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45 lines
1.8 KiB
45 lines
1.8 KiB
20 years ago
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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# Copyright (C) 2000, 2001 Paolo Alberelli
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# Copyright (C) 2003, 2004 Paul Mundt
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#
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# Makefile for the sh64-specific parts of the Linux memory manager.
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#
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# Note! Dependencies are done automagically by 'make dep', which also
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# removes any old dependencies. DON'T put your own dependencies here
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# unless it's something special (ie not a .c file).
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#
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obj-y := init.o fault.o ioremap.o extable.o cache.o tlbmiss.o tlb.o
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obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
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# Special flags for tlbmiss.o. This puts restrictions on the number of
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# caller-save registers that the compiler can target when building this file.
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# This is required because the code is called from a context in entry.S where
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# very few registers have been saved in the exception handler (for speed
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# reasons).
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# The caller save registers that have been saved and which can be used are
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# r2,r3,r4,r5 : argument passing
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# r15, r18 : SP and LINK
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# tr0-4 : allow all caller-save TR's. The compiler seems to be able to make
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# use of them, so it's probably beneficial to performance to save them
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# and have them available for it.
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#
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# The resources not listed below are callee save, i.e. the compiler is free to
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# use any of them and will spill them to the stack itself.
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CFLAGS_tlbmiss.o += -ffixed-r7 \
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-ffixed-r8 -ffixed-r9 -ffixed-r10 -ffixed-r11 -ffixed-r12 \
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-ffixed-r13 -ffixed-r14 -ffixed-r16 -ffixed-r17 -ffixed-r19 \
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-ffixed-r20 -ffixed-r21 -ffixed-r22 -ffixed-r23 \
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-ffixed-r24 -ffixed-r25 -ffixed-r26 -ffixed-r27 \
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-ffixed-r36 -ffixed-r37 -ffixed-r38 -ffixed-r39 -ffixed-r40 \
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-ffixed-r41 -ffixed-r42 -ffixed-r43 \
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-ffixed-r60 -ffixed-r61 -ffixed-r62 \
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-fomit-frame-pointer
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