The remainder of igen taken from the PowerPC simulator directory.

1 files changed, 429 insertions, 0 deletions

diff --git a/sim/igen/lf.c b/sim/igen/lf.c
new file mode 100644
index 0000000..a15b47b
--- /dev/null
+++ b/sim/igen/lf.c
@@ -0,0 +1,429 @@
+/*  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.
+ 
+    */
+
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <ctype.h>
+
+#include "config.h"
+#include "misc.h"
+#include "lf.h"
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#endif
+
+struct _lf {
+  FILE *stream;
+  int line_nr; /* nr complete lines written, curr line is line_nr+1 */
+  int indent;
+  int line_blank;
+  const char *name;
+  const char *program;
+  lf_file_references references;
+  lf_file_type type;
+};
+
+
+lf *
+lf_open(char *name,
+	char *real_name,
+	lf_file_references references,
+	lf_file_type type,
+	const char *program)
+{
+  /* create a file object */
+  lf *new_lf = ZALLOC(lf);
+  ASSERT(new_lf != NULL);
+  new_lf->references = references;
+  new_lf->type = type;
+  new_lf->name = (real_name == NULL ? name : real_name);
+  new_lf->program = program;
+  /* attach to stdout if pipe */
+  if (!strcmp(name, "-")) {
+    new_lf->stream = stdout;
+  }
+  else {
+    /* create a new file */
+    new_lf->stream = fopen(name, "w");
+    if (new_lf->stream == NULL) {
+      perror(name);
+      exit(1);
+    }
+  }
+  return new_lf;
+}
+
+
+void
+lf_close(lf *file)
+{
+  if (file->stream != stdout) {
+    if (fclose(file->stream)) {
+      perror("lf_close.fclose");
+      exit(1);
+    }
+    free(file);
+  }
+}
+
+
+int
+lf_putchr(lf *file,
+	  const char chr)
+{
+  int nr = 0;
+  if (chr == '\n') {
+    file->line_nr += 1;
+    file->line_blank = 1;
+  }
+  else if (file->line_blank) {
+    int pad;
+    for (pad = file->indent; pad > 0; pad--)
+      putc(' ', file->stream);
+    nr += file->indent;
+    file->line_blank = 0;
+  }
+  putc(chr, file->stream);
+  nr += 1;
+  return nr;
+}
+
+void
+lf_indent_suppress(lf *file)
+{
+  file->line_blank = 0;
+}
+
+
+int
+lf_putstr(lf *file,
+	  const char *string)
+{
+  int nr = 0;
+  const char *chp;
+  if (string != NULL) {
+    for (chp = string; *chp != '\0'; chp++) {
+      nr += lf_putchr(file, *chp);
+    }
+  }
+  return nr;
+}
+
+static int
+do_lf_putunsigned(lf *file,
+	      unsigned u)
+{
+  int nr = 0;
+  if (u > 0) {
+    nr += do_lf_putunsigned(file, u / 10);
+    nr += lf_putchr(file, (u % 10) + '0');
+  }
+  return nr;
+}
+
+
+int
+lf_putint(lf *file,
+	  int decimal)
+{
+  int nr = 0;
+  if (decimal == 0)
+    nr += lf_putchr(file, '0');
+  else if (decimal < 0) {
+    nr += lf_putchr(file, '-');
+    nr += do_lf_putunsigned(file, -decimal);
+  }
+  else if (decimal > 0) {
+    nr += do_lf_putunsigned(file, decimal);
+  }
+  else
+    ASSERT(0);
+  return nr;
+}
+
+
+int
+lf_printf(lf *file,
+	  const char *fmt,
+	  ...)
