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Use full 64-bit division.

Browse source 
* grub-core/kern/misc.c (grub_divmod64_full): Renamed to ...
	(grub_divmod64): ... this.
	* include/grub/misc.h (grub_divmod64): Removed. All users switch to full
	version.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2011-05-18 15:35:19 +02:00
parent b84f26c549
commit bf947d36e3
15 changed files with 46 additions and 44 deletions
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9
ChangeLog
View file

@ -1,3 +1,12 @@
2011-05-18 Vladimir Serbinenko <phcoder@gmail.com>
Use full 64-bit division.
* grub-core/kern/misc.c (grub_divmod64_full): Renamed to ...
(grub_divmod64): ... this.
* include/grub/misc.h (grub_divmod64): Removed. All users switch to full
version.
2011-05-18 Colin Watson <cjwatson@ubuntu.com>
* util/grub-mkrescue.in: Use portable `.' rather than non-portable

5
grub-core/commands/ls.c
View file

@ -134,11 +134,12 @@ grub_ls_list_files (char *dirname, int longlist, int all, int human)
if (units)
{
grub_uint32_t whole, fraction;
grub_uint64_t whole, fraction;
whole = grub_divmod64 (fsize, 100, &fraction);
grub_snprintf (buf, sizeof (buf),
"%u.%02u%c", whole, fraction,
"%" PRIuGRUB_UINT64_T
".%02" PRIuGRUB_UINT64_T "%c", whole, fraction,
grub_human_sizes[units]);
grub_printf ("%-12s", buf);
}

2
grub-core/disk/i386/pc/biosdisk.c
View file

@ -506,7 +506,7 @@ static grub_size_t
get_safe_sectors (grub_disk_addr_t sector, grub_uint32_t sectors)
{
grub_size_t size;
grub_uint32_t offset;
grub_uint64_t offset;
/* OFFSET = SECTOR % SECTORS */
grub_divmod64 (sector, sectors, &offset);

4
grub-core/disk/lvm.c
View file

@ -247,9 +247,9 @@ read_lv (struct grub_lvm_lv *lv, grub_disk_addr_t sector,
/* This is a striped segment. We have to find the right PV
similar to RAID0. */
struct grub_lvm_node *stripe = seg->nodes;
grub_uint32_t a, b;
grub_uint64_t a, b;
grub_uint64_t seg_offset; /* Offset of the segment in PV device. */
unsigned int stripenr;
grub_uint64_t stripenr;
offset = sector - ((grub_uint64_t) seg->start_extent
* (grub_uint64_t) vg->extent_size);

4
grub-core/disk/raid.c
View file

@ -245,7 +245,7 @@ grub_raid_read (grub_disk_t disk, grub_disk_addr_t sector,
case 10:
{
grub_disk_addr_t read_sector, far_ofs;
grub_uint32_t disknr, b, near, far, ofs;
grub_uint64_t disknr, b, near, far, ofs;
read_sector = grub_divmod64 (sector, array->chunk_size, &b);
far = ofs = near = 1;
@ -351,7 +351,7 @@ grub_raid_read (grub_disk_t disk, grub_disk_addr_t sector,
case 6:
{
grub_disk_addr_t read_sector;
grub_uint32_t b, p, n, disknr, e;
grub_uint64_t b, p, n, disknr, e;
/* n = 1 for level 4 and 5, 2 for level 6. */
n = array->level / 3;

2
grub-core/disk/scsi.c
View file

@ -512,7 +512,7 @@ grub_scsi_read (grub_disk_t disk, grub_disk_addr_t sector,
return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
"unsupported SCSI block size");
grub_uint32_t sector_mod = 0;
grub_uint64_t sector_mod = 0;
sector = grub_divmod64 (sector, spb, &sector_mod);
if (! (sector_mod == 0 && size % spb == 0))

2
grub-core/fs/affs.c
View file

@ -125,7 +125,7 @@ grub_affs_read_block (grub_fshelp_node_t node, grub_disk_addr_t fileblock)
int block = node->block;
struct grub_affs_file file;
struct grub_affs_data *data = node->data;
grub_uint32_t mod;
grub_uint64_t mod;
/* Find the block that points to the fileblock we are looking up by
following the chain until the right table is reached. */

