arch/m68k/include/asm/traps.h

root/arch/m68k/include/asm/traps.h
/*
 *  linux/include/asm/traps.h
 *
 *  Copyright (C) 1993        Hamish Macdonald
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file COPYING in the main directory of this archive
 * for more details.
 */

#ifndef _M68K_TRAPS_H
#define _M68K_TRAPS_H

#ifndef __ASSEMBLER__

#include <linux/linkage.h>
#include <asm/ptrace.h>

typedef void (*e_vector)(void);
extern e_vector vectors[];
extern e_vector *_ramvec;

asmlinkage void auto_inthandler(void);
asmlinkage void user_inthandler(void);
asmlinkage void bad_inthandler(void);

#endif

#define VEC_RESETSP (0)
#define VEC_RESETPC (1)
#define VEC_BUSERR  (2)
#define VEC_ADDRERR (3)
#define VEC_ILLEGAL (4)
#define VEC_ZERODIV (5)
#define VEC_CHK     (6)
#define VEC_TRAP    (7)
#define VEC_PRIV    (8)
#define VEC_TRACE   (9)
#define VEC_LINE10  (10)
#define VEC_LINE11  (11)
#define VEC_RESV12  (12)
#define VEC_COPROC  (13)
#define VEC_FORMAT  (14)
#define VEC_UNINT   (15)
#define VEC_RESV16  (16)
#define VEC_RESV17  (17)
#define VEC_RESV18  (18)
#define VEC_RESV19  (19)
#define VEC_RESV20  (20)
#define VEC_RESV21  (21)
#define VEC_RESV22  (22)
#define VEC_RESV23  (23)
#define VEC_SPUR    (24)
#define VEC_INT1    (25)
#define VEC_INT2    (26)
#define VEC_INT3    (27)
#define VEC_INT4    (28)
#define VEC_INT5    (29)
#define VEC_INT6    (30)
#define VEC_INT7    (31)
#define VEC_SYS     (32)
#define VEC_TRAP1   (33)
#define VEC_TRAP2   (34)
#define VEC_TRAP3   (35)
#define VEC_TRAP4   (36)
#define VEC_TRAP5   (37)
#define VEC_TRAP6   (38)
#define VEC_TRAP7   (39)
#define VEC_TRAP8   (40)
#define VEC_TRAP9   (41)
#define VEC_TRAP10  (42)
#define VEC_TRAP11  (43)
#define VEC_TRAP12  (44)
#define VEC_TRAP13  (45)
#define VEC_TRAP14  (46)
#define VEC_TRAP15  (47)
#define VEC_FPBRUC  (48)
#define VEC_FPIR    (49)
#define VEC_FPDIVZ  (50)
#define VEC_FPUNDER (51)
#define VEC_FPOE    (52)
#define VEC_FPOVER  (53)
#define VEC_FPNAN   (54)
#define VEC_FPUNSUP (55)
#define VEC_MMUCFG  (56)
#define VEC_MMUILL  (57)
#define VEC_MMUACC  (58)
#define VEC_RESV59  (59)
#define VEC_UNIMPEA (60)
#define VEC_UNIMPII (61)
#define VEC_RESV62  (62)
#define VEC_RESV63  (63)
#define VEC_USER    (64)

#define VECOFF(vec) ((vec)<<2)

#ifndef __ASSEMBLER__

/* Status register bits */
#define PS_T  (0x8000)
#define PS_S  (0x2000)
#define PS_M  (0x1000)
#define PS_C  (0x0001)

/* bits for 68020/68030 special status word */

#define FC    (0x8000)
#define FB    (0x4000)
#define RC    (0x2000)
#define RB    (0x1000)
#define DF    (0x0100)
#define RM    (0x0080)
#define RW    (0x0040)
#define SZ    (0x0030)
#define DFC   (0x0007)

/* bits for 68030 MMU status register (mmusr,psr) */

#define MMU_B        (0x8000)    /* bus error */
#define MMU_L        (0x4000)    /* limit violation */
#define MMU_S        (0x2000)    /* supervisor violation */
#define MMU_WP       (0x0800)    /* write-protected */
#define MMU_I        (0x0400)    /* invalid descriptor */
#define MMU_M        (0x0200)    /* ATC entry modified */
#define MMU_T        (0x0040)    /* transparent translation */
#define MMU_NUM      (0x0007)    /* number of levels traversed */


/* bits for 68040 special status word */
#define CP_040  (0x8000)
#define CU_040  (0x4000)
#define CT_040  (0x2000)
#define CM_040  (0x1000)
#define MA_040  (0x0800)
#define ATC_040 (0x0400)
#define LK_040  (0x0200)
#define RW_040  (0x0100)
#define SIZ_040 (0x0060)
#define TT_040  (0x0018)
#define TM_040  (0x0007)

/* bits for 68040 write back status word */
#define WBV_040   (0x80)
#define WBSIZ_040 (0x60)
#define WBBYT_040 (0x20)
#define WBWRD_040 (0x40)
#define WBLNG_040 (0x00)
#define WBTT_040  (0x18)
#define WBTM_040  (0x07)

/* bus access size codes */
#define BA_SIZE_BYTE    (0x20)
#define BA_SIZE_WORD    (0x40)
#define BA_SIZE_LONG    (0x00)
#define BA_SIZE_LINE    (0x60)

/* bus access transfer type codes */
#define BA_TT_MOVE16    (0x08)

