From 071ea11e85eb9d529cc5eb3d35f6247466a21b99 Mon Sep 17 00:00:00 2001 From: Stan Shebs Date: Fri, 16 Apr 1999 01:34:07 +0000 Subject: Initial creation of sourceware repository --- gdb/language.c | 1451 -------------------------------------------------------- 1 file changed, 1451 deletions(-) delete mode 100644 gdb/language.c (limited to 'gdb/language.c') diff --git a/gdb/language.c b/gdb/language.c deleted file mode 100644 index 225d423..0000000 --- a/gdb/language.c +++ /dev/null @@ -1,1451 +0,0 @@ -/* Multiple source language support for GDB. - Copyright 1991, 1992 Free Software Foundation, Inc. - Contributed by the Department of Computer Science at the State University - of New York at Buffalo. - -This file is part of GDB. - -This program 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 2 of the License, or -(at your option) any later version. - -This program 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 this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -/* This file contains functions that return things that are specific - to languages. Each function should examine current_language if necessary, - and return the appropriate result. */ - -/* FIXME: Most of these would be better organized as macros which - return data out of a "language-specific" struct pointer that is set - whenever the working language changes. That would be a lot faster. */ - -#include "defs.h" -#include -#include "gdb_string.h" - -#include "symtab.h" -#include "gdbtypes.h" -#include "value.h" -#include "gdbcmd.h" -#include "frame.h" -#include "expression.h" -#include "language.h" -#include "target.h" -#include "parser-defs.h" - -static void -show_language_command PARAMS ((char *, int)); - -static void -set_language_command PARAMS ((char *, int)); - -static void -show_type_command PARAMS ((char *, int)); - -static void -set_type_command PARAMS ((char *, int)); - -static void -show_range_command PARAMS ((char *, int)); - -static void -set_range_command PARAMS ((char *, int)); - -static void -set_range_str PARAMS ((void)); - -static void -set_type_str PARAMS ((void)); - -static void -set_lang_str PARAMS ((void)); - -static void -unk_lang_error PARAMS ((char *)); - -static int -unk_lang_parser PARAMS ((void)); - -static void -show_check PARAMS ((char *, int)); - -static void -set_check PARAMS ((char *, int)); - -static void -set_type_range PARAMS ((void)); - -static void -unk_lang_emit_char PARAMS ((int c, GDB_FILE *stream, int quoter)); - -static void -unk_lang_printchar PARAMS ((int c, GDB_FILE *stream)); - -static void -unk_lang_printstr PARAMS ((GDB_FILE *stream, char *string, unsigned int length, int width, int force_ellipses)); - -static struct type * -unk_lang_create_fundamental_type PARAMS ((struct objfile *, int)); - -static void -unk_lang_print_type PARAMS ((struct type *, char *, GDB_FILE *, int, int)); - -static int -unk_lang_val_print PARAMS ((struct type *, char *, int, CORE_ADDR, GDB_FILE *, - int, int, int, enum val_prettyprint)); - -static int -unk_lang_value_print PARAMS ((value_ptr, GDB_FILE *, int, enum val_prettyprint)); - -/* Forward declaration */ -extern const struct language_defn unknown_language_defn; -extern char *warning_pre_print; - -/* The current (default at startup) state of type and range checking. - (If the modes are set to "auto", though, these are changed based - on the default language at startup, and then again based on the - language of the first source file. */ - -enum range_mode range_mode = range_mode_auto; -enum range_check range_check = range_check_off; -enum type_mode type_mode = type_mode_auto; -enum type_check type_check = type_check_off; - -/* The current language and language_mode (see language.h) */ - -const struct language_defn *current_language = &unknown_language_defn; -enum language_mode language_mode = language_mode_auto; - -/* The language that the user expects to be typing in (the language - of main(), or the last language we notified them about, or C). */ - -const struct language_defn *expected_language; - -/* The list of supported languages. The list itself is malloc'd. */ - -static const struct language_defn **languages; -static unsigned languages_size; -static unsigned languages_allocsize; -#define DEFAULT_ALLOCSIZE 4 - -/* The "set language/type/range" commands all put stuff in these - buffers. This is to make them work as set/show commands. The - user's string is copied here, then the set_* commands look at - them and update them to something that looks nice when it is - printed out. */ - -static char *language; -static char *type; -static char *range; - -/* Warning issued when current_language and the