16
grub-core/fs/btrfs.c
View file

@ -649,7 +649,7 @@ grub_btrfs_read_logical (struct grub_btrfs_data *data,
chunk_found:
{
grub_uint32_t stripen;
grub_uint64_t stripen;
grub_uint64_t stripe_offset;
grub_uint64_t off = addr - grub_le_to_cpu64 (key->offset);
unsigned redundancy = 1;
@ -679,10 +679,10 @@ grub_btrfs_read_logical (struct grub_btrfs_data *data,
{
grub_uint64_t stripe_length;
grub_dprintf ("btrfs", "single\n");
stripe_length = grub_divmod64_full (grub_le_to_cpu64 (chunk->size),
grub_le_to_cpu16 (chunk->nstripes),
NULL);
stripen = grub_divmod64_full (off, stripe_length, &stripe_offset);
stripe_length = grub_divmod64 (grub_le_to_cpu64 (chunk->size),
grub_le_to_cpu16 (chunk->nstripes),
NULL);
stripen = grub_divmod64 (off, stripe_length, &stripe_offset);
csize = (stripen + 1) * stripe_length - off;
break;
}
@ -699,7 +699,7 @@ grub_btrfs_read_logical (struct grub_btrfs_data *data,
case GRUB_BTRFS_CHUNK_TYPE_RAID0:
{
grub_uint64_t middle, high;
grub_uint32_t low;
grub_uint64_t low;
grub_dprintf ("btrfs", "RAID0\n");
middle = grub_divmod64 (off,
grub_le_to_cpu64 (chunk->stripe_length),
@ -715,7 +715,7 @@ grub_btrfs_read_logical (struct grub_btrfs_data *data,
case GRUB_BTRFS_CHUNK_TYPE_RAID10:
{
grub_uint64_t middle, high;
grub_uint32_t low;
grub_uint64_t low;
middle = grub_divmod64 (off,
grub_le_to_cpu64 (chunk->stripe_length),
&low);
@ -760,7 +760,7 @@ grub_btrfs_read_logical (struct grub_btrfs_data *data,
grub_dprintf ("btrfs", "chunk 0x%" PRIxGRUB_UINT64_T
"+0x%" PRIxGRUB_UINT64_T " (%d stripes (%d substripes) of %"
PRIxGRUB_UINT64_T ") stripe %" PRIxGRUB_UINT32_T
PRIxGRUB_UINT64_T ") stripe %" PRIxGRUB_UINT64_T
" maps to 0x%" PRIxGRUB_UINT64_T "\n",
grub_le_to_cpu64 (key->offset),
grub_le_to_cpu64 (chunk->size),

3
grub-core/fs/i386/pc/pxe.c
View file

@ -306,7 +306,8 @@ grub_pxefs_read (grub_file_t file, char *buf, grub_size_t len)
struct grub_pxenv_tftp_read c;
struct grub_pxe_data *data;
struct grub_pxe_disk_data *disk_data = file->device->disk->data;
grub_uint32_t pn, r;
grub_uint32_t pn;
grub_uint64_t r;
data = file->data;

4
grub-core/fs/minix.c
View file

@ -229,7 +229,7 @@ grub_minix_read_file (struct grub_minix_data *data,
grub_disk_addr_t i;
grub_disk_addr_t blockcnt;
grub_uint64_t posblock;
grub_uint32_t blockoff;
grub_uint64_t blockoff;
/* Adjust len so it we can't read past the end of the file. */
if (len + pos > GRUB_MINIX_INODE_SIZE (data))
@ -242,7 +242,7 @@ grub_minix_read_file (struct grub_minix_data *data,
for (i = posblock; i < blockcnt; i++)
{
grub_disk_addr_t blknr;
grub_uint32_t blockend = data->block_size;
grub_uint64_t blockend = data->block_size;
grub_off_t skipfirst = 0;
blknr = grub_minix_get_file_block (data, i);