/* bits for 68040 MMU status register (mmusr) */
#define MMU_B_040   (0x0800)
#define MMU_G_040   (0x0400)
#define MMU_S_040   (0x0080)
#define MMU_CM_040  (0x0060)
#define MMU_M_040   (0x0010)
#define MMU_WP_040  (0x0004)
#define MMU_T_040   (0x0002)
#define MMU_R_040   (0x0001)

/* bits in the 68060 fault status long word (FSLW) */
#define MMU060_MA       (0x08000000)    /* misaligned */
#define MMU060_LK       (0x02000000)    /* locked transfer */
#define MMU060_RW       (0x01800000)    /* read/write */
# define MMU060_RW_W    (0x00800000)    /* write */
# define MMU060_RW_R    (0x01000000)    /* read */
# define MMU060_RW_RMW  (0x01800000)    /* read/modify/write */
# define MMU060_W       (0x00800000)    /* general write, includes rmw */
#define MMU060_SIZ      (0x00600000)    /* transfer size */
#define MMU060_TT       (0x00180000)    /* transfer type (TT) bits */
#define MMU060_TM       (0x00070000)    /* transfer modifier (TM) bits */
#define MMU060_IO       (0x00008000)    /* instruction or operand */
#define MMU060_PBE      (0x00004000)    /* push buffer bus error */
#define MMU060_SBE      (0x00002000)    /* store buffer bus error */
#define MMU060_PTA      (0x00001000)    /* pointer A fault */
#define MMU060_PTB      (0x00000800)    /* pointer B fault */
#define MMU060_IL       (0x00000400)    /* double indirect descr fault */
#define MMU060_PF       (0x00000200)    /* page fault (invalid descr) */
#define MMU060_SP       (0x00000100)    /* supervisor protection */
#define MMU060_WP       (0x00000080)    /* write protection */
#define MMU060_TWE      (0x00000040)    /* bus error on table search */
#define MMU060_RE       (0x00000020)    /* bus error on read */
#define MMU060_WE       (0x00000010)    /* bus error on write */
#define MMU060_TTR      (0x00000008)    /* error caused by TTR translation */
#define MMU060_BPE      (0x00000004)    /* branch prediction error */
#define MMU060_SEE      (0x00000001)    /* software emulated error */

/* cases of missing or invalid descriptors */
#define MMU060_DESC_ERR (MMU060_PTA | MMU060_PTB | \
                         MMU060_IL  | MMU060_PF)
/* bits that indicate real errors */
#define MMU060_ERR_BITS (MMU060_PBE | MMU060_SBE | MMU060_DESC_ERR | MMU060_SP | \
                         MMU060_WP  | MMU060_TWE | MMU060_RE       | MMU060_WE)

/* structure for stack frames */

struct frame {
    struct pt_regs ptregs;
    union {
            struct {
                    unsigned long  iaddr;    /* instruction address */
            } fmt2;
            struct {
                    unsigned long  effaddr;  /* effective address */
            } fmt3;
            struct {
                    unsigned long  effaddr;  /* effective address */
                    unsigned long  pc;       /* pc of faulted instr */
            } fmt4;
            struct {
                    unsigned long  effaddr;  /* effective address */
                    unsigned short ssw;      /* special status word */
                    unsigned short wb3s;     /* write back 3 status */
                    unsigned short wb2s;     /* write back 2 status */
                    unsigned short wb1s;     /* write back 1 status */
                    unsigned long  faddr;    /* fault address */
                    unsigned long  wb3a;     /* write back 3 address */
                    unsigned long  wb3d;     /* write back 3 data */
                    unsigned long  wb2a;     /* write back 2 address */
                    unsigned long  wb2d;     /* write back 2 data */
                    unsigned long  wb1a;     /* write back 1 address */
                    unsigned long  wb1dpd0;  /* write back 1 data/push data 0*/
                    unsigned long  pd1;      /* push data 1*/
                    unsigned long  pd2;      /* push data 2*/
                    unsigned long  pd3;      /* push data 3*/
            } fmt7;
            struct {
                    unsigned long  iaddr;    /* instruction address */
                    unsigned short int1[4];  /* internal registers */
            } fmt9;
            struct {
                    unsigned short int1;
                    unsigned short ssw;      /* special status word */
                    unsigned short isc;      /* instruction stage c */
                    unsigned short isb;      /* instruction stage b */
                    unsigned long  daddr;    /* data cycle fault address */
                    unsigned short int2[2];
                    unsigned long  dobuf;    /* data cycle output buffer */
                    unsigned short int3[2];
            } fmta;
            struct {
                    unsigned short int1;
                    unsigned short ssw;     /* special status word */
                    unsigned short isc;     /* instruction stage c */
                    unsigned short isb;     /* instruction stage b */
                    unsigned long  daddr;   /* data cycle fault address */
                    unsigned short int2[2];
                    unsigned long  dobuf;   /* data cycle output buffer */
                    unsigned short int3[4];
                    unsigned long  baddr;   /* stage B address */
                    unsigned short int4[2];
                    unsigned long  dibuf;   /* data cycle input buffer */
                    unsigned short int5[3];
                    unsigned       ver : 4; /* stack frame version # */
                    unsigned       int6:12;
                    unsigned short int7[18];
            } fmtb;
    } un;
};

#ifdef CONFIG_M68040
asmlinkage void berr_040cleanup(struct frame *fp);
#endif

#endif /* __ASSEMBLER__ */

#endif /* _M68K_TRAPS_H */
Linux
