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authorLinus Torvalds <torvalds@linux-foundation.org>2008-12-28 19:54:33 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2008-12-28 19:54:33 -0500
commit3c92ec8ae91ecf59d88c798301833d7cf83f2179 (patch)
tree08a38cd3523c42bd49882f17cd501fd879e7ca1c /arch/powerpc/lib/memcpy_64.S
parentc4c9f0183b7c4e97836e8fecbb67898b06c47e78 (diff)
parentca9153a3a2a7556d091dfe080e42b0e67881fff6 (diff)
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (144 commits) powerpc/44x: Support 16K/64K base page sizes on 44x powerpc: Force memory size to be a multiple of PAGE_SIZE powerpc/32: Wire up the trampoline code for kdump powerpc/32: Add the ability for a classic ppc kernel to be loaded at 32M powerpc/32: Allow __ioremap on RAM addresses for kdump kernel powerpc/32: Setup OF properties for kdump powerpc/32/kdump: Implement crash_setup_regs() using ppc_save_regs() powerpc: Prepare xmon_save_regs for use with kdump powerpc: Remove default kexec/crash_kernel ops assignments powerpc: Make default kexec/crash_kernel ops implicit powerpc: Setup OF properties for ppc32 kexec powerpc/pseries: Fix cpu hotplug powerpc: Fix KVM build on ppc440 powerpc/cell: add QPACE as a separate Cell platform powerpc/cell: fix build breakage with CONFIG_SPUFS disabled powerpc/mpc5200: fix error paths in PSC UART probe function powerpc/mpc5200: add rts/cts handling in PSC UART driver powerpc/mpc5200: Make PSC UART driver update serial errors counters powerpc/mpc5200: Remove obsolete code from mpc5200 MDIO driver powerpc/mpc5200: Add MDMA/UDMA support to MPC5200 ATA driver ... Fix trivial conflict in drivers/char/Makefile as per Paul's directions
Diffstat (limited to 'arch/powerpc/lib/memcpy_64.S')
-rw-r--r--arch/powerpc/lib/memcpy_64.S16
1 files changed, 14 insertions, 2 deletions
diff --git a/arch/powerpc/lib/memcpy_64.S b/arch/powerpc/lib/memcpy_64.S
index 3f131129d1c1..fe2d34e5332d 100644
--- a/arch/powerpc/lib/memcpy_64.S
+++ b/arch/powerpc/lib/memcpy_64.S
@@ -18,11 +18,23 @@ _GLOBAL(memcpy)
18 andi. r6,r6,7 18 andi. r6,r6,7
19 dcbt 0,r4 19 dcbt 0,r4
20 blt cr1,.Lshort_copy 20 blt cr1,.Lshort_copy
21/* Below we want to nop out the bne if we're on a CPU that has the
22 CPU_FTR_UNALIGNED_LD_STD bit set and the CPU_FTR_CP_USE_DCBTZ bit
23 cleared.
24 At the time of writing the only CPU that has this combination of bits
25 set is Power6. */
26BEGIN_FTR_SECTION
27 nop
28FTR_SECTION_ELSE
21 bne .Ldst_unaligned 29 bne .Ldst_unaligned
30ALT_FTR_SECTION_END(CPU_FTR_UNALIGNED_LD_STD | CPU_FTR_CP_USE_DCBTZ, \
31 CPU_FTR_UNALIGNED_LD_STD)
22.Ldst_aligned: 32.Ldst_aligned:
23 andi. r0,r4,7
24 addi r3,r3,-16 33 addi r3,r3,-16
34BEGIN_FTR_SECTION
35 andi. r0,r4,7
25 bne .Lsrc_unaligned 36 bne .Lsrc_unaligned
37END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD)
26 srdi r7,r5,4 38 srdi r7,r5,4
27 ld r9,0(r4) 39 ld r9,0(r4)
28 addi r4,r4,-8 40 addi r4,r4,-8
@@ -131,7 +143,7 @@ _GLOBAL(memcpy)
131 PPC_MTOCRF 0x01,r6 # put #bytes to 8B bdry into cr7 143 PPC_MTOCRF 0x01,r6 # put #bytes to 8B bdry into cr7
132 subf r5,r6,r5 144 subf r5,r6,r5
133 li r7,0 145 li r7,0
134 cmpldi r1,r5,16 146 cmpldi cr1,r5,16
135 bf cr7*4+3,1f 147 bf cr7*4+3,1f
136 lbz r0,0(r4) 148 lbz r0,0(r4)
137 stb r0,0(r3) 149 stb r0,0(r3)