
| /* Level for verbose messages. */ |
| int verbosity_level; |
| |
| /* We have a type count and use it to set the state_number of newly |
| allocated types to some unique negative number. */ |
| static int type_count; |
| |
| /* The backup directory should be in the same file system as the |
| generated files, otherwise the rename(2) system call would fail. |
| If NULL, no backup is made when overwriting a generated file. */ |
| static const char* backup_dir; /* (-B) program option. */ |
| |
| |
| static outf_p create_file (const char *, const char *); |
| |
| static const char *get_file_basename (const input_file *); |
| static const char *get_file_realbasename (const input_file *); |
| |
| static int get_prefix_langdir_index (const char *); |
| static const char *get_file_langdir (const input_file *); |
| |
| static void dump_pair (int indent, pair_p p); |
| static void dump_type (int indent, type_p p); |
| static void dump_type_list (int indent, type_p p); |
| |
| |
| /* Nonzero iff an error has occurred. */ |
| bool hit_error = false; |
| |
| static void gen_rtx_next (void); |
| static void write_rtx_next (void); |
| static void open_base_files (void); |
| static void close_output_files (void); |
| |
| /* Report an error at POS, printing MSG. */ |
| |
| void |
| error_at_line (const struct fileloc *pos, const char *msg, ...) |
| { |
| va_list ap; |
| |
| gcc_assert (pos != NULL && pos->file != NULL); |
| va_start (ap, msg); |
| |
| fprintf (stderr, "%s:%d: ", get_input_file_name (pos->file), pos->line); |
| vfprintf (stderr, msg, ap); |
| fputc ('\n', stderr); |
| hit_error = true; |
| |
| va_end (ap); |
| } |
| |
| /* Locate the ultimate base class of struct S. */ |
| |
| static const_type_p |
| get_ultimate_base_class (const_type_p s) |
| { |
| while (s->u.s.base_class) |
| s = s->u.s.base_class; |
| return s; |
| } |
| |
| static type_p |
| get_ultimate_base_class (type_p s) |
| { |
| while (s->u.s.base_class) |
| s = s->u.s.base_class; |
| return s; |
| } |
| |
| /* Input file handling. */ |
| |
| /* Table of all input files. */ |
| const input_file **gt_files; |
| size_t num_gt_files; |
| |
| /* Table of headers to be included in gtype-desc.c that are generated |
| during the build. These are identified as "./<filename>.h". */ |
| const char **build_headers; |
| size_t num_build_headers; |
| |
| /* A number of places use the name of this "gengtype.c" file for a |
| location for things that we can't rely on the source to define. |
| Make sure we can still use pointer comparison on filenames. */ |
| input_file* this_file; |
| /* The "system.h" file is likewise specially useful. */ |
| input_file* system_h_file; |
| |
| /* Vector of per-language directories. */ |
| const char **lang_dir_names; |
| size_t num_lang_dirs; |
| |
| /* An array of output files suitable for definitions. There is one |
| BASE_FILES entry for each language. */ |
| static outf_p *base_files; |
| |
| /* Utility debugging function, printing the various type counts within |
| a list of types. Called through the DBGPRINT_COUNT_TYPE macro. */ |
| void |
| dbgprint_count_type_at (const char *fil, int lin, const char *msg, type_p t) |
| { |
| int nb_types = 0, nb_scalar = 0, nb_string = 0; |
| int nb_struct = 0, nb_union = 0, nb_array = 0, nb_pointer = 0; |
| int nb_lang_struct = 0; |
| int nb_user_struct = 0, nb_undefined = 0; |
| type_p p = NULL; |
| for (p = t; p; p = p->next) |
| { |
| nb_types++; |
| switch (p->kind) |
| { |
| case TYPE_UNDEFINED: |
| nb_undefined++; |
| break; |
| case TYPE_SCALAR: |
| nb_scalar++; |
| break; |
| case TYPE_STRING: |
| nb_string++; |
| break; |
| case TYPE_STRUCT: |
| nb_struct++; |
| break; |
| case TYPE_USER_STRUCT: |
| nb_user_struct++; |
| break; |
| case TYPE_UNION: |
| nb_union++; |
| break; |
| case TYPE_POINTER: |
| nb_pointer++; |
| break; |
| case TYPE_ARRAY: |
| nb_array++; |
| break; |
| case TYPE_LANG_STRUCT: |
| nb_lang_struct++; |
| break; |
| case TYPE_NONE: |
| gcc_unreachable (); |
| } |
| } |
| fprintf (stderr, "\n" "%s:%d: %s: @@%%@@ %d types ::\n", |
| lbasename (fil), lin, msg, nb_types); |
| if (nb_scalar > 0 || nb_string > 0) |
| fprintf (stderr, "@@%%@@ %d scalars, %d strings\n", nb_scalar, nb_string); |
| if (nb_struct > 0 || nb_union > 0) |
| fprintf (stderr, "@@%%@@ %d structs, %d unions\n", nb_struct, nb_union); |
| if (nb_pointer > 0 || nb_array > 0) |
| fprintf (stderr, "@@%%@@ %d pointers, %d arrays\n", nb_pointer, nb_array); |
| if (nb_lang_struct > 0) |
| fprintf (stderr, "@@%%@@ %d lang_structs\n", nb_lang_struct); |
| if (nb_user_struct > 0) |
| fprintf (stderr, "@@%%@@ %d user_structs\n", nb_user_struct); |
| if (nb_undefined > 0) |
| fprintf (stderr, "@@%%@@ %d undefined types\n", nb_undefined); |
| fprintf (stderr, "\n"); |
| } |
| |
| /* Scan the input file, LIST, and determine how much space we need to |
| store strings in. Also, count the number of language directories |
| and files. The numbers returned are overestimates as they does not |
| consider repeated files. */ |
| static size_t |
| measure_input_list (FILE *list) |
| { |
| size_t n = 0; |
| int c; |
| bool atbol = true; |
| num_lang_dirs = 0; |
| num_gt_files = plugin_files ? nb_plugin_files : 0; |
| while ((c = getc (list)) != EOF) |
| { |
| n++; |
| if (atbol) |
| { |
| if (c == '[') |
| num_lang_dirs++; |
| else |
| { |
| /* Add space for a lang_bitmap before the input file name. */ |
| n += sizeof (lang_bitmap); |
| num_gt_files++; |
| } |
| atbol = false; |
| } |
| |
| if (c == '\n') |
| atbol = true; |
| } |
| |
| rewind (list); |
| return n; |
| } |
| |
| /* Read one input line from LIST to HEREP (which is updated). A |
| pointer to the string is returned via LINEP. If it was a language |
| subdirectory in square brackets, strip off the square brackets and |
| return true. Otherwise, leave space before the string for a |
| lang_bitmap, and return false. At EOF, returns false, does not |
| touch *HEREP, and sets *LINEP to NULL. POS is used for |
| diagnostics. */ |
| static bool |
| read_input_line (FILE *list, char **herep, char **linep, struct fileloc *pos) |
| { |
| char *here = *herep; |
| char *line; |
| int c = getc (list); |
| |
| /* Read over whitespace. */ |
| while (c == '\n' || c == ' ') |
| c = getc (list); |
| |
| if (c == EOF) |
| { |
| *linep = 0; |
| return false; |
| } |
| else if (c == '[') |
| { |
| /* No space for a lang_bitmap is necessary. Discard the '['. */ |
| c = getc (list); |
| line = here; |
| while (c != ']' && c != '\n' && c != EOF) |
| { |
| *here++ = c; |
| c = getc (list); |
| } |
| *here++ = '\0'; |
| |
| if (c == ']') |
| { |
| c = getc (list); /* eat what should be a newline */ |
| if (c != '\n' && c != EOF) |
| error_at_line (pos, "junk on line after language tag [%s]", line); |
| } |
| else |
| error_at_line (pos, "missing close bracket for language tag [%s", |
| line); |
| |
| *herep = here; |
| *linep = line; |
| return true; |
| } |
| else |
| { |
| /* Leave space for a lang_bitmap. */ |
| memset (here, 0, sizeof (lang_bitmap)); |
| here += sizeof (lang_bitmap); |
| line = here; |
| do |
| { |
| *here++ = c; |
| c = getc (list); |
| } |
| while (c != EOF && c != '\n'); |
| *here++ = '\0'; |
| *herep = here; |
| *linep = line; |
| return false; |
| } |
| } |
| |
| /* Read the list of input files from LIST and compute all of the |
| relevant tables. There is one file per line of the list. At |
| first, all the files on the list are language-generic, but |
| eventually a line will appear which is the name of a language |
| subdirectory in square brackets, like this: [cp]. All subsequent |
| files are specific to that language, until another language |
| subdirectory tag appears. Files can appear more than once, if |
| they apply to more than one language. */ |
| static void |
| read_input_list (const char *listname) |
| { |
| FILE *list = fopen (listname, "r"); |
| if (!list) |
| fatal ("cannot open %s: %s", listname, xstrerror (errno)); |
| else |
| { |
| struct fileloc epos; |
| size_t bufsz = measure_input_list (list); |
| char *buf = XNEWVEC (char, bufsz); |
| char *here = buf; |
| char *committed = buf; |
| char *limit = buf + bufsz; |
| char *line; |
| bool is_language; |
| size_t langno = 0; |
| size_t nfiles = 0; |
| lang_bitmap curlangs = (1 << num_lang_dirs) - 1; |
| |
| epos.file = input_file_by_name (listname); |
| epos.line = 0; |
| |
| lang_dir_names = XNEWVEC (const char *, num_lang_dirs); |
| gt_files = XNEWVEC (const input_file *, num_gt_files); |
| |
| for (;;) |
| { |
| next_line: |
| epos.line++; |
| committed = here; |
| is_language = read_input_line (list, &here, &line, &epos); |
| gcc_assert (here <= limit); |
| if (line == 0) |
| break; |
| else if (is_language) |
| { |
| size_t i; |
| gcc_assert (langno <= num_lang_dirs); |
| for (i = 0; i < langno; i++) |
| if (strcmp (lang_dir_names[i], line) == 0) |
| { |
| error_at_line (&epos, "duplicate language tag [%s]", |
| line); |
| curlangs = 1 << i; |
| here = committed; |
| goto next_line; |
| } |
| |
| curlangs = 1 << langno; |
| lang_dir_names[langno++] = line; |
| } |
| else |
| { |
| size_t i; |
| input_file *inpf = input_file_by_name (line); |
| gcc_assert (nfiles <= num_gt_files); |
| for (i = 0; i < nfiles; i++) |
| /* Since the input_file-s are uniquely hash-consed, we |
| can just compare pointers! */ |
| if (gt_files[i] == inpf) |
| { |
| /* Throw away the string we just read, and add the |
| current language to the existing string's bitmap. */ |
| lang_bitmap bmap = get_lang_bitmap (inpf); |
| if (bmap & curlangs) |
| error_at_line (&epos, |
| "file %s specified more than once " |
| "for language %s", line, |
| langno == |
| 0 ? "(all)" : lang_dir_names[langno - |
| 1]); |
| |
| bmap |= curlangs; |
| set_lang_bitmap (inpf, bmap); |
| here = committed; |
| goto next_line; |
| } |
| |
| set_lang_bitmap (inpf, curlangs); |
| gt_files[nfiles++] = inpf; |
| } |
| } |
| /* Update the global counts now that we know accurately how many |
| things there are. (We do not bother resizing the arrays down.) */ |
| num_lang_dirs = langno; |
| /* Add the plugin files if provided. */ |
| if (plugin_files) |
| { |
| size_t i; |
| for (i = 0; i < nb_plugin_files; i++) |
| gt_files[nfiles++] = plugin_files[i]; |
| } |
| num_gt_files = nfiles; |
| } |
| |
| /* Sanity check: any file that resides in a language subdirectory |
| (e.g. 'cp') ought to belong to the corresponding language. |
| ??? Still true if for instance ObjC++ is enabled and C++ isn't? |
| (Can you even do that? Should you be allowed to?) */ |
| { |
| size_t f; |
| for (f = 0; f < num_gt_files; f++) |
| { |
| lang_bitmap bitmap = get_lang_bitmap (gt_files[f]); |
| const char *basename = get_file_basename (gt_files[f]); |
| const char *slashpos = strchr (basename, '/'); |
| #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
| const char *slashpos2 = strchr (basename, '\\'); |
| |
| if (!slashpos || (slashpos2 && slashpos2 < slashpos)) |
| slashpos = slashpos2; |
| #endif |
| |
| if (slashpos) |
| { |
| size_t l; |
| for (l = 0; l < num_lang_dirs; l++) |
| if ((size_t) (slashpos - basename) == strlen (lang_dir_names[l]) |
| && memcmp (basename, lang_dir_names[l], |
| strlen (lang_dir_names[l])) == 0) |
| { |
| if (!(bitmap & (1 << l))) |
| error ("%s is in language directory '%s' but is not " |
| "tagged for that language", |
| basename, lang_dir_names[l]); |
| break; |
| } |
| } |
| } |
| } |
| |
| if (ferror (list)) |
| fatal ("error reading %s: %s", listname, xstrerror (errno)); |
| |
| fclose (list); |
| } |
| |
| |
| |
| /* The one and only TYPE_STRING. */ |
| |
| struct type string_type = { |
| TYPE_STRING, 0, 0, 0, GC_USED, {0} |
| }; |
| |
| /* The two and only TYPE_SCALARs. Their u.scalar_is_char flags are |
| set early in main. */ |
| |
| struct type scalar_nonchar = { |
| TYPE_SCALAR, 0, 0, 0, GC_USED, {0} |
| }; |
| |
| struct type scalar_char = { |
| TYPE_SCALAR, 0, 0, 0, GC_USED, {0} |
| }; |
| |
| /* Lists of various things. */ |
| |
| pair_p typedefs = NULL; |
| type_p structures = NULL; |
| pair_p variables = NULL; |
| |
| static type_p adjust_field_tree_exp (type_p t, options_p opt); |
| static type_p adjust_field_rtx_def (type_p t, options_p opt); |
| |
| /* Define S as a typedef to T at POS. */ |
| |
| void |
| do_typedef (const char *s, type_p t, struct fileloc *pos) |
| { |
| pair_p p; |
| |
| /* temporary kludge - gengtype doesn't handle conditionals or |
| macros. Ignore any attempt to typedef CUMULATIVE_ARGS, unless it |
| is coming from this file (main() sets them up with safe dummy |
| definitions). */ |
| if (!strcmp (s, "CUMULATIVE_ARGS") && pos->file != this_file) |
| return; |
| |
| for (p = typedefs; p != NULL; p = p->next) |
| if (strcmp (p->name, s) == 0) |
| { |
| if (p->type != t && strcmp (s, "result_type") != 0) |
| { |
| error_at_line (pos, "type `%s' previously defined", s); |
| error_at_line (&p->line, "previously defined here"); |
| } |
| return; |
| } |
| |
| p = XNEW (struct pair); |
| p->next = typedefs; |
| p->name = s; |
| p->type = t; |
| p->line = *pos; |
| p->opt = NULL; |
| typedefs = p; |
| } |
| |
| /* Define S as a typename of a scalar. Cannot be used to define |
| typedefs of 'char'. Note: is also used for pointer-to-function |
| typedefs (which are therefore not treated as pointers). */ |
| |
| void |
| do_scalar_typedef (const char *s, struct fileloc *pos) |
| { |
| do_typedef (s, &scalar_nonchar, pos); |
| } |
| |
| /* Similar to strtok_r. */ |
| |
| static char * |
| strtoken (char *str, const char *delim, char **next) |
| { |
| char *p; |
| |
| if (str == NULL) |
| str = *next; |
| |
| /* Skip the leading delimiters. */ |
| str += strspn (str, delim); |
| if (*str == '\0') |
| /* This is an empty token. */ |
| return NULL; |
| |
| /* The current token. */ |
| p = str; |
| |
| /* Find the next delimiter. */ |
| str += strcspn (str, delim); |
| if (*str == '\0') |
| /* This is the last token. */ |
| *next = str; |
| else |
| { |
| /* Terminate the current token. */ |
| *str = '\0'; |
| /* Advance to the next token. */ |
| *next = str + 1; |
| } |
| |
| return p; |
| } |
| |
| /* Define TYPE_NAME to be a user defined type at location POS. */ |
| |
| type_p |
| create_user_defined_type (const char *type_name, struct fileloc *pos) |
| { |
| type_p ty = find_structure (type_name, TYPE_USER_STRUCT); |
| |
| /* We might have already seen an incomplete decl of the given type, |
| in which case we won't have yet seen a GTY((user)), and the type will |
| only have kind "TYPE_STRUCT". Mark it as a user struct. */ |
| ty->kind = TYPE_USER_STRUCT; |
| |
| ty->u.s.line = *pos; |
| ty->u.s.bitmap = get_lang_bitmap (pos->file); |
| do_typedef (type_name, ty, pos); |
| |
| /* If TYPE_NAME specifies a template, create references to the types |
| in the template by pretending that each type is a field of TY. |
| This is needed to make sure that the types referenced by the |
| template are marked as used. */ |
| char *str = xstrdup (type_name); |
| char *open_bracket = strchr (str, '<'); |
| if (open_bracket) |
| { |
| /* We only accept simple template declarations (see |
| require_template_declaration), so we only need to parse a |
| comma-separated list of strings, implicitly assumed to |
| be type names, potentially with "*" characters. */ |
| char *arg = open_bracket + 1; |
| /* Workaround -Wmaybe-uninitialized false positive during |
| profiledbootstrap by initializing it. */ |
| char *next = NULL; |
| char *type_id = strtoken (arg, ",>", &next); |
| pair_p fields = 0; |
| while (type_id) |
| { |
| /* Create a new field for every type found inside the template |
| parameter list. */ |
| |
| /* Support a single trailing "*" character. */ |
| const char *star = strchr (type_id, '*'); |
| int is_ptr = (star != NULL); |
| size_t offset_to_star = star - type_id; |
| if (is_ptr) |
| offset_to_star = star - type_id; |
| |
| if (strstr (type_id, "char*")) |
| { |
| type_id = strtoken (0, ",>", &next); |
| continue; |
| } |
| |
| char *field_name = xstrdup (type_id); |
| |
| type_p arg_type; |
| if (is_ptr) |
| { |
| /* Strip off the first '*' character (and any subsequent text). */ |
| *(field_name + offset_to_star) = '\0'; |
| |
| arg_type = find_structure (field_name, TYPE_STRUCT); |
| arg_type = create_pointer (arg_type); |
| } |
| else |
| arg_type = resolve_typedef (field_name, pos); |
| |
| fields = create_field_at (fields, arg_type, field_name, 0, pos); |
| type_id = strtoken (0, ",>", &next); |
| } |
| |
| /* Associate the field list to TY. */ |
| ty->u.s.fields = fields; |
| } |
| free (str); |
| |
| return ty; |
| } |
| |
| |
| /* Given a typedef name S, return its associated type. Return NULL if |
| S is not a registered type name. */ |
| |
| static type_p |
| type_for_name (const char *s) |
| { |
| pair_p p; |
| |
| /* Special-case support for types within a "gcc::" namespace. Rather |
| than fully-supporting namespaces, simply strip off the "gcc::" prefix |
| where present. This allows us to have GTY roots of this form: |
| extern GTY(()) gcc::some_type *some_ptr; |
| where the autogenerated functions will refer to simply "some_type", |
| where they can be resolved into their namespace. */ |
| if (startswith (s, "gcc::")) |
| s += 5; |
| |
| for (p = typedefs; p != NULL; p = p->next) |
| if (strcmp (p->name, s) == 0) |
| return p->type; |
| return NULL; |
| } |
| |
| |
| /* Create an undefined type with name S and location POS. Return the |
| newly created type. */ |
| |
| static type_p |
| create_undefined_type (const char *s, struct fileloc *pos) |
| { |
| type_p ty = find_structure (s, TYPE_UNDEFINED); |
| ty->u.s.line = *pos; |
| ty->u.s.bitmap = get_lang_bitmap (pos->file); |
| do_typedef (s, ty, pos); |
| return ty; |
| } |
| |
| |
| /* Return the type previously defined for S. Use POS to report errors. */ |
| |
| type_p |
| resolve_typedef (const char *s, struct fileloc *pos) |
| { |
| bool is_template_instance = (strchr (s, '<') != NULL); |
| type_p p = type_for_name (s); |
| |
| /* If we did not find a typedef registered, generate a TYPE_UNDEFINED |
| type for regular type identifiers. If the type identifier S is a |
| template instantiation, however, we treat it as a user defined |
| type. |
| |
| FIXME, this is actually a limitation in gengtype. Supporting |
| template types and their instances would require keeping separate |
| track of the basic types definition and its instances. This |
| essentially forces all template classes in GC to be marked |
| GTY((user)). */ |
| if (!p) |
| p = (is_template_instance) |
| ? create_user_defined_type (s, pos) |
| : create_undefined_type (s, pos); |
| |
| return p; |
| } |
| |
| /* Add SUBCLASS to head of linked list of BASE's subclasses. */ |
| |
| void add_subclass (type_p base, type_p subclass) |
| { |
| gcc_assert (union_or_struct_p (base)); |
| gcc_assert (union_or_struct_p (subclass)); |
| |
| subclass->u.s.next_sibling_class = base->u.s.first_subclass; |
| base->u.s.first_subclass = subclass; |
| } |
| |
| /* Create and return a new structure with tag NAME at POS with fields |
| FIELDS and options O. The KIND of structure must be one of |
| TYPE_STRUCT, TYPE_UNION or TYPE_USER_STRUCT. */ |
| |
| type_p |
| new_structure (const char *name, enum typekind kind, struct fileloc *pos, |
| pair_p fields, options_p o, type_p base_class) |
| { |
| type_p si; |
