Recursive version of riscv_fib to show off the stack viewer

static/assembly_examples/riscv_fib_recursive.asm

@@ -0,0 +1,55 @@
+fib(int):
+        # Stack variables: | return addr | argument | n - 1 | n - 2 |
+
+        # Save return address and argument
+        sw ra, 0(sp)
+        sw a0, 4(sp)
+
+        ori t0, zero, 0
+        ori t1, zero, 1
+        beq a0, t0, RET_0
+        beq a0, t1, RET_1
+
+        # Recursive call for fib(n-1)
+        addi a0, a0, -1 # Setting arg
+        addi sp, sp, -16 # Making space on the stack
+        jal ra, fib(int)
+        sw a1, 8(sp) # Storing the return value
+        lw a0, 4(sp) # Restoring our original argument
+
+        # Recursive call for fib(n-2)
+        addi a0, a0, -2
+        addi sp, sp, -16
+        jal ra, fib(int)
+        sw a1, 12(sp)
+
+        # Adding together n-1 and n-2 and returning
+        lw t0, 8(sp)
+        lw t1, 12(sp)
+
+        add a1, t0, t1
+        lw ra, 0(sp)
+        addi sp, sp, 16
+        #Pseudo-Instruction: ret
+        jalr x0, x1, 0 #Pseudo-Instruction Translation
+
+
+RET_0:
+        ori a1, zero, 0
+        addi sp, sp, 16
+        #Pseudo-Instruction: ret
+        jalr x0, x1, 0 #Pseudo-Instruction Translation
+RET_1:
+        ori a1, zero, 1
+        addi sp, sp, 16
+        #Pseudo-Instruction: ret
+        jalr x0, x1, 0 #Pseudo-Instruction Translation
+
+main:
+        ori a0, zero, 5
+        addi sp, sp, -16
+        jal ra, fib(int)
+        ori a0, zero, 1
+        ecall
+        ori a0, zero, 0
+        ecall