status_t
load_kernel(stage2_args* args, BootVolume& volume)
{
const char *name;
int fd = find_kernel(volume, &name);
if (fd < B_OK)
return fd;
dprintf("load kernel %s...\n", name);
elf_init();
preloaded_image *image;
status_t status = elf_load_image(fd, &image);
close(fd);
if (status < B_OK) {
dprintf("loading kernel failed: %lx!\n", status);
return status;
}
gKernelArgs.kernel_image = image;
status = elf_relocate_image(gKernelArgs.kernel_image);
if (status < B_OK) {
dprintf("relocating kernel failed: %lx!\n", status);
return status;
}
gKernelArgs.kernel_image->name = kernel_args_strdup(name);
return B_OK;
}
void findKernelCodePageByCr3(unsigned startVirtualAddr, Mem * mem, int pageSize, unsigned cr3Pages[]) {
unsigned startVirtual = startVirtualAddr;
int cr3PageIndex = 0;
for (; startVirtual > startVirtualAddr - 1; startVirtual += 0x1000) {
// for (; startVirtual < 0x818f0000; startVirtual += 0x1000) {
unsigned vAddr = startVirtual;
int rw = 0; //read or write
int us = 0; //use or system
int g = 0; //global(no move out of TLB) or not global
int ps = 0; //page size
unsigned pAddr = vtopPageProperty(mem->mem, mem->mem_size, mem->pgd, vAddr, &rw, &us, &g,
&ps);
// IS PHYSICAL ADDRESS VALID?
if (pAddr == -1 || pAddr > mem->mem_size)
continue;
//collect pages which are system access, and global pages
if (us == 0 && g == 256) {
// printf("r only page %x\n", vAddr);
if (find_kernel(mem, vAddr, pageSize) == 0) {
//record kernel address
cr3Pages[cr3PageIndex++] = vAddr;
printf("kernel start at %x\n", vAddr);
}
}
}
}
bool
is_bootable(Directory *volume)
{
if (volume->IsEmpty())
return false;
// check for the existance of a kernel (for our platform)
int fd = find_kernel(volume);
if (fd < B_OK)
return false;
close(fd);
return true;
}
static struct kvm *kvm_cmd_run_init(int argc, const char **argv)
{
static char real_cmdline[2048], default_name[20];
unsigned int nr_online_cpus;
struct sigaction sa;
struct kvm *kvm = kvm__new();
if (IS_ERR(kvm))
return kvm;
sa.sa_flags = SA_SIGINFO;
sa.sa_sigaction = handle_sigalrm;
sigemptyset(&sa.sa_mask);
sigaction(SIGALRM, &sa, NULL);
nr_online_cpus = sysconf(_SC_NPROCESSORS_ONLN);
kvm->cfg.custom_rootfs_name = "default";
while (argc != 0) {
BUILD_OPTIONS(options, &kvm->cfg, kvm);
argc = parse_options(argc, argv, options, run_usage,
PARSE_OPT_STOP_AT_NON_OPTION |
PARSE_OPT_KEEP_DASHDASH);
if (argc != 0) {
/* Cusrom options, should have been handled elsewhere */
if (strcmp(argv[0], "--") == 0) {
if (kvm_run_wrapper == KVM_RUN_SANDBOX) {
kvm->cfg.sandbox = DEFAULT_SANDBOX_FILENAME;
kvm_run_write_sandbox_cmd(kvm, argv+1, argc-1);
break;
}
}
if ((kvm_run_wrapper == KVM_RUN_DEFAULT && kvm->cfg.kernel_filename) ||
(kvm_run_wrapper == KVM_RUN_SANDBOX && kvm->cfg.sandbox)) {
fprintf(stderr, "Cannot handle parameter: "
"%s\n", argv[0]);
usage_with_options(run_usage, options);
free(kvm);
return ERR_PTR(-EINVAL);
}
if (kvm_run_wrapper == KVM_RUN_SANDBOX) {
/*
* first unhandled parameter is treated as
* sandbox command
*/
kvm->cfg.sandbox = DEFAULT_SANDBOX_FILENAME;
kvm_run_write_sandbox_cmd(kvm, argv, argc);
} else {
/*
* first unhandled parameter is treated as a kernel
* image
*/
kvm->cfg.kernel_filename = argv[0];
}
argv++;
argc--;
}
}
kvm->nr_disks = kvm->cfg.image_count;
if (!kvm->cfg.kernel_filename)
kvm->cfg.kernel_filename = find_kernel();
if (!kvm->cfg.kernel_filename) {
