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Annotation of sys/arch/powerpc/include/trap.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: trap.h,v 1.7 2007/04/26 21:36:32 kettenis Exp $       */
                      2: /*     $NetBSD: trap.h,v 1.1 1996/09/30 16:34:35 ws Exp $      */
                      3:
                      4: /*
                      5:  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
                      6:  * Copyright (C) 1995, 1996 TooLs GmbH.
                      7:  * All rights reserved.
                      8:  *
                      9:  * Redistribution and use in source and binary forms, with or without
                     10:  * modification, are permitted provided that the following conditions
                     11:  * are met:
                     12:  * 1. Redistributions of source code must retain the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer.
                     14:  * 2. Redistributions in binary form must reproduce the above copyright
                     15:  *    notice, this list of conditions and the following disclaimer in the
                     16:  *    documentation and/or other materials provided with the distribution.
                     17:  * 3. All advertising materials mentioning features or use of this software
                     18:  *    must display the following acknowledgement:
                     19:  *     This product includes software developed by TooLs GmbH.
                     20:  * 4. The name of TooLs GmbH may not be used to endorse or promote products
                     21:  *    derived from this software without specific prior written permission.
                     22:  *
                     23:  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
                     24:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     25:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     26:  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
                     27:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
                     28:  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
                     29:  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
                     30:  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
                     31:  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
                     32:  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     33:  */
                     34: #ifndef        _POWERPC_TRAP_H_
                     35: #define        _POWERPC_TRAP_H_
                     36:
                     37: #define        EXC_RSVD        0x0000          /* Reserved */
                     38: #define        EXC_RST         0x0100          /* Reset */
                     39: #define        EXC_MCHK        0x0200          /* Machine Check */
                     40: #define        EXC_DSI         0x0300          /* Data Storage Interrupt */
                     41: #define        EXC_ISI         0x0400          /* Instruction Storage Interrupt */
                     42: #define        EXC_EXI         0x0500          /* External Interrupt */
                     43: #define        EXC_ALI         0x0600          /* Alignment Interrupt */
                     44: #define        EXC_PGM         0x0700          /* Program Interrupt */
                     45: #define        EXC_FPU         0x0800          /* Floating-point Unavailable */
                     46: #define        EXC_DECR        0x0900          /* Decrementer Interrupt */
                     47: #define        EXC_SC          0x0c00          /* System Call */
                     48: #define        EXC_TRC         0x0d00          /* Trace */
                     49: #define        EXC_FPA         0x0e00          /* Floating-point Assist */
                     50: #define        EXC_PERF        0x0f00          /* Performance Monitoring */
                     51: #define        EXC_VEC         0x0f20          /* AltiVec Unavailable */
                     52: #define        EXC_BPT         0x1300          /* Instruction Breakpoint */
                     53: #define        EXC_SMI         0x1400          /* System Management Interrupt */
                     54: #define        EXC_VECAST      0x1600          /* AltiVec Assist */
                     55:
                     56: /* And these are only on the 603: */
                     57: #define        EXC_IMISS       0x1000          /* Instruction translation miss */
                     58: #define        EXC_DLMISS      0x1100          /* Data load translation miss */
                     59: #define        EXC_DSMISS      0x1200          /* Data store translation miss */
                     60:
                     61: #define        EXC_LAST        0x2f00          /* Last possible exception vector */
                     62:
                     63: #define        EXC_AST         0x3000          /* Fake AST vector */
                     64:
                     65: /* Trap was in user mode */
                     66: #define        EXC_USER        0x10000
                     67:
                     68: /*
                     69:  * EXC_ALI sets bits in the DSISR and DAR to provide enough
                     70:  * information to recover from the unaligned access without needing to
                     71:  * parse the offending instruction. This includes certain bits of the
                     72:  * opcode, and information about what registers are used. The opcode
                     73:  * indicator values below come from Appendix F of Book III of "The
                     74:  * PowerPC Architecture".
                     75:  */
                     76:
                     77: #define EXC_ALI_OPCODE_INDICATOR(dsisr) ((dsisr >> 10) & 0x7f)
                     78: #define EXC_ALI_LFD    0x09
                     79: #define EXC_ALI_STFD   0x0b
                     80: #define EXC_ALI_DCBZ   0x5f
                     81:
                     82: /* Macros to extract register information */
                     83: #define EXC_ALI_RST(dsisr) ((dsisr >> 5) & 0x1f)   /* source or target */
                     84: #define EXC_ALI_RA(dsisr) (dsisr & 0x1f)
                     85:
                     86: #endif /* _POWERPC_TRAP_H_ */