cc.h

00001 /* cc.h */
00002 /*
00003 Copyright (C) 2012 ARM Limited.
00004 
00005 Permission is hereby granted, free of charge, to any person obtaining a copy of
00006 this software and associated documentation files (the "Software"), to deal in
00007 the Software without restriction, including without limitation the rights to
00008 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
00009 of the Software, and to permit persons to whom the Software is furnished to do
00010 so, subject to the following conditions:
00011 
00012 The above copyright notice and this permission notice shall be included in all
00013 copies or substantial portions of the Software.
00014 
00015 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00016 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00017 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00018 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00019 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00020 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
00021 SOFTWARE.
00022 */
00023 
00024 #ifndef CC_H_
00025 #define CC_H_
00026 
00027 #include <stdint.h>
00028 
00029 //This file was written according to http://lwip.wikia.com/wiki/Porting_for_an_OS and http://git.savannah.gnu.org/cgit/lwip.git/tree/doc/sys_arch.txt
00030 
00031 //Data types
00032 typedef uint8_t u8_t;
00033 typedef uint16_t u16_t;
00034 typedef uint32_t u32_t;
00035 
00036 typedef int8_t s8_t;
00037 typedef int16_t s16_t;
00038 typedef int32_t s32_t;
00039 
00040 typedef uint32_t mem_ptr_t;
00041 
00042 //Debug
00043 //__DEBUG__ must be defined to enable the macros
00044 #ifndef __DEBUG__
00045 #define __DEBUG__ 4 //Maximum verbosity
00046 #endif
00047 #ifndef __MODULE__
00048 #define __MODULE__ "LwIP"
00049 #endif
00050 #include "dbg.h"
00051 
00052 #define LWIP_PLATFORM_DIAG(...)  DBG(__VA_ARGS__)
00053 //#define LWIP_PLATFORM_ASSERT(x) do{ ERR(x); } while(0)
00054 #define LWIP_PLATFORM_ASSERT(...) ERR(__VA_ARGS__)
00055 
00056 //Printf formatters
00057 #define U16_F "hu"
00058 #define S16_F "d"
00059 #define X16_F "hx"
00060 #define U32_F "u"
00061 #define S32_F "d"
00062 #define X32_F "x"
00063 #define SZT_F "uz"
00064 
00065 //Endianness
00066 #define BYTE_ORDER LITTLE_ENDIAN
00067 
00068 #define LWIP_PLATFORM_BYTESWAP 1
00069 #define LWIP_PLATFORM_HTONS(x) ( (((u16_t)(x))>>8) | (((x)&0xFF)<<8) )
00070 #define LWIP_PLATFORM_HTONL(x) ( (((u32_t)(x))>>24) | (((x)&0xFF0000)>>8) \
00071                                | (((x)&0xFF00)<<8) | (((x)&0xFF)<<24) )
00072                                
00073 //Checksums
00074 /*
00075 IP protocols use checksums (see RFC 1071). LwIP gives you a choice of 3 algorithms:
00076 load byte by byte, construct 16 bits word and add: not efficient for most platforms
00077 load first byte if odd address, loop processing 16 bits words, add last byte.
00078 load first byte and word if not 4 byte aligned, loop processing 32 bits words, add last word/byte.
00079 */
00080 #define LWIP_CHKSUM_ALGORITHM 3
00081 
00082 //Structure packing 
00083 #if defined ( __CC_ARM )
00084 
00085 //This will work with ARMCC
00086 #define PACK_STRUCT_FIELD(x) x//__packed x
00087 #define PACK_STRUCT_STRUCT
00088 #define PACK_STRUCT_BEGIN __packed
00089 #define PACK_STRUCT_END
00090 
00091 #elif   defined ( __GNUC__ )
00092 
00093 //This will work with GCC and ARMCC in GCC-compatible mode
00094 #define PACK_STRUCT_FIELD(x) x __attribute__((packed))
00095 #define PACK_STRUCT_STRUCT __attribute__((packed))
00096 #define PACK_STRUCT_BEGIN
00097 #define PACK_STRUCT_END
00098 
00099 #else
00100 #error "This toolchain is not currently supported for LwIP support (you can FIXME)"
00101 #endif
00102 
00103 #define LWIP_PROVIDE_ERRNO
00104 
00105 #define SYS_LIGHTWEIGHT_PROT 1
00106 /*
00107 sys.h will provide default definitions (as of version 1.3.0) of these macros as:
00108 #define SYS_ARCH_DECL_PROTECT(lev) sys_prot_t lev
00109 #define SYS_ARCH_PROTECT(lev) lev = sys_arch_protect()
00110 #define SYS_ARCH_UNPROTECT(lev) sys_arch_unprotect(lev)
00111 */
00112 
00113 #endif /* CC_H_ */