From: Harvey Harrison <harvey.harrison@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 01/21] lib: add byteorder helpers for the aligned case
Date: Tue, 20 May 2008 11:05:21 -0700 [thread overview]
Message-ID: <1211306721.5915.167.camel@brick> (raw)
Some users know the pointer they are writeing to are aligned,
rather than doing *(__le16 *)ptr = cpu_to_le16(val) add helpers
wrapping this up that have the same convention as put_unaligned_le/be.
Although the get_be/le versions duplicate the le16_to_cpup functionality
add them anyway as it makes this a complete api and start work to
eliminate {le|be}{16|32|64}_to_cpup uses (not many).
This makes the api look like:
get_unaligned_le16
put_unaligned_le16
get_le16
put_le16
With explicit alignment constraints.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
---
include/linux/byteorder/generic.h | 60 +++++++++++++++++++++++++++++++++++++
1 files changed, 60 insertions(+), 0 deletions(-)
diff --git a/include/linux/byteorder/generic.h b/include/linux/byteorder/generic.h
index 0846e6b..1f0c07e 100644
--- a/include/linux/byteorder/generic.h
+++ b/include/linux/byteorder/generic.h
@@ -119,6 +119,66 @@
#define cpu_to_be16s __cpu_to_be16s
#define be16_to_cpus __be16_to_cpus
+static inline u16 get_le16(void *ptr)
+{
+ return le16_to_cpu(*(__le16 *)ptr);
+}
+
+static inline u32 get_le32(void *ptr)
+{
+ return le32_to_cpu(*(__le32 *)ptr);
+}
+
+static inline u64 get_le64(void *ptr)
+{
+ return le64_to_cpu(*(__le64 *)ptr);
+}
+
+static inline u16 get_be16(void *ptr)
+{
+ return be16_to_cpu(*(__be16 *)ptr);
+}
+
+static inline u32 get_be32(void *ptr)
+{
+ return be32_to_cpu(*(__be32 *)ptr);
+}
+
+static inline u64 get_be64(void *ptr)
+{
+ return be64_to_cpu(*(__be64 *)ptr);
+}
+
+static inline void put_le16(u16 val, void *ptr)
+{
+ *(__le16 *)ptr = cpu_to_le16(val);
+}
+
+static inline void put_le32(u32 val, void *ptr)
+{
+ *(__le32 *)ptr = cpu_to_le32(val);
+}
+
+static inline void put_le64(u64 val, void *ptr)
+{
+ *(__le64 *)ptr = cpu_to_le64(val);
+}
+
+static inline void put_be16(u16 val, void *ptr)
+{
+ *(__be16 *)ptr = cpu_to_be16(val);
+}
+
+static inline void put_be32(u32 val, void *ptr)
+{
+ *(__be32 *)ptr = cpu_to_be32(val);
+}
+
+static inline void put_be64(u64 val, void *ptr)
+{
+ *(__be64 *)ptr = cpu_to_be64(val);
+}
+
/*
* They have to be macros in order to do the constant folding
* correctly - if the argument passed into a inline function
--
1.5.5.1.570.g26b5e
next reply other threads:[~2008-05-20 18:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-20 18:05 Harvey Harrison [this message]
2008-05-23 13:13 ` [PATCH 01/21] lib: add byteorder helpers for the aligned case Pavel Machek
2008-06-24 12:54 ` byteorder helpers and void * (was: Re: [PATCH 01/21] lib: add byteorder helpers for the aligned case) Geert Uytterhoeven
2008-06-25 2:35 ` Harvey Harrison
2008-06-25 11:20 ` Geert Uytterhoeven
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1211306721.5915.167.camel@brick \
--to=harvey.harrison@gmail.com \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox