Commit 6b668e88 authored by Linus Torvalds's avatar Linus Torvalds

Merge penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/kconfig

into penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/linux
parents 03132f0c 5974c3a1
......@@ -46,8 +46,9 @@
* by Robert Schwebel, December 2001 <robert@schwebel.de>
*
* BIOS Enhanced Disk Drive support
* by Matt Domsch <Matt_Domsch@dell.com> September 2002
*
* by Matt Domsch <Matt_Domsch@dell.com> October 2002
* conformant to T13 Committee www.t13.org
* projects 1572D, 1484D, 1386D, 1226DT
*/
#include <linux/config.h>
......@@ -549,6 +550,27 @@ done_apm_bios:
#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
# Do the BIOS Enhanced Disk Drive calls
# This consists of two calls:
# int 13h ah=41h "Check Extensions Present"
# int 13h ah=48h "Get Device Parameters"
#
# A buffer of size EDDMAXNR*(EDDEXTSIZE+EDDPARMSIZE) is reserved for our use
# in the empty_zero_page at EDDBUF. The first four bytes of which are
# used to store the device number, interface support map and version
# results from fn41. The following 74 bytes are used to store
# the results from fn48. Starting from device 80h, fn41, then fn48
# are called and their results stored in EDDBUF+n*(EDDEXTSIZE+EDDPARMIZE).
# Then the pointer is incremented to store the data for the next call.
# This repeats until either a device doesn't exist, or until EDDMAXNR
# devices have been stored.
# The one tricky part is that ds:si always points four bytes into
# the structure, and the fn41 results are stored at offsets
# from there. This removes the need to increment the pointer for
# every store, and leaves it ready for the fn48 call.
# A second one-byte buffer, EDDNR, in the empty_zero_page stores
# the number of BIOS devices which exist, up to EDDMAXNR.
# In setup.c, copy_edd() stores both empty_zero_page buffers away
# for later use, as they would get overwritten otherwise.
# This code is sensitive to the size of the structs in edd.h
edd_start:
# %ds points to the bootsector
......@@ -559,12 +581,12 @@ edd_start:
movb $0x80, %dl # BIOS device 0x80
edd_check_ext:
movb $0x41, %ah # Function 41
movw $0x55aa, %bx # magic
movb $CHECKEXTENSIONSPRESENT, %ah # Function 41
movw $EDDMAGIC1, %bx # magic
int $0x13 # make the call
jc edd_done # no more BIOS devices
cmpw $0xAA55, %bx # is magic right?
cmpw $EDDMAGIC2, %bx # is magic right?
jne edd_next # nope, next...
movb %dl, %ds:-4(%si) # store device number
......@@ -574,7 +596,7 @@ edd_check_ext:
edd_get_device_params:
movw $EDDPARMSIZE, %ds:(%si) # put size
movb $0x48, %ah # Function 48
movb $GETDEVICEPARAMETERS, %ah # Function 48
int $0x13 # make the call
# Don't check for fail return
# it doesn't matter.
......
......@@ -26,14 +26,10 @@
/*
* Known issues:
* - module unload leaves a directory around. Seems related to
* creating symlinks in that directory. Seen on kernel 2.5.41.
* - refcounting of struct device objects could be improved.
*
* TODO:
* - Add IDE and USB disk device support
* - when driverfs model of discs and partitions changes,
* update symlink accordingly.
* - Get symlink creator helper functions exported from
* drivers/base instead of duplicating them here.
