1.1 --- a/src/cpu.h	Mon Jul 14 07:44:42 2008 +0000
     1.2 +++ b/src/cpu.h	Sun Jun 28 12:07:21 2009 +0000
     1.3 @@ -37,8 +37,9 @@
     1.4  typedef uint32_t (*disasm_func_t)(uint32_t pc, char *buffer, int buflen, char *opcode );
     1.5  
     1.6  #define REG_INT 0
     1.7 -#define REG_FLT 1
     1.8 -#define REG_SPECIAL 2
     1.9 +#define REG_FLOAT 1
    1.10 +#define REG_DOUBLE 2
    1.11 +#define REG_NONE 3 /* Used for empty/separator field */
    1.12  
    1.13  /**
    1.14   * Structure that defines a single register in a CPU for display purposes.
    1.15 @@ -50,13 +51,32 @@
    1.16  } reg_desc_t;
    1.17  
    1.18  /**
    1.19 - * CPU definition structure - basic information and support functions.
    1.20 + * CPU definition structure - basic information and support functions. Most
    1.21 + * of this is for debugger use.
    1.22   */
    1.23  typedef struct cpu_desc_struct {
    1.24      char *name; /* CPU Name */
    1.25 -    disasm_func_t disasm_func; /* Disassembly function */
    1.26 +    /**
    1.27 +     * Single instruction disassembly 
    1.28 +     **/
    1.29 +    disasm_func_t disasm_func;
    1.30 +    
    1.31 +    /**
    1.32 +     * Return a pointer to a register (indexed per the reg_desc table)
    1.33 +     */
    1.34 +    void * (*get_register)( int reg );
    1.35 +    gboolean (*is_valid_page_func)(uint32_t); /* Test for valid memory page */
    1.36 +    /* Access to memory addressed by the CPU - physical and virtual versions.
    1.37 +     * Virtual access should account for the current CPU mode, privilege level,
    1.38 +     * etc.
    1.39 +     * All functions return the number of bytes copied, which may be 0 if the
    1.40 +     * address is unmapped.
    1.41 +     */
    1.42 +    size_t (*read_mem_phys)(unsigned char *buf, uint32_t addr, size_t length);
    1.43 +    size_t (*write_mem_phys)(uint32_t addr, unsigned char *buf, size_t length);
    1.44 +    size_t (*read_mem_vma)(unsigned char *buf, uint32_t addr, size_t length);
    1.45 +    size_t (*write_mem_vma)(uint32_t addr, unsigned char *buf, size_t length);
    1.46      gboolean (*step_func)(); /* Single step function */
    1.47 -    int (*is_valid_page_func)(uint32_t); /* Test for valid memory page */
    1.48      void (*set_breakpoint)(uint32_t, breakpoint_type_t);
    1.49      gboolean (*clear_breakpoint)(uint32_t, breakpoint_type_t);
    1.50      int (*get_breakpoint)(uint32_t);
    1.51 @@ -64,6 +84,8 @@
    1.52      char *regs; /* Pointer to start of registers */
    1.53      size_t regs_size; /* Size of register structure in bytes */
    1.54      const struct reg_desc_struct *regs_info; /* Description of all registers */
    1.55 +    unsigned int num_gpr_regs; /* Number of general purpose registers */
    1.56 +    unsigned int num_gdb_regs; /* Total number of registers visible to gdb */
    1.57      uint32_t *pc; /* Pointer to PC register */
    1.58  } const *cpu_desc_t;
    1.59  
    1.60 @@ -71,4 +93,6 @@
    1.61  }
    1.62  #endif
    1.63  
    1.64 +gboolean gdb_init_server( const char *interface, int port, cpu_desc_t cpu, gboolean mmu );
    1.65 +
    1.66  #endif /* !lxdream_cpu_H */