vcs.maemo.org Git - drnoksnes/blob - giz_kgsdkasm.s

   1
   2         .global BlitBufferToScreen
   3
   4 BlitBufferToScreen:
   5     ;@ r0 - Buffer to copy from
   6         ;@ r1 - Buffer to copy to
   7         stmfd sp!,{r4-r12,lr}
   8         mov r12,#240>>1
   9 1:
  10     ;@ first line is perfectly aligned
  11         ldmia r0!,{r2-r11}
  12         stmia r1!,{r2-r11}
  13         ldmia r0!,{r2-r11}
  14         stmia r1!,{r2-r11}
  15         ldmia r0!,{r2-r11}
  16         stmia r1!,{r2-r11}
  17         ldmia r0!,{r2-r11}
  18         stmia r1!,{r2-r11}
  19         ldmia r0!,{r2-r11}
  20         stmia r1!,{r2-r11}
  21         ldmia r0!,{r2-r11}
  22         stmia r1!,{r2-r11}
  23         ldmia r0!,{r2-r11}
  24         stmia r1!,{r2-r11}
  25         ldmia r0!,{r2-r11}
  26         stmia r1!,{r2-r11}
  27
  28         ldmia r0!,{r2-r11}
  29         stmia r1!,{r2-r11}
  30         ldmia r0!,{r2-r11}
  31         stmia r1!,{r2-r11}
  32         ldmia r0!,{r2-r11}
  33         stmia r1!,{r2-r11}
  34         ldmia r0!,{r2-r11}
  35         stmia r1!,{r2-r11}
  36         ldmia r0!,{r2-r11}
  37         stmia r1!,{r2-r11}
  38         ldmia r0!,{r2-r11}
  39         stmia r1!,{r2-r11}
  40         ldmia r0!,{r2-r11}
  41         stmia r1!,{r2-r11}
  42         ldmia r0!,{r2-r11}
  43         stmia r1!,{r2-r11}
  44
  45         add r1,r1,#2
  46
  47         ldmia r0!,{r2-r6}
  48         strh r2,[r1],#2
  49         mov lr,#15
  50 2:
  51         mov r2,r2,lsr#16
  52         orr r2,r2,r3,lsl#16
  53         mov r3,r3,lsr#16
  54         orr r3,r3,r4,lsl#16
  55         mov r4,r4,lsr#16
  56         orr r4,r4,r5,lsl#16
  57         mov r5,r5,lsr#16
  58         orr r5,r5,r6,lsl#16
  59         mov r6,r6,lsr#16
  60         ldmia r0!,{r7-r11}
  61         orr r6,r6,r7,lsl#16
  62         stmia r1!,{r2-r6}
  63         mov r7,r7,lsr#16
  64         orr r7,r7,r8,lsl#16
  65         mov r8,r8,lsr#16
  66         orr r8,r8,r9,lsl#16
  67         mov r9,r9,lsr#16
  68         orr r9,r9,r10,lsl#16
  69         mov r10,r10,lsr#16
  70         orr r10,r10,r11,lsl#16
  71         mov r11,r11,lsr#16
  72         ldmia r0!,{r2-r6}
  73         orr r11,r11,r2,lsl#16
  74         stmia r1!,{r7-r11}
  75         subs lr,lr,#1
  76         bne 2b
  77
  78         mov r2,r2,lsr#16
  79         orr r2,r2,r3,lsl#16
  80         mov r3,r3,lsr#16
  81         orr r3,r3,r4,lsl#16
  82         mov r4,r4,lsr#16
  83         orr r4,r4,r5,lsl#16
  84         mov r5,r5,lsr#16
  85         orr r5,r5,r6,lsl#16
  86         mov r6,r6,lsr#16
  87         ldmia r0!,{r7-r11}
  88         orr r6,r6,r7,lsl#16
  89         stmia r1!,{r2-r6}
  90         mov r7,r7,lsr#16
  91         orr r7,r7,r8,lsl#16
  92         mov r8,r8,lsr#16
  93         orr r8,r8,r9,lsl#16
  94         mov r9,r9,lsr#16
  95         orr r9,r9,r10,lsl#16
  96         mov r10,r10,lsr#16
  97         orr r10,r10,r11,lsl#16
  98         mov r11,r11,lsr#16
  99         stmia r1!,{r7-r11}
 100
 101         subs r12,r12,#1
 102     bne 1b
 103
 104         ldmfd sp!,{r4-r12,pc}
 105
 106
 107