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-rw-r--r--gdb/scm-lang.c274
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);
-}
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