| type_p s = NULL; |
| lang_bitmap bitmap = get_lang_bitmap (pos->file); |
| bool isunion = (kind == TYPE_UNION); |
| type_p *p = &structures; |
| |
| gcc_assert (union_or_struct_p (kind)); |
| |
| for (si = structures; si != NULL; p = &si->next, si = *p) |
| if (strcmp (name, si->u.s.tag) == 0 && UNION_P (si) == isunion) |
| { |
| type_p ls = NULL; |
| if (si->kind == TYPE_LANG_STRUCT) |
| { |
| ls = si; |
| |
| for (si = ls->u.s.lang_struct; si != NULL; si = si->next) |
| if (si->u.s.bitmap == bitmap) |
| s = si; |
| } |
| else if (si->u.s.line.file != NULL && si->u.s.bitmap != bitmap) |
| { |
| ls = si; |
| type_count++; |
| si = XCNEW (struct type); |
| memcpy (si, ls, sizeof (struct type)); |
| ls->kind = TYPE_LANG_STRUCT; |
| ls->u.s.lang_struct = si; |
| ls->u.s.fields = NULL; |
| si->next = NULL; |
| si->state_number = -type_count; |
| si->pointer_to = NULL; |
| si->u.s.lang_struct = ls; |
| } |
| else |
| s = si; |
| |
| if (ls != NULL && s == NULL) |
| { |
| type_count++; |
| s = XCNEW (struct type); |
| s->state_number = -type_count; |
| s->next = ls->u.s.lang_struct; |
| ls->u.s.lang_struct = s; |
| s->u.s.lang_struct = ls; |
| } |
| break; |
| } |
| |
| if (s == NULL) |
| { |
| type_count++; |
| s = XCNEW (struct type); |
| s->state_number = -type_count; |
| *p = s; |
| } |
| |
| if (s->u.s.lang_struct && (s->u.s.lang_struct->u.s.bitmap & bitmap)) |
| { |
| error_at_line (pos, "duplicate definition of '%s %s'", |
| isunion ? "union" : "struct", s->u.s.tag); |
| error_at_line (&s->u.s.line, "previous definition here"); |
| } |
| |
| s->kind = kind; |
| s->u.s.tag = name; |
| s->u.s.line = *pos; |
| s->u.s.fields = fields; |
| s->u.s.opt = o; |
| s->u.s.bitmap = bitmap; |
| if (s->u.s.lang_struct) |
| s->u.s.lang_struct->u.s.bitmap |= bitmap; |
| s->u.s.base_class = base_class; |
| if (base_class) |
| add_subclass (base_class, s); |
| |
| return s; |
| } |
| |
| /* Return the previously-defined structure or union with tag NAME, |
| or a new empty structure or union if none was defined previously. |
| The KIND of structure must be one of TYPE_STRUCT, TYPE_UNION or |
| TYPE_USER_STRUCT. */ |
| |
| type_p |
| find_structure (const char *name, enum typekind kind) |
| { |
| type_p s; |
| bool isunion = (kind == TYPE_UNION); |
| type_p *p = &structures; |
| |
| gcc_assert (kind == TYPE_UNDEFINED || union_or_struct_p (kind)); |
| |
| for (s = structures; s != NULL; p = &s->next, s = *p) |
| if (strcmp (name, s->u.s.tag) == 0 && UNION_P (s) == isunion) |
| return s; |
| |
| type_count++; |
| s = XCNEW (struct type); |
| s->state_number = -type_count; |
| s->kind = kind; |
| s->u.s.tag = name; |
| *p = s; |
| return s; |
| } |
| |
| /* Return a scalar type with name NAME. */ |
| |
| type_p |
| create_scalar_type (const char *name) |
| { |
| if (!strcmp (name, "char") || !strcmp (name, "unsigned char")) |
| return &scalar_char; |
| else |
| return &scalar_nonchar; |
| } |
| |
| |
| /* Return a pointer to T. */ |
| |
| type_p |
| create_pointer (type_p t) |
| { |
| if (!t->pointer_to) |
| { |
| type_p r = XCNEW (struct type); |
| type_count++; |
| r->state_number = -type_count; |
| r->kind = TYPE_POINTER; |
| r->u.p = t; |
| t->pointer_to = r; |
| } |
| return t->pointer_to; |
| } |
| |
| /* Return an array of length LEN. */ |
| |
| type_p |
| create_array (type_p t, const char *len) |
| { |
| type_p v; |
| |
| type_count++; |
| v = XCNEW (struct type); |
| v->kind = TYPE_ARRAY; |
| v->state_number = -type_count; |
| v->u.a.p = t; |
| v->u.a.len = len; |
| return v; |
| } |
| |
| /* Return a string options structure with name NAME and info INFO. |
| NEXT is the next option in the chain. */ |
| options_p |
| create_string_option (options_p next, const char *name, const char *info) |
| { |
| options_p o = XNEW (struct options); |
| o->kind = OPTION_STRING; |
| o->next = next; |
| o->name = name; |
| o->info.string = info; |
| return o; |
| } |
| |
| /* Create a type options structure with name NAME and info INFO. NEXT |
| is the next option in the chain. */ |
| options_p |
| create_type_option (options_p next, const char* name, type_p info) |
| { |
| options_p o = XNEW (struct options); |
| o->next = next; |
| o->name = name; |
| o->kind = OPTION_TYPE; |
| o->info.type = info; |
| return o; |
| } |
| |
| /* Create a nested pointer options structure with name NAME and info |
| INFO. NEXT is the next option in the chain. */ |
| options_p |
| create_nested_option (options_p next, const char* name, |
| struct nested_ptr_data* info) |
| { |
| options_p o; |
| o = XNEW (struct options); |
| o->next = next; |
| o->name = name; |
| o->kind = OPTION_NESTED; |
| o->info.nested = info; |
| return o; |
| } |
| |
| /* Return an options structure for a "nested_ptr" option. */ |
| options_p |
| create_nested_ptr_option (options_p next, type_p t, |
| const char *to, const char *from) |
| { |
| struct nested_ptr_data *d = XNEW (struct nested_ptr_data); |
| |
| d->type = adjust_field_type (t, 0); |
| d->convert_to = to; |
| d->convert_from = from; |
| return create_nested_option (next, "nested_ptr", d); |
| } |
| |
| /* Add a variable named S of type T with options O defined at POS, |
| to `variables'. */ |
| void |
| note_variable (const char *s, type_p t, options_p o, struct fileloc *pos) |
| { |
| pair_p n; |
| n = XNEW (struct pair); |
| n->name = s; |
| n->type = t; |
| n->line = *pos; |
| n->opt = o; |
| n->next = variables; |
| variables = n; |
| } |
| |
| /* Most-general structure field creator. */ |
| static pair_p |
| create_field_all (pair_p next, type_p type, const char *name, options_p opt, |
| const input_file *inpf, int line) |
| { |
| pair_p field; |
| |
| field = XNEW (struct pair); |
| field->next = next; |
| field->type = type; |
| field->name = name; |
| field->opt = opt; |
| field->line.file = inpf; |
| field->line.line = line; |
| return field; |
| } |
| |
| /* Create a field that came from the source code we are scanning, |
| i.e. we have a 'struct fileloc', and possibly options; also, |
| adjust_field_type should be called. */ |
| pair_p |
| create_field_at (pair_p next, type_p type, const char *name, options_p opt, |
| struct fileloc *pos) |
| { |
| return create_field_all (next, adjust_field_type (type, opt), |
| name, opt, pos->file, pos->line); |
| } |
| |
| /* Create a fake field with the given type and name. NEXT is the next |
| field in the chain. */ |
| #define create_field(next,type,name) \ |
| create_field_all (next,type,name, 0, this_file, __LINE__) |
| |
| /* Like create_field, but the field is only valid when condition COND |
| is true. */ |
| |
| static pair_p |
| create_optional_field_ (pair_p next, type_p type, const char *name, |
| const char *cond, int line) |
| { |
| static int id = 1; |
| pair_p union_fields; |
| type_p union_type; |
| |
| /* Create a fake union type with a single nameless field of type TYPE. |
| The field has a tag of "1". This allows us to make the presence |
| of a field of type TYPE depend on some boolean "desc" being true. */ |
| union_fields = create_field (NULL, type, ""); |
| union_fields->opt = |
| create_string_option (union_fields->opt, "dot", ""); |
| union_fields->opt = |
| create_string_option (union_fields->opt, "tag", "1"); |
| union_type = |
| new_structure (xasprintf ("%s_%d", "fake_union", id++), TYPE_UNION, |
| &lexer_line, union_fields, NULL, NULL); |
| |
| /* Create the field and give it the new fake union type. Add a "desc" |
| tag that specifies the condition under which the field is valid. */ |
| return create_field_all (next, union_type, name, |
| create_string_option (0, "desc", cond), |
| this_file, line); |
| } |
| |
| #define create_optional_field(next,type,name,cond) \ |
| create_optional_field_(next,type,name,cond,__LINE__) |
| |
| /* Reverse a linked list of 'struct pair's in place. */ |
| pair_p |
| nreverse_pairs (pair_p list) |
| { |
| pair_p prev = 0, p, next; |
| for (p = list; p; p = next) |
| { |
| next = p->next; |
| p->next = prev; |
| prev = p; |
| } |
| return prev; |
| } |
| |
| |
| /* We don't care how long a CONST_DOUBLE is. */ |
| #define CONST_DOUBLE_FORMAT "ww" |
| /* We don't want to see codes that are only for generator files. */ |
| #undef GENERATOR_FILE |
| |
| enum rtx_code |
| { |
| #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM , |
| #include "rtl.def" |
| #undef DEF_RTL_EXPR |
| NUM_RTX_CODE |
| }; |
| |
| static const char *const rtx_name[NUM_RTX_CODE] = { |
| #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) NAME , |
| #include "rtl.def" |
| #undef DEF_RTL_EXPR |
| }; |
| |
| static const char *const rtx_format[NUM_RTX_CODE] = { |
| #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) FORMAT , |
| #include "rtl.def" |
| #undef DEF_RTL_EXPR |
| }; |
| |
| static int rtx_next_new[NUM_RTX_CODE]; |
| |
| /* We also need codes and names for insn notes (not register notes). |
| Note that we do *not* bias the note values here. */ |
| enum insn_note |
| { |
| #define DEF_INSN_NOTE(NAME) NAME, |
| #include "insn-notes.def" |
| #undef DEF_INSN_NOTE |
| |
| NOTE_INSN_MAX |
| }; |
| |
| /* We must allocate one more entry here, as we use NOTE_INSN_MAX as the |
| default field for line number notes. */ |
| static const char *const note_insn_name[NOTE_INSN_MAX + 1] = { |
| #define DEF_INSN_NOTE(NAME) #NAME, |
| #include "insn-notes.def" |
| #undef DEF_INSN_NOTE |
| }; |
| |
| #undef CONST_DOUBLE_FORMAT |
| #define GENERATOR_FILE |
| |
| /* Generate the contents of the rtx_next array. This really doesn't belong |
| in gengtype at all, but it's needed for adjust_field_rtx_def. */ |
| |
| static void |
| gen_rtx_next (void) |
| { |
| int i; |
| for (i = 0; i < NUM_RTX_CODE; i++) |
| { |
| int k; |
| |
| rtx_next_new[i] = -1; |
| if (startswith (rtx_format[i], "uu")) |
| rtx_next_new[i] = 1; |
| else if (i == COND_EXEC || i == SET || i == EXPR_LIST || i == INSN_LIST) |
| rtx_next_new[i] = 1; |
| else |
| for (k = strlen (rtx_format[i]) - 1; k >= 0; k--) |
| if (rtx_format[i][k] == 'e' || rtx_format[i][k] == 'u') |
| rtx_next_new[i] = k; |
| } |
| } |
| |
| /* Write out the contents of the rtx_next array. */ |
| static void |
| write_rtx_next (void) |
| { |
| outf_p f = get_output_file_with_visibility (NULL); |
| int i; |
| if (!f) |
| return; |
| |
| oprintf (f, "\n/* Used to implement the RTX_NEXT macro. */\n"); |
| oprintf (f, "EXPORTED_CONST unsigned char rtx_next[NUM_RTX_CODE] = {\n"); |
| for (i = 0; i < NUM_RTX_CODE; i++) |
| if (rtx_next_new[i] == -1) |
| oprintf (f, " 0,\n"); |
| else |
| oprintf (f, |
| " RTX_HDR_SIZE + %d * sizeof (rtunion),\n", rtx_next_new[i]); |
| oprintf (f, "};\n"); |
| } |
| |
| /* Handle `special("rtx_def")'. This is a special case for field |
| `fld' of struct rtx_def, which is an array of unions whose values |
| are based in a complex way on the type of RTL. */ |
| |
| static type_p |
| adjust_field_rtx_def (type_p t, options_p ARG_UNUSED (opt)) |
| { |
| pair_p flds = NULL; |
| options_p nodot; |
| int i; |
| type_p rtx_tp, rtvec_tp, tree_tp, mem_attrs_tp, note_union_tp, scalar_tp; |
| type_p basic_block_tp, reg_attrs_tp, constant_tp, symbol_union_tp; |
| |
| if (t->kind != TYPE_UNION) |
| { |
| error_at_line (&lexer_line, |
| "special `rtx_def' must be applied to a union"); |
| return &string_type; |
| } |
| |
| nodot = create_string_option (NULL, "dot", ""); |
| |
| rtx_tp = create_pointer (find_structure ("rtx_def", TYPE_STRUCT)); |
| rtvec_tp = create_pointer (find_structure ("rtvec_def", TYPE_STRUCT)); |
| tree_tp = create_pointer (find_structure ("tree_node", TYPE_UNION)); |
| mem_attrs_tp = create_pointer (find_structure ("mem_attrs", TYPE_STRUCT)); |
| reg_attrs_tp = |
| create_pointer (find_structure ("reg_attrs", TYPE_STRUCT)); |
| basic_block_tp = |
| create_pointer (find_structure ("basic_block_def", TYPE_STRUCT)); |
| constant_tp = |
| create_pointer (find_structure ("constant_descriptor_rtx", TYPE_STRUCT)); |
| scalar_tp = &scalar_nonchar; /* rtunion int */ |
| |
| { |
| pair_p note_flds = NULL; |
| int c; |
| |
| for (c = 0; c <= NOTE_INSN_MAX; c++) |
| { |
| switch (c) |
| { |
| case NOTE_INSN_MAX: |
| case NOTE_INSN_DELETED_LABEL: |
| case NOTE_INSN_DELETED_DEBUG_LABEL: |
| note_flds = create_field (note_flds, &string_type, "rt_str"); |
| break; |
| |
| case NOTE_INSN_BLOCK_BEG: |
| case NOTE_INSN_BLOCK_END: |
| note_flds = create_field (note_flds, tree_tp, "rt_tree"); |
| break; |
| |
| case NOTE_INSN_VAR_LOCATION: |
| note_flds = create_field (note_flds, rtx_tp, "rt_rtx"); |
| break; |
| |
| default: |
| note_flds = create_field (note_flds, scalar_tp, "rt_int"); |
| break; |
| } |
| /* NOTE_INSN_MAX is used as the default field for line |
| number notes. */ |
| if (c == NOTE_INSN_MAX) |
| note_flds->opt = |
| create_string_option (nodot, "default", ""); |
| else |
| note_flds->opt = |
| create_string_option (nodot, "tag", note_insn_name[c]); |
| } |
| note_union_tp = new_structure ("rtx_def_note_subunion", TYPE_UNION, |
| &lexer_line, note_flds, NULL, NULL); |
| } |
| /* Create a type to represent the various forms of SYMBOL_REF_DATA. */ |
| { |
| pair_p sym_flds; |
| sym_flds = create_field (NULL, tree_tp, "rt_tree"); |
| sym_flds->opt = create_string_option (nodot, "default", ""); |
| sym_flds = create_field (sym_flds, constant_tp, "rt_constant"); |
| sym_flds->opt = create_string_option (nodot, "tag", "1"); |
| symbol_union_tp = new_structure ("rtx_def_symbol_subunion", TYPE_UNION, |
| &lexer_line, sym_flds, NULL, NULL); |
| } |
| for (i = 0; i < NUM_RTX_CODE; i++) |
| { |
| pair_p subfields = NULL; |
| size_t aindex, nmindex; |
| const char *sname; |
| type_p substruct; |
| char *ftag; |
| |
| for (aindex = 0; aindex < strlen (rtx_format[i]); aindex++) |
| { |
| type_p t; |
| const char *subname; |
| |
| switch (rtx_format[i][aindex]) |
| { |
| case '*': |
| case 'i': |
| case 'n': |
| case 'w': |
| case 'r': |
| t = scalar_tp; |
| subname = "rt_int"; |
| break; |
| |
| case 'p': |
| t = scalar_tp; |
| subname = "rt_subreg"; |
| break; |
| |
| case '0': |
| if (i == MEM && aindex == 1) |
| t = mem_attrs_tp, subname = "rt_mem"; |
| else if (i == JUMP_INSN && aindex == 7) |
| t = rtx_tp, subname = "rt_rtx"; |
| else if (i == CODE_LABEL && aindex == 4) |
| t = scalar_tp, subname = "rt_int"; |
| else if (i == CODE_LABEL && aindex == 3) |
| t = rtx_tp, subname = "rt_rtx"; |
| else if (i == LABEL_REF && (aindex == 1 || aindex == 2)) |
| t = rtx_tp, subname = "rt_rtx"; |
| else if (i == NOTE && aindex == 3) |
| t = note_union_tp, subname = ""; |
| else if (i == NOTE && aindex == 4) |
| t = scalar_tp, subname = "rt_int"; |
| else if (i == NOTE && aindex >= 6) |
| t = scalar_tp, subname = "rt_int"; |
| else if (i == ADDR_DIFF_VEC && aindex == 4) |
| t = scalar_tp, subname = "rt_int"; |
| else if (i == VALUE && aindex == 0) |
| t = scalar_tp, subname = "rt_int"; |
| else if (i == DEBUG_EXPR && aindex == 0) |
| t = tree_tp, subname = "rt_tree"; |
| else if (i == SYMBOL_REF && aindex == 1) |
| t = symbol_union_tp, subname = ""; |
| else if (i == JUMP_TABLE_DATA && aindex >= 4) |
| t = scalar_tp, subname = "rt_int"; |
| else if (i == BARRIER && aindex >= 2) |
| t = scalar_tp, subname = "rt_int"; |
| else if (i == ENTRY_VALUE && aindex == 0) |
| t = rtx_tp, subname = "rt_rtx"; |
| else |
| { |
| error_at_line |
| (&lexer_line, |
| "rtx type `%s' has `0' in position %lu, can't handle", |
| rtx_name[i], (unsigned long) aindex); |
| t = &string_type; |
| subname = "rt_int"; |
| } |
| break; |
| |
| case 's': |
| case 'S': |
| case 'T': |
| t = &string_type; |
| subname = "rt_str"; |
| break; |
| |
| case 'e': |
| case 'u': |
| t = rtx_tp; |
| subname = "rt_rtx"; |
| break; |
| |
| case 'E': |
| case 'V': |
| t = rtvec_tp; |
| subname = "rt_rtvec"; |
| break; |
| |
| case 't': |
| t = tree_tp; |
| subname = "rt_tree"; |
| break; |
| |
| case 'B': |
| t = basic_block_tp; |
| subname = "rt_bb"; |
| break; |
| |
| default: |
| error_at_line |
| (&lexer_line, |
| "rtx type `%s' has `%c' in position %lu, can't handle", |
| rtx_name[i], rtx_format[i][aindex], |
| (unsigned long) aindex); |
| t = &string_type; |
| subname = "rt_int"; |
| break; |
| } |
| |
| subfields = create_field (subfields, t, |
| xasprintf (".fld[%lu].%s", |
| (unsigned long) aindex, |
| subname)); |
| subfields->opt = nodot; |
| if (t == note_union_tp) |
| subfields->opt = |
| create_string_option (subfields->opt, "desc", |
| "NOTE_KIND (&%0)"); |
| if (t == symbol_union_tp) |
| subfields->opt = |
| create_string_option (subfields->opt, "desc", |
| "CONSTANT_POOL_ADDRESS_P (&%0)"); |
| } |
| |
| if (i == REG) |
| subfields = create_field (subfields, reg_attrs_tp, "reg.attrs"); |
| |
| if (i == SYMBOL_REF) |
| { |
| /* Add the "block_sym" field if SYMBOL_REF_HAS_BLOCK_INFO_P |
| holds. */ |
| type_p field_tp = find_structure ("block_symbol", TYPE_STRUCT); |
| subfields |
| = create_optional_field (subfields, field_tp, "block_sym", |
| "SYMBOL_REF_HAS_BLOCK_INFO_P (&%0)"); |
| } |
| |
| sname = xasprintf ("rtx_def_%s", rtx_name[i]); |
| substruct = new_structure (sname, TYPE_STRUCT, &lexer_line, subfields, |
| NULL, NULL); |
| |
| ftag = xstrdup (rtx_name[i]); |
| for (nmindex = 0; nmindex < strlen (ftag); nmindex++) |
| ftag[nmindex] = TOUPPER (ftag[nmindex]); |
| flds = create_field (flds, substruct, ""); |
| flds->opt = create_string_option (nodot, "tag", ftag); |
| } |
| return new_structure ("rtx_def_subunion", TYPE_UNION, &lexer_line, flds, |
| nodot, NULL); |
| } |
| |
| /* Handle `special("tree_exp")'. This is a special case for |
| field `operands' of struct tree_exp, which although it claims to contain |
| pointers to trees, actually sometimes contains pointers to RTL too. |
| Passed T, the old type of the field, and OPT its options. Returns |
| a new type for the field. */ |
| |
| static type_p |
| adjust_field_tree_exp (type_p t, options_p opt ATTRIBUTE_UNUSED) |
| { |
| pair_p flds; |
| options_p nodot; |
| |
| if (t->kind != TYPE_ARRAY) |
| { |
| error_at_line (&lexer_line, |
| "special `tree_exp' must be applied to an array"); |
| return &string_type; |
| } |
| |
| nodot = create_string_option (NULL, "dot", ""); |
| |
| flds = create_field (NULL, t, ""); |
| flds->opt = create_string_option (nodot, "length", |
| "TREE_OPERAND_LENGTH ((tree) &%0)"); |
| flds->opt = create_string_option (flds->opt, "default", ""); |
| |
| return new_structure ("tree_exp_subunion", TYPE_UNION, &lexer_line, flds, |
| nodot, NULL); |
| } |
| |
| /* Perform any special processing on a type T, about to become the type |
| of a field. Return the appropriate type for the field. |
| At present: |
| - Converts pointer-to-char, with no length parameter, to TYPE_STRING; |
| - Similarly for arrays of pointer-to-char; |
| - Converts structures for which a parameter is provided to |
| TYPE_PARAM_STRUCT; |
| - Handles "special" options. |
| */ |
| |
| type_p |
| adjust_field_type (type_p t, options_p opt) |
| { |
| int length_p = 0; |
| const int pointer_p = t->kind == TYPE_POINTER; |
| |
| for (; opt; opt = opt->next) |
| if (strcmp (opt->name, "length") == 0) |
| { |
| if (length_p) |
| error_at_line (&lexer_line, "duplicate `%s' option", opt->name); |
| if (t->u.p->kind == TYPE_SCALAR || t->u.p->kind == TYPE_STRING) |
| { |
| error_at_line (&lexer_line, |
| "option `%s' may not be applied to " |
| "arrays of atomic types", opt->name); |
| } |
| length_p = 1; |
| } |
