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Annotation of sys/arch/alpha/include/frame.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: frame.h,v 1.3 1996/10/30 22:39:06 niklas Exp $        */
                      2: /*     $NetBSD: frame.h,v 1.3 1996/07/11 05:31:32 cgd Exp $    */
                      3:
                      4: /*
                      5:  * Copyright (c) 1994, 1995 Carnegie-Mellon University.
                      6:  * All rights reserved.
                      7:  *
                      8:  * Author: Chris G. Demetriou
                      9:  *
                     10:  * Permission to use, copy, modify and distribute this software and
                     11:  * its documentation is hereby granted, provided that both the copyright
                     12:  * notice and this permission notice appear in all copies of the
                     13:  * software, derivative works or modified versions, and any portions
                     14:  * thereof, and that both notices appear in supporting documentation.
                     15:  *
                     16:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
                     17:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
                     18:  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
                     19:  *
                     20:  * Carnegie Mellon requests users of this software to return to
                     21:  *
                     22:  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
                     23:  *  School of Computer Science
                     24:  *  Carnegie Mellon University
                     25:  *  Pittsburgh PA 15213-3890
                     26:  *
                     27:  * any improvements or extensions that they make and grant Carnegie the
                     28:  * rights to redistribute these changes.
                     29:  */
                     30:
                     31: #ifndef _ALPHA_FRAME_H_
                     32: #define        _ALPHA_FRAME_H_
                     33:
                     34: #include <machine/alpha_cpu.h>
                     35:
                     36: /*
                     37:  * Software trap, exception, and syscall frame.
                     38:  *
                     39:  * Includes "hardware" (PALcode) frame.
                     40:  *
                     41:  * PALcode puts ALPHA_HWFRAME_* fields on stack.  We have to add
                     42:  * all of the general-purpose registers except for zero, for sp
                     43:  * (which is automatically saved in the PCB's USP field for entries
                     44:  * from user mode, and which is implicitly saved and restored by the
                     45:  * calling conventions for entries from kernel mode), and (on traps
                     46:  * and exceptions) for a0, a1, and a2 (which are saved by PALcode).
                     47:  */
                     48:
                     49: /* Quadword offsets of the registers to be saved. */
                     50: #define        FRAME_V0        0
                     51: #define        FRAME_T0        1
                     52: #define        FRAME_T1        2
                     53: #define        FRAME_T2        3
                     54: #define        FRAME_T3        4
                     55: #define        FRAME_T4        5
                     56: #define        FRAME_T5        6
                     57: #define        FRAME_T6        7
                     58: #define        FRAME_T7        8
                     59: #define        FRAME_S0        9
                     60: #define        FRAME_S1        10
                     61: #define        FRAME_S2        11
                     62: #define        FRAME_S3        12
                     63: #define        FRAME_S4        13
                     64: #define        FRAME_S5        14
                     65: #define        FRAME_S6        15
                     66: #define        FRAME_A3        16
                     67: #define        FRAME_A4        17
                     68: #define        FRAME_A5        18
                     69: #define        FRAME_T8        19
                     70: #define        FRAME_T9        20
                     71: #define        FRAME_T10       21
                     72: #define        FRAME_T11       22
                     73: #define        FRAME_RA        23
                     74: #define        FRAME_T12       24
                     75: #define        FRAME_AT        25
                     76: #define        FRAME_SP        26
                     77:
                     78: #define        FRAME_SW_SIZE   (FRAME_SP + 1)
                     79: #define        FRAME_HW_OFFSET FRAME_SW_SIZE
                     80:
                     81: #define        FRAME_PS        (FRAME_HW_OFFSET + ALPHA_HWFRAME_PS)
                     82: #define        FRAME_PC        (FRAME_HW_OFFSET + ALPHA_HWFRAME_PC)
                     83: #define        FRAME_GP        (FRAME_HW_OFFSET + ALPHA_HWFRAME_GP)
                     84: #define        FRAME_A0        (FRAME_HW_OFFSET + ALPHA_HWFRAME_A0)
                     85: #define        FRAME_A1        (FRAME_HW_OFFSET + ALPHA_HWFRAME_A1)
                     86: #define        FRAME_A2        (FRAME_HW_OFFSET + ALPHA_HWFRAME_A2)
                     87:
                     88: #define        FRAME_HW_SIZE   ALPHA_HWFRAME_SIZE
                     89: #define        FRAME_SIZE      (FRAME_HW_OFFSET + FRAME_HW_SIZE)
                     90:
                     91: struct trapframe {
                     92:        unsigned long   tf_regs[FRAME_SIZE];    /* See above */
                     93: };
                     94:
                     95: #endif /* _ALPHA_FRAME_H_ */