[sim]

* configure.tgt: Add rl78 support.
* configure: Regenerate.
* rl78: New directory.
* MAINTAINERS: Add myself as RL78 maintainer.
[gdb]
* NEWS: Mention RL78 simulator.

1 files changed, 343 insertions, 0 deletions

diff --git a/sim/rl78/trace.c b/sim/rl78/trace.c
new file mode 100644
index 0000000..12f7893
--- /dev/null
+++ b/sim/rl78/trace.c
@@ -0,0 +1,343 @@
+/* trace.c --- tracing output for the RL78 simulator.
+
+   Copyright (C) 2005, 2007, 2008, 2009, 2010, 2011
+   Free Software Foundation, Inc.
+   Contributed by Red Hat, Inc.
+
+   This file is part of the GNU simulators.
+
+   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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+
+#include "config.h"
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <ctype.h>
+
+#include "libiberty.h"
+#include "bfd.h"
+#include "dis-asm.h"
+
+#include "cpu.h"
+#include "mem.h"
+#include "load.h"
+
+static int
+sim_dis_read (bfd_vma memaddr, bfd_byte * ptr, unsigned int length,
+	      struct disassemble_info *info)
+{
+  mem_get_blk (memaddr, ptr, length);
+  return 0;
+}
+
+/* Filter out (in place) symbols that are useless for disassembly.
+   COUNT is the number of elements in SYMBOLS.
+   Return the number of useful symbols. */
+
+static long
+remove_useless_symbols (asymbol ** symbols, long count)
+{
+  register asymbol **in_ptr = symbols, **out_ptr = symbols;
+
+  while (-- count >= 0)
+    {
+      asymbol *sym = *in_ptr ++;
+
+      if (strstr (sym->name, "gcc2_compiled"))
+	continue;
+      if (sym->name == NULL || sym->name[0] == '\0')
+	continue;
+      if (sym->flags & (BSF_DEBUGGING))
+	continue;
+      if (bfd_is_und_section (sym->section)
+	  || bfd_is_com_section (sym->section))
+	continue;
+
+      *out_ptr++ = sym;
+    }
+  return out_ptr - symbols;
+}
+
+static int
+compare_symbols (const PTR ap, const PTR bp)
+{
+  const asymbol *a = *(const asymbol **) ap;
+  const asymbol *b = *(const asymbol **) bp;
+
+  if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
+    return 1;
+  else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
+    return -1;
+  return 0;
+}
+
+static char opbuf[1000];
+
+static int
+op_printf (char *buf, char *fmt, ...)
+{
+  int ret;
+  va_list ap;
+
+  va_start (ap, fmt);
+  ret = vsprintf (opbuf + strlen (opbuf), fmt, ap);
+  va_end (ap);
+  return ret;
+}
+
+static bfd *       current_bfd = NULL;
+static asymbol **  symtab = NULL;
+static int         symcount = 0;
+static asection *  code_section = NULL;
+static bfd_vma     code_base = 0;
+static struct disassemble_info info;
+
+void
+sim_disasm_init (bfd *prog)
+{
+  current_bfd = prog;
+}
+
+typedef struct Files
+{
+  struct Files *next;
+  char *filename;
+  int nlines;
+  char **lines;
+  char *data;
+} Files;
+Files *files = 0;
+
+static char *
+load_file_and_line (const char *filename, int lineno)
+{
+  Files *f;
+  for (f = files; f; f = f->next)
+    if (strcmp (f->filename, filename) == 0)
+      break;
+  if (!f)
+    {
+      int i;
+      struct stat s;
+      const char *found_filename, *slash;
+
+      found_filename = filename;
+      while (1)
+	{
+	  if (stat (found_filename, &s) == 0)
+	    break;
+	  slash = strchr (found_filename, '/');
+	  if (!slash)
+	    return "";
+	  found_filename = slash + 1;
+	}
+
+      f = (Files *) xmalloc (sizeof (Files));
+      f->next = files;
+      files = f;
+      f->filename = xstrdup (filename);
+      f->data = (char *) xmalloc (s.st_size + 2);
+      FILE *file = fopen (found_filename, "rb");
+      fread (f->data, 1, s.st_size, file);
+      f->data[s.st_size] = 0;
+      fclose (file);
+
+      f->nlines = 1;
+      for (i = 0; i < s.st_size; i ++)
+	if (f->data[i] == '\n')
+	  f->nlines ++;
+      f->lines = (char **) xmalloc (f->nlines * sizeof (char *));
+      f->lines[0] = f->data;
+      f->nlines = 1;
+      for (i = 0; i < s.st_size; i ++)
+	if (f->data[i] == '\n')
+	  {
+	    f->lines[f->nlines] = f->data + i + 1;
+	    while (*f->lines[f->nlines] == ' '
+		   || *f->lines[f->nlines] == '\t')