kernel_usage_with_options();
return ERR_PTR(-EINVAL);
}
kvm->cfg.vmlinux_filename = find_vmlinux();
kvm->vmlinux = kvm->cfg.vmlinux_filename;
if (kvm->cfg.nrcpus == 0)
kvm->cfg.nrcpus = nr_online_cpus;
if (!kvm->cfg.ram_size)
kvm->cfg.ram_size = get_ram_size(kvm->cfg.nrcpus);
if (kvm->cfg.ram_size < MIN_RAM_SIZE_MB)
die("Not enough memory specified: %lluMB (min %lluMB)",
(unsigned long long)kvm->cfg.ram_size, MIN_RAM_SIZE_MB);
if (kvm->cfg.ram_size > host_ram_size())
pr_warning("Guest memory size %lluMB exceeds host physical RAM size %lluMB",
(unsigned long long)kvm->cfg.ram_size, (unsigned long long)host_ram_size());
kvm->cfg.ram_size <<= MB_SHIFT;
if (!kvm->cfg.dev)
kvm->cfg.dev = DEFAULT_KVM_DEV;
if (!kvm->cfg.console)
kvm->cfg.console = DEFAULT_CONSOLE;
if (!strncmp(kvm->cfg.console, "virtio", 6))
kvm->cfg.active_console = CONSOLE_VIRTIO;
else if (!strncmp(kvm->cfg.console, "serial", 6))
kvm->cfg.active_console = CONSOLE_8250;
else if (!strncmp(kvm->cfg.console, "hv", 2))
kvm->cfg.active_console = CONSOLE_HV;
else
pr_warning("No console!");
if (!kvm->cfg.host_ip)
kvm->cfg.host_ip = DEFAULT_HOST_ADDR;
if (!kvm->cfg.guest_ip)
kvm->cfg.guest_ip = DEFAULT_GUEST_ADDR;
if (!kvm->cfg.guest_mac)
kvm->cfg.guest_mac = DEFAULT_GUEST_MAC;
if (!kvm->cfg.host_mac)
kvm->cfg.host_mac = DEFAULT_HOST_MAC;
if (!kvm->cfg.script)
kvm->cfg.script = DEFAULT_SCRIPT;
if (!kvm->cfg.network)
kvm->cfg.network = DEFAULT_NETWORK;
memset(real_cmdline, 0, sizeof(real_cmdline));
kvm__arch_set_cmdline(real_cmdline, kvm->cfg.vnc || kvm->cfg.sdl);
if (strlen(real_cmdline) > 0)
strcat(real_cmdline, " ");
if (kvm->cfg.kernel_cmdline)
strlcat(real_cmdline, kvm->cfg.kernel_cmdline, sizeof(real_cmdline));
if (!kvm->cfg.guest_name) {
if (kvm->cfg.custom_rootfs) {
kvm->cfg.guest_name = kvm->cfg.custom_rootfs_name;
} else {
sprintf(default_name, "guest-%u", getpid());
kvm->cfg.guest_name = default_name;
}
}
if (!kvm->cfg.using_rootfs && !kvm->cfg.disk_image[0].filename && !kvm->cfg.initrd_filename) {
char tmp[PATH_MAX];
kvm_setup_create_new(kvm->cfg.custom_rootfs_name);
kvm_setup_resolv(kvm->cfg.custom_rootfs_name);
snprintf(tmp, PATH_MAX, "%s%s", kvm__get_dir(), "default");
if (virtio_9p__register(kvm, tmp, "/dev/root") < 0)
die("Unable to initialize virtio 9p");
if (virtio_9p__register(kvm, "/", "hostfs") < 0)
die("Unable to initialize virtio 9p");
kvm->cfg.using_rootfs = kvm->cfg.custom_rootfs = 1;
}
#ifndef CONFIG_MIPS
if (kvm->cfg.using_rootfs) {
strcat(real_cmdline, " root=/dev/root rw rootflags=rw,trans=virtio,version=9p2000.L rootfstype=9p");
if (kvm->cfg.custom_rootfs) {
kvm_run_set_sandbox(kvm);
strcat(real_cmdline, " init=/virt/init");
if (!kvm->cfg.no_dhcp)
strcat(real_cmdline, " ip=dhcp");
if (kvm_setup_guest_init(kvm))
die("Failed to setup init for guest.");
}
} else
#endif
if (!strstr(real_cmdline, "root=")) {
strlcat(real_cmdline, " root=/dev/vda rw ", sizeof(real_cmdline));
}
kvm->cfg.real_cmdline = real_cmdline;
printf(" # %s run -k %s -m %u -c %d --name %s\n", KVM_BINARY_NAME,
kvm->cfg.kernel_filename, (unsigned)(kvm->cfg.ram_size / 1024 / 1024), kvm->cfg.nrcpus, kvm->cfg.guest_name);
if (init_list__init(kvm) < 0)
die ("Initialisation failed");
return kvm;
}
/* determine version of OS by mem
* 1.To get signature of multiply versions of os, which is the md5 of kernel code
* 2.Compared by a decision tree.
