OpenVMS I64 and OpenVMS x86 only.
Associates a named or anonymous linkage with a routine name. When
the compiler sees a CALLS, CALLG, JSB, BSBB, or BSBW instruction
with the routine name as the target, it will use the associated
linkage to decide which registers need to be saved and restored
around the call on Itanium systems and will use the associated
linkage to decide if the Alpha R0/R1 registers need to be refreshed
from the hardware return registers.
Format
.CALL_LINKAGE routine_name [,linkage_name] [,input] [,output]
[,scratch] [,preserve]
Additional Information:
explode
extract