| 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 |