pc386/console/gdb_glue.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*  gdb_glue
0004  *
0005  *  Interface to initialize the GDB.
0006  *
0007  *  COPYRIGHT (c) 1989-1998.
0008  *  On-Line Applications Research Corporation (OAR).
0009  *
0010  * Redistribution and use in source and binary forms, with or without
0011  * modification, are permitted provided that the following conditions
0012  * are met:
0013  * 1. Redistributions of source code must retain the above copyright
0014  *    notice, this list of conditions and the following disclaimer.
0015  * 2. Redistributions in binary form must reproduce the above copyright
0016  *    notice, this list of conditions and the following disclaimer in the
0017  *    documentation and/or other materials provided with the distribution.
0018  *
0019  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0020  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0021  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0022  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0023  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0024  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0025  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0026  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0027  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0028  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0029  * POSSIBILITY OF SUCH DAMAGE.
0030  */
0031
0032 #include <bsp.h>
0033 #include <stdio.h>
0034 #include <uart.h>
0035
0036 #define BREAKPOINT() __asm__ ("   int $3");
0037
0038 extern int BSPConsolePort;
0039 void i386_stub_glue_init(int);
0040 void i386_stub_glue_init_breakin(void);
0041 void set_debug_traps(void);
0042
0043  /* Init GDB glue  */
0044 void init_remote_gdb( void )
0045 {
0046   if(BSPConsolePort != BSP_UART_COM2)
0047     {
0048       /*
0049        * If com2 is not used as console use it for
0050        * debugging
0051        */
0052
0053       i386_stub_glue_init(BSP_UART_COM2);
0054       printf( "Remote GDB using COM2...\n" );
0055
0056     }
0057   else
0058     {
0059       /* Otherwise use com1 */
0060       i386_stub_glue_init(BSP_UART_COM1);
0061       printf( "Remote GDB using COM1...\n" );
0062     }
0063
0064   printf( "Remote GDB: setting traps...\n" );
0065   /* Init GDB stub itself */
0066   set_debug_traps();
0067
0068   printf( "Remote GDB: waiting remote connection....\n" );
0069
0070   /*
0071    * Init GDB break in capability,
0072    * has to be called after
0073    * set_debug_traps
0074    */
0075   i386_stub_glue_init_breakin();
0076
0077   /* Put breakpoint in */
0078   /* breakpoint();     */
0079   /* BREAKPOINT();     */
0080 }