mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2024-09-21 03:41:42 +02:00
SDCardUtil: Replace macros with typed equivalents
Instead use a general template and specify which type we're writing out.
This commit is contained in:
Lioncash
parent
3b0139b258
commit
cdeed038bd
1 changed files with 52 additions and 50 deletions
|
|
@ -58,24 +58,25 @@
|
|||
|
||||
namespace Common
|
||||
{
|
||||
/* Believe me, you *don't* want to change these constants !! */
|
||||
#define BYTES_PER_SECTOR 512
|
||||
#define RESERVED_SECTORS 32
|
||||
#define BACKUP_BOOT_SECTOR 6
|
||||
#define NUM_FATS 2
|
||||
|
||||
#define BYTE_(p, i) (((u8*)(p))[(i)])
|
||||
|
||||
#define POKEB(p, v) BYTE_(p, 0) = (u8)(v)
|
||||
#define POKES(p, v) (BYTE_(p, 0) = (u8)(v), BYTE_(p, 1) = (u8)((v) >> 8))
|
||||
#define POKEW(p, v) \
|
||||
(BYTE_(p, 0) = (u8)(v), BYTE_(p, 1) = (u8)((v) >> 8), BYTE_(p, 2) = (u8)((v) >> 16), \
|
||||
BYTE_(p, 3) = (u8)((v) >> 24))
|
||||
// Believe me, you *don't* want to change these constants !!
|
||||
enum : u32
|
||||
{
|
||||
BYTES_PER_SECTOR = 512,
|
||||
RESERVED_SECTORS = 32,
|
||||
BACKUP_BOOT_SECTOR = 6,
|
||||
NUM_FATS = 2
|
||||
};
|
||||
|
||||
static u8 s_boot_sector[BYTES_PER_SECTOR]; /* Boot sector */
|
||||
static u8 s_fsinfo_sector[BYTES_PER_SECTOR]; /* FS Info sector */
|
||||
static u8 s_fat_head[BYTES_PER_SECTOR]; /* First FAT sector */
|
||||
|
||||
template <typename T>
|
||||
static void WriteData(u8* out, T data)
|
||||
{
|
||||
std::memcpy(out, &data, sizeof(data));
|
||||
}
|
||||
|
||||
/* This is the date and time when creating the disk */
|
||||
static unsigned int get_serial_id()
|
||||
{
|
||||
|
|
@ -127,54 +128,55 @@ static void boot_sector_init(u8* boot, u8* info, u64 disk_size, const char* labe
|
|||
if (label == nullptr)
|
||||
label = "DOLPHINSD";
|
||||
|
||||
POKEB(boot, 0xeb);
|
||||
POKEB(boot + 1, 0x5a);
|
||||
POKEB(boot + 2, 0x90);
|
||||
WriteData<u8>(boot, 0xeb);
|
||||
WriteData<u8>(boot + 1, 0x5a);
|
||||
WriteData<u8>(boot + 2, 0x90);
|
||||
strcpy((char*)boot + 3, "MSWIN4.1");
|
||||
POKES(boot + 0x0b, BYTES_PER_SECTOR); /* Sector size */
|
||||
POKEB(boot + 0xd, sectors_per_cluster); /* Sectors per cluster */
|
||||
POKES(boot + 0xe, RESERVED_SECTORS); /* Reserved sectors before first FAT */
|
||||
POKEB(boot + 0x10, NUM_FATS); /* Number of FATs */
|
||||
POKES(boot + 0x11, 0); /* Max root directory entries for FAT12/FAT16, 0 for FAT32 */
|
||||
POKES(boot + 0x13, 0); /* Total sectors, 0 to use 32-bit value at offset 0x20 */
|
||||
POKEB(boot + 0x15, 0xF8); /* Media descriptor, 0xF8 == hard disk */
|
||||
POKES(boot + 0x16, 0); /* Sectors per FAT for FAT12/16, 0 for FAT32 */
|
||||
POKES(boot + 0x18, 9); /* Sectors per track (whatever) */
|
||||
POKES(boot + 0x1a, 2); /* Number of heads (whatever) */
|
||||
POKEW(boot + 0x1c, 0); /* Hidden sectors */
|
||||
POKEW(boot + 0x20, sectors_per_disk); /* Total sectors */
|
||||
WriteData<u16>(boot + 0x0b, BYTES_PER_SECTOR); // Sector size
|
||||
WriteData<u8>(boot + 0xd, sectors_per_cluster); // Sectors per cluster
|
||||
WriteData<u16>(boot + 0xe, RESERVED_SECTORS); // Reserved sectors before first FAT
|
||||
WriteData<u8>(boot + 0x10, NUM_FATS); // Number of FATs
|
||||
WriteData<u16>(boot + 0x11, 0); // Max root directory entries for FAT12/FAT16, 0 for FAT32
|
||||
WriteData<u16>(boot + 0x13, 0); // Total sectors, 0 to use 32-bit value at offset 0x20
|
||||
WriteData<u8>(boot + 0x15, 0xF8); // Media descriptor, 0xF8 == hard disk
|
||||
