/* $NetBSD: frame.h,v 1.31 2019/02/18 01:12:23 thorpej Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1982, 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: Utah $Hdr: frame.h 1.8 92/12/20$
*
* @(#)frame.h 8.1 (Berkeley) 6/10/93
*/
#ifndef _M68K_FRAME_H_
#define _M68K_FRAME_H_
#include <m68k/cpuframe.h>
/* common frame size */
#define CFSIZE (sizeof(struct frame) - sizeof(union F_u))
#define NFMTSIZE 9
#define FMT0 0x0
#define FMT1 0x1
#define FMT2 0x2
#define FMT3 0x3
#define FMT4 0x4
#define FMT7 0x7
#define FMT8 0x8
#define FMT9 0x9
#define FMTA 0xA
#define FMTB 0xB
/* frame specific info sizes */
#define FMT0SIZE 0
#define FMT1SIZE 0
#define FMT2SIZE sizeof(struct fmt2)
#define FMT3SIZE sizeof(struct fmt3)
#define FMT4SIZE sizeof(struct fmt4)
#define FMT7SIZE sizeof(struct fmt7)
#define FMT8SIZE sizeof(struct fmt8)
#define FMT9SIZE sizeof(struct fmt9)
#define FMTASIZE sizeof(struct fmtA)
#define FMTBSIZE sizeof(struct fmtB)
#define V_BUSERR 0x008
#define V_ADDRERR 0x00C
#define V_TRAP1 0x084
/* 68010 SSW bits */
#define SSW1_RR 0x8000
#define SSW1_IF 0x2000
#define SSW1_DF 0x1000
#define SSW1_RM 0x0800
#define SSW1_HI 0x0400
#define SSW1_BX 0x0200
#define SSW1_RW 0x0100
#define SSW1_FCMASK 0x000F
/* 68020/68030 SSW bits */
#define SSW_RC 0x2000
#define SSW_RB 0x1000
#define SSW_DF 0x0100
#define SSW_RM 0x0080
#define SSW_RW 0x0040
#define SSW_FCMASK 0x0007
/* 68040 SSW bits */
#define SSW4_CP 0x8000
#define SSW4_CU 0x4000
#define SSW4_CT 0x2000
#define SSW4_CM 0x1000
#define SSW4_MA 0x0800
#define SSW4_ATC 0x0400
#define SSW4_LK 0x0200
#define SSW4_RW 0x0100
#define SSW4_WBSV 0x0080 /* really in WB status, not SSW */
#define SSW4_SZMASK 0x0060
#define SSW4_SZLW 0x0000
#define SSW4_SZB 0x0020
#define SSW4_SZW 0x0040
#define SSW4_SZLN 0x0060
#define SSW4_TTMASK 0x0018
#define SSW4_TTNOR 0x0000
#define SSW4_TTM16 0x0008
#define SSW4_TMMASK 0x0007
#define SSW4_TMDCP 0x0000
#define SSW4_TMUD 0x0001
#define SSW4_TMUC 0x0002
#define SSW4_TMKD 0x0005
#define SSW4_TMKC 0x0006
/* 060 Fault Status Long Word (FPSP) */
#define FSLW_MA 0x08000000
#define FSLW_LK 0x02000000
#define FSLW_RW 0x01800000
#define FSLW_RW_R 0x01000000
#define FSLW_RW_W 0x00800000
#define FSLW_SIZE 0x00600000
/*
* We better define the FSLW_SIZE values here, as the table given in the
* MC68060UM/AD rev. 0/1 p. 8-23 is wrong, and was corrected in the errata
* document.
*/
#define FSLW_SIZE_LONG 0x00000000
#define FSLW_SIZE_BYTE 0x00200000
#define FSLW_SIZE_WORD 0x00400000
#define FSLW_SIZE_MV16 0x00600000
#define FLSW_TT 0x00180000
#define FSLW_TM 0x00070000
#define FSLW_TM_SV 0x00040000
#define FSLW_IO 0x00008000
#define FSLW_PBE 0x00004000
#define FSLW_SBE 0x00002000
#define FSLW_PTA 0x00001000
#define FSLW_PTB 0x00000800
#define FSLW_IL 0x00000400
#define FSLW_PF 0x00000200
#define FSLW_SP 0x00000100
#define FSLW_WP 0x00000080
#define FSLW_TWE 0x00000040
#define FSLW_RE 0x00000020
#define FSLW_WE 0x00000010
#define FSLW_TTR 0x00000008
#define FSLW_BPE 0x00000004
#define FSLW_SEE 0x00000001
/* struct fpframe060 */
#define FPF6_FMT_NULL 0x00
#define FPF6_FMT_IDLE 0x60
#define FPF6_FMT_EXCP 0xe0
#define FPF6_V_BSUN 0
#define FPF6_V_INEX12 1
#define FPF6_V_DZ 2
#define FPF6_V_UNFL 3
#define FPF6_V_OPERR 4
#define FPF6_V_OVFL 5
#define FPF6_V_SNAN 6
#define FPF6_V_UNSUP 7
#if defined(_KERNEL)
#include <m68k/signal.h>
#if defined(COMPAT_16)
/*
* Stack frame layout when delivering a signal.
*/
struct sigframe_sigcontext {
int sf_ra; /* handler return address */
int sf_signum; /* signal number for handler */
int sf_code; /* additional info for handler */
struct sigcontext *sf_scp; /* context pointer for handler */
struct sigcontext sf_sc; /* actual context */
struct sigstate sf_state; /* state of the hardware */
};
#endif
struct sigframe_siginfo {
int sf_ra; /* return address for handler */
int sf_signum; /* "signum" argument for handler */
siginfo_t *sf_sip; /* "sip" argument for handler */
ucontext_t *sf_ucp; /* "ucp" argument for handler */
siginfo_t sf_si; /* actual saved siginfo */
ucontext_t sf_uc; /* actual saved ucontext */
};
/*
* Utility function to relocate the initial frame, make room to restore an
* exception frame and reenter the syscall.
*/
void reenter_syscall(struct frame *, int) __attribute__((__noreturn__));
/*
* Create an FPU "idle" frame for use by cpu_setmcontext()
*/
extern void m68k_make_fpu_idle_frame(void);
extern struct fpframe m68k_cached_fpu_idle_frame;
void *getframe(struct lwp *, int, int *);
void buildcontext(struct lwp *, void *, void *);
#ifdef COMPAT_16
void sendsig_sigcontext(const ksiginfo_t *, const sigset_t *);
#endif
#ifdef M68040
int m68040_writeback(struct frame *, int);
#endif
#if defined(__mc68010__)
/*
* Restartable atomic sequence-cased compare-and-swap for atomic_cas ops
* and locking primitives. We defined this here because it manipulates a
* "clockframe" as prepared by interrupt handlers.
*/
extern char _atomic_cas_ras_start;
extern char _atomic_cas_ras_end;
#define ATOMIC_CAS_CHECK(cfp) \
do { \
if (! CLKF_USERMODE(cfp) && \
(CLKF_PC(cfp) < (u_long)&_atomic_cas_ras_end && \
CLKF_PC(cfp) > (u_long)&_atomic_cas_ras_start)) { \
(cfp)->cf_pc = (u_long)&_atomic_cas_ras_start; \
} \
} while (/*CONSTCOND*/0)
#else
#define ATOMIC_CAS_CHECK(cfp) /* nothing */
#endif /* __mc68010__ */
#endif /* _KERNEL */
#endif /* _M68K_FRAME_H_ */