MCPROT_RX          64 lj_mcode.c     #define MCPROT_RX	PAGE_EXECUTE_READ
MCPROT_RX          97 lj_mcode.c     #define MCPROT_RX	(PROT_READ|PROT_EXEC)
MCPROT_RX         130 lj_mcode.c     #define MCPROT_RX	0