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#include <os.h>
#include <hypervisor.h>
#include <mm.h>
#include <lib.h>
/*
* These are assembler stubs in entry.S.
* They are the actual entry points for virtual exceptions.
*/
void divide_error(void);
void debug(void);
void int3(void);
void overflow(void);
void bounds(void);
void invalid_op(void);
void device_not_available(void);
void double_fault(void);
void coprocessor_segment_overrun(void);
void invalid_TSS(void);
void segment_not_present(void);
void stack_segment(void);
void general_protection(void);
void page_fault(void);
void coprocessor_error(void);
void simd_coprocessor_error(void);
void alignment_check(void);
void spurious_interrupt_bug(void);
void machine_check(void);
extern void do_exit(void);
void dump_regs(struct pt_regs *regs)
{
int in_kernel = 1;
unsigned long esp;
unsigned short ss;
esp = (unsigned long) (®s->esp);
ss = __KERNEL_DS;
if (regs->xcs & 2) {
in_kernel = 0;
esp = regs->esp;
ss = regs->xss & 0xffff;
}
printf("EIP: %04x:[<%08lx>]\n",
0xffff & regs->xcs, regs->eip);
printf("EFLAGS: %08lx\n",regs->eflags);
printf("eax: %08lx ebx: %08lx ecx: %08lx edx: %08lx\n",
regs->eax, regs->ebx, regs->ecx, regs->edx);
printf("esi: %08lx edi: %08lx ebp: %08lx esp: %08lx\n",
regs->esi, regs->edi, regs->ebp, esp);
printf("ds: %04x es: %04x ss: %04x\n",
regs->xds & 0xffff, regs->xes & 0xffff, ss);
printf("\n");
}
static __inline__ void dump_code(unsigned eip)
{
unsigned *ptr = (unsigned *)eip;
int x;
printk("Bytes at eip:\n");
for (x = -4; x < 5; x++)
printf("%x", ptr[x]);
}
/*
* C handlers here have their parameter-list constructed by the
* assembler stubs above. Each one gets a pointer to a list
* of register values (to be restored at end of exception).
* Some will also receive an error code -- this is the code that
* was generated by the processor for the underlying real exception.
*
* Note that the page-fault exception is special. It also receives
* the faulting linear address. Normally this would be found in
* register CR2, but that is not accessible in a virtualised OS.
*/
static void __inline__ do_trap(int trapnr, char *str,
struct pt_regs * regs, long error_code)
{
printk("FATAL: Unhandled Trap (see mini-os:traps.c)");
printf("%d %s", trapnr, str);
dump_regs(regs);
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