[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, 158 insertions, 0 deletions

diff --git a/sim/rl78/load.c b/sim/rl78/load.c
new file mode 100644
index 0000000..cb50d21
--- /dev/null
+++ b/sim/rl78/load.c
@@ -0,0 +1,158 @@
+/* load.c --- loading object files into 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 <stdlib.h>
+#include <string.h>
+
+#include "libiberty.h"
+#include "bfd.h"
+#include "libbfd.h"
+#include "cpu.h"
+#include "mem.h"
+#include "load.h"
+#include "elf/internal.h"
+#include "elf/common.h"
+
+/* Helper function for invoking a GDB-specified printf.  */
+static void
+xprintf (host_callback *callback, const char *fmt, ...)
+{
+  va_list ap;
+
+  va_start (ap, fmt);
+
+  (*callback->vprintf_filtered) (callback, fmt, ap);
+
+  va_end (ap);
+}
+
+/* Given a file offset, look up the section name.  */
+static const char *
+find_section_name_by_offset (bfd *abfd, file_ptr filepos)
+{
+  asection *s;
+
+  for (s = abfd->sections; s; s = s->next)
+    if (s->filepos == filepos)
+      return bfd_get_section_name (abfd, s);
+
+  return "(unknown)";
+}
+
+void
+rl78_load (bfd *prog, host_callback *callbacks, const char * const simname)
+{
+  Elf_Internal_Phdr * phdrs;
+  long sizeof_phdrs;
+  int num_headers;
+  int i;
+  int max_rom = 0;
+
+  init_cpu ();
+
+  /* Note we load by ELF program header not by BFD sections.
+     This is because BFD sections get their information from
+     the ELF section structure, which only includes a VMA value
+     and not an LMA value.  */
+  sizeof_phdrs = bfd_get_elf_phdr_upper_bound (prog);
+  if (sizeof_phdrs == 0)
+    {
+      fprintf (stderr, "%s: Failed to get size of program headers\n", simname);
+      return;
+    }
+  phdrs = xmalloc (sizeof_phdrs);
+
+  num_headers = bfd_get_elf_phdrs (prog, phdrs);
+  if (num_headers < 1)
+    {
+      fprintf (stderr, "%s: Failed to read program headers\n", simname);
+      return;
+    }
+  
+  for (i = 0; i < num_headers; i++)
+    {
+      Elf_Internal_Phdr * p = phdrs + i;
+      char *buf;
+      bfd_vma size;
+      bfd_vma base;
+      file_ptr offset;
+
+      size = p->p_filesz;
+      if (size <= 0)
+	continue;
+
+      base = p->p_paddr;
+      if (verbose > 1)
+	fprintf (stderr, "[load segment: lma=%08x vma=%08x size=%08x]\n",
+		 (int) base, (int) p->p_vaddr, (int) size);
+      if (callbacks)
+	xprintf (callbacks,
+	         "Loading section %s, size %#lx lma %08lx vma %08lx\n",
+	         find_section_name_by_offset (prog, p->p_offset),
+		 size, base, p->p_vaddr);
+
+      buf = xmalloc (size);
+
+      offset = p->p_offset;
+      if (prog->iovec->bseek (prog, offset, SEEK_SET) != 0)
+	{
+	  fprintf (stderr, "%s, Failed to seek to offset %lx\n", simname, (long) offset);
+	  continue;
+	}
+
+      if (prog->iovec->bread (prog, buf, size) != size)
+	{
+	  fprintf (stderr, "%s: Failed to read %lx bytes\n", simname, size);
+	  continue;
+	}
+
+      if (base > 0xeffff || base + size > 0xeffff)
+	{
+	  fprintf (stderr, "%s, Can't load image to RAM/SFR space: 0x%lx - 0x%lx\n",
+		   simname, base, base+size);
+	  continue;
+	}
+      if (max_rom < base + size)
+	max_rom = base + size;
+
+      mem_put_blk (base, buf, size);
+      free (buf);
+    }
+
+  free (phdrs);
+
+  mem_rom_size (max_rom);
+
+  pc = prog->start_address;
+
+  if (strcmp (bfd_get_target (prog), "srec") == 0
+      || pc == 0)
+    {
+      pc = mem_get_hi (0);
+    }
+
+  if (verbose > 1)
+    fprintf (stderr, "[start pc=%08x]\n", (unsigned int) pc);
+}