| else if (strcmp (opt->name, "special") == 0 |
| && opt->kind == OPTION_STRING) |
| { |
| const char *special_name = opt->info.string; |
| if (strcmp (special_name, "tree_exp") == 0) |
| t = adjust_field_tree_exp (t, opt); |
| else if (strcmp (special_name, "rtx_def") == 0) |
| t = adjust_field_rtx_def (t, opt); |
| else |
| error_at_line (&lexer_line, "unknown special `%s'", special_name); |
| } |
| |
| if (!length_p |
| && pointer_p && t->u.p->kind == TYPE_SCALAR && t->u.p->u.scalar_is_char) |
| return &string_type; |
| if (t->kind == TYPE_ARRAY && t->u.a.p->kind == TYPE_POINTER |
| && t->u.a.p->u.p->kind == TYPE_SCALAR |
| && t->u.a.p->u.p->u.scalar_is_char) |
| return create_array (&string_type, t->u.a.len); |
| |
| return t; |
| } |
| |
| |
| static void set_gc_used_type (type_p, enum gc_used_enum, bool = false); |
| static void set_gc_used (pair_p); |
| |
| /* Handle OPT for set_gc_used_type. */ |
| |
| static void |
| process_gc_options (options_p opt, enum gc_used_enum level, int *maybe_undef, |
| int *length, int *skip, type_p *nested_ptr) |
| { |
| options_p o; |
| for (o = opt; o; o = o->next) |
| if (strcmp (o->name, "ptr_alias") == 0 && level == GC_POINTED_TO |
| && o->kind == OPTION_TYPE) |
| set_gc_used_type (o->info.type, |
| GC_POINTED_TO); |
| else if (strcmp (o->name, "maybe_undef") == 0) |
| *maybe_undef = 1; |
| else if (strcmp (o->name, "length") == 0) |
| *length = 1; |
| else if (strcmp (o->name, "skip") == 0) |
| *skip = 1; |
| else if (strcmp (o->name, "nested_ptr") == 0 |
| && o->kind == OPTION_NESTED) |
| *nested_ptr = ((const struct nested_ptr_data *) o->info.nested)->type; |
| } |
| |
| |
| /* Set the gc_used field of T to LEVEL, and handle the types it references. |
| |
| If ALLOWED_UNDEFINED_TYPES is true, types of kind TYPE_UNDEFINED |
| are set to GC_UNUSED. Otherwise, an error is emitted for |
| TYPE_UNDEFINED types. This is used to support user-defined |
| template types with non-type arguments. |
| |
| For instance, when we parse a template type with enum arguments |
| (e.g. MyType<AnotherType, EnumValue>), the parser created two |
| artificial fields for 'MyType', one for 'AnotherType', the other |
| one for 'EnumValue'. |
| |
| At the time that we parse this type we don't know that 'EnumValue' |
| is really an enum value, so the parser creates a TYPE_UNDEFINED |
| type for it. Since 'EnumValue' is never resolved to a known |
| structure, it will stay with TYPE_UNDEFINED. |
| |
| Since 'MyType' is a TYPE_USER_STRUCT, we can simply ignore |
| 'EnumValue'. Generating marking code for it would cause |
| compilation failures since the marking routines assumes that |
| 'EnumValue' is a type. */ |
| |
| static void |
| set_gc_used_type (type_p t, enum gc_used_enum level, |
| bool allow_undefined_types) |
| { |
| if (t->gc_used >= level) |
| return; |
| |
| t->gc_used = level; |
| |
| switch (t->kind) |
| { |
| case TYPE_STRUCT: |
| case TYPE_UNION: |
| case TYPE_USER_STRUCT: |
| { |
| pair_p f; |
| int dummy; |
| type_p dummy2; |
| bool allow_undefined_field_types = (t->kind == TYPE_USER_STRUCT); |
| |
| process_gc_options (t->u.s.opt, level, &dummy, &dummy, &dummy, |
| &dummy2); |
| |
| if (t->u.s.base_class) |
| set_gc_used_type (t->u.s.base_class, level, allow_undefined_types); |
| /* Anything pointing to a base class might actually be pointing |
| to a subclass. */ |
| for (type_p subclass = t->u.s.first_subclass; subclass; |
| subclass = subclass->u.s.next_sibling_class) |
| set_gc_used_type (subclass, level, allow_undefined_types); |
| |
| FOR_ALL_INHERITED_FIELDS(t, f) |
| { |
| int maybe_undef = 0; |
| int length = 0; |
| int skip = 0; |
| type_p nested_ptr = NULL; |
| process_gc_options (f->opt, level, &maybe_undef, &length, &skip, |
| &nested_ptr); |
| |
| if (nested_ptr && f->type->kind == TYPE_POINTER) |
| set_gc_used_type (nested_ptr, GC_POINTED_TO); |
| else if (length && f->type->kind == TYPE_POINTER) |
| set_gc_used_type (f->type->u.p, GC_USED); |
| else if (maybe_undef && f->type->kind == TYPE_POINTER) |
| set_gc_used_type (f->type->u.p, GC_MAYBE_POINTED_TO); |
| else if (skip) |
| ; /* target type is not used through this field */ |
| else |
| set_gc_used_type (f->type, GC_USED, allow_undefined_field_types); |
| } |
| break; |
| } |
| |
| case TYPE_UNDEFINED: |
| if (level > GC_UNUSED) |
| { |
| if (!allow_undefined_types) |
| error_at_line (&t->u.s.line, "undefined type `%s'", t->u.s.tag); |
| t->gc_used = GC_UNUSED; |
| } |
| break; |
| |
| case TYPE_POINTER: |
| set_gc_used_type (t->u.p, GC_POINTED_TO); |
| break; |
| |
| case TYPE_ARRAY: |
| set_gc_used_type (t->u.a.p, GC_USED); |
| break; |
| |
| case TYPE_LANG_STRUCT: |
| for (t = t->u.s.lang_struct; t; t = t->next) |
| set_gc_used_type (t, level); |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| /* Set the gc_used fields of all the types pointed to by VARIABLES. */ |
| |
| static void |
| set_gc_used (pair_p variables) |
| { |
| int nbvars = 0; |
| pair_p p; |
| for (p = variables; p; p = p->next) |
| { |
| set_gc_used_type (p->type, GC_USED); |
| nbvars++; |
| }; |
| if (verbosity_level >= 2) |
| printf ("%s used %d GTY-ed variables\n", progname, nbvars); |
| } |
| |
| /* File mapping routines. For each input file, there is one output .c file |
| (but some output files have many input files), and there is one .h file |
| for the whole build. */ |
| |
| /* Output file handling. */ |
| |
| /* Create and return an outf_p for a new file for NAME, to be called |
| ONAME. */ |
| |
| static outf_p |
| create_file (const char *name, const char *oname) |
| { |
| static const char *const hdr[] = { |
| " Copyright (C) 2004-2021 Free Software Foundation, Inc.\n", |
| "\n", |
| "This file is part of GCC.\n", |
| "\n", |
| "GCC is free software; you can redistribute it and/or modify it under\n", |
| "the terms of the GNU General Public License as published by the Free\n", |
| "Software Foundation; either version 3, or (at your option) any later\n", |
| "version.\n", |
| "\n", |
| "GCC is distributed in the hope that it will be useful, but WITHOUT ANY\n", |
| "WARRANTY; without even the implied warranty of MERCHANTABILITY or\n", |
| "FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License\n", |
| "for more details.\n", |
| "\n", |
| "You should have received a copy of the GNU General Public License\n", |
| "along with GCC; see the file COPYING3. If not see\n", |
| "<http://www.gnu.org/licenses/>. */\n", |
| "\n", |
| "/* This file is machine generated. Do not edit. */\n" |
| }; |
| outf_p f; |
| size_t i; |
| |
| gcc_assert (name != NULL); |
| gcc_assert (oname != NULL); |
| f = XCNEW (struct outf); |
| f->next = output_files; |
| f->name = oname; |
| output_files = f; |
| |
| oprintf (f, "/* Type information for %s.\n", name); |
| for (i = 0; i < ARRAY_SIZE (hdr); i++) |
| oprintf (f, "%s", hdr[i]); |
| return f; |
| } |
| |
| /* Print, like fprintf, to O. |
| N.B. You might think this could be implemented more efficiently |
| with vsnprintf(). Unfortunately, there are C libraries that |
| provide that function but without the C99 semantics for its return |
| value, making it impossible to know how much space is required. */ |
| void |
| oprintf (outf_p o, const char *format, ...) |
| { |
| char *s; |
| size_t slength; |
| va_list ap; |
| |
| /* In plugin mode, the O could be a NULL pointer, so avoid crashing |
| in that case. */ |
| if (!o) |
| return; |
| |
| va_start (ap, format); |
| slength = vasprintf (&s, format, ap); |
| if (s == NULL || (int) slength < 0) |
| fatal ("out of memory"); |
| va_end (ap); |
| |
| if (o->bufused + slength > o->buflength) |
| { |
| size_t new_len = o->buflength; |
| if (new_len == 0) |
| new_len = 1024; |
| do |
| { |
| new_len *= 2; |
| } |
| while (o->bufused + slength >= new_len); |
| o->buf = XRESIZEVEC (char, o->buf, new_len); |
| o->buflength = new_len; |
| } |
| memcpy (o->buf + o->bufused, s, slength); |
| o->bufused += slength; |
| free (s); |
| } |
| |
| /* Open the global header file and the language-specific header files. */ |
| |
| static void |
| open_base_files (void) |
| { |
| size_t i; |
| |
| if (nb_plugin_files > 0 && plugin_files) |
| return; |
| |
| header_file = create_file ("GCC", "gtype-desc.h"); |
| |
| base_files = XNEWVEC (outf_p, num_lang_dirs); |
| |
| for (i = 0; i < num_lang_dirs; i++) |
| base_files[i] = create_file (lang_dir_names[i], |
| xasprintf ("gtype-%s.h", lang_dir_names[i])); |
| |
| /* gtype-desc.c is a little special, so we create it here. */ |
| { |
| /* The order of files here matters very much. */ |
| static const char *const ifiles[] = { |
| "config.h", "system.h", "coretypes.h", |
| "backend.h", "predict.h", "tree.h", |
| "rtl.h", "gimple.h", "fold-const.h", "insn-codes.h", "splay-tree.h", |
| "alias.h", "insn-config.h", "flags.h", "expmed.h", "dojump.h", |
| "explow.h", "calls.h", "memmodel.h", "emit-rtl.h", "varasm.h", |
| "stmt.h", "expr.h", "alloc-pool.h", "cselib.h", "insn-addr.h", |
| "optabs.h", "libfuncs.h", "debug.h", "internal-fn.h", "gimple-fold.h", |
| "value-range.h", |
| "tree-eh.h", "gimple-iterator.h", "gimple-ssa.h", "tree-cfg.h", |
| "tree-vrp.h", "tree-phinodes.h", "ssa-iterators.h", "stringpool.h", |
| "tree-ssanames.h", "tree-ssa-loop.h", "tree-ssa-loop-ivopts.h", |
| "tree-ssa-loop-manip.h", "tree-ssa-loop-niter.h", "tree-into-ssa.h", |
| "tree-dfa.h", "tree-ssa.h", "reload.h", "cpplib.h", "tree-chrec.h", |
| "except.h", "output.h", "cfgloop.h", "target.h", "lto-streamer.h", |
| "target-globals.h", "ipa-ref.h", "cgraph.h", "symbol-summary.h", |
| "ipa-prop.h", "ipa-fnsummary.h", "dwarf2out.h", "omp-general.h", |
| "omp-offload.h", "ipa-modref-tree.h", "ipa-modref.h", "symtab-thunks.h", |
| "symtab-clones.h", "diagnostic-spec.h", "ctfc.h", |
| NULL |
| }; |
| const char *const *ifp; |
| outf_p gtype_desc_c; |
| |
| gtype_desc_c = create_file ("GCC", "gtype-desc.c"); |
| for (ifp = ifiles; *ifp; ifp++) |
| oprintf (gtype_desc_c, "#include \"%s\"\n", *ifp); |
| for (int j = 0; j < (int) num_build_headers; j++) |
| oprintf (gtype_desc_c, "#include \"%s\"\n", build_headers[j]); |
| |
| /* Make sure we handle "cfun" specially. */ |
| oprintf (gtype_desc_c, "\n/* See definition in function.h. */\n"); |
| oprintf (gtype_desc_c, "#undef cfun\n"); |
| |
| oprintf (gtype_desc_c, |
| "\n" |
| "/* Types with a \"gcc::\" namespace have it stripped\n" |
| " during gengtype parsing. Provide a \"using\" directive\n" |
| " to ensure that the fully-qualified types are found. */\n" |
| "using namespace gcc;\n"); |
| } |
| } |
| |
| /* For INPF an input file, return the real basename of INPF, with all |
| the directory components skipped. */ |
| |
| static const char * |
| get_file_realbasename (const input_file *inpf) |
| { |
| return lbasename (get_input_file_name (inpf)); |
| } |
| |
| /* For INPF a filename, return the relative path to INPF from |
| $(srcdir) if the latter is a prefix in INPF, NULL otherwise. */ |
| |
| const char * |
| get_file_srcdir_relative_path (const input_file *inpf) |
| { |
| const char *f = get_input_file_name (inpf); |
| if (strlen (f) > srcdir_len |
| && IS_DIR_SEPARATOR (f[srcdir_len]) |
| && strncmp (f, srcdir, srcdir_len) == 0) |
| return f + srcdir_len + 1; |
| else |
| return NULL; |
| } |
| |
| /* For INPF an input_file, return the relative path to INPF from |
| $(srcdir) if the latter is a prefix in INPF, or the real basename |
| of INPF otherwise. */ |
| |
| static const char * |
| get_file_basename (const input_file *inpf) |
| { |
| const char *srcdir_path = get_file_srcdir_relative_path (inpf); |
| |
| return (srcdir_path != NULL) ? srcdir_path : get_file_realbasename (inpf); |
| } |
| |
| /* For F a filename, return the lang_dir_names relative index of the language |
| directory that is a prefix in F, if any, -1 otherwise. */ |
| |
| static int |
| get_prefix_langdir_index (const char *f) |
| { |
| size_t f_len = strlen (f); |
| size_t lang_index; |
| |
| for (lang_index = 0; lang_index < num_lang_dirs; lang_index++) |
| { |
| const char *langdir = lang_dir_names[lang_index]; |
| size_t langdir_len = strlen (langdir); |
| |
| if (f_len > langdir_len |
| && IS_DIR_SEPARATOR (f[langdir_len]) |
| && memcmp (f, langdir, langdir_len) == 0) |
| return lang_index; |
| } |
| |
| return -1; |
| } |
| |
| /* For INPF an input file, return the name of language directory where |
| F is located, if any, NULL otherwise. */ |
| |
| static const char * |
| get_file_langdir (const input_file *inpf) |
| { |
| /* Get the relative path to INPF from $(srcdir) and find the |
| language by comparing the prefix with language directory names. |
| If INPF is not even srcdir relative, no point in looking |
| further. */ |
| |
| int lang_index; |
| const char *srcdir_relative_path = get_file_srcdir_relative_path (inpf); |
| const char *r; |
| |
| if (!srcdir_relative_path) |
| return NULL; |
| |
| lang_index = get_prefix_langdir_index (srcdir_relative_path); |
| if (lang_index < 0 && startswith (srcdir_relative_path, "c-family")) |
| r = "c-family"; |
| else if (lang_index >= 0) |
| r = lang_dir_names[lang_index]; |
| else |
| r = NULL; |
| |
| return r; |
| } |
| |
| /* The gt- output file name for INPF. */ |
| |
| static const char * |
| get_file_gtfilename (const input_file *inpf) |
| { |
| /* Cook up an initial version of the gt- file name from the file real |
| basename and the language name, if any. */ |
| |
| const char *basename = get_file_realbasename (inpf); |
| const char *langdir = get_file_langdir (inpf); |
| |
| char *result = |
| (langdir ? xasprintf ("gt-%s-%s", langdir, basename) |
| : xasprintf ("gt-%s", basename)); |
| |
| /* Then replace all non alphanumerics characters by '-' and change the |
| extension to ".h". We expect the input filename extension was at least |
| one character long. */ |
| |
| char *s = result; |
| |
| for (; *s != '.'; s++) |
| if (!ISALNUM (*s) && *s != '-') |
| *s = '-'; |
| |
| memcpy (s, ".h", sizeof (".h")); |
| |
| return result; |
| } |
| |
| /* Each input_file has its associated output file outf_p. The |
| association is computed by the function |
| get_output_file_with_visibility. The associated file is cached |
| inside input_file in its inpoutf field, so is really computed only |
| once. Associated output file paths (i.e. output_name-s) are |
| computed by a rule based regexp machinery, using the files_rules |
| array of struct file_rule_st. A for_name is also computed, giving |
| the source file name for which the output_file is generated; it is |
| often the last component of the input_file path. */ |
| |
| |
| /* |
| Regexpr machinery to compute the output_name and for_name-s of each |
| input_file. We have a sequence of file rules which gives the POSIX |
| extended regular expression to match an input file path, and two |
| transformed strings for the corresponding output_name and the |
| corresponding for_name. The transformed string contain dollars: $0 |
| is replaced by the entire match, $1 is replaced by the substring |
| matching the first parenthesis in the regexp, etc. And $$ is replaced |
| by a single verbatim dollar. The rule order is important. The |
| general case is last, and the particular cases should come before. |
| An action routine can, when needed, update the out_name & for_name |
| and/or return the appropriate output file. It is invoked only when a |
| rule is triggered. When a rule is triggered, the output_name and |
| for_name are computed using their transform string in while $$, $0, |
| $1, ... are suitably replaced. If there is an action, it is called. |
| In some few cases, the action can directly return the outf_p, but |
| usually it just updates the output_name and for_name so should free |
| them before replacing them. The get_output_file_with_visibility |
| function creates an outf_p only once per each output_name, so it |
| scans the output_files list for previously seen output file names. |
| */ |
| |
| /* Signature of actions in file rules. */ |
| typedef outf_p (frul_actionrout_t) (input_file*, char**, char**); |
| |
| |
| struct file_rule_st { |
| const char* frul_srcexpr; /* Source string for regexp. */ |
| int frul_rflags; /* Flags passed to regcomp, usually |
| * REG_EXTENDED. */ |
| regex_t* frul_re; /* Compiled regular expression |
| obtained by regcomp. */ |
| const char* frul_tr_out; /* Transformation string for making |
| * the output_name, with $1 ... $9 for |
| * subpatterns and $0 for the whole |
| * matched filename. */ |
| const char* frul_tr_for; /* Tranformation string for making the |
| for_name. */ |
| frul_actionrout_t* frul_action; /* The action, if non null, is |
| * called once the rule matches, on |
| * the transformed out_name & |
| * for_name. It could change them |
| * and/or give the output file. */ |
| }; |
| |
| /* File rule action handling *.h files. */ |
| static outf_p header_dot_h_frul (input_file*, char**, char**); |
| |
| /* File rule action handling *.c files. */ |
| static outf_p source_dot_c_frul (input_file*, char**, char**); |
| |
| #define NULL_REGEX (regex_t*)0 |
| |
| /* The prefix in our regexp-s matching the directory. */ |
| #define DIR_PREFIX_REGEX "^(([^/]*/)*)" |
| |
| #define NULL_FRULACT (frul_actionrout_t*)0 |
| |
| /* The array of our rules governing file name generation. Rules order |
| matters, so change with extreme care! */ |
| |
| struct file_rule_st files_rules[] = { |
| /* The general rule assumes that files in subdirectories belong to a |
| particular front-end, and files not in subdirectories are shared. |
| The following rules deal with exceptions - files that are in |
| subdirectories and yet are shared, and files that are top-level, |
| but are not shared. */ |
| |
| /* the c-family/ source directory is special. */ |
| { DIR_PREFIX_REGEX "c-family/([[:alnum:]_-]*)\\.c$", |
| REG_EXTENDED, NULL_REGEX, |
| "gt-c-family-$3.h", "c-family/$3.c", NULL_FRULACT}, |
| |
| { DIR_PREFIX_REGEX "c-family/([[:alnum:]_-]*)\\.h$", |
| REG_EXTENDED, NULL_REGEX, |
| "gt-c-family-$3.h", "c-family/$3.h", NULL_FRULACT}, |
| |
| /* Both c-lang.h & c-tree.h gives gt-c-c-decl.h for c-decl.c ! */ |
| { DIR_PREFIX_REGEX "c/c-lang\\.h$", |
| REG_EXTENDED, NULL_REGEX, "gt-c-c-decl.h", "c/c-decl.c", NULL_FRULACT}, |
| |
| { DIR_PREFIX_REGEX "c/c-tree\\.h$", |
| REG_EXTENDED, NULL_REGEX, "gt-c-c-decl.h", "c/c-decl.c", NULL_FRULACT}, |
| |
| /* cp/cp-tree.h gives gt-cp-tree.h for cp/tree.c ! */ |
| { DIR_PREFIX_REGEX "cp/cp-tree\\.h$", |
| REG_EXTENDED, NULL_REGEX, |
| "gt-cp-tree.h", "cp/tree.c", NULL_FRULACT }, |
| |
| /* cp/decl.h & cp/decl.c gives gt-cp-decl.h for cp/decl.c ! */ |
| { DIR_PREFIX_REGEX "cp/decl\\.[ch]$", |
| REG_EXTENDED, NULL_REGEX, |
| "gt-cp-decl.h", "cp/decl.c", NULL_FRULACT }, |
| |
| /* cp/name-lookup.h gives gt-cp-name-lookup.h for cp/name-lookup.c ! */ |
| { DIR_PREFIX_REGEX "cp/name-lookup\\.h$", |
| REG_EXTENDED, NULL_REGEX, |
| "gt-cp-name-lookup.h", "cp/name-lookup.c", NULL_FRULACT }, |
| |
| /* cp/parser.h gives gt-cp-parser.h for cp/parser.c ! */ |
| { DIR_PREFIX_REGEX "cp/parser\\.h$", |
| REG_EXTENDED, NULL_REGEX, |
| "gt-cp-parser.h", "cp/parser.c", NULL_FRULACT }, |
| |
| /* objc/objc-act.h gives gt-objc-objc-act.h for objc/objc-act.c ! */ |
| { DIR_PREFIX_REGEX "objc/objc-act\\.h$", |
| REG_EXTENDED, NULL_REGEX, |
| "gt-objc-objc-act.h", "objc/objc-act.c", NULL_FRULACT }, |
| |
