From 7c0e11359348b99c5c05351effb41198a9fd01db Mon Sep 17 00:00:00 2001
From: Imbus <>
Date: Fri, 5 Apr 2024 18:27:41 +0200
Subject: [PATCH] Semi-working output, still no exall

---
 end.s  | 19 +++++++++++++++++++
 main.s | 54 +++++++++++++++++++++++++-----------------------------
 2 files changed, 44 insertions(+), 29 deletions(-)
 create mode 100644 end.s

diff --git a/end.s b/end.s
new file mode 100644
index 0000000..07b6e36
--- /dev/null
+++ b/end.s
@@ -0,0 +1,19 @@
+# Just print the word 'exit' to the address 0x10000000
+.globl end
+end:
+    addi a0, x0, 0x65 # 'e'
+    li a1, 0x10000000
+    sb a0, (a1)
+
+    addi a0, x0, 0x78 # 'x'
+    sb a0, (a1)
+
+    addi a0, x0, 0x69 # 'i'
+    sb a0, (a1)
+
+    addi a0, x0, 0x74 # 't'
+    sb a0, (a1)
+
+    addi a0, x0, 0x0A
+    sb a0, (a1) # '\n'
+    ret
\ No newline at end of file
diff --git a/main.s b/main.s
index 70bdd83..cbdd0b4 100644
--- a/main.s
+++ b/main.s
@@ -5,11 +5,19 @@
     num2: .word 7     # Second number
     result: .word 0   # Variable to store the result
     msg: .ascii "Hello, World!\n"
+    array: .space 100 # 100 bytes of space
 
 # Main program entry point
+.globl start
 .text
-.global _start
-.align 4
+start:
+    call test_routine
+    call hello_manual
+    # call hello # This doesn't work
+    call end
+    ebreak
+
+# Arbitrary test routine
 test_routine:
     la a0, num1    # Load the address of num1 into register a6
     li a1, 10      # Load the value 10 into register a5
@@ -17,31 +25,8 @@ test_routine:
     sw a1, 0(a0)    # Store the value in memory
     ret
 
-_start:
-    call h2
-    call test_routine
-    call hello
-
-    # Load the first number into register t0
-    lw t0, num1
-
-    # Load the second number into register t1
-    lw t1, num2
-
-    # Add the two numbers and store the result in register t2
-    add t2, t0, t1
-
-    # Store the result in memory
-    la t3, result
-    sw t2, 0(t3)
-
-    # Call _hello
-    la a0, result
-
-    # End program
-    ecall
-
-h2:
+# Prints "hello" manually
+hello_manual:	
     addi a0, x0, 0x68
 	li a1, 0x10000000
 	sb a0, (a1) # 'h'
@@ -57,8 +42,12 @@ h2:
 
 	addi a0, x0, 0x6F
 	sb a0, (a1) # 'o'
+
+    addi a0, x0, 0x0A
+    sb a0, (a1) # '\n'
     ret
 
+# Is supposed to print "Hello, World!\n" to stdout via ecall, but doesn't work
 hello:
     # Write the string "Hello, World!\n" to stdout
     la a0, msg              # Load the address of the string into a0
@@ -68,6 +57,13 @@ hello:
     ecall                   # Make the system call to write
     ret                     # Return from the function
 
-# To avoid the program from exiting
-loop: j loop
+# Another routine, presumably written for the rars emulator?
+hello2:
+    li a0, 0x1
+    la a1, msg
+    li a2, 13
+    li a7, 64
+    ecall
 
+# To avoid the program from exiting
+loop: j loop
\ No newline at end of file