1 files changed, 136 insertions, 0 deletions
diff --git a/HW2/CS424_HW2_P2_Carpenter_Adam.asm b/HW2/CS424_HW2_P2_Carpenter_Adam.asm
new file mode 100644
index 0000000..19340a8
--- /dev/null
+++ b/HW2/CS424_HW2_P2_Carpenter_Adam.asm
@@ -0,0 +1,136 @@
+# CSCI 424, Homework 2
+
+	# switch to the Data segment
+	.data
+	# global data is defined here
+	# Don't forget the backslash-n (newline character)
+Homework:
+	.asciiz "CSCI 424 Homework 2\n"
+Name_1:
+	.asciiz "Adam\n"
+Name_2:
+	.asciiz "Carpenter\n"
+
+	# switch to the Text segment
+	.text
+	# the program is defined here
+	.globl main
+main:
+	# Whose program is this?
+	la $a0, Homework
+	jal Print_string
+	la $a0, Name_1
+	jal Print_string
+	la $a0, Name_2
+	jal Print_string
+
+	# int i, n = 2;
+	# for (i = 0; i <= 16; i++)
+	# {
+	# ... calculate n from i
+	# ... print i and n
+	# }
+
+	# register assignments
+	# $s0 i
+	# $s1 n
+	# $a0 argument to Print_integer, Print_string
+	# add to this list if you use any other registers
+	# ---My New Registers---
+	# $s2 bit
+	# $t0 temp (temporary)
+	# ----------------------
+	
+	# initialization
+	li $s1, 2 # n = 2
+
+	# for (i = 0; i <= 16; i++)
+	li $s0, 0 # i = 0
+	bgt $s0, 16, bottom
+top:
+	# calculate n from i
+	# Your part starts here
+	
+	# ------Solution in C code--------
+	# n = 0;
+	# int bit;
+	# for (bit = 0; bit < 32; bit++) {
+	# 	temp = i >> bit;
+	# 	temp = temp & 1;
+	# 	n = n + temp;
+	# }
+	# --------------------------------
+	li $s1, 0 # n = 0
+	li $s2, 0 # bit = 0
+bitloop:
+	srav $t0, $s0, $s2 # temp = i >> bit
+	andi $t0, $t0, 1 # temp = temp & 1
+	add $s1, $s1, $t0 # n = n + temp
+	add $s2, $s2, 1 # bit++
+	blt $s2, 32, bitloop # if bit < 32 goto bitloop
+	
+	# Your part ends here
+
+	# print i and n
+	move $a0, $s0 # i
+	jal Print_integer
+	la $a0, sp # space
+	jal Print_string
+	move $a0, $s1 # n
+	jal Print_integer
+	la $a0, cr # newline
+	jal Print_string
+
+	# for (i = 0; i <= 16; i++)
+	add $s0, $s0, 1 # i++
+	ble $s0, 16, top # i <= 16
+bottom:
+
+	la $a0, done # mark the end of the program
+	jal Print_string
+
+	jal Exit # end the program, no explicit return status
+
+
+	# switch to the Data segment
+	.data
+
+	# global data is defined here
+sp:
+	.asciiz " "
+cr:
+	.asciiz "\n"
+done:
+	.asciiz "All done!\n"
+
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+ 
+# Wrapper functions around some of the system calls
+# See P&H COD, Fig. A.9.1, for the complete list.
+
+	# switch to the Text segment
+	.text
+
+	.globl Print_integer
+Print_integer: # print the integer in register a0
+	addi $v0, $zero, 1
+	syscall
+	jr $ra
+
+	.globl Print_string
+Print_string: # print the string whose starting address is in register a0
+	addi $v0, $zero, 4
+	syscall
+	jr $ra
+
+	.globl Exit
+Exit: # end the program, no explicit return status
+	addi $v0, $zero, 10
+	syscall
+	jr $ra
+
+	.globl Exit2
+Exit2: # end the program, with return status from register a0
+	addi $v0, $zero, 17
+	syscall
+	jr $ra