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-rw-r--r--arch/x86/include/asm/word-at-a-time.h46
1 files changed, 3 insertions, 43 deletions
diff --git a/arch/x86/include/asm/word-at-a-time.h b/arch/x86/include/asm/word-at-a-time.h
index 8338b0432b50..46b4f1f7f354 100644
--- a/arch/x86/include/asm/word-at-a-time.h
+++ b/arch/x86/include/asm/word-at-a-time.h
@@ -77,58 +77,18 @@ static inline unsigned long find_zero(unsigned long mask)
* and the next page not being mapped, take the exception and
* return zeroes in the non-existing part.
*/
-#ifdef CONFIG_CC_HAS_ASM_GOTO_OUTPUT
-
static inline unsigned long load_unaligned_zeropad(const void *addr)
{
- unsigned long offset, data;
unsigned long ret;
- asm_volatile_goto(
+ asm volatile(
"1: mov %[mem], %[ret]\n"
-
- _ASM_EXTABLE(1b, %l[do_exception])
-
- : [ret] "=r" (ret)
- : [mem] "m" (*(unsigned long *)addr)
- : : do_exception);
-
- return ret;
-
-do_exception:
- offset = (unsigned long)addr & (sizeof(long) - 1);
- addr = (void *)((unsigned long)addr & ~(sizeof(long) - 1));
- data = *(unsigned long *)addr;
- ret = data >> offset * 8;
-
- return ret;
-}
-
-#else /* !CONFIG_CC_HAS_ASM_GOTO_OUTPUT */
-
-static inline unsigned long load_unaligned_zeropad(const void *addr)
-{
- unsigned long offset, data;
- unsigned long ret, err = 0;
-
- asm( "1: mov %[mem], %[ret]\n"
"2:\n"
-
- _ASM_EXTABLE_FAULT(1b, 2b)
-
- : [ret] "=&r" (ret), "+a" (err)
+ _ASM_EXTABLE_TYPE(1b, 2b, EX_TYPE_ZEROPAD)
+ : [ret] "=r" (ret)
: [mem] "m" (*(unsigned long *)addr));
- if (unlikely(err)) {
- offset = (unsigned long)addr & (sizeof(long) - 1);
- addr = (void *)((unsigned long)addr & ~(sizeof(long) - 1));
- data = *(unsigned long *)addr;
- ret = data >> offset * 8;
- }
-
return ret;
}
-#endif /* CONFIG_CC_HAS_ASM_GOTO_OUTPUT */
-
#endif /* _ASM_WORD_AT_A_TIME_H */