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2010-02-13 Vladimir Serbinenko <phcoder@gmail.com>

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Fix over-4GiB seek on sparc64.

	* include/grub/ieee1275/ieee1275.h (grub_ieee1275_seek):
	Replace pos_i and pos_lo with pos. All users updated.
	* include/grub/powerpc/ieee1275/ieee1275.h (GRUB_IEEE1275_CELL_SIZEOF):
	New constant.
	* include/grub/sparc64/ieee1275/ieee1275.h (GRUB_IEEE1275_CELL_SIZEOF):
	Likewise.
	* kern/ieee1275/ieee1275.c (grub_ieee1275_seek): Split pos into pos_hi
	and pos_lo.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-02-13 16:13:28 +01:00
parent bdca260795
commit ca62070b69
6 changed files with 28 additions and 6 deletions
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15
kern/ieee1275/ieee1275.c
View file

@ -284,8 +284,8 @@ grub_ieee1275_read (grub_ieee1275_ihandle_t ihandle, void *buffer,
}
int
grub_ieee1275_seek (grub_ieee1275_ihandle_t ihandle, int pos_hi,
int pos_lo, grub_ssize_t *result)
grub_ieee1275_seek (grub_ieee1275_ihandle_t ihandle, grub_disk_addr_t pos,
grub_ssize_t *result)
{
struct write_args
{
@ -299,8 +299,15 @@ grub_ieee1275_seek (grub_ieee1275_ihandle_t ihandle, int pos_hi,
INIT_IEEE1275_COMMON (&args.common, "seek", 3, 1);
args.ihandle = ihandle;
args.pos_hi = (grub_ieee1275_cell_t) pos_hi;
args.pos_lo = (grub_ieee1275_cell_t) pos_lo;
/* To prevent stupid gcc warning. */
#if GRUB_IEEE1275_CELL_SIZEOF >= 8
args.pos_hi = 0;
args.pos_lo = pos;
#else
args.pos_hi = (grub_ieee1275_cell_t) (pos >> (8 * GRUB_IEEE1275_CELL_SIZEOF));
args.pos_lo = (grub_ieee1275_cell_t)
(pos & ((1ULL << (8 * GRUB_IEEE1275_CELL_SIZEOF)) - 1));
#endif
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;