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| 24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | # |
27 | # |
| 28 | 28 | ||
| 29 | #include "regname.h" |
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| 30 | - | ||
| 31 | .set noat |
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| 32 | .set noreorder |
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| 33 | .set nomacro |
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| 34 | - | ||
| 35 | .text |
29 | .text |
| 36 | 30 | ||
| 37 | .global halt |
31 | .global halt |
| 38 | .global memcpy |
32 | .global memcpy |
| 39 | .global jump_to_kernel |
33 | .global jump_to_kernel |
| Line 41... | Line 35... | ||
| 41 | halt: |
35 | halt: |
| 42 | b halt |
36 | b halt |
| 43 | nop |
37 | nop |
| 44 | 38 | ||
| 45 | memcpy: |
39 | memcpy: |
| 46 | addiu $v0,$a1,3 |
- | |
| 47 | li $v1,-4 # 0xfffffffffffffffc |
- | |
| 48 | and $v0,$v0,$v1 |
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| 49 | beq $a1,$v0,3f |
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| 50 | move $t0,$a0 |
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| 51 | - | ||
| 52 | 0: |
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| 53 | beq $a2,$zero,2f |
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| 54 | move $a3,$zero |
- | |
| 55 | - | ||
| 56 | 1: |
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| 57 | addu $v0,$a1,$a3 |
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| 58 | lbu $a0,0($v0) |
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| 59 | addu $v1,$t0,$a3 |
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| 60 | addiu $a3,$a3,1 |
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| 61 | bne $a3,$a2,1b |
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| 62 | sb $a0,0($v1) |
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| 63 | - | ||
| 64 | 2: |
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| 65 | jr $ra |
40 | b memcpy |
| 66 | move $v0,$a1 |
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| 67 | - | ||
| 68 | 3: |
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| 69 | addiu $v0,$a0,3 |
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| 70 | and $v0,$v0,$v1 |
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| 71 | bne $a0,$v0,0b |
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| 72 | srl $t1,$a2,2 |
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| 73 | - | ||
| 74 | beq $t1,$zero,5f |
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| 75 | move $a3,$zero |
- | |
| 76 | - | ||
| 77 | move $a3,$zero |
- | |
| 78 | move $a0,$zero |
- | |
| 79 | 4: |
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| 80 | addu $v0,$a1,$a0 |
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| 81 | lw $v1,0($v0) |
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| 82 | addiu $a3,$a3,1 |
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| 83 | addu $v0,$t0,$a0 |
- | |
| 84 | sw $v1,0($v0) |
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| 85 | bne $a3,$t1,4b |
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| 86 | addiu $a0,$a0,4 |
- | |
| 87 | - | ||
| 88 | 5: |
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| 89 | andi $a2,$a2,0x3 |
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| 90 | beq $a2,$zero,2b |
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| 91 | nop |
41 | nop |
| 92 | 42 | ||
| 93 | sll $v0,$a3,2 |
- | |
| 94 | addu $t1,$v0,$t0 |
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| 95 | move $a3,$zero |
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| 96 | addu $t0,$v0,$a1 |
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| 97 | 6: |
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| 98 | addu $v0,$t0,$a3 |
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| 99 | lbu $a0,0($v0) |
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| 100 | addu $v1,$t1,$a3 |
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| 101 | addiu $a3,$a3,1 |
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| 102 | bne $a3,$a2,6b |
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| 103 | sb $a0,0($v1) |
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| 104 | - | ||
| 105 | jr $ra |
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| 106 | move $v0,$a1 |
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| 107 | - | ||
| 108 | jump_to_kernel: |
43 | jump_to_kernel: |
| 109 | # .word 0x39 |
44 | b jump_to_kernel |
| 110 | j $a0 |
- | |
| 111 | nop |
45 | nop |