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/*
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 * m68k virtual CPU header
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 * 
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 *  Copyright (c) 2005-2006 CodeSourcery
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 *  Written by Paul Brook
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 *
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 * This library is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2 of the License, or (at your option) any later version.
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 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with this library; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 */
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#ifndef CPU_M68K_H
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#define CPU_M68K_H
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#define TARGET_LONG_BITS 32
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#include "cpu-defs.h"
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#include "softfloat.h"
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#define MAX_QREGS 32
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#define TARGET_HAS_ICE 1
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#define ELF_MACHINE        EM_68K
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#define EXCP_ACCESS         2   /* Access (MMU) error.  */
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#define EXCP_ADDRESS        3   /* Address error.  */
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#define EXCP_ILLEGAL        4   /* Illegal instruction.  */
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#define EXCP_DIV0           5   /* Divide by zero */
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#define EXCP_PRIVILEGE      8   /* Privilege violation.  */
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#define EXCP_TRACE          9
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#define EXCP_LINEA          10  /* Unimplemented line-A (MAC) opcode.  */
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#define EXCP_LINEF          11  /* Unimplemented line-F (FPU) opcode.  */
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#define EXCP_DEBUGNBP       12  /* Non-breakpoint debug interrupt.  */
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#define EXCP_DEBEGBP        13  /* Breakpoint debug interrupt.  */
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#define EXCP_FORMAT         14  /* RTE format error.  */
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#define EXCP_UNINITIALIZED  15
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#define EXCP_TRAP0          32   /* User trap #0.  */
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#define EXCP_TRAP15         47   /* User trap #15.  */
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#define EXCP_UNSUPPORTED    61
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#define EXCP_ICE            13
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typedef struct CPUM68KState {
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    uint32_t dregs[8];
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    uint32_t aregs[8];
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    uint32_t pc;
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    uint32_t sr;
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    /* Condition flags.  */
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    uint32_t cc_op;
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    uint32_t cc_dest;
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    uint32_t cc_src;
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    uint32_t cc_x;
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    float64 fregs[8];
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    float64 fp_result;
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    uint32_t fpcr;
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    uint32_t fpsr;
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    float_status fp_status;
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    /* Temporary storage for DIV helpers.  */
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    uint32_t div1;
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    uint32_t div2;
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    /* MMU status.  */
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    struct {
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        uint32_t ar;
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    } mmu;
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    /* ??? remove this.  */
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    uint32_t t1;
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    /* exception/interrupt handling */
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    jmp_buf jmp_env;
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    int exception_index;
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    int interrupt_request;
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    int user_mode_only;
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    uint32_t address;
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    uint32_t qregs[MAX_QREGS];
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    CPU_COMMON
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} CPUM68KState;
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CPUM68KState *cpu_m68k_init(void);
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int cpu_m68k_exec(CPUM68KState *s);
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void cpu_m68k_close(CPUM68KState *s);
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/* you can call this signal handler from your SIGBUS and SIGSEGV
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   signal handlers to inform the virtual CPU of exceptions. non zero
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   is returned if the signal was handled by the virtual CPU.  */
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struct siginfo;
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int cpu_m68k_signal_handler(int host_signum, struct siginfo *info, 
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                           void *puc);
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void cpu_m68k_flush_flags(CPUM68KState *, int);
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enum {
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    CC_OP_DYNAMIC, /* Use env->cc_op  */
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    CC_OP_FLAGS, /* CC_DEST = CVZN, CC_SRC = unused */
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    CC_OP_LOGIC, /* CC_DEST = result, CC_SRC = unused */
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    CC_OP_ADD,   /* CC_DEST = result, CC_SRC = source */
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    CC_OP_SUB,   /* CC_DEST = result, CC_SRC = source */
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    CC_OP_CMPB,  /* CC_DEST = result, CC_SRC = source */
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    CC_OP_CMPW,  /* CC_DEST = result, CC_SRC = source */
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    CC_OP_ADDX,  /* CC_DEST = result, CC_SRC = source */
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    CC_OP_SUBX,  /* CC_DEST = result, CC_SRC = source */
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    CC_OP_SHL,   /* CC_DEST = source, CC_SRC = shift */
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    CC_OP_SHR,   /* CC_DEST = source, CC_SRC = shift */
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    CC_OP_SAR,   /* CC_DEST = source, CC_SRC = shift */
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};
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#define CCF_C 0x01
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#define CCF_V 0x02
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#define CCF_Z 0x04
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#define CCF_N 0x08
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#define CCF_X 0x01
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typedef struct m68k_def_t m68k_def_t;
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m68k_def_t *m68k_find_by_name(const char *);
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void cpu_m68k_register(CPUM68KState *, m68k_def_t *);
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#define M68K_FPCR_PREC (1 << 6)
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#ifdef CONFIG_USER_ONLY
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/* Linux uses 8k pages.  */
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#define TARGET_PAGE_BITS 13
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#else
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/* Smallest TLB entry size is 1k.  */ 
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#define TARGET_PAGE_BITS 10
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#endif
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#include "cpu-all.h"
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#endif