/* Pascal language support routines for GDB, the GNU debugger.
- Copyright 2000 Free Software Foundation, Inc.
+
+ Copyright (C) 2000-2019 Free Software Foundation, Inc.
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
-/* This file is derived from p-lang.c */
+/* This file is derived from c-lang.c */
#include "defs.h"
#include "symtab.h"
#include "expression.h"
#include "parser-defs.h"
#include "language.h"
+#include "varobj.h"
#include "p-lang.h"
#include "valprint.h"
+#include "value.h"
+#include <ctype.h>
+#include "c-lang.h"
+
+/* All GPC versions until now (2007-09-27) also define a symbol called
+ '_p_initialize'. Check for the presence of this symbol first. */
+static const char GPC_P_INITIALIZE[] = "_p_initialize";
+
+/* The name of the symbol that GPC uses as the name of the main
+ procedure (since version 20050212). */
+static const char GPC_MAIN_PROGRAM_NAME_1[] = "_p__M0_main_program";
+
+/* Older versions of GPC (versions older than 20050212) were using
+ a different name for the main procedure. */
+static const char GPC_MAIN_PROGRAM_NAME_2[] = "pascal_main_program";
+
+/* Function returning the special symbol name used
+ by GPC for the main procedure in the main program
+ if it is found in minimal symbol list.
+ This function tries to find minimal symbols generated by GPC
+ so that it finds the even if the program was compiled
+ without debugging information.
+ According to information supplied by Waldeck Hebisch,
+ this should work for all versions posterior to June 2000. */
+
+const char *
+pascal_main_name (void)
+{
+ struct bound_minimal_symbol msym;
+
+ msym = lookup_minimal_symbol (GPC_P_INITIALIZE, NULL, NULL);
+
+ /* If '_p_initialize' was not found, the main program is likely not
+ written in Pascal. */
+ if (msym.minsym == NULL)
+ return NULL;
+
+ msym = lookup_minimal_symbol (GPC_MAIN_PROGRAM_NAME_1, NULL, NULL);
+ if (msym.minsym != NULL)
+ {
+ return GPC_MAIN_PROGRAM_NAME_1;
+ }
+
+ msym = lookup_minimal_symbol (GPC_MAIN_PROGRAM_NAME_2, NULL, NULL);
+ if (msym.minsym != NULL)
+ {
+ return GPC_MAIN_PROGRAM_NAME_2;
+ }
+
+ /* No known entry procedure found, the main program is probably
+ not compiled with GPC. */
+ return NULL;
+}
+
+/* Determines if type TYPE is a pascal string type.
+ Returns a positive value if the type is a known pascal string type.
+ This function is used by p-valprint.c code to allow better string display.
+ If it is a pascal string type, then it also sets info needed
+ to get the length and the data of the string
+ length_pos, length_size and string_pos are given in bytes.
+ char_size gives the element size in bytes.
+ FIXME: if the position or the size of these fields
+ are not multiple of TARGET_CHAR_BIT then the results are wrong
+ but this does not happen for Free Pascal nor for GPC. */
+int
+is_pascal_string_type (struct type *type,int *length_pos,
+ int *length_size, int *string_pos,
+ struct type **char_type,
+ const char **arrayname)
+{
+ if (type != NULL && TYPE_CODE (type) == TYPE_CODE_STRUCT)
+ {
+ /* Old Borland type pascal strings from Free Pascal Compiler. */
+ /* Two fields: length and st. */
+ if (TYPE_NFIELDS (type) == 2
+ && TYPE_FIELD_NAME (type, 0)
+ && strcmp (TYPE_FIELD_NAME (type, 0), "length") == 0
+ && TYPE_FIELD_NAME (type, 1)
+ && strcmp (TYPE_FIELD_NAME (type, 1), "st") == 0)
+ {
+ if (length_pos)
+ *length_pos = TYPE_FIELD_BITPOS (type, 0) / TARGET_CHAR_BIT;
+ if (length_size)
+ *length_size = TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0));
+ if (string_pos)
+ *string_pos = TYPE_FIELD_BITPOS (type, 1) / TARGET_CHAR_BIT;
+ if (char_type)
+ *char_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 1));
+ if (arrayname)
+ *arrayname = TYPE_FIELD_NAME (type, 1);
+ return 2;
+ };
+ /* GNU pascal strings. */
+ /* Three fields: Capacity, length and schema$ or _p_schema. */
+ if (TYPE_NFIELDS (type) == 3
+ && TYPE_FIELD_NAME (type, 0)
+ && strcmp (TYPE_FIELD_NAME (type, 0), "Capacity") == 0
+ && TYPE_FIELD_NAME (type, 1)
