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Added machine command for reporting panic related information. 

Trap undefined instructions that are used for breakpoints for all
processors modes. If the mode was USR32 then post a SIGTRAP signal.
This commit is contained in:
mark 1996-08-29 22:23:45 +00:00
parent 2fb1f405f7
commit 7568e05e32
1 changed files with 10 additions and 3 deletions
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11
sys/arch/arm32/arm32/db_interface.c
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@ -1,4 +1,4 @@
/* $NetBSD: db_interface.c,v 1.8 1996/06/12 19:57:08 mark Exp $ */
/* $NetBSD: db_interface.c,v 1.9 1996/08/29 22:23:45 mark Exp $ */
/*
* Copyright (c) 1996 Scott K. Stevens
@ -236,12 +236,14 @@ void db_show_vmstat_cmd __P((db_expr_t addr, int have_addr, db_expr_t count, cha
void db_show_fs_cmd __P((db_expr_t addr, int have_addr, db_expr_t count, char *modif));
void db_show_vnode_cmd __P((db_expr_t addr, int have_addr, db_expr_t count, char *modif));
void db_show_intrchain_cmd __P((db_expr_t addr, int have_addr, db_expr_t count, char *modif));
void db_show_panic_cmd __P((db_expr_t addr, int have_addr, db_expr_t count, char *modif));
struct db_command arm32_db_command_table[] = {
{ "vmstat", db_show_vmstat_cmd, 0, NULL },
{ "fs", db_show_fs_cmd, 0, NULL },
{ "vnode", db_show_vnode_cmd, 0, NULL },
{ "intrchain", db_show_intrchain_cmd, 0, NULL },
{ "panic", db_show_panic_cmd, 0, NULL },
{ NULL, NULL, 0, NULL }
};
@ -251,8 +253,13 @@ db_trapper(addr, inst, frame)
u_int inst;
trapframe_t *frame;
{
/* db_printf("db_trapper\n");*/
if ((frame->tf_spsr & PSR_MODE) != PSR_USR32_MODE) {
if (inst == BKPT_INST)
kdb_trap(1, frame);
else
panic("Undefined instruction 0x%08x @ 0x%08x in kernel\n", inst, addr);
} else
trapsignal(curproc, SIGTRAP, 0);
return(0);
}