userland: add assembly support

Move arm assembly cheat here, and start some work on x86 cheat as well.
This commit is contained in:
Ciro Santilli 六四事件 法轮功
2019-03-22 00:00:00 +00:00
parent 4943c9ed2e
commit 287c83f3f9
117 changed files with 3870 additions and 547 deletions

32
userland/arch/arm/nop.S Normal file
View File

@@ -0,0 +1,32 @@
/* https://github.com/cirosantilli/arm-assembly-cheat#nop */
#include "common.h"
ENTRY
/* Disassembles as:
*
* ....
* nop {0}
* ....
*
* TODO what is the `{0}`?
*/
nop
/* Disassembles as:
*
* ....
* nop ; (mov r0, r0)
* ....
*/
mov r0, r0
/* Disassemble as mov. TODO Why not as nop as in `mov r0, r0`?
* Do they have any effect?
*/
mov r1, r1
mov r8, r8
/* And there are other nops as well? Disassembles as `and`. */
and r0, r0, r0
EXIT