unimore/kernel-hacking-2024-linux-steffo
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sh: Workaround for __put_user_asm() bug with gcc 4.x on big-endian.

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I think this problem is GCC(4.1.2) bug.
Syscall "getdents" returned "dirent->d_off" is always 0.
I think other EB enviroment have same problem.

Problem code
0c03c954 <filldir>:
 :
 c03c97a:       58 f7           mov.l   @(28,r15),r8 !-> offset (high)
 c03c97c:       59 f8           mov.l   @(32,r15),r9 !-> offset (low)
 c03c97e:       53 f9           mov.l   @(36,r15),r3
 c03c980:       54 fa           mov.l   @(40,r15),r4
 :
 c03c9a0:       21 82           mov.l   r8,@r1 !offset(high) -> dirent->d_off

It's workaround patch.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Yoshinori Sato 2008-07-28 18:36:13 +09:00 committed by Paul Mundt
parent 44f9598952
commit 2b4b2bb421
1 changed files with 2 additions and 1 deletions
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3
include/asm-sh/uaccess_32.h
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@ -76,7 +76,8 @@ do { \
__put_user_asm(x, ptr, retval, "w"); \
break; \
case 4: \
__put_user_asm(x, ptr, retval, "l"); \
__put_user_asm((u32)x, ptr, \
retval, "l"); \
break; \
case 8: \
__put_user_u64(x, ptr, retval); \