* 3.Done!*/
void determineOsVersion(Mem * mem)
{
int i;
int pageSize = 4 * 1024; //4k
int totalPageNumber = mem->mem_size / (4 * 1024); //assume that every page has 4k
unsigned codePageNo = 0;
//record when two page have different page index and the same sharp
int calledPages[totalPageNumber];
int dsmPages[totalPageNumber];
//record virtual address
unsigned virtualAddrs[totalPageNumber];
for (i = 0; i < totalPageNumber; i++) {
calledPages[i] = 0;
dsmPages[i] = 0;
virtualAddrs[i] = 0;
}
//start address
unsigned startVirtualAddr = KERNEL_START_ADDRESS;
//with dissemble or not
int withDissemble = 1;
int cr3PageIndex = 0;
unsigned cr3Pages[20];
for (i = 0; i < 20; i++) {
cr3Pages[i] = 0;
}
struct timeval earlier;
struct timeval later;
if (gettimeofday(&earlier, NULL)) {
perror("gettimeofday() error");
exit(1);
}
//generate step 1 clusters
clusters[0].end = 0;
int pre_rw = -1; //read or write
int pre_us = -1; //use or system
int pre_g = -1; //global, no move out of TLB
int pre_ps = -1; //page size
unsigned cluster_index = 0;
newstart = 1;
unsigned vAddr = startVirtualAddr;
for (; vAddr > KERNEL_START_ADDRESS - 1; vAddr += 0x1000) {
//printf("startvirtual %x:\n",startVirtualAddr);
int rw = 0; //read or write
int us = 0; //use or system
int g = 0; //global, no move out of TLB
int ps = 0; //page size 4M or 4k
unsigned pAddr =
vtopPageProperty(mem->mem, mem->mem_size, mem->pgd, vAddr, &rw,
&us, &g, &ps);
//if PHYSICAL ADDRESS is not VALID, then start a new cluster
if (pAddr < 0 || pAddr > mem->mem_size || us != 0 || g != 256) {
if (newstart == 0) {
clusters[cluster_index].end = vAddr - 1;
//printf("err address end is %x %x\n", vAddr, ranges[range_index].end);
newstart = 1;
}
continue;
}
//if any property changes, then start a new cluster
if (rw != pre_rw || us != pre_us || g != pre_g || ps != pre_ps) {
if (newstart == 0) {
clusters[cluster_index].end = vAddr - 1;
//printf("property change end is %x %x\n", vAddr, ranges[range_index].end);
newstart = 1;
}
}
//update pre properties
pre_rw = rw;
pre_us = us;
pre_g = g;
pre_ps = ps;
//collect pages with continuous properties;
if (newstart) {
clusters[++cluster_index].start = vAddr;
clusters[cluster_index].end = vAddr + pageSize - 1;
newstart = 0;
} else
clusters[cluster_index].end = vAddr + pageSize - 1;
}
if (gettimeofday(&later, NULL)) {
perror("gettimeofday() error");
exit(1);
}
printf("step1, cluster: %d,time cost is %d milliseconds\n",
cluster_index, timeval_diff(NULL, &later, &earlier) / 1000);
//step2. kernel code page clusters with cr3
if (gettimeofday(&earlier, NULL)) {
perror("gettimeofday() error");
exit(1);
}
unsigned startVirtual = startVirtualAddr;
for (; startVirtual > startVirtualAddr - 1; startVirtual += 0x1000) {
// for (; startVirtual < 0x818f0000; startVirtual += 0x1000) {
unsigned vAddr = startVirtual;
int rw = 0; //read or write
int us = 0; //use or system
int g = 0; //global(no move out of TLB) or not global
int ps = 0; //page size
unsigned pAddr =
vtopPageProperty(mem->mem, mem->mem_size, mem->pgd, vAddr, &rw,
&us, &g, &ps);
// IS PHYSICAL ADDRESS VALID?
