feat: Initial commit

Temi esame/unamatrice.asm

@@ -0,0 +1,87 @@
+    N       =,              3
+    M       =,              4
+.data
+matriceA:
+.word 0xAB317811, 0xCD514229, 0xEF832040, 0xA1346269
+.word 0xB2178309, 0xC3524578, 0x65702887, 0x59227465
+.word 0x14930352, 0x24157817, 0x39088169, 0x63245986
+matriceB:
+.word 0x39916800, 0x47900160, 0x62270208, 0x87178291
+.word 0xA7674368, 0xB2092278, 0xC3556874, 0xD6402373
+.word 0xE1216451, 0x24329020, 0x51090942, 0x11240007
+matriceC:
+.space N * M * 4
+
+.text
+.globl main
+.ent main
+main:
+    subu    $sp,            $sp,        4
+    sw      $ra,            ($sp)
+    la      $a0,            matriceA
+    la      $a1,            matriceB
+    la      $a2,            matriceC
+    li      $a3,            N
+    li      $t0,            M
+    subu    $sp,            $sp,        4
+    sw      $t0,            ($sp)
+    jal     MediaMatrice
+    addiu   $sp,            $sp,        4
+    lw      $ra,            ($sp)
+    addiu   $sp,            $sp,        4
+    jr      $ra
+.end main
+
+.ent MediaMatrice
+MediaMatrice:
+
+    mult $a3, $t0
+    mflo $a3
+
+    li      $t1,            0
+loop_colonna:
+
+    li      $t2,            0
+loop_riga:
+
+    addu    $t3,            $t1,        $t2
+    sll     $t3,            $t3,        2
+    addu   $t3,            $t3,        $a0
+    lw      $t3,            ($t3)
+
+    addu    $t4,            $t1,        $t2
+    sll     $t4,            $t4,        2
+    addu   $t4,            $t4,        $a1
+    lw      $t4,            ($t4)
+
+    slt     $t5,            $t3,        $0
+    slt     $t6,            $t3,        $0
+    xor     $t5,            $t5,        $t6
+
+    bne     $t5,            $0,         opposto
+    addu    $t4,            $t3,        $t4
+    srl     $t4,            $t4,        1
+
+    li $t5, 0x80000000
+    and $t3, $t3, $t5
+    or $t4, $t4, $t3
+
+    j       salva_media
+opposto:
+    add     $t4,            $t3,        $t4
+    sra     $t4,            $t4,        1
+
+salva_media:
+    addu    $t3,            $t1,        $t2
+    sll     $t3,            $t3,        2
+    addu   $t3,            $t3,        $a2
+    sw      $t4,            ($t3)
+
+    addiu   $t2,            $t2,        1
+    bne     $t2,            $t0,        loop_riga
+
+    addu   $t1,            $t1,        $t0
+    bne     $t1,            $a3,        loop_colonna
+
+    jr      $ra
+.end MediaMatrice