Add basic module management logic

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1894 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 3 insertions, 47 deletions

diff --git a/nuttx/include/nxflat.h b/nuttx/include/nxflat.h
index 59f158dd4..b670b7976 100644
--- a/nuttx/include/nxflat.h
+++ b/nuttx/include/nxflat.h
@@ -60,16 +60,12 @@
 struct nxflat_hdr_s
 {
   /* The "magic number identifying the file type.  This field should contain
-   * "NxFT"
+   * "NxFT".  NOTE that there is not other versioning information other than
+   * this magic number.
    */
 
   char  h_magic[4];
 
-  /* NXFLAT revision number number. */
-
-  uint16 h_rev;
-  uint16 h_pad;
-
   /* The following fields provide the memory map for the nxflat binary.
    *
    * h_entry      - Offset to the the first executable insruction from
@@ -113,7 +109,7 @@ struct nxflat_hdr_s
   uint32 h_relocstart;       /* Offset of relocation records */
   uint32 h_reloccount;       /* Number of relocation records */
 
-  /* Imported and exported symbol tables
+  /* Imported symbol table (NOTE no symbols are exported)
    *
    * h_importsymbols - Offset to the beginning of an array of imported
    *                   symbol structures (struct nxflat_import).  The
@@ -123,39 +119,12 @@ struct nxflat_hdr_s
    *                   the beginning of the file) to the name of
    *                   a symbol string.  This string is null-terminated.
    * h_importcount   - The number of records in the h_exportsymbols array.
-   * h_exportsymbols - Offset to the beginning of an array of export
-   *                   symbol structures (struct nxflat_export).  The
-   *                   h_importsymbols offset is relative to the
-   *                   beginning of the file.  Each entry of the
-   *                   array contains an uint32 offset (again from
-   *                   the beginning of the file) to the name of
-   *                   a symbol string.  This string is null-terminated.
-   * h_exportcount   - The number of records in the h_exportsymbols array.
-   *
-   * NOTE:  All of the arrays referenced in the header reside in the
-   * the .text section.  This is possible because these arrays are
-   * read-only and are only referenced by the load.  Residing in text
-   * also guarantees that only one copy of the array is required.
-   *
-   * An exception is the h_importsymbols array with will lie
-   * in .data.  This array contains write-able data and must have
-   * a single instance per process.  NOTE:  The string offset contained
-   * within nxflat_import still refers to strings residing in the text
-   * section.
    */
 
   uint32  h_importsymbols;   /* Offset to list of imported symbols */
-  uint32  h_exportsymbols;   /* Offset to list of exported symbols */
   uint16  h_importcount;     /* Number of imported symbols */
-  uint16  h_exportcount;     /* Number of imported symbols */
 };
 
-/* Legal values for the version field.  */
-
-#define NXFLAT_VERSION_NONE     0      /* Invalid NXFLAT version */
-#define NXFLAT_VERSION_CURRENT  1      /* Current version */
-#define NXFLAT_VERSION_NUM      2
-
 /****************************************************************************
  * NXFLAT Relocation types.
  *
@@ -193,17 +162,4 @@ struct nxflat_import_s
   uint32 i_funcaddress; /* Resolved address of imported function */
 };
 
-/****************************************************************************
- * Exported symbol type
- *
- * The exported symbols are an array of the following type.  The fields
- * in each element are stored in native machine order.
- ****************************************************************************/
-
-struct nxflat_export_s
-{
-  uint32 x_funcname;    /* Offset to name of exported function */
-  uint32 x_funcaddress; /* Address of exported function */
-};
-
 #endif /* __INCLUDE_NXFLAT_H */