Diff: pal/Source/PAL-Impl/Services-API/pal_macros.h

Revision:

0:a7a43371b306

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pal/Source/PAL-Impl/Services-API/pal_macros.h	Sun May 14 18:40:18 2017 +0000
@@ -0,0 +1,131 @@
+/*
+* Copyright (c) 2016 ARM Limited. All rights reserved.
+* SPDX-License-Identifier: Apache-2.0
+* Licensed under the Apache License, Version 2.0 (the License); you may
+* not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an AS IS BASIS, WITHOUT
+* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+#ifndef _PAL_MACROS_H
+#define _PAL_MACROS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "pal_errors.h"
+// PAL success value
+#define PAL_SUCCESS 0
+
+// maximum integer types
+#define PAL_MAX_UINT8       0xFFU
+#define PAL_MAX_UINT16      0xFFFFU
+#define PAL_MAX_UINT32      0xFFFFFFFFUL
+#define PAL_MAX_INT32       0x7FFFFFFFL
+#define PAL_MIN_INT32       0x80000000L
+#define PAL_MAX_UINT64      0xFFFFFFFFFFFFFFFFULL
+#define PAL_MAX_INT64       0x7FFFFFFFFFFFFFFFLL
+
+// useful macros
+
+#define PAL_MAX(a,b)            ((a) > (b) ? (a) : (b))
+
+#define PAL_MIN(a,b)            ((a) < (b) ? (a) : (b))
+
+#define PAL_DIVIDE_ROUND_UP(num, divider)           (((num) + (divider) - 1) / (divider))
+
+#if PAL_COMPILATION_ENDIANITY == 1
+#define BIG__ENDIAN 1
+#elif PAL_COMPILATION_ENDIANITY == 0
+#define LITTLE__ENDIAN 1
+#else 
+#error neither BIG__ENDIAN nor LITTLE__ENDIAN defined, cannot compile
+#endif
+
+// endianity macros
+#ifdef LITTLE__ENDIAN
+
+#define PAL_HTONS(x) (((((unsigned short)(x)) >> 8) & 0xff) | \
+            ((((unsigned short)(x)) & 0xff) << 8))
+#define PAL_NTOHS(x) (((((unsigned short)(x)) >> 8) & 0xff) | \
+            ((((unsigned short)(x)) & 0xff) << 8) )
+#define PAL_HTONL(x) ((((x)>>24) & 0xffL) | (((x)>>8) & 0xff00L) | \
+            (((x)<<8) & 0xff0000L) | (((x)<<24) & 0xff000000L))
+#define PAL_NTOHL(x) ((((x)>>24) & 0xffL) | (((x)>>8) & 0xff00L) | \
+            (((x)<<8) & 0xff0000L) | (((x)<<24) & 0xff000000L))
+
+#elif defined(BIG__ENDIAN)
+
+#define PAL_HTONS(x) (x)
+#define PAL_NTOHS(x) (x)
+#define PAL_HTONL(x) (x)
+#define PAL_NTOHL(x) (x)
+#else
+#error neither BIG__ENDIAN nor LITTLE__ENDIAN defined, cannot compile
+#endif
+
+
+
+#define PAL_INVERSE_UINT16_BYTES( val ) \
+    ( ((val) << 8) | (((val) & 0x0000FF00) >> 8))
+
+#define PAL_INVERSE_UINT32_BYTES( val ) \
+   ( ((val) >> 24) | (((val) & 0x00FF0000) >> 8) | (((val) & 0x0000FF00) << 8) | (((val) & 0x000000FF) << 24) )
+
+#define PAL_INVERSE_UINT64_BYTES( val ) \
+    ((PAL_INVERSE_UINT32_BYTES( ((val >> 16) >> 16)) &0xffffffff)  | ((((uint64_t)PAL_INVERSE_UINT32_BYTES(val & 0xffffffff))<<16)<<16)) 
+
+/* Set of Macros similar to the HTONS/L, NTOHS/L ones but converting to/from little endian instead of big endian*/
+#ifdef LITTLE__ENDIAN 
+#define PAL_LITTLE_ENDIAN_TO_HOST_16BIT(x) (x)
+#define PAL_LITTLE_ENDIAN_TO_HOST_32BIT(x) (x)
+#define PAL_LITTLE_ENDIAN_TO_HOST_64BIT(x) (x)
+#define PAL_HOST_TO_LITTLE_ENDIAN_16BIT(x) (x)
+#define PAL_HOST_TO_LITTLE_ENDIAN_32BIT(x) (x)
+#define PAL_HOST_TO_LITTLE_ENDIAN_64BIT(x) (x)
+
+
+#elif defined(BIG__ENDIAN)
+#define PAL_LITTLE_ENDIAN_TO_HOST_16BIT(x) (PAL_INVERSE_UINT16_BYTES(((uint16_t)x)))
+#define PAL_LITTLE_ENDIAN_TO_HOST_32BIT(x) (PAL_INVERSE_UINT32_BYTES(((uint32_t)x)))
+#define PAL_LITTLE_ENDIAN_TO_HOST_64BIT(x) (PAL_INVERSE_UINT64_BYTES(((uint64_t)x)))
+#define PAL_HOST_TO_LITTLE_ENDIAN_16BIT(x) (PAL_INVERSE_UINT16_BYTES(((uint16_t)x)))
+#define PAL_HOST_TO_LITTLE_ENDIAN_32BIT(x) (PAL_INVERSE_UINT32_BYTES(((uint32_t)x)))
+#define PAL_HOST_TO_LITTLE_ENDIAN_64BIT(x) (PAL_INVERSE_UINT64_BYTES(((uint64_t)x)))
+
+#else
+#error neither BIG__ENDIAN nor LITTLE__ENDIAN defined, cannot compile
+#endif
+
+
+#define PAL_MODULE_INIT(INIT) INIT= 1
+#define PAL_MODULE_DEINIT(INIT) INIT= 0
+
+#ifdef DEBUG
+#include "pal.h"
+#define DEBUG_PRINT(ARGS...) PAL_PRINTF(ARGS)
+
+#define DEBUG_PRINT(ARGS...) PAL_PRINTF(ARGS)
+#define PAL_MODULE_IS_INIT(INIT) if(!INIT) return PAL_ERR_NOT_INITIALIZED;
+
+
+#else
+#define PAL_MODULE_IS_INIT(INIT)
+
+#define DEBUG_PRINT(ARGS...)
+
+#endif //DEBUG
+
+#ifdef __cplusplus
+}
+#endif
+#endif //_PAL_MACROS_H