Initial commit - building

.vscode/launch.json

@@ -0,0 +1,28 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "type": "java",
+      "name": "Main",
+      "request": "launch",
+      "mainClass": "main.Main",
+      "projectName": "p5-compiler_25e45799"
+    },
+    {
+      "type": "java",
+      "name": "Main",
+      "request": "launch",
+      "mainClass": "Main",
+      "projectName": "p5-compiler_25e45799"
+    },
+    {
+      "type": "java",
+      "name": "Current File",
+      "request": "launch",
+      "mainClass": "${file}"
+    }
+  ]
+}

.vscode/settings.json

@@ -0,0 +1,8 @@
+{
+  "java.project.referencedLibraries": [
+    "lib/**/*.jar",
+    "antlr-4.9.1-complete.jar"
+  ],
+  "rpc.enabled": false,
+  "java.debug.settings.onBuildFailureProceed": true
+}

data/examples/test1.asm

@@ -0,0 +1,35 @@
+# All program code is placed after the
+# .text assembler directive
+.text
+
+# Declare main as a global function
+.globl	main
+
+j main
+
+# code for main
+main:
+# Entering a new scope.
+# Symbols in symbol table:
+#  println
+#  return
+# Update the stack pointer.
+addi $sp $sp -0
+# println
+la $a0 datalabel0
+li $v0 4
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# Exiting scope.
+addi $sp $sp 0
+li $v0 10
+syscall
+
+# All memory structures are placed after the
+# .data assembler directive
+.data
+
+newline:	.asciiz	"\n"
+datalabel0:	.asciiz	"Hello world"