| /* objc/objc-map.h gives gt-objc-objc-map.h for objc/objc-map.c ! */ |
| { DIR_PREFIX_REGEX "objc/objc-map\\.h$", |
| REG_EXTENDED, NULL_REGEX, |
| "gt-objc-objc-map.h", "objc/objc-map.c", NULL_FRULACT }, |
| |
| /* General cases. For header *.h and source *.c or *.cc files, we |
| * need special actions to handle the language. */ |
| |
| /* Source *.c files are using get_file_gtfilename to compute their |
| output_name and get_file_basename to compute their for_name |
| through the source_dot_c_frul action. */ |
| { DIR_PREFIX_REGEX "([[:alnum:]_-]*)\\.c$", |
| REG_EXTENDED, NULL_REGEX, "gt-$3.h", "$3.c", source_dot_c_frul}, |
| |
| /* Source *.cc files are using get_file_gtfilename to compute their |
| output_name and get_file_basename to compute their for_name |
| through the source_dot_c_frul action. */ |
| { DIR_PREFIX_REGEX "([[:alnum:]_-]*)\\.cc$", |
| REG_EXTENDED, NULL_REGEX, "gt-$3.h", "$3.cc", source_dot_c_frul}, |
| |
| /* Common header files get "gtype-desc.c" as their output_name, |
| * while language specific header files are handled specially. So |
| * we need the header_dot_h_frul action. */ |
| { DIR_PREFIX_REGEX "([[:alnum:]_-]*)\\.h$", |
| REG_EXTENDED, NULL_REGEX, "gt-$3.h", "$3.h", header_dot_h_frul}, |
| |
| { DIR_PREFIX_REGEX "([[:alnum:]_-]*)\\.in$", |
| REG_EXTENDED, NULL_REGEX, "gt-$3.h", "$3.in", NULL_FRULACT}, |
| |
| /* Mandatory null last entry signaling end of rules. */ |
| {NULL, 0, NULL_REGEX, NULL, NULL, NULL_FRULACT} |
| }; |
| |
| /* Special file rules action for handling *.h header files. It gives |
| "gtype-desc.c" for common headers and corresponding output |
| files for language-specific header files. */ |
| static outf_p |
| header_dot_h_frul (input_file* inpf, char**poutname, |
| char**pforname ATTRIBUTE_UNUSED) |
| { |
| const char *basename = 0; |
| int lang_index = 0; |
| DBGPRINTF ("inpf %p inpname %s outname %s forname %s", |
| (void*) inpf, get_input_file_name (inpf), |
| *poutname, *pforname); |
| basename = get_file_basename (inpf); |
| lang_index = get_prefix_langdir_index (basename); |
| DBGPRINTF ("basename %s lang_index %d", basename, lang_index); |
| |
| if (lang_index >= 0) |
| { |
| /* The header is language specific. Given output_name & |
| for_name remains unchanged. The base_files array gives the |
| outf_p. */ |
| DBGPRINTF ("header_dot_h found language specific @ %p '%s'", |
| (void*) base_files[lang_index], |
| (base_files[lang_index])->name); |
| return base_files[lang_index]; |
| } |
| else |
| { |
| /* The header is common to all front-end languages. So |
| output_name is "gtype-desc.c" file. The calling function |
| get_output_file_with_visibility will find its outf_p. */ |
| free (*poutname); |
| *poutname = xstrdup ("gtype-desc.c"); |
| DBGPRINTF ("special 'gtype-desc.c' for inpname %s", |
| get_input_file_name (inpf)); |
| return NULL; |
| } |
| } |
| |
| |
| /* Special file rules action for handling *.c source files using |
| * get_file_gtfilename to compute their output_name and |
| * get_file_basename to compute their for_name. The output_name is |
| * gt-<LANG>-<BASE>.h for language specific source files, and |
| * gt-<BASE>.h for common source files. */ |
| static outf_p |
| source_dot_c_frul (input_file* inpf, char**poutname, char**pforname) |
| { |
| char *newbasename = CONST_CAST (char*, get_file_basename (inpf)); |
| char *newoutname = CONST_CAST (char*, get_file_gtfilename (inpf)); |
| DBGPRINTF ("inpf %p inpname %s original outname %s forname %s", |
| (void*) inpf, get_input_file_name (inpf), |
| *poutname, *pforname); |
| DBGPRINTF ("newoutname %s", newoutname); |
| DBGPRINTF ("newbasename %s", newbasename); |
| free (*poutname); |
| free (*pforname); |
| *poutname = newoutname; |
| *pforname = newbasename; |
| return NULL; |
| } |
| |
| /* Utility function for get_output_file_with_visibility which returns |
| * a malloc-ed substituted string using TRS on matching of the FILNAM |
| * file name, using the PMATCH array. */ |
| static char* |
| matching_file_name_substitute (const char *filnam, regmatch_t pmatch[10], |
| const char *trs) |
| { |
| struct obstack str_obstack; |
| char *str = NULL; |
| char *rawstr = NULL; |
| const char *pt = NULL; |
| DBGPRINTF ("filnam %s", filnam); |
| obstack_init (&str_obstack); |
| for (pt = trs; *pt; pt++) { |
| char c = *pt; |
| if (c == '$') |
| { |
| if (pt[1] == '$') |
| { |
| /* A double dollar $$ is substituted by a single verbatim |
| dollar, but who really uses dollar signs in file |
| paths? */ |
| obstack_1grow (&str_obstack, '$'); |
| } |
| else if (ISDIGIT (pt[1])) |
| { |
| /* Handle $0 $1 ... $9 by appropriate substitution. */ |
| int dolnum = pt[1] - '0'; |
| int so = pmatch[dolnum].rm_so; |
| int eo = pmatch[dolnum].rm_eo; |
| DBGPRINTF ("so=%d eo=%d dolnum=%d", so, eo, dolnum); |
| if (so>=0 && eo>=so) |
| obstack_grow (&str_obstack, filnam + so, eo - so); |
| } |
| else |
| { |
| /* This can happen only when files_rules is buggy! */ |
| gcc_unreachable (); |
| } |
| /* Always skip the character after the dollar. */ |
| pt++; |
| } |
| else |
| obstack_1grow (&str_obstack, c); |
| } |
| obstack_1grow (&str_obstack, '\0'); |
| rawstr = XOBFINISH (&str_obstack, char *); |
| str = xstrdup (rawstr); |
| obstack_free (&str_obstack, NULL); |
| DBGPRINTF ("matched replacement %s", str); |
| rawstr = NULL; |
| return str; |
| } |
| |
| |
| /* An output file, suitable for definitions, that can see declarations |
| made in INPF and is linked into every language that uses INPF. |
| Since the result is cached inside INPF, that argument cannot be |
| declared constant, but is "almost" constant. */ |
| |
| outf_p |
| get_output_file_with_visibility (input_file *inpf) |
| { |
| outf_p r; |
| char *for_name = NULL; |
| char *output_name = NULL; |
| const char* inpfname; |
| |
| /* This can happen when we need a file with visibility on a |
| structure that we've never seen. We have to just hope that it's |
| globally visible. */ |
| if (inpf == NULL) |
| inpf = system_h_file; |
| |
| /* The result is cached in INPF, so return it if already known. */ |
| if (inpf->inpoutf) |
| return inpf->inpoutf; |
| |
| /* In plugin mode, return NULL unless the input_file is one of the |
| plugin_files. */ |
| if (plugin_files) |
| { |
| size_t i; |
| for (i = 0; i < nb_plugin_files; i++) |
| if (inpf == plugin_files[i]) |
| { |
| inpf->inpoutf = plugin_output; |
| return plugin_output; |
| } |
| |
| return NULL; |
| } |
| |
| inpfname = get_input_file_name (inpf); |
| |
| /* Try each rule in sequence in files_rules until one is triggered. */ |
| { |
| int rulix = 0; |
| DBGPRINTF ("passing input file @ %p named %s through the files_rules", |
| (void*) inpf, inpfname); |
| |
| for (; files_rules[rulix].frul_srcexpr != NULL; rulix++) |
| { |
| DBGPRINTF ("rulix#%d srcexpr %s", |
| rulix, files_rules[rulix].frul_srcexpr); |
| |
| if (!files_rules[rulix].frul_re) |
| { |
| /* Compile the regexpr lazily. */ |
| int err = 0; |
| files_rules[rulix].frul_re = XCNEW (regex_t); |
| err = regcomp (files_rules[rulix].frul_re, |
| files_rules[rulix].frul_srcexpr, |
| files_rules[rulix].frul_rflags); |
| if (err) |
| { |
| /* The regular expression compilation fails only when |
| file_rules is buggy. */ |
| gcc_unreachable (); |
| } |
| } |
| |
| output_name = NULL; |
| for_name = NULL; |
| |
| /* Match the regexpr and trigger the rule if matched. */ |
| { |
| /* We have exactly ten pmatch-s, one for each $0, $1, $2, |
| $3, ... $9. */ |
| regmatch_t pmatch[10]; |
| memset (pmatch, 0, sizeof (pmatch)); |
| if (!regexec (files_rules[rulix].frul_re, |
| inpfname, 10, pmatch, 0)) |
| { |
| DBGPRINTF ("input @ %p filename %s matched rulix#%d pattern %s", |
| (void*) inpf, inpfname, rulix, |
| files_rules[rulix].frul_srcexpr); |
| for_name = |
| matching_file_name_substitute (inpfname, pmatch, |
| files_rules[rulix].frul_tr_for); |
| DBGPRINTF ("for_name %s", for_name); |
| output_name = |
| matching_file_name_substitute (inpfname, pmatch, |
| files_rules[rulix].frul_tr_out); |
| DBGPRINTF ("output_name %s", output_name); |
| if (files_rules[rulix].frul_action) |
| { |
| /* Invoke our action routine. */ |
| outf_p of = NULL; |
| DBGPRINTF ("before action rulix#%d output_name %s for_name %s", |
| rulix, output_name, for_name); |
| of = |
| (files_rules[rulix].frul_action) (inpf, |
| &output_name, &for_name); |
| DBGPRINTF ("after action rulix#%d of=%p output_name %s for_name %s", |
| rulix, (void*)of, output_name, for_name); |
| /* If the action routine returned something, give it back |
| immediately and cache it in inpf. */ |
| if (of) |
| { |
| inpf->inpoutf = of; |
| return of; |
| } |
| } |
| /* The rule matched, and had no action, or that action did |
| not return any output file but could have changed the |
| output_name or for_name. We break out of the loop on the |
| files_rules. */ |
| break; |
| } |
| else |
| { |
| /* The regexpr did not match. */ |
| DBGPRINTF ("rulix#%d did not match %s pattern %s", |
| rulix, inpfname, files_rules[rulix].frul_srcexpr); |
| continue; |
| } |
| } |
| } |
| } |
| if (!output_name || !for_name) |
| { |
| /* This should not be possible, and could only happen if the |
| files_rules is incomplete or buggy. */ |
| fatal ("failed to compute output name for %s", inpfname); |
| } |
| |
| /* Look through to see if we've ever seen this output filename |
| before. If found, cache the result in inpf. */ |
| for (r = output_files; r; r = r->next) |
| if (filename_cmp (r->name, output_name) == 0) |
| { |
| inpf->inpoutf = r; |
| DBGPRINTF ("found r @ %p for output_name %s for_name %s", (void*)r, |
| output_name, for_name); |
| return r; |
| } |
| |
| /* If not found, create it, and cache it in inpf. */ |
| r = create_file (for_name, output_name); |
| |
| gcc_assert (r && r->name); |
| DBGPRINTF ("created r @ %p for output_name %s for_name %s", (void*) r, |
| output_name, for_name); |
| inpf->inpoutf = r; |
| return r; |
| |
| |
| } |
| |
| /* The name of an output file, suitable for definitions, that can see |
| declarations made in INPF and is linked into every language that |
| uses INPF. */ |
| |
| const char * |
| get_output_file_name (input_file* inpf) |
| { |
| outf_p o = get_output_file_with_visibility (inpf); |
| if (o) |
| return o->name; |
| return NULL; |
| } |
| |
| /* Check if existing file is equal to the in memory buffer. */ |
| |
| static bool |
| is_file_equal (outf_p of) |
| { |
| FILE *newfile = fopen (of->name, "r"); |
| size_t i; |
| bool equal; |
| if (newfile == NULL) |
| return false; |
| |
| equal = true; |
| for (i = 0; i < of->bufused; i++) |
| { |
| int ch; |
| ch = fgetc (newfile); |
| if (ch == EOF || ch != (unsigned char) of->buf[i]) |
| { |
| equal = false; |
| break; |
| } |
| } |
| if (equal && EOF != fgetc (newfile)) |
| equal = false; |
| fclose (newfile); |
| return equal; |
| } |
| |
| /* Copy the output to its final destination, |
| but don't unnecessarily change modification times. */ |
| |
| static void |
| close_output_files (void) |
| { |
| int nbwrittenfiles = 0; |
| outf_p of; |
| |
| for (of = output_files; of; of = of->next) |
| { |
| if (!is_file_equal (of)) |
| { |
| FILE *newfile = NULL; |
| char *backupname = NULL; |
| /* Back up the old version of the output file gt-FOO.c as |
| BACKUPDIR/gt-FOO.c~ if we have a backup directory. */ |
| if (backup_dir) |
| { |
| backupname = concat (backup_dir, "/", |
| lbasename (of->name), "~", NULL); |
| if (!access (of->name, F_OK) && rename (of->name, backupname)) |
| fatal ("failed to back up %s as %s: %s", |
| of->name, backupname, xstrerror (errno)); |
| } |
| |
| newfile = fopen (of->name, "w"); |
| if (newfile == NULL) |
| fatal ("opening output file %s: %s", of->name, xstrerror (errno)); |
| if (fwrite (of->buf, 1, of->bufused, newfile) != of->bufused) |
| fatal ("writing output file %s: %s", of->name, xstrerror (errno)); |
| if (fclose (newfile) != 0) |
| fatal ("closing output file %s: %s", of->name, xstrerror (errno)); |
| nbwrittenfiles++; |
| if (verbosity_level >= 2 && backupname) |
| printf ("%s wrote #%-3d %s backed-up in %s\n", |
| progname, nbwrittenfiles, of->name, backupname); |
| else if (verbosity_level >= 1) |
| printf ("%s write #%-3d %s\n", progname, nbwrittenfiles, of->name); |
| free (backupname); |
| } |
| else |
| { |
| /* output file remains unchanged. */ |
| if (verbosity_level >= 2) |
| printf ("%s keep %s\n", progname, of->name); |
| } |
| free (of->buf); |
| of->buf = NULL; |
| of->bufused = of->buflength = 0; |
| } |
| if (verbosity_level >= 1) |
| printf ("%s wrote %d files.\n", progname, nbwrittenfiles); |
| } |
| |
| struct flist |
| { |
| struct flist *next; |
| int started_p; |
| const input_file* file; |
| outf_p f; |
| }; |
| |
| struct walk_type_data; |
| |
| /* For scalars and strings, given the item in 'val'. |
| For structures, given a pointer to the item in 'val'. |
| For misc. pointers, given the item in 'val'. |
| */ |
| typedef void (*process_field_fn) (type_p f, const struct walk_type_data * p); |
| typedef void (*func_name_fn) (type_p s, const struct walk_type_data * p); |
| |
| /* Parameters for write_types. */ |
| |
| struct write_types_data |
| { |
| const char *prefix; |
| const char *param_prefix; |
| const char *subfield_marker_routine; |
| const char *marker_routine; |
| const char *reorder_note_routine; |
| const char *comment; |
| enum write_types_kinds kind; |
| }; |
| |
| static void output_escaped_param (struct walk_type_data *d, |
| const char *, const char *); |
| static void output_mangled_typename (outf_p, const_type_p); |
| static void walk_type (type_p t, struct walk_type_data *d); |
| static void write_func_for_structure (type_p orig_s, type_p s, |
| const struct write_types_data *wtd); |
| static void write_types_process_field |
| (type_p f, const struct walk_type_data *d); |
| static void write_types (outf_p output_header, |
| type_p structures, |
| const struct write_types_data *wtd); |
| static void write_types_local_process_field |
| (type_p f, const struct walk_type_data *d); |
| static void write_local_func_for_structure (const_type_p orig_s, type_p s); |
| static void write_local (outf_p output_header, |
| type_p structures); |
| static int contains_scalar_p (type_p t); |
| static void put_mangled_filename (outf_p, const input_file *); |
| static void finish_root_table (struct flist *flp, const char *pfx, |
| const char *lastname, |
| const char *tname, const char *name); |
| static void write_root (outf_p, pair_p, type_p, const char *, int, |
| struct fileloc *, bool); |
| static void write_array (outf_p f, pair_p v, |
| const struct write_types_data *wtd); |
| static void write_roots (pair_p, bool); |
| |
| /* Parameters for walk_type. */ |
| |
| struct walk_type_data |
| { |
| process_field_fn process_field; |
| const void *cookie; |
| outf_p of; |
| options_p opt; |
| const char *val; |
| const char *prev_val[4]; |
| int indent; |
| int counter; |
| const struct fileloc *line; |
| lang_bitmap bitmap; |
| int used_length; |
| type_p orig_s; |
| const char *reorder_fn; |
| bool needs_cast_p; |
| bool fn_wants_lvalue; |
| bool in_record_p; |
| int loopcounter; |
| bool in_ptr_field; |
| bool have_this_obj; |
| }; |
| |
| |
| /* Given a string TYPE_NAME, representing a C++ typename, return a valid |
| pre-processor identifier to use in a #define directive. This replaces |
| special characters used in C++ identifiers like '>', '<' and ':' with |
| '_'. |
| |
| If no C++ special characters are found in TYPE_NAME, return |
| TYPE_NAME. Otherwise, return a copy of TYPE_NAME with the special |
| characters replaced with '_'. In this case, the caller is |
| responsible for freeing the allocated string. */ |
| |
| static const char * |
| filter_type_name (const char *type_name) |
| { |
| if (strchr (type_name, '<') || strchr (type_name, ':')) |
| { |
| size_t i; |
| char *s = xstrdup (type_name); |
| for (i = 0; i < strlen (s); i++) |
| if (s[i] == '<' || s[i] == '>' || s[i] == ':' || s[i] == ',' |
| || s[i] == '*') |
| s[i] = '_'; |
| return s; |
| } |
| else |
| return type_name; |
| } |
| |
| |
| /* Print a mangled name representing T to OF. */ |
| |
| static void |
| output_mangled_typename (outf_p of, const_type_p t) |
| { |
| if (t == NULL) |
| oprintf (of, "Z"); |
| else |
| switch (t->kind) |
| { |
| case TYPE_NONE: |
| case TYPE_UNDEFINED: |
| gcc_unreachable (); |
| break; |
| case TYPE_POINTER: |
| oprintf (of, "P"); |
| output_mangled_typename (of, t->u.p); |
| break; |
| case TYPE_SCALAR: |
| oprintf (of, "I"); |
| break; |
| case TYPE_STRING: |
| oprintf (of, "S"); |
| break; |
| case TYPE_STRUCT: |
| case TYPE_UNION: |
| case TYPE_LANG_STRUCT: |
| case TYPE_USER_STRUCT: |
| { |
| /* For references to classes within an inheritance hierarchy, |
| only ever reference the ultimate base class, since only |
| it will have gt_ functions. */ |
| t = get_ultimate_base_class (t); |
| const char *id_for_tag = filter_type_name (t->u.s.tag); |
| oprintf (of, "%lu%s", (unsigned long) strlen (id_for_tag), |
| id_for_tag); |
| if (id_for_tag != t->u.s.tag) |
| free (CONST_CAST (char *, id_for_tag)); |
| } |
| break; |
| case TYPE_ARRAY: |
| gcc_unreachable (); |
| } |
| } |
| |
| /* Print PARAM to D->OF processing escapes. D->VAL references the |
| current object, D->PREV_VAL the object containing the current |
| object, ONAME is the name of the option and D->LINE is used to |
| print error messages. */ |
| |
| static void |
| output_escaped_param (struct walk_type_data *d, const char *param, |
| const char *oname) |
| { |
| const char *p; |
| |
| for (p = param; *p; p++) |
| if (*p != '%') |
| oprintf (d->of, "%c", *p); |
| else |
| switch (*++p) |
| { |
| case 'h': |
| oprintf (d->of, "(%s)", d->prev_val[2]); |
| break; |
| case '0': |
| oprintf (d->of, "(%s)", d->prev_val[0]); |
| break; |
| case '1': |
| oprintf (d->of, "(%s)", d->prev_val[1]); |
| break; |
| case 'a': |
| { |
| const char *pp = d->val + strlen (d->val); |
| while (pp[-1] == ']') |
| while (*pp != '[') |
| pp--; |
| oprintf (d->of, "%s", pp); |
| } |
| break; |
| default: |
| error_at_line (d->line, "`%s' option contains bad escape %c%c", |
| oname, '%', *p); |
| } |
| } |
| |
| const char * |
| get_string_option (options_p opt, const char *key) |
| { |
| for (; opt; opt = opt->next) |
| if (strcmp (opt->name, key) == 0) |
| return opt->info.string; |
| return NULL; |
| } |
| |
| /* Machinery for avoiding duplicate tags within switch statements. */ |
| struct seen_tag |
| { |
| const char *tag; |
| struct seen_tag *next; |
| }; |
| |
| int |
| already_seen_tag (struct seen_tag *seen_tags, const char *tag) |
| { |
| /* Linear search, so O(n^2), but n is currently small. */ |
| while (seen_tags) |
| { |
| if (!strcmp (seen_tags->tag, tag)) |
| return 1; |
| seen_tags = seen_tags->next; |
| } |
| /* Not yet seen this tag. */ |
| return 0; |
| } |
| |
| void |
| mark_tag_as_seen (struct seen_tag **seen_tags, const char *tag) |
| { |
| /* Add to front of linked list. */ |
| struct seen_tag *new_node = XCNEW (struct seen_tag); |
| new_node->tag = tag; |
| new_node->next = *seen_tags; |
| *seen_tags = new_node; |
| } |
| |
| static void |
| walk_subclasses (type_p base, struct walk_type_data *d, |
| struct seen_tag **seen_tags) |
| { |
| for (type_p sub = base->u.s.first_subclass; sub != NULL; |
