Where is RAX-ARGOFFSET defined? In Linux 3.16, in asm/x86/kernel/entry_64.S, the following line references `RAX-ARGOFFSET` (also see [src]): 424 movq %rax,RAX-ARGOFFSET(%rsp) But I can not find where `RAX-ARGOFFSET` is defined in anywhere in the linux source tree.?

`RAX` and `ARGOFFSET` are defined in `calling.h`, lines 70 and 85 respectively.