data/examples/test10.asm

@@ -0,0 +1,434 @@
+# All program code is placed after the
+# .text assembler directive
+.text
+
+# Declare main as a global function
+.globl	main
+
+j main
+
+# code for fib
+fib:
+# Entering a new scope.
+# Symbols in symbol table:
+#  println
+#  i
+#  return
+# Update the stack pointer.
+addi $sp $sp -0
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t1 -4
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Load the value of i.
+lw $t0 0($t1)
+li $t1 0
+sub $t0 $t0 $t1
+bne $t0 $zero datalabel0
+li $t0 1
+sw $t0 -8($sp)
+jr $ra
+j datalabel1
+datalabel0:
+datalabel1:
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t1 -4
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Load the value of i.
+lw $t0 0($t1)
+li $t1 1
+sub $t0 $t0 $t1
+bne $t0 $zero datalabel2
+li $t0 1
+sw $t0 -8($sp)
+jr $ra
+j datalabel3
+datalabel2:
+datalabel3:
+# Calling function fib
+# Save $ra to a register
+move $t0 $ra
+# Save $t0-9 registers
+sw $t0 -12($sp)
+# Evaluate parameters and save to stack
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t2 -4
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Load the value of i.
+lw $t1 0($t2)
+li $t2 1
+sub $t1 $t1 $t2
+sw $t1 -16($sp)
+# Update the stack pointer
+add $sp $sp -12
+# Call the function
+jal fib
+# Restore the stack pointer
+add $sp $sp 12
+# Restore $t0-9 registers
+lw $t0 -12($sp)
+# Restore $ra
+move $ra $t0
+# Get return value off stack
+lw $t0 -20($sp)
+# Calling function fib
+# Save $ra to a register
+move $t1 $ra
+# Save $t0-9 registers
+sw $t0 -12($sp)
+sw $t1 -16($sp)
+# Evaluate parameters and save to stack
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t3 -4
+# Add the stack pointer address to the offset.
+add $t3 $t3 $sp
+# Load the value of i.
+lw $t2 0($t3)
+li $t3 2
+sub $t2 $t2 $t3
+sw $t2 -20($sp)
+# Update the stack pointer
+add $sp $sp -16
+# Call the function
+jal fib
+# Restore the stack pointer
+add $sp $sp 16
+# Restore $t0-9 registers
+lw $t0 -12($sp)
+lw $t1 -16($sp)
+# Restore $ra
+move $ra $t1
+# Get return value off stack
+lw $t1 -24($sp)
+add $t0 $t0 $t1
+sw $t0 -8($sp)
+jr $ra
+# Exiting scope.
+addi $sp $sp 0
+jr $ra
+
+# code for main
+main:
+# Entering a new scope.
+# Symbols in symbol table:
+#  println
+#  return
+# Update the stack pointer.
+addi $sp $sp -0
+# println
+la $a0 datalabel4
+li $v0 4
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+# Calling function fib
+# Save $ra to a register
+move $t0 $ra
+# Save $t0-9 registers
+sw $t0 -4($sp)
+# Evaluate parameters and save to stack
+li $t1 0
+sw $t1 -8($sp)
+# Update the stack pointer
+add $sp $sp -4
+# Call the function
+jal fib
+# Restore the stack pointer
+add $sp $sp 4
+# Restore $t0-9 registers
+lw $t0 -4($sp)
+# Restore $ra
+move $ra $t0
+# Get return value off stack
+lw $t0 -12($sp)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+# Calling function fib
+# Save $ra to a register
+move $t0 $ra
+# Save $t0-9 registers
+sw $t0 -4($sp)
+# Evaluate parameters and save to stack
+li $t1 1
+sw $t1 -8($sp)
+# Update the stack pointer
+add $sp $sp -4
+# Call the function
+jal fib
+# Restore the stack pointer
+add $sp $sp 4
+# Restore $t0-9 registers
+lw $t0 -4($sp)
+# Restore $ra
+move $ra $t0
+# Get return value off stack
+lw $t0 -12($sp)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+# Calling function fib
+# Save $ra to a register
+move $t0 $ra
+# Save $t0-9 registers
+sw $t0 -4($sp)
+# Evaluate parameters and save to stack
+li $t1 2
+sw $t1 -8($sp)
+# Update the stack pointer
+add $sp $sp -4
+# Call the function
+jal fib
+# Restore the stack pointer
+add $sp $sp 4
+# Restore $t0-9 registers
+lw $t0 -4($sp)
+# Restore $ra
+move $ra $t0
+# Get return value off stack
+lw $t0 -12($sp)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+# Calling function fib
+# Save $ra to a register
+move $t0 $ra