* - move edd.[ch] to better locations if/when one is decided
......@@ -61,10 +57,12 @@ MODULE_AUTHOR("Matt Domsch <Matt_Domsch@Dell.com>");
MODULE_DESCRIPTION("driverfs interface to BIOS EDD information");
MODULE_LICENSE("GPL");
#define EDD_VERSION "0.06 2002-Oct-09"
#define EDD_VERSION "0.07 2002-Oct-24"
#define EDD_DEVICE_NAME_SIZE 16
#define REPORT_URL "http://domsch.com/linux/edd30/results.html"
#define left (count - (p - buf) - 1)
/*
* bios_dir may go away completely,
* and it definitely won't be at the root
......@@ -78,7 +76,6 @@ static struct driver_dir_entry bios_dir = {
struct edd_device {
char name[EDD_DEVICE_NAME_SIZE];
struct edd_info *info;
struct list_head node;
struct driver_dir_entry dir;
};
......@@ -86,6 +83,7 @@ struct edd_attribute {
struct attribute attr;
ssize_t(*show) (struct edd_device * edev, char *buf, size_t count,
loff_t off);
int (*test) (struct edd_device * edev);
};
/* forward declarations */
......@@ -95,10 +93,11 @@ static struct scsi_device *edd_find_matching_scsi_device(struct edd_device *edev
static struct edd_device *edd_devices[EDDMAXNR];
#define EDD_DEVICE_ATTR(_name,_mode,_show) \
#define EDD_DEVICE_ATTR(_name,_mode,_show,_test) \
struct edd_attribute edd_attr_##_name = { \
.attr = {.name = __stringify(_name), .mode = _mode }, \
.show = _show, \
.test = _test, \
};
static inline struct edd_info *
......@@ -133,35 +132,36 @@ static struct driverfs_ops edd_attr_ops = {
};
static int
edd_dump_raw_data(char *b, void *data, int length)
edd_dump_raw_data(char *b, int count, void *data, int length)
{
char *orig_b = b;
char buffer1[80], buffer2[80], *b1, *b2, c;
char hexbuf[80], ascbuf[20], *h, *a, c;
unsigned char *p = data;
unsigned long column = 0;
int length_printed = 0;
int length_printed = 0, d;
const char maxcolumn = 16;
while (length_printed < length) {
b1 = buffer1;
b2 = buffer2;
while (length_printed < length && count > 0) {
h = hexbuf;
a = ascbuf;
for (column = 0;
column < maxcolumn && length_printed < length; column++) {
b1 += sprintf(b1, "%02x ", (unsigned char) *p);
if (*p < 32 || *p > 126)
h += sprintf(h, "%02x ", (unsigned char) *p);
if (!isprint(*p))
c = '.';
else
c = *p;
b2 += sprintf(b2, "%c", c);
a += sprintf(a, "%c", c);
p++;
length_printed++;
}
/* pad out the line */
for (; column < maxcolumn; column++) {
b1 += sprintf(b1, " ");
b2 += sprintf(b2, " ");
h += sprintf(h, " ");
a += sprintf(a, " ");
}
b += sprintf(b, "%s\t%s\n", buffer1, buffer2);
d = snprintf(b, count, "%s\t%s\n", hexbuf, ascbuf);
b += d;
count -= d;
}
return (b - orig_b);
}
......@@ -179,19 +179,19 @@ edd_show_host_bus(struct edd_device *edev, char *buf, size_t count, loff_t off)
for (i = 0; i < 4; i++) {
if (isprint(info->params.host_bus_type[i])) {
p += sprintf(p, "%c", info->params.host_bus_type[i]);
p += snprintf(p, left, "%c", info->params.host_bus_type[i]);
} else {
p += sprintf(p, " ");
p += snprintf(p, left, " ");
}
}
if (!strncmp(info->params.host_bus_type, "ISA", 3)) {
p += sprintf(p, "\tbase_address: %x\n",
p += snprintf(p, left, "\tbase_address: %x\n",
info->params.interface_path.isa.base_address);
} else if (!strncmp(info->params.host_bus_type, "PCIX", 4) ||
!strncmp(info->params.host_bus_type, "PCI", 3)) {
p += sprintf(p,
"\t%02x:%02x.%01x channel: %u\n",
p += snprintf(p, left,
"\t%02x:%02x.%d channel: %u\n",
info->params.interface_path.pci.bus,
info->params.interface_path.pci.slot,
