Kernel/Vane.S

   1 .file "Vane.S"
   2 .code32
   3 .text
   4 .intel_syntax noprefix
   5
   6 .global clear_state,asm_move_cursol,hlt,vane_io_cli,vane_io_sti,write_mem8,VESA_640_480_SET,VESA_Check,VESA_Check,scrn320
   7 .global io_hlt,io_cli,io_sti,io_stihlt,io_in8,io_in16,io_in32,io_out8,io_out16,io_out32,io_load_eflags,io_store_eflags,load_cr0,store_cr0,load_tr
   8
   9 io_hlt:
  10                 HLT
  11                 RET
  12
  13 io_cli:
  14                 CLI
  15                 RET
  16
  17 io_sti:
  18                 STI
  19                 RET
  20
  21 io_stihlt:
  22                 STI
  23                 HLT
  24                 RET
  25
  26 io_in8:
  27                 MOV             EDX,[ESP+4]
  28                 MOV             EAX,0
  29                 IN              AL,DX
  30                 RET
  31
  32 io_in16:
  33                 MOV             EDX,[ESP+4]
  34                 MOV             EAX,0
  35                 IN              AX,DX
  36                 RET
  37
  38 io_in32:
  39                 MOV             EDX,[ESP+4]
  40                 IN              EAX,DX
  41                 RET
  42
  43 io_out8:
  44                 MOV             EDX,[ESP+4]
  45                 MOV             AL,[ESP+8]
  46                 OUT             DX,AL
  47                 RET
  48
  49 io_out16:
  50                 MOV             EDX,[ESP+4]
  51                 MOV             EAX,[ESP+8]
  52                 OUT             DX,AX
  53                 RET
  54
  55 io_out32:
  56                 MOV             EDX,[ESP+4]
  57                 MOV             EAX,[ESP+8]
  58                 OUT             DX,EAX
  59                 RET
  60
  61 io_load_eflags:
  62                 PUSHFD
  63                 POP             EAX
  64                 RET
  65
  66 io_store_eflags:
  67                 MOV             EAX,[ESP+4]
  68                 PUSH    EAX
  69                 POPFD
  70                 RET
  71
  72 load_cr0:
  73                 MOV             EAX,CR0
  74                 RET
  75
  76 store_cr0:
  77                 MOV             EAX,[ESP+4]
  78                 MOV             CR0,EAX
  79                 RET
  80
  81 load_tr:
  82                 LTR             [ESP+4]
  83                 RET
  84
  85
  86 write_mem8:
  87         MOV ECX,[ESP+4]
  88         MOV AL,[ESP+8]
  89         MOV [ECX],AL
  90         RET
  91
  92 scrn320:
  93         MOV AL,0x13
  94         MOV AH,0x00
  95         INT 0x10
  96
  97         RET
  98
  99 VESA_Check:
 100         MOV AX,0x9000
 101         MOV ES,AX
 102         MOV DI,0
 103         MOV AX,0x004F
 104         INT 0x10
 105
 106         CMP AX,0x004F
 107         MOV EAX,0x01
 108         JNE scrn320
 109         MOV EAX,0x00
 110         RET
 111
 112 VESA_640_480_SET:
 113
 114         MOV BX,0x4101
 115         MOV AX,0x4F02
 116         INT 0x10
 117
 118         RET
 119
 120 hlt:
 121         HLT
 122         RET
 123
 124 clear_state:
 125         jmp 0x08:_flush_seg
 126         RET
 127
 128 _flush_seg:
 129         RET
 130
 131 asm_move_cursol:
 132         PUSH BP
 133         PUSH AX
 134
 135         MOV AX,BP
 136         MOV DX,0x03D4
 137         MOV AL,0X0E
 138
 139         OUT DX,AX
 140
 141         POP AX
 142
 143         MOV AH,AL
 144         MOV AL,0x0F
 145
 146         OUT DX,AX
 147
 148         MOV EAX,0
 149
 150         RET
 151
 152 vane_io_cli:
 153         CLI
 154         RET
 155
 156 vane_io_sti:
 157         STI
 158         RET