projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| bb9af06a | 1 | /* psl.h 4.4 81/04/22 */ |
| 21f9ed82 BJ |
2 | |
| 3 | /* | |
| 4 | * VAX program status longword | |
| 5 | */ | |
| 6 | ||
| fc7e4e57 BJ |
7 | #define PSL_C 0x00000001 /* carry bit */ |
| 8 | #define PSL_V 0x00000002 /* overflow bit */ | |
| 9 | #define PSL_Z 0x00000004 /* zero bit */ | |
| 10 | #define PSL_N 0x00000008 /* negative bit */ | |
| 11 | #define PSL_ALLCC 0x0000000f /* all cc bits - unlikely */ | |
| 12 | #define PSL_T 0x00000010 /* trace enable bit */ | |
| 13 | #define PSL_IV 0x00000020 /* integer overflow enable bit */ | |
| 14 | #define PSL_FU 0x00000040 /* floating point underflow enable */ | |
| 15 | #define PSL_DV 0x00000080 /* decimal overflow enable bit */ | |
| 16 | #define PSL_IPL 0x001f0000 /* interrupt priority level */ | |
| 17 | #define PSL_PRVMOD 0x00c00000 /* previous mode (all on is user) */ | |
| 18 | #define PSL_CURMOD 0x03000000 /* current mode (all on is user) */ | |
| 19 | #define PSL_IS 0x04000000 /* interrupt stack */ | |
| 20 | #define PSL_FPD 0x08000000 /* first part done */ | |
| 21f9ed82 BJ |
21 | #define PSL_TP 0x40000000 /* trace pending */ |
| 22 | #define PSL_CM 0x80000000 /* compatibility mode */ | |
| bb9af06a BJ |
23 | |
| 24 | #define PSL_MBZ 0x3020ff00 /* must be zero bits */ | |
| 25 | ||
| 26 | #define PSL_USERSET (PSL_PRVMOD|PSL_CURMOD) | |
| 27 | #define PSL_USERCLR (PSL_IS|PSL_IPL|PSL_MBZ) |