+# Save $t0-9 registers
+sw $t0 -4($sp)
+# Evaluate parameters and save to stack
+li $t1 3
+sw $t1 -8($sp)
+# Update the stack pointer
+add $sp $sp -4
+# Call the function
+jal fib
+# Restore the stack pointer
+add $sp $sp 4
+# Restore $t0-9 registers
+lw $t0 -4($sp)
+# Restore $ra
+move $ra $t0
+# Get return value off stack
+lw $t0 -12($sp)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+# Calling function fib
+# Save $ra to a register
+move $t0 $ra
+# Save $t0-9 registers
+sw $t0 -4($sp)
+# Evaluate parameters and save to stack
+li $t1 4
+sw $t1 -8($sp)
+# Update the stack pointer
+add $sp $sp -4
+# Call the function
+jal fib
+# Restore the stack pointer
+add $sp $sp 4
+# Restore $t0-9 registers
+lw $t0 -4($sp)
+# Restore $ra
+move $ra $t0
+# Get return value off stack
+lw $t0 -12($sp)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+# Calling function fib
+# Save $ra to a register
+move $t0 $ra
+# Save $t0-9 registers
+sw $t0 -4($sp)
+# Evaluate parameters and save to stack
+li $t1 5
+sw $t1 -8($sp)
+# Update the stack pointer
+add $sp $sp -4
+# Call the function
+jal fib
+# Restore the stack pointer
+add $sp $sp 4
+# Restore $t0-9 registers
+lw $t0 -4($sp)
+# Restore $ra
+move $ra $t0
+# Get return value off stack
+lw $t0 -12($sp)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+# Calling function fib
+# Save $ra to a register
+move $t0 $ra
+# Save $t0-9 registers
+sw $t0 -4($sp)
+# Evaluate parameters and save to stack
+li $t1 6
+sw $t1 -8($sp)
+# Update the stack pointer
+add $sp $sp -4
+# Call the function
+jal fib
+# Restore the stack pointer
+add $sp $sp 4
+# Restore $t0-9 registers
+lw $t0 -4($sp)
+# Restore $ra
+move $ra $t0
+# Get return value off stack
+lw $t0 -12($sp)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+# Calling function fib
+# Save $ra to a register
+move $t0 $ra
+# Save $t0-9 registers
+sw $t0 -4($sp)
+# Evaluate parameters and save to stack
+li $t1 7
+sw $t1 -8($sp)
+# Update the stack pointer
+add $sp $sp -4
+# Call the function
+jal fib
+# Restore the stack pointer
+add $sp $sp 4
+# Restore $t0-9 registers
+lw $t0 -4($sp)
+# Restore $ra
+move $ra $t0
+# Get return value off stack
+lw $t0 -12($sp)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+# Calling function fib
+# Save $ra to a register
+move $t0 $ra
+# Save $t0-9 registers
+sw $t0 -4($sp)
+# Evaluate parameters and save to stack
+li $t1 8
+sw $t1 -8($sp)
+# Update the stack pointer
+add $sp $sp -4
+# Call the function
+jal fib
+# Restore the stack pointer
+add $sp $sp 4
+# Restore $t0-9 registers
+lw $t0 -4($sp)
+# Restore $ra
+move $ra $t0
+# Get return value off stack
+lw $t0 -12($sp)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+# Calling function fib
+# Save $ra to a register
+move $t0 $ra
+# Save $t0-9 registers
+sw $t0 -4($sp)
+# Evaluate parameters and save to stack
+li $t1 9
+sw $t1 -8($sp)
+# Update the stack pointer
+add $sp $sp -4
+# Call the function
+jal fib
+# Restore the stack pointer
+add $sp $sp 4
+# Restore $t0-9 registers
+lw $t0 -4($sp)
+# Restore $ra
+move $ra $t0
+# Get return value off stack
+lw $t0 -12($sp)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+# Calling function fib
+# Save $ra to a register
+move $t0 $ra
+# Save $t0-9 registers
+sw $t0 -4($sp)
+# Evaluate parameters and save to stack
+li $t1 10
+sw $t1 -8($sp)
+# Update the stack pointer
+add $sp $sp -4
+# Call the function
+jal fib
+# Restore the stack pointer
+add $sp $sp 4
+# Restore $t0-9 registers
+lw $t0 -4($sp)
+# Restore $ra
+move $ra $t0
+# Get return value off stack
+lw $t0 -12($sp)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# Exiting scope.
+addi $sp $sp 0
+li $v0 10
+syscall
+
+# All memory structures are placed after the
+# .data assembler directive
+.data
+
+newline:	.asciiz	"\n"
+datalabel4:	.asciiz	"This program prints the first 11 numbers of the Fibonacci sequence"

