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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | /* Project: OSLib |
| 2 | * Description: The OS Construction Kit |
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| 3 | * Date: 1.6.2000 |
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| 4 | * Idea by: Luca Abeni & Gerardo Lamastra |
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| 5 | * |
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| 6 | * OSLib is an SO project aimed at developing a common, easy-to-use |
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| 7 | * low-level infrastructure for developing OS kernels and Embedded |
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| 8 | * Applications; it partially derives from the HARTIK project but it |
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| 9 | * currently is independently developed. |
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| 10 | * |
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| 11 | * OSLib is distributed under GPL License, and some of its code has |
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| 12 | * been derived from the Linux kernel source; also some important |
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| 13 | * ideas come from studying the DJGPP go32 extender. |
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| 14 | * |
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| 15 | * We acknowledge the Linux Community, Free Software Foundation, |
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| 16 | * D.J. Delorie and all the other developers who believe in the |
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| 17 | * freedom of software and ideas. |
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| 18 | * |
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| 19 | * For legalese, check out the included GPL license. |
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| 20 | */ |
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| 21 | |||
| 22 | /* VM86 demo: tries to call BIOS services in vm86 mode... */ |
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| 23 | |||
| 24 | #include <ll/i386/hw-func.h> |
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| 25 | #include <ll/i386/tss-ctx.h> |
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| 26 | #include <ll/i386/x-bios.h> |
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| 27 | #include <ll/i386/cons.h> |
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| 28 | #include <ll/i386/error.h> |
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| 29 | #include <ll/stdlib.h> |
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| 30 | |||
| 31 | #define T 1000 |
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| 32 | #define WAIT() for (w = 0; w < 0xFFFFFFFF; w++) |
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| 33 | |||
| 34 | static unsigned long int w; |
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| 35 | |||
| 36 | #define __VM86__ |
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| 37 | |||
| 38 | #ifdef __VM86__ |
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| 39 | void vm86BIOSDemo(void) |
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| 40 | { |
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| 41 | X_REGS16 ir,or; |
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| 42 | X_SREGS16 sr; |
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| 43 | /* Print ASCII character */ |
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| 44 | ir.h.ah = 9; |
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| 45 | /* AL = character to display */ |
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| 46 | ir.h.al = '+'; |
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| 47 | /* BH = page number, BL = attribute */ |
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| 48 | ir.x.bx = 3; |
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| 49 | /* Count number */ |
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| 50 | ir.x.cx = 3; |
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| 51 | vm86_callBIOS(0x10,&ir,&or,&sr); |
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| 52 | } |
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| 53 | #else |
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| 54 | |||
| 55 | void XBIOSDemo(void) |
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| 56 | { |
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| 57 | X_REGS16 ir,or; |
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| 58 | X_SREGS16 sr; |
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| 59 | /* Set video mode */ |
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| 60 | ir.h.ah = 9; |
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| 61 | ir.h.al = '+'; |
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| 62 | ir.x.bx = 3; |
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| 63 | ir.x.cx = 3; |
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| 64 | X_callBIOS(0x10,&ir,&or,&sr); |
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| 65 | } |
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| 66 | #endif |
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| 67 | |||
| 68 | void BIOSDemo(void) |
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| 69 | { |
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| 70 | X_REGS16 ir,or; |
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| 71 | X_SREGS16 sr; |
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| 72 | register int i; |
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| 73 | /* Set video mode */ |
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| 74 | ir.h.ah = 0; |
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| 75 | ir.h.al = 0x12; |
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| 76 | vm86_callBIOS(0x10,&ir,&or,&sr); |
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| 77 | #if 1 |
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| 78 | /* Put some pixels */ |
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| 79 | for (i = 0; i < 200; i++) { |
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| 80 | ir.h.ah = 0x0C; |
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| 81 | ir.h.al = i % 16; |
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| 82 | ir.x.bx = 0; |
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| 83 | ir.x.dx = i+40; |
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| 84 | ir.x.cx = i+100; |
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| 85 | vm86_callBIOS(0x10,&ir,&or,&sr); |
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| 86 | } |
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| 87 | #endif |
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| 88 | WAIT(); |
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| 89 | /* Set video mode */ |
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| 90 | ir.h.ah = 0; |
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| 91 | ir.h.al = 0x03; |
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| 92 | vm86_callBIOS(0x10,&ir,&or,&sr); |
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| 93 | } |
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| 94 | |||
| 95 | int main (int argc, char *argv[]) |
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| 96 | { |
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| 97 | DWORD sp1, sp2; |
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| 98 | WORD c; |
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| 99 | int i; |
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| 100 | struct multiboot_info *mbi; |
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| 101 | |||
| 102 | sp1 = get_SP(); |
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| 103 | mbi = l1_init(); |
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| 104 | |||
| 105 | if (mbi == NULL) { |
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| 106 | message("Error in LowLevel initialization code...\n"); |
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| 107 | l1_exit(-1); |
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| 108 | } |
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| 109 | |||
| 110 | message("Starting..."); |
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| 111 | c = ll_context_save(); |
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| 112 | message("CX=%x\n",c); |
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| 113 | for (i = 0; i < 0x4F000; i++); |
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| 114 | #ifdef __VM86__ |
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| 115 | vm86_init(); |
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| 116 | BIOSDemo(); |
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| 117 | #else |
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| 118 | XBIOSDemo(); |
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| 119 | #endif |
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| 120 | sp2 = get_SP(); |
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| 121 | message("End reached!\n"); |
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| 122 | message("Actual stack : %lx - ", sp2); |
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| 123 | message("Begin stack : %lx\n", sp1); |
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| 124 | message("Check if same : %s\n",sp1 == sp2 ? "Ok :-)" : "No :-("); |
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| 125 | |||
| 126 | l1_end(); |
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| 127 | return 1; |
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| 128 | } |