1 #include <lwk/kernel.h>
3 #include <lwk/kallsyms.h>
8 #include <arch/idt_vectors.h>
10 #include <arch/xcall.h>
11 #include <arch/i387.h>
13 idtvec_handler_t idtvec_table[NUM_IDT_ENTRIES];
14 static DEFINE_SPINLOCK(idtvec_table_lock);
16 extern void asm_idtvec_table(void);
19 do_unhandled_idt_vector(struct pt_regs *regs, unsigned int vector)
21 if ((vector >= IRQ0_VECTOR) && (vector <= IRQ15_VECTOR)) {
23 "Unhandled Interrupt! (vector=%u, isa_irq=%u)\n",
24 vector, vector - IRQ0_VECTOR);
27 "Unhandled Interrupt! (vector=%u)\n", vector);
32 do_divide_error(struct pt_regs *regs, unsigned int vector)
34 printk("Divide Error Exception\n");
40 do_nmi(struct pt_regs *regs, unsigned int vector)
42 printk("NMI Exception\n");
48 do_int3(struct pt_regs *regs, unsigned int vector)
50 printk("INT3 Exception\n");
56 do_overflow(struct pt_regs *regs, unsigned int vector)
58 printk("Overflow Exception\n");
64 do_bounds(struct pt_regs *regs, unsigned int vector)
66 printk("Bounds Exception\n");
72 do_invalid_op(struct pt_regs *regs, unsigned int vector)
74 printk("Invalid Op Exception\n");
80 do_device_not_available(struct pt_regs *regs, unsigned int vector)
82 BUG_ON(current->arch.flags & TF_USED_FPU);
83 current->arch.flags |= TF_USED_FPU;
85 fpu_restore_state(current);
89 do_double_fault(struct pt_regs *regs, unsigned int vector)
91 printk("Double Fault Exception\n");
97 do_coproc_segment_overrun(struct pt_regs *regs, unsigned int vector)
99 printk("Coprocessor Segment Exception\n");
100 show_registers(regs);
105 do_invalid_tss(struct pt_regs *regs, unsigned int vector)
107 printk("Invalid TSS Exception)\n");
108 show_registers(regs);
113 do_segment_not_present(struct pt_regs *regs, unsigned int vector)
115 printk("Segment Not Present Exception\n");
116 show_registers(regs);
121 do_stack_segment(struct pt_regs *regs, unsigned int vector)
123 printk("Stack Segment Exception\n");
124 show_registers(regs);
129 do_general_protection(struct pt_regs *regs, unsigned int vector)
131 printk("General Protection Exception\n");
132 show_registers(regs);
137 do_page_fault(struct pt_regs *regs, unsigned int vector)
139 printk("Page Fault Exception (regs %p)\n", regs );
141 static uint8_t recursive_fault;
142 if( recursive_fault++ )
143 panic( "Recursive page fault! Halt and catch fire!" );
145 show_registers(regs);
150 do_spurious_interrupt_bug(struct pt_regs *regs, unsigned int vector)
152 printk("Spurious Interrupt Exception\n");
153 show_registers(regs);
158 do_coprocessor_error(struct pt_regs *regs, unsigned int vector)
160 printk("Coprocessor Error Exception\n");
161 show_registers(regs);
166 do_alignment_check(struct pt_regs *regs, unsigned int vector)
168 printk("Alignment Check Exception\n");
169 show_registers(regs);
174 do_machine_check(struct pt_regs *regs, unsigned int vector)
176 printk("Machine Check Exception\n");
177 show_registers(regs);
182 do_simd_coprocessor_error(struct pt_regs *regs, unsigned int vector)
184 printk("SIMD Coprocessor Error Exception\n");
185 show_registers(regs);
190 do_apic_timer(struct pt_regs *regs, unsigned int vector)
196 do_apic_perf_counter(struct pt_regs *regs, unsigned int vector)
198 printk("APIC Perf. Counter Interrupt, vector=%u\n", vector);
199 show_registers(regs);
204 do_apic_thermal(struct pt_regs *regs, unsigned int vector)
206 printk("APIC Thermal Interrupt, vector=%u\n", vector);
207 show_registers(regs);
212 do_apic_error(struct pt_regs *regs, unsigned int vector)
214 printk("APIC Error Interrupt, vector=%u\n", vector);
215 show_registers(regs);
220 do_apic_spurious(struct pt_regs *regs, unsigned int vector)
222 printk("APIC Spurious Interrupt, vector=%u\n", vector);
223 show_registers(regs);
228 set_idtvec_handler(unsigned int vector, idtvec_handler_t handler)
230 char namebuf[KSYM_NAME_LEN+1];
231 unsigned long symsize, offset;
232 unsigned long irqstate;
234 ASSERT(vector < NUM_IDT_ENTRIES);
236 if (handler != &do_unhandled_idt_vector) {
237 printk(KERN_DEBUG "IDT Vector %3u -> %s()\n",
238 vector, kallsyms_lookup( (unsigned long)handler,
239 &symsize, &offset, namebuf )
243 spin_lock_irqsave(&idtvec_table_lock, irqstate);
244 idtvec_table[vector] = handler;
245 spin_unlock_irqrestore(&idtvec_table_lock, irqstate);
249 do_interrupt(struct pt_regs *regs, unsigned int vector)
251 idtvec_table[vector](regs, vector);
252 if (vector >= FIRST_EXTERNAL_VECTOR)
253 lapic_ack_interrupt();
257 interrupts_init(void)
262 * Initialize the Interrupt Descriptor Table (IDT).