data/examples/test11.asm

@@ -0,0 +1,92 @@
+# All program code is placed after the
+# .text assembler directive
+.text
+
+# Declare main as a global function
+.globl	main
+
+j main
+
+# code for main
+main:
+# Entering a new scope.
+# Symbols in symbol table:
+#  println
+#  i
+#  return
+# Update the stack pointer.
+addi $sp $sp -0
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t0 -4
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Compute rhs for assignment =
+li $t1 0
+# complete assignment statement with store
+sw $t1 0($t0)
+# println
+la $a0 datalabel0
+li $v0 4
+syscall
+la $a0 newline
+li $v0 4
+syscall
+datalabel1:
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t1 -4
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Load the value of i.
+lw $t0 0($t1)
+li $t1 10
+slt $t0 $t0 $t1
+subi $t0 $t0 1
+bne $t0 $zero datalabel2
+# Entering a new scope.
+# Symbols in symbol table:
+#  println
+# Update the stack pointer.
+addi $sp $sp -4
+# println
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t1 0
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Load the value of i.
+lw $t0 0($t1)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t0 0
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Compute rhs for assignment =
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t2 0
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Load the value of i.
+lw $t1 0($t2)
+li $t2 1
+add $t1 $t1 $t2
+# complete assignment statement with store
+sw $t1 0($t0)
+# Exiting scope.
+addi $sp $sp 4
+j datalabel1
+datalabel2:
+# Exiting scope.
+addi $sp $sp 0
+li $v0 10
+syscall
+
+# All memory structures are placed after the
+# .data assembler directive
+.data
+
+newline:	.asciiz	"\n"
+datalabel0:	.asciiz	"This program prints 0 through 9."

data/examples/test12.asm

@@ -0,0 +1,213 @@
+# All program code is placed after the
+# .text assembler directive
+.text
+
+# Declare main as a global function
+.globl	main
+
+j main
+
+# code for fib
+fib:
+# Entering a new scope.
+# Symbols in symbol table:
+#  println
+#  i
+#  return
+# Update the stack pointer.
+addi $sp $sp -0
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t1 -4
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Load the value of i.
+lw $t0 0($t1)
+li $t1 0
+sub $t0 $t0 $t1
+bne $t0 $zero datalabel0
+li $t0 1
+sw $t0 -8($sp)
+jr $ra
+j datalabel1
+datalabel0:
+datalabel1:
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t1 -4
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Load the value of i.
+lw $t0 0($t1)
+li $t1 1
+sub $t0 $t0 $t1
+bne $t0 $zero datalabel2
+li $t0 1
+sw $t0 -8($sp)
+jr $ra
+j datalabel3
+datalabel2:
+datalabel3:
+# Calling function fib
+# Save $ra to a register
+move $t0 $ra
+# Save $t0-9 registers
+sw $t0 -12($sp)
+# Evaluate parameters and save to stack
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t2 -4
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Load the value of i.
+lw $t1 0($t2)
+li $t2 1
+sub $t1 $t1 $t2
