| | 1 | /****************************************************************/ |
| | 2 | /* */ |
| | 3 | /* A collection of routines used in making ACE portable for */ |
| | 4 | /* different computers */ |
| | 5 | /* */ |
| | 6 | /****************************************************************/ |
| | 7 | |
| | 8 | #ifndef __portable_h |
| | 9 | #define __portable_h |
| | 10 | |
| | 11 | #include "os.h" |
| | 12 | |
| | 13 | #ifdef HI_LO_BYTE_ORDER |
| | 14 | |
| | 15 | /* All kinds of inplace swap routines, to reverse from LOHI to HILO byte order */ |
| | 16 | |
| | 17 | #ifdef AMIGA |
| | 18 | |
| | 19 | #if __SASC && __VERSION__>=6 && __REVISION__>=58 |
| | 20 | |
| | 21 | #define WORDswap(n) (*(n) = __builtin_rol(*(n), 8, 1)) |
| | 22 | #define LONGswap(n) ( WORDswap(&((WORD *)(n))[0]),\ |
| | 23 | WORDswap(&((WORD *)(n))[1]),\ |
| | 24 | *(n) = __builtin_rol(*(n), 16, 2) ) |
| | 25 | #else /* __SASC */ |
| | 26 | |
| | 27 | #define EORSWAP |
| | 28 | |
| | 29 | #endif /* !__SASC */ |
| | 30 | |
| | 31 | #endif /* AMIGA */ |
| | 32 | |
| | 33 | |
| | 34 | #ifdef EORSWAP |
| | 35 | |
| | 36 | /* With some compilers and processors these work faster then the |
| | 37 | * regular swap below, for example on a Amiga 68040 using SAS C 6.58. |
| | 38 | * But using builtin rotates works even faster, see above. |
| | 39 | */ |
| | 40 | |
| | 41 | #define WORDswap(n) (((BYTE*)(n))[0] ^= ((BYTE*)(n))[1],\ |
| | 42 | ((BYTE*)(n))[1] ^= ((BYTE*)(n))[0],\ |
| | 43 | ((BYTE*)(n))[0] ^= ((BYTE*)(n))[1]) |
| | 44 | #define LONGswap(n) (((BYTE*)(n))[0] ^= ((BYTE*)(n))[3],\ |
| | 45 | ((BYTE*)(n))[3] ^= ((BYTE*)(n))[0],\ |
| | 46 | ((BYTE*)(n))[0] ^= ((BYTE*)(n))[3],\ |
| | 47 | ((BYTE*)(n))[1] ^= ((BYTE*)(n))[2],\ |
| | 48 | ((BYTE*)(n))[2] ^= ((BYTE*)(n))[1],\ |
| | 49 | ((BYTE*)(n))[1] ^= ((BYTE*)(n))[2]) |
| | 50 | #endif /* EORSWAP */ |
| | 51 | |
| | 52 | #ifndef WORDswap |
| | 53 | |
| | 54 | /* If not yet defined use the standard swaps */ |
| | 55 | |
| | 56 | #define WORDswap(n) (*(n) = (*(n) << 8) | (*(n) >> 8)) |
| | 57 | #define LONGswap(n) ( WORDswap(&((WORD *)(n))[0]),\ |
| | 58 | WORDswap(&((WORD *)(n))[1]),\ |
| | 59 | *(n) = (*(n) >> 16) | (*(n) << 16) ) |
| | 60 | #endif /* WORDSWAP */ |
| | 61 | |
| | 62 | #endif /* HI_LO_BYTE_ORDER */ |
| | 63 | |
| | 64 | |
| | 65 | /* GENERIC: Convert to LONG or WORD from BYTE-Pointer-to-LOHI-byte-order data, |
| | 66 | * without worrying if the bytes are word alined in memory. |
| | 67 | * p is a pointer to char. |
| | 68 | */ |
| | 69 | |
| | 70 | #ifdef HI_LO_BYTE_ORDER |
| | 71 | |
| | 72 | #define BUFP2WORD(p) ((UWORD)*(p)++ | ((*(p)++)<<8)) |
| | 73 | #define BUFP2LONG(p) ((ULONG)*(p)++ | ((*(p)++)<<8) | ((*(p)++)<<16) | ((*(p)++)<<24)) |
| | 74 | |
| | 75 | #define BUF2WORD(p) ((UWORD)*(p) | (*((p)+1)<<8)) |
| | 76 | #define BUF2LONG(p) ((ULONG)*(p) | (*((p)+1)<<8) | (*((p)+2)<<16) | (*((p)+3)<<24)) |
| | 77 | |
| | 78 | #else /* HI_LO_BYTE_ORDER */ |
| | 79 | |
| | 80 | #define BUFP2WORD(p) *(UWORD*)((p+=2)-2) |
| | 81 | #define BUFP2LONG(p) *(ULONG*)((p+=4)-4) |
| | 82 | |
| | 83 | #define BUF2WORD(p) (*(UWORD*)p) |
| | 84 | #define BUF2LONG(p) (*(ULONG*)p) |
| | 85 | |
| | 86 | #endif /* !HI_LO_BYTE_ORDER */ |
| | 87 | |
| | 88 | /* Timestamp macros */ |
| | 89 | |
| | 90 | #define get_tx(m,d,h,n) (((ULONG)m<<21)+((ULONG)d<<16)+((ULONG)h<<11)+(n<<5)) |
| | 91 | #define get_tstamp(y,m,d,h,n,s) ((((ULONG)(y-1980))<<25)+get_tx(m,d,h,n)+(s/2)) |
| | 92 | |
| | 93 | #define ts_year(ts) ((UINT)((ts >> 25) & 0x7f) + 1980) |
| | 94 | #define ts_month(ts) ((UINT)(ts >> 21) & 0x0f) // 1..12 means Jan..Dec |
| | 95 | #define ts_day(ts) ((UINT)(ts >> 16) & 0x1f) // 1..31 means 1st..31st |
| | 96 | #define ts_hour(ts) ((UINT)(ts >> 11) & 0x1f) |
| | 97 | #define ts_min(ts) ((UINT)(ts >> 5) & 0x3f) |
| | 98 | #define ts_sec(ts) ((UINT)((ts & 0x1f) * 2)) |
| | 99 | |
| | 100 | |
| | 101 | #endif /* __portable_h */ |
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