i am learning x86_64 assembly code on yasm and nasm, and i came across with these expressions, and i cant figure out what is happening here, could someone explains me it please?, lets take these snippet as an example:
section .data
word db "Hello, Guys!", 0xa
global _start
section .text
_start:
mov rax, word
...
...
...
AND
section .data
word db "Hello, Guys!", 0xa
global _start
_start:
mov rax, [word]
...
...
...
what are the differences between moving the word variable to rax in brackets and without brackets? i already know that the first one is copying the value from word to rax register, and the one with brackets is the effective address
but i cant understand what really is happenning there, i would be grateful if somebody could explains me this, thanks!, i already read some explanations here on stack overflow but none of them answered my question
This line mov rax, word put content of word in rax register,knowing that word storing address of beginning string "Hello, Guys!"
`mov rax, [word]` put content of address pointed by word