+sw $t1 -16($sp)
+# Update the stack pointer
+add $sp $sp -12
+# Call the function
+jal fib
+# Restore the stack pointer
+add $sp $sp 12
+# Restore $t0-9 registers
+lw $t0 -12($sp)
+# Restore $ra
+move $ra $t0
+# Get return value off stack
+lw $t0 -20($sp)
+# Calling function fib
+# Save $ra to a register
+move $t1 $ra
+# Save $t0-9 registers
+sw $t0 -12($sp)
+sw $t1 -16($sp)
+# Evaluate parameters and save to stack
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t3 -4
+# Add the stack pointer address to the offset.
+add $t3 $t3 $sp
+# Load the value of i.
+lw $t2 0($t3)
+li $t3 2
+sub $t2 $t2 $t3
+sw $t2 -20($sp)
+# Update the stack pointer
+add $sp $sp -16
+# Call the function
+jal fib
+# Restore the stack pointer
+add $sp $sp 16
+# Restore $t0-9 registers
+lw $t0 -12($sp)
+lw $t1 -16($sp)
+# Restore $ra
+move $ra $t1
+# Get return value off stack
+lw $t1 -24($sp)
+add $t0 $t0 $t1
+sw $t0 -8($sp)
+jr $ra
+# Exiting scope.
+addi $sp $sp 0
+jr $ra
+
+# code for main
+main:
+# Entering a new scope.
+# Symbols in symbol table:
+#  println
+#  i
+#  return
+# Update the stack pointer.
+addi $sp $sp -0
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t0 -4
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Compute rhs for assignment =
+li $t1 0
+# complete assignment statement with store
+sw $t1 0($t0)
+# println
+la $a0 datalabel4
+li $v0 4
+syscall
+la $a0 newline
+li $v0 4
+syscall
+datalabel5:
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t1 -4
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Load the value of i.
+lw $t0 0($t1)
+li $t1 12
+slt $t0 $t0 $t1
+subi $t0 $t0 1
+bne $t0 $zero datalabel6
+# Entering a new scope.
+# Symbols in symbol table:
+#  println
+# Update the stack pointer.
+addi $sp $sp -4
+# println
+# Calling function fib
+# Save $ra to a register
+move $t0 $ra
+# Save $t0-9 registers
+sw $t0 -4($sp)
+# Evaluate parameters and save to stack
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t2 0
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Load the value of i.
+lw $t1 0($t2)
+sw $t1 -8($sp)
+# Update the stack pointer
+add $sp $sp -4
+# Call the function
+jal fib
+# Restore the stack pointer
+add $sp $sp 4
+# Restore $t0-9 registers
+lw $t0 -4($sp)
+# Restore $ra
+move $ra $t0
+# Get return value off stack
+lw $t0 -12($sp)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t0 0
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Compute rhs for assignment =
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t2 0
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Load the value of i.
+lw $t1 0($t2)
+li $t2 1
+add $t1 $t1 $t2
+# complete assignment statement with store
+sw $t1 0($t0)
+# Exiting scope.
+addi $sp $sp 4
+j datalabel5
+datalabel6:
+# Exiting scope.
+addi $sp $sp 0
+li $v0 10
+syscall
+
+# All memory structures are placed after the
+# .data assembler directive
+.data
+
+newline:	.asciiz	"\n"
+datalabel4:	.asciiz	"This program prints the first 12 numbers of the Fibonacci sequence."

