All of lore.kernel.org
 help / color / mirror / Atom feed
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



             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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.