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x86_64/3_homework.asm

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+global _start
+
+; Program that finds the highest number in the byte array declared below
+
+section .data
+  data: db 0, 15, 57, 2, 43, 87, 2
+  dataSize: equ 7
+
+section .bss
+
+section .text
+_start:
+  xor rbx, rbx
+  xor rcx, rcx
+  mov rax, 1 ; iterator value
+  mov cl, byte [data] ; default value for the result
+
+loop_start:
+  cmp rax, dataSize
+  jge loop_end
+
+  mov bl, byte [rax + data] ; load next candidate
+  cmp cl, bl   ; compare to (default) value
+  jge loop_inc ; skip if cl >= bl
+  mov cl, bl   ; set higher value
+
+loop_inc:
+  inc rax
+  jmp loop_start
+
+loop_end:
+  mov rax, 60
+  mov rdi, rcx ; return the highest number as exit code
+  syscall