if (pAddr == -1 || pAddr > mem->mem_size)
continue;
//collect pages which are system access, and global pages
if (us == 0 && g == 256) {
// printf("r only page %x\n", vAddr);
if (find_kernel(mem, vAddr, pageSize) == 0) {
//record kernel address
cr3Pages[cr3PageIndex++] = vAddr;
printf("kernel start at %x\n", vAddr);
}
}
}
if (gettimeofday(&later, NULL)) {
perror("gettimeofday() error");
exit(1);
}
printf("step2 time cost is %d milliseconds\n",
timeval_diff(NULL, &later, &earlier) / 1000);
//step 3. clusters
if (gettimeofday(&earlier, NULL)) {
perror("gettimeofday() error");
exit(1);
}
int cr3PagesNo = 0;
ranges[0].end = 0;
newstart = 1;
for (i = 1; i <= cluster_index; i++) {
//:w printf("%x %x\n", clusters[i].start, clusters[i].end);
if (containKernelAddres(clusters[i], cr3Pages) == -1) {
continue;
}
cr3PagesNo++;
unsigned vAddr = clusters[i].start;
// printf("%x %x\n", clusters[i].start, clusters[i].end);
newstart = 1;
for (; vAddr < clusters[i].end; vAddr += 0x1000) {
unsigned pAddr =
vtop(mem->mem, mem->mem_size, mem->pgd, vAddr);
if (vAddr == out_pc)
code_init(mem, vAddr, pageSize, dsmPages, virtualAddrs, 1,
calledPages, &codePageNo);
else
code_init(mem, vAddr, pageSize, dsmPages, virtualAddrs, 0,
calledPages, &codePageNo);
}
ranges[range_index].end = clusters[i].end;
}
if (gettimeofday(&later, NULL)) {
perror("gettimeofday() error");
exit(1);
}
printf("step2, cluster: %d\n", cr3PagesNo);
printf("step3, cluster: %d,time cost is %d milliseconds\n",
range_index, timeval_diff(NULL, &later, &earlier) / 1000);
//3.find the kernel core code page cluster, and print it
int osNumber = initDb();
if (gettimeofday(&earlier, NULL)) {
perror("gettimeofday() error");
exit(1);
}
int max_len = 0, max_index = 0;
for (i = 1; i <= range_index; i++) {
// printf("start:%x, end:%x: len:%x kernel\n", ranges[i].start, ranges[i].end, ranges[i].len);
if (ranges[i].len > max_len) {
max_index = i;
max_len = ranges[i].len;
}
}
//4.print md5 of pages that can be disassembled
int availableOs[FINGERPRINT_NO], matchCounts[FINGERPRINT_NO];
for (i = 0; i < FINGERPRINT_NO; i++) {
availableOs[i] = 1;
matchCounts[i] = 0;
}
startVirtualAddr = ranges[max_index].start;
unsigned disasPageNo = 0;
unsigned totalPageNo = 0;
for (; startVirtualAddr <= ranges[max_index].end;
startVirtualAddr += 0x1000) {
totalPageNo++;
unsigned pAddr =
vtop(mem->mem, mem->mem_size, mem->pgd, startVirtualAddr);
if (pAddr == -1 || pAddr > mem->mem_size)
continue;
int pageIndex = pAddr / pageSize;
if (dsmPages[pageIndex] == 1) {
int offset =
(startVirtualAddr - ranges[max_index].start) / 4096;
void *startAdress =
(void *) ((unsigned) mem->mem + pageIndex * pageSize);
unsigned char md5digest[16];
MDMem(startAdress, pageSize, md5digest);
// printf("%x ", vaddr); //print vaddr
MDPrint(md5digest);
printf("\n");
//search hash table
int ret =
matchByIndex(osNumber, md5digest, offset, availableOs,
matchCounts);
// genMd5WithOffset(startAdress, pageSize, startVirtualAddr, offset);
disasPageNo++;
}
}
if (gettimeofday(&later, NULL)) {
perror("gettimeofday() error");
exit(1);
}
printf("step4.time cost is %d milliseconds\n",
timeval_diff(NULL, &later, &earlier) / 1000);
int maxIndex = -1;
int maxMatch = 0;
for (i = 0; i < FINGERPRINT_NO; i++) {
if (matchCounts[i] > maxMatch) {