info->params.interface_path.pci.function,
......@@ -199,12 +199,12 @@ edd_show_host_bus(struct edd_device *edev, char *buf, size_t count, loff_t off)
} else if (!strncmp(info->params.host_bus_type, "IBND", 4) ||
!strncmp(info->params.host_bus_type, "XPRS", 4) ||
!strncmp(info->params.host_bus_type, "HTPT", 4)) {
p += sprintf(p,
p += snprintf(p, left,
"\tTBD: %llx\n",
info->params.interface_path.ibnd.reserved);
} else {
p += sprintf(p, "\tunknown: %llx\n",
p += snprintf(p, left, "\tunknown: %llx\n",
info->params.interface_path.unknown.reserved);
}
return (p - buf);
......@@ -223,43 +223,43 @@ edd_show_interface(struct edd_device *edev, char *buf, size_t count, loff_t off)
for (i = 0; i < 8; i++) {
if (isprint(info->params.interface_type[i])) {
p += sprintf(p, "%c", info->params.interface_type[i]);
p += snprintf(p, left, "%c", info->params.interface_type[i]);
} else {
p += sprintf(p, " ");
p += snprintf(p, left, " ");
}
}
if (!strncmp(info->params.interface_type, "ATAPI", 5)) {
p += sprintf(p, "\tdevice: %u lun: %u\n",
p += snprintf(p, left, "\tdevice: %u lun: %u\n",
info->params.device_path.atapi.device,
info->params.device_path.atapi.lun);
} else if (!strncmp(info->params.interface_type, "ATA", 3)) {
p += sprintf(p, "\tdevice: %u\n",
p += snprintf(p, left, "\tdevice: %u\n",
info->params.device_path.ata.device);
} else if (!strncmp(info->params.interface_type, "SCSI", 4)) {
p += sprintf(p, "\tid: %u lun: %llu\n",
p += snprintf(p, left, "\tid: %u lun: %llu\n",
info->params.device_path.scsi.id,
info->params.device_path.scsi.lun);
} else if (!strncmp(info->params.interface_type, "USB", 3)) {
p += sprintf(p, "\tserial_number: %llx\n",
p += snprintf(p, left, "\tserial_number: %llx\n",
info->params.device_path.usb.serial_number);
} else if (!strncmp(info->params.interface_type, "1394", 4)) {
p += sprintf(p, "\teui: %llx\n",
p += snprintf(p, left, "\teui: %llx\n",
info->params.device_path.i1394.eui);
} else if (!strncmp(info->params.interface_type, "FIBRE", 5)) {
p += sprintf(p, "\twwid: %llx lun: %llx\n",
p += snprintf(p, left, "\twwid: %llx lun: %llx\n",
info->params.device_path.fibre.wwid,
info->params.device_path.fibre.lun);
} else if (!strncmp(info->params.interface_type, "I2O", 3)) {
p += sprintf(p, "\tidentity_tag: %llx\n",
p += snprintf(p, left, "\tidentity_tag: %llx\n",
info->params.device_path.i2o.identity_tag);
} else if (!strncmp(info->params.interface_type, "RAID", 4)) {
p += sprintf(p, "\tidentity_tag: %x\n",
p += snprintf(p, left, "\tidentity_tag: %x\n",
info->params.device_path.raid.array_number);
} else if (!strncmp(info->params.interface_type, "SATA", 4)) {
p += sprintf(p, "\tdevice: %u\n",
p += snprintf(p, left, "\tdevice: %u\n",
info->params.device_path.sata.device);
} else {
p += sprintf(p, "\tunknown: %llx %llx\n",
p += snprintf(p, left, "\tunknown: %llx %llx\n",
info->params.device_path.unknown.reserved1,
info->params.device_path.unknown.reserved2);
}
......@@ -289,15 +289,15 @@ edd_show_raw_data(struct edd_device *edev, char *buf, size_t count, loff_t off)
if (!(info->params.key == 0xBEDD || info->params.key == 0xDDBE))
len = info->params.length;
p += sprintf(p, "int13 fn48 returned data:\n\n");
p += edd_dump_raw_data(p, ((char *) edd) + 4, len);
p += snprintf(p, left, "int13 fn48 returned data:\n\n");
p += edd_dump_raw_data(p, left, ((char *) edd) + 4, len);
/* Spec violation. Adaptec AIC7899 returns 0xDDBE
here, when it should be 0xBEDD.
