Document x86 assembly examples

2026-10-27 12:41:06 +00:00
parent 724b6988db
commit 695a79e106
2 changed files with 18 additions and 4 deletions
@@ -3,10 +3,14 @@

 _start:
 	# Store system call 1 in the EAX register.
+	# mov = instruction
+	# $1, %eax = operands
+	# %eax = register
 	mov $1, %eax

 	# Store the exit code 0 in the EBX register.
 	mov $0, %ebx

 	# Call interrupt handler 0x80 (128) -- on Linux, this is the kernel.
+	# Kernel will take over and see 1 in %eax, 0 in %ebx.
 	int $0x80