language of the current - frame do not match. */ -char lang_frame_mismatch_warn[] = - "Warning: the current language does not match this frame."; - - -/* This page contains the functions corresponding to GDB commands - and their helpers. */ - -/* Show command. Display a warning if the language set - does not match the frame. */ -static void -show_language_command (ignore, from_tty) - char *ignore; - int from_tty; -{ - enum language flang; /* The language of the current frame */ - - flang = get_frame_language(); - if (flang != language_unknown && - language_mode == language_mode_manual && - current_language->la_language != flang) - printf_filtered("%s\n",lang_frame_mismatch_warn); -} - -/* Set command. Change the current working language. */ -static void -set_language_command (ignore, from_tty) - char *ignore; - int from_tty; -{ - int i; - enum language flang; - char *err_lang; - - if (!language || !language[0]) - { - printf_unfiltered("The currently understood settings are:\n\n"); - printf_unfiltered ("local or auto Automatic setting based on source file\n"); - - for (i = 0; i < languages_size; ++i) - { - /* Already dealt with these above. */ - if (languages[i]->la_language == language_unknown - || languages[i]->la_language == language_auto) - continue; - - /* FIXME for now assume that the human-readable name is just - a capitalization of the internal name. */ - printf_unfiltered ("%-16s Use the %c%s language\n", - languages[i]->la_name, - /* Capitalize first letter of language - name. */ - toupper (languages[i]->la_name[0]), - languages[i]->la_name + 1); - } - /* Restore the silly string. */ - set_language(current_language->la_language); - return; - } - - /* Search the list of languages for a match. */ - for (i = 0; i < languages_size; i++) { - if (STREQ (languages[i]->la_name, language)) { - /* Found it! Go into manual mode, and use this language. */ - if (languages[i]->la_language == language_auto) { - /* Enter auto mode. Set to the current frame's language, if known. */ - language_mode = language_mode_auto; - flang = get_frame_language(); - if (flang!=language_unknown) - set_language(flang); - expected_language = current_language; - return; - } else { - /* Enter manual mode. Set the specified language. */ - language_mode = language_mode_manual; - current_language = languages[i]; - set_type_range (); - set_lang_str(); - expected_language = current_language; - return; - } - } - } - - /* Reset the language (esp. the global string "language") to the - correct values. */ - err_lang=savestring(language,strlen(language)); - make_cleanup (free, err_lang); /* Free it after error */ - set_language(current_language->la_language); - error ("Unknown language `%s'.",err_lang); -} - -/* Show command. Display a warning if the type setting does - not match the current language. */ -static void -show_type_command(ignore, from_tty) - char *ignore; - int from_tty; -{ - if (type_check != current_language->la_type_check) - printf_unfiltered( -"Warning: the current type check setting does not match the language.\n"); -} - -/* Set command. Change the setting for type checking. */ -static void -set_type_command(ignore, from_tty) - char *ignore; - int from_tty; -{ - if (STREQ(type,"on")) - { - type_check = type_check_on; - type_mode = type_mode_manual; - } - else if (STREQ(type,"warn")) - { - type_check = type_check_warn; - type_mode = type_mode_manual; - } - else if (STREQ(type,"off")) - { - type_check = type_check_off; - type_mode = type_mode_manual; - } - else if (STREQ(type,"auto")) - { - type_mode = type_mode_auto; - set_type_range(); - /* Avoid hitting the set_type_str call below. We - did it in set_type_range. */ - return; - } - set_type_str(); - show_type_command((char *)NULL, from_tty); -} - -/* Show command. Display a warning if the range setting does - not match the current language. */ -static void -show_range_command(ignore, from_tty) - char *ignore; - int from_tty; -{ - - if (range_check != current_language->la_range_check) - printf_unfiltered( -"Warning: the current range check setting does not match the language.