14
grub-core/fs/nilfs2.c
View file

@ -303,7 +303,7 @@ grub_nilfs2_palloc_entries_per_group (struct grub_nilfs2_data *data)
static inline grub_uint64_t
grub_nilfs2_palloc_group (struct grub_nilfs2_data *data,
grub_uint64_t nr, grub_uint32_t * offset)
grub_uint64_t nr, grub_uint64_t * offset)
{
return grub_divmod64 (nr, grub_nilfs2_palloc_entries_per_group (data),
offset);
@ -368,13 +368,15 @@ grub_nilfs2_palloc_entry_offset (struct grub_nilfs2_data *data,
grub_uint64_t nr, unsigned long entry_size)
{
unsigned long group;
grub_uint32_t group_offset;
grub_uint64_t group_offset;
group = grub_nilfs2_palloc_group (data, nr, &group_offset);
return grub_nilfs2_palloc_bitmap_block_offset (data, group,
entry_size) + 1 +
group_offset / grub_nilfs2_entries_per_block (data, entry_size);
grub_divmod64 (group_offset, grub_nilfs2_entries_per_block (data,
entry_size),
NULL);
}
@ -577,7 +579,7 @@ grub_nilfs2_dat_translate (struct grub_nilfs2_data *data, grub_uint64_t key)
struct grub_nilfs2_dat_entry entry;
grub_disk_t disk = data->disk;
grub_uint64_t pptr;
grub_uint32_t blockno, offset;
grub_uint64_t blockno, offset;
unsigned int nilfs2_block_count = (1 << LOG2_NILFS2_BLOCK_SIZE (data));
blockno = grub_nilfs2_palloc_entry_offset (data, key,
@ -641,7 +643,7 @@ grub_nilfs2_read_checkpoint (struct grub_nilfs2_data *data,
struct grub_nilfs2_checkpoint *cpp)
{
grub_uint64_t blockno;
grub_uint32_t offset;
grub_uint64_t offset;
grub_uint64_t pptr;
grub_disk_t disk = data->disk;
unsigned int nilfs2_block_count = (1 << LOG2_NILFS2_BLOCK_SIZE (data));
@ -679,7 +681,7 @@ grub_nilfs2_read_inode (struct grub_nilfs2_data *data,
grub_uint64_t ino, struct grub_nilfs2_inode *inodep)
{
grub_uint64_t blockno;
unsigned int offset;
grub_uint64_t offset;
grub_uint64_t pptr;
grub_disk_t disk = data->disk;
unsigned int nilfs2_block_count = (1 << LOG2_NILFS2_BLOCK_SIZE (data));

2
grub-core/fs/ntfs.c
View file

@ -431,7 +431,7 @@ read_data (struct grub_ntfs_attr *at, char *pa, char *dest,
if (at->flags & AF_GPOS)
{
grub_disk_addr_t st0, st1;
grub_uint32_t m;
grub_uint64_t m;
grub_divmod64 (ofs >> BLK_SHR, ctx->comp.spc, &m);

2
grub-core/io/bufio.c
View file

@ -106,7 +106,7 @@ grub_bufio_read (grub_file_t file, char *buf, grub_size_t len)
{
grub_size_t res = len;
grub_bufio_t bufio = file->data;
grub_uint32_t pos;
grub_uint64_t pos;
if ((file->offset >= bufio->file->offset) &&
(file->offset < bufio->file->offset + bufio->buffer_len))

4
grub-core/kern/misc.c
View file

@ -597,7 +597,7 @@ grub_reverse (char *str)
/* Divide N by D, return the quotient, and store the remainder in *R. */
grub_uint64_t
grub_divmod64_full (grub_uint64_t n, grub_uint64_t d, grub_uint64_t *r)
grub_divmod64 (grub_uint64_t n, grub_uint64_t d, grub_uint64_t *r)
{
/* This algorithm is typically implemented by hardware. The idea
is to get the highest bit in N, 64 times, by keeping
@ -666,7 +666,7 @@ grub_lltoa (char *str, int c, unsigned long long n)
/* BASE == 10 */
do
{
unsigned m;
grub_uint64_t m;
n = grub_divmod64 (n, 10, &m);
*p++ = m + '0';

17
include/grub/misc.h
View file

@ -287,20 +287,9 @@ char *EXPORT_FUNC(grub_xasprintf) (const char *fmt, ...)
char *EXPORT_FUNC(grub_xvasprintf) (const char *fmt, va_list args) __attribute__ ((warn_unused_result));
void EXPORT_FUNC(grub_exit) (void) __attribute__ ((noreturn));
void EXPORT_FUNC(grub_abort) (void) __attribute__ ((noreturn));
grub_uint64_t EXPORT_FUNC(grub_divmod64_full) (grub_uint64_t n,
grub_uint64_t d,
grub_uint64_t *r);
static inline grub_uint64_t grub_divmod64 (grub_uint64_t n,
grub_uint32_t d,
grub_uint32_t *r)
{
grub_uint64_t ret, rr;
ret = grub_divmod64_full (n, d, &rr);
if (r)
*r = rr;
return ret;
}
grub_uint64_t EXPORT_FUNC(grub_divmod64) (grub_uint64_t n,
grub_uint64_t d,
grub_uint64_t *r);
#if NEED_ENABLE_EXECUTE_STACK && !defined(GRUB_UTIL)
void EXPORT_FUNC(__enable_execute_stack) (void *addr);