264 for (vector = 0; vector < NUM_IDT_ENTRIES; vector++) {
265 void *asm_handler = (void *) (
266 (unsigned long)(&asm_idtvec_table) + (vector * 16)
268 set_intr_gate(vector, asm_handler);
269 set_idtvec_handler(vector, &do_unhandled_idt_vector);
273 * Register handlers for the standard x86_64 interrupts & exceptions.
275 set_idtvec_handler( DIVIDE_ERROR_VECTOR, &do_divide_error );
276 set_idtvec_handler( NMI_VECTOR, &do_nmi );
277 set_idtvec_handler( INT3_VECTOR, &do_int3 );
278 set_idtvec_handler( OVERFLOW_VECTOR, &do_overflow );
279 set_idtvec_handler( BOUNDS_VECTOR, &do_bounds );
280 set_idtvec_handler( INVALID_OP_VECTOR, &do_invalid_op );
281 set_idtvec_handler( DEVICE_NOT_AVAILABLE_VECTOR, &do_device_not_available );
282 set_idtvec_handler( DOUBLE_FAULT_VECTOR, &do_double_fault );
283 set_idtvec_handler( COPROC_SEGMENT_OVERRUN_VECTOR, &do_coproc_segment_overrun );
284 set_idtvec_handler( INVALID_TSS_VECTOR, &do_invalid_tss );
285 set_idtvec_handler( SEGMENT_NOT_PRESENT_VECTOR, &do_segment_not_present );
286 set_idtvec_handler( STACK_SEGMENT_VECTOR, &do_stack_segment );
287 set_idtvec_handler( GENERAL_PROTECTION_VECTOR, &do_general_protection );
288 set_idtvec_handler( PAGE_FAULT_VECTOR, &do_page_fault );
289 set_idtvec_handler( SPURIOUS_INTERRUPT_BUG_VECTOR, &do_spurious_interrupt_bug );
290 set_idtvec_handler( COPROCESSOR_ERROR_VECTOR, &do_coprocessor_error );
291 set_idtvec_handler( ALIGNMENT_CHECK_VECTOR, &do_alignment_check );
292 set_idtvec_handler( MACHINE_CHECK_VECTOR, &do_machine_check );
293 set_idtvec_handler( SIMD_COPROCESSOR_ERROR_VECTOR, &do_simd_coprocessor_error );
296 * Register handlers for all of the local APIC vectors.
298 set_idtvec_handler( APIC_TIMER_VECTOR, &do_apic_timer );
299 set_idtvec_handler( APIC_PERF_COUNTER_VECTOR, &do_apic_perf_counter );
300 set_idtvec_handler( APIC_THERMAL_VECTOR, &do_apic_thermal );
301 set_idtvec_handler( APIC_ERROR_VECTOR, &do_apic_error );
302 set_idtvec_handler( APIC_SPURIOUS_VECTOR, &do_apic_spurious );
305 * Register handlers for inter-CPU interrupts (cross calls).
307 set_idtvec_handler( XCALL_FUNCTION_VECTOR, &arch_xcall_function_interrupt );
308 set_idtvec_handler( XCALL_RESCHEDULE_VECTOR, &arch_xcall_reschedule_interrupt );