16/othersrc/testemm.c

   1 /* testemm.c\r
   2  *\r
   3  * Test program: Expanded Memory Manager functions\r
   4  * (C) 2011-2012 Jonathan Campbell.\r
   5  * Hackipedia DOS library.\r
   6  *\r
   7  * This code is licensed under the LGPL.\r
   8  * <insert LGPL legal text here>\r
   9  */\r
  10 \r
  11 #include <stdlib.h>\r
  12 #include <string.h>\r
  13 #include <stdint.h>\r
  14 #include <assert.h>\r
  15 #include <stdio.h>\r
  16 #include <conio.h>\r
  17 #include <dos.h>\r
  18 \r
  19 //#include "src/lib/doslib/cpu.h"\r
  20 #include "src/lib/doslib/dos.h"\r
  21 #include "src/lib/doslib/emm.h"\r
  22 //#include <hw/dos/doswin.h>\r
  23 \r
  24 static const char *message = "Hello world. How are you?";\r
  25 static const char *message2 = "Pingas. Sup dawg. Hello world. Dork. Hahahajajaja.";\r
  26 static char tmp[128],tmp2[128];\r
  27 extern int probe_emm0();\r
  28 \r
  29 #if 1\r
  30 # define x_memcpy(a,b,c) memcpy(a,b,c)\r
  31 #else\r
  32 /* what have we come to when friggin' memcpy() causes a GPF?!? */\r
  33 static void x_memcpy(unsigned char *dst,const unsigned char *src,size_t c) {\r
  34         fprintf(stderr,"memcpy %p -> %p (%lu)\n",\r
  35                 dst,src,(unsigned long)c);\r
  36 \r
  37         while (c != 0) {\r
  38             *dst++ = *src++;\r
  39             c--;\r
  40         }\r
  41 }\r
  42 #endif\r
  43 \r
  44 int main() {\r
  45         size_t message_l = strlen(message),message2_l = strlen(message2);\r
  46 \r
  47         probe_dos();\r
  48         printf("DOS version %x.%02u\n",dos_version>>8,dos_version&0xFF);\r
  49         /*if (detect_windows()) {\r
  50                 printf("I am running under Windows.\n");\r
  51                 printf("    Mode: %s\n",windows_mode_str(windows_mode));\r
  52                 printf("    Ver:  %x.%02u\n",windows_version>>8,windows_version&0xFF);\r
  53         }\r
  54         else {\r
  55                 printf("Not running under Windows or OS/2\n");\r
  56         }*/\r
  57 \r
  58         sanity();\r
  59         if (probe_emm()) {\r
  60                 int h1,h2,h3;\r
  61 \r
  62                 sanity();\r
  63                 printf("Expanded memory manager present. Status = 0x%02x Page frame @0x%04x v%x.%x\n",emm_status,emm_page_frame_segment,emm_version>>4,emm_version&0x0F);\r
  64                 emm_update_page_count();\r
  65                 sanity();\r
  66                 printf("  Unallocated pages:     %u (%luKB)\n",\r
  67                         emm_unallocated_pages,\r
  68                         (unsigned long)emm_unallocated_pages << 4UL); /* 2^14 = 16384 */\r
  69                 printf("  Total pages:           %u (%luKB)\n",\r
  70                         emm_total_pages,\r
  71                         (unsigned long)emm_total_pages << 4UL);\r
  72                 printf("  Physical pages:        %u (%luKB)\n",\r
  73                         emm_phys_pages,\r
  74                         (unsigned long)emm_phys_pages << 4UL);\r
  75 \r
  76                 while (getch() != 13);\r
  77                 sanity();\r
  78 \r
  79                 /* print out the mapping table, if available */\r
  80                 if (emm_phys_map != NULL) {\r
  81                         struct emm_phys_page_map *me;\r
  82                         unsigned int i;\r
  83 \r
  84                         printf("Physical page to segment table\n");\r
  85                         for (i=0;i < emm_phys_pages;i++) {\r
  86                                 me = emm_phys_map + i;\r
  87                                 printf("  %02x: 0x%04x",me->number,me->segment);\r
  88                                 if ((i%5) == 4) printf("\n");\r
  89                         }\r
  90                         printf("\n");\r
  91                         sanity();\r
  92                 }\r
  93 \r
  94                 printf("Allocating EMM pages (1): ");\r
  95                 h1 = emm_alloc_pages(1);\r
  96                 sanity();\r
  97                 if (h1 >= 0) {\r
  98                         printf("OK, handle=%u\n",h1);\r
  99                         if (!emm_free_pages(h1)) printf("cannot free\n");\r
 100                 }\r
 101                 else printf("FAILED\n");\r
 102 \r
 103                 printf("Allocating EMM pages (16KB): ");\r
 104                 h1 = emm_alloc_pages(1);\r
 105                 sanity();\r
 106                 if (h1 >= 0) printf("OK, handle=%u\n",h1);\r
 107                 else printf("FAILED\n");\r
