.data vmt_BBS: BBS.Start BBS.Sort BBS.Print BBS.Init .text jal Main li $v0 10 syscall Main: sw $fp -8($sp) move $fp $sp subu $sp $sp 8 sw $ra -4($fp) li $a0 12 jal _heapAlloc move $t0 $v0 la $t9 vmt_BBS sw $t9 0($t0) bnez $t0 null1 la $a0 _str0 j _error null1: lw $t1 0($t0) lw $t1 0($t1) move $a0 $t0 li $a1 10 jalr $t1 move $t1 $v0 move $a0 $t1 jal _print lw $ra -4($fp) lw $fp -8($fp) addu $sp $sp 8 jr $ra BBS.Start: sw $fp -8($sp) move $fp $sp subu $sp $sp 12 sw $ra -4($fp) sw $s0 0($sp) move $s0 $a0 move $t0 $a1 lw $t1 0($s0) lw $t1 12($t1) move $a0 $s0 move $a1 $t0 jalr $t1 lw $t1 0($s0) lw $t1 8($t1) move $a0 $s0 jalr $t1 li $a0 99999 jal _print lw $t1 0($s0) lw $t1 4($t1) move $a0 $s0 jalr $t1 lw $t1 0($s0) lw $t1 8($t1) move $a0 $s0 jalr $t1 li $v0 0 lw $s0 0($sp) lw $ra -4($fp) lw $fp -8($fp) addu $sp $sp 12 jr $ra BBS.Sort: sw $fp -8($sp) move $fp $sp subu $sp $sp 8 sw $ra -4($fp) move $t0 $a0 lw $t1 8($t0) subu $t1 $t1 1 li $t2 -1 while1_top: slt $t3 $t2 $t1 beqz $t3 while1_end li $t3 1 while2_top: addu $t4 $t1 1 slt $t4 $t3 $t4 beqz $t4 while2_end subu $t4 $t3 1 lw $t5 4($t0) bnez $t5 null2 la $a0 _str0 j _error null2: lw $t6 0($t5) sltu $t6 $t4 $t6 bnez $t6 bounds1 la $a0 _str1 j _error bounds1: mul $t6 $t4 4 addu $t6 $t6 $t5 lw $t6 4($t6) lw $t5 4($t0) bnez $t5 null3 la $a0 _str0 j _error null3: lw $t4 0($t5) sltu $t4 $t3 $t4 bnez $t4 bounds2 la $a0 _str1 j _error bounds2: mul $t4 $t3 4 addu $t4 $t4 $t5 lw $t4 4($t4) slt $t4 $t4 $t6 beqz $t4 if1_else subu $t4 $t3 1 lw $t6 4($t0) bnez $t6 null4 la $a0 _str0 j _error null4: lw $t5 0($t6) sltu $t5 $t4 $t5 bnez $t5 bounds3 la $a0 _str1 j _error bounds3: mul $t5 $t4 4 addu $t5 $t5 $t6 lw $t5 4($t5) lw $t6 4($t0) bnez $t6 null5 la $a0 _str0 j _error null5: lw $t7 0($t6) sltu $t7 $t4 $t7 bnez $t7 bounds4 la $a0 _str1 j _error bounds4: mul $t7 $t4 4 addu $t7 $t7 $t6 lw $t6 4($t0) bnez $t6 null6 la $a0 _str0 j _error null6: lw $t4 0($t6) sltu $t4 $t3 $t4 bnez $t4 bounds5 la $a0 _str1 j _error bounds5: mul $t4 $t3 4 addu $t4 $t4 $t6 lw $t4 4($t4) sw $t4 4($t7) lw $t4 4($t0) bnez $t4 null7 la $a0 _str0 j _error null7: lw $t7 0($t4) sltu $t7 $t3 $t7 bnez $t7 bounds6 la $a0 _str1 j _error bounds6: mul $t7 $t3 4 addu $t7 $t7 $t4 sw $t5 4($t7) j if1_end if1_else: if1_end: addu $t3 $t3 1 j while2_top while2_end: subu $t1 $t1 1 j while1_top while1_end: li $v0 0 lw $ra -4($fp) lw $fp -8($fp) addu $sp $sp 8 jr $ra BBS.Print: sw $fp -8($sp) move $fp $sp subu $sp $sp 8 sw $ra -4($fp) move $t0 $a0 li $t1 0 while3_top: lw $t2 8($t0) slt $t2 $t1 $t2 beqz $t2 while3_end lw $t2 4($t0) bnez $t2 null8 la $a0 _str0 j _error null8: lw $t3 0($t2) sltu $t3 $t1 $t3 bnez $t3 bounds7 la $a0 _str1 j _error bounds7: mul $t3 $t1 4 addu $t3 $t3 $t2 lw $t3 4($t3) move $a0 $t3 jal _print addu $t1 $t1 1 j while3_top while3_end: li $v0 0 lw $ra -4($fp) lw $fp -8($fp) addu $sp $sp 8 