\n"); -} - -/* Set command. Change the setting for range checking. */ -static void -set_range_command(ignore, from_tty) - char *ignore; - int from_tty; -{ - if (STREQ(range,"on")) - { - range_check = range_check_on; - range_mode = range_mode_manual; - } - else if (STREQ(range,"warn")) - { - range_check = range_check_warn; - range_mode = range_mode_manual; - } - else if (STREQ(range,"off")) - { - range_check = range_check_off; - range_mode = range_mode_manual; - } - else if (STREQ(range,"auto")) - { - range_mode = range_mode_auto; - set_type_range(); - /* Avoid hitting the set_range_str call below. We - did it in set_type_range. */ - return; - } - set_range_str(); - show_range_command((char *)0, from_tty); -} - -/* Set the status of range and type checking based on - the current modes and the current language. - If SHOW is non-zero, then print out the current language, - type and range checking status. */ -static void -set_type_range() -{ - - if (range_mode == range_mode_auto) - range_check = current_language->la_range_check; - - if (type_mode == type_mode_auto) - type_check = current_language->la_type_check; - - set_type_str(); - set_range_str(); -} - -/* Set current language to (enum language) LANG. Returns previous language. */ - -enum language -set_language(lang) - enum language lang; -{ - int i; - enum language prev_language; - - prev_language = current_language->la_language; - - for (i = 0; i < languages_size; i++) { - if (languages[i]->la_language == lang) { - current_language = languages[i]; - set_type_range (); - set_lang_str(); - break; - } - } - - return prev_language; -} - -/* This page contains functions that update the global vars - language, type and range. */ -static void -set_lang_str() -{ - char *prefix = ""; - - free (language); - if (language_mode == language_mode_auto) - prefix = "auto; currently "; - - language = concat(prefix, current_language->la_name, NULL); -} - -static void -set_type_str() -{ - char *tmp, *prefix = ""; - - free (type); - if (type_mode==type_mode_auto) - prefix = "auto; currently "; - - switch(type_check) - { - case type_check_on: - tmp = "on"; - break; - case type_check_off: - tmp = "off"; - break; - case type_check_warn: - tmp = "warn"; - break; - default: - error ("Unrecognized type check setting."); - } - - type = concat(prefix,tmp,NULL); -} - -static void -set_range_str() -{ - char *tmp, *pref = ""; - - free (range); - if (range_mode==range_mode_auto) - pref = "auto; currently "; - - switch(range_check) - { - case range_check_on: - tmp = "on"; - break; - case range_check_off: - tmp = "off"; - break; - case range_check_warn: - tmp = "warn"; - break; - default: - error ("Unrecognized range check setting."); - } - - range = concat(pref,tmp,NULL); -} - - -/* Print out the current language settings: language, range and - type checking. If QUIETLY, print only what has changed. */ - -void -language_info (quietly) - int quietly; -{ - if (quietly && expected_language == current_language) - return; - - expected_language = current_language; - printf_unfiltered("Current language: %s\n",language); - show_language_command((char *)0, 1); - - if (!quietly) - { - printf_unfiltered("Type checking: %s\n",type); - show_type_command((char *)0, 1); - printf_unfiltered("Range checking: %s\n",range); - show_range_command((char *)0, 1); - } -} - -/* Return the result of a binary operation. */ - -#if 0 /* Currently unused */ - -struct type * -binop_result_type (v1, v2) - value_ptr v1, v2; -{ - int size,uns; - struct type *t1 = check_typedef (VALUE_TYPE (v1)); - struct type *t2 = check_typedef (VALUE_TYPE (v2)); - - int l1 = TYPE_LENGTH (t1); - int l2 = TYPE_LENGTH (t2); - - switch(current_language->la_language) - { - case language_c: - case language_cplus: - if (TYPE_CODE (t1)==TYPE_CODE_FLT) - return TYPE_CODE(t2) == TYPE_CODE_FLT && l2 > l1 ? - VALUE_TYPE(v2) : VALUE_TYPE(v1); - else if (TYPE_CODE(t2)==TYPE_CODE_FLT) - return TYPE_CODE(t1)) == TYPE_CODE_FLT && l1 > l2 ? - VALUE_TYPE(v1) : VALUE_TYPE(v2); - else if (TYPE_UNSIGNED(t1) && l1 > l2) - return VALUE_TYPE(v1); - else if (TYPE_UNSIGNED(t2) && l2 > l1) - return VALUE_TYPE(v2); - else /* Both are signed. Result is the longer type */ - return l1 > l2 ? VALUE_TYPE(v1) : VALUE_TYPE(v2); - break; - case language_m2: - /* If we are doing type-checking, l1 should equal l2, so this is - not needed. */ - return l1 > l2 ? VALUE_TYPE(v1) : VALUE_TYPE(v2); - break; - case language_chill: - error ("Missing Chill support in function binop_result_check.");/*FIXME*/ - } - abort(); - return (struct type *)0; /* For lint */ -} - -#endif /* 0 */ - - -/* This page contains functions that return format strings for - printf for printing out numbers in different formats */ - -/* Returns the appropriate printf format for hexadecimal - numbers. */ -char * -local_hex_format_custom(pre) - char *pre; -{ - static char form[50]; - - strcpy (form, local_hex_format_prefix ()); - strcat (form, "%"); - strcat (form, pre); - strcat (form, local_hex_format_specifier ()); - strcat (form, local_hex_format_suffix ()); - return form; -} - -/* Converts a number to hexadecimal and stores it in a static - string. Returns a pointer to this string. */ -char * -local_hex_string (num) - unsigned long num; -{ - static char res[50]; - - sprintf (res, local_hex_format(), num); - return res; -} - -/* Converts a number to custom hexadecimal and stores it in a static - string. Returns a pointer to this string. */ -char * -local_hex_string_custom(num,pre) - unsigned long num; - char *pre; -{ - static char res[50]; - - sprintf (res, local_hex_format_custom(pre), num); - return res; -} - -/* Returns the appropriate printf format for octal - numbers. */ -char * -local_octal_format_custom(pre) - char *pre; -{ - static char form[50]; - - strcpy (form, local_octal_format_prefix ()); - strcat (form, "%"); - strcat (form, pre); - strcat (form, local_octal_format_specifier ()); - strcat (form, local_octal_format_suffix ()); - return form; -} - -/* Returns the appropriate printf format for decimal numbers. */ -char * -local_decimal_format_custom(pre) - char *pre; -{ - static char form[50]; - - strcpy (form, local_decimal_format_prefix ()); - strcat (form, "%"); - strcat (form, pre); - strcat (form, local_decimal_format_specifier ()); - strcat (form, local_decimal_format_suffix ()); - return form; -} - -#if 0 -/* This page contains functions that are used in type/range checking. - They all return zero if the type/range check fails. - - It is hoped that these will make extending GDB to parse different - languages a little easier. These are primarily used in eval.c when - evaluating expressions and making sure that their types are correct. - Instead of having a mess of conjucted/disjuncted expressions in an "if", - the ideas of type can be wrapped up in the following functions. - - Note that some of them are not currently dependent upon which language - is currently being parsed. For example, floats are the same in - C and Modula-2 (ie. the only floating point type has TYPE_CODE of - TYPE_CODE_FLT), while booleans are different. */ - -/* Returns non-zero if its argument is a simple type. This is the same for - both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur, - and thus will never cause the failure of the test. */ -int -simple_type(type) - struct type *type; -{ - CHECK_TYPEDEF (type); - switch (TYPE_CODE (type)) { - case TYPE_CODE_INT: - case TYPE_CODE_CHAR: - case TYPE_CODE_ENUM: - case TYPE_CODE_FLT: - case TYPE_CODE_RANGE: - case TYPE_CODE_BOOL: - return 1; - - default: - return 0; - } -} - -/* Returns non-zero if its argument is of an ordered type. - An ordered type is one in which the elements can be tested for the - properties of "greater than", "less than", etc, or for which the - operations "increment" or "decrement" make sense. */ -int -ordered_type (type) - struct type *type; -{ - CHECK_TYPEDEF (type); - switch (TYPE_CODE (type)) { - case TYPE_CODE_INT: - case TYPE_CODE_CHAR: - case TYPE_CODE_ENUM: - case TYPE_CODE_FLT: - case TYPE_CODE_RANGE: - return 1; - - default: - return 0; - } -} - -/* Returns non-zero if the two types are the same */ -int -same_type (arg1, arg2) - struct type *arg1, *arg2; -{ - CHECK_TYPEDEF (type); - if (structured_type(arg1) ? !structured_type(arg2) : structured_type(arg2)) - /* One is structured and one isn't */ - return 0; - else if (structured_type(arg1) && structured_type(arg2)) - return arg1 == arg2; - else if (numeric_type(arg1) && numeric_type(arg2)) - return (TYPE_CODE(arg2) == TYPE_CODE(arg1)) && - (TYPE_UNSIGNED(arg1) == TYPE_UNSIGNED(arg2)) - ? 1 : 0; - else - return arg1==arg2; -} - -/* Returns non-zero if the type is integral */ -int -integral_type (type) - struct type *type; -{ - CHECK_TYPEDEF (type); - switch(current_language->la_language) - { - case language_c: - case language_cplus: - return (TYPE_CODE(type) != TYPE_CODE_INT) && - (TYPE_CODE(type) != TYPE_CODE_ENUM) ? 0 : 1; - case language_m2: - return TYPE_CODE(type) != TYPE_CODE_INT ? 0 : 1; - case language_chill: - error ("Missing Chill support in function integral_type."); /*FIXME*/ - default: - error ("Language not supported."); - } -} - -/* Returns non-zero if the value is numeric */ -int -numeric_type (type) - struct type *type; -{ - CHECK_TYPEDEF (type); - switch (TYPE_CODE (type)) { - case TYPE_CODE_INT: - case TYPE_CODE_FLT: - return 1; - - default: - return 0; - } -} - -/* Returns non-zero if the value is a character type */ -int -character_type (type) - struct type *type; -{ - CHECK_TYPEDEF (type); - switch(current_language->la_language) - { - case language_chill: - case language_m2: - return TYPE_CODE(type) != TYPE_CODE_CHAR ? 0 : 1; - - case language_c: - case language_cplus: - return (TYPE_CODE(type) == TYPE_CODE_INT) && - TYPE_LENGTH(type) == sizeof(char) - ? 