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Load/store and branch instructions 55
Figure 3.2: AArch64 general purpose registers (R0-R30) and special registers.
3.2.1 General purpose registers
The general-purpose registers are each used according to specific conventions. These rules
are defined in the application binary interface (ABI). The AArch64 ABI is called AAPCS64.
The difference between callee saved and caller saved registers will also be explained in Sec-
tion 5.4.4.