Add ddb commands: machine {abort|halt|reboot}
This commit is contained in:
gwr
parent
a3df365e06
commit
dd81695cb9
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/* $NetBSD: db_machdep.h,v 1.6 1994/11/21 21:33:34 gwr Exp $ */
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/* $NetBSD: db_machdep.h,v 1.7 1995/02/07 04:34:45 gwr Exp $ */
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#include <m68k/db_machdep.h>
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/* This enables some code in db_command.c */
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#define DB_MACHINE_COMMANDS
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/* $NetBSD: db_machdep.c,v 1.1 1995/02/07 04:39:39 gwr Exp $ */
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/*
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* Copyright (c) 1994, 1995 Gordon W. Ross
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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* 4. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Gordon Ross
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Machine-dependent functions used by ddb
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*/
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <vm/vm.h>
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#include <machine/db_machdep.h>
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#include <ddb/db_command.h>
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#include <machine/pte.h>
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/*
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* Interface to the debugger for virtual memory read/write.
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*
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* To write in the text segment, we have to first make
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* the page writable, do the write, then restore the PTE.
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* For writes outside the text segment, and all reads,
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* just do the access -- if it causes a fault, the debugger
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* will recover with a longjmp to an appropriate place.
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*/
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/*
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* Read bytes from kernel address space for debugger.
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* This used to check for valid PTEs, but now that
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* traps in DDB work correctly, "Just Do It!"
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*/
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void
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db_read_bytes(addr, size, data)
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vm_offset_t addr;
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register int size;
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register char *data;
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{
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register char *src;
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src = (char *)addr;
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while (--size >= 0)
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*data++ = *src++;
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}
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/*
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* Write one byte somewhere in kernel text.
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* It does not matter if this is slow. -gwr
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*/
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static void
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db_write_text(dst, ch)
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char *dst;
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int ch;
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{
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int oldpte, tmppte;
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vm_offset_t pgva;
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pgva = sun3_trunc_page((long)dst);
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oldpte = get_pte(pgva);
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if ((oldpte & PG_VALID) == 0) {
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db_printf(" address 0x%x not a valid page\n", dst);
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return;
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}
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tmppte = oldpte | PG_WRITE;
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set_pte(pgva, tmppte);
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*dst = (char) ch;
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set_pte(pgva, oldpte);
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}
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/*
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* Write bytes to kernel address space for debugger.
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*/
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void
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db_write_bytes(addr, size, data)
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vm_offset_t addr;
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int size;
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char *data;
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{
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extern char start[], etext[] ;
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char *dst;
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dst = (char *)addr;
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while (--size >= 0) {
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if ((dst >= start) && (dst < etext))
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db_write_text(dst, *data);
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else
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*dst = *data;
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dst++; data++;
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}
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}
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/*
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* Machine-specific ddb commands for the sun3:
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* abort: Drop into monitor via abort (allows continue)
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* halt: Exit to monitor as in halt(8)
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* reboot: Reboot the machine as in reboot(8)
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*/
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extern void sun3_mon_abort();
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extern void sun3_mon_halt();
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void
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db_mon_reboot()
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{
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sun3_mon_reboot("");
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}
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struct db_command db_machine_cmds[] = {
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{ "abort", sun3_mon_abort, 0, 0 },
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{ "halt", sun3_mon_halt, 0, 0 },
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{ "reboot", db_mon_reboot, 0, 0 },
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{ (char *)0, }
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};
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/*
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* This is called before ddb_init() to install the
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* machine-specific command table. (see machdep.c)
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*/
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void
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db_machine_init()
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{
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db_machine_commands_install(db_machine_cmds);
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}
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@ -1,7 +1,7 @@
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/* $NetBSD: db_memrw.c,v 1.6 1994/12/12 18:59:58 gwr Exp $ */
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/* $NetBSD: db_memrw.c,v 1.7 1995/02/07 04:37:48 gwr Exp $ */
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/*
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* Copyright (c) 1994 Gordon W. Ross
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* Copyright (c) 1994, 1995 Gordon W. Ross
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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@ -14,6 +14,9 @@
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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* 4. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Gordon Ross
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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@ -28,12 +31,7 @@
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*/
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/*
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* Interface to the debugger for virtual memory read/write.
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* To write in the text segment, we have to first make
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* the page writable, do the write, then restore the PTE.
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* For writes outside the text segment, and all reads,
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* just do the access -- if it causes a fault, the debugger
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* will recover with a longjmp to an appropriate place.
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* Machine-dependent functions used by ddb
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*/
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#include <sys/param.h>
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@ -42,8 +40,20 @@
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#include <vm/vm.h>
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#include <machine/db_machdep.h>
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#include <ddb/db_command.h>
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#include <machine/pte.h>
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/*
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* Interface to the debugger for virtual memory read/write.
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*
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* To write in the text segment, we have to first make
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* the page writable, do the write, then restore the PTE.
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* For writes outside the text segment, and all reads,
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* just do the access -- if it causes a fault, the debugger
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* will recover with a longjmp to an appropriate place.