+{
+  int nr = 0;
+  char buf[1024];
+  va_list ap;
+
+  va_start(ap, fmt);
+  vsprintf(buf, fmt, ap);
+  /* FIXME - this is really stuffed but so is vsprintf() on a sun! */
+  ASSERT(strlen(buf) > 0 && strlen(buf) < sizeof(buf));
+  nr += lf_putstr(file, buf);
+  va_end(ap);
+  return nr;
+}
+
+
+int
+lf_print__c_code(lf *file,
+		 const char *code)
+{
+  int nr = 0;
+  const char *chp = code;
+  int in_bit_field = 0;
+  while (*chp != '\0') {
+    if (*chp == '\t')
+      chp++;
+    if (*chp == '#')
+      lf_indent_suppress(file);
+    while (*chp != '\0' && *chp != '\n') {
+      if (chp[0] == '{' && !isspace(chp[1])) {
+	in_bit_field = 1;
+	nr += lf_putchr(file, '_');
+      }
+      else if (in_bit_field && chp[0] == ':') {
+	nr += lf_putchr(file, '_');
+      }
+      else if (in_bit_field && *chp == '}') {
+	nr += lf_putchr(file, '_');
+	in_bit_field = 0;
+      }
+      else {
+	nr += lf_putchr(file, *chp);
+      }
+      chp++;
+    }
+    if (in_bit_field)
+      error("bit field paren miss match some where\n");
+    if (*chp == '\n') {
+      nr += lf_putchr(file, '\n');
+      chp++;
+    }
+  }
+  nr += lf_putchr(file, '\n');
+  return nr;
+}
+
+
+int
+lf_print__external_reference(lf *file,
+			     int line_nr,
+			     const char *file_name)
+{
+  int nr = 0;
+  switch (file->references) {
+  case lf_include_references:
+    lf_indent_suppress(file);
+    nr += lf_putstr(file, "#line ");
+    nr += lf_putint(file, line_nr);
+    nr += lf_putstr(file, " \"");
+    nr += lf_putstr(file, file_name);
+    nr += lf_putstr(file, "\"\n");
+    break;
+  case lf_omit_references:
+    break;
+  }
+  return nr;
+}
+
+int
+lf_print__internal_reference(lf *file)
+{
+  int nr = 0;
+  nr += lf_print__external_reference(file, file->line_nr+2, file->name);
+  /* line_nr == last_line, want to number from next */
+  return nr;
+}
+
+void
+lf_indent(lf *file, int delta)
+{
+  file->indent += delta;
+}
+
+
+int
+lf_print__gnu_copyleft(lf *file)
+{
+  int nr = 0;
+  switch (file->type) {
+  case lf_is_c:
+  case lf_is_h:
+    nr += lf_printf(file, "\
+/*  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.
+ 
+    --
+
+    This file was generated by the program %s */
+", filter_filename(file->program));
+    break;
+  default:
+    ASSERT(0);
+    break;
+  }
+  return nr;
+}
+
+
+int
+lf_putbin(lf *file, int decimal, int width)
+{
+  int nr = 0;
+  int bit;
+  ASSERT(width > 0);
+  for (bit = 1 << (width-1); bit != 0; bit >>= 1) {
+    if (decimal & bit)
+      nr += lf_putchr(file, '1');
+    else
+      nr += lf_putchr(file, '0');
+  }
+  return nr;
+}
+
+int
+lf_print__this_file_is_empty(lf *file)
+{
+  int nr = 0;
+  switch (file->type) {
+  case lf_is_c:
+  case lf_is_h:
+    nr += lf_printf(file,
+		    "/* This generated file (%s) is intentionally left blank */\n",
+		    file->name);
+    break;
+  default:
+    ASSERT(0);
+  }
+  return nr;
+}
+
+int
+lf_print__ucase_filename(lf *file)
+{
+  int nr = 0;
+  const char *chp = file->name;
+  while (*chp != '\0') {
+    char ch = *chp;
+    if (islower(ch)) {
+      nr += lf_putchr(file, toupper(ch));
+    }
+    else if (ch == '.')
+      nr += lf_putchr(file, '_');
+    else
+      nr += lf_putchr(file, ch);
+    chp++;
+  }
+  return nr;
+}
+
+int
+lf_print__file_start(lf *file)
+{
+  int nr = 0;
+  switch (file->type) {
+  case lf_is_h:
+  case lf_is_c:
+    nr += lf_print__gnu_copyleft(file);
+    nr += lf_printf(file, "\n");
+    nr += lf_printf(file, "#ifndef _");
+    nr += lf_print__ucase_filename(file);
+    nr += lf_printf(file, "_\n");
+    nr += lf_printf(file, "#define _");
+    nr += lf_print__ucase_filename(file);
+    nr += lf_printf(file, "_\n");
+    nr += lf_printf(file, "\n");
+    break;
+  default:
+    ASSERT(0);
+  }
+  return nr;
+}
+
+
+int
+lf_print__file_finish(lf *file)
+{
+  int nr = 0;
+  switch (file->type) {
+  case lf_is_h:
+  case lf_is_c:
+    nr += lf_printf(file, "\n");
+    nr += lf_printf(file, "#endif /* _");
+    nr += lf_print__ucase_filename(file);
+    nr += lf_printf(file, "_*/\n");
+    break;
+  default:
+    ASSERT(0);
+  }
+  return nr;
+}
+
+
+int
+lf_print_function_type(lf *file,
+		       const char *type,
+		       const char *prefix,
+		       const char *trailing_space)
+{
+  int nr = 0;
+  nr += lf_printf(file, "%s\\\n(%s)", prefix, type);
+  if (trailing_space != NULL)
+    nr += lf_printf(file, "%s", trailing_space);
+  return nr;
+}
+
+int
+lf_print_function_type_function(lf *file,
+				print_function *print_type,
+				const char *prefix,
+				const char *trailing_space)
+{
+  int nr = 0;
+  nr += lf_printf(file, "%s\\\n(", prefix);
+  nr += print_type(file);
+  nr += lf_printf(file, ")");
+  if (trailing_space != NULL)
+    nr += lf_printf(file, "%s", trailing_space);
+  return nr;
+}
+