+ && strcmp (TYPE_FIELD_NAME (type, 1), "length") == 0)
+ {
+ if (length_pos)
+ *length_pos = TYPE_FIELD_BITPOS (type, 1) / TARGET_CHAR_BIT;
+ if (length_size)
+ *length_size = TYPE_LENGTH (TYPE_FIELD_TYPE (type, 1));
+ if (string_pos)
+ *string_pos = TYPE_FIELD_BITPOS (type, 2) / TARGET_CHAR_BIT;
+ /* FIXME: how can I detect wide chars in GPC ?? */
+ if (char_type)
+ {
+ *char_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 2));
+
+ if (TYPE_CODE (*char_type) == TYPE_CODE_ARRAY)
+ *char_type = TYPE_TARGET_TYPE (*char_type);
+ }
+ if (arrayname)
+ *arrayname = TYPE_FIELD_NAME (type, 2);
+ return 3;
+ };
+ }
+ return 0;
+}
+
+/* This is a wrapper around IS_PASCAL_STRING_TYPE that returns true if TYPE
+ is a string. */
+
+static bool
+pascal_is_string_type_p (struct type *type)
+{
+ return is_pascal_string_type (type, nullptr, nullptr, nullptr,
+ nullptr, nullptr) > 0;
+}
-extern void _initialize_pascal_language (void);
static void pascal_one_char (int, struct ui_file *, int *);
/* Print the character C on STREAM as part of the contents of a literal
string.
- In_quotes is reset to 0 if a char is written with #4 notation */
+ In_quotes is reset to 0 if a char is written with #4 notation. */
static void
-pascal_one_char (register int c, struct ui_file *stream, int *in_quotes)
+pascal_one_char (int c, struct ui_file *stream, int *in_quotes)
{
-
- c &= 0xFF; /* Avoid sign bit follies */
-
- if ((c == '\'') || (PRINT_LITERAL_FORM (c)))
+ if (c == '\'' || ((unsigned int) c <= 0xff && (PRINT_LITERAL_FORM (c))))
{
if (!(*in_quotes))
fputs_filtered ("'", stream);
}
}
-static void pascal_emit_char (int c, struct ui_file *stream, int quoter);
+static void pascal_emit_char (int c, struct type *type,
+ struct ui_file *stream, int quoter);
/* Print the character C on STREAM as part of the contents of a literal
string whose delimiter is QUOTER. Note that that format for printing
- characters and strings is language specific. */
+ characters and strings is language specific. */
static void
-pascal_emit_char (register int c, struct ui_file *stream, int quoter)
+pascal_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
{
int in_quotes = 0;
+
pascal_one_char (c, stream, &in_quotes);
if (in_quotes)
fputs_filtered ("'", stream);
}
void
-pascal_printchar (int c, struct ui_file *stream)
+pascal_printchar (int c, struct type *type, struct ui_file *stream)
{
int in_quotes = 0;
+
pascal_one_char (c, stream, &in_quotes);
if (in_quotes)
fputs_filtered ("'", stream);
had to stop before printing LENGTH characters, or if FORCE_ELLIPSES. */
void
-pascal_printstr (struct ui_file *stream, char *string, unsigned int length,
- int width, int force_ellipses)
+pascal_printstr (struct ui_file *stream, struct type *type,
+ const gdb_byte *string, unsigned int length,
+ const char *encoding, int force_ellipses,
+ const struct value_print_options *options)
{
- register unsigned int i;
+ enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
+ unsigned int i;
unsigned int things_printed = 0;
int in_quotes = 0;
int need_comma = 0;
- extern int inspect_it;
+ int width;
+
+ /* Preserve TYPE's original type, just set its LENGTH. */
+ check_typedef (type);
+ width = TYPE_LENGTH (type);
/* If the string was not truncated due to `set print elements', and
the last byte of it is a null, we don't print that, in traditional C
style. */
- if ((!force_ellipses) && length > 0 && string[length - 1] == '\0')
+ if ((!force_ellipses) && length > 0
+ && extract_unsigned_integer (string + (length - 1) * width, width,
+ byte_order) == 0)
length--;
if (length == 0)
return;
}
- for (i = 0; i < length && things_printed < print_max; ++i)
+ for (i = 0; i < length && things_printed < options->print_max; ++i)
{
/* Position of the character we are examining
to see whether it is repeated. */
unsigned int rep1;
/* Number of repetitions we have detected so far. */
unsigned int reps;
+ unsigned long int current_char;
QUIT;
need_comma = 0;
}