data/examples/test13.asm

@@ -0,0 +1,296 @@
+# All program code is placed after the
+# .text assembler directive
+.text
+
+# Declare main as a global function
+.globl	main
+
+j main
+
+# code for main
+main:
+# Entering a new scope.
+# Symbols in symbol table:
+#  a
+#  println
+#  i
+#  return
+# Update the stack pointer.
+addi $sp $sp -0
+# println
+la $a0 datalabel0
+li $v0 4
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# Get a's offset from $sp from the symbol table and initialize a's address with it. We'll add $sp later.
+li $t0 -40
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Evaluate the index expression and store in a register.
+li $t1 0
+# Multiply the index by -4.
+li $t2 4
+mul $t1 $t1 $t2
+# Add the index offset to the offset.
+add $t0 $t0 $t1
+# Compute rhs for assignment =
+li $t1 0
+# complete assignment statement with store
+sw $t1 0($t0)
+# println
+# Get a's offset from $sp from the symbol table and initialize a's address with it. We'll add $sp later.
+li $t1 -40
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Evaluate the index expression and store in a register.
+li $t2 0
+# Multiply the index by -4.
+li $t3 4
+mul $t2 $t2 $t3
+# Add the index offset to the offset.
+add $t1 $t1 $t2
+# Load the value of a.
+lw $t0 0($t1)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# Get a's offset from $sp from the symbol table and initialize a's address with it. We'll add $sp later.
+li $t0 -40
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Evaluate the index expression and store in a register.
+li $t1 2
+# Multiply the index by -4.
+li $t2 4
+mul $t1 $t1 $t2
+# Add the index offset to the offset.
+add $t0 $t0 $t1
+# Compute rhs for assignment =
+li $t1 2
+# complete assignment statement with store
+sw $t1 0($t0)
+# println
+# Get a's offset from $sp from the symbol table and initialize a's address with it. We'll add $sp later.
+li $t1 -40
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Evaluate the index expression and store in a register.
+li $t2 2
+# Multiply the index by -4.
+li $t3 4
+mul $t2 $t2 $t3
+# Add the index offset to the offset.
+add $t1 $t1 $t2
+# Load the value of a.
+lw $t0 0($t1)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t0 -44
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Compute rhs for assignment =
+li $t1 2
+# complete assignment statement with store
+sw $t1 0($t0)
+# Get a's offset from $sp from the symbol table and initialize a's address with it. We'll add $sp later.
+li $t0 -40
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Evaluate the index expression and store in a register.
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t2 -44
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Load the value of i.
+lw $t1 0($t2)
+# Multiply the index by -4.
+li $t2 4
+mul $t1 $t1 $t2
+# Add the index offset to the offset.
+add $t0 $t0 $t1
+# Compute rhs for assignment =
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t2 -44
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Load the value of i.
+lw $t1 0($t2)
+# complete assignment statement with store
+sw $t1 0($t0)
+# println
+# Get a's offset from $sp from the symbol table and initialize a's address with it. We'll add $sp later.
+li $t1 -40
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Evaluate the index expression and store in a register.
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t3 -44
+# Add the stack pointer address to the offset.
+add $t3 $t3 $sp
+# Load the value of i.
+lw $t2 0($t3)
+# Multiply the index by -4.
+li $t3 4
+mul $t2 $t2 $t3
+# Add the index offset to the offset.
+add $t1 $t1 $t2
+# Load the value of a.
+lw $t0 0($t1)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t0 -44
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Compute rhs for assignment =
+li $t1 0
+# complete assignment statement with store
+sw $t1 0($t0)
+datalabel1:
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t1 -44
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Load the value of i.
+lw $t0 0($t1)
+li $t1 10
+slt $t0 $t0 $t1
+subi $t0 $t0 1
+bne $t0 $zero datalabel2
+# Entering a new scope.
+# Symbols in symbol table:
+#  println
+# Update the stack pointer.
+addi $sp $sp -44
+# Get a's offset from $sp from the symbol table and initialize a's address with it. We'll add $sp later.
+li $t0 4
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Evaluate the index expression and store in a register.
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t2 0
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Load the value of i.
+lw $t1 0($t2)
+# Multiply the index by -4.
+li $t2 4
+mul $t1 $t1 $t2
+# Add the index offset to the offset.
+add $t0 $t0 $t1
+# Compute rhs for assignment =
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t2 0
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Load the value of i.
+lw $t1 0($t2)
+# complete assignment statement with store
+sw $t1 0($t0)
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t0 0
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Compute rhs for assignment =
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t2 0
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Load the value of i.
+lw $t1 0($t2)
+li $t2 1
+add $t1 $t1 $t2
+# complete assignment statement with store
+sw $t1 0($t0)
+# Exiting scope.
+addi $sp $sp 44
+j datalabel1
+datalabel2:
+# println
+# Get a's offset from $sp from the symbol table and initialize a's address with it. We'll add $sp later.
+li $t1 -40
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Evaluate the index expression and store in a register.
+li $t2 3
+# Multiply the index by -4.
+li $t3 4
+mul $t2 $t2 $t3
+# Add the index offset to the offset.
+add $t1 $t1 $t2
+# Load the value of a.
+lw $t0 0($t1)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+# Get a's offset from $sp from the symbol table and initialize a's address with it. We'll add $sp later.
+li $t1 -40
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Evaluate the index expression and store in a register.
+li $t2 6
+# Multiply the index by -4.
+li $t3 4
+mul $t2 $t2 $t3
+# Add the index offset to the offset.
+add $t1 $t1 $t2
+# Load the value of a.
+lw $t0 0($t1)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+# Get a's offset from $sp from the symbol table and initialize a's address with it. We'll add $sp later.
+li $t1 -40
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Evaluate the index expression and store in a register.
+li $t2 6
+# Multiply the index by -4.
+li $t3 4
+mul $t2 $t2 $t3
+# Add the index offset to the offset.
+add $t1 $t1 $t2
+# Load the value of a.
+lw $t0 0($t1)
+li $t1 6
+mult $t0 $t1
+mflo $t0
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# Exiting scope.
+addi $sp $sp 0
+li $v0 10
+syscall
+
+# All memory structures are placed after the
+# .data assembler directive
+.data
+
+newline:	.asciiz	"\n"
+datalabel0:	.asciiz	"This should print 0, 2, 2, 3, 6 and 36"

