2005-09-26 14:04:21 +08:00
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#
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# Makefile for ppc-specific library files..
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#
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2009-06-10 04:48:51 +08:00
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subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
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2012-11-27 01:41:08 +08:00
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ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC)
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2006-06-10 18:23:54 +08:00
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2016-03-03 12:26:58 +08:00
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CFLAGS_REMOVE_code-patching.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_feature-fixups.o = $(CC_FLAGS_FTRACE)
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2008-11-27 04:54:46 +08:00
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2017-05-11 23:56:49 +08:00
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obj-y += string.o alloc.o code-patching.o feature-fixups.o
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2017-05-11 23:56:52 +08:00
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obj-$(CONFIG_PPC32) += div64.o copy_32.o crtsavres.o
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2014-12-22 12:14:24 +08:00
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2017-05-11 23:56:52 +08:00
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# See corresponding test in arch/powerpc/Makefile
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# 64-bit linker creates .sfpr on demand for final link (vmlinux),
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# so it is only needed for modules, and only for older linkers which
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# do not support --save-restore-funcs
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ifeq ($(call ld-ifversion, -lt, 225000000, y),y)
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extra-$(CONFIG_PPC64) += crtsavres.o
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endif
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2005-10-10 20:50:37 +08:00
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2017-03-22 04:35:08 +08:00
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obj64-y += copypage_64.o copyuser_64.o mem_64.o hweight_64.o \
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2014-12-22 12:18:43 +08:00
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copyuser_power7.o string_64.o copypage_power7.o memcpy_power7.o \
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memcpy_64.o memcmp_64.o
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obj64-$(CONFIG_SMP) += locks.o
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obj64-$(CONFIG_ALTIVEC) += vmx-helper.o
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2017-02-14 17:16:43 +08:00
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obj64-$(CONFIG_KPROBES_SANITY_TEST) += test_emulate_step.o
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2014-12-22 12:18:43 +08:00
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2016-08-11 14:03:14 +08:00
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obj-y += checksum_$(BITS).o checksum_wrappers.o
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2013-09-23 10:04:51 +08:00
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2017-08-30 12:12:40 +08:00
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obj-y += sstep.o ldstfp.o quad.o
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obj64-y += quad.o
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2005-10-28 20:53:37 +08:00
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2007-09-16 18:53:25 +08:00
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obj-$(CONFIG_PPC_LIB_RHEAP) += rheap.o
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2008-06-24 09:32:21 +08:00
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2008-06-24 09:33:03 +08:00
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obj-$(CONFIG_FTR_FIXUP_SELFTEST) += feature-fixups-test.o
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2013-10-14 18:03:58 +08:00
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powerpc/lib/xor_vmx: Ensure no altivec code executes before enable_kernel_altivec()
The xor_vmx.c file is used for the RAID5 xor operations. In these functions
altivec is enabled to run the operation and then disabled.
The code uses enable_kernel_altivec() around the core of the algorithm, however
the whole file is built with -maltivec, so the compiler is within its rights to
generate altivec code anywhere. This has been seen at least once in the wild:
0:mon> di $xor_altivec_2
c0000000000b97d0 3c4c01d9 addis r2,r12,473
c0000000000b97d4 3842db30 addi r2,r2,-9424
c0000000000b97d8 7c0802a6 mflr r0
c0000000000b97dc f8010010 std r0,16(r1)
c0000000000b97e0 60000000 nop
c0000000000b97e4 7c0802a6 mflr r0
c0000000000b97e8 faa1ffa8 std r21,-88(r1)
...
c0000000000b981c f821ff41 stdu r1,-192(r1)
c0000000000b9820 7f8101ce stvx v28,r1,r0 <-- POP
c0000000000b9824 38000030 li r0,48
c0000000000b9828 7fa101ce stvx v29,r1,r0
...
c0000000000b984c 4bf6a06d bl c0000000000238b8 # enable_kernel_altivec
This patch splits the non-altivec code into xor_vmx_glue.c which calls the
altivec functions in xor_vmx.c. By compiling xor_vmx_glue.c without
-maltivec we can guarantee that altivec instruction will not be executed
outside of the enable/disable block.
Signed-off-by: Matt Brown <matthew.brown.dev@gmail.com>
[mpe: Rework change log and include disassembly]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-05-24 07:45:59 +08:00
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obj-$(CONFIG_ALTIVEC) += xor_vmx.o xor_vmx_glue.o
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2015-05-26 06:53:26 +08:00
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CFLAGS_xor_vmx.o += -maltivec $(call cc-option,-mabi=altivec)
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2014-12-22 12:18:43 +08:00
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obj-$(CONFIG_PPC64) += $(obj64-y)
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