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@@ -14,13 +14,13 @@ _start: # _start symbol
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# the second cmdline argument of this program and is
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# found at %rsp + 64bit (=8byte) after the pop above.
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xor %rdx, %rdx # Zero %rdx register = no special flags for call
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- syscall # Ask Linux to perform syscall index by rax
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+ syscall # Ask Linux to perform syscall indexed by rax
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test %rax, %rax # Test if return value of syscall in %rax register is
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# zero
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jz exit_zero # If yes, exit zero
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- neg %rax # If not negate error value (linux return negative numbers
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+ neg %rax # If not negate error value (Linux returns negative numbers
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# in %rax for system error (range -4096:-1)
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mov $10, %bl # Set to "10" the 8 low bits od %rbx register
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@@ -31,8 +31,8 @@ _start: # _start symbol
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# If I divide it by "10" the quotient is the first digit
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# and the reminder is the second one (from left to right)
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mov $48, %bl # Put ASCII "0" in 8 low bits of %rbx register
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- add %bl, %al # Add ASSCII "0" one digit number in 0-byte of %rax register
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- add %bl, %ah # Add ASSCII "0" one digit number in 1-byte of %rax register
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+ add %bl, %al # Add ASSCII "0" to the one digit number in 0-byte of %rax register
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+ add %bl, %ah # Add ASSCII "0" to the one digit number in 1-byte of %rax register
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push %ax # Push 16 low bits of %rax register (contains concatened ASCII
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# bits for the two digits of our error code)
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@@ -40,7 +40,7 @@ _start: # _start symbol
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# in stack just after the digits of our error code).
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# (All this is to avoid 2 sys_write calls above)
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- # Write generic part of system error message to stderr
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+ # Write generic string for system error message to stderr
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mov $1, %rax
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mov $1, %rdi
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mov $err_msg, %rsi
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