nkeynes@30 | 1 | /**
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nkeynes@561 | 2 | * $Id$
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nkeynes@30 | 3 | *
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nkeynes@30 | 4 | * Generic CPU definitions, primarily for providing information to the GUI.
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nkeynes@30 | 5 | *
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nkeynes@30 | 6 | * Copyright (c) 2005 Nathan Keynes.
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nkeynes@30 | 7 | *
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nkeynes@30 | 8 | * This program is free software; you can redistribute it and/or modify
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nkeynes@30 | 9 | * it under the terms of the GNU General Public License as published by
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nkeynes@30 | 10 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@30 | 11 | * (at your option) any later version.
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nkeynes@30 | 12 | *
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nkeynes@30 | 13 | * This program is distributed in the hope that it will be useful,
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nkeynes@30 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@30 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@30 | 16 | * GNU General Public License for more details.
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nkeynes@30 | 17 | */
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nkeynes@9 | 18 |
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nkeynes@736 | 19 | #ifndef lxdream_cpu_H
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nkeynes@736 | 20 | #define lxdream_cpu_H 1
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nkeynes@9 | 21 |
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nkeynes@566 | 22 | #include "lxdream.h"
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nkeynes@566 | 23 | #include "mem.h"
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nkeynes@9 | 24 |
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nkeynes@9 | 25 | #ifdef __cplusplus
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nkeynes@9 | 26 | extern "C" {
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nkeynes@9 | 27 | #endif
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nkeynes@9 | 28 |
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nkeynes@9 | 29 | /**
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nkeynes@9 | 30 | * Disassembly function pointer typedef.
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nkeynes@9 | 31 | *
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nkeynes@9 | 32 | * @param pc Address to disassemble
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nkeynes@9 | 33 | * @param buffer String buffer to write disassembly into
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nkeynes@9 | 34 | * @param buflen Maximum length of buffer
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nkeynes@9 | 35 | * @return next address to disassemble
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nkeynes@9 | 36 | */
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nkeynes@11 | 37 | typedef uint32_t (*disasm_func_t)(uint32_t pc, char *buffer, int buflen, char *opcode );
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nkeynes@11 | 38 |
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nkeynes@9 | 39 | #define REG_INT 0
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nkeynes@998 | 40 | #define REG_FLOAT 1
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nkeynes@998 | 41 | #define REG_DOUBLE 2
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nkeynes@998 | 42 | #define REG_NONE 3 /* Used for empty/separator field */
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nkeynes@9 | 43 |
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nkeynes@9 | 44 | /**
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nkeynes@9 | 45 | * Structure that defines a single register in a CPU for display purposes.
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nkeynes@9 | 46 | */
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nkeynes@9 | 47 | typedef struct reg_desc_struct {
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nkeynes@9 | 48 | char *name;
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nkeynes@9 | 49 | int type;
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nkeynes@9 | 50 | void *value;
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nkeynes@9 | 51 | } reg_desc_t;
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nkeynes@9 | 52 |
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nkeynes@30 | 53 | /**
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nkeynes@998 | 54 | * CPU definition structure - basic information and support functions. Most
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nkeynes@998 | 55 | * of this is for debugger use.
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nkeynes@30 | 56 | */
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nkeynes@9 | 57 | typedef struct cpu_desc_struct {
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nkeynes@43 | 58 | char *name; /* CPU Name */
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nkeynes@998 | 59 | /**
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nkeynes@998 | 60 | * Single instruction disassembly
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nkeynes@998 | 61 | **/
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nkeynes@998 | 62 | disasm_func_t disasm_func;
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nkeynes@998 | 63 |
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nkeynes@998 | 64 | /**
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nkeynes@998 | 65 | * Return a pointer to a register (indexed per the reg_desc table)
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nkeynes@998 | 66 | */
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nkeynes@998 | 67 | void * (*get_register)( int reg );
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nkeynes@998 | 68 | gboolean (*is_valid_page_func)(uint32_t); /* Test for valid memory page */
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nkeynes@998 | 69 | /* Access to memory addressed by the CPU - physical and virtual versions.
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nkeynes@998 | 70 | * Virtual access should account for the current CPU mode, privilege level,
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nkeynes@998 | 71 | * etc.
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nkeynes@998 | 72 | * All functions return the number of bytes copied, which may be 0 if the
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nkeynes@998 | 73 | * address is unmapped.
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nkeynes@998 | 74 | */
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nkeynes@998 | 75 | size_t (*read_mem_phys)(unsigned char *buf, uint32_t addr, size_t length);
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nkeynes@998 | 76 | size_t (*write_mem_phys)(uint32_t addr, unsigned char *buf, size_t length);
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nkeynes@998 | 77 | size_t (*read_mem_vma)(unsigned char *buf, uint32_t addr, size_t length);
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nkeynes@998 | 78 | size_t (*write_mem_vma)(uint32_t addr, unsigned char *buf, size_t length);
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nkeynes@43 | 79 | gboolean (*step_func)(); /* Single step function */
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nkeynes@566 | 80 | void (*set_breakpoint)(uint32_t, breakpoint_type_t);
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nkeynes@566 | 81 | gboolean (*clear_breakpoint)(uint32_t, breakpoint_type_t);
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nkeynes@43 | 82 | int (*get_breakpoint)(uint32_t);
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nkeynes@43 | 83 | size_t instr_size; /* Size of instruction */
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nkeynes@43 | 84 | char *regs; /* Pointer to start of registers */
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nkeynes@43 | 85 | size_t regs_size; /* Size of register structure in bytes */
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nkeynes@43 | 86 | const struct reg_desc_struct *regs_info; /* Description of all registers */
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nkeynes@998 | 87 | unsigned int num_gpr_regs; /* Number of general purpose registers */
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nkeynes@998 | 88 | unsigned int num_gdb_regs; /* Total number of registers visible to gdb */
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nkeynes@43 | 89 | uint32_t *pc; /* Pointer to PC register */
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nkeynes@429 | 90 | } const *cpu_desc_t;
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nkeynes@9 | 91 |
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nkeynes@9 | 92 | #ifdef __cplusplus
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nkeynes@9 | 93 | }
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nkeynes@9 | 94 | #endif
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nkeynes@9 | 95 |
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nkeynes@998 | 96 | gboolean gdb_init_server( const char *interface, int port, cpu_desc_t cpu, gboolean mmu );
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nkeynes@998 | 97 |
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nkeynes@736 | 98 | #endif /* !lxdream_cpu_H */
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