Easing in binfmt support

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1892 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 236 insertions, 0 deletions

diff --git a/nuttx/binfmt/nxflat.c b/nuttx/binfmt/nxflat.c
new file mode 100644
index 000000000..d0456bebd
--- /dev/null
+++ b/nuttx/binfmt/nxflat.c
@@ -0,0 +1,236 @@
+/****************************************************************************
+ * binfmt/nxflat.c
+ *
+ *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <sys/types.h>
+
+#include <string.h>
+#include <nxflat.h>
+#include <debug.h>
+#include <errno.h>
+
+#include <arpa/inet.h>
+#include <nuttx/binfmt.h>
+#include <nuttx/nxflat.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+static int nxflat_loadbinary(struct binary_s *binp);
+#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_BINFMT)
+static void nxflat_dumpmemory(void *addr, int nbytes);
+static void nxflat_dumploadinfo(struct nxflat_loadinfo_s *loadinfo);
+#endif
+
+/****************************************************************************
+ * Private Constant Data
+ ****************************************************************************/
+
+static struct binfmt_s g_nxflatbinfmt =
+{
+  NULL,                /* next */
+  nxflat_loadbinary,   /* load */
+};
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nnxflat_dumpmemory
+ ****************************************************************************/
+
+#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_BINFMT)
+static void nxflat_dumpmemory(void *addr, int nbytes)
+{
+  ubyte *ptr;
+
+  bdbg("  ADDRESS    VALUE\n");
+  for (ptr = (ubyte*)addr; nbytes > 0; ptr += 4, nbytes -= 4)
+    {
+      bdbg("  %p: %02x %02x %02x %02x\n", ptr, ptr[0], ptr[1], ptr[2], ptr[3]);
+    }
+}
+#else /* CONFIG_XFLAT_DEBUG */
+# define nnxflat_dumpmemory(a,n)
+#endif /* CONFIG_XFLAT_DEBUG */
+
+/****************************************************************************
+ * Name: nxflat_dumploadinfo
+ ****************************************************************************/
+
+#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_BINFMT)
+static void nxflat_dumploadinfo(struct nxflat_loadinfo_s *loadinfo)
+{
+  unsigned long dspace_size =
+    NXFLAT_DATA_OFFSET +
+    loadinfo->data_size +
+    loadinfo->bss_size +
+    loadinfo->stack_size;
+
+  bdbg("LOAD_INFO:\n");
+  bdbg("  ISPACE:\n");
+  bdbg("    ispace:       %08lx\n", loadinfo->ispace);
+  bdbg("    entry_offset: %08lx\n", loadinfo->entry_offset);
+  bdbg("    ispace_size:  %08lx\n", loadinfo->ispace_size);
+
+  bdbg("  DSPACE:\n");
+  bdbg("    dspace:       %08lx\n", loadinfo->dspace);
+  bdbg("      (ldso):     %08x\n",  NXFLAT_DATA_OFFSET);
+  bdbg("    data_size:    %08lx\n", loadinfo->data_size);
+  bdbg("    bss_size:     %08lx\n", loadinfo->bss_size);
+  bdbg("      (pad):      %08lx\n", loadinfo->dspace_size - dspace_size);
+  bdbg("    stack_size:   %08lx\n", loadinfo->stack_size);
+  bdbg("    dspace_size:  %08lx\n", loadinfo->dspace_size);
+
+  bdbg("  ARGUMENTS:\n");
+  bdbg("    arg_start:    %08lx\n", loadinfo->arg_start);
+  bdbg("    env_start:    %08lx\n", loadinfo->env_start);
+  bdbg("    env_end:      %08lx\n", loadinfo->env_end);
+
+  bdbg("  RELOCS:\n");
+  bdbg("    reloc_start:  %08lx\n", loadinfo->reloc_start);
+  bdbg("    reloc_count:  %08lx\n", loadinfo->reloc_count);
+
+  bdbg("  HANDLES:\n");
+  bdbg("    filfd:        %d\n",    loadinfo->filfd);
+
+  bdbg("  NXFLT HEADER:");
+  bdbg("    header:       %p\n",    loadinfo->header);
+
+  bdbg("  ALLOCATIONS:\n");
+  bdbg("    alloc_start:  %08lx\n", loadinfo->alloc_start);
+  bdbg("    alloc_size:   %08lx\n", loadinfo->alloc_size);
+}
+#else /* CONFIG_XFLAT_DEBUG */
+# define nxflat_dumploadinfo(i)
+#endif /* CONFIG_XFLAT_DEBUG */
+
+/****************************************************************************
+ * Name: nxflat_loadbinary
+ *
+ * Description:
+ *   Verify that the file is an NXFLAT binary and, if so, load the NXFLAT
+ *   binary into memory
+ *
+ ****************************************************************************/
+
+static int nxflat_loadbinary(struct binary_s *binp)
+{
+  struct nxflat_hdr_s      header;    /* Just allocated memory */
+  struct nxflat_loadinfo_s loadinfo;  /* Contains globals for libnxflat */
+  int                      ret;
+
+  bvdbg("Loading file: %s\n", binp->filename);
+
+  /* Initialize the xflat library to load the program binary. */
+
+  ret = nxflat_init(binp->filename, &header, &loadinfo);
+  nxflat_dumploadinfo(&loadinfo);
+  if (ret != 0)
+    {
+      bdbg("Failed to initialize for load of NXFLT program: %d\n", ret);
+      return ret;
+    }
+
+  /* Load the program binary */
+
+  ret = nxflat_load(&loadinfo);
+  nxflat_dumploadinfo(&loadinfo);
+  if (ret != 0)
+    {
+      bdbg("Failed to load NXFLT program binary: %d\n", ret);
+      nxflat_uninit(&loadinfo);
+      return ret;
+    }
+
+  /* Return the load information */
+
+  binp->entrypt = (main_t)(loadinfo.ispace + loadinfo.entry_offset);
+  binp->picbase = (void*)loadinfo.dspace;
+
+  bvdbg("ENTRY CODE:\n");
+  nxflat_dumpmemory(binp->entrypt, 16*sizeof(unsigned long));
+  nxflat_uninit(&loadinfo);
+  return OK;
+}
+
+/***********************************************************************
+ * Public Functions
+ ***********************************************************************/
+
+/***********************************************************************
+ * Name: nxflat_initialize
+ *
+ * Description:
+ *   NXFLAT support is built unconditionally.  However, it order to
+ *   use this binary format, this function must be called during system
+ *   format in order to register the NXFLAT binary format.
+ *
+ ***********************************************************************/
+
+int nxflat_initialize(void)
+{
+  int ret;
+
+  /* Register ourselves as a binfmt loader */
+
+  bvdbg("Registering NXFLAT\n");
+  ret = register_binfmt(&g_nxflatbinfmt);
+  if (ret != 0)
+    {
+      bdbg("Failed to register binfmt: %d\n", ret);
+    }
+  return ret;
+}
+
+/****************************************************************************
+ * Name: nxflat_uninitialize
+ ****************************************************************************/
+
+void nxflat_uninitialize(void)
+{
+  unregister_binfmt(&g_nxflatbinfmt);
+}
+