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226 palkovsky 1
/*
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 * Copyright (C) 2001-2004 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include <arch/interrupt.h>
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#include <print.h>
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#include <debug.h>
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#include <panic.h>
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#include <arch/i8259.h>
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#include <func.h>
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#include <cpu.h>
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#include <arch/asm.h>
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#include <mm/tlb.h>
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#include <arch.h>
268 palkovsky 39
#include <symtab.h>
282 palkovsky 40
#include <arch/asm.h>
309 palkovsky 41
#include <proc/scheduler.h>
391 jermar 42
#include <proc/thread.h>
226 palkovsky 43
 
268 palkovsky 44
 
297 palkovsky 45
static void messy_stack_trace(__native *stack)
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{
299 palkovsky 47
    __native *upper_limit = (__native *)(((__native)get_stack_base()) + STACK_SIZE);
297 palkovsky 48
    char *symbol;
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    printf("Stack contents: ");
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    while (stack < upper_limit) {
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        symbol = get_symtab_entry((__address)*stack);
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        if (symbol)
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            printf("%s, ", symbol);
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        stack++;
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    }
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    printf("\n");
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}
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286 palkovsky 60
static void print_info_errcode(__u8 n, __native x[])
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{
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    char *symbol;
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    if (!(symbol=get_symtab_entry(x[1])))
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        symbol = "";
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    printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n,__FUNCTION__);
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    printf("%%rip: %Q (%s)\n",x[1],symbol);
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    printf("ERROR_WORD=%Q\n", x[0]);
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    printf("%%rcs=%Q,flags=%Q, %%cr0=%Q\n", x[2], x[3],read_cr0());
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    printf("%%rax=%Q, %%rbx=%Q, %%rcx=%Q\n",x[-2],x[-3],x[-4]);
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    printf("%%rdx=%Q, %%rsi=%Q, %%rdi=%Q\n",x[-5],x[-6],x[-7]);
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    printf("%%r8 =%Q, %%r9 =%Q, %%r10=%Q\n",x[-8],x[-9],x[-10]);
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    printf("%%r11=%Q, %%r12=%Q, %%r13=%Q\n",x[-11],x[-12],x[-13]);
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    printf("%%r14=%Q, %%r15=%Q, %%rsp=%Q\n",x[-14],x[-15],x);
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    printf("%%rbp=%Q\n",x[-1]);
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    printf("stack: %Q, %Q, %Q\n", x[5], x[6], x[7]);
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    printf("       %Q, %Q, %Q\n", x[8], x[9], x[10]);
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    printf("       %Q, %Q, %Q\n", x[11], x[12], x[13]);
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    printf("       %Q, %Q, %Q\n", x[14], x[15], x[16]);
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    printf("       %Q, %Q, %Q\n", x[17], x[18], x[19]);
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    printf("       %Q, %Q, %Q\n", x[20], x[21], x[22]);
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    printf("       %Q, %Q, %Q\n", x[23], x[24], x[25]);
297 palkovsky 84
    messy_stack_trace(&x[5]);
286 palkovsky 85
}
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226 palkovsky 87
/*
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 * Interrupt and exception dispatching.
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 */
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static iroutine ivt[IVT_ITEMS];
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void (* disable_irqs_function)(__u16 irqmask) = NULL;
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void (* enable_irqs_function)(__u16 irqmask) = NULL;
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void (* eoi_function)(void) = NULL;
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iroutine trap_register(__u8 n, iroutine f)
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{
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    ASSERT(n < IVT_ITEMS);
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    iroutine old;
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    old = ivt[n];
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    ivt[n] = f;
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    return old;
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}
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/*
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 * Called directly from the assembler code.
413 jermar 111
 * CPU is interrupts_disable()'d.
226 palkovsky 112
 */
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void trap_dispatcher(__u8 n, __native stack[])
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{
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    ASSERT(n < IVT_ITEMS);
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    ivt[n](n, stack);
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}
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void null_interrupt(__u8 n, __native stack[])
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{
282 palkovsky 122
    printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n,__FUNCTION__); \
226 palkovsky 123
    printf("stack: %L, %L, %L, %L\n", stack[0], stack[1], stack[2], stack[3]);
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    panic("unserviced interrupt\n");
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}
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void gp_fault(__u8 n, __native stack[])
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{
286 palkovsky 129
    print_info_errcode(n,stack);
226 palkovsky 130
    panic("general protection fault\n");
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}
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void ss_fault(__u8 n, __native stack[])
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{
286 palkovsky 135
    print_info_errcode(n,stack);
226 palkovsky 136
    panic("stack fault\n");
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}
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void nm_fault(__u8 n, __native stack[])
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{
458 decky 142
#ifdef CONFIG_FPU_LAZY     
309 palkovsky 143
    scheduler_fpu_lazy_request();
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#else
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    panic("fpu fault");
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#endif
226 palkovsky 147
}
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void page_fault(__u8 n, __native stack[])
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{
286 palkovsky 153
    print_info_errcode(n,stack);
268 palkovsky 154
    printf("Page fault address: %Q\n", read_cr2());
226 palkovsky 155
    panic("page fault\n");
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}
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void syscall(__u8 n, __native stack[])
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{
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    printf("cpu%d: syscall\n", CPU->id);
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    thread_usleep(1000);
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}
163
 
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void tlb_shootdown_ipi(__u8 n, __native stack[])
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{
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    trap_virtual_eoi();
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    tlb_shootdown_ipi_recv();
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}
169
 
170
void wakeup_ipi(__u8 n, __native stack[])
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{
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    trap_virtual_eoi();
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}
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void trap_virtual_enable_irqs(__u16 irqmask)
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{
177
    if (enable_irqs_function)
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        enable_irqs_function(irqmask);
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    else
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        panic("no enable_irqs_function\n");
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}
182
 
183
void trap_virtual_disable_irqs(__u16 irqmask)
184
{
185
    if (disable_irqs_function)
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        disable_irqs_function(irqmask);
187
    else
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        panic("no disable_irqs_function\n");
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}
190
 
191
void trap_virtual_eoi(void)
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{
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    if (eoi_function)
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        eoi_function();
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    else
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        panic("no eoi_function\n");
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}