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#ifndef CYGONCE_HAL_PPC_STUB_H

#define CYGONCE_HAL_PPC_STUB_H

//========================================================================

//

//      ppc_stub.h

//

//      PowerPC-specific definitions for generic stub

//

//========================================================================

// ####ECOSGPLCOPYRIGHTBEGIN####                                            

// -------------------------------------------                              

// This file is part of eCos, the Embedded Configurable Operating System.   

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.

//

// eCos is free software; you can redistribute it and/or modify it under    

// the terms of the GNU General Public License as published by the Free     

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// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    

// for more details.                                                        

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//

// As a special exception, if other files instantiate templates or use      

// macros or inline functions from this file, or you compile this file      

// and link it with other works to produce a work based on this file,       

// this file does not by itself cause the resulting work to be covered by   

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// General Public License v2.                                               

//

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// ####ECOSGPLCOPYRIGHTEND####                                              

//========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):     Red Hat, jskov

// Contributors:  Red Hat, jskov

// Date:          1998-08-20

// Purpose:       

// Description:   PowerPC-specific definitions for generic stub

// Usage:         

//

//####DESCRIPTIONEND####

//

//========================================================================

#ifdef __cplusplus

extern "C" {

#endif

typedef unsigned long target_register_t;

#ifndef CYGHWR_HAL_POWERPC_BOOK_E

// Most PowerPCs use a standard register layout.

#define NUMREGS    71

#define REGSIZE( _x_ ) (((_x_) >= F0 && (_x_) <= F31) ? 8 : 4)

#else

// BookE processors only have 70 registers, MQ is not supported. All

// registers are 32 bit and instead of FP registers there are the top

// 32 bits of the GPRs. The 64-bit registers are only used by SPE

// instructions, which we don't currently support.

#define NUMREGS    70

#define REGSIZE( _x_ ) (4)

#endif

#ifdef CYGHWR_HAL_POWERPC_FPU

// The PowerPC has floating point registers that are larger than what it

// can hold in a target_register_t

#define TARGET_HAS_LARGE_REGISTERS

// PowerPC stub has special needs for register handling because flating point

// registers are bigger than the rest. Special put_register and get_register

// are provided

#define CYGARC_STUB_REGISTER_ACCESS_DEFINED 1

// extra space needed for floating point registers

#define HAL_STUB_REGISTERS_SIZE ((sizeof(GDB_Registers) + sizeof(target_register_t) - 1)/sizeof(target_register_t))

#endif

enum regnames {

    R0, R1, R2, R3, R4, R5, R6, R7,

    R8, R9, R10, R11, R12, R13, R14, R15,

    R16, R17, R18, R19, R20, R21, R22, R23,

    R24, R25, R26, R27, R28, R29, R30, R31,

    F0, F1, F2, F3, F4, F5, F6, F7,

    F8, F9, F10, F11, F12, F13, F14, F15,

    F16, F17, F18, F19, F20, F21, F22, F23,

    F24, F25, F26, F27, F28, F29, F30, F31,

    PC, PS, CND, LR, CNT, XER, MQ

};

// For convenience

#define SP              R1

typedef enum regnames regnames_t;

/* Given a trap value TRAP, return the corresponding signal. */

extern int __computeSignal (unsigned int trap_number);

/* Return the SPARC trap number corresponding to the last-taken trap. */

extern int __get_trap_number (void);

/* Return the currently-saved value corresponding to register REG. */

extern target_register_t get_register (regnames_t reg);

/* Store VALUE in the register corresponding to WHICH. */

extern void put_register (regnames_t which, target_register_t value);

/* Set the currently-saved pc register value to PC. This also updates NPC

   as needed. */

extern void set_pc (target_register_t pc);

/* Set things up so that the next user resume will execute one instruction.

   This may be done by setting breakpoints or setting a single step flag

   in the saved user registers, for example. */

void __single_step (void);

/* Clear the single-step state. */

void __clear_single_step (void);

/* If the breakpoint we hit is in the breakpoint() instruction, return a

   non-zero value. */

extern int __is_breakpoint_function (void);

/* Skip the current instruction. */

extern void __skipinst (void);

extern void __install_breakpoints (void);

extern void __clear_breakpoints (void);

#ifdef __cplusplus

}   /* extern "C" */

#endif

#endif // ifndef CYGONCE_HAL_PPC_STUB_H