frame.h revision 1.32
1 /* $NetBSD: frame.h,v 1.32 2023/09/26 12:46:30 tsutsui Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah $Hdr: frame.h 1.8 92/12/20$ 37 * 38 * @(#)frame.h 8.1 (Berkeley) 6/10/93 39 */ 40 41 #ifndef _M68K_FRAME_H_ 42 #define _M68K_FRAME_H_ 43 44 #include <m68k/cpuframe.h> 45 46 /* common frame size */ 47 #define CFSIZE (sizeof(struct frame) - sizeof(union F_u)) 48 #define NFMTSIZE 9 49 50 #define FMT0 0x0 51 #define FMT1 0x1 52 #define FMT2 0x2 53 #define FMT3 0x3 54 #define FMT4 0x4 55 #define FMT7 0x7 56 #define FMT8 0x8 57 #define FMT9 0x9 58 #define FMTA 0xA 59 #define FMTB 0xB 60 61 /* frame specific info sizes */ 62 #define FMT0SIZE 0 63 #define FMT1SIZE 0 64 #define FMT2SIZE sizeof(struct fmt2) 65 #define FMT3SIZE sizeof(struct fmt3) 66 #define FMT4SIZE sizeof(struct fmt4) 67 #define FMT7SIZE sizeof(struct fmt7) 68 #define FMT8SIZE sizeof(struct fmt8) 69 #define FMT9SIZE sizeof(struct fmt9) 70 #define FMTASIZE sizeof(struct fmtA) 71 #define FMTBSIZE sizeof(struct fmtB) 72 73 #define V_BUSERR 0x008 74 #define V_ADDRERR 0x00C 75 #define V_TRAP1 0x084 76 77 /* 68010 SSW bits */ 78 #define SSW1_RR 0x8000 79 #define SSW1_IF 0x2000 80 #define SSW1_DF 0x1000 81 #define SSW1_RM 0x0800 82 #define SSW1_HI 0x0400 83 #define SSW1_BX 0x0200 84 #define SSW1_RW 0x0100 85 #define SSW1_FCMASK 0x000F 86 87 /* 68020/68030 SSW bits */ 88 #define SSW_RC 0x2000 89 #define SSW_RB 0x1000 90 #define SSW_DF 0x0100 91 #define SSW_RM 0x0080 92 #define SSW_RW 0x0040 93 #define SSW_FCMASK 0x0007 94 95 /* 68040 SSW bits */ 96 #define SSW4_CP 0x8000 97 #define SSW4_CU 0x4000 98 #define SSW4_CT 0x2000 99 #define SSW4_CM 0x1000 100 #define SSW4_MA 0x0800 101 #define SSW4_ATC 0x0400 102 #define SSW4_LK 0x0200 103 #define SSW4_RW 0x0100 104 #define SSW4_WBSV 0x0080 /* really in WB status, not SSW */ 105 #define SSW4_SZMASK 0x0060 106 #define SSW4_SZLW 0x0000 107 #define SSW4_SZB 0x0020 108 #define SSW4_SZW 0x0040 109 #define SSW4_SZLN 0x0060 110 #define SSW4_TTMASK 0x0018 111 #define SSW4_TTNOR 0x0000 112 #define SSW4_TTM16 0x0008 113 #define SSW4_TMMASK 0x0007 114 #define SSW4_TMDCP 0x0000 115 #define SSW4_TMUD 0x0001 116 #define SSW4_TMUC 0x0002 117 #define SSW4_TMKD 0x0005 118 #define SSW4_TMKC 0x0006 119 120 /* 060 Fault Status Long Word (FPSP) */ 121 122 #define FSLW_MA 0x08000000 123 #define FSLW_LK 0x02000000 124 #define FSLW_RW 0x01800000 125 126 #define FSLW_RW_R 0x01000000 127 #define FSLW_RW_W 0x00800000 128 129 #define FSLW_SIZE 0x00600000 130 /* 131 * We better define the FSLW_SIZE values here, as the table given in the 132 * MC68060UM/AD rev. 0/1 p. 8-23 is wrong, and was corrected in the errata 133 * document. 