*/
p += sprintf(p, "\n");
p += snprintf(p, left, "\n");
if (info->params.key == 0xDDBE) {
p += sprintf(p,
p += snprintf(p, left,
"Warning: Spec violation. Key should be 0xBEDD, is 0xDDBE\n");
email++;
}
......@@ -314,13 +314,13 @@ edd_show_raw_data(struct edd_device *edev, char *buf, size_t count, loff_t off)
}
if (checksum) {
p += sprintf(p,
p += snprintf(p, left,
"Warning: Spec violation. Device Path checksum invalid.\n");
email++;
}
if (!nonzero_path) {
p += sprintf(p, "Error: Spec violation. Empty device path.\n");
p += snprintf(p, left, "Error: Spec violation. Empty device path.\n");
email++;
goto out;
}
......@@ -337,7 +337,7 @@ edd_show_raw_data(struct edd_device *edev, char *buf, size_t count, loff_t off)
}
if (warn_padding) {
p += sprintf(p,
p += snprintf(p, left,
"Warning: Spec violation. Padding should be 0x20.\n");
email++;
}
......@@ -350,8 +350,8 @@ edd_show_raw_data(struct edd_device *edev, char *buf, size_t count, loff_t off)
info->params.interface_path.
pci.function));
if (!pci_dev) {
p += sprintf(p, "Error: BIOS says this is a PCI device, but the OS doesn't know\n");
p += sprintf(p, " about a PCI device at %02x:%02x.%01x\n",
p += snprintf(p, left, "Error: BIOS says this is a PCI device, but the OS doesn't know\n");
p += snprintf(p, left, " about a PCI device at %02x:%02x.%d\n",
info->params.interface_path.pci.bus,
info->params.interface_path.pci.slot,
info->params.interface_path.pci.function);
......@@ -362,21 +362,21 @@ edd_show_raw_data(struct edd_device *edev, char *buf, size_t count, loff_t off)
}
}
if (found_pci) {
if (found_pci && !edd_dev_is_type(edev, "SCSI")) {
sd = edd_find_matching_scsi_device(edev);
if (!sd) {
p += sprintf(p, "Error: BIOS says this is a SCSI device, but\n");
p += sprintf(p, " the OS doesn't know about this SCSI device.\n");
p += sprintf(p, " Do you have it's driver module loaded?\n");
p += snprintf(p, left, "Error: BIOS says this is a SCSI device, but\n");
p += snprintf(p, left, " the OS doesn't know about this SCSI device.\n");
p += snprintf(p, left, " Do you have it's driver module loaded?\n");
email++;
}
}
out:
if (email) {
p += sprintf(p, "\nPlease check %s\n", REPORT_URL);
p += sprintf(p, "to see if this has been reported. If not,\n");
p += sprintf(p, "please send the information requested there.\n");
p += snprintf(p, left, "\nPlease check %s\n", REPORT_URL);
p += snprintf(p, left, "to see if this has been reported. If not,\n");
p += snprintf(p, left, "please send the information requested there.\n");
}
return (p - buf);
......@@ -391,7 +391,7 @@ edd_show_version(struct edd_device *edev, char *buf, size_t count, loff_t off)
return 0;
}
p += sprintf(p, "0x%02x\n", info->version);
p += snprintf(p, left, "0x%02x\n", info->version);
return (p - buf);
}
......@@ -406,16 +406,16 @@ edd_show_extensions(struct edd_device *edev, char *buf, size_t count,
}
if (info->interface_support & EDD_EXT_FIXED_DISK_ACCESS) {
p += sprintf(p, "Fixed disk access\n");
p += snprintf(p, left, "Fixed disk access\n");
}
if (info->interface_support & EDD_EXT_DEVICE_LOCKING_AND_EJECTING) {
p += sprintf(p, "Device locking and ejecting\n");
p += snprintf(p, left, "Device locking and ejecting\n");
}
if (info->interface_support & EDD_EXT_ENHANCED_DISK_DRIVE_SUPPORT) {
p += sprintf(p, "Enhanced Disk Drive support\n");
p += snprintf(p, left, "Enhanced Disk Drive support\n");
}
if (info->interface_support & EDD_EXT_64BIT_EXTENSIONS) {
p += sprintf(p, "64-bit extensions\n");
p += snprintf(p, left, "64-bit extensions\n");