+ current_char = extract_unsigned_integer (string + i * width, width,
+ byte_order);
+
rep1 = i + 1;
reps = 1;
- while (rep1 < length && string[rep1] == string[i])
+ while (rep1 < length
+ && extract_unsigned_integer (string + rep1 * width, width,
+ byte_order) == current_char)
{
++rep1;
++reps;
}
- if (reps > repeat_count_threshold)
+ if (reps > options->repeat_count_threshold)
{
if (in_quotes)
{
- if (inspect_it)
- fputs_filtered ("\\', ", stream);
- else
- fputs_filtered ("', ", stream);
+ fputs_filtered ("', ", stream);
in_quotes = 0;
}
- pascal_printchar (string[i], stream);
+ pascal_printchar (current_char, type, stream);
fprintf_filtered (stream, " <repeats %u times>", reps);
i = rep1 - 1;
- things_printed += repeat_count_threshold;
+ things_printed += options->repeat_count_threshold;
need_comma = 1;
}
else
{
- int c = string[i];
- if ((!in_quotes) && (PRINT_LITERAL_FORM (c)))
+ if ((!in_quotes) && (PRINT_LITERAL_FORM (current_char)))
{
- if (inspect_it)
- fputs_filtered ("\\'", stream);
- else
- fputs_filtered ("'", stream);
+ fputs_filtered ("'", stream);
in_quotes = 1;
}
- pascal_one_char (c, stream, &in_quotes);
+ pascal_one_char (current_char, stream, &in_quotes);
++things_printed;
}
}
/* Terminate the quotes if necessary. */
if (in_quotes)
- {
- if (inspect_it)
- fputs_filtered ("\\'", stream);
- else
- fputs_filtered ("'", stream);
- }
+ fputs_filtered ("'", stream);
if (force_ellipses || i < length)
fputs_filtered ("...", stream);
}
-
-/* Create a fundamental Pascal type using default reasonable for the current
- target machine.
-
- Some object/debugging file formats (DWARF version 1, COFF, etc) do not
- define fundamental types such as "int" or "double". Others (stabs or
- DWARF version 2, etc) do define fundamental types. For the formats which
- don't provide fundamental types, gdb can create such types using this
- function.
-
- FIXME: Some compilers distinguish explicitly signed integral types
- (signed short, signed int, signed long) from "regular" integral types
- (short, int, long) in the debugging information. There is some dis-
- agreement as to how useful this feature is. In particular, gcc does
- not support this. Also, only some debugging formats allow the
- distinction to be passed on to a debugger. For now, we always just
- use "short", "int", or "long" as the type name, for both the implicit
- and explicitly signed types. This also makes life easier for the
- gdb test suite since we don't have to account for the differences
- in output depending upon what the compiler and debugging format
- support. We will probably have to re-examine the issue when gdb
- starts taking it's fundamental type information directly from the
- debugging information supplied by the compiler. fnf@cygnus.com */
-
-/* Note there might be some discussion about the choosen correspondance
- because it mainly reflects Free Pascal Compiler setup for now PM */
-
-
-struct type *
-pascal_create_fundamental_type (struct objfile *objfile, int typeid)
-{
- register struct type *type = NULL;
-
- switch (typeid)
- {
- default:
- /* FIXME: For now, if we are asked to produce a type not in this
- language, create the equivalent of a C integer type with the
- name "<?type?>". When all the dust settles from the type
- reconstruction work, this should probably become an error. */
- type = init_type (TYPE_CODE_INT,
- TARGET_INT_BIT / TARGET_CHAR_BIT,
- 0, "<?type?>", objfile);
- warning ("internal error: no Pascal fundamental type %d", typeid);
- break;
- case FT_VOID:
- type = init_type (TYPE_CODE_VOID,
- TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- 0, "void", objfile);
- break;
- case FT_CHAR:
- type = init_type (TYPE_CODE_INT,
- TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- 0, "char", objfile);
- break;
- case FT_SIGNED_CHAR:
- type = init_type (TYPE_CODE_INT,
- TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- 0, "shortint", objfile);
- break;
- case FT_UNSIGNED_CHAR:
- type = init_type (TYPE_CODE_INT,
- TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "byte", objfile);
- break;
- case FT_SHORT:
- type = init_type (TYPE_CODE_INT,
- TARGET_SHORT_BIT / TARGET_CHAR_BIT,
- 0, "integer", objfile);
- break;
- case FT_SIGNED_SHORT:
- type = init_type (TYPE_CODE_INT,
- TARGET_SHORT_BIT / TARGET_CHAR_BIT,
- 0, "integer", objfile); /* FIXME-fnf */
- break;
- case FT_UNSIGNED_SHORT:
- type = init_type (TYPE_CODE_INT,
- TARGET_SHORT_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "word", objfile);
- break;
- case FT_INTEGER:
- type = init_type (TYPE_CODE_INT,
- TARGET_INT_BIT / TARGET_CHAR_BIT,
- 0, "longint", objfile);
- break;
- case FT_SIGNED_INTEGER:
- type = init_type (TYPE_CODE_INT,
- TARGET_INT_BIT / TARGET_CHAR_BIT,
- 0, "longint", objfile); /* FIXME -fnf */
- break;
- case FT_UNSIGNED_INTEGER:
- type = init_type (TYPE_CODE_INT,
- TARGET_INT_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "cardinal", objfile);
- break;
- case FT_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_BIT / TARGET_CHAR_BIT,
- 0, "long", objfile);
- break;
- case FT_SIGNED_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_BIT / TARGET_CHAR_BIT,
- 0, "long", objfile); /* FIXME -fnf */
- break;
- case FT_UNSIGNED_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
- break;
- case FT_LONG_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
- 0, "long long", objfile);
- break;
- case FT_SIGNED_LONG_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
- 0, "signed long long", objfile);
- break;
- case FT_UNSIGNED_LONG_LONG:
- type = init_type (TYPE_CODE_INT,
- TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
- break;
- case FT_FLOAT:
- type = init_type (TYPE_CODE_FLT,
- TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
- 0, "float", objfile);
- break;
- case FT_DBL_PREC_FLOAT:
- type = init_type (TYPE_CODE_FLT,
- TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
- 0, "double", objfile);
- break;
- case FT_EXT_PREC_FLOAT:
- type = init_type (TYPE_CODE_FLT,
- TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
- 0, "extended", objfile);
- break;
- }
- return (type);
-}
\f
/* Table mapping opcodes into strings for printing operators
{"^", UNOP_IND, PREC_SUFFIX, 1},
{"@", UNOP_ADDR, PREC_PREFIX, 0},
{"sizeof", UNOP_SIZEOF, PREC_PREFIX, 0},
- {NULL, 0, 0, 0}
+ {NULL, OP_NULL, PREC_PREFIX, 0}
};
\f
-struct type **const /* CONST_PTR v 4.17 */ (pascal_builtin_types[]) =
+enum pascal_primitive_types {
+ pascal_primitive_type_int,
+ pascal_primitive_type_long,
+ pascal_primitive_type_short,
+ pascal_primitive_type_char,
+ pascal_primitive_type_float,
+ pascal_primitive_type_double,
+ pascal_primitive_type_void,
+ pascal_primitive_type_long_long,
+ pascal_primitive_type_signed_char,
+ pascal_primitive_type_unsigned_char,
+ pascal_primitive_type_unsigned_short,
+ pascal_primitive_type_unsigned_int,
+ pascal_primitive_type_unsigned_long,
+ pascal_primitive_type_unsigned_long_long,
+ pascal_primitive_type_long_double,
+ pascal_primitive_type_complex,
+ pascal_primitive_type_double_complex,
+ nr_pascal_primitive_types
+};
+
+static void
+pascal_language_arch_info (struct gdbarch *gdbarch,
+ struct language_arch_info *lai)
+{
+ const struct builtin_type *builtin = builtin_type (gdbarch);
+
+ lai->string_char_type = builtin->builtin_char;
+ lai->primitive_type_vector
+ = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_pascal_primitive_types + 1,
+ struct type *);
+ lai->primitive_type_vector [pascal_primitive_type_int]
+ = builtin->builtin_int;
+ lai->primitive_type_vector [pascal_primitive_type_long]
+ = builtin->builtin_long;
+ lai->primitive_type_vector [pascal_primitive_type_short]
+ = builtin->builtin_short;
+ lai->primitive_type_vector [pascal_primitive_type_char]
+ = builtin->builtin_char;
+ lai->primitive_type_vector [pascal_primitive_type_float]
+ = builtin->builtin_float;
+ lai->primitive_type_vector [pascal_primitive_type_double]
+ = builtin->builtin_double;
