Add diclaimer of copyright to _osname() manual page.

[unix-history] / gnu / usr.bin / cc / libgcc / _ashldi3.c

extern int target_flags;
 
enum reg_class
{
 NO_REGS,
 AREG, DREG, CREG, BREG,
 Q_REGS,                        
 SIREG, DIREG,
 INDEX_REGS,                    
 GENERAL_REGS,                  
 FP_TOP_REG, FP_SECOND_REG,     
 FLOAT_REGS,
 ALL_REGS, LIM_REG_CLASSES
};
extern enum reg_class regclass_map[17 ];
 
  
extern struct rtx_def *i386_compare_op0, *i386_compare_op1;
extern struct rtx_def *(*i386_compare_gen)(), *(*i386_compare_gen_eq)();
extern char *hi_reg_name[];
extern char *qi_reg_name[];
extern char *qi_high_reg_name[];
 
enum machine_mode {
 VOIDmode , 
 QImode ,               
 HImode , 
 PSImode , 
 SImode , 
 PDImode , 
 DImode , 
 TImode , 
 OImode , 
 QFmode , 
 HFmode , 
 SFmode , 
 DFmode , 
 XFmode ,     
 TFmode , 
 SCmode , 
 DCmode , 
 XCmode , 
 TCmode , 
 CQImode , 
 CHImode , 
 CSImode , 
 CDImode , 
 CTImode , 
 COImode , 
 BLKmode , 
 CCmode , 
 CCFPEQmode ,
MAX_MACHINE_MODE };
extern char *mode_name[];
enum mode_class { MODE_RANDOM, MODE_INT, MODE_FLOAT, MODE_PARTIAL_INT, MODE_CC,
                 MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT, MAX_MODE_CLASS};
extern enum mode_class mode_class[];
extern int mode_size[];
extern int mode_unit_size[];
extern enum machine_mode mode_wider_mode[];
extern enum machine_mode mode_for_size  (unsigned int, enum mode_class, int)  ;
extern enum machine_mode get_best_mode  (int, int, int, enum machine_mode, int)  ;
extern enum machine_mode class_narrowest_mode[];
extern enum machine_mode byte_mode;
extern enum machine_mode word_mode;
typedef int ptrdiff_t;
typedef unsigned int size_t;
typedef short unsigned int wchar_t;
typedef unsigned int UQItype    __attribute__ ((mode (QI)));
typedef          int SItype     __attribute__ ((mode (SI)));
typedef unsigned int USItype    __attribute__ ((mode (SI)));
typedef          int DItype     __attribute__ ((mode (DI)));
typedef unsigned int UDItype    __attribute__ ((mode (DI)));
typedef         float SFtype    __attribute__ ((mode (SF)));
typedef         float DFtype    __attribute__ ((mode (DF)));
typedef int word_type __attribute__ ((mode (SI)));
 struct DIstruct {SItype low, high;};
typedef union
{
 struct DIstruct s;
 DItype ll;
} DIunion;
extern DItype __fixunssfdi (SFtype a);
extern DItype __fixunsdfdi (DFtype a);
DItype
__ashldi3 (u, b)
    DItype u;
    SItype b;
{
 DIunion w;
 SItype bm;
 DIunion uu;
 if (b == 0)
   return u;
 uu.ll = u;
 bm = (sizeof (SItype) * 8 ) - b;
 if (bm <= 0)
   {
     w.s.low = 0;
     w.s.high = (USItype)uu.s.low << -bm;
   }
 else
   {
     USItype carries = (USItype)uu.s.low >> bm;
     w.s.low = (USItype)uu.s.low << b;
     w.s.high = ((USItype)uu.s.high << b) | carries;
   }
 return w.ll;
}