maxIndex = i;
maxMatch = matchCounts[i];
}
}
if (maxMatch > 0)
printf("Os is %s, match count is %d\n",
fingerprints[maxIndex].osVersion, maxMatch);
else
puts("Unknown OS!");
return;
}
int kvm_cmd_run(int argc, const char **argv, const char *prefix)
{
struct virtio_net_parameters net_params;
static char real_cmdline[2048];
struct framebuffer *fb = NULL;
unsigned int nr_online_cpus;
int exit_code = 0;
int max_cpus;
char *hi;
int i;
void *ret;
signal(SIGALRM, handle_sigalrm);
signal(SIGQUIT, handle_sigquit);
signal(SIGUSR1, handle_sigusr1);
signal(SIGUSR2, handle_sigusr2);
nr_online_cpus = sysconf(_SC_NPROCESSORS_ONLN);
while (argc != 0) {
argc = parse_options(argc, argv, options, run_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
if (argc != 0) {
if (kernel_filename) {
fprintf(stderr, "Cannot handle parameter: "
"%s\n", argv[0]);
usage_with_options(run_usage, options);
return EINVAL;
}
/* first unhandled parameter is treated as a kernel
image
*/
kernel_filename = argv[0];
argv++;
argc--;
}
}
if (!kernel_filename)
kernel_filename = find_kernel();
if (!kernel_filename) {
kernel_usage_with_options();
return EINVAL;
}
vmlinux_filename = find_vmlinux();
if (nrcpus == 0)
nrcpus = nr_online_cpus;
else if (nrcpus < 1 || nrcpus > KVM_NR_CPUS)
die("Number of CPUs %d is out of [1;%d] range", nrcpus, KVM_NR_CPUS);
if (!ram_size)
ram_size = get_ram_size(nrcpus);
if (ram_size < MIN_RAM_SIZE_MB)
die("Not enough memory specified: %lluMB (min %lluMB)", ram_size, MIN_RAM_SIZE_MB);
if (ram_size > host_ram_size())
pr_warning("Guest memory size %lluMB exceeds host physical RAM size %lluMB", ram_size, host_ram_size());
ram_size <<= MB_SHIFT;
if (!kvm_dev)
kvm_dev = DEFAULT_KVM_DEV;
if (!console)
console = DEFAULT_CONSOLE;
if (!strncmp(console, "virtio", 6))
active_console = CONSOLE_VIRTIO;
else
active_console = CONSOLE_8250;
if (!host_ip_addr)
host_ip_addr = DEFAULT_HOST_ADDR;
if (!guest_mac)
guest_mac = DEFAULT_GUEST_MAC;
if (!script)
script = DEFAULT_SCRIPT;
if (virtio_9p_dir) {
char tmp[PATH_MAX];
if (realpath(virtio_9p_dir, tmp))
virtio_9p__init(kvm, tmp);
else
die("Failed resolving 9p path");
}
symbol__init(vmlinux_filename);
term_init();
kvm = kvm__init(kvm_dev, ram_size);
ioeventfd__init();
max_cpus = kvm__max_cpus(kvm);
if (nrcpus > max_cpus) {
printf(" # Limit the number of CPUs to %d\n", max_cpus);
kvm->nrcpus = max_cpus;
}
kvm->nrcpus = nrcpus;
/*
* vidmode should be either specified
* either set by default
*/
if (vnc || sdl) {
if (vidmode == -1)
vidmode = 0x312;
} else
vidmode = 0;
memset(real_cmdline, 0, sizeof(real_cmdline));
strcpy(real_cmdline, "notsc noapic noacpi pci=conf1");
if (vnc || sdl) {
strcat(real_cmdline, " video=vesafb console=tty0");
} else
strcat(real_cmdline, " console=ttyS0 earlyprintk=serial");
strcat(real_cmdline, " ");
if (kernel_cmdline)
strlcat(real_cmdline, kernel_cmdline, sizeof(real_cmdline));
hi = NULL;
if (!image_filename[0]) {
hi = host_image(real_cmdline, sizeof(real_cmdline));
if (hi) {
image_filename[0] = hi;
readonly_image[0] = true;
image_count++;
}
}
if (!strstr(real_cmdline, "root="))
strlcat(real_cmdline, " root=/dev/vda rw ", sizeof(real_cmdline));
if (image_count) {
kvm->nr_disks = image_count;
kvm->disks = disk_image__open_all(image_filename, readonly_image, image_count);