+ lai->primitive_type_vector [pascal_primitive_type_void]
+ = builtin->builtin_void;
+ lai->primitive_type_vector [pascal_primitive_type_long_long]
+ = builtin->builtin_long_long;
+ lai->primitive_type_vector [pascal_primitive_type_signed_char]
+ = builtin->builtin_signed_char;
+ lai->primitive_type_vector [pascal_primitive_type_unsigned_char]
+ = builtin->builtin_unsigned_char;
+ lai->primitive_type_vector [pascal_primitive_type_unsigned_short]
+ = builtin->builtin_unsigned_short;
+ lai->primitive_type_vector [pascal_primitive_type_unsigned_int]
+ = builtin->builtin_unsigned_int;
+ lai->primitive_type_vector [pascal_primitive_type_unsigned_long]
+ = builtin->builtin_unsigned_long;
+ lai->primitive_type_vector [pascal_primitive_type_unsigned_long_long]
+ = builtin->builtin_unsigned_long_long;
+ lai->primitive_type_vector [pascal_primitive_type_long_double]
+ = builtin->builtin_long_double;
+ lai->primitive_type_vector [pascal_primitive_type_complex]
+ = builtin->builtin_complex;
+ lai->primitive_type_vector [pascal_primitive_type_double_complex]
+ = builtin->builtin_double_complex;
+
+ lai->bool_type_symbol = "boolean";
+ lai->bool_type_default = builtin->builtin_bool;
+}
+
+static const char *p_extensions[] =
{
- &builtin_type_int,
- &builtin_type_long,
- &builtin_type_short,
- &builtin_type_char,
- &builtin_type_float,
- &builtin_type_double,
- &builtin_type_void,
- &builtin_type_long_long,
- &builtin_type_signed_char,
- &builtin_type_unsigned_char,
- &builtin_type_unsigned_short,
- &builtin_type_unsigned_int,
- &builtin_type_unsigned_long,
- &builtin_type_unsigned_long_long,
- &builtin_type_long_double,
- &builtin_type_complex,
- &builtin_type_double_complex,
- 0
+ ".pas", ".p", ".pp", NULL
};
-const struct language_defn pascal_language_defn =
+extern const struct language_defn pascal_language_defn =
{
"pascal", /* Language name */
+ "Pascal",
language_pascal,
- pascal_builtin_types,
range_check_on,
- type_check_on,
case_sensitive_on,
+ array_row_major,
+ macro_expansion_no,
+ p_extensions,
+ &exp_descriptor_standard,
pascal_parse,
- pascal_error,
- evaluate_subexp_standard,
+ null_post_parser,
pascal_printchar, /* Print a character constant */
pascal_printstr, /* Function to print string constant */
pascal_emit_char, /* Print a single char */
- pascal_create_fundamental_type, /* Create fundamental type in this language */
pascal_print_type, /* Print a type using appropriate syntax */
+ pascal_print_typedef, /* Print a typedef using appropriate syntax */
pascal_val_print, /* Print a value using appropriate syntax */
pascal_value_print, /* Print a top-level value */
- {"", "%", "b", ""}, /* Binary format info */
- {"0%lo", "0", "o", ""}, /* Octal format info */
- {"%ld", "", "d", ""}, /* Decimal format info */
- {"$%lx", "$", "x", ""}, /* Hex format info */
+ default_read_var_value, /* la_read_var_value */
+ NULL, /* Language specific skip_trampoline */
+ "this", /* name_of_this */
+ false, /* la_store_sym_names_in_linkage_form_p */
+ basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
+ basic_lookup_transparent_type,/* lookup_transparent_type */
+ NULL, /* Language specific symbol demangler */
+ NULL,
+ NULL, /* Language specific class_name_from_physname */
pascal_op_print_tab, /* expression operators for printing */
1, /* c-style arrays */
0, /* String lower bound */
- &builtin_type_char, /* Type of string elements */
- LANG_MAGIC
+ default_word_break_characters,
+ default_collect_symbol_completion_matches,
+ pascal_language_arch_info,
+ default_print_array_index,
+ default_pass_by_reference,
+ default_get_string,
+ c_watch_location_expression,
+ NULL, /* la_compare_symbol_for_completion */
+ iterate_over_symbols,
+ default_search_name_hash,
+ &default_varobj_ops,
+ NULL,
+ NULL,
+ pascal_is_string_type_p,
+ "{...}" /* la_struct_too_deep_ellipsis */
};
-
-void
-_initialize_pascal_language (void)
-{
- add_language (&pascal_language_defn);
-}
projects / thirdparty / binutils-gdb.git / blobdiff