Help/Support IDA - Trying to Understand

[Joka 4k iPhone X 12.4]

MOV R1, R7 or MOV R7, R1?

 

People are giving me different answers

 

And so it gives the function 803 million or so, what can you use it on?

[Galmin 617 iPhone X 14.4.1]

MOV R1, R7 or MOV R7, R1?

 

People are giving me different answers

 

And so it gives the function 803 million or so, what can you use it on?

MOV R1, R7 

 

R7 is to R1

 

R7 is technically = 803million

 

So all those 803m will go to R1 

 

1st reply 

Updated January 24, 2017 by Galmin

[xiaov 6.6k iPhone 6 8.3]

MOV R1, R7 or MOV R7, R1?

 

People are giving me different answers

 

And so it gives the function 803 million or so, what can you use it on?

give you one example..

Mov r0, #0 , is r0=0 ,

so is 0 move >> to r0...

 

So mov r0, r7,

is r7 mov to r0 ....

Thats all, Thanks.

[Joka 4k iPhone X 12.4]

give you one example..

Mov r0, #0 , is r0=0 ,

so is 0 move >> to r0...

 

So mov r0, r7,

is r7 mov to r0 ....

Thats all, Thanks.

Okay.

 

So is the R7 the important bit? That's what holds the 803 million?

[xiaov 6.6k iPhone 6 8.3]

i prefer billion..T.T

[Joka 4k iPhone X 12.4]

i prefer billion..T.T

So it's MOV R1, R7.. As the R7 is replacing the R1?

[xiaov 6.6k iPhone 6 8.3]

So it's MOV R1, R7.. As the R7 is replacing the R1?

yes... you are correct this time.

[Joka 4k iPhone X 12.4]

yes... you are correct this time.

YAY!

 

BX LR skips to the next function. Shall I add BX LR in?

[xiaov 6.6k iPhone 6 8.3]

YAY!

 

BX LR skips to the next function. Shall I add BX LR in?

if the game didnt crashed, you can use that ...

if crashed then dont use BX LR

[Galmin 617 iPhone X 14.4.1]

Guys keep those challenges up

 

It's very educative

Updated January 24, 2017 by Galmin