 108 \r
 109                 printf("Allocating EMM pages (1.6MB): ");\r
 110                 h2 = emm_alloc_pages(0x19999AUL >> 14UL);\r
 111                 sanity();\r
 112                 if (h2 >= 0) printf("OK, handle=%u\n",h2);\r
 113                 else printf("FAILED\n");\r
 114 \r
 115                 printf("Allocating EMM pages (12MB): ");\r
 116                 h3 = emm_alloc_pages(0xC00000UL >> 14UL);\r
 117                 sanity();\r
 118                 if (h3 >= 0) printf("OK, handle=%u\n",h3);\r
 119                 else printf("FAILED\n");\r
 120 \r
 121                 while (getch() != 13);\r
 122 \r
 123                 if (h1 >= 0 && !emm_free_pages(h1)) printf("Cannot free\n");\r
 124                 sanity();\r
 125                 if (h2 >= 0 && !emm_free_pages(h2)) printf("Cannot free\n");\r
 126                 sanity();\r
 127                 if (h3 >= 0 && !emm_free_pages(h3)) printf("Cannot free\n");\r
 128                 sanity();\r
 129 \r
 130                 printf("Allocating EMM pages (32KB): ");\r
 131                 h1 = emm_alloc_pages(2);\r
 132                 sanity();\r
 133                 if (h1 >= 0) {\r
 134                         printf("OK, handle=%u\n",h1);\r
 135                         if (emm_map_page(h1,/*physical*/0,/*logical*/0)) {\r
 136                                 unsigned int segm = emm_last_phys_page_segment(0);\r
 137                                 printf("Seg %04x\n",segm);\r
 138                                 sanity();\r
 139                                 if (segm > 0) {\r
 140 #if TARGET_MSDOS == 16\r
 141                                         char far *ptr = MK_FP(segm,0);\r
 142 #else\r
 143                                         char *ptr = (char*)(segm << 4UL);\r
 144 #endif\r
 145 \r
 146 #if TARGET_MSDOS == 16\r
 147                                         _fmemcpy(ptr,(char far*)message,message_l+1);\r
 148                                         _fmemcpy((char far*)tmp,ptr,message_l+1);\r
 149 #else\r
 150                                         x_memcpy(ptr,message,message_l+1);\r
 151                                         x_memcpy(tmp,ptr,message_l+1);\r
 152 #endif\r
 153                                         printf("After writing message there, I read back: '%s'\n",tmp);\r
 154 \r
 155                                         if (!emm_map_page(h1,0,1)) printf("Cannot remap\n");\r
 156 \r
 157 #if TARGET_MSDOS == 16\r
 158                                         _fmemcpy(ptr,(char far*)message2,message2_l+1);\r
 159                                         _fmemcpy((char far*)tmp,ptr,message2_l+1);\r
 160 #else\r
 161                                         x_memcpy(ptr,message2,message2_l+1);\r
 162                                         x_memcpy(tmp,ptr,message2_l+1);\r
 163 #endif\r
 164                                         printf("After mapping to page 2 and writing there, I read back: '%s'\n",tmp);\r
 165 \r
 166                                         if (!emm_map_page(h1,0,0)) printf("Cannot remap\n");\r
 167 \r
 168 #if TARGET_MSDOS == 16\r
 169                                         _fmemcpy((char far*)tmp,ptr,message_l+1);\r
 170 #else\r
 171                                         x_memcpy(tmp,ptr,message_l+1);\r
 172 #endif\r
 173                                         printf("After mapping back to 1, I read back: '%s'\n",tmp);\r
 174 \r
 175                                         if (emm_map_page(h1,0,2)) printf("Whoops, I was able to map logical pages beyond what I allocated\n");\r
 176                                 }\r
 177                                 else {\r
 178                                         printf("Cannot get segment\n");\r
 179                                 }\r
 180                                 if (!emm_map_page(h1,0,0xFFFF)) printf("Cannot unmap\n");\r
 181                         }\r
 182                         else {\r
 183                                 printf("Cannot map\n");\r
 184                         }\r
 185                         if (!emm_free_pages(h1)) printf("Cannot free\n");\r
 186                 }\r
 187                 else printf("FAILED\n");\r
 188 \r
 189                 printf("Allocating EMM pages (32KB): ");\r
 190                 h1 = emm_alloc_pages(2);\r
 191                 if (h1 >= 0) {\r
 192                         printf("OK, handle=%u\n",h1);\r
 193                         if (    emm_map_page(h1,/*physical*/0,/*logical*/0) &&\r
