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Groups > linux.kernel > #1417809
| From | "H. Peter Anvin" <hpa@linux.intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 06/10] x86, asm: Use CC_SET()/CC_OUT() in <asm/bitops.h> |
| Date | 2016-06-08 21:50 +0200 |
| Message-ID | <rHREd-4nR-13@gated-at.bofh.it> (permalink) |
| References | <rHRux-4jK-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: "H. Peter Anvin" <hpa@zytor.com>
Remove open-coded uses of set instructions to use CC_SET()/CC_OUT() in
<asm/bitops.h>.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
arch/x86/include/asm/bitops.h | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h
index ed8f485..68557f52 100644
--- a/arch/x86/include/asm/bitops.h
+++ b/arch/x86/include/asm/bitops.h
@@ -233,8 +233,8 @@ static __always_inline bool __test_and_set_bit(long nr, volatile unsigned long *
bool oldbit;
asm("bts %2,%1\n\t"
- "setc %0"
- : "=qm" (oldbit), ADDR
+ CC_SET(c)
+ : CC_OUT(c) (oldbit), ADDR
: "Ir" (nr));
return oldbit;
}
@@ -273,8 +273,8 @@ static __always_inline bool __test_and_clear_bit(long nr, volatile unsigned long
bool oldbit;
asm volatile("btr %2,%1\n\t"
- "setc %0"
- : "=qm" (oldbit), ADDR
+ CC_SET(c)
+ : CC_OUT(c) (oldbit), ADDR
: "Ir" (nr));
return oldbit;
}
@@ -285,8 +285,8 @@ static __always_inline bool __test_and_change_bit(long nr, volatile unsigned lon
bool oldbit;
asm volatile("btc %2,%1\n\t"
- "setc %0"
- : "=qm" (oldbit), ADDR
+ CC_SET(c)
+ : CC_OUT(c) (oldbit), ADDR
: "Ir" (nr) : "memory");
return oldbit;
@@ -316,8 +316,8 @@ static __always_inline bool variable_test_bit(long nr, volatile const unsigned l
bool oldbit;
asm volatile("bt %2,%1\n\t"
- "setc %0"
- : "=qm" (oldbit)
+ CC_SET(c)
+ : CC_OUT(c) (oldbit)
: "m" (*(unsigned long *)addr), "Ir" (nr));
return oldbit;
--
2.7.3.0.11.gd79db92
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[PATCH v2 00/10] x86: use gcc 6+ asm flag output feature "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:40 +0200
[PATCH v2 10/10] x86, asm: Use CC_SET()/CC_OUT() and static_cpu_has() in archrandom.h "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:40 +0200
[tip:x86/asm] x86, asm: Use CC_SET()/CC_OUT() and static_cpu_has() in archrandom.h "tip-bot for H. Peter Anvin" <tipbot@zytor.com> - 2016-06-08 22:00 +0200
Re: [PATCH v2 10/10] x86, asm: Use CC_SET()/CC_OUT() and static_cpu_has() in archrandom.h Borislav Petkov <bp@alien8.de> - 2016-06-09 17:50 +0200
[PATCH v2 04/10] x86, asm: define CC_SET() and CC_OUT() macros "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:40 +0200
[tip:x86/asm] x86, asm: define CC_SET() and CC_OUT() macros "tip-bot for H. Peter Anvin" <tipbot@zytor.com> - 2016-06-08 21:50 +0200
[PATCH v2 06/10] x86, asm: Use CC_SET()/CC_OUT() in <asm/bitops.h> "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:50 +0200
[PATCH v2 02/10] x86, asm: use bool for bitops and other assembly outputs "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:50 +0200
[PATCH v2 08/10] x86, asm: Use CC_SET()/CC_OUT() in <asm/rwsem.h> "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:50 +0200
[PATCH v2 07/10] x86, asm: Use CC_SET()/CC_OUT() in <asm/percpu.h> "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:50 +0200
[PATCH v2 05/10] x86, asm: change GEN_*_RMWcc() to use CC_SET()/CC_OUT() "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:50 +0200
[PATCH v2 03/10] x86, asm: change the GEN_*_RMWcc() macros to not quote the condition "H. Peter Anvin" <hpa@linux.intel.com> - 2016-06-08 21:50 +0200
Re: [PATCH v2 00/10] x86: use gcc 6+ asm flag output feature "H. Peter Anvin" <hpa@zytor.com> - 2016-06-08 23:40 +0200
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