diff options
Diffstat (limited to 'trap.c')
| -rw-r--r-- | trap.c | 29 |
1 files changed, 18 insertions, 11 deletions
@@ -9,8 +9,8 @@ #include "spinlock.h" // Interrupt descriptor table (shared by all CPUs). -struct gatedesc idt[256]; -extern uint vectors[]; // in vectors.S: array of 256 entry pointers +struct intgate idt[256]; +extern uint64 vectors[]; // in vectors.S: array of 256 entry pointers struct spinlock tickslock; uint ticks; @@ -19,17 +19,22 @@ tvinit(void) { int i; - for(i = 0; i < 256; i++) - SETGATE(idt[i], 0, SEG_KCODE<<3, vectors[i], 0); - SETGATE(idt[T_SYSCALL], 1, SEG_KCODE<<3, vectors[T_SYSCALL], DPL_USER); - + for(i=0; i<256; i++) { + idt[i] = INTDESC(KCSEG, vectors[i], INT_P | SEG_INTR64); + } + idtinit(); + initlock(&tickslock, "time"); } void idtinit(void) { - lidt(idt, sizeof(idt)); + struct desctr dtr; + + dtr.limit = sizeof(idt) - 1; + dtr.base = (uint64)idt; + lidt((void *)&dtr.limit); } //PAGEBREAK: 41 @@ -74,7 +79,7 @@ trap(struct trapframe *tf) case T_IRQ0 + 7: case T_IRQ0 + IRQ_SPURIOUS: cprintf("cpu%d: spurious interrupt at %x:%x\n", - cpuid(), tf->cs, tf->eip); + cpuid(), tf->cs, tf->rip); lapiceoi(); break; @@ -83,14 +88,14 @@ trap(struct trapframe *tf) if(myproc() == 0 || (tf->cs&3) == 0){ // In kernel, it must be our mistake. cprintf("unexpected trap %d from cpu %d eip %x (cr2=0x%x)\n", - tf->trapno, cpuid(), tf->eip, rcr2()); + tf->trapno, cpuid(), tf->rip, rcr2()); panic("trap"); } // In user space, assume process misbehaved. cprintf("pid %d %s: trap %d err %d on cpu %d " "eip 0x%x addr 0x%x--kill proc\n", myproc()->pid, myproc()->name, tf->trapno, - tf->err, cpuid(), tf->eip, rcr2()); + tf->err, cpuid(), tf->rip, rcr2()); myproc()->killed = 1; } @@ -105,8 +110,10 @@ trap(struct trapframe *tf) if(myproc() && myproc()->state == RUNNING && tf->trapno == T_IRQ0+IRQ_TIMER) yield(); - + // Check if the process has been killed since we yielded if(myproc() && myproc()->killed && (tf->cs&3) == DPL_USER) exit(); } + + |