Data commit

Task/User-input-Text/AArch64-Assembly/user-input-text.aarch64

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+//Consts
+.equ BUFFERSIZE,   100
+.equ STDIN,  0                // linux input console
+.equ STDOUT, 1                // linux output console
+.equ READ,   63
+.equ WRITE,  64
+.equ EXIT,   93
+
+.data
+enterText:		.asciz "Enter text: "
+carriageReturn:  	.asciz "\n"
+
+//Read Buffer
+.bss
+buffer:    .skip    BUFFERSIZE
+
+.text
+.global _start
+
+quadEnterText:        	.quad  enterText
+quadBuffer:          	.quad  buffer
+quadCarriageReturn:	.quad  carriageReturn
+
+writeMessage:
+    mov x2,0                   // reset size counter to 0
+
+checkSize:                     // get size of input
+    ldrb w1,[x0,x2]            // load char with offset of x2
+    add x2,x2,#1               // add 1 char read legnth
+    cbz w1,output              // if char found
+    b checkSize                // loop
+
+output:
+    mov x1,x0                  // move string address into system call func parm
+    mov x0,STDOUT
+    mov x8,WRITE
+    svc 0                      // trigger system write
+    ret
+
+
+_start:
+    //Output enter text
+    ldr x0,quadEnterText	// load enter message
+    bl writeMessage		// output enter message
+
+    //Read User Input
+    mov x0,STDIN           	// linux input console
+    ldr x1,quadBuffer      	// load buffer address
+    mov x2,BUFFERSIZE      	// load buffer size
+    mov x8,READ            	// request to read data
+    svc 0                  	// trigger system read input
+
+    //Output User Message
+    mov x2, #0			// prep end of string
+    ldr x1,quadBuffer      	// load buffer address
+    strb w2,[x1, x0]        	// store x2 0 byte at the end of input string, offset x0
+    ldr x0,quadBuffer      	// load buffer address
+    bl writeMessage
+
+    //Output newline
+    ldr x0,quadCarriageReturn
+    bl writeMessage
+
+    //End Program
+    mov x0, #0             	// return code
+    mov x8, #EXIT          	// request to exit program
+    svc 0                 	// trigger end of program