| 0,0 → 1,119 |
|---|
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <arch/interrupt.h> |
| #include <print.h> |
| #include <panic.h> |
| #include <arch/i8259.h> |
| #include <func.h> |
| #include <cpu.h> |
| #include <arch/asm.h> |
| |
| /* |
| * Interrupt and exception dispatching. |
| */ |
| |
| static iroutine ivt[IVT_ITEMS]; |
| |
| void (* disable_irqs_function)(__u16 irqmask) = NULL; |
| void (* enable_irqs_function)(__u16 irqmask) = NULL; |
| void (* eoi_function)(void) = NULL; |
| |
| iroutine trap_register(__u8 n, iroutine f) |
| { |
| iroutine old; |
| |
| old = ivt[n]; |
| ivt[n] = f; |
| |
| return old; |
| } |
| |
| /* |
| * Called directly from the assembler code. |
| * CPU is cpu_priority_high(). |
| */ |
| void trap_dispatcher(__u8 n, __u32 stack[]) |
| { |
| ivt[n](n,stack); |
| } |
| |
| void null_interrupt(__u8 n, __u32 stack[]) |
| { |
| printf("int %d: null_interrupt\n", n); |
| printf("stack: %L, %L, %L, %L\n", stack[0], stack[1], stack[2], stack[3]); |
| panic("unserviced interrupt\n"); |
| } |
| |
| void gp_fault(__u8 n, __u32 stack[]) |
| { |
| printf("stack[0]=%X, %%eip=%X, %%cs=%X, flags=%X\n", stack[0], stack[1], stack[2], stack[3]); |
| printf("%%eax=%L, %%ebx=%L, %%ecx=%L, %%edx=%L,\n%%edi=%L, %%esi=%L, %%ebp=%L, %%esp=%L\n", stack[-2], stack[-5], stack[-3], stack[-4], stack[-9], stack[-8], stack[-1], stack); |
| printf("stack: %X, %X, %X, %X\n", stack[4], stack[5], stack[6], stack[7]); |
| panic("general protection fault\n"); |
| } |
| |
| void page_fault(__u8 n, __u32 stack[]) |
| { |
| printf("page fault address: %X\n", cpu_read_cr2()); |
| printf("stack[0]=%X, %%eip=%X, %%cs=%X, flags=%X\n", stack[0], stack[1], stack[2], stack[3]); |
| printf("%%eax=%L, %%ebx=%L, %%ecx=%L, %%edx=%L,\n%%edi=%L, %%esi=%L, %%ebp=%L, %%esp=%L\n", stack[-2], stack[-5], stack[-3], stack[-4], stack[-9], stack[-8], stack[-1], stack); |
| printf("stack: %X, %X, %X, %X\n", stack[4], stack[5], stack[6], stack[7]); |
| panic("page fault\n"); |
| } |
| |
| void syscall(__u8 n, __u32 stack[]) |
| { |
| printf("syscall... "); |
| thread_sleep(1); |
| } |
| |
| void trap_virtual_enable_irqs(__u16 irqmask) |
| { |
| if (enable_irqs_function) |
| enable_irqs_function(irqmask); |
| else |
| panic(PANIC "no enable_irqs_function\n"); |
| } |
| |
| void trap_virtual_disable_irqs(__u16 irqmask) |
| { |
| if (disable_irqs_function) |
| disable_irqs_function(irqmask); |
| else |
| panic(PANIC "no disable_irqs_function\n"); |
| } |
| |
| void trap_virtual_eoi(void) |
| { |
| if (eoi_function) |
| eoi_function(); |
| else |
| panic(PANIC "no eoi_function\n"); |
| |
| } |