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

17
userland/arch/arm/clz.S Normal file
View File

@@ -0,0 +1,17 @@
/* https://github.com/cirosantilli/arm-assembly-cheat#data-processing-instructions */
#include "common.h"
ENTRY
ldr r0, =0x7FFFFFFF
clz r1, r0
ASSERT_EQ(r1, 1)
ldr r0, =0x3FFFFFFF
clz r1, r0
ASSERT_EQ(r1, 2)
ldr r0, =0x1FFFFFFF
clz r1, r0
ASSERT_EQ(r1, 3)
EXIT