| sub = sub->u.s.next_sibling_class) |
| { |
| const char *type_tag = get_string_option (sub->u.s.opt, "tag"); |
| if (type_tag && !already_seen_tag (*seen_tags, type_tag)) |
| { |
| mark_tag_as_seen (seen_tags, type_tag); |
| oprintf (d->of, "%*scase %s:\n", d->indent, "", type_tag); |
| d->indent += 2; |
| oprintf (d->of, "%*s{\n", d->indent, ""); |
| d->indent += 2; |
| oprintf (d->of, "%*s%s *sub = static_cast <%s *> (x);\n", |
| d->indent, "", sub->u.s.tag, sub->u.s.tag); |
| const char *old_val = d->val; |
| d->val = "(*sub)"; |
| walk_type (sub, d); |
| d->val = old_val; |
| d->indent -= 2; |
| oprintf (d->of, "%*s}\n", d->indent, ""); |
| oprintf (d->of, "%*sbreak;\n", d->indent, ""); |
| d->indent -= 2; |
| } |
| walk_subclasses (sub, d, seen_tags); |
| } |
| } |
| |
| /* Call D->PROCESS_FIELD for every field (or subfield) of D->VAL, |
| which is of type T. Write code to D->OF to constrain execution (at |
| the point that D->PROCESS_FIELD is called) to the appropriate |
| cases. Call D->PROCESS_FIELD on subobjects before calling it on |
| pointers to those objects. D->PREV_VAL lists the objects |
| containing the current object, D->OPT is a list of options to |
| apply, D->INDENT is the current indentation level, D->LINE is used |
| to print error messages, D->BITMAP indicates which languages to |
| print the structure for. */ |
| |
| static void |
| walk_type (type_p t, struct walk_type_data *d) |
| { |
| const char *length = NULL; |
| const char *desc = NULL; |
| const char *type_tag = NULL; |
| int maybe_undef_p = 0; |
| int atomic_p = 0; |
| options_p oo; |
| const struct nested_ptr_data *nested_ptr_d = NULL; |
| |
| d->needs_cast_p = false; |
| for (oo = d->opt; oo; oo = oo->next) |
| if (strcmp (oo->name, "length") == 0 && oo->kind == OPTION_STRING) |
| length = oo->info.string; |
| else if (strcmp (oo->name, "maybe_undef") == 0) |
| maybe_undef_p = 1; |
| else if (strcmp (oo->name, "desc") == 0 && oo->kind == OPTION_STRING) |
| desc = oo->info.string; |
| else if (strcmp (oo->name, "nested_ptr") == 0 |
| && oo->kind == OPTION_NESTED) |
| nested_ptr_d = (const struct nested_ptr_data *) oo->info.nested; |
| else if (strcmp (oo->name, "dot") == 0) |
| ; |
| else if (strcmp (oo->name, "tag") == 0) |
| type_tag = oo->info.string; |
| else if (strcmp (oo->name, "special") == 0) |
| ; |
| else if (strcmp (oo->name, "skip") == 0) |
| ; |
| else if (strcmp (oo->name, "atomic") == 0) |
| atomic_p = 1; |
| else if (strcmp (oo->name, "default") == 0) |
| ; |
| else if (strcmp (oo->name, "chain_next") == 0) |
| ; |
| else if (strcmp (oo->name, "chain_prev") == 0) |
| ; |
| else if (strcmp (oo->name, "chain_circular") == 0) |
| ; |
| else if (strcmp (oo->name, "reorder") == 0) |
| ; |
| else if (strcmp (oo->name, "variable_size") == 0) |
| ; |
| else if (strcmp (oo->name, "for_user") == 0) |
| ; |
| else |
| error_at_line (d->line, "unknown option `%s'\n", oo->name); |
| |
| if (d->used_length) |
| length = NULL; |
| |
| if (maybe_undef_p |
| && (t->kind != TYPE_POINTER || !union_or_struct_p (t->u.p))) |
| { |
| error_at_line (d->line, |
| "field `%s' has invalid option `maybe_undef_p'\n", |
| d->val); |
| return; |
| } |
| |
| if (atomic_p && (t->kind != TYPE_POINTER) && (t->kind != TYPE_STRING)) |
| { |
| error_at_line (d->line, "field `%s' has invalid option `atomic'\n", d->val); |
| return; |
| } |
| |
| switch (t->kind) |
| { |
| case TYPE_SCALAR: |
| case TYPE_STRING: |
| d->process_field (t, d); |
| break; |
| |
| case TYPE_POINTER: |
| { |
| d->in_ptr_field = true; |
| if (maybe_undef_p && t->u.p->u.s.line.file == NULL) |
| { |
| oprintf (d->of, "%*sgcc_assert (!%s);\n", d->indent, "", d->val); |
| break; |
| } |
| |
| /* If a pointer type is marked as "atomic", we process the |
| field itself, but we don't walk the data that they point to. |
| |
| There are two main cases where we walk types: to mark |
| pointers that are reachable, and to relocate pointers when |
| writing a PCH file. In both cases, an atomic pointer is |
| itself marked or relocated, but the memory that it points |
| to is left untouched. In the case of PCH, that memory will |
| be read/written unchanged to the PCH file. */ |
| if (atomic_p) |
| { |
| oprintf (d->of, "%*sif (%s != NULL) {\n", d->indent, "", d->val); |
| d->indent += 2; |
| d->process_field (t, d); |
| d->indent -= 2; |
| oprintf (d->of, "%*s}\n", d->indent, ""); |
| break; |
| } |
| |
| if (!length) |
| { |
| if (!union_or_struct_p (t->u.p)) |
| { |
| error_at_line (d->line, |
| "field `%s' is pointer to unimplemented type", |
| d->val); |
| break; |
| } |
| |
| if (nested_ptr_d) |
| { |
| const char *oldprevval2 = d->prev_val[2]; |
| |
| if (!union_or_struct_p (nested_ptr_d->type)) |
| { |
| error_at_line (d->line, |
| "field `%s' has invalid " |
| "option `nested_ptr'\n", d->val); |
| return; |
| } |
| |
| d->prev_val[2] = d->val; |
| oprintf (d->of, "%*s{\n", d->indent, ""); |
| d->indent += 2; |
| d->val = xasprintf ("x%d", d->counter++); |
| oprintf (d->of, "%*s%s %s * %s%s =\n", d->indent, "", |
| (nested_ptr_d->type->kind == TYPE_UNION |
| ? "union" : "struct"), |
| nested_ptr_d->type->u.s.tag, |
| d->fn_wants_lvalue ? "" : "const ", d->val); |
| oprintf (d->of, "%*s", d->indent + 2, ""); |
| output_escaped_param (d, nested_ptr_d->convert_from, |
| "nested_ptr"); |
| oprintf (d->of, ";\n"); |
| |
| d->process_field (nested_ptr_d->type, d); |
| |
| if (d->fn_wants_lvalue) |
| { |
| oprintf (d->of, "%*s%s = ", d->indent, "", |
| d->prev_val[2]); |
| d->prev_val[2] = d->val; |
| output_escaped_param (d, nested_ptr_d->convert_to, |
| "nested_ptr"); |
| oprintf (d->of, ";\n"); |
| } |
| |
| d->indent -= 2; |
| oprintf (d->of, "%*s}\n", d->indent, ""); |
| d->val = d->prev_val[2]; |
| d->prev_val[2] = oldprevval2; |
| } |
| else |
| d->process_field (t->u.p, d); |
| } |
| else |
| { |
| int loopcounter = d->loopcounter; |
| const char *oldval = d->val; |
| const char *oldprevval3 = d->prev_val[3]; |
| char *newval; |
| |
| oprintf (d->of, "%*sif (%s != NULL) {\n", d->indent, "", d->val); |
| d->indent += 2; |
| oprintf (d->of, "%*ssize_t i%d;\n", d->indent, "", loopcounter); |
| oprintf (d->of, "%*sfor (i%d = 0; i%d != (size_t)(", d->indent, |
| "", loopcounter, loopcounter); |
| if (!d->in_record_p) |
| output_escaped_param (d, length, "length"); |
| else |
| oprintf (d->of, "l%d", loopcounter); |
| if (d->have_this_obj) |
| /* Try to unswitch loops (see PR53880). */ |
| oprintf (d->of, ") && ((void *)%s == this_obj", oldval); |
| oprintf (d->of, "); i%d++) {\n", loopcounter); |
| d->indent += 2; |
| d->val = newval = xasprintf ("%s[i%d]", oldval, loopcounter); |
| d->used_length = 1; |
| d->prev_val[3] = oldval; |
| walk_type (t->u.p, d); |
| free (newval); |
| d->val = oldval; |
| d->prev_val[3] = oldprevval3; |
| d->used_length = 0; |
| d->indent -= 2; |
| oprintf (d->of, "%*s}\n", d->indent, ""); |
| d->process_field (t, d); |
| d->indent -= 2; |
| oprintf (d->of, "%*s}\n", d->indent, ""); |
| } |
| d->in_ptr_field = false; |
| } |
| break; |
| |
| case TYPE_ARRAY: |
| { |
| int loopcounter; |
| const char *oldval = d->val; |
| char *newval; |
| |
| /* If it's an array of scalars, we optimize by not generating |
| any code. */ |
| if (t->u.a.p->kind == TYPE_SCALAR) |
| break; |
| |
| if (length) |
| loopcounter = d->loopcounter; |
| else |
| loopcounter = d->counter++; |
| |
| /* When walking an array, compute the length and store it in a |
| local variable before walking the array elements, instead of |
| recomputing the length expression each time through the loop. |
| This is necessary to handle tcc_vl_exp objects like CALL_EXPR, |
| where the length is stored in the first array element, |
| because otherwise that operand can get overwritten on the |
| first iteration. */ |
| oprintf (d->of, "%*s{\n", d->indent, ""); |
| d->indent += 2; |
| oprintf (d->of, "%*ssize_t i%d;\n", d->indent, "", loopcounter); |
| if (!d->in_record_p || !length) |
| { |
| oprintf (d->of, "%*ssize_t l%d = (size_t)(", |
| d->indent, "", loopcounter); |
| if (length) |
| output_escaped_param (d, length, "length"); |
| else |
| oprintf (d->of, "%s", t->u.a.len); |
| oprintf (d->of, ");\n"); |
| } |
| |
| oprintf (d->of, "%*sfor (i%d = 0; i%d != l%d; i%d++) {\n", |
| d->indent, "", |
| loopcounter, loopcounter, loopcounter, loopcounter); |
| d->indent += 2; |
| d->val = newval = xasprintf ("%s[i%d]", oldval, loopcounter); |
| d->used_length = 1; |
| walk_type (t->u.a.p, d); |
| free (newval); |
| d->used_length = 0; |
| d->val = oldval; |
| d->indent -= 2; |
| oprintf (d->of, "%*s}\n", d->indent, ""); |
| d->indent -= 2; |
| oprintf (d->of, "%*s}\n", d->indent, ""); |
| } |
| break; |
| |
| case TYPE_STRUCT: |
| case TYPE_UNION: |
| { |
| pair_p f; |
| const char *oldval = d->val; |
| const char *oldprevval1 = d->prev_val[1]; |
| const char *oldprevval2 = d->prev_val[2]; |
| const int union_p = t->kind == TYPE_UNION; |
| int seen_default_p = 0; |
| options_p o; |
| int lengths_seen = 0; |
| int endcounter; |
| bool any_length_seen = false; |
| |
| if (!t->u.s.line.file) |
| error_at_line (d->line, "incomplete structure `%s'", t->u.s.tag); |
| |
| if ((d->bitmap & t->u.s.bitmap) != d->bitmap) |
| { |
| error_at_line (d->line, |
| "structure `%s' defined for mismatching languages", |
| t->u.s.tag); |
| error_at_line (&t->u.s.line, "one structure defined here"); |
| } |
| |
| /* Some things may also be defined in the structure's options. */ |
| for (o = t->u.s.opt; o; o = o->next) |
| if (!desc && strcmp (o->name, "desc") == 0 |
| && o->kind == OPTION_STRING) |
| desc = o->info.string; |
| |
| d->prev_val[2] = oldval; |
| d->prev_val[1] = oldprevval2; |
| if (union_p) |
| { |
| if (desc == NULL) |
| { |
| error_at_line (d->line, |
| "missing `desc' option for union `%s'", |
| t->u.s.tag); |
| desc = "1"; |
| } |
| oprintf (d->of, "%*sswitch ((int) (", d->indent, ""); |
| output_escaped_param (d, desc, "desc"); |
| oprintf (d->of, "))\n"); |
| d->indent += 2; |
| oprintf (d->of, "%*s{\n", d->indent, ""); |
| } |
| else if (desc) |
| { |
| /* We have a "desc" option on a struct, signifying the |
| base class within a GC-managed inheritance hierarchy. |
| The current code specialcases the base class, then walks |
| into subclasses, recursing into this routine to handle them. |
| This organization requires the base class to have a case in |
| the switch statement, and hence a tag value is mandatory |
| for the base class. This restriction could be removed, but |
| it would require some restructing of this code. */ |
| if (!type_tag) |
| { |
| error_at_line (d->line, |
| "missing `tag' option for type `%s'", |
| t->u.s.tag); |
| } |
| oprintf (d->of, "%*sswitch ((int) (", d->indent, ""); |
| output_escaped_param (d, desc, "desc"); |
| oprintf (d->of, "))\n"); |
| d->indent += 2; |
| oprintf (d->of, "%*s{\n", d->indent, ""); |
| oprintf (d->of, "%*scase %s:\n", d->indent, "", type_tag); |
| d->indent += 2; |
| } |
| |
| FOR_ALL_INHERITED_FIELDS (t, f) |
| { |
| options_p oo; |
| int skip_p = 0; |
| const char *fieldlength = NULL; |
| |
| d->reorder_fn = NULL; |
| for (oo = f->opt; oo; oo = oo->next) |
| if (strcmp (oo->name, "skip") == 0) |
| skip_p = 1; |
| else if (strcmp (oo->name, "length") == 0 |
| && oo->kind == OPTION_STRING) |
| fieldlength = oo->info.string; |
| |
| if (skip_p) |
| continue; |
| if (fieldlength) |
| { |
| lengths_seen++; |
| d->counter++; |
| if (!union_p) |
| { |
| if (!any_length_seen) |
| { |
| oprintf (d->of, "%*s{\n", d->indent, ""); |
| d->indent += 2; |
| } |
| any_length_seen = true; |
| |
| oprintf (d->of, "%*ssize_t l%d = (size_t)(", |
| d->indent, "", d->counter - 1); |
| output_escaped_param (d, fieldlength, "length"); |
| oprintf (d->of, ");\n"); |
| } |
| } |
| } |
| endcounter = d->counter; |
| |
| FOR_ALL_INHERITED_FIELDS (t, f) |
| { |
| options_p oo; |
| const char *dot = "."; |
| const char *tagid = NULL; |
| int skip_p = 0; |
| int default_p = 0; |
| const char *fieldlength = NULL; |
| char *newval; |
| |
| d->reorder_fn = NULL; |
| for (oo = f->opt; oo; oo = oo->next) |
| if (strcmp (oo->name, "dot") == 0 |
| && oo->kind == OPTION_STRING) |
| dot = oo->info.string; |
| else if (strcmp (oo->name, "tag") == 0 |
| && oo->kind == OPTION_STRING) |
| tagid = oo->info.string; |
| else if (strcmp (oo->name, "skip") == 0) |
| skip_p = 1; |
| else if (strcmp (oo->name, "default") == 0) |
| default_p = 1; |
| else if (strcmp (oo->name, "reorder") == 0 |
| && oo->kind == OPTION_STRING) |
| d->reorder_fn = oo->info.string; |
| else if (strcmp (oo->name, "length") == 0 |
| && oo->kind == OPTION_STRING) |
| fieldlength = oo->info.string; |
| |
| if (skip_p) |
| continue; |
| |
| if (union_p && tagid) |
| { |
| oprintf (d->of, "%*scase %s:\n", d->indent, "", tagid); |
| d->indent += 2; |
| } |
| else if (union_p && default_p) |
| { |
| oprintf (d->of, "%*sdefault:\n", d->indent, ""); |
| d->indent += 2; |
| seen_default_p = 1; |
| } |
| else if (!union_p && (default_p || tagid)) |
| error_at_line (d->line, |
| "can't use `%s' outside a union on field `%s'", |
| default_p ? "default" : "tag", f->name); |
| else if (union_p && !(default_p || tagid) |
| && f->type->kind == TYPE_SCALAR) |
| { |
| fprintf (stderr, |
| "%s:%d: warning: field `%s' is missing `tag' or `default' option\n", |
| get_input_file_name (d->line->file), d->line->line, |
| f->name); |
| continue; |
| } |
| else if (union_p && !(default_p || tagid)) |
| error_at_line (d->line, |
| "field `%s' is missing `tag' or `default' option", |
| f->name); |
| |
| if (fieldlength) |
| { |
| d->loopcounter = endcounter - lengths_seen--; |
| } |
| |
| d->line = &f->line; |
| d->val = newval = xasprintf ("%s%s%s", oldval, dot, f->name); |
| d->opt = f->opt; |
| d->used_length = false; |
| d->in_record_p = !union_p; |
| |
| walk_type (f->type, d); |
| |
| d->in_record_p = false; |
| |
| free (newval); |
| |
| if (union_p) |
| { |
| oprintf (d->of, "%*sbreak;\n", d->indent, ""); |
| d->indent -= 2; |
| } |
| } |
| d->reorder_fn = NULL; |
| |
| d->val = oldval; |
| d->prev_val[1] = oldprevval1; |
| d->prev_val[2] = oldprevval2; |
| |
| if (union_p && !seen_default_p) |
| { |
| oprintf (d->of, "%*sdefault:\n", d->indent, ""); |
| oprintf (d->of, "%*s break;\n", d->indent, ""); |
| } |
| |
| if (desc && !union_p) |
| { |
| oprintf (d->of, "%*sbreak;\n", d->indent, ""); |
| d->indent -= 2; |
| } |
| if (union_p) |
| { |
| oprintf (d->of, "%*s}\n", d->indent, ""); |
| d->indent -= 2; |
| } |
| else if (desc) |
| { |
| /* Add cases to handle subclasses. */ |
| struct seen_tag *tags = NULL; |
| walk_subclasses (t, d, &tags); |
| |
| /* Ensure that if someone forgets a "tag" option that we don't |
| silent fail to traverse that subclass's fields. */ |
| if (!seen_default_p) |
| { |
| oprintf (d->of, "%*s/* Unrecognized tag value. */\n", |
| d->indent, ""); |
| oprintf (d->of, "%*sdefault: gcc_unreachable (); \n", |
| d->indent, ""); |
| } |
| |
| /* End of the switch statement */ |
| oprintf (d->of, "%*s}\n", d->indent, ""); |
| d->indent -= 2; |
| } |
| if (any_length_seen) |
| { |
| d->indent -= 2; |
| oprintf (d->of, "%*s}\n", d->indent, ""); |
| } |
| } |
| break; |
| |
| case TYPE_LANG_STRUCT: |
| { |
| type_p nt; |
| for (nt = t->u.s.lang_struct; nt; nt = nt->next) |
| if ((d->bitmap & nt->u.s.bitmap) == d->bitmap) |
| break; |
| if (nt == NULL) |
| error_at_line (d->line, "structure `%s' differs between languages", |
| t->u.s.tag); |
| else |
| walk_type (nt, d); |
| } |
| break; |
| |
| case TYPE_USER_STRUCT: |
| d->process_field (t, d); |
| break; |
| |
| case TYPE_NONE: |
| case TYPE_UNDEFINED: |
| gcc_unreachable (); |
| } |
| } |
| |
| /* process_field routine for marking routines. */ |
| |
| static void |
| write_types_process_field (type_p f, const struct walk_type_data *d) |
| { |
| const struct write_types_data *wtd; |
| const char *cast = d->needs_cast_p ? "(void *)" : ""; |
| wtd = (const struct write_types_data *) d->cookie; |
| |
| switch (f->kind) |
| { |
| case TYPE_NONE: |
| case TYPE_UNDEFINED: |
| gcc_unreachable (); |
| case TYPE_POINTER: |
| oprintf (d->of, "%*s%s (%s%s", d->indent, "", |
| wtd->subfield_marker_routine, cast, d->val); |
| if (wtd->param_prefix) |
| { |
| if (f->u.p->kind == TYPE_SCALAR) |
| /* The current type is a pointer to a scalar (so not |
| considered like a pointer to instances of user defined |
| types) and we are seeing it; it means we must be even |
| more careful about the second argument of the |
| SUBFIELD_MARKER_ROUTINE call. That argument must |
| always be the instance of the type for which |
| write_func_for_structure was called - this really is |
| what the function SUBFIELD_MARKER_ROUTINE expects. |
| That is, it must be an instance of the ORIG_S type |
| parameter of write_func_for_structure. The convention |
| is that that argument must be "x" in that case (as set |
| by write_func_for_structure). The problem is, we can't |
| count on d->prev_val[3] to be always set to "x" in that |
| case. Sometimes walk_type can set it to something else |
| (to e.g cooperate with write_array when called from |
| write_roots). So let's set it to "x" here then. */ |
| oprintf (d->of, ", x"); |
| else |
| oprintf (d->of, ", %s", d->prev_val[3]); |
| if (d->orig_s) |
| { |
| oprintf (d->of, ", gt_%s_", wtd->param_prefix); |
| output_mangled_typename (d->of, d->orig_s); |
| } |
| else |
| oprintf (d->of, ", gt_%sa_%s", wtd->param_prefix, d->prev_val[0]); |
| } |
| oprintf (d->of, ");\n"); |
| if (d->reorder_fn && wtd->reorder_note_routine) |
| oprintf (d->of, "%*s%s (%s%s, %s, %s);\n", d->indent, "", |
| wtd->reorder_note_routine, cast, d->val, |
| d->prev_val[3], d->reorder_fn); |
| break; |
| |
| case TYPE_STRING: |
| case TYPE_STRUCT: |
| case TYPE_UNION: |
| case TYPE_LANG_STRUCT: |
| case TYPE_USER_STRUCT: |
| if (f->kind == TYPE_USER_STRUCT && !d->in_ptr_field) |
| { |
| /* If F is a user-defined type and the field is not a |
| pointer to the type, then we should not generate the |
| standard pointer-marking code. All we need to do is call |
| the user-provided marking function to process the fields |
| of F. */ |
| oprintf (d->of, "%*sgt_%sx (&(%s));\n", d->indent, "", wtd->prefix, |
| d->val); |
| } |
| else |
| { |
| oprintf (d->of, "%*sgt_%s_", d->indent, "", wtd->prefix); |
| output_mangled_typename (d->of, f); |
| oprintf (d->of, " (%s%s);\n", cast, d->val); |
| if (d->reorder_fn && wtd->reorder_note_routine) |
| oprintf (d->of, "%*s%s (%s%s, %s%s, %s);\n", d->indent, "", |
| wtd->reorder_note_routine, cast, d->val, cast, d->val, |
| d->reorder_fn); |
| } |
| break; |
| |
| case TYPE_SCALAR: |
| break; |
| |
| case TYPE_ARRAY: |
| gcc_unreachable (); |
| } |
| } |
| |
| /* Return an output file that is suitable for definitions which can |
| reference struct S */ |
| |
| static outf_p |
| get_output_file_for_structure (const_type_p s) |
| { |
| const input_file *fn; |
| |
| gcc_assert (union_or_struct_p (s)); |
| fn = s->u.s.line.file; |
| |
| /* The call to get_output_file_with_visibility may update fn by |
| caching its result inside, so we need the CONST_CAST. */ |
| return get_output_file_with_visibility (CONST_CAST (input_file*, fn)); |
| } |
| |
| |
| /* Returns the specifier keyword for a string or union type S, empty string |
| otherwise. */ |
| |
| static const char * |
| get_type_specifier (const type_p s) |
