52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
/* $Header$ */
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/*
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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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/* G L O B A L V A R I A B L E S */
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/* sizes of TARGET machine */
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extern int ps; /* pointer size */
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extern int ws; /* word size */
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/* sizes of SOURCE machine (i.e. machine on which
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* the optimizer runs)
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*/
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/* number of bits in a byte */
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#define BYTELENGTH 8
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#if BYTELENGTH==8
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#define DIVBL(a) ((a) >> 3)
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#define MODBL(a) ((a) & (int)07)
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#else
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#define DIVBL(a) (a/BYTELENGTH)
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#define MODBL(a) (a%BYTELENGTH)
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#endif
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#define WORDLENGTH (sizeof(int)*BYTELENGTH)
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#define DIVWL(a) (WORDLENGTH==16 ? \
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((a)>>4) : \
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(WORDLENGTH==32 ? \
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((a)>>5) : \
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((a)/(8*(int)sizeof(int)))))
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#define MODWL(a) (WORDLENGTH==16 ? \
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((a)&(int)017) : \
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(WORDLENGTH==32 ? \
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((a)&(int)037) : \
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((a)%(8*(int)sizeof(int)))))
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#define UNKNOWN_SIZE (-1)
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extern proc_p curproc; /* current procedure */
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extern char *filename; /* name of current input file */
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extern lset mesregs; /* set of MES ms_reg pseudos */
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extern short time_space_ratio; /* 0 if optimizing for space only,
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* 100 if optimizing for time only,
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* else something 'in between'.
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*/
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