gonzui

    1: /*
    2:  *----------------------------------------------------------------------
    3:  *    T2EX Software Package
    4:  *
    5:  *    Copyright 2012 by Ken Sakamura.
    6:  *    This software is distributed under the latest version of T-License 2.x.
    7:  *----------------------------------------------------------------------
    8:  *
    9:  *    Released by T-Engine Forum(http://www.t-engine.org/) at 2012/12/12.
   10:  *    Modified by TRON Forum(http://www.tron.org/) at 2015/06/04.
   11:  *
   12:  *----------------------------------------------------------------------
   13:  */
   14: /*
   15:  * This software package is available for use, modification, 
   16:  * and redistribution in accordance with the terms of the attached 
   17:  * T-License 2.x.
   18:  * If you want to redistribute the source code, you need to attach 
   19:  * the T-License 2.x document.
   20:  * There's no obligation to publish the content, and no obligation 
   21:  * to disclose it to the TRON Forum if you have modified the 
   22:  * software package.
   23:  * You can also distribute the modified source code. In this case, 
   24:  * please register the modification to T-Kernel traceability service.
   25:  * People can know the history of modifications by the service, 
   26:  * and can be sure that the version you have inherited some 
   27:  * modification of a particular version or not.
   28:  *
   29:  *    http://trace.tron.org/tk/?lang=en
   30:  *    http://trace.tron.org/tk/?lang=ja
   31:  *
   32:  * As per the provisions of the T-License 2.x, TRON Forum ensures that 
   33:  * the portion of the software that is copyrighted by Ken Sakamura or 
   34:  * the TRON Forum does not infringe the copyrights of a third party.
   35:  * However, it does not make any warranty other than this.
   36:  * DISCLAIMER: TRON Forum and Ken Sakamura shall not be held
   37:  * responsible for any consequences or damages caused directly or
   38:  * indirectly by the use of this software package.
   39:  *
   40:  * The source codes in bsd_source.tar.gz in this software package are 
   41:  * derived from NetBSD or OpenBSD and not covered under T-License 2.x.
   42:  * They need to be changed or redistributed according to the 
   43:  * representation of each source header.
   44:  */
   45: 
   46: /*
   47:  *      src_mem.c
   48:  *
   49:  *       T2EX: program load functions
   50:  *       memory program source
   51:  */
   52: 
   53: #include <basic.h>
   54: #include <tk/tkernel.h> // for CheckSpaceR
   55: #include <libstr.h>
   56: #include "source.h"
   57: 
   58: /*
   59:  * Read program
   60:  */
   61: LOCAL ER readMemSource(struct LoadSource* ldr, long ofs, void* adr, size_t sz)
   62: {
   63:         ER er;
   64:         UB* p;
   65: 
   66:         /* Check whether the memory is accessible */
   67:         p = ldr->li.mem.buf + ofs;
   68:         er = ChkSpaceR(p, sz);
   69:         if (er < E_OK) {
   70:                 return er;
   71:         }
   72:         
   73:         /* Copy memory contents */
   74:         memcpy(adr, p, sz);
   75:         return sz;
   76: }
   77: 
   78: /*
   79:  * Quit loading
   80:  */
   81: LOCAL ER closeMemSource(struct LoadSource* ldr)
   82: {
   83:         return E_OK;
   84: }
   85: 
   86: /*
   87:  * Start loading
   88:  */
   89: EXPORT ER openMemSource(struct LoadSource* ldr, const struct pm* prog)
   90: {
   91:         ldr->type = prog->pmtype;
   92:         ldr->read = readMemSource;
   93:         ldr->close = closeMemSource;
   94:         ldr->li.mem.buf = prog->pmhdr;
   95: 
   96:         return E_OK;
   97: }