| { |
| if (s->kind == TYPE_STRUCT) |
| return "struct "; |
| else if (s->kind == TYPE_LANG_STRUCT) |
| return get_type_specifier (s->u.s.lang_struct); |
| else if (s->kind == TYPE_UNION) |
| return "union "; |
| return ""; |
| } |
| |
| |
| /* Emits a declaration for type TY (assumed to be a union or a |
| structure) on stream OUT. */ |
| |
| static void |
| write_type_decl (outf_p out, type_p ty) |
| { |
| if (union_or_struct_p (ty)) |
| oprintf (out, "%s%s", get_type_specifier (ty), ty->u.s.tag); |
| else if (ty->kind == TYPE_SCALAR) |
| { |
| if (ty->u.scalar_is_char) |
| oprintf (out, "const char"); |
| else |
| oprintf (out, "void"); |
| } |
| else if (ty->kind == TYPE_POINTER) |
| { |
| write_type_decl (out, ty->u.p); |
| oprintf (out, " *"); |
| } |
| else if (ty->kind == TYPE_ARRAY) |
| { |
| write_type_decl (out, ty->u.a.p); |
| oprintf (out, " *"); |
| } |
| else if (ty->kind == TYPE_STRING) |
| { |
| oprintf (out, "const char *"); |
| } |
| else |
| gcc_unreachable (); |
| } |
| |
| |
| /* Write on OF the name of the marker function for structure S. PREFIX |
| is the prefix to use (to distinguish ggc from pch markers). */ |
| |
| static void |
| write_marker_function_name (outf_p of, type_p s, const char *prefix) |
| { |
| if (union_or_struct_p (s)) |
| { |
| const char *id_for_tag = filter_type_name (s->u.s.tag); |
| oprintf (of, "gt_%sx_%s", prefix, id_for_tag); |
| if (id_for_tag != s->u.s.tag) |
| free (CONST_CAST (char *, id_for_tag)); |
| } |
| else |
| gcc_unreachable (); |
| } |
| |
| /* Write on OF a user-callable routine to act as an entry point for |
| the marking routine for S, generated by write_func_for_structure. |
| WTD distinguishes between ggc and pch markers. */ |
| |
| static void |
| write_user_func_for_structure_ptr (outf_p of, type_p s, const write_types_data *wtd) |
| { |
| gcc_assert (union_or_struct_p (s)); |
| |
| type_p alias_of = NULL; |
| for (options_p opt = s->u.s.opt; opt; opt = opt->next) |
| if (strcmp (opt->name, "ptr_alias") == 0) |
| { |
| /* ALIAS_OF is set if ORIG_S is marked "ptr_alias". This means that |
| we do not generate marking code for ORIG_S here. Instead, a |
| forwarder #define in gtype-desc.h will cause every call to its |
| marker to call the target of this alias. |
| |
| However, we still want to create a user entry code for the |
| aliased type. So, if ALIAS_OF is set, we only generate the |
| user-callable marker function. */ |
| alias_of = opt->info.type; |
| break; |
| } |
| |
| DBGPRINTF ("write_user_func_for_structure_ptr: %s %s", s->u.s.tag, |
| wtd->prefix); |
| |
| /* Only write the function once. */ |
| if (s->u.s.wrote_user_func_for_ptr[wtd->kind]) |
| return; |
| s->u.s.wrote_user_func_for_ptr[wtd->kind] = true; |
| |
| oprintf (of, "\nvoid\n"); |
| oprintf (of, "gt_%sx (", wtd->prefix); |
| write_type_decl (of, s); |
| oprintf (of, " *& x)\n"); |
| oprintf (of, "{\n"); |
| oprintf (of, " if (x)\n "); |
| write_marker_function_name (of, |
| alias_of ? alias_of : get_ultimate_base_class (s), |
| wtd->prefix); |
| oprintf (of, " ((void *) x);\n"); |
| oprintf (of, "}\n"); |
| } |
| |
| |
| /* Write a function to mark all the fields of type S on OF. PREFIX |
| and D are as in write_user_marking_functions. */ |
| |
| static void |
| write_user_func_for_structure_body (type_p s, const char *prefix, |
| struct walk_type_data *d) |
| { |
| oprintf (d->of, "\nvoid\n"); |
| oprintf (d->of, "gt_%sx (", prefix); |
| write_type_decl (d->of, s); |
| oprintf (d->of, "& x_r ATTRIBUTE_UNUSED)\n"); |
| oprintf (d->of, "{\n"); |
| oprintf (d->of, " "); |
| write_type_decl (d->of, s); |
| oprintf (d->of, " * ATTRIBUTE_UNUSED x = &x_r;\n"); |
| d->val = "(*x)"; |
| d->indent = 2; |
| walk_type (s, d); |
| oprintf (d->of, "}\n"); |
| } |
| |
| /* Emit the user-callable functions needed to mark all the types used |
| by the user structure S. PREFIX is the prefix to use to |
| distinguish ggc and pch markers. D contains data needed to pass to |
| walk_type when traversing the fields of a type. |
| |
| For every type T referenced by S, two routines are generated: one |
| that takes 'T *', marks the pointer and calls the second routine, |
| which just marks the fields of T. */ |
| |
| static void |
| write_user_marking_functions (type_p s, |
| const write_types_data *w, |
| struct walk_type_data *d) |
| { |
| gcc_assert (s->kind == TYPE_USER_STRUCT); |
| |
| for (pair_p fld = s->u.s.fields; fld; fld = fld->next) |
| { |
| type_p fld_type = fld->type; |
| if (fld_type->kind == TYPE_POINTER) |
| { |
| type_p pointed_to_type = fld_type->u.p; |
| if (union_or_struct_p (pointed_to_type)) |
| write_user_func_for_structure_ptr (d->of, pointed_to_type, w); |
| } |
| else if (union_or_struct_p (fld_type)) |
| write_user_func_for_structure_body (fld_type, w->prefix, d); |
| } |
| } |
| |
| |
| /* For S, a structure that's part of ORIG_S write out a routine that: |
| - Takes a parameter, a void * but actually of type *S |
| - If SEEN_ROUTINE returns nonzero, calls write_types_process_field on each |
| field of S or its substructures and (in some cases) things |
| that are pointed to by S. */ |
| |
| static void |
| write_func_for_structure (type_p orig_s, type_p s, |
| const struct write_types_data *wtd) |
| { |
| const char *chain_next = NULL; |
| const char *chain_prev = NULL; |
| const char *chain_circular = NULL; |
| options_p opt; |
| struct walk_type_data d; |
| |
| if (s->u.s.base_class) |
| { |
| /* Verify that the base class has a "desc", since otherwise |
| the traversal hooks there won't attempt to visit fields of |
| subclasses such as this one. */ |
| const_type_p ubc = get_ultimate_base_class (s); |
| if ((!opts_have (ubc->u.s.opt, "user") |
| && !opts_have (ubc->u.s.opt, "desc"))) |
| error_at_line (&s->u.s.line, |
| ("'%s' is a subclass of non-GTY(user) GTY class '%s'" |
| ", but '%s' lacks a discriminator 'desc' option"), |
| s->u.s.tag, ubc->u.s.tag, ubc->u.s.tag); |
| |
| /* Don't write fns for subclasses, only for the ultimate base class |
| within an inheritance hierarchy. */ |
| return; |
| } |
| |
| memset (&d, 0, sizeof (d)); |
| d.of = get_output_file_for_structure (s); |
| |
| bool for_user = false; |
| for (opt = s->u.s.opt; opt; opt = opt->next) |
| if (strcmp (opt->name, "chain_next") == 0 |
| && opt->kind == OPTION_STRING) |
| chain_next = opt->info.string; |
| else if (strcmp (opt->name, "chain_prev") == 0 |
| && opt->kind == OPTION_STRING) |
| chain_prev = opt->info.string; |
| else if (strcmp (opt->name, "chain_circular") == 0 |
| && opt->kind == OPTION_STRING) |
| chain_circular = opt->info.string; |
| else if (strcmp (opt->name, "for_user") == 0) |
| for_user = true; |
| if (chain_prev != NULL && chain_next == NULL) |
| error_at_line (&s->u.s.line, "chain_prev without chain_next"); |
| if (chain_circular != NULL && chain_next != NULL) |
| error_at_line (&s->u.s.line, "chain_circular with chain_next"); |
| if (chain_circular != NULL) |
| chain_next = chain_circular; |
| |
| d.process_field = write_types_process_field; |
| d.cookie = wtd; |
| d.orig_s = orig_s; |
| d.opt = s->u.s.opt; |
| d.line = &s->u.s.line; |
| d.bitmap = s->u.s.bitmap; |
| d.prev_val[0] = "*x"; |
| d.prev_val[1] = "not valid postage"; /* Guarantee an error. */ |
| d.prev_val[3] = "x"; |
| d.val = "(*x)"; |
| d.have_this_obj = false; |
| |
| oprintf (d.of, "\n"); |
| oprintf (d.of, "void\n"); |
| write_marker_function_name (d.of, orig_s, wtd->prefix); |
| oprintf (d.of, " (void *x_p)\n"); |
| oprintf (d.of, "{\n "); |
| write_type_decl (d.of, s); |
| oprintf (d.of, " * %sx = (", chain_next == NULL ? "const " : ""); |
| write_type_decl (d.of, s); |
| oprintf (d.of, " *)x_p;\n"); |
| if (chain_next != NULL) |
| { |
| /* TYPE_USER_STRUCTs should not occur here. These structures |
| are completely handled by user code. */ |
| gcc_assert (orig_s->kind != TYPE_USER_STRUCT); |
| |
| oprintf (d.of, " "); |
| write_type_decl (d.of, s); |
| oprintf (d.of, " * xlimit = x;\n"); |
| } |
| if (chain_next == NULL) |
| { |
| oprintf (d.of, " if (%s (x", wtd->marker_routine); |
| if (wtd->param_prefix) |
| { |
| oprintf (d.of, ", x, gt_%s_", wtd->param_prefix); |
| output_mangled_typename (d.of, orig_s); |
| } |
| oprintf (d.of, "))\n"); |
| } |
| else |
| { |
| if (chain_circular != NULL) |
| oprintf (d.of, " if (!%s (xlimit", wtd->marker_routine); |
| else |
| oprintf (d.of, " while (%s (xlimit", wtd->marker_routine); |
| if (wtd->param_prefix) |
| { |
| oprintf (d.of, ", xlimit, gt_%s_", wtd->param_prefix); |
| output_mangled_typename (d.of, orig_s); |
| } |
| oprintf (d.of, "))\n"); |
| if (chain_circular != NULL) |
| oprintf (d.of, " return;\n do\n"); |
| |
| oprintf (d.of, " xlimit = ("); |
| d.prev_val[2] = "*xlimit"; |
| output_escaped_param (&d, chain_next, "chain_next"); |
| oprintf (d.of, ");\n"); |
| if (chain_prev != NULL) |
| { |
| oprintf (d.of, " if (x != xlimit)\n"); |
| oprintf (d.of, " for (;;)\n"); |
| oprintf (d.of, " {\n"); |
| oprintf (d.of, " %s %s * const xprev = (", |
| s->kind == TYPE_UNION ? "union" : "struct", s->u.s.tag); |
| |
| d.prev_val[2] = "*x"; |
| output_escaped_param (&d, chain_prev, "chain_prev"); |
| oprintf (d.of, ");\n"); |
| oprintf (d.of, " if (xprev == NULL) break;\n"); |
| oprintf (d.of, " x = xprev;\n"); |
| oprintf (d.of, " (void) %s (xprev", wtd->marker_routine); |
| if (wtd->param_prefix) |
| { |
| oprintf (d.of, ", xprev, gt_%s_", wtd->param_prefix); |
| output_mangled_typename (d.of, orig_s); |
| } |
| oprintf (d.of, ");\n"); |
| oprintf (d.of, " }\n"); |
| } |
| if (chain_circular != NULL) |
| { |
| oprintf (d.of, " while (%s (xlimit", wtd->marker_routine); |
| if (wtd->param_prefix) |
| { |
| oprintf (d.of, ", xlimit, gt_%s_", wtd->param_prefix); |
| output_mangled_typename (d.of, orig_s); |
| } |
| oprintf (d.of, "));\n"); |
| oprintf (d.of, " do\n"); |
| } |
| else |
| oprintf (d.of, " while (x != xlimit)\n"); |
| } |
| oprintf (d.of, " {\n"); |
| |
| d.prev_val[2] = "*x"; |
| d.indent = 6; |
| if (orig_s->kind != TYPE_USER_STRUCT) |
| walk_type (s, &d); |
| else |
| { |
| /* User structures have no fields to walk. Simply generate a call |
| to the user-provided structure marker. */ |
| oprintf (d.of, "%*sgt_%sx (x);\n", d.indent, "", wtd->prefix); |
| } |
| |
| if (chain_next != NULL) |
| { |
| oprintf (d.of, " x = ("); |
| output_escaped_param (&d, chain_next, "chain_next"); |
| oprintf (d.of, ");\n"); |
| } |
| |
| oprintf (d.of, " }\n"); |
| if (chain_circular != NULL) |
| oprintf (d.of, " while (x != xlimit);\n"); |
| oprintf (d.of, "}\n"); |
| |
| if (orig_s->kind == TYPE_USER_STRUCT) |
| write_user_marking_functions (orig_s, wtd, &d); |
| |
| if (for_user) |
| { |
| write_user_func_for_structure_body (orig_s, wtd->prefix, &d); |
| write_user_func_for_structure_ptr (d.of, orig_s, wtd); |
| } |
| } |
| |
| |
| /* Write out marker routines for STRUCTURES and PARAM_STRUCTS. */ |
| |
| static void |
| write_types (outf_p output_header, type_p structures, |
| const struct write_types_data *wtd) |
| { |
| int nbfun = 0; /* Count the emitted functions. */ |
| type_p s; |
| |
| oprintf (output_header, "\n/* %s*/\n", wtd->comment); |
| |
| /* We first emit the macros and the declarations. Functions' code is |
| emitted afterwards. This is needed in plugin mode. */ |
| oprintf (output_header, "/* Macros and declarations. */\n"); |
| for (s = structures; s; s = s->next) |
| /* Do not emit handlers for derived classes; we only ever deal with |
| the ultimate base class within an inheritance hierarchy. */ |
| if ((s->gc_used == GC_POINTED_TO || s->gc_used == GC_MAYBE_POINTED_TO) |
| && !s->u.s.base_class) |
| { |
| options_p opt; |
| |
| if (s->gc_used == GC_MAYBE_POINTED_TO && s->u.s.line.file == NULL) |
| continue; |
| |
| const char *s_id_for_tag = filter_type_name (s->u.s.tag); |
| |
| oprintf (output_header, "#define gt_%s_", wtd->prefix); |
| output_mangled_typename (output_header, s); |
| oprintf (output_header, "(X) do { \\\n"); |
| oprintf (output_header, |
| " if (X != NULL) gt_%sx_%s (X);\\\n", wtd->prefix, |
| s_id_for_tag); |
| oprintf (output_header, " } while (0)\n"); |
| |
| for (opt = s->u.s.opt; opt; opt = opt->next) |
| if (strcmp (opt->name, "ptr_alias") == 0 |
| && opt->kind == OPTION_TYPE) |
| { |
| const_type_p const t = (const_type_p) opt->info.type; |
| if (t->kind == TYPE_STRUCT |
| || t->kind == TYPE_UNION || t->kind == TYPE_LANG_STRUCT) |
| { |
| const char *t_id_for_tag = filter_type_name (t->u.s.tag); |
| oprintf (output_header, |
| "#define gt_%sx_%s gt_%sx_%s\n", |
| wtd->prefix, s->u.s.tag, wtd->prefix, t_id_for_tag); |
| if (t_id_for_tag != t->u.s.tag) |
| free (CONST_CAST (char *, t_id_for_tag)); |
| } |
| else |
| error_at_line (&s->u.s.line, |
| "structure alias is not a structure"); |
| break; |
| } |
| if (opt) |
| continue; |
| |
| /* Declare the marker procedure only once. */ |
| oprintf (output_header, |
| "extern void gt_%sx_%s (void *);\n", |
| wtd->prefix, s_id_for_tag); |
| |
| if (s_id_for_tag != s->u.s.tag) |
| free (CONST_CAST (char *, s_id_for_tag)); |
| |
| if (s->u.s.line.file == NULL) |
| { |
| fprintf (stderr, "warning: structure `%s' used but not defined\n", |
| s->u.s.tag); |
| continue; |
| } |
| } |
| |
| /* At last we emit the functions code. */ |
| oprintf (output_header, "\n/* functions code */\n"); |
| for (s = structures; s; s = s->next) |
| if (s->gc_used == GC_POINTED_TO || s->gc_used == GC_MAYBE_POINTED_TO) |
| { |
| options_p opt; |
| |
| if (s->gc_used == GC_MAYBE_POINTED_TO && s->u.s.line.file == NULL) |
| continue; |
| for (opt = s->u.s.opt; opt; opt = opt->next) |
| if (strcmp (opt->name, "ptr_alias") == 0) |
| break; |
| if (opt) |
| continue; |
| |
| if (s->kind == TYPE_LANG_STRUCT) |
| { |
| type_p ss; |
| for (ss = s->u.s.lang_struct; ss; ss = ss->next) |
| { |
| nbfun++; |
| DBGPRINTF ("writing func #%d lang_struct ss @ %p '%s'", |
| nbfun, (void*) ss, ss->u.s.tag); |
| write_func_for_structure (s, ss, wtd); |
| } |
| } |
| else |
| { |
| nbfun++; |
| DBGPRINTF ("writing func #%d struct s @ %p '%s'", |
| nbfun, (void*) s, s->u.s.tag); |
| write_func_for_structure (s, s, wtd); |
| } |
| } |
| else |
| { |
| /* Structure s is not possibly pointed to, so can be ignored. */ |
| DBGPRINTF ("ignored s @ %p '%s' gc_used#%d", |
| (void*)s, s->u.s.tag, |
| (int) s->gc_used); |
| } |
| |
| if (verbosity_level >= 2) |
| printf ("%s emitted %d routines for %s\n", |
| progname, nbfun, wtd->comment); |
| } |
| |
| static const struct write_types_data ggc_wtd = { |
| "ggc_m", NULL, "ggc_mark", "ggc_test_and_set_mark", NULL, |
| "GC marker procedures. ", |
| WTK_GGC |
| }; |
| |
| static const struct write_types_data pch_wtd = { |
| "pch_n", "pch_p", "gt_pch_note_object", "gt_pch_note_object", |
| "gt_pch_note_reorder", |
| "PCH type-walking procedures. ", |
| WTK_PCH |
| }; |
| |
| /* Write out the local pointer-walking routines. */ |
| |
| /* process_field routine for local pointer-walking for user-callable |
| routines. The difference between this and |
| write_types_local_process_field is that, in this case, we do not |
| need to check whether the given pointer matches the address of the |
| parent structure. This check was already generated by the call |
| to gt_pch_nx in the main gt_pch_p_*() function that is calling |
| this code. */ |
| |
| static void |
| write_types_local_user_process_field (type_p f, const struct walk_type_data *d) |
| { |
| switch (f->kind) |
| { |
| case TYPE_POINTER: |
| case TYPE_STRUCT: |
| case TYPE_UNION: |
| case TYPE_LANG_STRUCT: |
| case TYPE_STRING: |
| oprintf (d->of, "%*s op (&(%s), cookie);\n", d->indent, "", d->val); |
| break; |
| |
| case TYPE_USER_STRUCT: |
| if (d->in_ptr_field) |
| oprintf (d->of, "%*s op (&(%s), cookie);\n", d->indent, "", d->val); |
| else |
| oprintf (d->of, "%*s gt_pch_nx (&(%s), op, cookie);\n", |
| d->indent, "", d->val); |
| break; |
| |
| case TYPE_SCALAR: |
| break; |
| |
| case TYPE_ARRAY: |
| case TYPE_NONE: |
| case TYPE_UNDEFINED: |
| gcc_unreachable (); |
| } |
| } |
| |
| |
| /* Write a function to PCH walk all the fields of type S on OF. |
| D contains data needed by walk_type to recurse into the fields of S. */ |
| |
| static void |
| write_pch_user_walking_for_structure_body (type_p s, struct walk_type_data *d) |
| { |
| oprintf (d->of, "\nvoid\n"); |
| oprintf (d->of, "gt_pch_nx ("); |
| write_type_decl (d->of, s); |
| oprintf (d->of, "* x ATTRIBUTE_UNUSED,\n" |
| "\tATTRIBUTE_UNUSED gt_pointer_operator op,\n" |
| "\tATTRIBUTE_UNUSED void *cookie)\n"); |
| oprintf (d->of, "{\n"); |
| d->val = "(*x)"; |
| d->indent = 2; |
| d->process_field = write_types_local_user_process_field; |
| walk_type (s, d); |
| oprintf (d->of, "}\n"); |
| } |
| |
| |
| /* Emit the user-callable functions needed to mark all the types used |
| by the user structure S. PREFIX is the prefix to use to |
| distinguish ggc and pch markers. CHAIN_NEXT is set if S has the |
| chain_next option defined. D contains data needed to pass to |
| walk_type when traversing the fields of a type. |
| |
| For every type T referenced by S, two routines are generated: one |
| that takes 'T *', marks the pointer and calls the second routine, |
| which just marks the fields of T. */ |
| |
| static void |
| write_pch_user_walking_functions (type_p s, struct walk_type_data *d) |
| { |
| gcc_assert (s->kind == TYPE_USER_STRUCT); |
| |
| for (pair_p fld = s->u.s.fields; fld; fld = fld->next) |
| { |
| type_p fld_type = fld->type; |
| if (union_or_struct_p (fld_type)) |
| write_pch_user_walking_for_structure_body (fld_type, d); |
| } |
| } |
| |
| |
| /* process_field routine for local pointer-walking. */ |
| |
| static void |
| write_types_local_process_field (type_p f, const struct walk_type_data *d) |
| { |
| gcc_assert (d->have_this_obj); |
| switch (f->kind) |
| { |
| case TYPE_POINTER: |
| case TYPE_STRUCT: |
| case TYPE_UNION: |
| case TYPE_LANG_STRUCT: |
| case TYPE_STRING: |
| oprintf (d->of, "%*sif ((void *)(%s) == this_obj)\n", d->indent, "", |
| d->prev_val[3]); |
| oprintf (d->of, "%*s op (&(%s), cookie);\n", d->indent, "", d->val); |
| break; |
| |
| case TYPE_USER_STRUCT: |
| oprintf (d->of, "%*sif ((void *)(%s) == this_obj)\n", d->indent, "", |
| d->prev_val[3]); |
| if (d->in_ptr_field) |
| oprintf (d->of, "%*s op (&(%s), cookie);\n", d->indent, "", d->val); |
| else |
| oprintf (d->of, "%*s gt_pch_nx (&(%s), op, cookie);\n", |
| d->indent, "", d->val); |
| break; |
| |
| case TYPE_SCALAR: |
| break; |
| |
| case TYPE_ARRAY: |
| case TYPE_NONE: |
| case TYPE_UNDEFINED: |
| gcc_unreachable (); |
| } |
| } |
| |
| |
| /* For S, a structure that's part of ORIG_S, and using parameters |
| PARAM, write out a routine that: |
| - Is of type gt_note_pointers |
| - Calls PROCESS_FIELD on each field of S or its substructures. |
| */ |
| |
| static void |
| write_local_func_for_structure (const_type_p orig_s, type_p s) |
| { |
| struct walk_type_data d; |
| |
| /* Don't write fns for subclasses, only for the ultimate base class |
| within an inheritance hierarchy. */ |
| if (s->u.s.base_class) |
| return; |
| |
| memset (&d, 0, sizeof (d)); |
| d.of = get_output_file_for_structure (s); |
| d.process_field = write_types_local_process_field; |
| d.opt = s->u.s.opt; |
| d.line = &s->u.s.line; |
| d.bitmap = s->u.s.bitmap; |
| d.prev_val[0] = d.prev_val[2] = "*x"; |
