filename | src/cpu.h |
changeset | 998:1754a8c6a9cf |
prev | 736:a02d1475ccfd |
next | 1065:bc1cc0c54917 |
author | nkeynes |
date | Sat Jun 13 07:12:51 2009 +0000 (14 years ago) |
permissions | -rw-r--r-- |
last change | Load plugins from the directory containing the executable first if they're there - simplifies development testing. Add dummy plugin for easy identification of the plugin directory |
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nkeynes@30 | 1 | /** |
nkeynes@586 | 2 | * $Id$ |
nkeynes@30 | 3 | * |
nkeynes@30 | 4 | * Generic CPU definitions, primarily for providing information to the GUI. |
nkeynes@30 | 5 | * |
nkeynes@30 | 6 | * Copyright (c) 2005 Nathan Keynes. |
nkeynes@30 | 7 | * |
nkeynes@30 | 8 | * This program is free software; you can redistribute it and/or modify |
nkeynes@30 | 9 | * it under the terms of the GNU General Public License as published by |
nkeynes@30 | 10 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@30 | 11 | * (at your option) any later version. |
nkeynes@30 | 12 | * |
nkeynes@30 | 13 | * This program is distributed in the hope that it will be useful, |
nkeynes@30 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@30 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@30 | 16 | * GNU General Public License for more details. |
nkeynes@30 | 17 | */ |
nkeynes@9 | 18 | |
nkeynes@736 | 19 | #ifndef lxdream_cpu_H |
nkeynes@736 | 20 | #define lxdream_cpu_H 1 |
nkeynes@9 | 21 | |
nkeynes@586 | 22 | #include "lxdream.h" |
nkeynes@586 | 23 | #include "mem.h" |
nkeynes@9 | 24 | |
nkeynes@9 | 25 | #ifdef __cplusplus |
nkeynes@9 | 26 | extern "C" { |
nkeynes@9 | 27 | #endif |
nkeynes@9 | 28 | |
nkeynes@9 | 29 | /** |
nkeynes@9 | 30 | * Disassembly function pointer typedef. |
nkeynes@9 | 31 | * |
nkeynes@9 | 32 | * @param pc Address to disassemble |
nkeynes@9 | 33 | * @param buffer String buffer to write disassembly into |
nkeynes@9 | 34 | * @param buflen Maximum length of buffer |
nkeynes@9 | 35 | * @return next address to disassemble |
nkeynes@9 | 36 | */ |
nkeynes@11 | 37 | typedef uint32_t (*disasm_func_t)(uint32_t pc, char *buffer, int buflen, char *opcode ); |
nkeynes@11 | 38 | |
nkeynes@9 | 39 | #define REG_INT 0 |
nkeynes@998 | 40 | #define REG_FLOAT 1 |
nkeynes@998 | 41 | #define REG_DOUBLE 2 |
nkeynes@998 | 42 | #define REG_NONE 3 /* Used for empty/separator field */ |
nkeynes@9 | 43 | |
nkeynes@9 | 44 | /** |
nkeynes@9 | 45 | * Structure that defines a single register in a CPU for display purposes. |
nkeynes@9 | 46 | */ |
nkeynes@9 | 47 | typedef struct reg_desc_struct { |
nkeynes@9 | 48 | char *name; |
nkeynes@9 | 49 | int type; |
nkeynes@9 | 50 | void *value; |
nkeynes@9 | 51 | } reg_desc_t; |
nkeynes@9 | 52 | |
nkeynes@30 | 53 | /** |
nkeynes@998 | 54 | * CPU definition structure - basic information and support functions. Most |
nkeynes@998 | 55 | * of this is for debugger use. |
nkeynes@30 | 56 | */ |
nkeynes@9 | 57 | typedef struct cpu_desc_struct { |
nkeynes@43 | 58 | char *name; /* CPU Name */ |
nkeynes@998 | 59 | /** |
nkeynes@998 | 60 | * Single instruction disassembly |
nkeynes@998 | 61 | **/ |
nkeynes@998 | 62 | disasm_func_t disasm_func; |
nkeynes@998 | 63 | |
nkeynes@998 | 64 | /** |
nkeynes@998 | 65 | * Return a pointer to a register (indexed per the reg_desc table) |
nkeynes@998 | 66 | */ |
nkeynes@998 | 67 | void * (*get_register)( int reg ); |
nkeynes@998 | 68 | gboolean (*is_valid_page_func)(uint32_t); /* Test for valid memory page */ |
nkeynes@998 | 69 | /* Access to memory addressed by the CPU - physical and virtual versions. |
nkeynes@998 | 70 | * Virtual access should account for the current CPU mode, privilege level, |
nkeynes@998 | 71 | * etc. |
nkeynes@998 | 72 | * All functions return the number of bytes copied, which may be 0 if the |
nkeynes@998 | 73 | * address is unmapped. |
nkeynes@998 | 74 | */ |
nkeynes@998 | 75 | size_t (*read_mem_phys)(unsigned char *buf, uint32_t addr, size_t length); |
nkeynes@998 | 76 | size_t (*write_mem_phys)(uint32_t addr, unsigned char *buf, size_t length); |
nkeynes@998 | 77 | size_t (*read_mem_vma)(unsigned char *buf, uint32_t addr, size_t length); |
nkeynes@998 | 78 | size_t (*write_mem_vma)(uint32_t addr, unsigned char *buf, size_t length); |
nkeynes@43 | 79 | gboolean (*step_func)(); /* Single step function */ |
nkeynes@586 | 80 | void (*set_breakpoint)(uint32_t, breakpoint_type_t); |
nkeynes@586 | 81 | gboolean (*clear_breakpoint)(uint32_t, breakpoint_type_t); |
nkeynes@43 | 82 | int (*get_breakpoint)(uint32_t); |
nkeynes@43 | 83 | size_t instr_size; /* Size of instruction */ |
nkeynes@43 | 84 | char *regs; /* Pointer to start of registers */ |
nkeynes@43 | 85 | size_t regs_size; /* Size of register structure in bytes */ |
nkeynes@43 | 86 | const struct reg_desc_struct *regs_info; /* Description of all registers */ |
nkeynes@998 | 87 | unsigned int num_gpr_regs; /* Number of general purpose registers */ |
nkeynes@998 | 88 | unsigned int num_gdb_regs; /* Total number of registers visible to gdb */ |
nkeynes@43 | 89 | uint32_t *pc; /* Pointer to PC register */ |
nkeynes@429 | 90 | } const *cpu_desc_t; |
nkeynes@9 | 91 | |
nkeynes@9 | 92 | #ifdef __cplusplus |
nkeynes@9 | 93 | } |
nkeynes@9 | 94 | #endif |
nkeynes@9 | 95 | |
nkeynes@998 | 96 | gboolean gdb_init_server( const char *interface, int port, cpu_desc_t cpu, gboolean mmu ); |
nkeynes@998 | 97 | |
nkeynes@736 | 98 | #endif /* !lxdream_cpu_H */ |
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