1 : 0; - default: - return (0); - } -} - -/* Returns non-zero if the value is a string type */ -int -string_type (type) - struct type *type; -{ - CHECK_TYPEDEF (type); - switch(current_language->la_language) - { - case language_chill: - case language_m2: - return TYPE_CODE(type) != TYPE_CODE_STRING ? 0 : 1; - - case language_c: - case language_cplus: - /* C does not have distinct string type. */ - return (0); - default: - return (0); - } -} - -/* Returns non-zero if the value is a boolean type */ -int -boolean_type (type) - struct type *type; -{ - CHECK_TYPEDEF (type); - if (TYPE_CODE (type) == TYPE_CODE_BOOL) - return 1; - switch(current_language->la_language) - { - case language_c: - case language_cplus: - /* Might be more cleanly handled by having a TYPE_CODE_INT_NOT_BOOL - for CHILL and such languages, or a TYPE_CODE_INT_OR_BOOL for C. */ - if (TYPE_CODE (type) == TYPE_CODE_INT) - return 1; - default: - break; - } - return 0; -} - -/* Returns non-zero if the value is a floating-point type */ -int -float_type (type) - struct type *type; -{ - CHECK_TYPEDEF (type); - return TYPE_CODE(type) == TYPE_CODE_FLT; -} - -/* Returns non-zero if the value is a pointer type */ -int -pointer_type(type) - struct type *type; -{ - return TYPE_CODE(type) == TYPE_CODE_PTR || - TYPE_CODE(type) == TYPE_CODE_REF; -} - -/* Returns non-zero if the value is a structured type */ -int -structured_type(type) - struct type *type; -{ - CHECK_TYPEDEF (type); - switch(current_language->la_language) - { - case language_c: - case language_cplus: - return (TYPE_CODE(type) == TYPE_CODE_STRUCT) || - (TYPE_CODE(type) == TYPE_CODE_UNION) || - (TYPE_CODE(type) == TYPE_CODE_ARRAY); - case language_m2: - return (TYPE_CODE(type) == TYPE_CODE_STRUCT) || - (TYPE_CODE(type) == TYPE_CODE_SET) || - (TYPE_CODE(type) == TYPE_CODE_ARRAY); - case language_chill: - error ("Missing Chill support in function structured_type."); /*FIXME*/ - default: - return (0); - } -} -#endif - -struct type * -lang_bool_type () -{ - struct symbol *sym; - struct type *type; - switch(current_language->la_language) - { - case language_chill: - return builtin_type_chill_bool; - case language_fortran: - sym = lookup_symbol ("logical", NULL, VAR_NAMESPACE, NULL, NULL); - if (sym) - { - type = SYMBOL_TYPE (sym); - if (type && TYPE_CODE (type) == TYPE_CODE_BOOL) - return type; - } - return builtin_type_f_logical_s2; - case language_cplus: - sym = lookup_symbol ("bool", NULL, VAR_NAMESPACE, NULL, NULL); - if (sym) - { - type = SYMBOL_TYPE (sym); - if (type && TYPE_CODE (type) == TYPE_CODE_BOOL) - return type; - } - return builtin_type_bool; - default: - return builtin_type_int; - } -} - -/* This page contains functions that return info about - (struct value) values used in GDB. */ - -/* Returns non-zero if the value VAL represents a true value. */ -int -value_true (val) - value_ptr val; -{ - /* It is possible that we should have some sort of error if a non-boolean - value is used in this context. Possibly dependent on some kind of - "boolean-checking" option like range checking. But it should probably - not depend on the language except insofar as is necessary to identify - a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean - should be an error, probably). */ - return !value_logical_not (val); -} - -/* Returns non-zero if the operator OP is defined on - the values ARG1 and ARG2. */ - -#if 0 /* Currently unused */ - -void -binop_type_check(arg1,arg2,op) - value_ptr arg1,arg2; - int op; -{ - struct type *t1, *t2; - - /* If we're not checking types, always return success. */ - if (!STRICT_TYPE) - return; - - t1=VALUE_TYPE(arg1); - if (arg2 != NULL) - t2=VALUE_TYPE(arg2); - else - t2=NULL; - - switch(op) - { - case BINOP_ADD: - case BINOP_SUB: - if ((numeric_type(t1) && pointer_type(t2)) || - (pointer_type(t1) && numeric_type(t2))) - { - warning ("combining pointer and integer.\n"); - break; - } - case BINOP_MUL: - case BINOP_LSH: - case BINOP_RSH: - if (!numeric_type(t1) || !numeric_type(t2)) - type_op_error ("Arguments to %s must be numbers.",op); - else if (!same_type(t1,t2)) - type_op_error ("Arguments to %s must be of the same type.",op); - break; - - case BINOP_LOGICAL_AND: - case BINOP_LOGICAL_OR: - if (!boolean_type(t1) || !boolean_type(t2)) - type_op_error ("Arguments to %s must be of boolean type.",op); - break; - - case BINOP_EQUAL: - if ((pointer_type(t1) && !(pointer_type(t2) || integral_type(t2))) || - (pointer_type(t2) && !(pointer_type(t1) || integral_type(t1)))) - type_op_error ("A pointer can only be compared to an integer or pointer.",op); - else if ((pointer_type(t1) && integral_type(t2)) || - (integral_type(t1) && pointer_type(t2))) - { - warning ("combining integer and pointer.