WriteData<u16>(boot + 0x16, 0); // Sectors per FAT for FAT12/16, 0 for FAT32
|
||||
WriteData<u16>(boot + 0x18, 9); // Sectors per track (whatever)
|
||||
WriteData<u16>(boot + 0x1a, 2); // Number of heads (whatever)
|
||||
WriteData<u32>(boot + 0x1c, 0); // Hidden sectors
|
||||
WriteData<u32>(boot + 0x20, sectors_per_disk); // Total sectors
|
||||
|
||||
/* Extension */
|
||||
POKEW(boot + 0x24, sectors_per_fat); /* Sectors per FAT */
|
||||
POKES(boot + 0x28, 0); /* FAT flags */
|
||||
POKES(boot + 0x2a, 0); /* Version */
|
||||
POKEW(boot + 0x2c, 2); /* Cluster number of root directory start */
|
||||
POKES(boot + 0x30, 1); /* Sector number of FS information sector */
|
||||
POKES(boot + 0x32, BACKUP_BOOT_SECTOR); /* Sector number of a copy of this boot sector */
|
||||
POKEB(boot + 0x40, 0x80); /* Physical drive number */
|
||||
POKEB(boot + 0x42, 0x29); /* Extended boot signature ?? */
|
||||
POKEW(boot + 0x43, serial_id); /* Serial ID */
|
||||
strncpy((char*)boot + 0x47, label, 11); /* Volume Label */
|
||||
memcpy(boot + 0x52, "FAT32 ", 8); /* FAT system type, padded with 0x20 */
|
||||
// Extension
|
||||
WriteData<u32>(boot + 0x24, sectors_per_fat); // Sectors per FAT
|
||||
WriteData<u16>(boot + 0x28, 0); // FAT flags
|
||||
WriteData<u16>(boot + 0x2a, 0); // Version
|
||||
WriteData<u32>(boot + 0x2c, 2); // Cluster number of root directory start
|
||||
WriteData<u16>(boot + 0x30, 1); // Sector number of FS information sector
|
||||
WriteData<u16>(boot + 0x32, BACKUP_BOOT_SECTOR); // Sector number of a copy of this boot sector
|
||||
WriteData<u8>(boot + 0x40, 0x80); // Physical drive number
|
||||
WriteData<u8>(boot + 0x42, 0x29); // Extended boot signature ??
|
||||
WriteData<u32>(boot + 0x43, serial_id); // Serial ID
|
||||
strncpy((char*)boot + 0x47, label, 11); // Volume Label
|
||||
memcpy(boot + 0x52, "FAT32 ", 8); // FAT system type, padded with 0x20
|
||||
|
||||
POKEB(boot + BYTES_PER_SECTOR - 2, 0x55); /* Boot sector signature */
|
||||
POKEB(boot + BYTES_PER_SECTOR - 1, 0xAA);
|
||||
WriteData<u8>(boot + BYTES_PER_SECTOR - 2, 0x55); // Boot sector signature
|
||||
WriteData<u8>(boot + BYTES_PER_SECTOR - 1, 0xAA);
|
||||
|
||||
/* FSInfo sector */
|
||||
const u32 free_count = sectors_per_disk - 32 - 2 * sectors_per_fat;
|
||||
|
||||
POKEW(info + 0, 0x41615252);
|
||||
POKEW(info + 484, 0x61417272);
|
||||
POKEW(info + 488, free_count); /* Number of free clusters */
|
||||
POKEW(info + 492, 3); /* Next free clusters, 0-1 reserved, 2 is used for the root dir */
|
||||
POKEW(info + 508, 0xAA550000);
|
||||
WriteData<u32>(info + 0, 0x41615252);
|
||||
WriteData<u32>(info + 484, 0x61417272);
|
||||
WriteData<u32>(info + 488, free_count); // Number of free clusters
|
||||
// Next free clusters, 0-1 reserved, 2 is used for the root dir
|
||||
WriteData<u32>(info + 492, 3);
|
||||
WriteData<u32>(info + 508, 0xAA550000);
|
||||
}
|
||||
|
||||
static void fat_init(u8* fat)
|
||||
{
|
||||
POKEW(fat, 0x0ffffff8); /* Reserve cluster 1, media id in low byte */
|
||||
POKEW(fat + 4, 0x0fffffff); /* Reserve cluster 2 */
|
||||
POKEW(fat + 8, 0x0fffffff); /* End of cluster chain for root dir */
|
||||
WriteData<u32>(fat, 0x0ffffff8); // Reserve cluster 1, media id in low byte
|
||||
WriteData<u32>(fat + 4, 0x0fffffff); // Reserve cluster 2
|
||||
WriteData<u32>(fat + 8, 0x0fffffff); // End of cluster chain for root dir
|
||||
}
|
||||
|
||||
static bool write_sector(File::IOFile& file, const u8* sector)
|
||||
|
|
|
|||
Loading…
Reference in a new issue