import gdb-2000-02-02 snapshot

1 files changed, 165 insertions, 0 deletions

diff --git a/gdb/wrapper.c b/gdb/wrapper.c
new file mode 100644
index 0000000000..be7d4e2739
--- /dev/null
+++ b/gdb/wrapper.c
@@ -0,0 +1,165 @@
+/* Longjump free calls to gdb internal routines.
+   Copyright 1999 Free Software Foundation, Inc.
+
+   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 "value.h"
+#include "frame.h"
+#include "wrapper.h"
+
+/* Use this struct used to pass arguments to wrapper routines. We assume
+   (arbitrarily) that no gdb function takes more than ten arguments. */
+struct gdb_wrapper_arguments
+  {
+
+    /* Pointer to some result from the gdb function call, if any */
+    char *result;
+
+    /* The list of arguments. */
+    char *args[10];
+  };
+
+int gdb_evaluate_expression PARAMS ((struct expression *, value_ptr *));
+int wrap_evaluate_expression PARAMS ((char *));
+
+int gdb_value_fetch_lazy PARAMS ((value_ptr));
+int wrap_value_fetch_lazy PARAMS ((char *));
+
+int gdb_value_equal PARAMS ((value_ptr, value_ptr, int *));
+int wrap_value_equal PARAMS ((char *));
+
+int gdb_value_ind PARAMS ((value_ptr val, value_ptr * rval));
+int wrap_value_ind PARAMS ((char *opaque_arg));
+
+int
+gdb_evaluate_expression (exp, value)
+     struct expression *exp;
+     value_ptr *value;
+{
+  struct gdb_wrapper_arguments args;
+  args.args[0] = (char *) exp;
+
+  if (!catch_errors ((catch_errors_ftype *) wrap_evaluate_expression, &args,
+		     "", RETURN_MASK_ERROR))
+    {
+      /* An error occurred */
+      return 0;
+    }
+
+  *value = (value_ptr) args.result;
+  return 1;
+}
+
+int
+wrap_evaluate_expression (a)
+     char *a;
+{
+  struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a;
+
+  (args)->result =
+    (char *) evaluate_expression ((struct expression *) (args)->args[0]);
+  return 1;
+}
+
+int
+gdb_value_fetch_lazy (value)
+     value_ptr value;
+{
+  struct gdb_wrapper_arguments args;
+
+  args.args[0] = (char *) value;
+  return catch_errors ((catch_errors_ftype *) wrap_value_fetch_lazy, &args,
+		       "", RETURN_MASK_ERROR);
+}
+
+int
+wrap_value_fetch_lazy (a)
+     char *a;
+{
+  struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a;
+
+  value_fetch_lazy ((value_ptr) (args)->args[0]);
+  return 1;
+}
+
+int
+gdb_value_equal (val1, val2, result)
+     value_ptr val1;
+     value_ptr val2;
+     int *result;
+{
+  struct gdb_wrapper_arguments args;
+
+  args.args[0] = (char *) val1;
+  args.args[1] = (char *) val2;
+
+  if (!catch_errors ((catch_errors_ftype *) wrap_value_equal, &args,
+		     "", RETURN_MASK_ERROR))
+    {
+      /* An error occurred */
+      return 0;
+    }
+
+  *result = (int) args.result;
+  return 1;
+}
+
+int
+wrap_value_equal (a)
+     char *a;
+{
+  struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) a;
+  value_ptr val1, val2;
+
+  val1 = (value_ptr) (args)->args[0];
+  val2 = (value_ptr) (args)->args[1];
+
+  (args)->result = (char *) value_equal (val1, val2);
+  return 1;
+}
+
+int
+gdb_value_ind (val, rval)
+     value_ptr val;
+     value_ptr *rval;
+{
+  struct gdb_wrapper_arguments args;
+
+  args.args[0] = (char *) val;
+
+  if (!catch_errors ((catch_errors_ftype *) wrap_value_ind, &args,
+		     "", RETURN_MASK_ERROR))
+    {
+      /* An error occurred */
+      return 0;
+    }
+
+  *rval = (value_ptr) args.result;
+  return 1;
+}
+
+int
+wrap_value_ind (opaque_arg)
+     char *opaque_arg;
+{
+  struct gdb_wrapper_arguments *args = (struct gdb_wrapper_arguments *) opaque_arg;
+  value_ptr val;
+
+  val = (value_ptr) (args)->args[0];
+  (args)->result = (char *) value_ind (val);
+  return 1;
+}