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linux/arch/m68k/lib/Makefile

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m68k: merge mmu and non-mmu versions of lib/Makefile We can easily support the slight differences in libs needed by the mmu and non-mmu builds in a single Makefile, so merge them back into a single file again. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-03-28 13:58:49 +08:00
#
# Makefile for m68k-specific library files..
#
m68k: remove duplicate memset() implementation Merging the mmu and non-mmu directories we ended up with duplicate implementations of memset(). One is a little more optimized for the >= 68020 case, but that can easily be inserted into a single implementation of memset(). Clean up the exporting of this symbol too, otherwise we end up exporting it twice on a no-mmu build. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-03-28 14:48:00 +08:00
lib-y := ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \
m68k: let Makefile sort out compiling mmu and non-mmu lib/checksum.c We don't need an arch/m68k/lib/checksum.c wrapper to include the correct mmu or non-mmu version of the checksum code. Let the Makefile just build the appropriate one. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-04-18 13:27:55 +08:00
memcpy.o memset.o memmove.o
m68k: merge mmu and non-mmu versions of lib/Makefile We can easily support the slight differences in libs needed by the mmu and non-mmu builds in a single Makefile, so merge them back into a single file again. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-03-28 13:58:49 +08:00
m68k: handle presence of 64bit mul/div instructions cleanly The traditional 68000 processors and the newer reduced instruction set ColdFire processors do not support the 32*32->64 multiply or the 64/32->32 divide instructions. This is not a difference based on the presence of a hardware MMU or not. Create a new config symbol to mark that a CPU type doesn't support the longer multiply/divide instructions. Use this then as a basis for using the fast 64bit based divide (in div64.h) and for linking in the extra libgcc functions that may be required (mulsi3, divsi3, etc). Signed-off-by: Greg Ungerer <gerg@uclinux.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-11-11 13:13:08 +08:00
lib-$(CONFIG_MMU) += string.o uaccess.o
lib-$(CONFIG_CPU_HAS_NO_MULDIV64) += mulsi3.o divsi3.o udivsi3.o
lib-$(CONFIG_CPU_HAS_NO_MULDIV64) += modsi3.o umodsi3.o
m68k: simpler m68k and ColdFire CPU's can use generic csum code We have two implementations of the IP checksuming code for the m68k arch. One uses the more advanced instructions available in 68020 and above processors, the other uses the simpler instructions available on the original 68000 processors and the modern ColdFire processors. This simpler code is pretty much the same as the generic lib implementation of the IP csum functions. So lets just switch over to using that. That means we can completely remove the checksum_no.c file, and only have the local fast code used for the more complex 68k CPU family members. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-10-18 13:49:19 +08:00
ifndef CONFIG_GENERIC_CSUM
lib-y += checksum.o
m68k: merge m68k and m68knommu arch directories There is a lot of common code that could be shared between the m68k and m68knommu arch branches. It makes sense to merge the two branches into a single directory structure so that we can more easily share that common code. This is a brute force merge, based on a script from Stephen King <sfking@fdwdc.com>, which was originally written by Arnd Bergmann <arnd@arndb.de>. > The script was inspired by the script Sam Ravnborg used to merge the > includes from m68knommu. For those files common to both arches but > differing in content, the m68k version of the file is renamed to > <file>_mm.<ext> and the m68knommu version of the file is moved into the > corresponding m68k directory and renamed <file>_no.<ext> and a small > wrapper file <file>.<ext> is used to select between the two version. Files > that are common to both but don't differ are removed from the m68knommu > tree and files and directories that are unique to the m68knommu tree are > moved to the m68k tree. Finally, the arch/m68knommu tree is removed. > > To select between the the versions of the files, the wrapper uses > > #ifdef CONFIG_MMU > #include <file>_mm.<ext> > #else > #include <file>_no.<ext> > #endif On top of this file merge I have done a simplistic merge of m68k and m68knommu Kconfig, which primarily attempts to keep existing options and menus in place. Other than a handful of options being moved it produces identical .config outputs on m68k and m68knommu targets I tested it on. With this in place there is now quite a bit of scope for merge cleanups in future patches. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-03-22 11:39:27 +08:00
endif
m68k: merge mmu and non-mmu versions of lib/Makefile We can easily support the slight differences in libs needed by the mmu and non-mmu builds in a single Makefile, so merge them back into a single file again. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-03-28 13:58:49 +08:00