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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [gengtype.c] - Rev 696
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/* Process source files and output type information. Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 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 GENERATOR_FILE #include "bconfig.h" #else #include "config.h" #endif #include "system.h" #include "errors.h" /* for fatal */ #include "getopt.h" #include "double-int.h" #include "version.h" /* for version_string & pkgversion_string. */ #include "hashtab.h" #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 *); /* 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); } /* asprintf, but produces fatal message on out-of-memory. */ char * xasprintf (const char *format, ...) { int n; char *result; va_list ap; va_start (ap, format); n = vasprintf (&result, format, ap); if (result == NULL || n < 0) fatal ("out of memory"); va_end (ap); return result; } /* 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; #if ENABLE_CHECKING /* Utility debugging function, printing the various type counts within a list of types. Called thru 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, nb_param_struct = 0; type_p p = NULL; for (p = t; p; p = p->next) { nb_types++; switch (p->kind) { case TYPE_SCALAR: nb_scalar++; break; case TYPE_STRING: nb_string++; break; case TYPE_STRUCT: nb_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_PARAM_STRUCT: nb_param_struct++; break; default: 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 || nb_param_struct > 0) fprintf (stderr, "@@%%@@ %d lang_structs, %d param_structs\n", nb_lang_struct, nb_param_struct); fprintf (stderr, "\n"); } #endif /* ENABLE_CHECKING */ /* 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; type_p structures; type_p param_structs; pair_p variables; static type_p find_param_structure (type_p t, type_p param[NUM_PARAM]); 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) { 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); } /* Return the type previously defined for S. Use POS to report errors. */ type_p resolve_typedef (const char *s, struct fileloc *pos) { pair_p p; for (p = typedefs; p != NULL; p = p->next) if (strcmp (p->name, s) == 0) return p->type; error_at_line (pos, "unidentified type `%s'", s); return &scalar_nonchar; /* treat as "int" */ } /* Create and return a new structure with tag NAME (or a union iff ISUNION is nonzero), at POS with fields FIELDS and options O. */ type_p new_structure (const char *name, int isunion, struct fileloc *pos, pair_p fields, options_p o) { type_p si; type_p s = NULL; lang_bitmap bitmap = get_lang_bitmap (pos->file); for (si = structures; si != NULL; si = si->next) 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; s->next = structures; structures = s; } if (s->u.s.line.file != NULL || (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 = isunion ? TYPE_UNION : TYPE_STRUCT; 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; return s; } /* Return the previously-defined structure with tag NAME (or a union iff ISUNION is nonzero), or a new empty structure or union if none was defined previously. */ type_p find_structure (const char *name, int isunion) { type_p s; for (s = structures; s != NULL; s = s->next) if (strcmp (name, s->u.s.tag) == 0 && UNION_P (s) == isunion) return s; type_count++; s = XCNEW (struct type); s->next = structures; s->state_number = -type_count; structures = s; s->kind = isunion ? TYPE_UNION : TYPE_STRUCT; s->u.s.tag = name; structures = s; return s; } /* Return the previously-defined parameterized structure for structure T and parameters PARAM, or a new parameterized empty structure or union if none was defined previously. */ static type_p find_param_structure (type_p t, type_p param[NUM_PARAM]) { type_p res; for (res = param_structs; res; res = res->next) if (res->u.param_struct.stru == t && memcmp (res->u.param_struct.param, param, sizeof (type_p) * NUM_PARAM) == 0) break; if (res == NULL) { type_count++; res = XCNEW (struct type); res->kind = TYPE_PARAM_STRUCT; res->next = param_structs; res->state_number = -type_count; param_structs = res; res->u.param_struct.stru = t; memcpy (res->u.param_struct.param, param, sizeof (type_p) * NUM_PARAM); } return res; } /* 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++), 1, &lexer_line, union_fields, 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], "iuu", 3) == 0) rtx_next_new[i] = 2; 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", 0)); rtvec_tp = create_pointer (find_structure ("rtvec_def", 0)); tree_tp = create_pointer (find_structure ("tree_node", 1)); mem_attrs_tp = create_pointer (find_structure ("mem_attrs", 0)); reg_attrs_tp = create_pointer (find_structure ("reg_attrs", 0)); basic_block_tp = create_pointer (find_structure ("basic_block_def", 0)); constant_tp = create_pointer (find_structure ("constant_descriptor_rtx", 0)); 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: case NOTE_INSN_CALL_ARG_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", 1, &lexer_line, note_flds, 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", 1, &lexer_line, sym_flds, 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': t = scalar_tp; subname = "rt_int"; break; case '0': if (i == MEM && aindex == 1) t = mem_attrs_tp, subname = "rt_mem"; else if (i == JUMP_INSN && aindex == 8) t = rtx_tp, subname = "rt_rtx"; else if (i == CODE_LABEL && aindex == 5) t = scalar_tp, subname = "rt_int"; else if (i == CODE_LABEL && aindex == 4) 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 == 4) t = note_union_tp, subname = ""; else if (i == NOTE && aindex == 5) t = scalar_tp, subname = "rt_int"; else if (i == NOTE && aindex >= 7) 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 == REG && aindex == 1) t = scalar_tp, subname = "rt_int"; else if (i == REG && aindex == 2) t = reg_attrs_tp, subname = "rt_reg"; else if (i == SCRATCH && aindex == 0) t = scalar_tp, subname = "rt_int"; else if (i == SYMBOL_REF && aindex == 1) t = scalar_tp, subname = "rt_int"; else if (i == SYMBOL_REF && aindex == 2) t = symbol_union_tp, subname = ""; else if (i == BARRIER && aindex >= 3) 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 == SYMBOL_REF) { /* Add the "block_sym" field if SYMBOL_REF_HAS_BLOCK_INFO_P holds. */ type_p field_tp = find_structure ("block_symbol", 0); 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, 0, &lexer_line, subfields, 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", 1, &lexer_line, flds, nodot); } /* 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", 1, &lexer_line, flds, nodot); } /* 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; type_p params[NUM_PARAM]; int params_p = 0; int i; for (i = 0; i < NUM_PARAM; i++) params[i] = NULL; for (; opt; opt = opt->next) if (strcmp (opt->name, "length") == 0) length_p = 1; else if ((strcmp (opt->name, "param_is") == 0 || (strncmp (opt->name, "param", 5) == 0 && ISDIGIT (opt->name[5]) && strcmp (opt->name + 6, "_is") == 0)) && opt->kind == OPTION_TYPE) { int num = ISDIGIT (opt->name[5]) ? opt->name[5] - '0' : 0; if (!UNION_OR_STRUCT_P (t) && (t->kind != TYPE_POINTER || !UNION_OR_STRUCT_P (t->u.p))) { error_at_line (&lexer_line, "option `%s' may only be applied to structures or structure pointers", opt->name); return t; } params_p = 1; if (params[num] != NULL) error_at_line (&lexer_line, "duplicate `%s' option", opt->name); if (!ISDIGIT (opt->name[5])) params[num] = create_pointer (opt->info.type); else params[num] = opt->info.type; } 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 (params_p) { type_p realt; if (pointer_p) t = t->u.p; realt = find_param_structure (t, params); t = pointer_p ? create_pointer (realt) : realt; } 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, type_p *); 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 *pass_param, 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, NULL); else if (strcmp (o->name, "maybe_undef") == 0) *maybe_undef = 1; else if (strcmp (o->name, "use_params") == 0) *pass_param = 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. */ static void set_gc_used_type (type_p t, enum gc_used_enum level, type_p param[NUM_PARAM]) { if (t->gc_used >= level) return; t->gc_used = level; switch (t->kind) { case TYPE_STRUCT: case TYPE_UNION: { pair_p f; int dummy; type_p dummy2; process_gc_options (t->u.s.opt, level, &dummy, &dummy, &dummy, &dummy, &dummy2); for (f = t->u.s.fields; f; f = f->next) { int maybe_undef = 0; int pass_param = 0; int length = 0; int skip = 0; type_p nested_ptr = NULL; process_gc_options (f->opt, level, &maybe_undef, &pass_param, &length, &skip, &nested_ptr); if (nested_ptr && f->type->kind == TYPE_POINTER) set_gc_used_type (nested_ptr, GC_POINTED_TO, pass_param ? param : NULL); else if (length && f->type->kind == TYPE_POINTER) set_gc_used_type (f->type->u.p, GC_USED, NULL); else if (maybe_undef && f->type->kind == TYPE_POINTER) set_gc_used_type (f->type->u.p, GC_MAYBE_POINTED_TO, NULL); else if (pass_param && f->type->kind == TYPE_POINTER && param) set_gc_used_type (find_param_structure (f->type->u.p, param), GC_POINTED_TO, NULL); else if (skip) ; /* target type is not used through this field */ else set_gc_used_type (f->type, GC_USED, pass_param ? param : NULL); } break; } case TYPE_POINTER: set_gc_used_type (t->u.p, GC_POINTED_TO, NULL); break; case TYPE_ARRAY: set_gc_used_type (t->u.a.p, GC_USED, param); break; case TYPE_LANG_STRUCT: for (t = t->u.s.lang_struct; t; t = t->next) set_gc_used_type (t, level, param); break; case TYPE_PARAM_STRUCT: { int i; for (i = 0; i < NUM_PARAM; i++) if (t->u.param_struct.param[i] != 0) set_gc_used_type (t->u.param_struct.param[i], GC_USED, NULL); } if (t->u.param_struct.stru->gc_used == GC_POINTED_TO) level = GC_POINTED_TO; else level = GC_USED; t->u.param_struct.stru->gc_used = GC_UNUSED; set_gc_used_type (t->u.param_struct.stru, level, t->u.param_struct.param); 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, NULL); 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, 2007, 2009 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", "tm.h", "hashtab.h", "splay-tree.h", "obstack.h", "bitmap.h", "input.h", "tree.h", "rtl.h", "function.h", "insn-config.h", "expr.h", "hard-reg-set.h", "basic-block.h", "cselib.h", "insn-addr.h", "optabs.h", "libfuncs.h", "debug.h", "ggc.h", "cgraph.h", "tree-flow.h", "reload.h", "cpp-id-data.h", "tree-chrec.h", "cfglayout.h", "except.h", "output.h", "gimple.h", "cfgloop.h", "target.h", "ipa-prop.h", "lto-streamer.h", "target-globals.h", "ipa-inline.h", "dwarf2out.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"); } } /* 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/$3.h", NULL_FRULACT}, /* Both c-lang.h & c-tree.h gives gt-c-decl.h for c-decl.c ! */ { DIR_PREFIX_REGEX "c-lang\\.h$", REG_EXTENDED, NULL_REGEX, "gt-c-decl.h", "c-decl.c", NULL_FRULACT}, { DIR_PREFIX_REGEX "c-tree\\.h$", REG_EXTENDED, NULL_REGEX, "gt-c-decl.h", "c-decl.c", NULL_FRULACT}, /* cp/cp-tree.h gives gt-cp-tree.h for cp/tree.c ! */ { DIR_PREFIX_REGEX "cp/cp-tree\\.h$", 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$", REG_EXTENDED, NULL_REGEX, "gt-objc-objc-map.h", "objc/objc-map.c", NULL_FRULACT }, /* General cases. For header *.h and source *.c files, we need * special actions to handle the language. */ /* Source *.c files are using get_file_gtfilename to compute their output_name and get_file_basename to compute their for_name thru the source_dot_c_frul action. */ { DIR_PREFIX_REGEX "([[:alnum:]_-]*)\\.c$", REG_EXTENDED, NULL_REGEX, "gt-$3.h", "$3.c", source_dot_c_frul}, /* Common header files get "gtype-desc.c" as their output_name, * while language specific header files are handled specially. So * we need the header_dot_h_frul action. */ { DIR_PREFIX_REGEX "([[:alnum:]_-]*)\\.h$", 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 thru 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 is impossible, and could only happen if the files_rules is incomplete or buggy. */ gcc_unreachable (); } /* 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; } } 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; int skip_hooks; /* skip hook generation if non zero */ }; 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, type_p *param, 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, type_p param_structs, 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, type_p *param); static void write_local (outf_p output_header, type_p structures, type_p param_structs); static void write_enum_defn (type_p structures, type_p param_structs); 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 *, const char *, 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; type_p *param; int used_length; type_p orig_s; const char *reorder_fn; bool needs_cast_p; bool fn_wants_lvalue; }; /* 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: 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: oprintf (of, "%lu%s", (unsigned long) strlen (t->u.s.tag), t->u.s.tag); break; case TYPE_PARAM_STRUCT: { int i; for (i = 0; i < NUM_PARAM; i++) if (t->u.param_struct.param[i] != NULL) output_mangled_typename (of, t->u.param_struct.param[i]); output_mangled_typename (of, t->u.param_struct.stru); } 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); } } /* 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, and D->PARAM is the current parameter (from an enclosing param_is option). */ static void walk_type (type_p t, struct walk_type_data *d) { const char *length = NULL; const char *desc = NULL; int maybe_undef_p = 0; int use_param_num = -1; int use_params_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 (strncmp (oo->name, "use_param", 9) == 0 && (oo->name[9] == '\0' || ISDIGIT (oo->name[9]))) use_param_num = oo->name[9] == '\0' ? 0 : oo->name[9] - '0'; else if (strcmp (oo->name, "use_params") == 0) use_params_p = 1; else if (strcmp (oo->name, "desc") == 0 && oo->kind == OPTION_STRING) desc = oo->info.string; else if (strcmp (oo->name, "mark_hook") == 0) ; 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) ; 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, "param_is") == 0) ; else if (strncmp (oo->name, "param", 5) == 0 && ISDIGIT (oo->name[5]) && strcmp (oo->name + 6, "_is") == 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 error_at_line (d->line, "unknown option `%s'\n", oo->name); if (d->used_length) length = NULL; if (use_params_p) { int pointer_p = t->kind == TYPE_POINTER; if (pointer_p) t = t->u.p; if (!UNION_OR_STRUCT_P (t)) error_at_line (d->line, "`use_params' option on unimplemented type"); else t = find_param_structure (t, d->param); if (pointer_p) t = create_pointer (t); } if (use_param_num != -1) { if (d->param != NULL && d->param[use_param_num] != NULL) { type_p nt = d->param[use_param_num]; if (t->kind == TYPE_ARRAY) nt = create_array (nt, t->u.a.len); else if (length != NULL && t->kind == TYPE_POINTER) nt = create_pointer (nt); d->needs_cast_p = (t->kind != TYPE_POINTER && (nt->kind == TYPE_POINTER || nt->kind == TYPE_STRING)); t = nt; } else error_at_line (d->line, "no parameter defined for `%s'", d->val); } 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)) { 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: { 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) && t->u.p->kind != TYPE_PARAM_STRUCT) { 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->counter++; 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); output_escaped_param (d, length, "length"); 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, ""); } } break; case TYPE_ARRAY: { int loopcounter = d->counter++; 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; /* 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); 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; 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 (", d->indent, ""); output_escaped_param (d, desc, "desc"); oprintf (d->of, ")\n"); d->indent += 2; oprintf (d->of, "%*s{\n", d->indent, ""); } for (f = t->u.s.fields; f; f = f->next) { options_p oo; const char *dot = "."; const char *tagid = NULL; int skip_p = 0; int default_p = 0; int use_param_p = 0; 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 (strncmp (oo->name, "use_param", 9) == 0 && (oo->name[9] == '\0' || ISDIGIT (oo->name[9]))) use_param_p = 1; 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); d->line = &f->line; d->val = newval = xasprintf ("%s%s%s", oldval, dot, f->name); d->opt = f->opt; d->used_length = false; if (union_p && use_param_p && d->param == NULL) oprintf (d->of, "%*sgcc_unreachable ();\n", d->indent, ""); else walk_type (f->type, d); 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 (union_p) { oprintf (d->of, "%*s}\n", d->indent, ""); d->indent -= 2; } } 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_PARAM_STRUCT: { type_p *oldparam = d->param; d->param = t->u.param_struct.param; walk_type (t->u.param_struct.stru, d); d->param = oldparam; } break; default: 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: 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) { 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]); if (f->u.p->kind == TYPE_PARAM_STRUCT && f->u.p->u.s.line.file != NULL) { oprintf (d->of, ", gt_e_"); output_mangled_typename (d->of, f); } else if (UNION_OR_STRUCT_P (f) && f->u.p->u.s.line.file != NULL) { oprintf (d->of, ", gt_ggc_e_"); output_mangled_typename (d->of, f); } else oprintf (d->of, ", gt_types_enum_last"); } 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_PARAM_STRUCT: 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 (); } } /* A subroutine of write_func_for_structure. Write the enum tag for S. */ static void output_type_enum (outf_p of, type_p s) { if (s->kind == TYPE_PARAM_STRUCT && s->u.param_struct.line.file != NULL) { oprintf (of, ", gt_e_"); output_mangled_typename (of, s); } else if (UNION_OR_STRUCT_P (s) && s->u.s.line.file != NULL) { oprintf (of, ", gt_ggc_e_"); output_mangled_typename (of, s); } else oprintf (of, ", gt_types_enum_last"); } /* 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, type_p *param) { const input_file *fn; int i; gcc_assert (UNION_OR_STRUCT_P (s)); fn = s->u.s.line.file; /* This is a hack, and not the good kind either. */ for (i = NUM_PARAM - 1; i >= 0; i--) if (param && param[i] && param[i]->kind == TYPE_POINTER && UNION_OR_STRUCT_P (param[i]->u.p)) fn = param[i]->u.p->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)); } /* For S, a structure that's part of ORIG_S, and using parameters PARAM, 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, type_p *param, const struct write_types_data *wtd) { const char *chain_next = NULL; const char *chain_prev = NULL; const char *chain_circular = NULL; const char *mark_hook_name = NULL; options_p opt; struct walk_type_data d; memset (&d, 0, sizeof (d)); d.of = get_output_file_for_structure (s, param); 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, "mark_hook") == 0 && opt->kind == OPTION_STRING) mark_hook_name = opt->info.string; 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.param = param; d.prev_val[0] = "*x"; d.prev_val[1] = "not valid postage"; /* Guarantee an error. */ d.prev_val[3] = "x"; d.val = "(*x)"; oprintf (d.of, "\n"); oprintf (d.of, "void\n"); if (param == NULL) oprintf (d.of, "gt_%sx_%s", wtd->prefix, orig_s->u.s.tag); else { oprintf (d.of, "gt_%s_", wtd->prefix); output_mangled_typename (d.of, orig_s); } oprintf (d.of, " (void *x_p)\n"); oprintf (d.of, "{\n"); oprintf (d.of, " %s %s * %sx = (%s %s *)x_p;\n", s->kind == TYPE_UNION ? "union" : "struct", s->u.s.tag, chain_next == NULL ? "const " : "", s->kind == TYPE_UNION ? "union" : "struct", s->u.s.tag); if (chain_next != NULL) oprintf (d.of, " %s %s * xlimit = x;\n", s->kind == TYPE_UNION ? "union" : "struct", s->u.s.tag); 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); output_type_enum (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); output_type_enum (d.of, orig_s); } oprintf (d.of, "))\n"); if (chain_circular != NULL) oprintf (d.of, " return;\n do\n"); if (mark_hook_name && !wtd->skip_hooks) { oprintf (d.of, " {\n"); oprintf (d.of, " %s (xlimit);\n ", mark_hook_name); } oprintf (d.of, " xlimit = ("); d.prev_val[2] = "*xlimit"; output_escaped_param (&d, chain_next, "chain_next"); oprintf (d.of, ");\n"); if (mark_hook_name && !wtd->skip_hooks) 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); output_type_enum (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); output_type_enum (d.of, orig_s); } oprintf (d.of, "));\n"); if (mark_hook_name && !wtd->skip_hooks) oprintf (d.of, " %s (xlimit);\n", mark_hook_name); oprintf (d.of, " do\n"); } else oprintf (d.of, " while (x != xlimit)\n"); } oprintf (d.of, " {\n"); if (mark_hook_name && chain_next == NULL && !wtd->skip_hooks) { oprintf (d.of, " %s (x);\n", mark_hook_name); } d.prev_val[2] = "*x"; d.indent = 6; walk_type (s, &d); 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"); } /* Write out marker routines for STRUCTURES and PARAM_STRUCTS. */ static void write_types (outf_p output_header, type_p structures, type_p param_structs, 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) 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; 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->u.s.