jr $ra BBS.Init: sw $fp -8($sp) move $fp $sp subu $sp $sp 12 sw $ra -4($fp) sw $s0 0($sp) move $s0 $a0 move $t0 $a1 sw $t0 8($s0) move $a0 $t0 jal AllocArray move $t0 $v0 sw $t0 4($s0) lw $t0 4($s0) bnez $t0 null9 la $a0 _str0 j _error null9: lw $t1 0($t0) li $t9 0 sltu $t1 $t9 $t1 bnez $t1 bounds8 la $a0 _str1 j _error bounds8: li $t1 0 addu $t1 $t1 $t0 li $t9 20 sw $t9 4($t1) lw $t1 4($s0) bnez $t1 null10 la $a0 _str0 j _error null10: lw $t0 0($t1) li $t9 1 sltu $t0 $t9 $t0 bnez $t0 bounds9 la $a0 _str1 j _error bounds9: li $t0 4 addu $t0 $t0 $t1 li $t9 7 sw $t9 4($t0) lw $t0 4($s0) bnez $t0 null11 la $a0 _str0 j _error null11: lw $t1 0($t0) li $t9 2 sltu $t1 $t9 $t1 bnez $t1 bounds10 la $a0 _str1 j _error bounds10: li $t1 8 addu $t1 $t1 $t0 li $t9 12 sw $t9 4($t1) lw $t1 4($s0) bnez $t1 null12 la $a0 _str0 j _error null12: lw $t0 0($t1) li $t9 3 sltu $t0 $t9 $t0 bnez $t0 bounds11 la $a0 _str1 j _error bounds11: li $t0 12 addu $t0 $t0 $t1 li $t9 18 sw $t9 4($t0) lw $t0 4($s0) bnez $t0 null13 la $a0 _str0 j _error null13: lw $t1 0($t0) li $t9 4 sltu $t1 $t9 $t1 bnez $t1 bounds12 la $a0 _str1 j _error bounds12: li $t1 16 addu $t1 $t1 $t0 li $t9 2 sw $t9 4($t1) lw $t1 4($s0) bnez $t1 null14 la $a0 _str0 j _error null14: lw $t0 0($t1) li $t9 5 sltu $t0 $t9 $t0 bnez $t0 bounds13 la $a0 _str1 j _error bounds13: li $t0 20 addu $t0 $t0 $t1 li $t9 11 sw $t9 4($t0) lw $t0 4($s0) bnez $t0 null15 la $a0 _str0 j _error null15: lw $t1 0($t0) li $t9 6 sltu $t1 $t9 $t1 bnez $t1 bounds14 la $a0 _str1 j _error bounds14: li $t1 24 addu $t1 $t1 $t0 li $t9 6 sw $t9 4($t1) lw $t1 4($s0) bnez $t1 null16 la $a0 _str0 j _error null16: lw $t0 0($t1) li $t9 7 sltu $t0 $t9 $t0 bnez $t0 bounds15 la $a0 _str1 j _error bounds15: li $t0 28 addu $t0 $t0 $t1 li $t9 9 sw $t9 4($t0) lw $t0 4($s0) bnez $t0 null17 la $a0 _str0 j _error null17: lw $t1 0($t0) li $t9 8 sltu $t1 $t9 $t1 bnez $t1 bounds16 la $a0 _str1 j _error bounds16: li $t1 32 addu $t1 $t1 $t0 li $t9 19 sw $t9 4($t1) lw $t1 4($s0) bnez $t1 null18 la $a0 _str0 j _error null18: lw $t0 0($t1) li $t9 9 sltu $t0 $t9 $t0 bnez $t0 bounds17 la $a0 _str1 j _error bounds17: li $t0 36 addu $t0 $t0 $t1 li $t9 5 sw $t9 4($t0) li $v0 0 lw $s0 0($sp) lw $ra -4($fp) lw $fp -8($fp) addu $sp $sp 12 jr $ra AllocArray: sw $fp -8($sp) move $fp $sp subu $sp $sp 8 sw $ra -4($fp) move $t0 $a0 mul $t1 $t0 4 addu $t1 $t1 4 move $a0 $t1 jal _heapAlloc move $t1 $v0 sw $t0 0($t1) move $v0 $t1 lw $ra -4($fp) lw $fp -8($fp) addu $sp $sp 8 jr $ra _print: li $v0 1 # syscall: print integer syscall la $a0 _newline li $v0 4 # syscall: print string syscall jr $ra _error: li $v0 4 # syscall: print string syscall li $v0 10 # syscall: exit syscall _heapAlloc: li $v0 9 # syscall: sbrk syscall jr $ra .data .align 0 _newline: .asciiz "\n" _str0: .asciiz "null pointer\n" _str1: .asciiz "array index out of bounds\n"