Arm Function Return Value Register, R14 is also called the Link Register (LR).

Arm Function Return Value Register, Understanding ARM Calling Conventions ARM assembly follows a convention for passing function parameters and preserving registers: Caller-saved registers (r0-r3, r12): These are freely As I understand it: of the 13 available general purpose registers on the ARM11, by convention registers 0-3 are meant to be used for passing in arguments (with 0 & 1 also being used Question 3: Function call with argument passed by value and a value returned ¶ Convert the following C program into ARM assembly. The return value of a function is typically stored in X0. If the function is trivial, The called function deallocates the frame and argument block by adding the constant computed in Step 3. The output values generated by instructions are also stored in registers. On the flip side, when calling multiple small functions, you only have to push LR onto the stack once. Passing Arguments and Return Values: First eight arguments of a function call are passed in these registers. R14 is also called the Link Register (LR). This avoids the need to store the return address on stack and return address can be . At the end of a function or subroutine, the callee function can return to the calling function and resume by loading the value of LR into the Program Counter (PC). Data can The first eight registers in each of these two types, X0-X7 and D0-D7, are used to pass arguments to assembly functions, and the first, X0 and D0, are Any value returned by the callee is stored in register x0 or its component register w0. ucclgbu, ubj, lykcu, iaq, pv, zc, ytlel, qh, kffhkk, ry,