1 // x86 trap and interrupt constants. 2 3 // Processor-defined: 4 #define T_DIVIDE 0 // divide error 5 #define T_DEBUG 1 // debug exception 6 #define T_NMI 2 // non-maskable interrupt 7 #define T_BRKPT 3 // breakpoint 8 #define T_OFLOW 4 // overflow 9 #define T_BOUND 5 // bounds check 10 #define T_ILLOP 6 // illegal opcode 11 #define T_DEVICE 7 // device not available 12 #define T_DBLFLT 8 // double fault 13 // #define T_COPROC 9 // reserved (not used since 486) 14 #define T_TSS 10 // invalid task switch segment 15 #define T_SEGNP 11 // segment not present 16 #define T_STACK 12 // stack exception 17 #define T_GPFLT 13 // general protection fault 18 #define T_PGFLT 14 // page fault 19 // #define T_RES 15 // reserved 20 #define T_FPERR 16 // floating point error 21 #define T_ALIGN 17 // aligment check 22 #define T_MCHK 18 // machine check 23 #define T_SIMDERR 19 // SIMD floating point error 24 25 // These are arbitrarily chosen, but with care not to overlap 26 // processor defined exceptions or interrupt vectors. 27 #define T_SYSCALL 64 // system call 28 #define T_DEFAULT 500 // catchall 29 30 #define T_IRQ0 32 // IRQ 0 corresponds to int T_IRQ 31 32 #define IRQ_TIMER 0 33 #define IRQ_KBD 1 34 #define IRQ_COM1 4 35 #define IRQ_IDE 14 36 #define IRQ_ERROR 19 37 #define IRQ_SPURIOUS 31 38 39