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* grub-core/kern/misc.c (grub_divmod64): Don't fallback to 

simple division on arm and ia64.
This commit is contained in:
Vladimir Serbinenko 2013-11-08 09:07:33 +01:00
parent e0a7bffa1e
commit c4f11a2a99
2 changed files with 11 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2013-11-08 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/kern/misc.c (grub_divmod64): Don't fallback to
simple division on arm and ia64.
2013-11-08 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/kern/arm/misc.S (__aeabi_unwind_cpp_pr0): Add dummy to

6
grub-core/kern/misc.c
View File

@ -551,6 +551,11 @@ grub_divmod64 (grub_uint64_t n, grub_uint64_t d, grub_uint64_t *r)
grub_uint64_t q = 0;
grub_uint64_t m = 0;
/* ARM and IA64 don't have a fast 32-bit division.
Using that code would just make us use libgcc routines, calling
them twice (once for modulo and once for quotient.
*/
#if !defined (__arm__) && !defined (__ia64__)
/* Skip the slow computation if 32-bit arithmetic is possible. */
if (n < 0xffffffff && d < 0xffffffff)
{
@ -559,6 +564,7 @@ grub_divmod64 (grub_uint64_t n, grub_uint64_t d, grub_uint64_t *r)
return ((grub_uint32_t) n) / (grub_uint32_t) d;
}
#endif
while (bits--)
{