51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
/* 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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/* number of bits in a word, defined in automatically generated file */
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#include "../share/wordlen.h"
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#if BYTELENGTH==8
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#define DIVBL(a) ((a) >> 3)
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#define MODBL(a) ((a) & 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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#if WORDLENGTH==16
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#define DIVWL(a) ((a) >> 4)
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#define MODWL(a) ((a) & 017)
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#else
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#if WORDLENGTH==32
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#define DIVWL(a) ((a) >> 5)
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#define MODWL(a) ((a) & 037)
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#else
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#define DIVWL(a) (a/WORDLENGTH)
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#define MODWL(a) (a%WORDLENGTH)
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#endif
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#endif
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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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