com32/lib/syslinux/runimage.c

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 2007-2008 H. Peter Anvin - All Rights Reserved
   4  *
   5  *   Permission is hereby granted, free of charge, to any person
   6  *   obtaining a copy of this software and associated documentation
   7  *   files (the "Software"), to deal in the Software without
   8  *   restriction, including without limitation the rights to use,
   9  *   copy, modify, merge, publish, distribute, sublicense, and/or
  10  *   sell copies of the Software, and to permit persons to whom
  11  *   the Software is furnished to do so, subject to the following
  12  *   conditions:
  13  *
  14  *   The above copyright notice and this permission notice shall
  15  *   be included in all copies or substantial portions of the Software.
  16  *
  17  *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  19  *   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  20  *   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  21  *   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  22  *   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23  *   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  24  *   OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  * ----------------------------------------------------------------------- */
  27
  28 /*
  29  * runimage.c
  30  *
  31  * Load and run a syslinux image.
  32  */
  33
  34 #include <stdlib.h>
  35 #include <string.h>
  36 #include <syslinux/boot.h>
  37 #include <com32.h>
  38
  39 void syslinux_run_kernel_image(const char *filename, const char *cmdline,
  40                                uint32_t ipappend_flags, uint32_t type)
  41 {
  42     static com32sys_t ireg;
  43     char *bbfilename = NULL;
  44     char *bbcmdline  = NULL;
  45
  46     bbfilename = lstrdup(filename);
  47     if (!bbfilename)
  48         goto fail;
  49
  50     bbcmdline = lstrdup(cmdline);
  51     if (!bbcmdline)
  52         goto fail;
  53
  54
  55     ireg.eax.w[0] = 0x0016;
  56     ireg.ds = SEG(bbfilename);
  57     /* ireg.esi.w[0] = OFFS(bbfilename); */
  58     ireg.es = SEG(bbcmdline);
  59     /* ireg.ebx.w[0] = OFFS(bbcmdline); */
  60     ireg.ecx.l = ipappend_flags;
  61     ireg.edx.l = type;
  62
  63     __intcall(0x22, &ireg, 0);
  64
  65 fail:
  66     if (bbcmdline)
  67         lfree(bbcmdline);
  68     if (bbfilename)
  69         lfree(bbfilename);
  70 }