+	      f->lines[f->nlines] ++;
+	    f->nlines ++;
+	    f->data[i] = 0;
+	  }
+    }
+  if (lineno < 1 || lineno > f->nlines)
+    return "";
+  return f->lines[lineno - 1];
+}
+
+int
+sim_get_current_source_location (const char **  pfilename,
+				 const char **  pfunctionname,
+				 unsigned int * plineno)
+{
+  static int   initted = 0;
+  int          mypc = pc;
+
+  if (current_bfd == NULL)
+    return 0;
+
+  if (!initted)
+    {
+      int storage;
+      asection * s;
+
+      initted = 1;
+      memset (& info, 0, sizeof (info));
+      INIT_DISASSEMBLE_INFO (info, stdout, op_printf);
+      info.read_memory_func = sim_dis_read;
+      info.arch = bfd_get_arch (current_bfd);
+      info.mach = bfd_get_mach (current_bfd);
+      if (info.mach == 0)
+	info.arch = bfd_arch_rl78;
+
+      disassemble_init_for_target (& info);
+
+      storage = bfd_get_symtab_upper_bound (current_bfd);
+      if (storage > 0)
+	{
+	  symtab = (asymbol **) xmalloc (storage);
+	  symcount = bfd_canonicalize_symtab (current_bfd, symtab);
+	  symcount = remove_useless_symbols (symtab, symcount);
+	  qsort (symtab, symcount, sizeof (asymbol *), compare_symbols);
+	}
+
+      for (s = current_bfd->sections; s; s = s->next)
+	{
+	  if (s->flags & SEC_CODE || code_section == 0)
+	    {
+	      code_section = s;
+	      code_base = bfd_section_lma (current_bfd, s);
+	      break;
+	    }
+	}
+    }
+
+  *pfilename = *pfunctionname = NULL;
+  *plineno = 0;
+
+  bfd_find_nearest_line
+    (current_bfd, code_section, symtab, mypc - code_base,
+     pfilename, pfunctionname, plineno);
+
+  return 1;
+}
+
+void
+sim_disasm_one (void)
+{
+  static int           last_sym = -1;
+  static const char *  prev_filename = "";
+  static int           prev_lineno = 0;
+  const char *  filename;
+  const char *  functionname;
+  unsigned int  lineno;
+  int           sym, bestaddr;
+  int           min, max, i;
+  int           save_trace = trace;
+  int           mypc = pc;
+
+  if (! sim_get_current_source_location (& filename, & functionname, & lineno))
+    return;
+
+  trace = 0;
+
+  if (filename && functionname && lineno)
+    {
+      if (lineno != prev_lineno || strcmp (prev_filename, filename))
+	{
+	  char *       the_line = load_file_and_line (filename, lineno);
+	  const char * slash = strrchr (filename, '/');
+
+	  if (!slash)
+	    slash = filename;
+	  else
+	    slash ++;
+	  printf
+	    ("========================================"
+	     "=====================================\n");
+	  printf ("\033[37;41m %s:%d: \033[33;40m %s\033[K\033[0m\n",
+		  slash, lineno, the_line);
+	}
+      prev_lineno = lineno;
+      prev_filename = filename;
+    }
+
+  min = -1;
+  max = symcount;
+  while (min < max - 1)
+    {
+      bfd_vma sa;
+
+      sym = (min + max) / 2;
+      sa = bfd_asymbol_value (symtab[sym]);
+      /*printf ("checking %4d %08x %s\n",
+	sym, sa, bfd_asymbol_name (symtab[sym])); */
+      if (sa > mypc)
+	max = sym;
+      else if (sa < mypc)
+	min = sym;
+      else
+	{
+	  min = sym;
+	  break;
+	}
+    }
+
+  if (min != -1 && min != last_sym)
+    {
+      bestaddr = bfd_asymbol_value (symtab[min]);
+      printf ("\033[43;30m%s", bfd_asymbol_name (symtab[min]));
+      if (bestaddr != mypc)
+	printf ("+%d", mypc - bestaddr);
+      printf (":\t\t\t\033[0m\n");
+      last_sym = min;
+#if 0
+      if (trace == 1)
+	if (strcmp (bfd_asymbol_name (symtab[min]), "abort") == 0
+	    || strcmp (bfd_asymbol_name (symtab[min]), "exit") == 0)
+	  trace = 0;
+#endif
+    }
+
+#define TCR0	0xf0180
+
+  opbuf[0] = 0;
+#ifdef CYCLE_ACCURATE
+  printf ("\033[33m %04u %06x: ", (int)(regs.cycle_count % 10000), mypc);
+#else
+  printf ("\033[33m %08llx %06x: ", total_clocks, mypc);
+#endif
+
+  max = print_insn_rl78 (mypc, & info);
+
+  for (i = 0; i < max; i ++)
+    printf ("%02x", mem_get_qi (mypc + i));
+
+  do
+    {
+      printf ("  ");
+      i ++;
+    }
+  while (i < 6);
+
+  printf ("%-16s  ", opbuf);
+
+  printf ("\033[0m\n");
+  trace = save_trace;
+}