previous stack frame
reg save
local vars
-4*(N+9)(r30)
arg word N (opt)
-52(r30)
arg word 4 (optional)
-48(r30)
arg word 3 (required)
-44(r30)
arg word 2 (required)
-40(r30)
arg word 1 (required)
-36(r30)
arg word 0 (required)
-32(r30)
External Data/LT ptr
-28(r30)
External SR4/LT
-24(r30)
External RP
-20(r30)
Current RP
-16(r30)
Static Link
-12(r30)
Cleanup
-8(r30)
Reloc stub RP
-4(r30)
ptr to callee's stack