245 lines
7.0 KiB
C
245 lines
7.0 KiB
C
/* $NetBSD: frame.h,v 1.30 2011/02/08 20:20:16 rmind Exp $ */
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1982, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah $Hdr: frame.h 1.8 92/12/20$
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*
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* @(#)frame.h 8.1 (Berkeley) 6/10/93
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*/
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#ifndef _M68K_FRAME_H_
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#define _M68K_FRAME_H_
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#include <m68k/cpuframe.h>
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/* common frame size */
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#define CFSIZE (sizeof(struct frame) - sizeof(union F_u))
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#define NFMTSIZE 9
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#define FMT0 0x0
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#define FMT1 0x1
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#define FMT2 0x2
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#define FMT3 0x3
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#define FMT4 0x4
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#define FMT7 0x7
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#define FMT8 0x8
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#define FMT9 0x9
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#define FMTA 0xA
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#define FMTB 0xB
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/* frame specific info sizes */
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#define FMT0SIZE 0
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#define FMT1SIZE 0
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#define FMT2SIZE sizeof(struct fmt2)
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#define FMT3SIZE sizeof(struct fmt3)
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#define FMT4SIZE sizeof(struct fmt4)
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#define FMT7SIZE sizeof(struct fmt7)
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#define FMT8SIZE sizeof(struct fmt8)
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#define FMT9SIZE sizeof(struct fmt9)
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#define FMTASIZE sizeof(struct fmtA)
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#define FMTBSIZE sizeof(struct fmtB)
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#define V_BUSERR 0x008
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#define V_ADDRERR 0x00C
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#define V_TRAP1 0x084
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/* 68010 SSW bits */
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#define SSW1_RR 0x8000
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#define SSW1_IF 0x2000
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#define SSW1_DF 0x1000
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#define SSW1_RM 0x0800
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#define SSW1_HI 0x0400
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#define SSW1_BX 0x0200
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#define SSW1_RW 0x0100
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#define SSW1_FCMASK 0x000F
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/* 68020/68030 SSW bits */
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#define SSW_RC 0x2000
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#define SSW_RB 0x1000
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#define SSW_DF 0x0100
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#define SSW_RM 0x0080
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#define SSW_RW 0x0040
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#define SSW_FCMASK 0x0007
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/* 68040 SSW bits */
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#define SSW4_CP 0x8000
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#define SSW4_CU 0x4000
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#define SSW4_CT 0x2000
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#define SSW4_CM 0x1000
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#define SSW4_MA 0x0800
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#define SSW4_ATC 0x0400
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#define SSW4_LK 0x0200
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#define SSW4_RW 0x0100
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#define SSW4_WBSV 0x0080 /* really in WB status, not SSW */
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#define SSW4_SZMASK 0x0060
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#define SSW4_SZLW 0x0000
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#define SSW4_SZB 0x0020
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#define SSW4_SZW 0x0040
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#define SSW4_SZLN 0x0060
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#define SSW4_TTMASK 0x0018
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#define SSW4_TTNOR 0x0000
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#define SSW4_TTM16 0x0008
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#define SSW4_TMMASK 0x0007
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#define SSW4_TMDCP 0x0000
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#define SSW4_TMUD 0x0001
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#define SSW4_TMUC 0x0002
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#define SSW4_TMKD 0x0005
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#define SSW4_TMKC 0x0006
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/* 060 Fault Status Long Word (FPSP) */
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#define FSLW_MA 0x08000000
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#define FSLW_LK 0x02000000
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#define FSLW_RW 0x01800000
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#define FSLW_RW_R 0x01000000
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#define FSLW_RW_W 0x00800000
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#define FSLW_SIZE 0x00600000
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/*
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* We better define the FSLW_SIZE values here, as the table given in the
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* MC68060UM/AD rev. 0/1 p. 8-23 is wrong, and was corrected in the errata
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* document.
