HelenOS sources
cp0_status_ie_enabled_bit 59 kernel/arch/mips32/src/interrupt.c cp0_status_write(ipl & ~cp0_status_ie_enabled_bit);
cp0_status_ie_enabled_bit 70 kernel/arch/mips32/src/interrupt.c cp0_status_write(ipl | cp0_status_ie_enabled_bit);
cp0_status_ie_enabled_bit 80 kernel/arch/mips32/src/interrupt.c cp0_status_write(cp0_status_read() | (ipl & cp0_status_ie_enabled_bit));
cp0_status_ie_enabled_bit 99 kernel/arch/mips32/src/interrupt.c return !(cp0_status_read() & cp0_status_ie_enabled_bit);
cp0_status_ie_enabled_bit 174 kernel/arch/mips32/src/mips32.c cp0_status_um_bit | cp0_status_ie_enabled_bit));
HelenOS homepage, sources at GitHub