Initial creation of sourceware repository

1 files changed, 0 insertions, 274 deletions

diff --git a/gdb/scm-lang.c b/gdb/scm-lang.c
deleted file mode 100644
index 7f31ba4..0000000
--- a/gdb/scm-lang.c
+++ /dev/null
@@ -1,274 +0,0 @@
-/* Scheme/Guile language support routines for GDB, the GNU debugger.
-   Copyright 1995 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.  */
-
-#include "defs.h"
-#include "symtab.h"
-#include "gdbtypes.h"
-#include "expression.h"
-#include "parser-defs.h"
-#include "language.h"
-#include "value.h"
-#include "c-lang.h"
-#include "scm-lang.h"
-#include "scm-tags.h"
-#include "gdb_string.h"
-#include "gdbcore.h"
-
-static value_ptr evaluate_subexp_scm PARAMS ((struct type *, struct expression *,
-					      int *, enum noside));
-static value_ptr scm_lookup_name PARAMS ((char *));
-static int in_eval_c PARAMS ((void));
-static void scm_printstr PARAMS ((GDB_FILE *stream, char *string, unsigned int length, int width, int force_ellipses));
-
-extern struct type ** CONST_PTR (c_builtin_types[]);
-
-struct type *builtin_type_scm;
-
-void
-scm_printchar (c, stream)
-     int c;
-     GDB_FILE *stream;
-{
-  fprintf_filtered (stream, "#\\%c", c);
-}
-
-static void
-scm_printstr (stream, string, length, width, force_ellipses)
-     GDB_FILE *stream;
-     char *string;
-     unsigned int length;
-     int width;
-     int force_ellipses;
-{
-  fprintf_filtered (stream, "\"%s\"", string);
-}
-
-int
-is_scmvalue_type (type)
-     struct type *type;
-{
-  if (TYPE_CODE (type) == TYPE_CODE_INT
-      && TYPE_NAME (type) && strcmp (TYPE_NAME (type), "SCM") == 0)
-    {
-      return 1;
-    }
-  return 0;
-}
-
-/* Get the INDEX'th SCM value, assuming SVALUE is the address
-   of the 0'th one.  */
-
-LONGEST
-scm_get_field (svalue, index)
-     LONGEST svalue;
-     int index;
-{
-  char buffer[20];
-  read_memory (SCM2PTR (svalue) + index * TYPE_LENGTH (builtin_type_scm),
-	       buffer, TYPE_LENGTH (builtin_type_scm));
-  return extract_signed_integer (buffer, TYPE_LENGTH (builtin_type_scm));
-}
-
-/* Unpack a value of type TYPE in buffer VALADDR as an integer
-   (if CONTEXT == TYPE_CODE_IN), a pointer (CONTEXT == TYPE_CODE_PTR),
-   or Boolean (CONTEXT == TYPE_CODE_BOOL).  */
-
-LONGEST
-scm_unpack (type, valaddr, context)
-     struct type *type;
-     char *valaddr;
-     enum type_code context;
-{
-  if (is_scmvalue_type (type))
-    {
-      LONGEST svalue = extract_signed_integer (valaddr, TYPE_LENGTH (type));
-      if (context == TYPE_CODE_BOOL)
-	{
-	  if (svalue == SCM_BOOL_F)
-	    return 0;
-	  else
-	    return 1;
-	}
-      switch (7 & (int) svalue)
-	{
-	case 2:  case 6: /* fixnum */
-	  return svalue >> 2;
-	case 4: /* other immediate value */
-	  if (SCM_ICHRP (svalue)) /* character */
-	    return SCM_ICHR (svalue);
-	  else if (SCM_IFLAGP (svalue))
-	    {
-	      switch ((int) svalue)
-		{
-#ifndef SICP
-		case SCM_EOL:
-#endif
-		case SCM_BOOL_F:
-		  return 0;
-		case SCM_BOOL_T:
-		  return 1;
-		}
-	    }
-	  error ("Value can't be converted to integer.");
-	default:
-	  return svalue;
-	}
-    }
-  else
-    return unpack_long (type, valaddr);
-}
-
-/* True if we're correctly in Guile's eval.c (the evaluator and apply). */
-
-static int
-in_eval_c ()
-{
-  if (current_source_symtab && current_source_symtab->filename)
-    {
-      char *filename = current_source_symtab->filename;
-      int len = strlen (filename);
-      if (len >= 6 && strcmp (filename + len - 6, "eval.c") == 0)
-	return 1;
-    }
-  return 0;
-}
-
-/* Lookup a value for the variable named STR.