 194                                 emm_map_page(h1,/*physical*/1,/*logical*/1)) {\r
 195                                 unsigned int seg1 = emm_last_phys_page_segment(0);\r
 196                                 unsigned int seg2 = emm_last_phys_page_segment(1);\r
 197                                 printf("Seg %04x,%04x\n",seg1,seg2);\r
 198                                 if (seg1 > 0 && seg2 > 0) {\r
 199 #if TARGET_MSDOS == 16\r
 200                                         char far *ptr1 = MK_FP(seg1,0);\r
 201                                         char far *ptr2 = MK_FP(seg2,0);\r
 202 #else\r
 203                                         char *ptr1 = (char*)(seg1 << 4UL);\r
 204                                         char *ptr2 = (char*)(seg2 << 4UL);\r
 205 #endif\r
 206 \r
 207 #if TARGET_MSDOS == 16\r
 208                                         _fmemcpy(ptr1,(char far*)message,message_l+1);\r
 209                                         _fmemcpy(ptr2,(char far*)message2,message2_l+1);\r
 210 #else\r
 211                                         memcpy(ptr1,message,message_l+1);\r
 212                                         memcpy(ptr2,message2,message2_l+1);\r
 213 #endif\r
 214 \r
 215 #if TARGET_MSDOS == 16\r
 216                                         _fmemcpy((char far*)tmp,ptr1,message_l+1);\r
 217                                         _fmemcpy((char far*)tmp2,ptr2,message2_l+1);\r
 218 #else\r
 219                                         memcpy(tmp,ptr1,message_l+1);\r
 220                                         memcpy(tmp2,ptr2,message2_l+1);\r
 221 #endif\r
 222 \r
 223                                         printf("After writing message there, I read back:\n'%s'\n'%s'\n",tmp,tmp2);\r
 224 \r
 225                                         /* now swap the pages */\r
 226                                         if (!emm_map_page(h1,1,0)) printf("cannot map log 1 -> phys 0\n");\r
 227                                         if (!emm_map_page(h1,0,1)) printf("cannot map log 0 -> phys 1\n");\r
 228 \r
 229 #if TARGET_MSDOS == 16\r
 230                                         _fmemcpy((char far*)tmp,ptr1,message2_l+1);\r
 231                                         _fmemcpy((char far*)tmp2,ptr2,message_l+1);\r
 232 #else\r
 233                                         memcpy(tmp,ptr1,message2_l+1);\r
 234                                         memcpy(tmp2,ptr2,message_l+1);\r
 235 #endif\r
 236 \r
 237                                         printf("After swapping pages, I read back:\n'%s'\n'%s'\n",tmp,tmp2);\r
 238                                 }\r
 239                                 else {\r
 240                                         printf("Cannot get segment\n");\r
 241                                 }\r
 242                                 if (!emm_map_page(h1,0,0xFFFF) || !emm_map_page(h1,1,0xFFFF)) printf("Cannot unmap\n");\r
 243                         }\r
 244                         else {\r
 245                                 printf("Cannot map\n");\r
 246                         }\r
 247                         if (!emm_free_pages(h1)) printf("Cannot free\n");\r
 248                 }\r
 249                 else printf("FAILED\n");\r
 250 \r
 251                 getch();\r
 252 \r
 253                 /* we do this test because Microsoft EMM386.EXE seems to max out at 32MB.\r
 254                  * the host could have 256MB of total memory and it would still report 32MB in EMS */\r
 255                 printf("we do this test because Microsoft EMM386.EXE seems to max out at 32MB.\n the host could have 256MB of total memory and it would still report 32MB in EMS");\r
 256                 printf("Allocating EMM pages (48MB): ");\r
 257                 h1 = emm_alloc_pages((48UL << 20UL) >> 14UL);\r
 258                 if (h1 >= 0) {\r
 259                         printf("OK, handle=%u\n",h1);\r
 260                         if (!emm_free_pages(h1)) printf("cannot free\n");\r
 261                 }\r
 262                 else printf("FAILED\n");\r
 263 \r
 264                 printf("Allocating EMM pages (96MB): ");\r
 265                 h1 = emm_alloc_pages((96UL << 20UL) >> 14UL);\r
 266                 if (h1 >= 0) {\r
 267                         printf("OK, handle=%u\n",h1);\r
 268                         if (!emm_free_pages(h1)) printf("cannot free\n");\r
 269                 }\r
 270                 else printf("FAILED\n");\r
 271         }\r
 272 \r
 273         return 0;\r
 274 }\r
 275 \r