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) oprintf (output_header, "#define gt_%sx_%s gt_%sx_%s\n", wtd->prefix, s->u.s.tag, wtd->prefix, t->u.s.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->u.s.tag); if (s->u.s.line.file == NULL) { fprintf (stderr, "warning: structure `%s' used but not defined\n", s->u.s.tag); continue; } } for (s = param_structs; s; s = s->next) if (s->gc_used == GC_POINTED_TO) { type_p stru = s->u.param_struct.stru; /* Declare the marker procedure. */ oprintf (output_header, "extern void gt_%s_", wtd->prefix); output_mangled_typename (output_header, s); oprintf (output_header, " (void *);\n"); if (stru->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, NULL, wtd); } } else { nbfun++; DBGPRINTF ("writing func #%d struct s @ %p '%s'", nbfun, (void*) s, s->u.s.tag); write_func_for_structure (s, s, NULL, 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); } for (s = param_structs; s; s = s->next) if (s->gc_used == GC_POINTED_TO) { type_p *param = s->u.param_struct.param; type_p stru = s->u.param_struct.stru; if (stru->u.s.line.file == NULL) continue; if (stru->kind == TYPE_LANG_STRUCT) { type_p ss; for (ss = stru->u.s.lang_struct; ss; ss = ss->next) { nbfun++; DBGPRINTF ("writing func #%d param lang_struct ss @ %p '%s'", nbfun, (void*) ss, ss->u.s.tag); write_func_for_structure (s, ss, param, wtd); } } else { nbfun++; DBGPRINTF ("writing func #%d param struct s @ %p stru @ %p '%s'", nbfun, (void*) s, (void*) stru, stru->u.s.tag); write_func_for_structure (s, stru, param, wtd); } } else { /* Param structure s is not pointed to, so should be ignored. */ DBGPRINTF ("ignored s @ %p", (void*)s); } 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. ", FALSE }; 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. ", TRUE }; /* Write out the local pointer-walking routines. */ /* process_field routine for local pointer-walking. */ static void write_types_local_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_PARAM_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_SCALAR: break; default: 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, type_p *param) { struct walk_type_data d; memset (&d, 0, sizeof (d)); d.of = get_output_file_for_structure (s, param); 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.param = param; 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 * const 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; walk_type (s, &d); oprintf (d.of, "}\n"); } /* Write out local marker routines for STRUCTURES and PARAM_STRUCTS. */ static void write_local (outf_p output_header, type_p structures, type_p param_structs) { 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, NULL); } else write_local_func_for_structure (s, s, NULL); } for (s = param_structs; s; s = s->next) if (s->gc_used == GC_POINTED_TO) { type_p *param = s->u.param_struct.param; type_p stru = s->u.param_struct.stru; /* Declare the marker procedure. */ 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 (stru->u.s.line.file == NULL) { fprintf (stderr, "warning: structure `%s' used but not defined\n", s->u.s.tag); continue; } if (stru->kind == TYPE_LANG_STRUCT) { type_p ss; for (ss = stru->u.s.lang_struct; ss; ss = ss->next) write_local_func_for_structure (s, ss, param); } else write_local_func_for_structure (s, stru, param); } } /* 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 \ && strncmp (s->u.s.tag, "anonymous", strlen ("anonymous")))))) /* Write out the 'enum' definition for gt_types_enum. */ static void write_enum_defn (type_p structures, type_p param_structs) { type_p s; int nbstruct = 0; int nbparamstruct = 0; if (!header_file) return; oprintf (header_file, "\n/* Enumeration of types known. */\n"); oprintf (header_file, "enum gt_types_enum {\n"); for (s = structures; s; s = s->next) if (USED_BY_TYPED_GC_P (s)) { nbstruct++; DBGPRINTF ("write_enum_defn s @ %p nbstruct %d", (void*) s, nbstruct); if (UNION_OR_STRUCT_P (s)) DBGPRINTF ("write_enum_defn s %p #%d is unionorstruct tagged %s", (void*) s, nbstruct, s->u.s.tag); oprintf (header_file, " gt_ggc_e_"); output_mangled_typename (header_file, s); oprintf (header_file, ",\n"); } for (s = param_structs; s; s = s->next) if (s->gc_used == GC_POINTED_TO) { nbparamstruct++; DBGPRINTF ("write_enum_defn s %p nbparamstruct %d", (void*) s, nbparamstruct); oprintf (header_file, " gt_e_"); output_mangled_typename (header_file, s); oprintf (header_file, ",\n"); } oprintf (header_file, " gt_types_enum_last\n"); oprintf (header_file, "};\n"); if (verbosity_level >= 2) printf ("%s handled %d GTY-ed structures & %d parameterized structures.\n", progname, nbstruct, nbparamstruct); } /* 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); 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"); } } } /* 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, const char *if_marked, 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, if_marked, 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. IF_MARKED is nonzero iff we are building the root table for hash table caches. */ static void write_root (outf_p f, pair_p v, type_p type, const char *name, int has_length, struct fileloc *line, const char *if_marked, 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 if (strcmp (o->name, "param_is") == 0) ; 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, if_marked, 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, if_marked, 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, if_marked, emit_pch); free (newname); } break; case TYPE_POINTER: { type_p tp; if (!start_root_entry (f, v, name, line)) return; tp = type->u.p; if (!has_length && UNION_OR_STRUCT_P (tp)) { oprintf (f, " >_ggc_mx_%s,\n", tp->u.s.tag); if (emit_pch) oprintf (f, " >_pch_nx_%s", tp->u.s.tag); else oprintf (f, " NULL"); } else if (!has_length && tp->kind == TYPE_PARAM_STRUCT) { oprintf (f, " >_ggc_m_"); output_mangled_typename (f, tp); if (emit_pch) { oprintf (f, ",\n >_pch_n_"); output_mangled_typename (f, tp); } else oprintf (f, ",\n NULL"); } 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); } if (if_marked) oprintf (f, ",\n &%s", if_marked); 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; default: 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.param = NULL; 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; 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; 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, "param_is") == 0) ; else if (strncmp (o->name, "param", 5) == 0 && ISDIGIT (o->name[5]) && strcmp (o->name + 6, "_is") == 0) ; else if (strcmp (o->name, "if_marked") == 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 || strcmp (o->name, "if_marked") == 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, NULL, 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; else if (strcmp (o->name, "if_marked") == 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_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; const char *if_marked = NULL; 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, "if_marked") == 0 && o->kind == OPTION_STRING) if_marked = o->info.string; if (if_marked == NULL) continue; if (v->type->kind != TYPE_POINTER || v->type->u.p->kind != TYPE_PARAM_STRUCT || v->type->u.p->u.param_struct.stru != find_structure ("htab", 0)) { error_at_line (&v->line, "if_marked option used but not hash table"); 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_cache_tab gt_ggc_rc_"); put_mangled_filename (f, v->line.file); oprintf (f, "[] = {\n"); } write_root (f, v, v->type->u.p->u.param_struct.param[0], v->name, length_p, &v->line, if_marked, emit_pch); } finish_root_table (flp, "ggc_rc", "LAST_GGC_CACHE_TAB", "ggc_cache_tab", "gt_ggc_cache_rtab"); 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 length_p = 0; int if_marked_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, "if_marked") == 0) if_marked_p = 1; if (!if_marked_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_pch_rc_"); put_mangled_filename (f, v->line.file); oprintf (f, "[] = {\n"); } write_root (f, v, v->type, v->name, length_p, &v->line, NULL, emit_pch); } finish_root_table (flp, "pch_rc", "LAST_GGC_ROOT_TAB", "ggc_root_tab", "gt_pch_cache_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 = 0; options_p o; for (o = v->opt; o; o = o->next) if (strcmp (o->name, "deletable") == 0 || strcmp (o->name, "if_marked") == 0) skip_p = 1; 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"); } /* Record the definition of the vec_prefix structure, as defined in vec.h: struct vec_prefix GTY(()) { unsigned num; unsigned alloc; }; */ static type_p vec_prefix_type (void) { static type_p prefix_type = NULL; if (prefix_type == NULL) { pair_p fields; static struct fileloc pos = { NULL, 0 }; type_p len_ty = create_scalar_type ("unsigned"); pos.file = input_file_by_name (__FILE__); pos.line = __LINE__; fields = create_field_at (0, len_ty, "alloc", 0, &pos); fields = create_field_at (fields, len_ty, "num", 0, &pos); prefix_type = new_structure ("vec_prefix", 0, &pos, fields, 0); prefix_type->u.s.bitmap = -1; } return prefix_type; } /* Record the definition of a generic VEC structure, as if we had expanded the macros in vec.h: typedef struct VEC_<type>_base GTY(()) { struct vec_prefix prefix; <type> GTY((length ("%h.prefix.num"))) vec[1]; } VEC_<type>_base where the GTY(()) tags are only present if is_scalar is _false_. */ void note_def_vec (const char *type_name, bool is_scalar, struct fileloc *pos) { pair_p fields; type_p t; options_p o; const char *name = concat ("VEC_", type_name, "_base", (char *) 0); if (is_scalar) { t = create_scalar_type (type_name); o = 0; } else { t = resolve_typedef (type_name, pos); o = create_string_option (0, "length", "%h.prefix.num"); } /* We assemble the field list in reverse order. */ fields = create_field_at (0, create_array (t, "1"), "vec", o, pos); fields = create_field_at (fields, vec_prefix_type (), "prefix", 0, pos); do_typedef (name, new_structure (name, 0, pos, fields, 0), pos); } /* Record the definition of an allocation-specific VEC structure, as if we had expanded the macros in vec.h: typedef struct VEC_<type>_<astrat> { VEC_<type>_base