Add a new 'why' argument to kdb_enter(), and a set of constants to use

for that argument.  This will allow DDB to detect the broad category of
reason why the debugger has been entered, which it can use for the
purposes of deciding which DDB script to run.

Assign approximate why values to all current consumers of the
kdb_enter() interface.

3 files changed, 6 insertions, 6 deletions

diff --git a/sys/sun4v/sun4v/hvcons.c b/sys/sun4v/sun4v/hvcons.c
index 201b22c..3329d05 100644
--- a/sys/sun4v/sun4v/hvcons.c
+++ b/sys/sun4v/sun4v/hvcons.c
@@ -224,10 +224,10 @@ hvcn_cngetc(struct consdev *cp)
 	while ((l = hv_cons_getchar(&ch)) != H_EOK) {
 #if defined(KDB)
 		if (l == H_BREAK || l ==  H_HUP)
-			kdb_enter("Break sequence on console");
+			kdb_enter(KDB_WHY_BREAK, "Break sequence on console");
 
 	if (kdb_alt_break(ch, &alt_break_state))
-		kdb_enter("Break sequence on console");
+		kdb_enter(KDB_WHY_BREAK, "Break sequence on console");
 #endif
 		if (l != -2 && l != 0) {
 			return (-1);
@@ -248,9 +248,9 @@ hvcn_cncheckc(struct consdev *cp)
 	if ((l = hv_cons_getchar(&ch)) == H_EOK) {
 #if defined(KDB)
 		if (l == H_BREAK || l ==  H_HUP)
-			kdb_enter("Break sequence on console");
+			kdb_enter(KDB_WHY_BREAK, "Break sequence on console");
 		if (kdb_alt_break(ch, &alt_break_state))
-			kdb_enter("Break sequence on console");
+			kdb_enter(KDB_WHY_BREAK, "Break sequence on console");
 #endif
 		return (ch);
 	}
diff --git a/sys/sun4v/sun4v/machdep.c b/sys/sun4v/sun4v/machdep.c
index 16a508a..1d0bf66 100644
--- a/sys/sun4v/sun4v/machdep.c
+++ b/sys/sun4v/sun4v/machdep.c
@@ -510,7 +510,7 @@ sparc64_init(caddr_t mdp, u_long o1, u_long o2, u_long o3, ofw_vec_t *vec)
 
 #ifdef KDB
 	if (boothowto & RB_KDB)
-		kdb_enter("Boot flags requested debugger");
+		kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
 #endif
 	BVPRINTF("sparc64_init done\n");
 }
diff --git a/sys/sun4v/sun4v/trap.c b/sys/sun4v/sun4v/trap.c
index 75d5ce0..f04c424 100644
--- a/sys/sun4v/sun4v/trap.c
+++ b/sys/sun4v/sun4v/trap.c
@@ -366,7 +366,7 @@ trap(struct trapframe *tf, int64_t type, uint64_t data)
 			}
 			if (debugger_on_signal &&
 			    (sig == 4 || sig == 10 || sig == 11))
-				kdb_enter("trapsig");
+				kdb_enter(KDB_WHY_TRAPSIG, "trapsig");
 #ifdef VERBOSE
 			if (sig == 4 || sig == 10 || sig == 11)
 				printf("trap: %ld:%s: 0x%lx at 0x%lx on cpu=%d sig=%d proc=%s\n",