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powerpc: Provide __bswapdi2

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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>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
David Woodhouse 2013-05-13 00:23:38 +00:00 committed by Benjamin Herrenschmidt
parent b2b48584df
commit ca9d7aea59
3 changed files with 24 additions and 1 deletions
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11
arch/powerpc/kernel/misc_32.S
View File

@ -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 r3,r9
mr r4,r10
blr
_GLOBAL(abs)
srawi r4,r3,31
xor r3,r3,r4

11
arch/powerpc/kernel/misc_64.S
View File

@ -234,6 +234,17 @@ _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 r3,r7,r9
blr
#if defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE)
/*

3
arch/powerpc/kernel/ppc_ksyms.c
View File

@ -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);