1 files changed, 155 insertions, 0 deletions
diff --git a/sim/igen/table.h b/sim/igen/table.h
new file mode 100644
index 00000000000..e0bc81bf38e
--- /dev/null
+++ b/sim/igen/table.h
@@ -0,0 +1,155 @@
+/*  This file is part of the program psim.
+
+    Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
+
+    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.
+ 
+    */
+
+
+/* Read a table, line by line, from a file.
+
+   A table line has several forms:
+
+   Field line:
+
+       <text> { ":" <text> }
+       type == table_colon_entry
+
+       Fields points to a NULL terminated list of pointers.
+
+   Tab indented block:
+
+     <tab> <text> <nl> { <tab> <text> <nl> }
+     type == table_code_entry
+
+     The leading tab at the start of each line is discarded.
+     fields[i] is the i'th line with the <nl> discarded.
+     
+
+   Code block:
+
+     "{" <ignore-text> <nl> { <text> <nl> } "}" <ignore-text> <nl>
+     type == table_code_entry
+
+     The leading/trailing {/} lines are discarded.
+     Lines containing two leading spaces have those spaces striped.
+     fields[i] is the i'th line with the <nl> discarded.
+
+   In addition, the table parser reconises and handles internally the
+   following (when not in a code block):
+
+     "#" <line-nr> '"' <file> '"'
+
+     As per CPP/CC, treat following lines as if they were taken from
+     <file> starting at <line-nr>
+
+   No support for CPP's "#if/#else/#endif" style conditions are
+   planned. */
+
+typedef struct _table table;
+
+typedef enum {
+  table_colon_entry,
+  table_code_entry,
+} table_entry_type;
+
+
+typedef struct _table_entry table_entry;
+struct _table_entry {
+  table *file;
+  line_ref *line;
+  table_entry_type type;
+  int nr_fields;
+  char **field;
+};
+
+/* List of directories to search when opening a pushed file.  Current
+   directory is always searched first */
+typedef struct _table_include table_include;
+struct _table_include {
+  char *dir;
+  table_include *next;
+};
+
+
+/* Open/read a table file.  Since the file is read once during open
+   (and then closed immediatly) there is no close method. */
+
+extern table *table_open
+(const char *file_name);
+
+extern table_entry *table_read
+(table *file);
+
+
+/* Push the the state of the current file and open FILE_NAME.  When
+   the end of FILE_NAME is reached, return to the pushed file */
+
+extern void table_push
+(table *file,
+ line_ref *line,
+ table_include *search,
+ const char *file_name);
+
+
+/* Expand the specified field_nr using the internal expansion table.
+   A field is only expanded when explicitly specified.  */
+
+extern void table_expand_field
+(table_entry *entry,
+ int field_nr);
+
+
+/* Given a code entry, write the code to FILE.  Since any
+   leading/trailing braces were striped as part of the read, they are
+   not written. */
+
+extern void table_print_code
+(lf *file,
+ table_entry *entry);
+
+
+/* Debugging */
+
+extern void dump_line_ref
+(lf *file,
+ char *prefix,
+ const line_ref *line,
+ char *suffix);
+
+extern void dump_table_entry
+(lf *file,
+ char *prefix,
+ const table_entry *entry,
+ char *suffix);
+
+
+
+/* Utilities for skipping around text */
+
+extern char *skip_digits
+(char *chp);
+
+extern char *skip_spaces
+(char *chp);
+
+extern char *skip_to_separator
+(char *chp,
+ char *separators);
+
+extern char *back_spaces
+(char *start,
+ char *chp);