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/* |
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* ether_defs.h - Definitions for DLPI Ethernet Driver |
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* |
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* SheepShaver (C) 1997-2004 Marc Hellwig and Christian Bauer |
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* SheepShaver (C) 1997-2005 Marc Hellwig and Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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#define ETHER_DEFS_H |
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#if __BEOS__ && __POWERPC__ |
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#if __MWERKS__ && __POWERPC__ |
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#define PRAGMA_ALIGN_SUPPORTED 1 |
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#define PACKED__ |
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#else |
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#elif defined __GNUC__ |
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#define PACKED__ __attribute__ ((packed)) |
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#elif defined __sgi |
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#define PRAGMA_PACK_SUPPORTED 1 |
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#define PACKED__ |
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#else |
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#error "Packed attribute or pragma shall be supported" |
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#endif |
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* Data member wrappers |
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*/ |
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// Forward declarations |
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struct datab; |
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struct msgb; |
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struct queue; |
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struct multicast_node; |
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struct DLPIStream; |
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// Optimize for 32-bit big endian targets |
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#if defined(WORDS_BIGENDIAN) && (SIZEOF_VOID_P == 4) |
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// Predefined member types |
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typedef int8 nw_int8; |
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typedef int16 nw_int16; |
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typedef int32 nw_int32; |
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typedef uint8 nw_uint8; |
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typedef uint16 nw_uint16; |
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typedef uint32 nw_uint32; |
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typedef int nw_bool; |
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typedef uint8 * nw_uint8_p; |
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typedef void * nw_void_p; |
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typedef datab * nw_datab_p; |
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typedef msgb * nw_msgb_p; |
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typedef queue * nw_queue_p; |
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typedef multicast_node *nw_multicast_node_p; |
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typedef DLPIStream * nw_DLPIStream_p; |
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|
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#else |
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// Big-endian memory accessor |
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template< int nbytes > |
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struct nw_memory_helper; |
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uint8 _pad[sizeof(type)]; |
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public: |
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operator public_type () const { |
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return (public_type)nw_memory_helper<sizeof(type)>::load((void *)this); |
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return (public_type)(uintptr)nw_memory_helper<sizeof(type)>::load((void *)this); |
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} |
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public_type operator -> () const { |
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return this->operator public_type (); |
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} |
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nw_scalar_member_helper<type, public_type> & operator = (public_type val) { |
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nw_memory_helper<sizeof(type)>::store((void *)this, (type)val); |
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nw_memory_helper<sizeof(type)>::store((void *)this, (type)(uintptr)val); |
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return *this; |
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} |
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nw_scalar_member_helper<type, public_type> & operator += (int val) { |
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typedef nw_scalar_member_helper<int, bool> nw_bool; |
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typedef nw_scalar_member_helper<uint32, uint8 *> nw_uint8_p; |
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typedef nw_scalar_member_helper<uint32, void *> nw_void_p; |
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struct datab; |
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typedef nw_scalar_member_helper<uint32, datab *> nw_datab_p; |
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struct msgb; |
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typedef nw_scalar_member_helper<uint32, msgb *> nw_msgb_p; |
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struct queue; |
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typedef nw_scalar_member_helper<uint32, queue *> nw_queue_p; |
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struct multicast_node; |
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typedef nw_scalar_member_helper<uint32, multicast_node *> nw_multicast_node_p; |
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struct DLPIStream; |
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typedef nw_scalar_member_helper<uint32, DLPIStream *> nw_DLPIStream_p; |
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#endif |
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/* |
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* Structures |
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#pragma options align=mac68k |
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#endif |
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#ifdef PRAGMA_PACK_SUPPORTED |
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#pragma pack(1) |
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#endif |
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|
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// Packet headers |
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struct EnetPacketHeader { |
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uint8 fDestAddr[6]; |
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uint8 fSNAP[k8022SNAPLength]; |
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} PACKED__; |
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#ifdef PRAGMA_PACK_SUPPORTED |
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#pragma pack(0) |
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#endif |
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#ifdef PRAGMA_ALIGN_SUPPORTED |
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#pragma options align=reset |
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#endif |
