What does the ADR instruction do in Arm Architecture.
For example: ADR R0, R0, R1
please compare the ADR and the LDR instructions, and feel free to use your examples for any of the questions. Thank you very much.
ADR is used to produce position independent code . why because assembler generates an instruction that adds or subtracts a value to the PC .
ADR always assembles to one instruction. to assemble wider range of effective addresses use ADRL instruction .
in above example , the instruction ADR Ro , R1 loads an address into the Ro. in general ADR is replaced by add or sub instruction involving the contents of PC.
LDR(load immediate) obtains immediate data by putting the data in the program code and uses a PC relative load to get the data into register . i.e., it loads register with immediate value .
ADR tries to generate the immediate value by adding or subtracting instructions .
What does the ADR instruction do in Arm Architecture. For example: ADR R0, R0, R1 please...
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