| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* | 
 | 2 | ------------------------------------------------------------------------------- | 
 | 3 | The macro `BITS64' can be defined to indicate that 64-bit integer types are | 
 | 4 | supported by the compiler. | 
 | 5 | ------------------------------------------------------------------------------- | 
 | 6 | */ | 
 | 7 | #define BITS64 | 
 | 8 |  | 
 | 9 | /* | 
 | 10 | ------------------------------------------------------------------------------- | 
 | 11 | Each of the following `typedef's defines the most convenient type that holds | 
 | 12 | integers of at least as many bits as specified.  For example, `uint8' should | 
 | 13 | be the most convenient type that can hold unsigned integers of as many as | 
 | 14 | 8 bits.  The `flag' type must be able to hold either a 0 or 1.  For most | 
 | 15 | implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed | 
 | 16 | to the same as `int'. | 
 | 17 | ------------------------------------------------------------------------------- | 
 | 18 | */ | 
 | 19 | typedef char flag; | 
 | 20 | typedef unsigned char uint8; | 
 | 21 | typedef signed char int8; | 
 | 22 | typedef int uint16; | 
 | 23 | typedef int int16; | 
 | 24 | typedef unsigned int uint32; | 
 | 25 | typedef signed int int32; | 
 | 26 | #ifdef BITS64 | 
 | 27 | typedef unsigned long long int bits64; | 
 | 28 | typedef signed long long int sbits64; | 
 | 29 | #endif | 
 | 30 |  | 
 | 31 | /* | 
 | 32 | ------------------------------------------------------------------------------- | 
 | 33 | Each of the following `typedef's defines a type that holds integers | 
 | 34 | of _exactly_ the number of bits specified.  For instance, for most | 
 | 35 | implementation of C, `bits16' and `sbits16' should be `typedef'ed to | 
 | 36 | `unsigned short int' and `signed short int' (or `short int'), respectively. | 
 | 37 | ------------------------------------------------------------------------------- | 
 | 38 | */ | 
 | 39 | typedef unsigned char bits8; | 
 | 40 | typedef signed char sbits8; | 
 | 41 | typedef unsigned short int bits16; | 
 | 42 | typedef signed short int sbits16; | 
 | 43 | typedef unsigned int bits32; | 
 | 44 | typedef signed int sbits32; | 
 | 45 | #ifdef BITS64 | 
 | 46 | typedef unsigned long long int uint64; | 
 | 47 | typedef signed long long int int64; | 
 | 48 | #endif | 
 | 49 |  | 
 | 50 | #ifdef BITS64 | 
 | 51 | /* | 
 | 52 | ------------------------------------------------------------------------------- | 
 | 53 | The `LIT64' macro takes as its argument a textual integer literal and if | 
 | 54 | necessary ``marks'' the literal as having a 64-bit integer type.  For | 
 | 55 | example, the Gnu C Compiler (`gcc') requires that 64-bit literals be | 
 | 56 | appended with the letters `LL' standing for `long long', which is `gcc's | 
 | 57 | name for the 64-bit integer type.  Some compilers may allow `LIT64' to be | 
 | 58 | defined as the identity macro:  `#define LIT64( a ) a'. | 
 | 59 | ------------------------------------------------------------------------------- | 
 | 60 | */ | 
 | 61 | #define LIT64( a ) a##LL | 
 | 62 | #endif | 
 | 63 |  | 
 | 64 | /* | 
 | 65 | ------------------------------------------------------------------------------- | 
 | 66 | The macro `INLINE' can be used before functions that should be inlined.  If | 
 | 67 | a compiler does not support explicit inlining, this macro should be defined | 
 | 68 | to be `static'. | 
 | 69 | ------------------------------------------------------------------------------- | 
 | 70 | */ | 
 | 71 | #define INLINE extern __inline__ | 
 | 72 |  | 
 | 73 |  | 
 | 74 | /* For use as a GCC soft-float library we need some special function names. */ | 
 | 75 |  | 
 | 76 | #ifdef __LIBFLOAT__ | 
 | 77 |  | 
 | 78 | /* Some 32-bit ops can be mapped straight across by just changing the name. */ | 
 | 79 | #define float32_add			__addsf3 | 
 | 80 | #define float32_sub			__subsf3 | 
 | 81 | #define float32_mul			__mulsf3 | 
 | 82 | #define float32_div			__divsf3 | 
 | 83 | #define int32_to_float32		__floatsisf | 
 | 84 | #define float32_to_int32_round_to_zero	__fixsfsi | 
 | 85 | #define float32_to_uint32_round_to_zero	__fixunssfsi | 
 | 86 |  | 
 | 87 | /* These ones go through the glue code.  To avoid namespace pollution | 
 | 88 |    we rename the internal functions too.  */ | 
 | 89 | #define float32_eq			___float32_eq | 
 | 90 | #define float32_le			___float32_le | 
 | 91 | #define float32_lt			___float32_lt | 
 | 92 |  | 
 | 93 | /* All the 64-bit ops have to go through the glue, so we pull the same | 
 | 94 |    trick.  */ | 
 | 95 | #define float64_add			___float64_add | 
 | 96 | #define float64_sub			___float64_sub | 
 | 97 | #define float64_mul			___float64_mul | 
 | 98 | #define float64_div			___float64_div | 
 | 99 | #define int32_to_float64		___int32_to_float64 | 
 | 100 | #define float64_to_int32_round_to_zero	___float64_to_int32_round_to_zero | 
 | 101 | #define float64_to_uint32_round_to_zero	___float64_to_uint32_round_to_zero | 
 | 102 | #define float64_to_float32		___float64_to_float32 | 
 | 103 | #define float32_to_float64		___float32_to_float64 | 
 | 104 | #define float64_eq			___float64_eq | 
 | 105 | #define float64_le			___float64_le | 
 | 106 | #define float64_lt			___float64_lt | 
 | 107 |  | 
 | 108 | #if 0 | 
 | 109 | #define float64_add			__adddf3 | 
 | 110 | #define float64_sub			__subdf3 | 
 | 111 | #define float64_mul			__muldf3 | 
 | 112 | #define float64_div			__divdf3 | 
 | 113 | #define int32_to_float64		__floatsidf | 
 | 114 | #define float64_to_int32_round_to_zero	__fixdfsi | 
 | 115 | #define float64_to_uint32_round_to_zero	__fixunsdfsi | 
 | 116 | #define float64_to_float32		__truncdfsf2 | 
 | 117 | #define float32_to_float64		__extendsfdf2 | 
 | 118 | #endif | 
 | 119 |  | 
 | 120 | #endif |