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lxdream.org :: lxdream/src/cpu.h
lxdream 0.9.1
released Jun 29
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filename src/cpu.h
changeset 736:a02d1475ccfd
prev586:2a3ba82cf243
next998:1754a8c6a9cf
author nkeynes
date Mon Jul 14 07:44:42 2008 +0000 (11 years ago)
permissions -rw-r--r--
last change Re-indent everything consistently
Fix include guards for consistency as well
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     1 /**
     2  * $Id$
     3  * 
     4  * Generic CPU definitions, primarily for providing information to the GUI.
     5  *
     6  * Copyright (c) 2005 Nathan Keynes.
     7  *
     8  * This program is free software; you can redistribute it and/or modify
     9  * it under the terms of the GNU General Public License as published by
    10  * the Free Software Foundation; either version 2 of the License, or
    11  * (at your option) any later version.
    12  *
    13  * This program is distributed in the hope that it will be useful,
    14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    16  * GNU General Public License for more details.
    17  */
    19 #ifndef lxdream_cpu_H
    20 #define lxdream_cpu_H 1
    22 #include "lxdream.h"
    23 #include "mem.h"
    25 #ifdef __cplusplus
    26 extern "C" {
    27 #endif
    29 /**
    30  * Disassembly function pointer typedef.
    31  *
    32  * @param pc Address to disassemble
    33  * @param buffer String buffer to write disassembly into
    34  * @param buflen Maximum length of buffer
    35  * @return next address to disassemble
    36  */
    37 typedef uint32_t (*disasm_func_t)(uint32_t pc, char *buffer, int buflen, char *opcode );
    39 #define REG_INT 0
    40 #define REG_FLT 1
    41 #define REG_SPECIAL 2
    43 /**
    44  * Structure that defines a single register in a CPU for display purposes.
    45  */
    46 typedef struct reg_desc_struct {
    47     char *name;
    48     int type;
    49     void *value;
    50 } reg_desc_t;
    52 /**
    53  * CPU definition structure - basic information and support functions.
    54  */
    55 typedef struct cpu_desc_struct {
    56     char *name; /* CPU Name */
    57     disasm_func_t disasm_func; /* Disassembly function */
    58     gboolean (*step_func)(); /* Single step function */
    59     int (*is_valid_page_func)(uint32_t); /* Test for valid memory page */
    60     void (*set_breakpoint)(uint32_t, breakpoint_type_t);
    61     gboolean (*clear_breakpoint)(uint32_t, breakpoint_type_t);
    62     int (*get_breakpoint)(uint32_t);
    63     size_t instr_size; /* Size of instruction */
    64     char *regs; /* Pointer to start of registers */
    65     size_t regs_size; /* Size of register structure in bytes */
    66     const struct reg_desc_struct *regs_info; /* Description of all registers */
    67     uint32_t *pc; /* Pointer to PC register */
    68 } const *cpu_desc_t;
    70 #ifdef __cplusplus
    71 }
    72 #endif
    74 #endif /* !lxdream_cpu_H */
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