55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
/* sun.h - miscellaneous SUN constants */
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/* Copyright 1984-1992 Wind River Systems, Inc. */
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/*
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modification history
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------------------
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02b,22sep92,rrr added support for c++
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02a,04jul92,jcf cleaned up.
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01d,26may92,rrr the tree shuffle
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01c,04oct91,rrr passed through the ansification filter
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-changed copyright notice
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01b,05oct90,shl added copyright notice.
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made #endif ANSI style.
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01a,28apr89,gae created.
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*/
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#ifndef __INCsunh
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#define __INCsunh
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define NBPG 0x2000
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#define SYSBASE 0x0F000000
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#define MMU_PAGESIZE 0x2000 /* 8192 bytes */
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#define MMU_PAGESHIFT 13 /* log2(MMU_PAGESIZE) */
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#define MMU_PAGEOFFSET (MMU_PAGESIZE-1)/* Mask of address bits in page */
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#define MMU_PAGEMASK (~MMU_PAGEOFFSET)
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#define PAGESIZE 0x2000 /* All of the above, for logical */
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#define PAGESHIFT 13
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#define PAGEOFFSET (PAGESIZE - 1)
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#define PAGEMASK (~PAGEOFFSET)
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#define ptob(x) ((x) << PAGESHIFT)
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#define btop(x) (((unsigned)(x)) >> PAGESHIFT)
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#define btopr(x) ((((unsigned)(x) + PAGEOFFSET) >> PAGESHIFT))
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/* memory space types */
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#define SUN_MEM 0x0 /* Main Memory/ video memory */
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#define SUN_IO 0x1 /* SUN I/O space */
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#define SUN_VME16 0x2 /* VME 16 bit data space */
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#define SUN_VME32 0x3 /* VME 32 bit data space */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __INCsunh */
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