From: Michael Neuling <mikey@neuling.org>
To: benh@kernel.crashing.org, David Woodhouse <dwmw2@infradead.org>
Cc: linuxppc-dev@ozlabs.org, viro@zeniv.linux.org.uk
Subject: [PATCH v2] powerpc: provide __bswapdi2
Date: Mon, 13 May 2013 17:20:15 +1000 [thread overview]
Message-ID: <12161.1368429615@ale.ozlabs.ibm.com> (raw)
In-Reply-To: <9813.1368428999@ale.ozlabs.ibm.com>
From: David Woodhouse <David.Woodhouse@intel.com>
Some versions of GCC apparently expect this to be provided by libgcc.
Updates from Mikey to fix 32 bit version and adding "r" to registers.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 19e096b..3bcaa7ee 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -657,6 +657,17 @@ _GLOBAL(__ucmpdi2)
li r3,2
blr
+_GLOBAL(__bswapdi2)
+ rotlwi r9,r4,8
+ rotlwi r10,r3,8
+ rlwimi r9,r4,24,0,7
+ rlwimi r10,r3,24,0,7
+ rlwimi r9,r4,24,16,23
+ rlwimi r10,r3,24,16,23
+ mr r4,r10
+ mr r3,r9
+ blr
+
_GLOBAL(abs)
srawi r4,r3,31
xor r3,r3,r4
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index 5cfa800..637bd82 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -234,6 +234,18 @@ _GLOBAL(__flush_dcache_icache)
isync
blr
+_GLOBAL(__bswapdi2)
+ srdi r8,r3,32
+ rlwinm r7,r3,8,0xffffffff
+ rlwimi r7,r3,24,0,7
+ rlwinm r9,r8,8,0xffffffff
+ rlwimi r7,r3,24,16,23
+ rlwimi r9,r8,24,0,7
+ rlwimi r9,r8,24,16,23
+ sldi r7,r7,32
+ or r7,r7,r9
+ mr r3,r7
+ blr
#if defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE)
/*
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index 78b8766..c296665 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -143,7 +143,8 @@ EXPORT_SYMBOL(__lshrdi3);
int __ucmpdi2(unsigned long long, unsigned long long);
EXPORT_SYMBOL(__ucmpdi2);
#endif
-
+long long __bswapdi2(long long);
+EXPORT_SYMBOL(__bswapdi2);
EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(memset);
EXPORT_SYMBOL(memmove);
next prev parent reply other threads:[~2013-05-13 7:20 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-10 21:18 [PATCH] powerpc: provide __bswapdi2 David Woodhouse
2013-05-13 6:48 ` Anton Blanchard
2013-05-13 7:20 ` Alan Modra
2013-05-13 10:27 ` David Woodhouse
2013-05-13 16:47 ` Segher Boessenkool
2013-05-13 7:09 ` Michael Neuling
2013-05-13 7:20 ` Michael Neuling [this message]
2013-05-13 7:33 ` Gabriel Paubert
2013-05-13 10:23 ` [PATCH v3] " Michael Neuling
2013-05-13 10:33 ` [PATCH] " David Woodhouse
2013-05-13 10:38 ` David Woodhouse
2013-05-13 10:51 ` Joakim Tjernlund
2013-05-13 11:12 ` Joakim Tjernlund
2013-05-13 13:12 ` Gabriel Paubert
2013-05-13 16:55 ` Segher Boessenkool
2013-05-14 1:09 ` Stephen Rothwell
2013-05-14 1:25 ` Michael Neuling
2013-05-14 6:59 ` David Woodhouse
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