File:trap.c - ikarishinjieva/unixV6-code-analyze-chs GitHub Wiki

2650 #

2651 #include "../param.h"

2652 #include "../systm.h"

2653 #include "../user.h"

2654 #include "../proc.h"

2655 #include "../reg.h"

2656 #include "../seg.h"

2657

2658 #define EBIT 1 /* user error bit in PS: C-bit */

2659 #define UMODE 0170000 /* user-mode bits in PS word */

2660 #define SETD 0170011 /* SETD instruction */

2661 #define SYS 0104400 /* sys (trap) instruction */

2662 #define USER 020 /* user-mode flag added to dev */