Index: arch/posix.h
==================================================================
--- arch/posix.h
+++ arch/posix.h
@@ -43,10 +43,11 @@
 	/* platform flags */
 	posix_flag_linux_hugetlb = 0x40000
 };
 
 enum posix_signal {
+	/* common signal numbers across arches and OSes */
 	posix_signal_hangup = 1,
 	posix_signal_interrupt = 2,
 	posix_signal_quit = 3,
 	posix_signal_illegal = 4,
 	posix_signal_trap = 5,
@@ -56,11 +57,11 @@
 	posix_signal_segfault = 11,
 	posix_signal_pipe = 13,
 	posix_signal_alarm = 14,
 	posix_signal_terminate = 15,
 
-#if KVarch == KA_arch_mips
+#if KVarch == KA_arch_mips && KVos == KA_os_lin
 	/* for some ungodly reason, some signal
 	 * numbers on MIPS differ from most other
 	 * architectures still in contemporary use */
 	posix_signal_bus = 10,
 	posix_signal_user_a = 16,
@@ -77,11 +78,11 @@
 	posix_signal_vt_alarm = 28,
 	posix_signal_profile = 29,
 	posix_signal_winch = 20,
 	posix_signal_poll = 22,
 	posix_signal_power = 19,
-#else
+#elif KVos == KA_os_lin
 	/* x86, ARM, and most others use these
 	 * signal numbers */
 	posix_signal_bus = 7,
 	posix_signal_user_a = 10,
 	posix_signal_user_b = 12,
@@ -97,10 +98,30 @@
 	posix_signal_limit_space = 25,
 	posix_signal_vt_alarm = 26,
 	posix_signal_profile = 27,
 	posix_signal_winch = 28,
 	posix_signal_poll = 29,
+	posix_signal_power = 30,
+#elif KVos == KA_os_fbsd
+	posix_signal_bus = 10,
+	posix_signal_user_a = 30,
+	posix_signal_user_b = 31,
+	posix_signal_child = 17,
+	posix_signal_continue = 19,
+	posix_signal_stack_fault = 16,
+	posix_signal_stop = 17,
+	posix_signal_terminal_stop = 18,
+	posix_signal_tty_input = 21,
+	posix_signal_tty_output = 22,
+	posix_signal_io_urgent = 16,
+	posix_signal_limit_cpu = 24,
+	posix_signal_limit_space = 25,
+	posix_signal_vt_alarm = 26,
+	posix_signal_profile = 27,
+	posix_signal_winch = 28,
+	posix_signal_info = 29,
+	posix_signal_poll = 23,
 	posix_signal_power = 30,
 #endif
 };
 
 #endif