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/*
* Kernel-based Virtual Machine test driver
*
* This test driver provides a simple way of testing kvm, without a full
* device model.
*
* Copyright (C) 2006 Qumranet
*
* Authors:
*
* Avi Kivity <avi@qumranet.com>
* Yaniv Kamay <yaniv@qumranet.com>
*
* This work is licensed under the GNU LGPL license, version 2.
*/
#include "kvmctl.h"
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
kvm_context_t kvm;
static int test_cpuid(void *opaque, uint64_t *rax, uint64_t *rbx,
uint64_t *rcx, uint64_t *rdx)
{
printf("cpuid 0x%lx\n", (uint32_t)*rax);
return 0;
}
static int test_inb(void *opaque, uint16_t addr, uint8_t *value)
{
printf("inb 0x%x\n", addr);
return 0;
}
static int test_inw(void *opaque, uint16_t addr, uint16_t *value)
{
printf("inw 0x%x\n", addr);
return 0;
}
static int test_inl(void *opaque, uint16_t addr, uint32_t *value)
{
printf("inl 0x%x\n", addr);
return 0;
}
static int test_outb(void *opaque, uint16_t addr, uint8_t value)
{
static int newline = 1;
switch (addr) {
case 0xff: // irq injector
printf("injecting interrupt 0x%x\n", value);
kvm_inject_irq(kvm, 0, value);
break;
case 0xf1: // serial
if (newline)
fputs("GUEST: ", stdout);
putchar(value);
newline = value == '\n';
break;
default:
printf("outb $0x%x, 0x%x\n", value, addr);
}
return 0;
}
static int test_outw(void *opaque, uint16_t addr, uint16_t value)
{
printf("outw $0x%x, 0x%x\n", value, addr);
return 0;
}
static int test_outl(void *opaque, uint16_t addr, uint32_t value)
{
printf("outl $0x%x, 0x%x\n", value, addr);
return 0;
}
static int test_debug(void *opaque, int vcpu)
{
printf("test_debug\n");
return 0;
}
static int test_halt(void *opaque, int vcpu)
{
printf("test_halt\n");
return 0;
}
static int test_io_window(void *opaque)
{
printf("test_io_window\n");
return 0;
}
static struct kvm_callbacks test_callbacks = {
.cpuid = test_cpuid,
.inb = test_inb,
.inw = test_inw,
.inl = test_inl,
.outb = test_outb,
.outw = test_outw,
.outl = test_outl,
.debug = test_debug,
.halt = test_halt,
.io_window = test_io_window,
};
static void load_file(void *mem, const char *fname)
{
int r;
int fd;
fd = open(fname, O_RDONLY);
if (fd == -1) {
perror("open");
exit(1);
}
while ((r = read(fd, mem, 4096)) != -1 && r != 0)
mem += r;
if (r == -1) {
perror("read");
exit(1);
}
}
static void enter_32(kvm_context_t kvm)
{
struct kvm_regs regs = {
.rsp = 0x80000, /* 512KB */
.rip = 0x100000, /* 1MB */
.rflags = 2,
};
struct kvm_sregs sregs = {
.cs = { 0, -1u, 8, 11, 1, 0, 1, 1, 0, 1, 0, 0 },
.ds = { 0, -1u, 16, 3, 1, 0, 1, 1, 0, 1, 0, 0 },
.es = { 0, -1u, 16, 3, 1, 0, 1, 1, 0, 1, 0, 0 },
.fs = { 0, -1u, 16, 3, 1, 0, 1, 1, 0, 1, 0, 0 },
.gs = { 0, -1u, 16, 3, 1, 0, 1, 1, 0, 1, 0, 0 },
.ss = { 0, -1u, 16, 3, 1, 0, 1, 1, 0, 1, 0, 0 },
.tr = { 0, 10000, 24, 11, 1, 0, 0, 0, 0, 0, 0, 0 },
.ldt = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
.gdt = { 0, 0 },
.idt = { 0, 0 },
.cr0 = 0x37,
.cr3 = 0,
.cr4 = 0,
.efer = 0,
.apic_base = 0,
.interrupt_bitmap = { 0 },
};
kvm_set_regs(kvm, 0, ®s);
kvm_set_sregs(kvm, 0, &sregs);
}
int main(int ac, char **av)
{
void *vm_mem;
kvm = kvm_init(&test_callbacks, 0);
if (!kvm) {
fprintf(stderr, "kvm_init failed\n");
return 1;
}
if (kvm_create(kvm, 128 * 1024 * 1024, &vm_mem) < 0) {
kvm_finalize(kvm);
fprintf(stderr, "kvm_create failed\n");
return 1;
}
if (ac > 1)
if (strcmp(av[1], "-32") != 0)
load_file(vm_mem + 0xf0000, av[1]);
else
enter_32(kvm);
if (ac > 2)
load_file(vm_mem + 0x100000, av[2]);
kvm_show_regs(kvm, 0);
kvm_run(kvm, 0);
return 0;
}
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