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#ifndef CYGONCE_HAL_ARM_STUB_H

#define CYGONCE_HAL_ARM_STUB_H

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

//

//      arm_stub.h

//

//      ARM-specific definitions for generic stub

//

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

//####ECOSGPLCOPYRIGHTBEGIN####

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

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

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, 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

// Software Foundation; either version 2 or (at your option) any later version.

//

// eCos is distributed in the hope that it will be useful, but WITHOUT ANY

// WARRANTY; without even the implied warranty of MERCHANTABILITY or

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

// for more details.

//

// You should have received a copy of the GNU General Public License along

// with eCos; if not, write to the Free Software Foundation, Inc.,

// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

//

// 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 the GNU General Public

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// in accordance with section (3) of the GNU General Public License.

//

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// this file might be covered by the GNU General Public License.

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// at http://sources.redhat.com/ecos/ecos-license/

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

//####ECOSGPLCOPYRIGHTEND####

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

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

//

// Author(s):     Red Hat, gthomas

// Contributors:  Red Hat, gthomas

// Date:          1998-11-26

// Purpose:       

// Description:   ARM-specific definitions for generic stub

// Usage:         

//

//####DESCRIPTIONEND####

//

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

#ifdef __cplusplus

extern "C" {

#endif

// The ARM has float (and possibly other coprocessor) registers that are

// larger than it can hold in a target_register_t.

#define TARGET_HAS_LARGE_REGISTERS

// ARM stub has special needs for register handling (not all regs are the

// the same size), so special put_register and get_register are provided.

#define CYGARC_STUB_REGISTER_ACCESS_DEFINED 1

#define NUMREGS    (16+8+2)  // 16 GPR, 8 FPR (unused), 2 PS

#define REGSIZE( _x_ ) (((_x_) < F0 || (_x_) >= FPS) ? 4 : 12)

// Comment out to allow for default gdb stub packet buffer which is larger.

// #define NUMREGBYTES ((16*4)+(8*12)+(2*4))

#ifndef TARGET_REGISTER_T_DEFINED

#define TARGET_REGISTER_T_DEFINED

typedef unsigned long target_register_t;

#endif

enum regnames {

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

    R8, R9, R10, FP, IP, SP, LR, PC,

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

    FPS, PS

};

#define HAL_STUB_REGISTERS_SIZE \

 ((sizeof(GDB_Registers) + sizeof(target_register_t) - 1) / sizeof(target_register_t))

#define PS_N 0x80000000

#define PS_Z 0x40000000

#define PS_C 0x20000000

#define PS_V 0x10000000

#define PS_I CPSR_IRQ_DISABLE

#define PS_F CPSR_FIQ_DISABLE

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);

extern int __is_bsp_syscall(void);

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

// Special definition of CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION

#ifdef CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT

// we can only do this at all if break support is enabled:

#ifdef __thumb__

// If this macro is used from Thumb code, we need to pass this information

// along to the place_break function so it can do the right thing.

#define CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION( _old_ )                         \

do {                                                                          \

    HAL_DISABLE_INTERRUPTS(_old_);                                            \

    cyg_hal_gdb_place_break((target_register_t)((unsigned long)&&cyg_hal_gdb_break_place + 1));\

} while ( 0 )

#else

#define CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION( _old_ )                       \

do {                                                                        \

    HAL_DISABLE_INTERRUPTS(_old_);                                          \

    cyg_hal_gdb_place_break((target_register_t)&&cyg_hal_gdb_break_place ); \

} while ( 0 )

#endif // __thumb_

// Also define ..LEAVE.. with a trick to *use* the label - sometimes the

// tools want to move the label, which is bad.

#define CYG_HAL_GDB_LEAVE_CRITICAL_IO_REGION( _old_ )                         \

do {                                                                          \

    cyg_hal_gdb_remove_break( (target_register_t)&&cyg_hal_gdb_break_place ); \

    HAL_RESTORE_INTERRUPTS(_old_);                                            \

    _old_ = 1; /* actually use the label as a label... */                     \

cyg_hal_gdb_break_place:                                                      \

    if ( (_old_)-- > 0 ) /* ...or the compiler might move it! */              \

        goto cyg_hal_gdb_break_place;                                         \

} while ( 0 )

#endif // CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT

#ifdef __cplusplus

} /* extern "C" */

#endif

#endif // ifndef CYGONCE_HAL_ARM_STUB_H