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