sys/arch/m68k/include/frame.h

   1 /*      $NetBSD: frame.h,v 1.28 2007/03/13 17:17:28 thorpej Exp $       */
   2
   3 /*
   4  * Copyright (c) 1982, 1990, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * the Systems Programming Group of the University of Utah Computer
   9  * Science Department.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  * from: Utah $Hdr: frame.h 1.8 92/12/20$
  36  *
  37  *      @(#)frame.h     8.1 (Berkeley) 6/10/93
  38  */
  39 /*
  40  * Copyright (c) 1988 University of Utah.
  41  *
  42  * This code is derived from software contributed to Berkeley by
  43  * the Systems Programming Group of the University of Utah Computer
  44  * Science Department.
  45  *
  46  * Redistribution and use in source and binary forms, with or without
  47  * modification, are permitted provided that the following conditions
  48  * are met:
  49  * 1. Redistributions of source code must retain the above copyright
  50  *    notice, this list of conditions and the following disclaimer.
  51  * 2. Redistributions in binary form must reproduce the above copyright
  52  *    notice, this list of conditions and the following disclaimer in the
  53  *    documentation and/or other materials provided with the distribution.
  54  * 3. All advertising materials mentioning features or use of this software
  55  *    must display the following acknowledgement:
  56  *      This product includes software developed by the University of
  57  *      California, Berkeley and its contributors.
  58  * 4. Neither the name of the University nor the names of its contributors
  59  *    may be used to endorse or promote products derived from this software
  60  *    without specific prior written permission.
  61  *
  62  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  63  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  64  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  65  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  66  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  67  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  68  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  69  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  70  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  71  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  72  * SUCH DAMAGE.
  73  *
  74  * from: Utah $Hdr: frame.h 1.8 92/12/20$
  75  *
  76  *      @(#)frame.h     8.1 (Berkeley) 6/10/93
  77  */
  78
  79 #ifndef _M68K_FRAME_H_
  80 #define _M68K_FRAME_H_
  81
  82 #include <m68k/cpuframe.h>
  83
  84 /* common frame size */
  85 #define CFSIZE          (sizeof(struct frame) - sizeof(union F_u))
  86 #define NFMTSIZE        9
  87
  88 #define FMT0            0x0
  89 #define FMT1            0x1
  90 #define FMT2            0x2
  91 #define FMT3            0x3
  92 #define FMT4            0x4
  93 #define FMT7            0x7
  94 #define FMT8            0x8
  95 #define FMT9            0x9
  96 #define FMTA            0xA
  97 #define FMTB            0xB
  98
  99 /* frame specific info sizes */
 100 #define FMT0SIZE        0
 101 #define FMT1SIZE        0
 102 #define FMT2SIZE        sizeof(struct fmt2)
 103 #define FMT3SIZE        sizeof(struct fmt3)
 104 #define FMT4SIZE        sizeof(struct fmt4)
 105 #define FMT7SIZE        sizeof(struct fmt7)
 106 #define FMT8SIZE        sizeof(struct fmt8)
 107 #define FMT9SIZE        sizeof(struct fmt9)
 108 #define FMTASIZE        sizeof(struct fmtA)
 109 #define FMTBSIZE        sizeof(struct fmtB)
 110
 111 #define V_BUSERR        0x008
 112 #define V_ADDRERR       0x00C
 113 #define V_TRAP1         0x084
 114
 115 /* 68010 SSW bits */
 116 #define SSW1_RR         0x8000
 117 #define SSW1_IF         0x2000
 118 #define SSW1_DF         0x1000
 119 #define SSW1_RM         0x0800
 120 #define SSW1_HI         0x0400
 121 #define SSW1_BX         0x0200
 122 #define SSW1_RW         0x0100
 123 #define SSW1_FCMASK     0x000F
 124
 125 /* 68020/68030 SSW bits */
 126 #define SSW_RC          0x2000
 127 #define SSW_RB          0x1000
 128 #define SSW_DF          0x0100
 129 #define SSW_RM          0x0080
 130 #define SSW_RW          0x0040
 131 #define SSW_FCMASK      0x0007
 132
 133 /* 68040 SSW bits */
 134 #define SSW4_CP         0x8000
 135 #define SSW4_CU         0x4000
 136 #define SSW4_CT         0x2000
 137 #define SSW4_CM         0x1000
 138 #define SSW4_MA         0x0800
 139 #define SSW4_ATC        0x0400
 140 #define SSW4_LK         0x0200
 141 #define SSW4_RW         0x0100
 142 #define SSW4_WBSV       0x0080  /* really in WB status, not SSW */
 143 #define SSW4_SZMASK     0x0060
 144 #define SSW4_SZLW       0x0000
 145 #define SSW4_SZB        0x0020
 146 #define SSW4_SZW        0x0040
 147 #define SSW4_SZLN       0x0060
 148 #define SSW4_TTMASK     0x0018
 149 #define SSW4_TTNOR      0x0000
 150 #define SSW4_TTM16      0x0008
 151 #define SSW4_TMMASK     0x0007
 152 #define SSW4_TMDCP      0x0000
 153 #define SSW4_TMUD       0x0001
 154 #define SSW4_TMUC       0x0002
 155 #define SSW4_TMKD       0x0005
 156 #define SSW4_TMKC       0x0006
 157
 158 /* 060 Fault Status Long Word (FPSP) */
 159
 160 #define FSLW_MA         0x08000000
 161 #define FSLW_LK         0x02000000
 162 #define FSLW_RW         0x01800000
 163
 164 #define FSLW_RW_R       0x01000000
 165 #define FSLW_RW_W       0x00800000
 166
 167 #define FSLW_SIZE       0x00600000
 168 /*
 169  * We better define the FSLW_SIZE values here, as the table given in the
 170  * MC68060UM/AD rev. 0/1 p. 8-23 is wrong, and was corrected in the errata
 171  * document.
