1 /* 2 * 386 processor status longword. 3 */ 4 #define PSL_C 0x00000001 /* carry bit */ 5 #define PSL_PF 0x00000004 /* parity bit */ 6 #define PSL_AF 0x00000010 /* bcd carry bit */ 7 #define PSL_Z 0x00000040 /* zero bit */ 8 #define PSL_N 0x00000080 /* negative bit */ 9 #define PSL_ALLCC 0x000000d5 /* all cc bits - unlikely */ 10 #define PSL_T 0x00000100 /* trace enable bit */ 11 #define PSL_I 0x00000200 /* interrupt enable bit */ 12 #define PSL_D 0x00000400 /* string instruction direction bit */ 13 #define PSL_V 0x00000800 /* overflow bit */ 14 #define PSL_IOPL 0x00003000 /* i/o priviledge level enable */ 15 #define PSL_NT 0x00004000 /* nested task bit */ 16 #define PSL_RF 0x00010000 /* restart flag bit */ 17 #define PSL_VM 0x00020000 /* virtual 8086 mode bit */ 18 19 #define PSL_MBZ 0xfffc7fb7 /* must be zero bits */ 20 #define PSL_MBO 0x00000002 /* must be one bits */ 21 22 #define PSL_USERSET (PSL_IOPL) 23 #define PSL_USERCLR (PSL_I|PSL_NT) 24