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[/] [openrisc/] [trunk/] [rtos/] [ecos-3.0/] [packages/] [hal/] [h8300/] [h8s/] [current/] [src/] [h8s_stub.c] - Blame information for rev 786

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1 786 skrzyp
//========================================================================
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//
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//      h8s_stub.c
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//
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//      Helper functions for H8S stub
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//
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//========================================================================
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// ####ECOSGPLCOPYRIGHTBEGIN####                                            
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// -------------------------------------------                              
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// This file is part of eCos, the Embedded Configurable Operating System.   
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under    
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// the terms of the GNU General Public License as published by the Free     
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// Software Foundation; either version 2 or (at your option) any later      
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// version.                                                                 
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT      
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or    
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// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    
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// for more details.                                                        
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//
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// You should have received a copy of the GNU General Public License        
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// along with eCos; if not, write to the Free Software Foundation, Inc.,    
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// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            
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//
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// As a special exception, if other files instantiate templates or use      
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// macros or inline functions from this file, or you compile this file      
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// and link it with other works to produce a work based on this file,       
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// this file does not by itself cause the resulting work to be covered by   
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// the GNU General Public License. However the source code for this file    
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// must still be made available in accordance with section (3) of the GNU   
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// General Public License v2.                                               
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//
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// This exception does not invalidate any other reasons why a work based    
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// on this file might be covered by the GNU General Public License.         
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// -------------------------------------------                              
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// ####ECOSGPLCOPYRIGHTEND####                                              
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//========================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s):     Yoshinori Sato
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// Contributors:  Yoshinori Sato
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// Date:          2002-05-03
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// Purpose:       
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// Description:   Helper functions for H8S stub
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// Usage:         
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//
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//####DESCRIPTIONEND####
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//
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//========================================================================
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#include <stddef.h>
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#include <pkgconf/hal.h>
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#ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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#include <cyg/hal/hal_stub.h>
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#include <cyg/hal/hal_arch.h>
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#include <cyg/hal/hal_intr.h>
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#ifdef CYGDBG_HAL_DEBUG_GDB_THREAD_SUPPORT
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#include <cyg/hal/dbg-threads-api.h>    // dbg_currthread_id
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#endif
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/*--------------------------------------------------------------------*/
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/* Given a trap value TRAP, return the corresponding signal. */
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int __computeSignal (unsigned int trap_number)
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{
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    switch (trap_number) {
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    case CYGNUM_HAL_VECTOR_TRACE:
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    case CYGNUM_HAL_VECTOR_TRAP3:
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        return SIGTRAP;
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    default:
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        return SIGINT;
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    }
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}
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/*--------------------------------------------------------------------*/
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/* Return the trap number corresponding to the last-taken trap. */
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int __get_trap_number (void)
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{
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    extern int CYG_LABEL_NAME(_intvector);
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    // The vector is not not part of the GDB register set so get it
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    // directly from the save context.
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    return CYG_LABEL_NAME(_intvector);
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}
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/*--------------------------------------------------------------------*/
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/* Set the currently-saved pc register value to PC. This also updates NPC
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   as needed. */
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void set_pc (target_register_t pc)
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{
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    put_register (PC, pc);
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}
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/*----------------------------------------------------------------------
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 * Single-step support.
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 */
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/* Clear any single-step breakpoint(s) that may have been set.  */
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void __clear_single_step (void)
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{
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    int exr;
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    exr = get_register(EXR);
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    exr &= 0x7f;  /* clear T flag */
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    put_register(EXR,exr);
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}
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/* Set breakpoint(s) to simulate a single step from the current PC.  */
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void __single_step (void)
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{
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    int exr;
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    exr = get_register(EXR);
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    exr |= 0x80;  /* set T flag */
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    put_register(EXR,exr);
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}
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void __install_breakpoints (void)
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{
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    /* NOP since single-step HW exceptions are used instead of
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       breakpoints. */
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}
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void __clear_breakpoints (void)
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{
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}
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/* If the breakpoint we hit is in the breakpoint() instruction, return a
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   non-zero value. */
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externC void CYG_LABEL_NAME(breakinst)(void);
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int
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__is_breakpoint_function ()
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{
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    return get_register (PC) == (target_register_t)&CYG_LABEL_NAME(breakinst);
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}
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/* Skip the current instruction. */
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/* only TRAPA instruction */
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void __skipinst (void)
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{
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    put_register (PC, get_register(PC) + 2);
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}
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#endif // CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS

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