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Diffstat (limited to 'include/byte_order_generic_x86.h')
| -rw-r--r-- | include/byte_order_generic_x86.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/include/byte_order_generic_x86.h b/include/byte_order_generic_x86.h new file mode 100644 index 00000000..c4756447 --- /dev/null +++ b/include/byte_order_generic_x86.h @@ -0,0 +1,89 @@ +/* Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved. + Copyright (c) 2020, MariaDB Corporation. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */ + +/* + Optimized function-like macros for the x86 architecture (_WIN32 included). +*/ + +#define sint2korr(A) (*((const int16 *) (A))) +#define sint3korr(A) ((int32) ((((uchar) (A)[2]) & 128) ? \ + (((uint32) 255L << 24) | \ + (((uint32) (uchar) (A)[2]) << 16) |\ + (((uint32) (uchar) (A)[1]) << 8) | \ + ((uint32) (uchar) (A)[0])) : \ + (((uint32) (uchar) (A)[2]) << 16) |\ + (((uint32) (uchar) (A)[1]) << 8) | \ + ((uint32) (uchar) (A)[0]))) +#define sint4korr(A) (*((const long *) (A))) +#define uint2korr(A) (*((const uint16 *) (A))) +#define uint3korr(A) (uint32) (((uint32) ((uchar) (A)[0])) |\ + (((uint32) ((uchar) (A)[1])) << 8) |\ + (((uint32) ((uchar) (A)[2])) << 16)) +#define uint4korr(A) (*((const uint32 *) (A))) +#define uint5korr(A) ((ulonglong)(((uint32) ((uchar) (A)[0])) |\ + (((uint32) ((uchar) (A)[1])) << 8) |\ + (((uint32) ((uchar) (A)[2])) << 16) |\ + (((uint32) ((uchar) (A)[3])) << 24)) |\ + (((ulonglong) ((uchar) (A)[4])) << 32)) +#define uint6korr(A) ((ulonglong)(((uint32) ((uchar) (A)[0])) | \ + (((uint32) ((uchar) (A)[1])) << 8) | \ + (((uint32) ((uchar) (A)[2])) << 16) | \ + (((uint32) ((uchar) (A)[3])) << 24)) | \ + (((ulonglong) ((uchar) (A)[4])) << 32) | \ + (((ulonglong) ((uchar) (A)[5])) << 40)) +#define uint8korr(A) (*((const ulonglong *) (A))) +#define sint8korr(A) (*((const longlong *) (A))) + +#define int2store(T,A) *((uint16*) (T))= (uint16) (A) +#define int3store(T,A) do { *(T)= (uchar) ((A));\ + *(T+1)=(uchar) (((uint) (A) >> 8));\ + *(T+2)=(uchar) (((A) >> 16));\ + } while (0) +#define int4store(T,A) *((long *) (T))= (long) (A) +#define int5store(T,A) do { *(T)= (uchar)((A));\ + *((T)+1)=(uchar) (((A) >> 8));\ + *((T)+2)=(uchar) (((A) >> 16));\ + *((T)+3)=(uchar) (((A) >> 24));\ + *((T)+4)=(uchar) (((A) >> 32));\ + } while(0) +#define int6store(T,A) do { *(T)= (uchar)((A)); \ + *((T)+1)=(uchar) (((A) >> 8)); \ + *((T)+2)=(uchar) (((A) >> 16)); \ + *((T)+3)=(uchar) (((A) >> 24)); \ + *((T)+4)=(uchar) (((A) >> 32)); \ + *((T)+5)=(uchar) (((A) >> 40)); \ + } while(0) +#define int8store(T,A) *((ulonglong *) (T))= (ulonglong) (A) +typedef union { + double v; + long m[2]; +} doubleget_union; +#define doubleget(V,M) \ +do { doubleget_union _tmp; \ + _tmp.m[0] = *((const long*)(M)); \ + _tmp.m[1] = *(((const long*) (M))+1); \ + (V) = _tmp.v; } while(0) +#define doublestore(T,V) \ +do { *((long *) T) = ((const doubleget_union *)&V)->m[0]; \ + *(((long *) T)+1) = ((const doubleget_union *)&V)->m[1]; \ + } while (0) +#define float4get(V,M) \ +do { *((float *) &(V)) = *((const float*) (M)); } while(0) +#define float8get(V,M) doubleget((V),(M)) +#define float4store(V,M) memcpy((uchar*)(V), (uchar*)(&M), sizeof(float)) +#define floatstore(T,V) memcpy((uchar*)(T), (uchar*)(&V), sizeof(float)) +#define floatget(V,M) memcpy((uchar*)(&V),(uchar*) (M), sizeof(float)) +#define float8store(V,M) doublestore((V),(M)) |