Some assembly instructions specific to arm64

adrp Instructions （address page）

It's an address read instruction , Is used to calculate the specified data address to the current PC The relative offset of the value .
Here is its specific usage and explanation

Get a size of 4KB The base address of the page , And there are global variables in the page g The address of ;ADRP That is to say, the base address of the page is stored in the register X6 in ;
ADD The command will calculate g The address of ,X6+#[email protected],#[email protected] It's an offset ; So you get g The address of X6;

• Memory read and write instructions （ldr、ldur、ldp, str、stur、stp）

STR、STP、STUR Instructions for storing data （ notes ： With ST The beginning is represented as a storage instruction ）
LDR、LDP、LDUR In order to get the data instruction （ notes ： With LD The first expression is to take out the data ）
The following is the specific instructions and assembly code analysis
STR Instructions ： Read the data out of the register , Store in memory .
STUR Instructions ： Read out the negative data in the register , Put it in memory .
STP Instructions ： Represents the stack instruction .

LDR Instructions ： Taking data out of memory , Put it in the register .
LDUR Instructions ： Take out the negative data in memory , And stored in a register .
LDP Instructions ： Represents the stack instruction