added some comments
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1 changed files with 6 additions and 18 deletions
24
case.asm
24
case.asm
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@ -7,26 +7,24 @@ section .text
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global main
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global main
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main:
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main:
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sub rsp, 8
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sub rsp, 8 ;enter
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xor rcx, rcx
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xor rcx, rcx ;we do this to clear rcx incase it had garbage in it before
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_loop:
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_loop:
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;do loop things
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;do loop things
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mov r9, text
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mov r9, text
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add r9, rcx
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add r9, rcx
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;do text checks and modify the text here
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mov r8b, [r9] ;this block here makes sure that our character is a capital letter and if its not a capital letter do nothing and return
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mov r8b, [r9]
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cmp r8b, 90
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cmp r8b, 90
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ja _endloop
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ja _endloop
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cmp r8b, 65
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cmp r8b, 65
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jb _endloop
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jb _endloop
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add r8b, 32
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add r8b, 32 ;make the letter capital
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mov [r9], r8b
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mov [r9], r8b
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_endloop:
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_endloop:
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@ -36,20 +34,10 @@ _endloop:
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jle _loop
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jle _loop
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_print:
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mov rdi, text
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mov rdi, text
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cld
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cld
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call puts ;this is the put s way of printing a string
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call puts ;this is the puts way of printing a string
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_end:
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_end:
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add rsp, 8
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add rsp, 8 ;exit
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ret
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ret
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; mov rax, 60 ; exit
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; mov edi, 1 ; error 1 dont need the exit anymore beacue libc or somthing
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; syscall
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