}
return (p - buf);
}
......@@ -431,21 +431,21 @@ edd_show_info_flags(struct edd_device *edev, char *buf, size_t count,
}
if (info->params.info_flags & EDD_INFO_DMA_BOUNDRY_ERROR_TRANSPARENT)
p += sprintf(p, "DMA boundry error transparent\n");
p += snprintf(p, left, "DMA boundry error transparent\n");
if (info->params.info_flags & EDD_INFO_GEOMETRY_VALID)
p += sprintf(p, "geometry valid\n");
p += snprintf(p, left, "geometry valid\n");
if (info->params.info_flags & EDD_INFO_REMOVABLE)
p += sprintf(p, "removable\n");
p += snprintf(p, left, "removable\n");
if (info->params.info_flags & EDD_INFO_WRITE_VERIFY)
p += sprintf(p, "write verify\n");
p += snprintf(p, left, "write verify\n");
if (info->params.info_flags & EDD_INFO_MEDIA_CHANGE_NOTIFICATION)
p += sprintf(p, "media change notification\n");
p += snprintf(p, left, "media change notification\n");
if (info->params.info_flags & EDD_INFO_LOCKABLE)
p += sprintf(p, "lockable\n");
p += snprintf(p, left, "lockable\n");
if (info->params.info_flags & EDD_INFO_NO_MEDIA_PRESENT)
p += sprintf(p, "no media present\n");
p += snprintf(p, left, "no media present\n");
if (info->params.info_flags & EDD_INFO_USE_INT13_FN50)
p += sprintf(p, "use int13 fn50\n");
p += snprintf(p, left, "use int13 fn50\n");
return (p - buf);
}
......@@ -459,7 +459,7 @@ edd_show_default_cylinders(struct edd_device *edev, char *buf, size_t count,
return 0;
}
p += sprintf(p, "0x%x\n", info->params.num_default_cylinders);
p += snprintf(p, left, "0x%x\n", info->params.num_default_cylinders);
return (p - buf);
}
......@@ -473,7 +473,7 @@ edd_show_default_heads(struct edd_device *edev, char *buf, size_t count,
return 0;
}
p += sprintf(p, "0x%x\n", info->params.num_default_heads);
p += snprintf(p, left, "0x%x\n", info->params.num_default_heads);
return (p - buf);
}
......@@ -487,7 +487,7 @@ edd_show_default_sectors_per_track(struct edd_device *edev, char *buf,
return 0;
}
p += sprintf(p, "0x%x\n", info->params.sectors_per_track);
p += snprintf(p, left, "0x%x\n", info->params.sectors_per_track);
return (p - buf);
}
......@@ -500,21 +500,10 @@ edd_show_sectors(struct edd_device *edev, char *buf, size_t count, loff_t off)
return 0;
}
p += sprintf(p, "0x%llx\n", info->params.number_of_sectors);
p += snprintf(p, left, "0x%llx\n", info->params.number_of_sectors);
return (p - buf);
}
static EDD_DEVICE_ATTR(raw_data, 0444, edd_show_raw_data);
static EDD_DEVICE_ATTR(version, 0444, edd_show_version);
static EDD_DEVICE_ATTR(extensions, 0444, edd_show_extensions);
static EDD_DEVICE_ATTR(info_flags, 0444, edd_show_info_flags);
static EDD_DEVICE_ATTR(default_cylinders, 0444, edd_show_default_cylinders);
static EDD_DEVICE_ATTR(default_heads, 0444, edd_show_default_heads);
static EDD_DEVICE_ATTR(default_sectors_per_track, 0444,
edd_show_default_sectors_per_track);
static EDD_DEVICE_ATTR(sectors, 0444, edd_show_sectors);
static EDD_DEVICE_ATTR(interface, 0444, edd_show_interface);
static EDD_DEVICE_ATTR(host_bus, 0444, edd_show_host_bus);
/*
* Some device instances may not have all the above attributes,
......@@ -524,16 +513,7 @@ static EDD_DEVICE_ATTR(host_bus, 0444, edd_show_host_bus);
* if the default_{cylinders,heads,sectors_per_track} values
* are zero, the BIOS doesn't provide sane values, don't bother
* creating files for them either.
*
* struct attr_test pairs an attribute and a test,
* (the default NULL test being true - the attribute exists)
* and individual existence tests may be written for each
* attribute.
