1 /* -----------------------------------------------------------------------------
3 * (c) The University of Glasgow 2004
5 * Building liveness masks for RET_DYN stack frames.
6 * A few macros that are used in both .cmm and .c sources.
8 * A liveness mask is constructed like so:
10 * R1_PTR & R2_PTR & R3_PTR
12 * -------------------------------------------------------------------------- */
18 #define R1_PTR (NO_PTRS ^ (1<<0))
19 #define R2_PTR (NO_PTRS ^ (1<<1))
20 #define R3_PTR (NO_PTRS ^ (1<<2))
21 #define R4_PTR (NO_PTRS ^ (1<<3))
22 #define R5_PTR (NO_PTRS ^ (1<<4))
23 #define R6_PTR (NO_PTRS ^ (1<<5))
24 #define R7_PTR (NO_PTRS ^ (1<<6))
25 #define R8_PTR (NO_PTRS ^ (1<<7))
27 #define N_NONPTRS(n) ((n)<<16)
28 #define N_PTRS(n) ((n)<<24)
30 #define RET_DYN_NONPTRS(l) ((l)>>16 & 0xff)
31 #define RET_DYN_PTRS(l) ((l)>>24 & 0xff)
32 #define RET_DYN_LIVENESS(l) ((l) & 0xffff)
34 #endif /* LIVENESS_H */