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Text File | 1992-07-27 | 1023 b | 34 lines | [TEXT/UNIX] |
- /* @(#)faultcode.h 1.4 89/07/26 SMI */
-
- /*
- * Copyright (c) 1987 by Sun Microsystems, Inc.
- */
-
- #ifndef _vm_faultcode_h
- #define _vm_faultcode_h
-
- /*
- * This file describes the "code" that is delivered during
- * SIGBUS and SIGSEGV exceptions. It also describes the data
- * type returned by vm routines which handle faults.
- *
- * If FC_CODE(fc) == FC_OBJERR, then FC_ERRNO(fc) contains the errno value
- * returned by the underlying object mapped at the fault address.
- */
- #define FC_HWERR 0x1 /* misc hardware error (e.g. bus timeout) */
- #define FC_ALIGN 0x2 /* hardware alignment error */
- #define FC_NOMAP 0x3 /* no mapping at the fault address */
- #define FC_PROT 0x4 /* access exceeded current protections */
- #define FC_OBJERR 0x5 /* underlying object returned errno value */
-
- #define FC_MAKE_ERR(e) (((e) << 8) | FC_OBJERR)
-
- #define FC_CODE(fc) ((fc) & 0xff)
- #define FC_ERRNO(fc) ((unsigned)(fc) >> 8)
-
- #ifndef LOCORE
- typedef int faultcode_t; /* type returned by vm fault routines */
- #endif
-
- #endif /*!_vm_faultcode_h*/
-