| /* Process source files and output type information. |
| Copyright (C) 2002-2019 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; |
| |
| /* 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 (strncmp (s, "gcc::", 5) == 0) |
| 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 (strncmp (rtx_format[i], "uu", 2) == 0) |
| 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) 2004-2019 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", |
| "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", 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); |
| |
| /* 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 && strncmp (srcdir_relative_path, "c-family", 8) == 0) |
| 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 *tname, const char *lastname, |
| 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 |