coldfire_stub.h

实现快速傅立叶变换算法,provides test framwork for FFT testing

#ifndef CYGONCE_HAL_COLDFIRE_STUB_H
#define CYGONCE_HAL_COLDFIRE_STUB_H

//========================================================================
//
//      coldfire_stub.h
//
//      ColdFire-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.
// Copyright (C) 2006 eCosCentric Ltd.
//
// 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.
//
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// 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
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):     Enrico Piria
// Contributors:
// Date:          2005-25-06
// Purpose:       
// Description:   ColdFire-specific definitions for generic stub.
//
//####DESCRIPTIONEND####
//========================================================================

#ifdef __cplusplus
extern "C" {
#endif

#define NUMREGS 18

// ColdFire 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

#define REGSIZE( _x_ ) (4)

typedef unsigned long target_register_t;

enum regnames {
    D0, D1, D2, D3, D4, D5, D6, D7,
    A0, A1, A2, A3, A4, A5, A6, A7,
    SR, PC,
};

#define SP              A7

typedef enum regnames regnames_t;

// Given a trap value TRAP, return the corresponding signal
extern int __computeSignal(unsigned int trap_number);

// Return the ColdFire 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);

// Read the contents of register WHICH into VALUE as raw bytes
extern int get_register_as_bytes(regnames_t which, char *value);

// Write the contents of register WHICH into VALUE as raw bytes
extern int put_register_as_bytes(regnames_t which, char *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.
extern void __single_step(void);

// Clear the single-step state
extern 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);

// We have to rewind the PC in case of a breakpoint.
#define HAL_STUB_PLATFORM_STUBS_FIXUP()                         \
CYG_MACRO_START                                                 \
    if (CYGNUM_HAL_VECTOR_DEBUGTRAP == __get_trap_number())     \
    {                                                           \
        CYG_ADDRESS pc = get_register(PC) - HAL_BREAKINST_SIZE; \
        put_register(PC, pc);                                   \
    }                                                           \
CYG_MACRO_END

#ifdef __cplusplus
}      // extern "C"
#endif

// ---------------------------------------------------------------------------
// End of coldfire_stub.h
#endif // ifndef CYGONCE_HAL_COLDFIRE_STUB_H