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*/
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#define FSLW_SIZE_LONG 0x00000000
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#define FSLW_SIZE_BYTE 0x00200000
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#define FSLW_SIZE_WORD 0x00400000
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#define FSLW_SIZE_MV16 0x00600000
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#define FLSW_TT 0x00180000
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#define FSLW_TM 0x00070000
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#define FSLW_TM_SV 0x00040000
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#define FSLW_IO 0x00008000
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#define FSLW_PBE 0x00004000
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#define FSLW_SBE 0x00002000
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#define FSLW_PTA 0x00001000
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#define FSLW_PTB 0x00000800
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#define FSLW_IL 0x00000400
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#define FSLW_PF 0x00000200
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#define FSLW_SP 0x00000100
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#define FSLW_WP 0x00000080
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#define FSLW_TWE 0x00000040
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#define FSLW_RE 0x00000020
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#define FSLW_WE 0x00000010
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#define FSLW_TTR 0x00000008
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#define FSLW_BPE 0x00000004
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#define FSLW_SEE 0x00000001
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/* struct fpframe060 */
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#define FPF6_FMT_NULL 0x00
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#define FPF6_FMT_IDLE 0x60
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#define FPF6_FMT_EXCP 0xe0
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#define FPF6_V_BSUN 0
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#define FPF6_V_INEX12 1
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#define FPF6_V_DZ 2
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#define FPF6_V_UNFL 3
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#define FPF6_V_OPERR 4
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#define FPF6_V_OVFL 5
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#define FPF6_V_SNAN 6
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#define FPF6_V_UNSUP 7
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#if defined(_KERNEL)
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#include <m68k/signal.h>
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#if defined(COMPAT_16)
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/*
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* Stack frame layout when delivering a signal.
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*/
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struct sigframe_sigcontext {
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int sf_ra; /* handler return address */
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int sf_signum; /* signal number for handler */
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int sf_code; /* additional info for handler */
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struct sigcontext *sf_scp; /* context pointer for handler */
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struct sigcontext sf_sc; /* actual context */
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struct sigstate sf_state; /* state of the hardware */
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};
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#endif
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struct sigframe_siginfo {
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int sf_ra; /* return address for handler */
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int sf_signum; /* "signum" argument for handler */
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siginfo_t *sf_sip; /* "sip" argument for handler */
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ucontext_t *sf_ucp; /* "ucp" argument for handler */
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siginfo_t sf_si; /* actual saved siginfo */
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ucontext_t sf_uc; /* actual saved ucontext */
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};
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/*
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* Utility function to relocate the initial frame, make room to restore an
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* exception frame and reenter the syscall.
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*/
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void reenter_syscall(struct frame *, int) __attribute__((__noreturn__));
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/*
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* Create an FPU "idle" frame for use by cpu_setmcontext()
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*/
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extern void m68k_make_fpu_idle_frame(void);
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extern struct fpframe m68k_cached_fpu_idle_frame;
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void *getframe(struct lwp *, int, int *);
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void buildcontext(struct lwp *, void *, void *);
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#ifdef COMPAT_16
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void sendsig_sigcontext(const ksiginfo_t *, const sigset_t *);
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#endif
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#if defined(__mc68010__)
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/*
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* Restartable atomic sequence-cased compare-and-swap for atomic_cas ops
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* and locking primitives. We defined this here because it manipulates a
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* "clockframe" as prepared by interrupt handlers.
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*/
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extern char _atomic_cas_ras_start;
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extern char _atomic_cas_ras_end;
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#define ATOMIC_CAS_CHECK(cfp) \
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do { \
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if (! CLKF_USERMODE(cfp) && \
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(CLKF_PC(cfp) < (u_long)&_atomic_cas_ras_end && \
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CLKF_PC(cfp) > (u_long)&_atomic_cas_ras_start)) { \
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(cfp)->cf_pc = (u_long)&_atomic_cas_ras_start; \
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} \
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} while (/*CONSTCOND*/0)
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#else
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#define ATOMIC_CAS_CHECK(cfp) /* nothing */
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#endif /* __mc68010__ */
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#endif /* _KERNEL */
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#endif /* _M68K_FRAME_H_ */
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