zombie
015f460d7f
after galaxy brianing i realize i dont need to check the length of the strings because if it compares a character with another from another string and one is a zero we have reached the end of the string and we arnt reading memory that isnt ours
60 lines
692 B
NASM
60 lines
692 B
NASM
extern puts
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section .data
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text db "REEEEEEEEEE",0
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text2 db "REEEEEEErEE",0
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differ db "they differ",0
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notdiffer db "they do not differ",0
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textlength dq 0
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text2length dq 0
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section .text
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global main
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main:
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sub rsp, 8 ;enter
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xor rcx, rcx ;we do this to clear garbage in rcx (i have had garbage in it before)
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_loop:
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;loop tings
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mov r8, text
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add r8, rcx
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mov r9, text2
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add r9, rcx
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mov r10b, [r8]
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mov r11b, [r9]
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cmp r10b, r11b
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jne _differ
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cmp r10b, 0
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je _notdiffer
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cmp r11b, 0
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je _notdiffer
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inc rcx
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jmp _loop
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_differ:
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mov rdi, differ
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cld
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call puts
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jmp _end
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_notdiffer:
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mov rdi, notdiffer
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cld
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call puts
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_end:
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add rsp, 8 ;exit
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ret
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