/* * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands. * See the copyright notice in the ACK home directory, in the file "Copyright". */ /* $Id$ */ #ifndef LANG_NCGG_INSTRUCT_H #define LANG_NCGG_INSTRUCT_H #ifndef _COST_ #include "cost.h" #endif #define AD_RO 01 /* Read only operand */ #define AD_WO 02 /* Write only operand */ #define AD_RW 03 /* Read-write operand */ #define AD_RWMASK 03 /* Mask to select these possiblities */ #define AD_CC 04 /* Condition codes set to this one */ typedef struct operand { struct operand *o_next; short o_setno; short o_adorn; } operand; typedef struct instruction { char *i_name; short i_asname; short i_nops; operand *i_oplist; struct varinfo *i_erases; cost_t i_cost; } instr_t,*instr_p; extern instr_t l_instr[]; /* * The read only information on the operands is not used at the moment. * Predicted future use: * When using :ro data it is possible to use a register in its stead * if it contains the same information and is allowed as an operand * in this place. Too difficult for now. */ #endif /* LANG_NCGG_INSTRUCT_H */