added diff but currently it only compares length

This commit is contained in:
zombie maniac 2021-09-18 06:06:05 -04:00
parent a55d2bd12c
commit 7fecbb5170
2 changed files with 55 additions and 0 deletions

View file

@ -20,3 +20,4 @@ add_link_options(-fno-pie -m64 -no-pie -pedantic-errors)
add_executable(length length.asm)
add_executable(yes yes.asm)
add_executable(case case.asm)
add_executable(diff diff.asm)

54
diff.asm Normal file
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@ -0,0 +1,54 @@
extern puts
%include "../inc/length_func.inc"
section .data
text db "rEE",0
text2 db "REEE",0
differ db "they differ",0
notdiffer db "they do not differ",0
textlength dq 0
text2length dq 0
section .text
global main
main:
sub rsp, 8 ;enter
;below we are getting the length of each string
;we do this because we dont want to compare with memory that isnt ours
mov r8, text
call length_func
mov [textlength], rax
mov r8, text2
call length_func
mov [text2length], rax
mov r8, [textlength]
mov r9, [text2length]
cmp r8, r9
jne _differ
_differ:
mov rdi, differ
cld
call puts
jmp _end
_notdiffer:
mov rdi, notdiffer
cld
call puts
_end:
add rsp, 8 ;exit
ret