Subversion Repositories openrisc_2011-10-31

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

//

//      mips-mon.c

//

//      Support code to extend the generic monitor code to support

//      MIPS processors.

//

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

//####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.

//

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// 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):    dmoseley

// Contributors: dmoseley

// Date:         2000-06-07

// Purpose:      Support code to extend the generic monitor code to support

//               MIPS(R) processors.

// Description:  Further board specific support is in other files.

//               This file contains:

//                 register names lookup table

//

//               Empty Stubs:

//                 Interval timer - This should really belong to the application

//                 operating system.

//

//               Should not contain:

//                 low level uart getchar and putchar functions

//                 delay function to support uart

//

//####DESCRIPTIONEND####

//

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

#include "monitor.h"

struct regstruct regtab[] =

{

    { "zero",      REG_ZERO },

    { "at",        REG_AT },

    { "v0",        REG_V0 },

    { "v1",        REG_V1 },

    { "a0",        REG_A0 },

    { "a1",        REG_A1 },

    { "a2",        REG_A2 },

    { "a3",        REG_A3 },

    { "t0",        REG_T0 },

    { "t1",        REG_T1 },

    { "t2",        REG_T2 },

    { "t3",        REG_T3 },

    { "t4",        REG_T4 },

    { "t5",        REG_T5 },

    { "t6",        REG_T6 },

    { "t7",        REG_T7 },

    { "s0",        REG_S0 },

    { "s1",        REG_S1 },

    { "s2",        REG_S2 },

    { "s3",        REG_S3 },

    { "s4",        REG_S4 },

    { "s5",        REG_S5 },

    { "s6",        REG_S6 },

    { "s7",        REG_S7 },

    { "t8",        REG_T8 },

    { "t9",        REG_T9 },

    { "k0",        REG_K0 },

    { "k1",        REG_K1 },

    { "gp",        REG_GP },

    { "sp",        REG_SP },

    { "s8",        REG_S8 },

    { "ra",        REG_RA },

    { "sr",        REG_SR },

    { "lo",        REG_LO },

    { "hi",        REG_HI },

    { "badvr",     REG_BAD },

    { "cause",     REG_CAUSE },

    { "pc",        REG_PC },

#ifdef CYGHWR_HAL_MIPS_FPU

    { "f0",        REG_F0 },

    { "f1",        REG_F1 },

    { "f2",        REG_F2 },

    { "f3",        REG_F3 },

    { "f4",        REG_F4 },

    { "f5",        REG_F5 },

    { "f6",        REG_F6 },

    { "f7",        REG_F7 },

    { "f8",        REG_F8 },

    { "f9",        REG_F9 },

    { "f10",       REG_F10 },

    { "f11",       REG_F11 },

    { "f12",       REG_F12 },

    { "f13",       REG_F13 },

    { "f14",       REG_F14 },

    { "f15",       REG_F15 },

    { "f16",       REG_F16 },

    { "f17",       REG_F17 },

    { "f18",       REG_F18 },

    { "f19",       REG_F19 },

    { "f20",       REG_F20 },

    { "f21",       REG_F21 },

    { "f22",       REG_F22 },

    { "f23",       REG_F23 },

    { "f24",       REG_F24 },

    { "f25",       REG_F25 },

    { "f26",       REG_F26 },

    { "f27",       REG_F27 },

    { "f28",       REG_F28 },

    { "f29",       REG_F29 },

    { "f30",       REG_F30 },

    { "f31",       REG_F31 },

    { "fcr31",     REG_FCR31 },

#endif /* CYGHWR_HAL_MIPS_FPU */

    { 0, 0 }, /* Terminating element must be last */

} ;

void

initialize_mon(void)

{

} /* initialize_mon */

#include <cyg/hal/hal_arch.h>

#include <bsp/common/bsp_if.h>

int

machine_syscall(HAL_SavedRegisters *regs)

{

    int res, err;

    target_register_t a0, a1, a2, a3;

    a0 = get_register(REG_A0);

    a1 = get_register(REG_A1);

    a2 = get_register(REG_A2);

    a3 = get_register(REG_A3);

    err = _bsp_do_syscall(a0, // Function

                          a1, a2, a3, 0, // arguments,

                          &res);

    if (err)

    {

        // This was a syscall.  It has now been handled, so update the registers appropriately

        put_register(REG_V0, res);

        bsp_skip_instruction(regs);

    }

    return err;

}

// Utility function for printing breakpoints

void bp_print(target_register_t bp_val)

{

    bsp_printf("0x%08lx\n", (unsigned long)bp_val);

}