 172  */
 173 #define FSLW_SIZE_LONG  0x00000000
 174 #define FSLW_SIZE_BYTE  0x00200000
 175 #define FSLW_SIZE_WORD  0x00400000
 176 #define FSLW_SIZE_MV16  0x00600000
 177
 178 #define FLSW_TT         0x00180000
 179 #define FSLW_TM         0x00070000
 180 #define FSLW_TM_SV      0x00040000
 181
 182
 183
 184 #define FSLW_IO         0x00008000
 185 #define FSLW_PBE        0x00004000
 186 #define FSLW_SBE        0x00002000
 187 #define FSLW_PTA        0x00001000
 188 #define FSLW_PTB        0x00000800
 189 #define FSLW_IL         0x00000400
 190 #define FSLW_PF         0x00000200
 191 #define FSLW_SP         0x00000100
 192 #define FSLW_WP         0x00000080
 193 #define FSLW_TWE        0x00000040
 194 #define FSLW_RE         0x00000020
 195 #define FSLW_WE         0x00000010
 196 #define FSLW_TTR        0x00000008
 197 #define FSLW_BPE        0x00000004
 198 #define FSLW_SEE        0x00000001
 199
 200 /* struct fpframe060 */
 201 #define FPF6_FMT_NULL   0x00
 202 #define FPF6_FMT_IDLE   0x60
 203 #define FPF6_FMT_EXCP   0xe0
 204
 205 #define FPF6_V_BSUN     0
 206 #define FPF6_V_INEX12   1
 207 #define FPF6_V_DZ       2
 208 #define FPF6_V_UNFL     3
 209 #define FPF6_V_OPERR    4
 210 #define FPF6_V_OVFL     5
 211 #define FPF6_V_SNAN     6
 212 #define FPF6_V_UNSUP    7
 213
 214 #if defined(_KERNEL)
 215
 216 #include <m68k/signal.h>
 217
 218 #if defined(COMPAT_16)
 219 /*
 220  * Stack frame layout when delivering a signal.
 221  */
 222 struct sigframe_sigcontext {
 223         int     sf_ra;                  /* handler return address */
 224         int     sf_signum;              /* signal number for handler */
 225         int     sf_code;                /* additional info for handler */
 226         struct sigcontext *sf_scp;      /* context pointer for handler */
 227         struct sigcontext sf_sc;        /* actual context */
 228         struct sigstate sf_state;       /* state of the hardware */
 229 };
 230 #endif
 231
 232 struct sigframe_siginfo {
 233         int             sf_ra;          /* return address for handler */
 234         int             sf_signum;      /* "signum" argument for handler */
 235         siginfo_t       *sf_sip;        /* "sip" argument for handler */
 236         ucontext_t      *sf_ucp;        /* "ucp" argument for handler */
 237         siginfo_t       sf_si;          /* actual saved siginfo */
 238         ucontext_t      sf_uc;          /* actual saved ucontext */
 239 };
 240
 241 /*
 242  * Utility function to relocate the initial frame, make room to restore an
 243  * exception frame and reenter the syscall.
 244  */
 245 void    reenter_syscall(struct frame *, int) __attribute__((__noreturn__));
 246
 247 /*
 248  * Create an FPU "idle" frame for use by cpu_setmcontext()
 249  */
 250 extern void m68k_make_fpu_idle_frame(void);
 251 extern struct fpframe m68k_cached_fpu_idle_frame;
 252
 253 void    *getframe(struct lwp *, int, int *);
 254 void    buildcontext(struct lwp *, void *, void *);
 255 #ifdef COMPAT_16
 256 void    sendsig_sigcontext(const ksiginfo_t *, const sigset_t *);
 257 #endif
 258
 259 #if defined(__mc68010__)
 260 /*
 261  * Restartable atomic sequence-cased compare-and-swap for atomic_cas ops
 262  * and locking primitives.  We defined this here because it manipulates a
 263  * "clockframe" as prepared by interrupt handlers.
 264  */
 265 extern char     _atomic_cas_ras_start;
 266 extern char     _atomic_cas_ras_end;
 267
 268 #define ATOMIC_CAS_CHECK(cfp)                                           \
 269 do {                                                                    \
 270         if (! CLKF_USERMODE(cfp) &&                                     \
 271             (CLKF_PC(cfp) < (u_long)&_atomic_cas_ras_end &&             \
 272              CLKF_PC(cfp) > (u_long)&_atomic_cas_ras_start)) {          \
 273                 (cfp)->cf_pc = (u_long)&_atomic_cas_ras_start;          \
 274         }                                                               \
 275 } while (/*CONSTCOND*/0)
 276 #else
 277 #define ATOMIC_CAS_CHECK(cfp)   /* nothing */
 278 #endif /* __mc68010__ */
 279
 280 #endif  /* _KERNEL */
 281
 282 #endif  /* _M68K_FRAME_H_ */