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*/
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/*
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* Read bytes from kernel address space for debugger.
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* This used to check for valid PTEs, but now that
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@ -111,3 +121,37 @@ db_write_bytes(addr, size, data)
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dst++; data++;
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}
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}
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/*
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* Machine-specific ddb commands for the sun3:
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* abort: Drop into monitor via abort (allows continue)
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* halt: Exit to monitor as in halt(8)
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* reboot: Reboot the machine as in reboot(8)
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*/
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extern void sun3_mon_abort();
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extern void sun3_mon_halt();
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void
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db_mon_reboot()
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{
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sun3_mon_reboot("");
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}
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struct db_command db_machine_cmds[] = {
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{ "abort", sun3_mon_abort, 0, 0 },
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{ "halt", sun3_mon_halt, 0, 0 },
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{ "reboot", db_mon_reboot, 0, 0 },
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{ (char *)0, }
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};
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/*
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* This is called before ddb_init() to install the
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* machine-specific command table. (see machdep.c)
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*/
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void
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db_machine_init()
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{
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db_machine_commands_install(db_machine_cmds);
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: locore2.c,v 1.31 1995/01/18 17:22:42 gwr Exp $ */
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/* $NetBSD: locore2.c,v 1.32 1995/02/07 04:39:42 gwr Exp $ */
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/*
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* Copyright (c) 1994 Gordon W. Ross
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@ -142,7 +142,7 @@ static void sun3_mode_normal()
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* also put our hardware state back into place after
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* the PROM "c" (continue) command is given.
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*/
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void sun3_rom_abort()
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void sun3_mon_abort()
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{
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int s = splhigh();
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@ -158,7 +158,7 @@ void sun3_rom_abort()
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* and then do a trap. Needs PROM vector table in RAM.
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*/
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old_vector_table[32] = (int)romp->abortEntry;
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asm(" trap #0 ; _sun3_rom_continued: nop");
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asm(" trap #0 ; _sun3_mon_continued: nop");
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/* We have continued from a PROM abort! */
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@ -166,7 +166,7 @@ void sun3_rom_abort()
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splx(s);
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}
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void sun3_rom_halt()
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void sun3_mon_halt()
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{
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(void) splhigh();
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sun3_mode_monitor();
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@ -174,7 +174,7 @@ void sun3_rom_halt()
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/*NOTREACHED*/
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}
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void sun3_rom_reboot(bootstring)
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void sun3_mon_reboot(bootstring)
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char *bootstring;
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{
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(void) splhigh();
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@ -1,4 +1,4 @@
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/* $NetBSD: machdep.c,v 1.44 1995/01/24 06:18:16 gwr Exp $ */
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/* $NetBSD: machdep.c,v 1.45 1995/02/07 04:39:41 gwr Exp $ */
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/*
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* Copyright (c) 1994 Gordon W. Ross
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@ -402,7 +402,8 @@ void consinit()
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cninit();
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#ifdef DDB
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/* Well, this is where the hp300 does it... -gwr */
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/* Now that we have a console, we can stop in DDB. */
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db_machine_init();
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ddb_init();
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if (boothowto & RB_KDB)
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Debugger();
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@ -1163,7 +1164,7 @@ static int reboot2(howto, user_boot_string)
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if (howto & RB_HALT) {
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printf("Kernel halted.\n");
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sun3_rom_halt();
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sun3_mon_halt();
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}
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/*
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@ -1193,7 +1194,7 @@ static int reboot2(howto, user_boot_string)
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}
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}
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printf("Kernel rebooting...\n");
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sun3_rom_reboot(bs);
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sun3_mon_reboot(bs);
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/*NOTREACHED*/
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: sun3_startup.c,v 1.31 1995/01/18 17:22:42 gwr Exp $ */
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/* $NetBSD: sun3_startup.c,v 1.32 1995/02/07 04:39:42 gwr Exp $ */
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/*
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* Copyright (c) 1994 Gordon W. Ross
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@ -142,7 +142,7 @@ static void sun3_mode_normal()
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* also put our hardware state back into place after
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* the PROM "c" (continue) command is given.
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*/
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void sun3_rom_abort()
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void sun3_mon_abort()
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{
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int s = splhigh();
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@ -158,7 +158,7 @@ void sun3_rom_abort()
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* and then do a trap. Needs PROM vector table in RAM.
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*/
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old_vector_table[32] = (int)romp->abortEntry;
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asm(" trap #0 ; _sun3_rom_continued: nop");
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asm(" trap #0 ; _sun3_mon_continued: nop");
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/* We have continued from a PROM abort! */
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@ -166,7 +166,7 @@ void sun3_rom_abort()
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splx(s);
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}
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void sun3_rom_halt()
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void sun3_mon_halt()
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{
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(void) splhigh();
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sun3_mode_monitor();
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@ -174,7 +174,7 @@ void sun3_rom_halt()
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/*NOTREACHED*/
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}
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void sun3_rom_reboot(bootstring)
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void sun3_mon_reboot(bootstring)
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char *bootstring;
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{
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(void) splhigh();
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