2008-11-18 Paul Pluzhnikov <ppluzhnikov@google.com>

[deliverable/binutils-gdb.git] / gdb / p-lang.c

diff --git a/gdb/p-lang.c b/gdb/p-lang.c
index f7c49df7d775b6fe6bb7dadf12a0fb734b461395..cd4285d2a06dc575f7f51e056c8b7efd51ef9312 100644 (file)
--- a/gdb/p-lang.c
+++ b/gdb/p-lang.c
@@ -1,11 +1,13 @@
 /* Pascal language support routines for GDB, the GNU debugger.
 /* Pascal language support routines for GDB, the GNU debugger.

-   Copyright 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
+
+   Copyright (C) 2000, 2002, 2003, 2004, 2005, 2007, 2008
+   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
 
    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,
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,


@@ -14,8 +16,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    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 c-lang.c */
 
 
 /* This file is derived from c-lang.c */
 


@@ -34,6 +35,56 @@
 extern void _initialize_pascal_language (void);
 
 
 extern void _initialize_pascal_language (void);
 
 

+/* 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 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 == NULL)
+    return NULL;
+
+  msym = lookup_minimal_symbol (GPC_MAIN_PROGRAM_NAME_1, NULL, NULL);
+  if (msym != NULL)
+    {
+      return GPC_MAIN_PROGRAM_NAME_1;
+    }
+
+  msym = lookup_minimal_symbol (GPC_MAIN_PROGRAM_NAME_2, NULL, NULL);
+  if (msym != 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 1 if the type is a known pascal type
    This function is used by p-valprint.c code to allow better string display.
 /* Determines if type TYPE is a pascal string type.
    Returns 1 if the type is a known pascal type
    This function is used by p-valprint.c code to allow better string display.


@@ -155,8 +206,9 @@ pascal_printchar (int c, struct ui_file *stream)
    had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.  */
 
 void
    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, const gdb_byte *string,
+                unsigned int length, int width, int force_ellipses,
+                const struct value_print_options *options)

 {
   unsigned int i;
   unsigned int things_printed = 0;
 {
   unsigned int i;
   unsigned int things_printed = 0;


@@ -175,7 +227,7 @@ pascal_printstr (struct ui_file *stream, char *string, unsigned int length,
       return;
     }
 
       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.  */
     {
       /* Position of the character we are examining
          to see whether it is repeated.  */


@@ -199,11 +251,11 @@ pascal_printstr (struct ui_file *stream, char *string, unsigned int length,
          ++reps;
        }
 
          ++reps;
        }
 

-      if (reps > repeat_count_threshold)
+      if (reps > options->repeat_count_threshold)

        {
          if (in_quotes)
            {
        {
          if (in_quotes)
            {

-             if (inspect_it)
+             if (options->inspect_it)

                fputs_filtered ("\\', ", stream);
              else
                fputs_filtered ("', ", stream);
                fputs_filtered ("\\', ", stream);
              else
                fputs_filtered ("', ", stream);


@@ -212,7 +264,7 @@ pascal_printstr (struct ui_file *stream, char *string, unsigned int length,
          pascal_printchar (string[i], stream);
          fprintf_filtered (stream, " <repeats %u times>", reps);
          i = rep1 - 1;
          pascal_printchar (string[i], 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
          need_comma = 1;
        }
       else


@@ -220,7 +272,7 @@ pascal_printstr (struct ui_file *stream, char *string, unsigned int length,
          int c = string[i];
          if ((!in_quotes) && (PRINT_LITERAL_FORM (c)))
            {
          int c = string[i];
          if ((!in_quotes) && (PRINT_LITERAL_FORM (c)))
            {

-             if (inspect_it)
+             if (options->inspect_it)

                fputs_filtered ("\\'", stream);
              else
                fputs_filtered ("'", stream);
                fputs_filtered ("\\'", stream);
              else
                fputs_filtered ("'", stream);


@@ -234,7 +286,7 @@ pascal_printstr (struct ui_file *stream, char *string, unsigned int length,
   /* Terminate the quotes if necessary.  */
   if (in_quotes)
     {
   /* Terminate the quotes if necessary.  */
   if (in_quotes)
     {

-      if (inspect_it)
+      if (options->inspect_it)

        fputs_filtered ("\\'", stream);
       else
        fputs_filtered ("'", stream);
        fputs_filtered ("\\'", stream);
       else
        fputs_filtered ("'", stream);


@@ -243,149 +295,6 @@ pascal_printstr (struct ui_file *stream, char *string, unsigned int length,
   if (force_ellipses || i < length)
     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)
-{
-  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_CHAR,
-                       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
 \f
 
 /* Table mapping opcodes into strings for printing operators


@@ -421,37 +330,84 @@ const struct op_print pascal_op_print_tab[] =
   {NULL, 0, 0, 0}
 };
 \f
   {NULL, 0, 0, 0}
 };
 \f

-struct type **const (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
+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;
+}
+

 const struct language_defn pascal_language_defn =
 {
   "pascal",                    /* Language name */
   language_pascal,
 const struct language_defn pascal_language_defn =
 {
   "pascal",                    /* Language name */
   language_pascal,

-  pascal_builtin_types,

   range_check_on,
   type_check_on,
   case_sensitive_on,
   array_row_major,
   range_check_on,
   type_check_on,
   case_sensitive_on,
   array_row_major,

+  macro_expansion_no,

   &exp_descriptor_standard,
   pascal_parse,
   pascal_error,
   &exp_descriptor_standard,
   pascal_parse,
   pascal_error,


@@ -459,12 +415,12 @@ const struct language_defn pascal_language_defn =
   pascal_printchar,            /* Print a character constant */
   pascal_printstr,             /* Function to print string constant */
   pascal_emit_char,            /* Print a single char */
   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_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 */
   NULL,                                /* Language specific skip_trampoline */
   pascal_val_print,            /* Print a value using appropriate syntax */
   pascal_value_print,          /* Print a top-level value */
   NULL,                                /* Language specific skip_trampoline */

-  value_of_this,               /* value_of_this */
+  "this",                      /* name_of_this */

   basic_lookup_symbol_nonlocal,        /* lookup_symbol_nonlocal */
   basic_lookup_transparent_type,/* lookup_transparent_type */
   NULL,                                /* Language specific symbol demangler */
   basic_lookup_symbol_nonlocal,        /* lookup_symbol_nonlocal */
   basic_lookup_transparent_type,/* lookup_transparent_type */
   NULL,                                /* Language specific symbol demangler */


@@ -472,9 +428,11 @@ const struct language_defn pascal_language_defn =
   pascal_op_print_tab,         /* expression operators for printing */
   1,                           /* c-style arrays */
   0,                           /* String lower bound */
   pascal_op_print_tab,         /* expression operators for printing */
   1,                           /* c-style arrays */
   0,                           /* String lower bound */

-  &builtin_type_char,          /* Type of string elements */

   default_word_break_characters,
   default_word_break_characters,

-  NULL, /* FIXME: la_language_arch_info.  */
+  default_make_symbol_completion_list,
+  pascal_language_arch_info,
+  default_print_array_index,
+  default_pass_by_reference,

   LANG_MAGIC
 };
 
   LANG_MAGIC
 };