vitalif
/
e2fsprogs
mirror of https://github.com/vitalif/e2fsprogs
1
0
Fork 0
Code Issues Releases Wiki Activity

bitops.h (ext2fs_find_first_bit_set): Use %esi instead of %ebx to 

avoid register conflicts when compiling in PIC mode.
bitmap-optimize
Theodore Ts'o 2001-07-07 22:14:23 -04:00
parent e667687581
commit f41e7e6961
2 changed files with 7 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
lib/ext2fs/ChangeLog
View File

@ -1,3 +1,8 @@
2001-07-07 Theodore Tso <tytso@valinux.com>
* bitops.h (ext2fs_find_first_bit_set): Use %esi instead of %ebx
to avoid register conflicts when compiling in PIC mode.
2001-07-04 Theodore Tso <tytso@valinux.com>
* bitops.h (ext2fs_find_first_bit_set, ext2fs_find_next_bit_set):

6
lib/ext2fs/bitops.h
View File

@ -157,7 +157,6 @@ _INLINE_ int ext2fs_test_bit(int nr, const void * addr)
return oldbit;
}
#ifndef C_VERSIONS
_INLINE_ int ext2fs_find_first_bit_set(void * addr, unsigned size)
{
int d0, d1, d2;
@ -175,11 +174,11 @@ _INLINE_ int ext2fs_find_first_bit_set(void * addr, unsigned size)
"movl -4(%%edi),%%eax\n\t"
"subl $4,%%edi\n\t"
"bsfl %%eax,%%edx\n"
"1:\tsubl %%ebx,%%edi\n\t"
"1:\tsubl %%esi,%%edi\n\t"
"shll $3,%%edi\n\t"
"addl %%edi,%%edx"
:"=d" (res), "=&c" (d0), "=&D" (d1), "=&a" (d2)
:"1" ((size + 31) >> 5), "2" (addr), "b" (addr));
:"1" ((size + 31) >> 5), "2" (addr), "S" (addr));
return res;
}
@ -209,7 +208,6 @@ _INLINE_ int ext2fs_find_next_bit_set (void * addr, int size, int offset)
res = ext2fs_find_first_bit_set(p, size - 32 * (p - (unsigned long *) addr));
return (offset + set + res);
}
#endif
#ifdef EXT2FS_ENABLE_SWAPFS
_INLINE_ __u32 ext2fs_swab32(__u32 val)