Diff: arch/cc.h

Revision:

0:8e01dca41002

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/arch/cc.h	Thu May 24 15:53:48 2012 +0000
@@ -0,0 +1,121 @@
+/* cc.h */
+/*
+Copyright (C) 2012 ARM Limited.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef CC_H_
+#define CC_H_
+
+#include <stdint.h>
+
+//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
+
+//Data types
+typedef uint8_t u8_t;
+typedef uint16_t u16_t;
+typedef uint32_t u32_t;
+
+typedef int8_t s8_t;
+typedef int16_t s16_t;
+typedef int32_t s32_t;
+
+typedef uint32_t mem_ptr_t;
+
+//Debug
+//__DEBUG__ must be defined to enable the macros
+#ifndef __DEBUG__
+#define __DEBUG__ 4 //Maximum verbosity
+#endif
+#ifndef __MODULE__
+#define __MODULE__ "LwIP"
+#endif
+#include "dbg.h"
+
+#define LWIP_PLATFORM_DIAG(...)  DBG(__VA_ARGS__)
+//#define LWIP_PLATFORM_ASSERT(x) do{ ERR(x); } while(0)
+#define LWIP_PLATFORM_ASSERT(...) ERR(__VA_ARGS__)
+
+//Printf formatters
+#define U16_F "hu"
+#define S16_F "d"
+#define X16_F "hx"
+#define U32_F "u"
+#define S32_F "d"
+#define X32_F "x"
+#define SZT_F "uz"
+
+//Endianness
+#define BYTE_ORDER LITTLE_ENDIAN
+
+#define LWIP_PLATFORM_BYTESWAP 1
+/*
+#define LWIP_PLATFORM_HTONS(x) ( (((u16_t)(x))>>8) | (((x)&0xFF)<<8) )
+#define LWIP_PLATFORM_HTONL(x) ( (((u32_t)(x))>>24) | (((x)&0xFF0000)>>8) \
+                               | (((x)&0xFF00)<<8) | (((x)&0xFF)<<24) )
+*/
+
+#include "cmsis.h"
+#define LWIP_PLATFORM_HTONS(x)      __REV16(x)
+#define LWIP_PLATFORM_HTONL(x)      __REV(x)
+
+//Checksums
+/*
+IP protocols use checksums (see RFC 1071). LwIP gives you a choice of 3 algorithms:
+load byte by byte, construct 16 bits word and add: not efficient for most platforms
+load first byte if odd address, loop processing 16 bits words, add last byte.
+load first byte and word if not 4 byte aligned, loop processing 32 bits words, add last word/byte.
+*/
+#define LWIP_CHKSUM_ALGORITHM 3
+
+//Structure packing 
+#if defined ( __CC_ARM )
+
+//This will work with ARMCC
+#define PACK_STRUCT_FIELD(x) x//__packed x
+#define PACK_STRUCT_STRUCT
+#define PACK_STRUCT_BEGIN __packed
+#define PACK_STRUCT_END
+#define ALIGNED(n)  __align(n)
+
+#elif   defined ( __GNUC__ )
+
+//This will work with GCC and ARMCC in GCC-compatible mode
+#define PACK_STRUCT_FIELD(x) x __attribute__((packed))
+#define PACK_STRUCT_STRUCT __attribute__((packed))
+#define PACK_STRUCT_BEGIN
+#define PACK_STRUCT_END
+#define ALIGNED(n)  __attribute__((aligned (n)))
+
+#else
+#error "This toolchain is not currently supported for LwIP support (you can FIXME)"
+#endif
+
+#define LWIP_PROVIDE_ERRNO
+
+#define SYS_LIGHTWEIGHT_PROT 1
+/*
+sys.h will provide default definitions (as of version 1.3.0) of these macros as:
+#define SYS_ARCH_DECL_PROTECT(lev) sys_prot_t lev
+#define SYS_ARCH_PROTECT(lev) lev = sys_arch_protect()
+#define SYS_ARCH_UNPROTECT(lev) sys_arch_unprotect(lev)
+*/
+
+#endif /* CC_H_ */