From: David Woodhouse <dwmw2@infradead.org>
To: linux-sparse@vger.kernel.org
Subject: [PATCH] Add GCC's byteswap intrinsics
Date: Thu, 13 Dec 2012 13:45:04 +0000 [thread overview]
Message-ID: <1355406304.19560.39.camel@shinybook.infradead.org> (raw)
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Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
---
I'm about to make the kernel use these:
http://git.infradead.org/users/dwmw2/byteswap.git
lib.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/lib.c b/lib.c
index 396e9f1..d747a3e 100644
--- a/lib.c
+++ b/lib.c
@@ -698,6 +698,11 @@ void declare_builtin_functions(void)
add_pre_buffer("extern int __builtin_popcountl(unsigned long);\n");
add_pre_buffer("extern int __builtin_popcountll(unsigned long long);\n");
+ /* And byte-swapping operations.. */
+ add_pre_buffer("extern short __builtin_bswap16(short);\n");
+ add_pre_buffer("extern int __builtin_bswap32(int);\n");
+ add_pre_buffer("extern long long __builtin_bswap64(long long);\n");
+
/* And some random ones.. */
add_pre_buffer("extern void *__builtin_return_address(unsigned int);\n");
add_pre_buffer("extern void *__builtin_extract_return_addr(void *);\n");
--
1.8.0.1
--
dwmw2
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next reply other threads:[~2012-12-13 13:45 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-13 13:45 David Woodhouse [this message]
2012-12-13 16:11 ` [PATCH] Add GCC's byteswap intrinsics Josh Triplett
2012-12-13 16:29 ` David Woodhouse
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