AMD64 registers

Register names, numbers and purposes on the AMD64 architecture running Linux.
For more information see AMD64 ABI.

Description RAX RBX RCX RDX RSI RDI RBP RSP R8 R9 R10 R11 R12 R13 R14 R15 RIP/RA
Dwarf2 number032145678910111213141516
Preserved across function callsYesYesYesYesYesYesYesN/A
Function parameter4th3rd2nd1st5th6thN/A
Return register1st2ndN/A
Kernel parameter#NR3rd2nd1st5th6th4thN/A
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