data/examples/test14.asm

@@ -0,0 +1,289 @@
+# All program code is placed after the
+# .text assembler directive
+.text
+
+# Declare main as a global function
+.globl	main
+
+j main
+
+# code for sum
+sum:
+# Entering a new scope.
+# Symbols in symbol table:
+#  println
+#  x
+#  i
+#  sum
+#  n
+#  return
+# Update the stack pointer.
+addi $sp $sp -0
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t0 -16
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Compute rhs for assignment =
+li $t1 0
+# complete assignment statement with store
+sw $t1 0($t0)
+# Get sum's offset from $sp from the symbol table and initialize sum's address with it. We'll add $sp later.
+li $t0 -20
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Compute rhs for assignment =
+li $t1 0
+# complete assignment statement with store
+sw $t1 0($t0)
+datalabel0:
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t1 -16
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Load the value of i.
+lw $t0 0($t1)
+# Get n's offset from $sp from the symbol table and initialize n's address with it. We'll add $sp later.
+li $t2 -8
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Load the value of n.
+lw $t1 0($t2)
+slt $t0 $t0 $t1
+subi $t0 $t0 1
+bne $t0 $zero datalabel1
+# Entering a new scope.
+# Symbols in symbol table:
+#  println
+# Update the stack pointer.
+addi $sp $sp -20
+# Get sum's offset from $sp from the symbol table and initialize sum's address with it. We'll add $sp later.
+li $t0 0
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Compute rhs for assignment =
+# Get sum's offset from $sp from the symbol table and initialize sum's address with it. We'll add $sp later.
+li $t2 0
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Load the value of sum.
+lw $t1 0($t2)
+# Get x's offset from $sp from the symbol table and initialize x's address with it. We'll add $sp later.
+li $t3 16
+# Add the stack pointer address to the offset.
+add $t3 $t3 $sp
+# Get x's base address from the stack.
+lw $t3 0($t3)
+# Evaluate the index expression and store in a register.
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t5 4
+# Add the stack pointer address to the offset.
+add $t5 $t5 $sp
+# Load the value of i.
+lw $t4 0($t5)
+# Multiply the index by -4.
+li $t5 4
+mul $t4 $t4 $t5
+# Add the index offset to the offset.
+add $t3 $t3 $t4
+# Load the value of x.
+lw $t2 0($t3)
+add $t1 $t1 $t2
+# complete assignment statement with store
+sw $t1 0($t0)
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t0 4
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Compute rhs for assignment =
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t2 4
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Load the value of i.
+lw $t1 0($t2)
+li $t2 1
+add $t1 $t1 $t2
+# complete assignment statement with store
+sw $t1 0($t0)
+# Exiting scope.
+addi $sp $sp 20
+j datalabel0
+datalabel1:
+# Get sum's offset from $sp from the symbol table and initialize sum's address with it. We'll add $sp later.
+li $t1 -20
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Load the value of sum.
+lw $t0 0($t1)
+sw $t0 -12($sp)
+jr $ra
+# Exiting scope.
+addi $sp $sp 0
+jr $ra
+
+# code for main
+main:
+# Entering a new scope.
+# Symbols in symbol table:
+#  a
+#  println
+#  i
+#  return
+# Update the stack pointer.
+addi $sp $sp -0
+# println
+la $a0 datalabel2
+li $v0 4
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t0 -44
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Compute rhs for assignment =
+li $t1 0
+# complete assignment statement with store
+sw $t1 0($t0)
+datalabel3:
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t1 -44
+# Add the stack pointer address to the offset.
+add $t1 $t1 $sp
+# Load the value of i.
+lw $t0 0($t1)
