.ifndef __BACKUP__
.set __BACKUP__, 1

.macro __backup_next n, args:vararg
.ifnb \args
	__backup\n \args
.endif
.endm

.macro __backup4 arg:req, args:vararg
	pushq \arg
.ifnb \args
.error "backup: too many arguments"
.endif
.endm

.macro __backup3 arg:req, args:vararg
	pushq \arg
	__backup_next 4, \args
.endm

.macro __backup2 arg:req, args:vararg
	pushq \arg
	__backup_next 3, \args
.endm

.macro backup arg:req, args:vararg
	pushq \arg
	__backup_next 2, \args
.endm

.endif