base; } VEC_<type>_<astrat>; */ void note_def_vec_alloc (const char *type, const char *astrat, struct fileloc *pos) { const char *astratname = concat ("VEC_", type, "_", astrat, (char *) 0); const char *basename = concat ("VEC_", type, "_base", (char *) 0); pair_p field = create_field_at (0, resolve_typedef (basename, pos), "base", 0, pos); do_typedef (astratname, new_structure (astratname, 0, pos, field, 0), pos); } /* 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 || s->kind == TYPE_LANG_STRUCT) return "struct "; if (s->kind == TYPE_UNION) return "union "; return ""; } /* TRUE if type S has the GTY variable_size annotation. */ static bool variable_size_p (const type_p s) { options_p o; for (o = s->u.s.opt; o; o = o->next) if (strcmp (o->name, "variable_size") == 0) return true; return false; } enum alloc_quantity { single, vector }; enum alloc_zone { any_zone, specific_zone }; /* Writes one typed allocator definition into output F for type identifier TYPE_NAME with optional type specifier TYPE_SPECIFIER. The allocator name will contain ALLOCATOR_TYPE. If VARIABLE_SIZE is true, the allocator will have an extra parameter specifying number of bytes to allocate. If QUANTITY is set to VECTOR, a vector allocator will be output, if ZONE is set to SPECIFIC_ZONE, the allocator will be zone-specific. */ static void write_typed_alloc_def (outf_p f, bool variable_size, const char *type_specifier, const char *type_name, const char *allocator_type, enum alloc_quantity quantity, enum alloc_zone zone) { bool two_args = variable_size && (quantity == vector); bool third_arg = ((zone == specific_zone) && (variable_size || (quantity == vector))); gcc_assert (f != NULL); oprintf (f, "#define ggc_alloc_%s%s", allocator_type, type_name); oprintf (f, "(%s%s%s%s%s) ", (variable_size ? "SIZE" : ""), (two_args ? ", " : ""), (quantity == vector) ? "n" : "", (third_arg ? ", " : ""), (zone == specific_zone) ? "z" : ""); oprintf (f, "((%s%s *)", type_specifier, type_name); oprintf (f, "(ggc_internal_%salloc_stat (", allocator_type); if (zone == specific_zone) oprintf (f, "z, "); if (variable_size) oprintf (f, "SIZE"); else oprintf (f, "sizeof (%s%s)", type_specifier, type_name); if (quantity == vector) oprintf (f, ", n"); oprintf (f, " MEM_STAT_INFO)))\n"); } /* Writes a typed allocator definition into output F for a struct or union S, with a given ALLOCATOR_TYPE and QUANTITY for ZONE. */ static void write_typed_struct_alloc_def (outf_p f, const type_p s, const char *allocator_type, enum alloc_quantity quantity, enum alloc_zone zone) { gcc_assert (UNION_OR_STRUCT_P (s)); write_typed_alloc_def (f, variable_size_p (s), get_type_specifier (s), s->u.s.tag, allocator_type, quantity, zone); } /* Writes a typed allocator definition into output F for a typedef P, with a given ALLOCATOR_TYPE and QUANTITY for ZONE. */ static void write_typed_typedef_alloc_def (outf_p f, const pair_p p, const char *allocator_type, enum alloc_quantity quantity, enum alloc_zone zone) { write_typed_alloc_def (f, variable_size_p (p->type), "", p->name, allocator_type, quantity, zone); } /* Writes typed allocator definitions into output F for the types in STRUCTURES and TYPEDEFS that are used by GC. */ static void write_typed_alloc_defns (outf_p f, const type_p structures, const pair_p typedefs) { type_p s; pair_p p; gcc_assert (f != NULL); oprintf (f, "\n/* Allocators for known structs and unions. */\n\n"); for (s = structures; s; s = s->next) { if (!USED_BY_TYPED_GC_P (s)) continue; gcc_assert (UNION_OR_STRUCT_P (s)); /* In plugin mode onput output ggc_alloc macro definitions relevant to plugin input files. */ if (nb_plugin_files > 0 && ((s->u.s.line.file == NULL) || !s->u.s.line.file->inpisplugin)) continue; write_typed_struct_alloc_def (f, s, "", single, any_zone); write_typed_struct_alloc_def (f, s, "cleared_", single, any_zone); write_typed_struct_alloc_def (f, s, "vec_", vector, any_zone); write_typed_struct_alloc_def (f, s, "cleared_vec_", vector, any_zone); write_typed_struct_alloc_def (f, s, "zone_", single, specific_zone); write_typed_struct_alloc_def (f, s, "zone_cleared_", single, specific_zone); write_typed_struct_alloc_def (f, s, "zone_vec_", vector, specific_zone); write_typed_struct_alloc_def (f, s, "zone_cleared_vec_", vector, specific_zone); } oprintf (f, "\n/* Allocators for known typedefs. */\n"); for (p = typedefs; p; p = p->next) { s = p->type; if (!USED_BY_TYPED_GC_P (s) || (strcmp (p->name, s->u.s.tag) == 0)) continue; /* In plugin mode onput output ggc_alloc macro definitions relevant to plugin input files. */ if (nb_plugin_files > 0) { struct fileloc* filoc = type_fileloc(s); if (!filoc || !filoc->file->inpisplugin) continue; }; write_typed_typedef_alloc_def (f, p, "", single, any_zone); write_typed_typedef_alloc_def (f, p, "cleared_", single, any_zone); write_typed_typedef_alloc_def (f, p, "vec_", vector, any_zone); write_typed_typedef_alloc_def (f, p, "cleared_vec_", vector, any_zone); write_typed_typedef_alloc_def (f, p, "zone_", single, specific_zone); write_typed_typedef_alloc_def (f, p, "zone_cleared_", single, specific_zone); write_typed_typedef_alloc_def (f, p, "zone_cleared_vec_", vector, specific_zone); } } /* 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. */ static void