+li $t1 10
+slt $t0 $t0 $t1
+subi $t0 $t0 1
+bne $t0 $zero datalabel4
+# Entering a new scope.
+# Symbols in symbol table:
+#  println
+# Update the stack pointer.
+addi $sp $sp -44
+# Get a's offset from $sp from the symbol table and initialize a's address with it. We'll add $sp later.
+li $t0 4
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Evaluate the index expression and store in a register.
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t2 0
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Load the value of i.
+lw $t1 0($t2)
+# Multiply the index by -4.
+li $t2 4
+mul $t1 $t1 $t2
+# Add the index offset to the offset.
+add $t0 $t0 $t1
+# Compute rhs for assignment =
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t2 0
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Load the value of i.
+lw $t1 0($t2)
+# complete assignment statement with store
+sw $t1 0($t0)
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t0 0
+# Add the stack pointer address to the offset.
+add $t0 $t0 $sp
+# Compute rhs for assignment =
+# Get i's offset from $sp from the symbol table and initialize i's address with it. We'll add $sp later.
+li $t2 0
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Load the value of i.
+lw $t1 0($t2)
+li $t2 1
+add $t1 $t1 $t2
+# complete assignment statement with store
+sw $t1 0($t0)
+# Exiting scope.
+addi $sp $sp 44
+j datalabel3
+datalabel4:
+# println
+# Calling function sum
+# Save $ra to a register
+move $t0 $ra
+# Save $t0-9 registers
+sw $t0 -48($sp)
+# Evaluate parameters and save to stack
+# Get a's offset from $sp from the symbol table and initialize a's address with it. We'll add $sp later.
+li $t2 -40
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Put the address of the array into the register.
+# Use the address of a.
+move $t1 $t2
+sw $t1 -52($sp)
+li $t1 4
+sw $t1 -56($sp)
+# Update the stack pointer
+add $sp $sp -48
+# Call the function
+jal sum
+# Restore the stack pointer
+add $sp $sp 48
+# Restore $t0-9 registers
+lw $t0 -48($sp)
+# Restore $ra
+move $ra $t0
+# Get return value off stack
+lw $t0 -60($sp)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+# Calling function sum
+# Save $ra to a register
+move $t0 $ra
+# Save $t0-9 registers
+sw $t0 -48($sp)
+# Evaluate parameters and save to stack
+# Get a's offset from $sp from the symbol table and initialize a's address with it. We'll add $sp later.
+li $t2 -40
+# Add the stack pointer address to the offset.
+add $t2 $t2 $sp
+# Put the address of the array into the register.
+# Use the address of a.
+move $t1 $t2
+sw $t1 -52($sp)
+li $t1 8
+sw $t1 -56($sp)
+# Update the stack pointer
+add $sp $sp -48
+# Call the function
+jal sum
+# Restore the stack pointer
+add $sp $sp 48
+# Restore $t0-9 registers
+lw $t0 -48($sp)
+# Restore $ra
+move $ra $t0
+# Get return value off stack
+lw $t0 -60($sp)
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# Exiting scope.
+addi $sp $sp 0
+li $v0 10
+syscall
+
+# All memory structures are placed after the
+# .data assembler directive
+.data
+
+newline:	.asciiz	"\n"
+datalabel2:	.asciiz	"This should print 6 and 28"

data/examples/test2.asm

@@ -0,0 +1,89 @@
+# All program code is placed after the
+# .text assembler directive
+.text
+
+# Declare main as a global function
+.globl	main
+
+j main
+
+# code for main
+main:
+# Entering a new scope.
+# Symbols in symbol table:
+#  println
+#  return
+# Update the stack pointer.
+addi $sp $sp -0
+# println
+la $a0 datalabel0
+li $v0 4
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+li $t0 7
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+li $t0 3
+li $t1 4
+add $t0 $t0 $t1
+move $a0 $t0
+li $v0 1
+syscall
+la $a0 newline
+li $v0 4
+syscall
+# println
+li $t0 14
+li $t1 2
+div $t0 $t1