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Add "mach reset" command that resets machine by taking a trap with

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exceptions disabled.  Fix db_stackcheck_cmd (have_addr is now bool).
Supply help strings for mach commands.
This commit is contained in:
uwe 2008-03-15 01:03:40 +00:00
parent 9e8ca25d60
commit 2e62be9d52
1 changed files with 41 additions and 11 deletions
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52
sys/arch/sh3/sh3/db_interface.c
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@ -1,4 +1,4 @@
/* $NetBSD: db_interface.c,v 1.46 2007/12/14 00:58:37 uwe Exp $ */
/* $NetBSD: db_interface.c,v 1.47 2008/03/15 01:03:40 uwe Exp $ */
/*-
* Copyright (C) 2002 UCHIYAMA Yasushi. All rights reserved.
@ -28,7 +28,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: db_interface.c,v 1.46 2007/12/14 00:58:37 uwe Exp $");
__KERNEL_RCSID(0, "$NetBSD: db_interface.c,v 1.47 2008/03/15 01:03:40 uwe Exp $");
#include "opt_ddb.h"
#include "opt_kgdb.h"
@ -85,19 +85,36 @@ static void db_frame_cmd(db_expr_t, bool, db_expr_t, const char *);
static void __db_print_symbol(db_expr_t);
static void __db_print_tfstack(struct trapframe *, struct trapframe *);
static void db_reset_cmd(db_expr_t, bool, db_expr_t, const char *);
#ifdef KSTACK_DEBUG
static void db_stackcheck_cmd(db_expr_t, bool, db_expr_t, const char *);
#endif
const struct db_command db_machine_command_table[] = {
{ DDB_ADD_CMD("tlb", db_tlbdump_cmd, 0, NULL, NULL,NULL) },
{ DDB_ADD_CMD("cache", db_cachedump_cmd, 0, NULL, NULL,NULL) },
{ DDB_ADD_CMD("frame", db_frame_cmd, 0, NULL, NULL,NULL) },
{ DDB_ADD_CMD("cache", db_cachedump_cmd, 0,
"Dump contents of the cache address array.",
"[address]",
" address: if specified, dump only matching entries" ) },
{ DDB_ADD_CMD("frame", db_frame_cmd, 0,
"Dump switch frame and trap frames of curlwp.",
NULL, NULL) },
{ DDB_ADD_CMD("reset", db_reset_cmd, 0,
"Reset machine (by taking a trap with exceptions disabled).",
NULL, NULL) },
#ifdef KSTACK_DEBUG
{ DDB_ADD_CMD("stack", db_stackcheck_cmd, 0, NULL, NULL,NULL) },
{ DDB_ADD_CMD("stack", db_stackcheck_cmd, 0,
"Dump kernel stacks of all lwps.",
NULL, NULL) },
#endif
{ DDB_ADD_CMD(NULL, NULL, 0, NULL, NULL,NULL) }
{ DDB_ADD_CMD("tlb", db_tlbdump_cmd, 0,
"Dump TLB contents.",
NULL, NULL) },
{ DDB_ADD_CMD(NULL, NULL, 0, NULL, NULL,NULL) }
};
int db_active;
@ -498,7 +515,7 @@ __db_cachedump_sh4(vaddr_t va)
}
db_printf("[I-cache]\n");
db_printf(" Entry V V V V\n");
db_printf(" Entry V V V V");
for (i = istart; i < iend; i++) {
if ((i & 3) == 0)
db_printf("\n[%3d-%3d] ", i, i + 3);
@ -506,8 +523,8 @@ __db_cachedump_sh4(vaddr_t va)
db_printf("%08x _%c ", r & CCIA_TAGADDR_MASK, ON(r, CCIA_V));
}
db_printf("\n[D-cache]\n");
db_printf(" Entry UV UV UV UV\n");
db_printf("\n\n[D-cache]\n");
db_printf(" Entry UV UV UV UV");
for (i = istart; i < iend; i++) {
if ((i & 3) == 0)
db_printf("\n[%3d-%3d] ", i, i + 3);
@ -630,7 +647,7 @@ __db_print_symbol(db_expr_t value)
* Stack overflow check
*/
static void
db_stackcheck_cmd(db_expr_t addr, int have_addr, db_expr_t count,
db_stackcheck_cmd(db_expr_t addr, bool have_addr, db_expr_t count,
const char *modif)
{
struct lwp *l;
@ -676,4 +693,17 @@ db_stackcheck_cmd(db_expr_t addr, int have_addr, db_expr_t count,
#undef MAX_FRAME
}
#endif /* KSTACK_DEBUG */
static void
db_reset_cmd(db_expr_t addr, bool have_addr, db_expr_t count,
const char *modif)
{
_cpu_exception_suspend();
asm volatile ("trapa #0xc3");
/* NOTREACHED, but just in case ... */
printf("Reset failed\n");
}
#endif /* !KGDB */