D26004.id75593.diff
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	Index: sys/powerpc/powerpc/trap.c
	===================================================================
	--- sys/powerpc/powerpc/trap.c
	+++ sys/powerpc/powerpc/trap.c
	@@ -153,6 +153,11 @@
	{ EXC_LAST, NULL }
	};

	+static int uprintf_signal;
	+SYSCTL_INT(_machdep, OID_AUTO, uprintf_signal, CTLFLAG_RWTUN,
	+ &uprintf_signal, 0,
	+ "Print debugging information on trap signal to ctty");
	+
	#define ESR_BITMASK \
	"\20" \
	"\040b0\037b1\036b2\035b3\034PIL\033PRR\032PTR\031FP" \
	@@ -483,13 +488,22 @@
	}

	if (sig != 0) {
	+ /* Translate fault for emulators (e.g. Linux) */
	if (p->p_sysent->sv_transtrap != NULL)
	sig = (p->p_sysent->sv_transtrap)(sig, type);
	+
	ksiginfo_init_trap(&ksi);
	ksi.ksi_signo = sig;
	ksi.ksi_code = (int) ucode; /* XXX, not POSIX */
	ksi.ksi_addr = (void *)addr;
	ksi.ksi_trapno = type;
	+
	+ if (uprintf_signal) {
	+ uprintf("pid %d comm %s: signal %d code %d type %d "
	+ "addr 0x%lx\n",
	+ p->p_pid, p->p_comm, sig, ucode, type, addr);
	+ }
	+
	trapsignal(td, &ksi);
	}