if (!kvm->disks)
die("Unable to load all disk images.");
virtio_blk__init_all(kvm);
}
free(hi);
printf(" # kvm run -k %s -m %Lu -c %d\n", kernel_filename, ram_size / 1024 / 1024, nrcpus);
if (!kvm__load_kernel(kvm, kernel_filename, initrd_filename,
real_cmdline, vidmode))
die("unable to load kernel %s", kernel_filename);
kvm->vmlinux = vmlinux_filename;
ioport__setup_legacy();
rtc__init();
serial8250__init(kvm);
pci__init();
if (active_console == CONSOLE_VIRTIO)
virtio_console__init(kvm);
if (virtio_rng)
while (virtio_rng--)
virtio_rng__init(kvm);
if (!network)
network = DEFAULT_NETWORK;
if (!strncmp(network, "virtio", 6)) {
net_params = (struct virtio_net_parameters) {
.host_ip = host_ip_addr,
.kvm = kvm,
.script = script
};
sscanf(guest_mac, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
net_params.guest_mac,
net_params.guest_mac+1,
net_params.guest_mac+2,
net_params.guest_mac+3,
net_params.guest_mac+4,
net_params.guest_mac+5);
virtio_net__init(&net_params);
}
/**
* Set command.
*/
void command_set(const char* line) {
char cmd[MAX_BUFFER];
char key[MAX_BUFFER];
char func[MAX_BUFFER];
char arg1[MAX_BUFFER];
char arg2[MAX_BUFFER];
int argc = sscanf(line, "%s %s = %s %s %s", cmd, key, func, arg1, arg2);
if (argc < 3) {
puts("invalid arguments");
return;
}
float* matrix = NULL;
switch (argc) {
case 3:
if (strcasecmp(func, "identity") == 0) {
matrix = identity_matrix();
} else {
goto invalid;
}
break;
case 4:
if (strcasecmp(func, "random") == 0) {
int seed = atol(arg1);
matrix = random_matrix(seed);
} else if (strcasecmp(func, "uniform") == 0) {
float value = atof(arg1);
matrix = uniform_matrix(value);
} else if (strcasecmp(func, "cloned") == 0) {
MATRIX_GUARD(arg1);
matrix = cloned(m);
} else if (strcasecmp(func, "sorted") == 0) {
MATRIX_GUARD(arg1);
matrix = sorted(m);
} else if (strcasecmp(func, "rotated") == 0) {
MATRIX_GUARD(arg1);
matrix = rotated(m);
} else if (strcasecmp(func, "reversed") == 0) {
MATRIX_GUARD(arg1);
matrix = reversed(m);
} else if (strcasecmp(func, "transposed") == 0) {
MATRIX_GUARD(arg1);
matrix = transposed(m);
} else {
goto invalid;
}
break;
case 5:
if (strcasecmp(func, "sequence") == 0) {
float start = atof(arg1);
float step = atof(arg2);
matrix = sequence_matrix(start, step);
} else if (strcasecmp(func, "scalar.add") == 0) {
MATRIX_GUARD(arg1);
float value = atof(arg2);
matrix = scalar_add(m, value);
} else if (strcasecmp(func, "scalar.mul") == 0) {
MATRIX_GUARD(arg1);
float value = atof(arg2);
matrix = scalar_mul(m, value);
} else if (strcasecmp(func, "matrix.add") == 0) {
MATRIX_GUARD_PAIR(arg1, arg2);
matrix = matrix_add(m1, m2);
} else if (strcasecmp(func, "matrix.mul") == 0) {
MATRIX_GUARD_PAIR(arg1, arg2);
matrix = matrix_mul(m1, m2);
} else if (strcasecmp(func, "matrix.pow") == 0) {
MATRIX_GUARD(arg1);
float exponent = atof(arg2);
matrix = matrix_pow(m, exponent);
} else if (strcasecmp(func, "matrix.conv") == 0) {
MATRIX_GUARD(arg1);
const float* kernel = find_kernel(arg2);
if (kernel == NULL) {
puts("no such kernel");
}
matrix = matrix_conv(m, kernel);
} else {
goto invalid;
}
break;
}
entry* e = find_entry(key);
if (e == NULL) {
e = add_entry(key);
} else {
free(e->matrix);
}
e->matrix = matrix;
puts("ok");
return;
invalid:
puts("invalid arguments");
}