\n"); - break; - } - else if (!simple_type(t1) || !simple_type(t2)) - type_op_error ("Arguments to %s must be of simple type.",op); - else if (!same_type(t1,t2)) - type_op_error ("Arguments to %s must be of the same type.",op); - break; - - case BINOP_REM: - case BINOP_MOD: - if (!integral_type(t1) || !integral_type(t2)) - type_op_error ("Arguments to %s must be of integral type.",op); - break; - - case BINOP_LESS: - case BINOP_GTR: - case BINOP_LEQ: - case BINOP_GEQ: - if (!ordered_type(t1) || !ordered_type(t2)) - type_op_error ("Arguments to %s must be of ordered type.",op); - else if (!same_type(t1,t2)) - type_op_error ("Arguments to %s must be of the same type.",op); - break; - - case BINOP_ASSIGN: - if (pointer_type(t1) && !integral_type(t2)) - type_op_error ("A pointer can only be assigned an integer.",op); - else if (pointer_type(t1) && integral_type(t2)) - { - warning ("combining integer and pointer."); - break; - } - else if (!simple_type(t1) || !simple_type(t2)) - type_op_error ("Arguments to %s must be of simple type.",op); - else if (!same_type(t1,t2)) - type_op_error ("Arguments to %s must be of the same type.",op); - break; - - case BINOP_CONCAT: - /* FIXME: Needs to handle bitstrings as well. */ - if (!(string_type(t1) || character_type(t1) || integral_type(t1)) - || !(string_type(t2) || character_type(t2) || integral_type(t2))) - type_op_error ("Arguments to %s must be strings or characters.", op); - break; - - /* Unary checks -- arg2 is null */ - - case UNOP_LOGICAL_NOT: - if (!boolean_type(t1)) - type_op_error ("Argument to %s must be of boolean type.",op); - break; - - case UNOP_PLUS: - case UNOP_NEG: - if (!numeric_type(t1)) - type_op_error ("Argument to %s must be of numeric type.",op); - break; - - case UNOP_IND: - if (integral_type(t1)) - { - warning ("combining pointer and integer.\n"); - break; - } - else if (!pointer_type(t1)) - type_op_error ("Argument to %s must be a pointer.",op); - break; - - case UNOP_PREINCREMENT: - case UNOP_POSTINCREMENT: - case UNOP_PREDECREMENT: - case UNOP_POSTDECREMENT: - if (!ordered_type(t1)) - type_op_error ("Argument to %s must be of an ordered type.",op); - break; - - default: - /* Ok. The following operators have different meanings in - different languages. */ - switch(current_language->la_language) - { -#ifdef _LANG_c - case language_c: - case language_cplus: - switch(op) - { - case BINOP_DIV: - if (!numeric_type(t1) || !numeric_type(t2)) - type_op_error ("Arguments to %s must be numbers.",op); - break; - } - break; -#endif - -#ifdef _LANG_m2 - case language_m2: - switch(op) - { - case BINOP_DIV: - if (!float_type(t1) || !float_type(t2)) - type_op_error ("Arguments to %s must be floating point numbers.",op); - break; - case BINOP_INTDIV: - if (!integral_type(t1) || !integral_type(t2)) - type_op_error ("Arguments to %s must be of integral type.",op); - break; - } -#endif - -#ifdef _LANG_chill - case language_chill: - error ("Missing Chill support in function binop_type_check.");/*FIXME*/ -#endif - - } - } -} - -#endif /* 0 */ - - -/* This page contains functions for the printing out of - error messages that occur during type- and range- - checking. */ - -/* Prints the format string FMT with the operator as a string - corresponding to the opcode OP. If FATAL is non-zero, then - this is an error and error () is called. Otherwise, it is - a warning and printf() is called. */ -void -op_error (fmt,op,fatal) - char *fmt; - enum exp_opcode op; - int fatal; -{ - if (fatal) - error (fmt,op_string(op)); - else - { - warning (fmt,op_string(op)); - } -} - -/* These are called when a language fails a type- or range-check. - The first argument should be a printf()-style format string, and - the rest of the arguments should be its arguments. If - [type|range]_check is [type|range]_check_on, then return_to_top_level() - is called in the style of error (). Otherwise, the message is prefixed - by the value of warning_pre_print and we do not return to the top level. */ - -void -#ifdef ANSI_PROTOTYPES -type_error (char *string, ...) -#else -type_error (va_alist) - va_dcl -#endif -{ - va_list args; -#ifdef ANSI_PROTOTYPES - va_start (args, string); -#else - char *string; - va_start (args); - string = va_arg (args, char *); -#endif - - if (type_check == type_check_warn) - fprintf_filtered (gdb_stderr, warning_pre_print); - else - error_begin (); - - vfprintf_filtered (gdb_stderr, string, args); - fprintf_filtered (gdb_stderr, "\n"); - va_end (args); - if (type_check == type_check_on) - return_to_top_level (RETURN_ERROR); -} - -void -#ifdef ANSI_PROTOTYPES -range_error (char *string, ...) -#else -range_error (va_alist) - va_dcl -#endif -{ - va_list args; -#ifdef ANSI_PROTOTYPES - va_start (args, string); -#else - char *string; - va_start (args); - string = va_arg (args, char *); -#endif - - if (range_check == range_check_warn) - fprintf_filtered (gdb_stderr, warning_pre_print); - else - error_begin (); - - vfprintf_filtered (gdb_stderr, string, args); - fprintf_filtered (gdb_stderr, "\n"); - va_end (args); - if (range_check == range_check_on) - return_to_top_level (RETURN_ERROR); -} - - -/* This page contains miscellaneous functions */ - -/* Return the language enum for a given language string. */ - -enum language -language_enum (str) - char *str; -{ - int i; - - for (i = 0; i < languages_size; i++) - if (STREQ (languages[i]->la_name, str)) - return languages[i]->la_language; - - return language_unknown; -} - -/* Return the language struct for a given language enum. */ - -const struct language_defn * -language_def(lang) - enum language lang; -{ - int i; - - for (i = 0; i < languages_size; i++) { - if (languages[i]->la_language == lang) { - return languages[i]; - } - } - return NULL; -} - -/* Return the language as a string */ -char * -language_str(lang) - enum language lang; -{ - int i; - - for (i = 0; i < languages_size; i++) { - if (languages[i]->la_language == lang) { - return languages[i]->la_name; - } - } - return "Unknown"; -} - -static void -set_check (ignore, from_tty) - char *ignore; - int from_tty; -{ - printf_unfiltered( -"\"set check\" must be followed by the name of a check subcommand.\n"); - help_list(setchecklist, "set check ", -1, gdb_stdout); -} - -static void -show_check (ignore, from_tty) - char *ignore; - int from_tty; -{ - cmd_show_list(showchecklist, from_tty, ""); -} - -/* Add a language to the set of known languages. */ - -void -add_language (lang) - const struct language_defn *lang; -{ - if (lang->la_magic != LANG_MAGIC) - { - fprintf_unfiltered(gdb_stderr, "Magic number of %s language struct wrong\n", - lang->la_name); - abort(); - } - - if (!languages) - { - languages_allocsize = DEFAULT_ALLOCSIZE; - languages = (const struct language_defn **) xmalloc - (languages_allocsize * sizeof (*languages)); - } - if (languages_size >= languages_allocsize) - { - languages_allocsize *= 2; - languages = (const struct language_defn **) xrealloc ((char *) languages, - languages_allocsize * sizeof (*languages)); - } - languages[languages_size++] = lang; -} - -/* Define the language that is no language. */ - -static int -unk_lang_parser () -{ - return 1; -} - -static void -unk_lang_error (msg) - char *msg; -{ - error ("Attempted to parse an expression with unknown language"); -} - -static void -unk_lang_emit_char (c, stream, quoter) - register int c; - GDB_FILE *stream; - int quoter; -{ - error ("internal error - unimplemented function unk_lang_emit_char called."); -} - -static void -unk_lang_printchar (c, stream) - register int c; - GDB_FILE *stream; -{ - error ("internal error - unimplemented function unk_lang_printchar called."); -} - -static void -unk_lang_printstr (stream, string, length, width, force_ellipses) - GDB_FILE *stream; - char *string; - unsigned int length; - int width; - int force_ellipses; -{ - error ("internal error - unimplemented function unk_lang_printstr called."); -} - -static struct type * -unk_lang_create_fundamental_type (objfile, typeid) - struct objfile *objfile; - int typeid; -{ - error ("internal error - unimplemented function unk_lang_create_fundamental_type called."); -} - -static void -unk_lang_print_type (type, varstring, stream, show, level) - struct type *type; - char *varstring; - GDB_FILE *stream; - int show; - int level; -{ - error ("internal error - unimplemented function unk_lang_print_type called."); -} - -static int -unk_lang_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref, - recurse, pretty) - struct type *type; - char *valaddr; - int embedded_offset; - CORE_ADDR address; - GDB_FILE *stream; - int format; - int deref_ref; - int recurse; - enum val_prettyprint pretty; -{ - error ("internal error - unimplemented function unk_lang_val_print called."); -} - -static int -unk_lang_value_print (val, stream, format, pretty) - value_ptr val; - GDB_FILE *stream; - int format; - enum val_prettyprint pretty; -{ - error ("internal error - unimplemented function unk_lang_value_print called."); -} - -static struct type ** CONST_PTR (unknown_builtin_types[]) = { 0 }; -static const struct op_print unk_op_print_tab[] = { - {NULL, OP_NULL, PREC_NULL, 0} -}; - -const struct language_defn unknown_language_defn = { - "unknown", - language_unknown, - &unknown_builtin_types[0], - range_check_off, - type_check_off, - unk_lang_parser, - unk_lang_error, - evaluate_subexp_standard, - unk_lang_printchar, /* Print character constant */ - unk_lang_printstr, - unk_lang_emit_char, - unk_lang_create_fundamental_type, - unk_lang_print_type, /* Print a type using appropriate syntax */ - unk_lang_val_print, /* Print a value using appropriate syntax */ - unk_lang_value_print, /* Print a top-level value */ - {"", "", "", ""}, /* Binary format info */ - {"0%lo", "0", "o", ""}, /* Octal format info */ - {"%ld", "", "d", ""}, /* Decimal format info */ - {"0x%lx", "0x", "x", ""}, /* Hex format info */ - unk_op_print_tab, /* expression operators for printing */ - 1, /* c-style arrays */ - 0, /* String lower bound */ - &builtin_type_char, /* Type of string elements */ - LANG_MAGIC -}; - -/* These two structs define fake entries for the "local" and "auto" options. */ -const struct language_defn auto_language_defn = { - "auto", - language_auto, - &unknown_builtin_types[0], - range_check_off, - type_check_off, - unk_lang_parser, - unk_lang_error, - evaluate_subexp_standard, - unk_lang_printchar, /* Print character constant */ - unk_lang_printstr, - unk_lang_emit_char, - unk_lang_create_fundamental_type, - unk_lang_print_type, /* Print a type using appropriate syntax */ - unk_lang_val_print, /* Print a value using appropriate syntax */ - unk_lang_value_print, /* Print a top-level value */ - {"", "", "", ""}, /* Binary format info */ - {"0%lo", "0", "o", ""}, /* Octal format info */ - {"%ld", "", "d", ""}, /* Decimal format info */ - {"0x%lx", "0x", "x", ""}, /* Hex format info */ - unk_op_print_tab, /* expression operators for printing */ - 1, /* c-style arrays */ - 0, /* String lower bound */ - &builtin_type_char, /* Type of string elements */ - LANG_MAGIC -}; - -const struct language_defn local_language_defn = { - "local", - language_auto, - &unknown_builtin_types[0], - range_check_off, - type_check_off, - unk_lang_parser, - unk_lang_error, - evaluate_subexp_standard, - unk_lang_printchar, /* Print character constant */ - unk_lang_printstr, - unk_lang_emit_char, - unk_lang_create_fundamental_type, - unk_lang_print_type, /* Print a type using appropriate syntax */ - unk_lang_val_print, /* Print a value using appropriate syntax */ - unk_lang_value_print, /* Print a top-level value */ - {"", "", "", ""}, /* Binary format info */ - {"0%lo", "0", "o", ""}, /* Octal format info */ - {"%ld", "", "d", ""}, /* Decimal format info */ - {"0x%lx", "0x", "x", ""}, /* Hex format info */ - unk_op_print_tab, /* expression operators for printing */ - 1, /* c-style arrays */ - 0, /* String lower bound */ - &builtin_type_char, /* Type of string elements */ - LANG_MAGIC -}; - -/* Initialize the language routines */ - -void -_initialize_language() -{ - struct cmd_list_element *set, *show; - - /* GDB commands for language specific stuff */ - - set = add_set_cmd ("language", class_support, var_string_noescape, - (char *)&language, - "Set the current source language.", - &setlist); - show = add_show_from_set (set, &showlist); - set->function.cfunc = set_language_command; - show->function.cfunc = show_language_command; - - add_prefix_cmd ("check", no_class, set_check, - "Set the status of the type/range checker", - &setchecklist, "set check ", 0, &setlist); - add_alias_cmd ("c", "check", no_class, 1, &setlist); - add_alias_cmd ("ch", "check", no_class, 1, &setlist); - - add_prefix_cmd ("check", no_class, show_check, - "Show the status of the type/range checker", - &showchecklist, "show check ", 0, &showlist); - add_alias_cmd ("c", "check", no_class, 1, &showlist); - add_alias_cmd ("ch", "check", no_class, 1, &showlist); - - set = add_set_cmd ("type", class_support, var_string_noescape, - (char *)&type, - "Set type checking. (on/warn/off/auto)", - &setchecklist); - show = add_show_from_set (set, &showchecklist); - set->function.cfunc = set_type_command; - show->function.cfunc = show_type_command; - - set = add_set_cmd ("range", class_support, var_string_noescape, - (char *)&range, - "Set range checking. (on/warn/off/auto)", - &setchecklist); - show = add_show_from_set (set, &showchecklist); - set->function.cfunc = set_range_command; - show->function.cfunc = show_range_command; - - add_language (&unknown_language_defn); - add_language (&local_language_defn); - add_language (&auto_language_defn); - - language = savestring ("auto",strlen("auto")); - range = savestring ("auto",strlen("auto")); - type = savestring ("auto",strlen("auto")); - - /* Have the above take effect */ - - set_language_command (language, 0); - set_type_command (NULL, 0); - set_range_command (NULL, 0); -} -- cgit v1.1