*/
struct attr_test {
struct edd_attribute *attr;
int (*test) (struct edd_device * edev);
};
static int
edd_has_default_cylinders(struct edd_device *edev)
......@@ -590,23 +570,34 @@ edd_has_edd30(struct edd_device *edev)
return 0;
}
static struct attr_test def_attrs[] = {
{.attr = &edd_attr_raw_data},
{.attr = &edd_attr_version},
{.attr = &edd_attr_extensions},
{.attr = &edd_attr_info_flags},
{.attr = &edd_attr_sectors},
{.attr = &edd_attr_default_cylinders,
.test = &edd_has_default_cylinders},
{.attr = &edd_attr_default_heads,
.test = &edd_has_default_heads},
{.attr = &edd_attr_default_sectors_per_track,
.test = &edd_has_default_sectors_per_track},
{.attr = &edd_attr_interface,
.test = &edd_has_edd30},
{.attr = &edd_attr_host_bus,
.test = &edd_has_edd30},
{.attr = NULL,.test = NULL},
static EDD_DEVICE_ATTR(raw_data, 0444, edd_show_raw_data, NULL);
static EDD_DEVICE_ATTR(version, 0444, edd_show_version, NULL);
static EDD_DEVICE_ATTR(extensions, 0444, edd_show_extensions, NULL);
static EDD_DEVICE_ATTR(info_flags, 0444, edd_show_info_flags, NULL);
static EDD_DEVICE_ATTR(sectors, 0444, edd_show_sectors, NULL);
static EDD_DEVICE_ATTR(default_cylinders, 0444, edd_show_default_cylinders,
edd_has_default_cylinders);
static EDD_DEVICE_ATTR(default_heads, 0444, edd_show_default_heads,
edd_has_default_heads);
static EDD_DEVICE_ATTR(default_sectors_per_track, 0444,
edd_show_default_sectors_per_track,
edd_has_default_sectors_per_track);
static EDD_DEVICE_ATTR(interface, 0444, edd_show_interface, edd_has_edd30);
static EDD_DEVICE_ATTR(host_bus, 0444, edd_show_host_bus, edd_has_edd30);
static struct edd_attribute * def_attrs[] = {
&edd_attr_raw_data,
&edd_attr_version,
&edd_attr_extensions,
&edd_attr_info_flags,
&edd_attr_sectors,
&edd_attr_default_cylinders,
&edd_attr_default_heads,
&edd_attr_default_sectors_per_track,
&edd_attr_interface,
&edd_attr_host_bus,
NULL,
};
/* edd_get_devpath_length(), edd_fill_devpath(), and edd_device_link()
......@@ -857,23 +848,19 @@ edd_create_file(struct edd_device *edev, struct edd_attribute *attr)
static inline void
edd_device_unregister(struct edd_device *edev)
{
driverfs_remove_file(&edev->dir, "pci_dev");
driverfs_remove_file(&edev->dir, "disc");
driverfs_remove_dir(&edev->dir);
list_del_init(&edev->node);
}
static int
edd_populate_dir(struct edd_device *edev)
{
struct attr_test *s;
struct edd_attribute *attr;
int i;
int error = 0;
for (i = 0; def_attrs[i].attr; i++) {
s = &def_attrs[i];
if (!s->test || (s->test && !s->test(edev))) {
if ((error = edd_create_file(edev, s->attr))) {
for (i = 0; (attr=def_attrs[i]); i++) {
if (!attr->test || (attr->test && !attr->test(edev))) {
if ((error = edd_create_file(edev, attr))) {
break;
}
}
......@@ -928,7 +915,7 @@ static int __init
edd_init(void)
{
unsigned int i;
int rc;
int rc=0;
struct edd_device *edev;
printk(KERN_INFO "BIOS EDD facility v%s, %d devices found\n",
......
......@@ -471,7 +471,8 @@ static int __init copy_e820_map(struct e820entry * biosmap, int nr_map)
unsigned char eddnr;
struct edd_info edd[EDDNR];
/**
* copy_edd() - Copy the BIOS EDD information into a safe place.
* copy_edd() - Copy the BIOS EDD information
* from empty_zero_page into a safe place.
*
*/
static inline void copy_edd(void)
......
......@@ -36,6 +36,10 @@
#define EDDMAXNR 6 /* number of edd_info structs starting at EDDBUF */
#define EDDEXTSIZE 4 /* change these if you muck with the structures */
#define EDDPARMSIZE 74
#define CHECKEXTENSIONSPRESENT 0x41
#define GETDEVICEPARAMETERS 0x48
#define EDDMAGIC1 0x55AA
#define EDDMAGIC2 0xAA55
#ifndef __ASSEMBLY__
......
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