plf_stub.h

来自「eCos操作系统源码」· C头文件 代码 · 共 115 行

#ifndef CYGONCE_HAL_PLF_STUB_H
#define CYGONCE_HAL_PLF_STUB_H

//=============================================================================
//
//      plf_stub.h
//
//      Platform header for GDB stub support.
//
//=============================================================================
//####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
// 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.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   gthomas
// Contributors:jskov
// Date:        2001-09-14
// Purpose:     Platform HAL stub support for Fujitsu FRV-400
// Usage:       #include <cyg/hal/plf_stub.h>
//              
//####DESCRIPTIONEND####
//
//=============================================================================

#include <pkgconf/hal.h>
#include <cyg/infra/cyg_type.h>         // CYG_UNUSED_PARAM

//#include <cyg/hal/hal_io.h>             // IO macros
//#include <cyg/hal/hal_intr.h>           // Interrupt macros
#include <cyg/hal/frv_stub.h>            // architecture stub support

#ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
//----------------------------------------------------------------------------
// Define some platform specific communication details. This is mostly
// handled by hal_if now, but we need to make sure the comms tables are
// properly initialized.

externC void cyg_hal_plf_comms_init(void);

#define HAL_STUB_PLATFORM_INIT_SERIAL()       cyg_hal_plf_comms_init()
#define HAL_STUB_PLATFORM_SET_BAUD_RATE(baud) CYG_UNUSED_PARAM(int, (baud))
#define HAL_STUB_PLATFORM_INTERRUPTIBLE       0

//----------------------------------------------------------------------------
// Stub initializer.
#define HAL_STUB_PLATFORM_INIT()        CYG_EMPTY_STATEMENT

// ---------------------------------------------------------------------------
// Hardware breakpoint/watchpoint support
extern int   cyg_hal_plf_hw_breakpoint(int setflag, void *addr, int len);
extern int   cyg_hal_plf_hw_watchpoint(int setflag, void *addr, int len, int type);
extern int   cyg_hal_plf_is_stopped_by_hardware(void **paddr);

#define HAL_STUB_HW_BREAKPOINT_LIST_SIZE 4
#define HAL_STUB_HW_WATCHPOINT_LIST_SIZE 2

#define HAL_STUB_HW_BREAKPOINT(f,a,l)      cyg_hal_plf_hw_breakpoint((f),(a),(l))
#define HAL_STUB_HW_WATCHPOINT(f,a,l,t)    cyg_hal_plf_hw_watchpoint((f),(a),(l),(t))
#define HAL_STUB_IS_STOPPED_BY_HARDWARE(p) cyg_hal_plf_is_stopped_by_hardware(&(p))

#endif // ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS

// ------------------------------------------------------------------------
// Horrid stuff to enter and exit debug mode

#define HAL_FRV_ENTER_DEBUG_MODE() asm volatile ("break" : : : "lr")

#define HAL_FRV_EXIT_DEBUG_MODE()				\
    asm volatile (                                              \
     "\t call   10f           \n"                               \
  "10:\t movsg  lr, gr6       \n" /* get local addr */          \
     "\t addi   gr6, #16, gr6 \n" /* skip past rett */          \
     "\t movgs  gr6, bpcsr    \n" /* Break PC save reg */       \
     "\t rett   #1            \n"                               \
         :                                                      \
         :                                                      \
         : "gr6","lr" /* clobber list */                        \
        )


//-----------------------------------------------------------------------------
#endif // CYGONCE_HAL_PLF_STUB_H
// End of plf_stub.h