134 */ 135 #define FSLW_SIZE_LONG 0x00000000 136 #define FSLW_SIZE_BYTE 0x00200000 137 #define FSLW_SIZE_WORD 0x00400000 138 #define FSLW_SIZE_MV16 0x00600000 139 140 #define FLSW_TT 0x00180000 141 #define FSLW_TM 0x00070000 142 #define FSLW_TM_SV 0x00040000 143 144 145 146 #define FSLW_IO 0x00008000 147 #define FSLW_PBE 0x00004000 148 #define FSLW_SBE 0x00002000 149 #define FSLW_PTA 0x00001000 150 #define FSLW_PTB 0x00000800 151 #define FSLW_IL 0x00000400 152 #define FSLW_PF 0x00000200 153 #define FSLW_SP 0x00000100 154 #define FSLW_WP 0x00000080 155 #define FSLW_TWE 0x00000040 156 #define FSLW_RE 0x00000020 157 #define FSLW_WE 0x00000010 158 #define FSLW_TTR 0x00000008 159 #define FSLW_BPE 0x00000004 160 #define FSLW_SEE 0x00000001 161 162 /* struct fpframe060 */ 163 #define FPF6_FMT_NULL 0x00 164 #define FPF6_FMT_IDLE 0x60 165 #define FPF6_FMT_EXCP 0xe0 166 167 #define FPF6_V_BSUN 0 168 #define FPF6_V_INEX12 1 169 #define FPF6_V_DZ 2 170 #define FPF6_V_UNFL 3 171 #define FPF6_V_OPERR 4 172 #define FPF6_V_OVFL 5 173 #define FPF6_V_SNAN 6 174 #define FPF6_V_UNSUP 7 175 176 #if defined(_KERNEL) 177 178 #include <m68k/signal.h> 179 180 #if defined(COMPAT_16) 181 /* 182 * Stack frame layout when delivering a signal. 183 */ 184 struct sigframe_sigcontext { 185 int sf_ra; /* handler return address */ 186 int sf_signum; /* signal number for handler */ 187 int sf_code; /* additional info for handler */ 188 struct sigcontext *sf_scp; /* context pointer for handler */ 189 struct sigcontext sf_sc; /* actual context */ 190 struct sigstate sf_state; /* state of the hardware */ 191 }; 192 #endif 193 194 struct sigframe_siginfo { 195 int sf_ra; /* return address for handler */ 196 int sf_signum; /* "signum" argument for handler */ 197 siginfo_t *sf_sip; /* "sip" argument for handler */ 198 ucontext_t *sf_ucp; /* "ucp" argument for handler */ 199 siginfo_t sf_si; /* actual saved siginfo */ 200 ucontext_t sf_uc; /* actual saved ucontext */ 201 }; 202 203 /* 204 * Utility function to relocate the initial frame, make room to restore an 205 * exception frame and reenter the syscall. 206 */ 207 void reenter_syscall(struct frame *, int) __attribute__((__noreturn__)); 208 209 /* 210 * Create an FPU "idle" frame for use by cpu_setmcontext() 211 */ 212 extern void m68k_make_fpu_idle_frame(void); 213 extern struct fpframe m68k_cached_fpu_idle_frame; 214 215 void *getframe(struct lwp *, int, int *); 216 void buildcontext(struct lwp *, void *, void *); 217 #ifdef COMPAT_16 218 void sendsig_sigcontext(const ksiginfo_t *, const sigset_t *); 219 #endif 220 221 #ifdef M68040 222 int m68040_writeback(struct frame *, int); 223 #endif 224 225 #if defined(__mc68010__) 226 /* 227 * Restartable atomic sequence-cased compare-and-swap for atomic_cas ops 228 * and locking primitives. We defined this here because it manipulates a 229 * "clockframe" as prepared by interrupt handlers. 230 */ 231 extern char _atomic_cas_ras_start; 232 extern char _atomic_cas_ras_end; 233 234 #define ATOMIC_CAS_CHECK(cfp) \ 235 do { \ 236 if (! CLKF_USERMODE(cfp) && \ 237 (CLKF_PC(cfp) < (u_long)&_atomic_cas_ras_end && \ 238 CLKF_PC(cfp) > (u_long)&_atomic_cas_ras_start)) { \ 239 (cfp)->cf_pc = (u_long)&_atomic_cas_ras_start; \ 240 } \ 241 } while (/*CONSTCOND*/0) 242 #else 243 #define ATOMIC_CAS_CHECK(cfp) /* nothing */ 244 #endif /* __mc68010__ */ 245 246 #endif /* _KERNEL */ 247 248 #endif /* _M68K_FRAME_H_ */ 249
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