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authorPierre Muller <muller@sourceware.org>2000-06-14 12:27:59 +0000
committerPierre Muller <muller@sourceware.org>2000-06-14 12:27:59 +0000
commit373a8247302053107af695e14b869988b3395f79 (patch)
treec91e9c673f569c9634cfaa9c64ee7a7d2d569e78 /gdb/p-lang.c
parentc06ae4f232e6e2b3d3062ffc5bce2b4477cb388a (diff)
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2000-06-14 Pierre Muller <muller@ics.u-strasbg.fr>
Add support for Pascal language. Part 1: new files. * p-exp.y, p-lang.c, p-lang.h, p-typeprint.c, p-valprint.c: New files.
Diffstat (limited to 'gdb/p-lang.c')
-rw-r--r--gdb/p-lang.c430
1 files changed, 430 insertions, 0 deletions
diff --git a/gdb/p-lang.c b/gdb/p-lang.c
new file mode 100644
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--- /dev/null
+++ b/gdb/p-lang.c
@@ -0,0 +1,430 @@
+/* Pascal language support routines for GDB, the GNU debugger.
+ Copyright 2000 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
+ (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 is derived from p-lang.c */
+
+#include "defs.h"
+#include "symtab.h"
+#include "gdbtypes.h"
+#include "expression.h"
+#include "parser-defs.h"
+#include "language.h"
+#include "p-lang.h"
+#include "valprint.h"
+
+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 */
+
+static void
+pascal_one_char (c, stream, in_quotes)
+ register int c;
+ struct ui_file *stream;
+ int *in_quotes;
+{
+
+ c &= 0xFF; /* Avoid sign bit follies */
+
+ if ((c == '\'') || (PRINT_LITERAL_FORM (c)))
+ {
+ if (!(*in_quotes))
+ fputs_filtered ("'", stream);
+ *in_quotes = 1;
+ if (c == '\'')
+ {
+ fputs_filtered ("''", stream);
+ }
+ else
+ fprintf_filtered (stream, "%c", c);
+ }
+ else
+ {
+ if (*in_quotes)
+ fputs_filtered ("'", stream);
+ *in_quotes = 0;
+ fprintf_filtered (stream, "#%d", (unsigned int) c);
+ }
+}
+
+static void pascal_emit_char (int c, 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. */
+
+static void
+pascal_emit_char (c, stream, quoter)
+ register int c;
+ 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 (c, stream)
+ int c;
+ struct ui_file *stream;
+{
+ int in_quotes = 0;
+ pascal_one_char (c, stream, &in_quotes);
+ if (in_quotes)
+ fputs_filtered ("'", stream);
+}
+
+/* Print the character string STRING, printing at most LENGTH characters.
+ Printing stops early if the number hits print_max; repeat counts
+ are printed as appropriate. Print ellipses at the end if we
+ had to stop before printing LENGTH characters, or if FORCE_ELLIPSES. */
+
+void
+pascal_printstr (stream, string, length, width, force_ellipses)
+ struct ui_file *stream;
+ char *string;
+ unsigned int length;
+ int width;
+ int force_ellipses;
+{
+ register unsigned int i;
+ unsigned int things_printed = 0;
+ int in_quotes = 0;
+ int need_comma = 0;
+ extern int inspect_it;
+
+ /* 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')
+ length--;
+
+ if (length == 0)
+ {
+ fputs_filtered ("''", stream);
+ return;
+ }
+
+ for (i = 0; i < length && things_printed < 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;
+
+ QUIT;
+
+ if (need_comma)
+ {
+ fputs_filtered (", ", stream);
+ need_comma = 0;
+ }
+
+ rep1 = i + 1;
+ reps = 1;
+ while (rep1 < length && string[rep1] == string[i])
+ {
+ ++rep1;
+ ++reps;
+ }
+
+ if (reps > repeat_count_threshold)
+ {
+ if (in_quotes)
+ {
+ if (inspect_it)
+ fputs_filtered ("\\', ", stream);
+ else
+ fputs_filtered ("', ", stream);
+ in_quotes = 0;
+ }
+ pascal_printchar (string[i], stream);
+ fprintf_filtered (stream, " <repeats %u times>", reps);
+ i = rep1 - 1;
+ things_printed += repeat_count_threshold;
+ need_comma = 1;
+ }
+ else
+ {
+ int c = string[i];
+ if ((!in_quotes) && (PRINT_LITERAL_FORM (c)))
+ {
+ if (inspect_it)
+ fputs_filtered ("\\'", stream);
+ else
+ fputs_filtered ("'", stream);
+ in_quotes = 1;
+ }
+ pascal_one_char (c, stream, &in_quotes);
+ ++things_printed;
+ }
+ }
+
+ /* Terminate the quotes if necessary. */
+ if (in_quotes)
+ {
+ if (inspect_it)
+ fputs_filtered ("\\'", stream);
+ else
+ 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 (objfile, typeid)
+ 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);
+}
+
+
+/* Table mapping opcodes into strings for printing operators
+ and precedences of the operators. */
+
+const struct op_print pascal_op_print_tab[] =
+{
+ {",", BINOP_COMMA, PREC_COMMA, 0},
+ {":=", BINOP_ASSIGN, PREC_ASSIGN, 1},
+ {"or", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
+ {"xor", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
+ {"and", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
+ {"=", BINOP_EQUAL, PREC_EQUAL, 0},
+ {"<>", BINOP_NOTEQUAL, PREC_EQUAL, 0},
+ {"<=", BINOP_LEQ, PREC_ORDER, 0},
+ {">=", BINOP_GEQ, PREC_ORDER, 0},
+ {">", BINOP_GTR, PREC_ORDER, 0},
+ {"<", BINOP_LESS, PREC_ORDER, 0},
+ {"shr", BINOP_RSH, PREC_SHIFT, 0},
+ {"shl", BINOP_LSH, PREC_SHIFT, 0},
+ {"+", BINOP_ADD, PREC_ADD, 0},
+ {"-", BINOP_SUB, PREC_ADD, 0},
+ {"*", BINOP_MUL, PREC_MUL, 0},
+ {"/", BINOP_DIV, PREC_MUL, 0},
+ {"div", BINOP_INTDIV, PREC_MUL, 0},
+ {"mod", BINOP_REM, PREC_MUL, 0},
+ {"@", BINOP_REPEAT, PREC_REPEAT, 0},
+ {"-", UNOP_NEG, PREC_PREFIX, 0},
+ {"not", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
+ {"^", UNOP_IND, PREC_SUFFIX, 1},
+ {"@", UNOP_ADDR, PREC_PREFIX, 0},
+ {"sizeof", UNOP_SIZEOF, PREC_PREFIX, 0},
+ {NULL, 0, 0, 0}
+};
+
+struct type **const /* CONST_PTR v 4.17 */ (pascal_builtin_types[]) =
+{
+ &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
+};
+
+const struct language_defn pascal_language_defn =
+{
+ "pascal", /* Language name */
+ language_pascal,
+ pascal_builtin_types,
+ range_check_on,
+ type_check_on,
+ pascal_parse,
+ pascal_error,
+ evaluate_subexp_standard,
+ 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_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 */
+ 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
+};
+
+void
+_initialize_pascal_language ()
+{
+ add_language (&pascal_language_defn);
+}