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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 43:0cf3e339cc59
prev30:89b30313d757
next303:41786e056449
author nkeynes
date Mon Jan 15 08:32:09 2007 +0000 (13 years ago)
permissions -rw-r--r--
last change Break vram routines out into pvr2mem.c
Initial (untested) implementation of stride textures
Hookup YUV converter code in pvr2.c
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     1 /**
     2  * $Id: cpu.h,v 1.7 2005-12-26 11:47:12 nkeynes Exp $
     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 dream_cpu_H
    20 #define dream_cpu_H 1
    22 #include <stdint.h>
    23 #include <stdlib.h>
    24 #include <glib/gtypes.h>
    26 #ifdef __cplusplus
    27 extern "C" {
    28 #endif
    30 /**
    31  * Disassembly function pointer typedef.
    32  *
    33  * @param pc Address to disassemble
    34  * @param buffer String buffer to write disassembly into
    35  * @param buflen Maximum length of buffer
    36  * @return next address to disassemble
    37  */
    38 typedef uint32_t (*disasm_func_t)(uint32_t pc, char *buffer, int buflen, char *opcode );
    40 #define REG_INT 0
    41 #define REG_FLT 1
    42 #define REG_SPECIAL 2
    44 /**
    45  * Structure that defines a single register in a CPU for display purposes.
    46  */
    47 typedef struct reg_desc_struct {
    48     char *name;
    49     int type;
    50     void *value;
    51 } reg_desc_t;
    53 /**
    54  * CPU definition structure - basic information and support functions.
    55  */
    56 typedef struct cpu_desc_struct {
    57     char *name; /* CPU Name */
    58     disasm_func_t disasm_func; /* Disassembly function */
    59     gboolean (*step_func)(); /* Single step function */
    60     int (*is_valid_page_func)(uint32_t); /* Test for valid memory page */
    61     void (*set_breakpoint)(uint32_t, int);
    62     gboolean (*clear_breakpoint)(uint32_t, int);
    63     int (*get_breakpoint)(uint32_t);
    64     size_t instr_size; /* Size of instruction */
    65     char *regs; /* Pointer to start of registers */
    66     size_t regs_size; /* Size of register structure in bytes */
    67     const struct reg_desc_struct *regs_info; /* Description of all registers */
    68     uint32_t *pc; /* Pointer to PC register */
    69     uint32_t *icount; /* Pointer to instruction counter */
    70 } *cpu_desc_t;
    72 #ifdef __cplusplus
    73 }
    74 #endif
    76 #endif /* !dream_cpu_H */
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