-   First lookup in Scheme context (using the scm_lookup_cstr inferior
-   function), then try lookup_symbol for compiled variables. */
-
-static value_ptr
-scm_lookup_name (str)
-     char *str;
-{
-  value_ptr args[3];
-  int len = strlen (str);
-  value_ptr func, val;
-  struct symbol *sym;
-  args[0] = value_allocate_space_in_inferior (len);
-  args[1] = value_from_longest (builtin_type_int, len);
-  write_memory (value_as_long (args[0]), str, len);
-
-  if (in_eval_c ()
-      && (sym = lookup_symbol ("env",
-			       expression_context_block,
-			       VAR_NAMESPACE, (int *) NULL,
-			       (struct symtab **) NULL)) != NULL)
-    args[2] = value_of_variable (sym, expression_context_block);
-  else
-    /* FIXME in this case, we should try lookup_symbol first */
-    args[2] = value_from_longest (builtin_type_scm, SCM_EOL);
-
-  func = find_function_in_inferior ("scm_lookup_cstr");
-  val = call_function_by_hand (func, 3, args);
-  if (!value_logical_not (val))
-    return value_ind (val);
-
-  sym = lookup_symbol (str,
-		       expression_context_block,
-		       VAR_NAMESPACE, (int *) NULL,
-		       (struct symtab **) NULL);
-  if (sym)
-    return value_of_variable (sym, NULL);
-  error ("No symbol \"%s\" in current context.");
-}
-
-value_ptr
-scm_evaluate_string (str, len)
-     char *str; int len;
-{
-  value_ptr func;
-  value_ptr addr = value_allocate_space_in_inferior (len + 1);
-  LONGEST iaddr = value_as_long (addr);
-  write_memory (iaddr, str, len);
-  /* FIXME - should find and pass env */
-  write_memory (iaddr + len, "", 1);
-  func = find_function_in_inferior ("scm_evstr");
-  return call_function_by_hand (func, 1, &addr);
-}
-
-static value_ptr
-evaluate_subexp_scm (expect_type, exp, pos, noside)
-     struct type *expect_type;
-     register struct expression *exp;
-     register int *pos;
-     enum noside noside;
-{
-  enum exp_opcode op = exp->elts[*pos].opcode;
-  int len, pc;  char *str;
-  switch (op)
-    {
-    case OP_NAME:
-      pc = (*pos)++;
-      len = longest_to_int (exp->elts[pc + 1].longconst);
-      (*pos) += 3 + BYTES_TO_EXP_ELEM (len + 1);
-      if (noside == EVAL_SKIP)
-	goto nosideret;
-      str = &exp->elts[pc + 2].string;
-      return scm_lookup_name (str);
-    case OP_EXPRSTRING:
-      pc = (*pos)++;
-      len = longest_to_int (exp->elts[pc + 1].longconst);
-      (*pos) += 3 + BYTES_TO_EXP_ELEM (len + 1);
-      if (noside == EVAL_SKIP)
-	goto nosideret;
-      str = &exp->elts[pc + 2].string;
-      return scm_evaluate_string (str, len);
-    default: ;
-    }
-  return evaluate_subexp_standard (expect_type, exp, pos, noside);
- nosideret:
-  return value_from_longest (builtin_type_long, (LONGEST) 1);
-}
-
-const struct language_defn scm_language_defn = {
-  "scheme",			/* Language name */
-  language_scm,
-  c_builtin_types,
-  range_check_off,
-  type_check_off,
-  scm_parse,
-  c_error,
-  evaluate_subexp_scm,
-  scm_printchar,		/* Print a character constant */
-  scm_printstr,			/* Function to print string constant */
-  NULL,				/* Function to print a single character */
-  NULL,				/* Create fundamental type in this language */
-  c_print_type,			/* Print a type using appropriate syntax */
-  scm_val_print,		/* Print a value using appropriate syntax */
-  scm_value_print,		/* Print a top-level value */
-  {"",     "",    "",  ""},	/* Binary format info */
-  {"#o%lo",  "#o",   "o", ""},	/* Octal format info */
-  {"%ld",   "",    "d", ""},	/* Decimal format info */
-  {"#x%lX", "#X",  "X", ""},	/* Hex format info */
-  NULL,				/* expression operators for printing */
-  1,				/* c-style arrays */
-  0,				/* String lower bound */
-  &builtin_type_char,		/* Type of string elements */ 
-  LANG_MAGIC
-};
-
-void
-_initialize_scheme_language ()
-{
-  add_language (&scm_language_defn);
-  builtin_type_scm = init_type (TYPE_CODE_INT,
-				TARGET_LONG_BIT / TARGET_CHAR_BIT,
-				0, "SCM", (struct objfile *) NULL);
-}