| d.prev_val[1] = "not valid postage"; /* Guarantee an error. */ |
| d.prev_val[3] = "x"; |
| d.val = "(*x)"; |
| d.fn_wants_lvalue = true; |
| |
| oprintf (d.of, "\n"); |
| oprintf (d.of, "void\n"); |
| oprintf (d.of, "gt_pch_p_"); |
| output_mangled_typename (d.of, orig_s); |
| oprintf (d.of, " (ATTRIBUTE_UNUSED void *this_obj,\n" |
| "\tvoid *x_p,\n" |
| "\tATTRIBUTE_UNUSED gt_pointer_operator op,\n" |
| "\tATTRIBUTE_UNUSED void *cookie)\n"); |
| oprintf (d.of, "{\n"); |
| oprintf (d.of, " %s %s * x ATTRIBUTE_UNUSED = (%s %s *)x_p;\n", |
| s->kind == TYPE_UNION ? "union" : "struct", s->u.s.tag, |
| s->kind == TYPE_UNION ? "union" : "struct", s->u.s.tag); |
| d.indent = 2; |
| d.have_this_obj = true; |
| |
| if (s->kind != TYPE_USER_STRUCT) |
| walk_type (s, &d); |
| else |
| { |
| /* User structures have no fields to walk. Simply generate a |
| call to the user-provided PCH walker. */ |
| oprintf (d.of, "%*sif ((void *)(%s) == this_obj)\n", d.indent, "", |
| d.prev_val[3]); |
| oprintf (d.of, "%*s gt_pch_nx (&(%s), op, cookie);\n", |
| d.indent, "", d.val); |
| } |
| |
| oprintf (d.of, "}\n"); |
| |
| /* Write user-callable entry points for the PCH walking routines. */ |
| if (orig_s->kind == TYPE_USER_STRUCT) |
| write_pch_user_walking_functions (s, &d); |
| |
| for (options_p o = s->u.s.opt; o; o = o->next) |
| if (strcmp (o->name, "for_user") == 0) |
| { |
| write_pch_user_walking_for_structure_body (s, &d); |
| break; |
| } |
| } |
| |
| /* Write out local marker routines for STRUCTURES and PARAM_STRUCTS. */ |
| |
| static void |
| write_local (outf_p output_header, type_p structures) |
| { |
| type_p s; |
| |
| if (!output_header) |
| return; |
| |
| oprintf (output_header, "\n/* Local pointer-walking routines. */\n"); |
| for (s = structures; s; s = s->next) |
| if (s->gc_used == GC_POINTED_TO || s->gc_used == GC_MAYBE_POINTED_TO) |
| { |
| options_p opt; |
| |
| if (s->u.s.line.file == NULL) |
| continue; |
| for (opt = s->u.s.opt; opt; opt = opt->next) |
| if (strcmp (opt->name, "ptr_alias") == 0 |
| && opt->kind == OPTION_TYPE) |
| { |
| const_type_p const t = (const_type_p) opt->info.type; |
| if (t->kind == TYPE_STRUCT |
| || t->kind == TYPE_UNION || t->kind == TYPE_LANG_STRUCT) |
| { |
| oprintf (output_header, "#define gt_pch_p_"); |
| output_mangled_typename (output_header, s); |
| oprintf (output_header, " gt_pch_p_"); |
| output_mangled_typename (output_header, t); |
| oprintf (output_header, "\n"); |
| } |
| else |
| error_at_line (&s->u.s.line, |
| "structure alias is not a structure"); |
| break; |
| } |
| if (opt) |
| continue; |
| |
| /* Declare the marker procedure only once. */ |
| oprintf (output_header, "extern void gt_pch_p_"); |
| output_mangled_typename (output_header, s); |
| oprintf (output_header, |
| "\n (void *, void *, gt_pointer_operator, void *);\n"); |
| |
| if (s->kind == TYPE_LANG_STRUCT) |
| { |
| type_p ss; |
| for (ss = s->u.s.lang_struct; ss; ss = ss->next) |
| write_local_func_for_structure (s, ss); |
| } |
| else |
| write_local_func_for_structure (s, s); |
| } |
| } |
| |
| /* Nonzero if S is a type for which typed GC allocators should be output. */ |
| |
| #define USED_BY_TYPED_GC_P(s) \ |
| ((s->kind == TYPE_POINTER \ |
| && (s->u.p->gc_used == GC_POINTED_TO \ |
| || s->u.p->gc_used == GC_USED)) \ |
| || (union_or_struct_p (s) \ |
| && ((s)->gc_used == GC_POINTED_TO \ |
| || ((s)->gc_used == GC_MAYBE_POINTED_TO \ |
| && s->u.s.line.file != NULL) \ |
| || ((s)->gc_used == GC_USED \ |
| && !startswith (s->u.s.tag, "anonymous")) \ |
| || (s->u.s.base_class && opts_have (s->u.s.opt, "tag"))))) |
| |
| |
| |
| /* Might T contain any non-pointer elements? */ |
| |
| static int |
| contains_scalar_p (type_p t) |
| { |
| switch (t->kind) |
| { |
| case TYPE_STRING: |
| case TYPE_POINTER: |
| return 0; |
| case TYPE_ARRAY: |
| return contains_scalar_p (t->u.a.p); |
| case TYPE_USER_STRUCT: |
| /* User-marked structures will typically contain pointers. */ |
| return 0; |
| default: |
| /* Could also check for structures that have no non-pointer |
| fields, but there aren't enough of those to worry about. */ |
| return 1; |
| } |
| } |
| |
| /* Mangle INPF and print it to F. */ |
| |
| static void |
| put_mangled_filename (outf_p f, const input_file *inpf) |
| { |
| /* The call to get_output_file_name may indirectly update fn since |
| get_output_file_with_visibility caches its result inside, so we |
| need the CONST_CAST. */ |
| const char *name = get_output_file_name (CONST_CAST (input_file*, inpf)); |
| if (!f || !name) |
| return; |
| for (; *name != 0; name++) |
| if (ISALNUM (*name)) |
| oprintf (f, "%c", *name); |
| else |
| oprintf (f, "%c", '_'); |
| } |
| |
| /* Finish off the currently-created root tables in FLP. PFX, TNAME, |
| LASTNAME, and NAME are all strings to insert in various places in |
| the resulting code. */ |
| |
| static void |
| finish_root_table (struct flist *flp, const char *pfx, const char *lastname, |
| const char *tname, const char *name) |
| { |
| struct flist *fli2; |
| |
| for (fli2 = flp; fli2; fli2 = fli2->next) |
| if (fli2->started_p) |
| { |
| oprintf (fli2->f, " %s\n", lastname); |
| oprintf (fli2->f, "};\n\n"); |
| } |
| |
| for (fli2 = flp; fli2 && base_files; fli2 = fli2->next) |
| if (fli2->started_p) |
| { |
| lang_bitmap bitmap = get_lang_bitmap (fli2->file); |
| int fnum; |
| |
| for (fnum = 0; bitmap != 0; fnum++, bitmap >>= 1) |
| if (bitmap & 1) |
| { |
| oprintf (base_files[fnum], |
| "extern const struct %s gt_%s_", tname, pfx); |
| put_mangled_filename (base_files[fnum], fli2->file); |
| oprintf (base_files[fnum], "[];\n"); |
| } |
| } |
| |
| { |
| size_t fnum; |
| for (fnum = 0; base_files && fnum < num_lang_dirs; fnum++) |
| oprintf (base_files[fnum], |
| "EXPORTED_CONST struct %s * const %s[] = {\n", tname, name); |
| } |
| |
| |
| for (fli2 = flp; fli2; fli2 = fli2->next) |
| if (fli2->started_p) |
| { |
| lang_bitmap bitmap = get_lang_bitmap (fli2->file); |
| int fnum; |
| |
| fli2->started_p = 0; |
| |
| for (fnum = 0; base_files && bitmap != 0; fnum++, bitmap >>= 1) |
| if (bitmap & 1) |
| { |
| oprintf (base_files[fnum], " gt_%s_", pfx); |
| put_mangled_filename (base_files[fnum], fli2->file); |
| oprintf (base_files[fnum], ",\n"); |
| } |
| } |
| |
| { |
| size_t fnum; |
| for (fnum = 0; base_files && fnum < num_lang_dirs; fnum++) |
| { |
| oprintf (base_files[fnum], " NULL\n"); |
| oprintf (base_files[fnum], "};\n"); |
| } |
| } |
| } |
| |
| /* Finish off the created gt_clear_caches_file_c functions. */ |
| |
| static void |
| finish_cache_funcs (flist *flp) |
| { |
| struct flist *fli2; |
| |
| for (fli2 = flp; fli2; fli2 = fli2->next) |
| if (fli2->started_p) |
| { |
| oprintf (fli2->f, "}\n\n"); |
| } |
| |
| for (fli2 = flp; fli2 && base_files; fli2 = fli2->next) |
| if (fli2->started_p) |
| { |
| lang_bitmap bitmap = get_lang_bitmap (fli2->file); |
| int fnum; |
| |
| for (fnum = 0; bitmap != 0; fnum++, bitmap >>= 1) |
| if (bitmap & 1) |
| { |
| oprintf (base_files[fnum], "extern void gt_clear_caches_"); |
| put_mangled_filename (base_files[fnum], fli2->file); |
| oprintf (base_files[fnum], " ();\n"); |
| } |
| } |
| |
| for (size_t fnum = 0; base_files && fnum < num_lang_dirs; fnum++) |
| oprintf (base_files[fnum], "void\ngt_clear_caches ()\n{\n"); |
| |
| for (fli2 = flp; fli2; fli2 = fli2->next) |
| if (fli2->started_p) |
| { |
| lang_bitmap bitmap = get_lang_bitmap (fli2->file); |
| int fnum; |
| |
| fli2->started_p = 0; |
| |
| for (fnum = 0; base_files && bitmap != 0; fnum++, bitmap >>= 1) |
| if (bitmap & 1) |
| { |
| oprintf (base_files[fnum], " gt_clear_caches_"); |
| put_mangled_filename (base_files[fnum], fli2->file); |
| oprintf (base_files[fnum], " ();\n"); |
| } |
| } |
| |
| for (size_t fnum = 0; base_files && fnum < num_lang_dirs; fnum++) |
| { |
| oprintf (base_files[fnum], "}\n"); |
| } |
| } |
| |
| /* Write the first three fields (pointer, count and stride) for |
| root NAME to F. V and LINE are as for write_root. |
| |
| Return true if the entry could be written; return false on error. */ |
| |
| static bool |
| start_root_entry (outf_p f, pair_p v, const char *name, struct fileloc *line) |
| { |
| type_p ap; |
| |
| if (!v) |
| { |
| error_at_line (line, "`%s' is too complex to be a root", name); |
| return false; |
| } |
| |
| oprintf (f, " {\n"); |
| oprintf (f, " &%s,\n", name); |
| oprintf (f, " 1"); |
| |
| for (ap = v->type; ap->kind == TYPE_ARRAY; ap = ap->u.a.p) |
| if (ap->u.a.len[0]) |
| oprintf (f, " * (%s)", ap->u.a.len); |
| else if (ap == v->type) |
| oprintf (f, " * ARRAY_SIZE (%s)", v->name); |
| oprintf (f, ",\n"); |
| oprintf (f, " sizeof (%s", v->name); |
| for (ap = v->type; ap->kind == TYPE_ARRAY; ap = ap->u.a.p) |
| oprintf (f, "[0]"); |
| oprintf (f, "),\n"); |
| return true; |
| } |
| |
| /* A subroutine of write_root for writing the roots for field FIELD_NAME, |
| which has type FIELD_TYPE. Parameters F to EMIT_PCH are the parameters |
| of the caller. */ |
| |
| static void |
| write_field_root (outf_p f, pair_p v, type_p type, const char *name, |
| int has_length, struct fileloc *line, |
| bool emit_pch, type_p field_type, const char *field_name) |
| { |
| struct pair newv; |
| /* If the field reference is relative to V, rather than to some |
| subcomponent of V, we can mark any subarrays with a single stride. |
| We're effectively treating the field as a global variable in its |
| own right. */ |
| if (v && type == v->type) |
| { |
| newv = *v; |
| newv.type = field_type; |
| newv.name = ACONCAT ((v->name, ".", field_name, NULL)); |
| v = &newv; |
| } |
| /* Otherwise, any arrays nested in the structure are too complex to |
| handle. */ |
| else if (field_type->kind == TYPE_ARRAY) |
| v = NULL; |
| write_root (f, v, field_type, ACONCAT ((name, ".", field_name, NULL)), |
| has_length, line, emit_pch); |
| } |
| |
| /* Write out to F the table entry and any marker routines needed to |
| mark NAME as TYPE. V can be one of three values: |
| |
| - null, if NAME is too complex to represent using a single |
| count and stride. In this case, it is an error for NAME to |
| contain any gc-ed data. |
| |
| - the outermost array that contains NAME, if NAME is part of an array. |
| |
| - the C variable that contains NAME, if NAME is not part of an array. |
| |
| LINE is the line of the C source that declares the root variable. |
| HAS_LENGTH is nonzero iff V was a variable-length array. */ |
| |
| static void |
| write_root (outf_p f, pair_p v, type_p type, const char *name, int has_length, |
| struct fileloc *line, bool emit_pch) |
| { |
| switch (type->kind) |
| { |
| case TYPE_STRUCT: |
| { |
| pair_p fld; |
| for (fld = type->u.s.fields; fld; fld = fld->next) |
| { |
| int skip_p = 0; |
| const char *desc = NULL; |
| options_p o; |
| |
| for (o = fld->opt; o; o = o->next) |
| if (strcmp (o->name, "skip") == 0) |
| skip_p = 1; |
| else if (strcmp (o->name, "desc") == 0 |
| && o->kind == OPTION_STRING) |
| desc = o->info.string; |
| else |
| error_at_line (line, |
| "field `%s' of global `%s' has unknown option `%s'", |
| fld->name, name, o->name); |
| |
| if (skip_p) |
| continue; |
| else if (desc && fld->type->kind == TYPE_UNION) |
| { |
| pair_p validf = NULL; |
| pair_p ufld; |
| |
| for (ufld = fld->type->u.s.fields; ufld; ufld = ufld->next) |
| { |
| const char *tag = NULL; |
| options_p oo; |
| for (oo = ufld->opt; oo; oo = oo->next) |
| if (strcmp (oo->name, "tag") == 0 |
| && oo->kind == OPTION_STRING) |
| tag = oo->info.string; |
| if (tag == NULL || strcmp (tag, desc) != 0) |
| continue; |
| if (validf != NULL) |
| error_at_line (line, |
| "both `%s.%s.%s' and `%s.%s.%s' have tag `%s'", |
| name, fld->name, validf->name, |
| name, fld->name, ufld->name, tag); |
| validf = ufld; |
| } |
| if (validf != NULL) |
| write_field_root (f, v, type, name, 0, line, emit_pch, |
| validf->type, |
| ACONCAT ((fld->name, ".", |
| validf->name, NULL))); |
| } |
| else if (desc) |
| error_at_line (line, |
| "global `%s.%s' has `desc' option but is not union", |
| name, fld->name); |
| else |
| write_field_root (f, v, type, name, 0, line, emit_pch, fld->type, |
| fld->name); |
| } |
| } |
| break; |
| |
| case TYPE_ARRAY: |
| { |
| char *newname; |
| newname = xasprintf ("%s[0]", name); |
| write_root (f, v, type->u.a.p, newname, has_length, line, emit_pch); |
| free (newname); |
| } |
| break; |
| |
| case TYPE_USER_STRUCT: |
| error_at_line (line, "`%s' must be a pointer type, because it is " |
| "a GC root and its type is marked with GTY((user))", |
| v->name); |
| break; |
| |
| case TYPE_POINTER: |
| { |
| const_type_p tp; |
| |
| if (!start_root_entry (f, v, name, line)) |
| return; |
| |
| tp = type->u.p; |
| |
| if (!has_length && union_or_struct_p (tp)) |
| { |
| tp = get_ultimate_base_class (tp); |
| const char *id_for_tag = filter_type_name (tp->u.s.tag); |
| oprintf (f, " >_ggc_mx_%s,\n", id_for_tag); |
| if (emit_pch) |
| oprintf (f, " >_pch_nx_%s", id_for_tag); |
| else |
| oprintf (f, " NULL"); |
| if (id_for_tag != tp->u.s.tag) |
| free (CONST_CAST (char *, id_for_tag)); |
| } |
| else if (has_length |
| && (tp->kind == TYPE_POINTER || union_or_struct_p (tp))) |
| { |
| oprintf (f, " >_ggc_ma_%s,\n", name); |
| if (emit_pch) |
| oprintf (f, " >_pch_na_%s", name); |
| else |
| oprintf (f, " NULL"); |
| } |
| else |
| { |
| error_at_line (line, |
| "global `%s' is pointer to unimplemented type", |
| name); |
| } |
| oprintf (f, "\n },\n"); |
| } |
| break; |
| |
| case TYPE_STRING: |
| { |
| if (!start_root_entry (f, v, name, line)) |
| return; |
| |
| oprintf (f, " (gt_pointer_walker) >_ggc_m_S,\n"); |
| oprintf (f, " (gt_pointer_walker) >_pch_n_S\n"); |
| oprintf (f, " },\n"); |
| } |
| break; |
| |
| case TYPE_SCALAR: |
| break; |
| |
| case TYPE_NONE: |
| case TYPE_UNDEFINED: |
| case TYPE_UNION: |
| case TYPE_LANG_STRUCT: |
| error_at_line (line, "global `%s' is unimplemented type", name); |
| } |
| } |
| |
| /* This generates a routine to walk an array. */ |
| |
| static void |
| write_array (outf_p f, pair_p v, const struct write_types_data *wtd) |
| { |
| struct walk_type_data d; |
| char *prevval3; |
| |
| memset (&d, 0, sizeof (d)); |
| d.of = f; |
| d.cookie = wtd; |
| d.indent = 2; |
| d.line = &v->line; |
| d.opt = v->opt; |
| d.bitmap = get_lang_bitmap (v->line.file); |
| |
| d.prev_val[3] = prevval3 = xasprintf ("&%s", v->name); |
| |
| if (wtd->param_prefix) |
| { |
| oprintf (f, "static void gt_%sa_%s\n", wtd->param_prefix, v->name); |
| oprintf (f, " (void *, void *, gt_pointer_operator, void *);\n"); |
| oprintf (f, "static void gt_%sa_%s (ATTRIBUTE_UNUSED void *this_obj,\n", |
| wtd->param_prefix, v->name); |
| oprintf (d.of, |
| " ATTRIBUTE_UNUSED void *x_p,\n" |
| " ATTRIBUTE_UNUSED gt_pointer_operator op,\n" |
| " ATTRIBUTE_UNUSED void * cookie)\n"); |
| oprintf (d.of, "{\n"); |
| d.prev_val[0] = d.prev_val[1] = d.prev_val[2] = d.val = v->name; |
| d.process_field = write_types_local_process_field; |
| d.have_this_obj = true; |
| walk_type (v->type, &d); |
| oprintf (f, "}\n\n"); |
| } |
| |
| d.opt = v->opt; |
| oprintf (f, "static void gt_%sa_%s (void *);\n", wtd->prefix, v->name); |
| oprintf (f, "static void\ngt_%sa_%s (ATTRIBUTE_UNUSED void *x_p)\n", |
| wtd->prefix, v->name); |
| oprintf (f, "{\n"); |
| d.prev_val[0] = d.prev_val[1] = d.prev_val[2] = d.val = v->name; |
| d.process_field = write_types_process_field; |
| d.have_this_obj = false; |
| walk_type (v->type, &d); |
| free (prevval3); |
| oprintf (f, "}\n\n"); |
| } |
| |
| /* Output a table describing the locations and types of VARIABLES. */ |
| |
| static void |
| write_roots (pair_p variables, bool emit_pch) |
| { |
| pair_p v; |
| struct flist *flp = NULL; |
| |
| for (v = variables; v; v = v->next) |
| { |
| outf_p f = |
| get_output_file_with_visibility (CONST_CAST (input_file*, |
| v->line.file)); |
| struct flist *fli; |
| const char *length = NULL; |
| int deletable_p = 0; |
| options_p o; |
| for (o = v->opt; o; o = o->next) |
| if (strcmp (o->name, "length") == 0 |
| && o->kind == OPTION_STRING) |
| length = o->info.string; |
| else if (strcmp (o->name, "deletable") == 0) |
| deletable_p = 1; |
| else if (strcmp (o->name, "cache") == 0) |
| ; |
| else |
| error_at_line (&v->line, |
| "global `%s' has unknown option `%s'", |
| v->name, o->name); |
| |
| for (fli = flp; fli; fli = fli->next) |
| if (fli->f == f && f) |
| break; |
| if (fli == NULL) |
| { |
| fli = XNEW (struct flist); |
| fli->f = f; |
| fli->next = flp; |
| fli->started_p = 0; |
| fli->file = v->line.file; |
| gcc_assert (fli->file); |
| flp = fli; |
| |
| oprintf (f, "\n/* GC roots. */\n\n"); |
| } |
| |
| if (!deletable_p |
| && length |
| && v->type->kind == TYPE_POINTER |
| && (v->type->u.p->kind == TYPE_POINTER |
| || v->type->u.p->kind == TYPE_STRUCT)) |
| { |
| write_array (f, v, &ggc_wtd); |
| write_array (f, v, &pch_wtd); |
| } |
| } |
| |
| for (v = variables; v; v = v->next) |
| { |
| outf_p f = get_output_file_with_visibility (CONST_CAST (input_file*, |
| v->line.file)); |
| struct flist *fli; |
| int skip_p = 0; |
| int length_p = 0; |
| options_p o; |
| |
| for (o = v->opt; o; o = o->next) |
| if (strcmp (o->name, "length") == 0) |
| length_p = 1; |
| else if (strcmp (o->name, "deletable") == 0) |
| skip_p = 1; |
| |
| if (skip_p) |
| continue; |
| |
| for (fli = flp; fli; fli = fli->next) |
| if (fli->f == f) |
| break; |
| if (!fli->started_p) |
| { |
| fli->started_p = 1; |
| |
| oprintf (f, "EXPORTED_CONST struct ggc_root_tab gt_ggc_r_"); |
| put_mangled_filename (f, v->line.file); |
| oprintf (f, "[] = {\n"); |
| } |
| |
| write_root (f, v, v->type, v->name, length_p, &v->line, emit_pch); |
| } |
| |
| finish_root_table (flp, "ggc_r", "LAST_GGC_ROOT_TAB", "ggc_root_tab", |
| "gt_ggc_rtab"); |
| |
| for (v = variables; v; v = v->next) |
| { |
| outf_p f = get_output_file_with_visibility (CONST_CAST (input_file*, |
| v->line.file)); |
| struct flist *fli; |
| int skip_p = 1; |
| options_p o; |
| |
| for (o = v->opt; o; o = o->next) |
| if (strcmp (o->name, "deletable") == 0) |
| skip_p = 0; |
| |
| if (skip_p) |
| continue; |
| |
| for (fli = flp; fli; fli = fli->next) |
| if (fli->f == f) |
| break; |
| if (!fli->started_p) |
| { |
| fli->started_p = 1; |
| |
| oprintf (f, "EXPORTED_CONST struct ggc_root_tab gt_ggc_rd_"); |
| put_mangled_filename (f, v->line.file); |
| oprintf (f, "[] = {\n"); |
| } |
| |
| oprintf (f, " { &%s, 1, sizeof (%s), NULL, NULL },\n", |
| v->name, v->name); |
| } |
| |
| finish_root_table (flp, "ggc_rd", "LAST_GGC_ROOT_TAB", "ggc_root_tab", |
| "gt_ggc_deletable_rtab"); |
| |
| for (v = variables; v; v = v->next) |
| { |
| outf_p f = get_output_file_with_visibility (CONST_CAST (input_file*, |
| v->line.file)); |
| struct flist *fli; |
| bool cache = false; |
| options_p o; |
| |
| for (o = v->opt; o; o = o->next) |
| if (strcmp (o->name, "cache") == 0) |
| cache = true; |
| if (!cache) |
| continue; |
| |
| for (fli = flp; fli; fli = fli->next) |
| if (fli->f == f) |
| break; |
| if (!fli->started_p) |
| { |
| fli->started_p = 1; |
| |
| oprintf (f, "void\ngt_clear_caches_"); |
| put_mangled_filename (f, v->line.file); |
| oprintf (f, " ()\n{\n"); |
| } |
| |
| oprintf (f, " gt_cleare_cache (%s);\n", v->name); |
| } |
| |
| finish_cache_funcs (flp); |
| |
| if (!emit_pch) |
| return; |
| |
