99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
extern int target_flags;
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enum reg_class
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{
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NO_REGS,
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AREG, DREG, CREG, BREG,
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Q_REGS,
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SIREG, DIREG,
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INDEX_REGS,
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GENERAL_REGS,
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FP_TOP_REG, FP_SECOND_REG,
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FLOAT_REGS,
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ALL_REGS, LIM_REG_CLASSES
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};
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extern enum reg_class regclass_map[17 ];
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extern struct rtx_def *i386_compare_op0, *i386_compare_op1;
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extern struct rtx_def *(*i386_compare_gen)(), *(*i386_compare_gen_eq)();
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extern char *hi_reg_name[];
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extern char *qi_reg_name[];
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extern char *qi_high_reg_name[];
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enum machine_mode {
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VOIDmode ,
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QImode ,
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HImode ,
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PSImode ,
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SImode ,
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PDImode ,
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DImode ,
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TImode ,
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OImode ,
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QFmode ,
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HFmode ,
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SFmode ,
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DFmode ,
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XFmode ,
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TFmode ,
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SCmode ,
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DCmode ,
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XCmode ,
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TCmode ,
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CQImode ,
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CHImode ,
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CSImode ,
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CDImode ,
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CTImode ,
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COImode ,
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BLKmode ,
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CCmode ,
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CCFPEQmode ,
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MAX_MACHINE_MODE };
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extern char *mode_name[];
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enum mode_class { MODE_RANDOM, MODE_INT, MODE_FLOAT, MODE_PARTIAL_INT, MODE_CC,
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MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT, MAX_MODE_CLASS};
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extern enum mode_class mode_class[];
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extern int mode_size[];
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extern int mode_unit_size[];
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extern enum machine_mode mode_wider_mode[];
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extern enum machine_mode mode_for_size (unsigned int, enum mode_class, int) ;
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extern enum machine_mode get_best_mode (int, int, int, enum machine_mode, int) ;
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extern enum machine_mode class_narrowest_mode[];
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extern enum machine_mode byte_mode;
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extern enum machine_mode word_mode;
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typedef int ptrdiff_t;
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typedef unsigned int size_t;
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typedef short unsigned int wchar_t;
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typedef unsigned int UQItype __attribute__ ((mode (QI)));
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typedef int SItype __attribute__ ((mode (SI)));
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typedef unsigned int USItype __attribute__ ((mode (SI)));
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typedef int DItype __attribute__ ((mode (DI)));
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typedef unsigned int UDItype __attribute__ ((mode (DI)));
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typedef float SFtype __attribute__ ((mode (SF)));
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typedef float DFtype __attribute__ ((mode (DF)));
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typedef int word_type __attribute__ ((mode (SI)));
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struct DIstruct {SItype low, high;};
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typedef union
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{
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struct DIstruct s;
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DItype ll;
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} DIunion;
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extern DItype __fixunssfdi (SFtype a);
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extern DItype __fixunsdfdi (DFtype a);
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DFtype
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__floatdidf (u)
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DItype u;
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{
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DFtype d;
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SItype negate = 0;
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if (u < 0)
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u = -u, negate = 1;
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d = (USItype) (u >> (sizeof (SItype) * 8 ) );
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d *= (((UDItype) 1) << ((sizeof (SItype) * 8 ) / 2)) ;
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d *= (((UDItype) 1) << ((sizeof (SItype) * 8 ) / 2)) ;
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d += (USItype) (u & ((((UDItype) 1) << (sizeof (SItype) * 8 ) ) - 1));
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return (negate ? -d : d);
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}
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