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NetBSD/sys/arch/sh5/include/endian_machdep.h

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Re-arrange the endian/byteswap headers a bit by splitting off the byte swap code into a separate file and renaming them. Fix a typo which prevented ntohX and htonX macros DTRT for little-endian mode.
2002-08-30 14:50:06 +04:00
/* $NetBSD: endian_machdep.h,v 1.3 2002/08/30 10:50:07 scw Exp $ */
NetBSD, meet the SH-5 cpu. SH-5, meet NetBSD. Let's hope this is the start of a long and fruitful relationship. :-) This code, funded by Wasabi Systems, adds initial support for the Hitachi SuperH(tm) SH-5 cpu architecture to NetBSD. At the present time, NetBSD/evbsh5 only runs on a SH-5 core simulator which has no simulated devices other than a simple console. However, it is good enough to get to the "root device: " prompt. Device driver support for Real SH-5 Hardware is in place, particularly for supporting the up-coming Cayman evaluation board, and should be quite easy to get running when the hardware is available. There is no in-tree toolchain for this port at this time. Gcc-current has rudimentary SH-5 support but it is known to be buggy. A working toolchain was obtained from SuperH to facilitate this port. Gcc-current will be fixed in due course. The SH-5 architecture is fully 64-bit capable, although NetBSD/evbsh5 has currently only been tested in 32-bit mode. It is bi-endian, via a boot- time option and it also has an "SHcompact" mode in which it will execute SH-[34] user-land instructions. For more information on the SH-5, see www.superh.com. Suffice to say it is *not* just another respin of the SH-[34].
2002-07-05 17:31:28 +04:00
Make it so kernels can be compiled for 32-bit or 64-bit with a simple config file option. Also, don't hard code the endian setting in a header file. Rely instead on the compiler defining __LITTLE_ENDIAN__ and DTRT as appropriate.
2002-07-12 23:33:27 +04:00
#ifdef __LITTLE_ENDIAN__
#define _BYTE_ORDER _LITTLE_ENDIAN
#else
#define _BYTE_ORDER _BIG_ENDIAN
NetBSD, meet the SH-5 cpu. SH-5, meet NetBSD. Let's hope this is the start of a long and fruitful relationship. :-) This code, funded by Wasabi Systems, adds initial support for the Hitachi SuperH(tm) SH-5 cpu architecture to NetBSD. At the present time, NetBSD/evbsh5 only runs on a SH-5 core simulator which has no simulated devices other than a simple console. However, it is good enough to get to the "root device: " prompt. Device driver support for Real SH-5 Hardware is in place, particularly for supporting the up-coming Cayman evaluation board, and should be quite easy to get running when the hardware is available. There is no in-tree toolchain for this port at this time. Gcc-current has rudimentary SH-5 support but it is known to be buggy. A working toolchain was obtained from SuperH to facilitate this port. Gcc-current will be fixed in due course. The SH-5 architecture is fully 64-bit capable, although NetBSD/evbsh5 has currently only been tested in 32-bit mode. It is bi-endian, via a boot- time option and it also has an "SHcompact" mode in which it will execute SH-[34] user-land instructions. For more information on the SH-5, see www.superh.com. Suffice to say it is *not* just another respin of the SH-[34].
2002-07-05 17:31:28 +04:00
#endif
#ifdef __GNUC__
Re-arrange the endian/byteswap headers a bit by splitting off the byte swap code into a separate file and renaming them. Fix a typo which prevented ntohX and htonX macros DTRT for little-endian mode.
2002-08-30 14:50:06 +04:00
#include <sh5/byte_swap.h>
NetBSD, meet the SH-5 cpu. SH-5, meet NetBSD. Let's hope this is the start of a long and fruitful relationship. :-) This code, funded by Wasabi Systems, adds initial support for the Hitachi SuperH(tm) SH-5 cpu architecture to NetBSD. At the present time, NetBSD/evbsh5 only runs on a SH-5 core simulator which has no simulated devices other than a simple console. However, it is good enough to get to the "root device: " prompt. Device driver support for Real SH-5 Hardware is in place, particularly for supporting the up-coming Cayman evaluation board, and should be quite easy to get running when the hardware is available. There is no in-tree toolchain for this port at this time. Gcc-current has rudimentary SH-5 support but it is known to be buggy. A working toolchain was obtained from SuperH to facilitate this port. Gcc-current will be fixed in due course. The SH-5 architecture is fully 64-bit capable, although NetBSD/evbsh5 has currently only been tested in 32-bit mode. It is bi-endian, via a boot- time option and it also has an "SHcompact" mode in which it will execute SH-[34] user-land instructions. For more information on the SH-5, see www.superh.com. Suffice to say it is *not* just another respin of the SH-[34].
2002-07-05 17:31:28 +04:00
Re-arrange the endian/byteswap headers a bit by splitting off the byte swap code into a separate file and renaming them. Fix a typo which prevented ntohX and htonX macros DTRT for little-endian mode.
2002-08-30 14:50:06 +04:00
#if _BYTE_ORDER == _LITTLE_ENDIAN
#define ntohl(x) ((in_addr_t)_sh5_bswap32((in_addr_t)(x)))
#define ntohs(x) ((in_port_t)_sh5_bswap16((in_port_t)(x)))
#define htonl(x) ((in_addr_t)_sh5_bswap32((in_addr_t)(x)))
#define htons(x) ((in_port_t)_sh5_bswap16((in_port_t)(x)))
NetBSD, meet the SH-5 cpu. SH-5, meet NetBSD. Let's hope this is the start of a long and fruitful relationship. :-) This code, funded by Wasabi Systems, adds initial support for the Hitachi SuperH(tm) SH-5 cpu architecture to NetBSD. At the present time, NetBSD/evbsh5 only runs on a SH-5 core simulator which has no simulated devices other than a simple console. However, it is good enough to get to the "root device: " prompt. Device driver support for Real SH-5 Hardware is in place, particularly for supporting the up-coming Cayman evaluation board, and should be quite easy to get running when the hardware is available. There is no in-tree toolchain for this port at this time. Gcc-current has rudimentary SH-5 support but it is known to be buggy. A working toolchain was obtained from SuperH to facilitate this port. Gcc-current will be fixed in due course. The SH-5 architecture is fully 64-bit capable, although NetBSD/evbsh5 has currently only been tested in 32-bit mode. It is bi-endian, via a boot- time option and it also has an "SHcompact" mode in which it will execute SH-[34] user-land instructions. For more information on the SH-5, see www.superh.com. Suffice to say it is *not* just another respin of the SH-[34].
2002-07-05 17:31:28 +04:00
#endif
#endif /* __GNUC__ */
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