| for (v = variables; v; v = v->next) |
| { |
| outf_p f = get_output_file_with_visibility (CONST_CAST (input_file*, |
| v->line.file)); |
| struct flist *fli; |
| int skip_p = 0; |
| options_p o; |
| |
| for (o = v->opt; o; o = o->next) |
| if (strcmp (o->name, "deletable") == 0) |
| { |
| skip_p = 1; |
| break; |
| } |
| |
| if (skip_p) |
| continue; |
| |
| if (!contains_scalar_p (v->type)) |
| continue; |
| |
| for (fli = flp; fli; fli = fli->next) |
| if (fli->f == f) |
| break; |
| if (!fli->started_p) |
| { |
| fli->started_p = 1; |
| |
| oprintf (f, "EXPORTED_CONST struct ggc_root_tab gt_pch_rs_"); |
| put_mangled_filename (f, v->line.file); |
| oprintf (f, "[] = {\n"); |
| } |
| |
| oprintf (f, " { &%s, 1, sizeof (%s), NULL, NULL },\n", |
| v->name, v->name); |
| } |
| |
| finish_root_table (flp, "pch_rs", "LAST_GGC_ROOT_TAB", "ggc_root_tab", |
| "gt_pch_scalar_rtab"); |
| } |
| |
| /* Prints not-as-ugly version of a typename of T to OF. Trades the uniquness |
| guaranteee for somewhat increased readability. If name conflicts do happen, |
| this funcion will have to be adjusted to be more like |
| output_mangled_typename. */ |
| |
| #define INDENT 2 |
| |
| /* Dumps the value of typekind KIND. */ |
| |
| static void |
| dump_typekind (int indent, enum typekind kind) |
| { |
| printf ("%*ckind = ", indent, ' '); |
| switch (kind) |
| { |
| case TYPE_SCALAR: |
| printf ("TYPE_SCALAR"); |
| break; |
| case TYPE_STRING: |
| printf ("TYPE_STRING"); |
| break; |
| case TYPE_STRUCT: |
| printf ("TYPE_STRUCT"); |
| break; |
| case TYPE_UNDEFINED: |
| printf ("TYPE_UNDEFINED"); |
| break; |
| case TYPE_USER_STRUCT: |
| printf ("TYPE_USER_STRUCT"); |
| break; |
| case TYPE_UNION: |
| printf ("TYPE_UNION"); |
| break; |
| case TYPE_POINTER: |
| printf ("TYPE_POINTER"); |
| break; |
| case TYPE_ARRAY: |
| printf ("TYPE_ARRAY"); |
| break; |
| case TYPE_LANG_STRUCT: |
| printf ("TYPE_LANG_STRUCT"); |
| break; |
| default: |
| gcc_unreachable (); |
| } |
| printf ("\n"); |
| } |
| |
| /* Dumps the value of GC_USED flag. */ |
| |
| static void |
| dump_gc_used (int indent, enum gc_used_enum gc_used) |
| { |
| printf ("%*cgc_used = ", indent, ' '); |
| switch (gc_used) |
| { |
| case GC_UNUSED: |
| printf ("GC_UNUSED"); |
| break; |
| case GC_USED: |
| printf ("GC_USED"); |
| break; |
| case GC_MAYBE_POINTED_TO: |
| printf ("GC_MAYBE_POINTED_TO"); |
| break; |
| case GC_POINTED_TO: |
| printf ("GC_POINTED_TO"); |
| break; |
| default: |
| gcc_unreachable (); |
| } |
| printf ("\n"); |
| } |
| |
| /* Dumps the type options OPT. */ |
| |
| static void |
| dump_options (int indent, options_p opt) |
| { |
| options_p o; |
| printf ("%*coptions = ", indent, ' '); |
| o = opt; |
| while (o) |
| { |
| switch (o->kind) |
| { |
| case OPTION_STRING: |
| printf ("%s:string %s ", o->name, o->info.string); |
| break; |
| case OPTION_TYPE: |
| printf ("%s:type ", o->name); |
| dump_type (indent+1, o->info.type); |
| break; |
| case OPTION_NESTED: |
| printf ("%s:nested ", o->name); |
| break; |
| case OPTION_NONE: |
| gcc_unreachable (); |
| } |
| o = o->next; |
| } |
| printf ("\n"); |
| } |
| |
| /* Dumps the source file location in LINE. */ |
| |
| static void |
| dump_fileloc (int indent, struct fileloc line) |
| { |
| printf ("%*cfileloc: file = %s, line = %d\n", indent, ' ', |
| get_input_file_name (line.file), |
| line.line); |
| } |
| |
| /* Recursively dumps the struct, union, or a language-specific |
| struct T. */ |
| |
| static void |
| dump_type_u_s (int indent, type_p t) |
| { |
| pair_p fields; |
| |
| gcc_assert (union_or_struct_p (t)); |
| printf ("%*cu.s.tag = %s\n", indent, ' ', t->u.s.tag); |
| dump_fileloc (indent, t->u.s.line); |
| printf ("%*cu.s.fields =\n", indent, ' '); |
| fields = t->u.s.fields; |
| while (fields) |
| { |
| dump_pair (indent + INDENT, fields); |
| fields = fields->next; |
| } |
| printf ("%*cend of fields of type %p\n", indent, ' ', (void *) t); |
| dump_options (indent, t->u.s.opt); |
| printf ("%*cu.s.bitmap = %X\n", indent, ' ', t->u.s.bitmap); |
| if (t->kind == TYPE_LANG_STRUCT) |
| { |
| printf ("%*cu.s.lang_struct:\n", indent, ' '); |
| dump_type_list (indent + INDENT, t->u.s.lang_struct); |
| } |
| } |
| |
| /* Recursively dumps the array T. */ |
| |
| static void |
| dump_type_u_a (int indent, type_p t) |
| { |
| gcc_assert (t->kind == TYPE_ARRAY); |
| printf ("%*clen = %s, u.a.p:\n", indent, ' ', t->u.a.len); |
| dump_type_list (indent + INDENT, t->u.a.p); |
| } |
| |
| /* Recursively dumps the type list T. */ |
| |
| static void |
| dump_type_list (int indent, type_p t) |
| { |
| type_p p = t; |
| while (p) |
| { |
| dump_type (indent, p); |
| p = p->next; |
| } |
| } |
| |
| static htab_t seen_types; |
| |
| /* Recursively dumps the type T if it was not dumped previously. */ |
| |
| static void |
| dump_type (int indent, type_p t) |
| { |
| PTR *slot; |
| |
| printf ("%*cType at %p: ", indent, ' ', (void *) t); |
| if (t->kind == TYPE_UNDEFINED) |
| { |
| gcc_assert (t->gc_used == GC_UNUSED); |
| printf ("undefined.\n"); |
| return; |
| } |
| |
| if (seen_types == NULL) |
| seen_types = htab_create (100, htab_hash_pointer, htab_eq_pointer, NULL); |
| |
| slot = htab_find_slot (seen_types, t, INSERT); |
| if (*slot != NULL) |
| { |
| printf ("already seen.\n"); |
| return; |
| } |
| *slot = t; |
| printf ("\n"); |
| |
| dump_typekind (indent, t->kind); |
| printf ("%*cpointer_to = %p\n", indent + INDENT, ' ', |
| (void *) t->pointer_to); |
| dump_gc_used (indent + INDENT, t->gc_used); |
| switch (t->kind) |
| { |
| case TYPE_SCALAR: |
| printf ("%*cscalar_is_char = %s\n", indent + INDENT, ' ', |
| t->u.scalar_is_char ? "true" : "false"); |
| break; |
| case TYPE_STRING: |
| break; |
| case TYPE_STRUCT: |
| case TYPE_UNION: |
| case TYPE_LANG_STRUCT: |
| case TYPE_USER_STRUCT: |
| dump_type_u_s (indent + INDENT, t); |
| break; |
| case TYPE_POINTER: |
| printf ("%*cp:\n", indent + INDENT, ' '); |
| dump_type (indent + INDENT, t->u.p); |
| break; |
| case TYPE_ARRAY: |
| dump_type_u_a (indent + INDENT, t); |
| break; |
| default: |
| gcc_unreachable (); |
| } |
| printf ("%*cEnd of type at %p\n", indent, ' ', (void *) t); |
| } |
| |
| /* Dumps the pair P. */ |
| |
| static void |
| dump_pair (int indent, pair_p p) |
| { |
| printf ("%*cpair: name = %s\n", indent, ' ', p->name); |
| dump_type (indent, p->type); |
| dump_fileloc (indent, p->line); |
| dump_options (indent, p->opt); |
| printf ("%*cEnd of pair %s\n", indent, ' ', p->name); |
| } |
| |
| /* Dumps the list of pairs PP. */ |
| |
| static void |
| dump_pair_list (const char *name, pair_p pp) |
| { |
| pair_p p; |
| printf ("%s:\n", name); |
| for (p = pp; p != NULL; p = p->next) |
| dump_pair (0, p); |
| printf ("End of %s\n\n", name); |
| } |
| |
| /* Dumps the STRUCTURES. */ |
| |
| static void |
| dump_structures (const char *name, type_p structures) |
| { |
| printf ("%s:\n", name); |
| dump_type_list (0, structures); |
| printf ("End of %s\n\n", name); |
| } |
| |
| /* Dumps the internal structures of gengtype. This is useful to debug |
| gengtype itself, or to understand what it does, e.g. for plugin |
| developers. */ |
| |
| static void |
| dump_everything (void) |
| { |
| dump_pair_list ("typedefs", typedefs); |
| dump_structures ("structures", structures); |
| dump_pair_list ("variables", variables); |
| |
| /* Allocated with the first call to dump_type. */ |
| htab_delete (seen_types); |
| } |
| |
| |
| |
| /* Option specification for getopt_long. */ |
| static const struct option gengtype_long_options[] = { |
| {"help", no_argument, NULL, 'h'}, |
| {"version", no_argument, NULL, 'V'}, |
| {"verbose", no_argument, NULL, 'v'}, |
| {"dump", no_argument, NULL, 'd'}, |
| {"debug", no_argument, NULL, 'D'}, |
| {"plugin", required_argument, NULL, 'P'}, |
| {"srcdir", required_argument, NULL, 'S'}, |
| {"backupdir", required_argument, NULL, 'B'}, |
| {"inputs", required_argument, NULL, 'I'}, |
| {"read-state", required_argument, NULL, 'r'}, |
| {"write-state", required_argument, NULL, 'w'}, |
| /* Terminating NULL placeholder. */ |
| {NULL, no_argument, NULL, 0}, |
| }; |
| |
| |
| static void |
| print_usage (void) |
| { |
| printf ("Usage: %s\n", progname); |
| printf ("\t -h | --help " " \t# Give this help.\n"); |
| printf ("\t -D | --debug " |
| " \t# Give debug output to debug %s itself.\n", progname); |
| printf ("\t -V | --version " " \t# Give version information.\n"); |
| printf ("\t -v | --verbose \t# Increase verbosity. Can be given several times.\n"); |
| printf ("\t -d | --dump " " \t# Dump state for debugging.\n"); |
| printf ("\t -P | --plugin <output-file> <plugin-src> ... " |
| " \t# Generate for plugin.\n"); |
| printf ("\t -S | --srcdir <GCC-directory> " |
| " \t# Specify the GCC source directory.\n"); |
| printf ("\t -B | --backupdir <directory> " |
| " \t# Specify the backup directory for updated files.\n"); |
| printf ("\t -I | --inputs <input-list> " |
| " \t# Specify the file with source files list.\n"); |
| printf ("\t -w | --write-state <state-file> " " \t# Write a state file.\n"); |
| printf ("\t -r | --read-state <state-file> " " \t# Read a state file.\n"); |
| } |
| |
| static void |
| print_version (void) |
| { |
| printf ("%s %s%s\n", progname, pkgversion_string, version_string); |
| printf ("Report bugs: %s\n", bug_report_url); |
| } |
| |
| /* Parse the program options using getopt_long... */ |
| static void |
| parse_program_options (int argc, char **argv) |
| { |
| int opt = -1; |
| while ((opt = getopt_long (argc, argv, "hVvdP:S:B:I:w:r:D", |
| gengtype_long_options, NULL)) >= 0) |
| { |
| switch (opt) |
| { |
| case 'h': /* --help */ |
| print_usage (); |
| break; |
| case 'V': /* --version */ |
| print_version (); |
| break; |
| case 'd': /* --dump */ |
| do_dump = 1; |
| break; |
| case 'D': /* --debug */ |
| do_debug = 1; |
| break; |
| case 'v': /* --verbose */ |
| verbosity_level++; |
| break; |
| case 'P': /* --plugin */ |
| if (optarg) |
| plugin_output_filename = optarg; |
| else |
| fatal ("missing plugin output file name"); |
| break; |
| case 'S': /* --srcdir */ |
| if (optarg) |
| srcdir = optarg; |
| else |
| fatal ("missing source directory"); |
| srcdir_len = strlen (srcdir); |
| break; |
| case 'B': /* --backupdir */ |
| if (optarg) |
| backup_dir = optarg; |
| else |
| fatal ("missing backup directory"); |
| break; |
| case 'I': /* --inputs */ |
| if (optarg) |
| inputlist = optarg; |
| else |
| fatal ("missing input list"); |
| break; |
| case 'r': /* --read-state */ |
| if (optarg) |
| read_state_filename = optarg; |
| else |
| fatal ("missing read state file"); |
| DBGPRINTF ("read state %s\n", optarg); |
| break; |
| case 'w': /* --write-state */ |
| DBGPRINTF ("write state %s\n", optarg); |
| if (optarg) |
| write_state_filename = optarg; |
| else |
| fatal ("missing write state file"); |
| break; |
| default: |
| fprintf (stderr, "%s: unknown flag '%c'\n", progname, opt); |
| print_usage (); |
| fatal ("unexpected flag"); |
| } |
| }; |
| if (plugin_output_filename) |
| { |
| /* In plugin mode we require some input files. */ |
| int i = 0; |
| if (optind >= argc) |
| fatal ("no source files given in plugin mode"); |
| nb_plugin_files = argc - optind; |
| plugin_files = XNEWVEC (input_file*, nb_plugin_files); |
| for (i = 0; i < (int) nb_plugin_files; i++) |
| { |
| char *name = argv[i + optind]; |
| plugin_files[i] = input_file_by_name (name); |
| } |
| } |
| } |
| |
| |
| |
| /******* Manage input files. ******/ |
| |
| /* Hash table of unique input file names. */ |
| static htab_t input_file_htab; |
| |
| /* Find or allocate a new input_file by hash-consing it. */ |
| input_file* |
| input_file_by_name (const char* name) |
| { |
| PTR* slot; |
| input_file* f = NULL; |
| int namlen = 0; |
| if (!name) |
| return NULL; |
| namlen = strlen (name); |
| f = XCNEWVAR (input_file, sizeof (input_file)+namlen+2); |
| f->inpbitmap = 0; |
| f->inpoutf = NULL; |
| f->inpisplugin = false; |
| strcpy (f->inpname, name); |
| slot = htab_find_slot (input_file_htab, f, INSERT); |
| gcc_assert (slot != NULL); |
| if (*slot) |
| { |
| /* Already known input file. */ |
| free (f); |
| return (input_file*)(*slot); |
| } |
| /* New input file. */ |
| *slot = f; |
| return f; |
| } |
| |
| /* Hash table support routines for input_file-s. */ |
| static hashval_t |
| htab_hash_inputfile (const void *p) |
| { |
| const input_file *inpf = (const input_file *) p; |
| gcc_assert (inpf); |
| return htab_hash_string (get_input_file_name (inpf)); |
| } |
| |
| static int |
| htab_eq_inputfile (const void *x, const void *y) |
| { |
| const input_file *inpfx = (const input_file *) x; |
| const input_file *inpfy = (const input_file *) y; |
| gcc_assert (inpfx != NULL && inpfy != NULL); |
| return !filename_cmp (get_input_file_name (inpfx), get_input_file_name (inpfy)); |
| } |
| |
| |
| int |
| main (int argc, char **argv) |
| { |
| size_t i; |
| static struct fileloc pos = { NULL, 0 }; |
| outf_p output_header; |
| |
| /* Mandatory common initializations. */ |
| progname = "gengtype"; /* For fatal and messages. */ |
| /* Create the hash-table used to hash-cons input files. */ |
| input_file_htab = |
| htab_create (800, htab_hash_inputfile, htab_eq_inputfile, NULL); |
| /* Initialize our special input files. */ |
| this_file = input_file_by_name (__FILE__); |
| system_h_file = input_file_by_name ("system.h"); |
| /* Set the scalar_is_char union number for predefined scalar types. */ |
| scalar_nonchar.u.scalar_is_char = FALSE; |
| scalar_char.u.scalar_is_char = TRUE; |
| |
| parse_program_options (argc, argv); |
| |
| if (do_debug) |
| { |
| time_t now = (time_t) 0; |
| time (&now); |
| DBGPRINTF ("gengtype started pid %d at %s", |
| (int) getpid (), ctime (&now)); |
| } |
| |
| /* Parse the input list and the input files. */ |
| DBGPRINTF ("inputlist %s", inputlist); |
| if (read_state_filename) |
| { |
| if (inputlist) |
| fatal ("input list %s cannot be given with a read state file %s", |
| inputlist, read_state_filename); |
| read_state (read_state_filename); |
| DBGPRINT_COUNT_TYPE ("structures after read_state", structures); |
| } |
| else if (inputlist) |
| { |
| /* These types are set up with #define or else outside of where |
| we can see them. We should initialize them before calling |
| read_input_list. */ |
| #define POS_HERE(Call) do { pos.file = this_file; pos.line = __LINE__; \ |
| Call;} while (0) |
| POS_HERE (do_scalar_typedef ("CUMULATIVE_ARGS", &pos)); |
| POS_HERE (do_scalar_typedef ("REAL_VALUE_TYPE", &pos)); |
| POS_HERE (do_scalar_typedef ("FIXED_VALUE_TYPE", &pos)); |
| POS_HERE (do_scalar_typedef ("double_int", &pos)); |
| POS_HERE (do_scalar_typedef ("poly_int64_pod", &pos)); |
| POS_HERE (do_scalar_typedef ("offset_int", &pos)); |
| POS_HERE (do_scalar_typedef ("widest_int", &pos)); |
| POS_HERE (do_scalar_typedef ("int64_t", &pos)); |
| POS_HERE (do_scalar_typedef ("poly_int64", &pos)); |
| POS_HERE (do_scalar_typedef ("poly_uint64", &pos)); |
| POS_HERE (do_scalar_typedef ("uint64_t", &pos)); |
| POS_HERE (do_scalar_typedef ("uint32_t", &pos)); |
| POS_HERE (do_scalar_typedef ("uint8", &pos)); |
| POS_HERE (do_scalar_typedef ("uintptr_t", &pos)); |
| POS_HERE (do_scalar_typedef ("jword", &pos)); |
| POS_HERE (do_scalar_typedef ("JCF_u2", &pos)); |
| POS_HERE (do_scalar_typedef ("void", &pos)); |
| POS_HERE (do_scalar_typedef ("machine_mode", &pos)); |
| POS_HERE (do_scalar_typedef ("fixed_size_mode", &pos)); |
| POS_HERE (do_scalar_typedef ("CONSTEXPR", &pos)); |
| POS_HERE (do_typedef ("PTR", |
| create_pointer (resolve_typedef ("void", &pos)), |
| &pos)); |
| #undef POS_HERE |
| read_input_list (inputlist); |
| num_build_headers = 0; |
| for (i = 0; i < num_gt_files; i++) |
| { |
| const char *fname = get_input_file_name (gt_files[i]); |
| parse_file (fname); |
| DBGPRINTF ("parsed file #%d %s", (int) i, fname); |
| /* Check if this is a header file generated during the build. */ |
| int len = strlen (fname); |
| if (len >= 5 |
| && fname[0] == '.' |
| && IS_DIR_SEPARATOR (fname[1]) |
| && fname[len-2] == '.' |
| && fname[len-1] == 'h') |
| num_build_headers++; |
| } |
| if (verbosity_level >= 1) |
| printf ("%s parsed %d files with %d GTY types\n", |
| progname, (int) num_gt_files, type_count); |
| |
| DBGPRINT_COUNT_TYPE ("structures after parsing", structures); |
| } |
| else |
| fatal ("either an input list or a read state file should be given"); |
| if (hit_error) |
| return 1; |
| |
| |
| if (plugin_output_filename) |
| { |
| size_t ix = 0; |
| /* In plugin mode, we should have read a state file, and have |
| given at least one plugin file. */ |
| if (!read_state_filename) |
| fatal ("No read state given in plugin mode for %s", |
| plugin_output_filename); |
| |
| if (nb_plugin_files == 0 || !plugin_files) |
| fatal ("No plugin files given in plugin mode for %s", |
| plugin_output_filename); |
| |
| /* Parse our plugin files and augment the state. */ |
| for (ix = 0; ix < nb_plugin_files; ix++) |
| { |
| input_file* pluginput = plugin_files [ix]; |
| pluginput->inpisplugin = true; |
| parse_file (get_input_file_name (pluginput)); |
| } |
| if (hit_error) |
| return 1; |
| |
| plugin_output = create_file ("GCC", plugin_output_filename); |
| DBGPRINTF ("created plugin_output %p named %s", |
| (void *) plugin_output, plugin_output->name); |
| } |
| else |
| { /* No plugin files, we are in normal mode. */ |
| if (!srcdir) |
| fatal ("gengtype needs a source directory in normal mode"); |
| } |
| if (hit_error) |
| return 1; |
| |
| gen_rtx_next (); |
| |
| set_gc_used (variables); |
| |
| for (type_p t = structures; t; t = t->next) |
| { |
| bool for_user = false; |
| for (options_p o = t->u.s.opt; o; o = o->next) |
| if (strcmp (o->name, "for_user") == 0) |
| { |
| for_user = true; |
| break; |
| } |
| |
| if (for_user) |
| set_gc_used_type (t, GC_POINTED_TO); |
| } |
| /* The state at this point is read from the state input file or by |
| parsing source files and optionally augmented by parsing plugin |
| source files. Write it now. */ |
| if (write_state_filename) |
| { |
| DBGPRINT_COUNT_TYPE ("structures before write_state", structures); |
| |
| if (hit_error) |
| fatal ("didn't write state file %s after errors", |
| write_state_filename); |
| |
| DBGPRINTF ("before write_state %s", write_state_filename); |
| write_state (write_state_filename); |
| |
| if (do_dump) |
| dump_everything (); |
| |
| /* After having written the state file we return immediately to |
| avoid generating any output file. */ |
| if (hit_error) |
| return 1; |
| else |
| return 0; |
| } |
| |
| |
| open_base_files (); |
| |
| output_header = plugin_output ? plugin_output : header_file; |
| DBGPRINT_COUNT_TYPE ("structures before write_types outputheader", |
| structures); |
| |
| write_types (output_header, structures, &ggc_wtd); |
| if (plugin_files == NULL) |
| { |
| DBGPRINT_COUNT_TYPE ("structures before write_types headerfil", |
| structures); |
| write_types (header_file, structures, &pch_wtd); |
| write_local (header_file, structures); |
| } |
| write_roots (variables, plugin_files == NULL); |
| write_rtx_next (); |
| close_output_files (); |
| |
| if (do_dump) |
| dump_everything (); |
| |
| /* Don't bother about free-ing any input or plugin file, etc. */ |
| |
| if (hit_error) |
| return 1; |
| return 0; |
| } |