output_typename (outf_p of, const_type_p t) { switch (t->kind) { case TYPE_STRING: oprintf (of, "str"); break; case TYPE_SCALAR: oprintf (of, "scalar"); break; case TYPE_POINTER: output_typename (of, t->u.p); break; case TYPE_STRUCT: case TYPE_UNION: case TYPE_LANG_STRUCT: oprintf (of, "%s", t->u.s.tag); break; case TYPE_PARAM_STRUCT: { int i; for (i = 0; i < NUM_PARAM; i++) if (t->u.param_struct.param[i] != NULL) { output_typename (of, t->u.param_struct.param[i]); oprintf (of, "_"); } output_typename (of, t->u.param_struct.stru); break; } default: gcc_unreachable (); } } /* Writes a typed GC allocator for type S that is suitable as a callback for the splay tree implementation in libiberty. */ static void write_splay_tree_allocator_def (const_type_p s) { outf_p of = get_output_file_with_visibility (NULL); oprintf (of, "void * ggc_alloc_splay_tree_"); output_typename (of, s); oprintf (of, " (int sz, void * nl)\n"); oprintf (of, "{\n"); oprintf (of, " return ggc_splay_alloc ("); oprintf (of, "gt_e_"); output_mangled_typename (of, s); oprintf (of, ", sz, nl);\n"); oprintf (of, "}\n\n"); } /* Writes typed GC allocators for PARAM_STRUCTS that are suitable as callbacks for the splay tree implementation in libiberty. */ static void write_splay_tree_allocators (const_type_p param_structs) { const_type_p s; oprintf (header_file, "\n/* Splay tree callback allocators. */\n"); for (s = param_structs; s; s = s->next) if (s->gc_used == GC_POINTED_TO) { oprintf (header_file, "extern void * ggc_alloc_splay_tree_"); output_typename (header_file, s); oprintf (header_file, " (int, void *);\n"); write_splay_tree_allocator_def (s); } } 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); #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_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; case TYPE_PARAM_STRUCT: printf ("TYPE_PARAM_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 (t->kind == TYPE_STRUCT || t->kind == TYPE_UNION || t->kind == TYPE_LANG_STRUCT); 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 parameterized struct T. */ static void dump_type_u_param_struct (int indent, type_p t) { int i; gcc_assert (t->kind == TYPE_PARAM_STRUCT); printf ("%*cu.param_struct.stru:\n", indent, ' '); dump_type_list (indent, t->u.param_struct.stru); dump_fileloc (indent, t->u.param_struct.line); for (i = 0; i < NUM_PARAM; i++) { if (t->u.param_struct.param[i] == NULL) continue; printf ("%*cu.param_struct.param[%d]:\n", indent, ' ', i); dump_type (indent + INDENT, t->u.param_struct.param[i]); } } /* 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); 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: 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; case TYPE_PARAM_STRUCT: dump_type_u_param_struct (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) { seen_types = htab_create (100, htab_hash_pointer, htab_eq_pointer, NULL); dump_pair_list ("typedefs", typedefs); dump_structures ("structures", structures); dump_structures ("param_structs", param_structs); dump_pair_list ("variables", variables); 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 ENABLE_CHECKING if (do_debug) { time_t now = (time_t) 0; time (&now); DBGPRINTF ("gengtype started pid %d at %s", (int) getpid (), ctime (&now)); } #endif /* ENABLE_CHECKING */ /* 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); DBGPRINT_COUNT_TYPE ("param_structs after read_state", param_structs); } 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 ("uint64_t", &pos)); POS_HERE (do_scalar_typedef ("uint8", &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_typedef ("PTR", create_pointer (resolve_typedef ("void", &pos)), &pos)); #undef POS_HERE read_input_list (inputlist); for (i = 0; i < num_gt_files; i++) { parse_file (get_input_file_name (gt_files[i])); DBGPRINTF ("parsed file #%d %s", (int) i, get_input_file_name (gt_files[i])); } 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); DBGPRINT_COUNT_TYPE ("param_structs after parsing", param_structs); } 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 (); /* The call to set_gc_used may indirectly call find_param_structure hence enlarge the param_structs list of types. */ set_gc_used (variables); /* 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); DBGPRINT_COUNT_TYPE ("param_structs before write_state", param_structs); 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 (); write_enum_defn (structures, param_structs); output_header = plugin_output ? plugin_output : header_file; write_typed_alloc_defns (output_header, structures, typedefs); DBGPRINT_COUNT_TYPE ("structures before write_types outputheader", structures); DBGPRINT_COUNT_TYPE ("param_structs before write_types outputheader", param_structs); write_types (output_header, structures, param_structs, &ggc_wtd); if (plugin_files == NULL) { DBGPRINT_COUNT_TYPE ("structures before write_types headerfil", structures); DBGPRINT_COUNT_TYPE ("param_structs before write_types headerfil", param_structs); write_types (header_file, structures, param_structs, &pch_wtd); write_local (header_file, structures, param_structs); } write_splay_tree_allocators (param_structs); 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; }
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