sys/arch/alpha/include/frame.h

   1 /* $NetBSD: frame.h,v 1.7 2005/12/11 12:16:16 christos Exp $ */
   2
   3 /*
   4  * Copyright (c) 1994, 1995 Carnegie-Mellon University.
   5  * All rights reserved.
   6  *
   7  * Author: Chris G. Demetriou
   8  *
   9  * Permission to use, copy, modify and distribute this software and
  10  * its documentation is hereby granted, provided that both the copyright
  11  * notice and this permission notice appear in all copies of the
  12  * software, derivative works or modified versions, and any portions
  13  * thereof, and that both notices appear in supporting documentation.
  14  *
  15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
  17  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  18  *
  19  * Carnegie Mellon requests users of this software to return to
  20  *
  21  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  22  *  School of Computer Science
  23  *  Carnegie Mellon University
  24  *  Pittsburgh PA 15213-3890
  25  *
  26  * any improvements or extensions that they make and grant Carnegie the
  27  * rights to redistribute these changes.
  28  */
  29
  30 #ifndef _ALPHA_FRAME_H_
  31 #define _ALPHA_FRAME_H_
  32
  33 #include <machine/alpha_cpu.h>
  34 #include <sys/signal.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 #if (defined(COMPAT_16) || defined(COMPAT_OSF1)) && defined(_KERNEL)
  96 struct sigframe_sigcontext {
  97         /*  ra address of trampoline */
  98         /*  a0 signum for handler */
  99         /*  a1 code for handler */
 100         /*  a2 struct   sigcontext for handler */
 101         struct sigcontext sf_sc; /* actual saved context */
 102 };
 103 #endif
 104
 105 struct sigframe_siginfo {
 106         /*  ra address of trampoline */
 107         /*  a0 signal number arg for handler */
 108         /*  a1 siginfo_t * arg for handler */
 109         /*  a2 ucontext_t * arg for handler */
 110         siginfo_t sf_si; /* actual saved siginfo */
 111         ucontext_t sf_uc; /* actual saved ucontext */
 112 };
 113
 114 #ifdef _KERNEL
 115 void *getframe(const struct lwp *, int, int *);
 116 void buildcontext(struct lwp *, const void *, const void *, const void *);
 117 void sendsig_siginfo(const ksiginfo_t *, const sigset_t *);
 118 #if defined(COMPAT_16) || defined(COMPAT_OSF1)
 119 void sendsig_sigcontext(const ksiginfo_t *, const sigset_t *);
 120 #endif
 121 #endif
 122
 123 #endif /* _ALPHA_FRAME_H_ */