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sparc32: Kill btfixup for xchg()'s 'swap' instruction.

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We always have this instruction available, so no need to use
btfixup for it any more.

This also eradicates the whole of atomic_32.S and thus the
__atomic_begin and __atomic_end symbols completely.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2012-05-13 13:07:16 -07:00
parent 0f031b3f26
commit 73c1377da9
6 changed files with 2 additions and 61 deletions
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2
arch/sparc/lib/Makefile
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@@ -13,7 +13,7 @@ lib-y += memscan_$(BITS).o memcmp.o strncmp_$(BITS).o
lib-y += strncpy_from_user_$(BITS).o strlen_user_$(BITS).o
lib-$(CONFIG_SPARC32) += divdi3.o udivdi3.o
lib-$(CONFIG_SPARC32) += copy_user.o locks.o
lib-y += atomic_$(BITS).o
lib-$(CONFIG_SPARC64) += atomic_64.o
lib-$(CONFIG_SPARC32) += lshrdi3.o ashldi3.o
lib-$(CONFIG_SPARC32) += muldi3.o bitext.o cmpdi2.o

24
arch/sparc/lib/atomic_32.S
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@@ -1,24 +0,0 @@
/* atomic.S: Move this stuff here for better ICACHE hit rates.
*
* Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu)
*/
#include <asm/ptrace.h>
#include <asm/psr.h>
.text
.align 4
.globl __atomic_begin
__atomic_begin:
#ifndef CONFIG_SMP
.globl ___xchg32_sun4md
___xchg32_sun4md:
swap [%g1], %g2
jmpl %o7 + 8, %g0
mov %g4, %o7
#endif
.globl __atomic_end
__atomic_end: