9042c0e20d
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2274 c046a42c-6fe2-441c-8c8c-71466251a162
143 lines
4.2 KiB
C
143 lines
4.2 KiB
C
/*
|
|
* m68k virtual CPU header
|
|
*
|
|
* Copyright (c) 2005-2006 CodeSourcery
|
|
* Written by Paul Brook
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
#ifndef CPU_M68K_H
|
|
#define CPU_M68K_H
|
|
|
|
#define TARGET_LONG_BITS 32
|
|
|
|
#include "cpu-defs.h"
|
|
|
|
#include "softfloat.h"
|
|
|
|
#define MAX_QREGS 32
|
|
|
|
#define TARGET_HAS_ICE 1
|
|
|
|
#define ELF_MACHINE EM_68K
|
|
|
|
#define EXCP_ACCESS 2 /* Access (MMU) error. */
|
|
#define EXCP_ADDRESS 3 /* Address error. */
|
|
#define EXCP_ILLEGAL 4 /* Illegal instruction. */
|
|
#define EXCP_DIV0 5 /* Divide by zero */
|
|
#define EXCP_PRIVILEGE 8 /* Privilege violation. */
|
|
#define EXCP_TRACE 9
|
|
#define EXCP_LINEA 10 /* Unimplemented line-A (MAC) opcode. */
|
|
#define EXCP_LINEF 11 /* Unimplemented line-F (FPU) opcode. */
|
|
#define EXCP_DEBUGNBP 12 /* Non-breakpoint debug interrupt. */
|
|
#define EXCP_DEBEGBP 13 /* Breakpoint debug interrupt. */
|
|
#define EXCP_FORMAT 14 /* RTE format error. */
|
|
#define EXCP_UNINITIALIZED 15
|
|
#define EXCP_TRAP0 32 /* User trap #0. */
|
|
#define EXCP_TRAP15 47 /* User trap #15. */
|
|
#define EXCP_UNSUPPORTED 61
|
|
#define EXCP_ICE 13
|
|
|
|
typedef struct CPUM68KState {
|
|
uint32_t dregs[8];
|
|
uint32_t aregs[8];
|
|
uint32_t pc;
|
|
uint32_t sr;
|
|
|
|
/* Condition flags. */
|
|
uint32_t cc_op;
|
|
uint32_t cc_dest;
|
|
uint32_t cc_src;
|
|
uint32_t cc_x;
|
|
|
|
float64 fregs[8];
|
|
float64 fp_result;
|
|
uint32_t fpcr;
|
|
uint32_t fpsr;
|
|
float_status fp_status;
|
|
|
|
/* Temporary storage for DIV helpers. */
|
|
uint32_t div1;
|
|
uint32_t div2;
|
|
|
|
/* MMU status. */
|
|
struct {
|
|
uint32_t ar;
|
|
} mmu;
|
|
/* ??? remove this. */
|
|
uint32_t t1;
|
|
|
|
/* exception/interrupt handling */
|
|
jmp_buf jmp_env;
|
|
int exception_index;
|
|
int interrupt_request;
|
|
int user_mode_only;
|
|
uint32_t address;
|
|
|
|
uint32_t qregs[MAX_QREGS];
|
|
|
|
CPU_COMMON
|
|
} CPUM68KState;
|
|
|
|
CPUM68KState *cpu_m68k_init(void);
|
|
int cpu_m68k_exec(CPUM68KState *s);
|
|
void cpu_m68k_close(CPUM68KState *s);
|
|
/* you can call this signal handler from your SIGBUS and SIGSEGV
|
|
signal handlers to inform the virtual CPU of exceptions. non zero
|
|
is returned if the signal was handled by the virtual CPU. */
|
|
struct siginfo;
|
|
int cpu_m68k_signal_handler(int host_signum, struct siginfo *info,
|
|
void *puc);
|
|
void cpu_m68k_flush_flags(CPUM68KState *, int);
|
|
|
|
enum {
|
|
CC_OP_DYNAMIC, /* Use env->cc_op */
|
|
CC_OP_FLAGS, /* CC_DEST = CVZN, CC_SRC = unused */
|
|
CC_OP_LOGIC, /* CC_DEST = result, CC_SRC = unused */
|
|
CC_OP_ADD, /* CC_DEST = result, CC_SRC = source */
|
|
CC_OP_SUB, /* CC_DEST = result, CC_SRC = source */
|
|
CC_OP_CMPB, /* CC_DEST = result, CC_SRC = source */
|
|
CC_OP_CMPW, /* CC_DEST = result, CC_SRC = source */
|
|
CC_OP_ADDX, /* CC_DEST = result, CC_SRC = source */
|
|
CC_OP_SUBX, /* CC_DEST = result, CC_SRC = source */
|
|
CC_OP_SHL, /* CC_DEST = source, CC_SRC = shift */
|
|
CC_OP_SHR, /* CC_DEST = source, CC_SRC = shift */
|
|
CC_OP_SAR, /* CC_DEST = source, CC_SRC = shift */
|
|
};
|
|
|
|
#define CCF_C 0x01
|
|
#define CCF_V 0x02
|
|
#define CCF_Z 0x04
|
|
#define CCF_N 0x08
|
|
#define CCF_X 0x01
|
|
|
|
typedef struct m68k_def_t m68k_def_t;
|
|
|
|
m68k_def_t *m68k_find_by_name(const char *);
|
|
void cpu_m68k_register(CPUM68KState *, m68k_def_t *);
|
|
|
|
#define M68K_FPCR_PREC (1 << 6)
|
|
|
|
#ifdef CONFIG_USER_ONLY
|
|
/* Linux uses 8k pages. */
|
|
#define TARGET_PAGE_BITS 13
|
|
#else
|
|
/* Smallest TLB entry size is 1k. */
|
|
#define TARGET_PAGE_BITS 10
|
|
#endif
|
|
#include "cpu-all.h"
|
|
|
|
#endif
|