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userland: add assembly support

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Move arm assembly cheat here, and start some work on x86 cheat as well.
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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
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21
userland/arch/aarch64/adr.S Normal file
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@@ -0,0 +1,21 @@
/* https://github.com/cirosantilli/arm-assembly-cheat#adr */
#include "common.h"
.data
data_label:
.word 0x1234678
ENTRY
/* This is not possible in v7 because the label is in another section.
* objdump says that this generates a R_AARCH64_ADR_PRE relocation.
* which looks specific to ADR, and therefore makes it more likely
* that there was no such relocation in v7.
*
* This relocation is particularly important because str does not have a
* pc-relative mode in ARMv8.
*/
adr x0, data_label
ldr x1, =data_label
label:
ASSERT_EQ_REG(x0, x1)
EXIT