1#
2# This file is subject to the terms and conditions of the GNU General Public
3# License.  See the file "COPYING" in the main directory of this archive
4# for more details.
5#
6# Copyright (C) 2000, 2001  Paolo Alberelli
7#
8# Makefile for the sh64-specific parts of the Linux memory manager.
9#
10# Note! Dependencies are done automagically by 'make dep', which also
11# removes any old dependencies. DON'T put your own dependencies here
12# unless it's something special (ie not a .c file).
13#
14
15O_TARGET := mm.o
16obj-y := init.o fault.o ioremap.o extable.o cache.o tlbmiss.o tlb.o
17
18# Special flags for tlbmiss.o.  This puts restrictions on the number of
19# caller-save registers that the compiler can target when building this file.
20# This is required because the code is called from a context in entry.S where
21# very few registers have been saved in the exception handler (for speed
22# reasons).
23# The caller save registers that have been saved and which can be used are
24# r2,r3,r4,r5 : argument passing
25# r15, r18 : SP and LINK
26# tr0-4 : allow all caller-save TR's.  The compiler seems to be able to make
27#         use of them, so it's probably beneficial to performance to save them
28#         and have them available for it.
29#
30# The resources not listed below are callee save, i.e. the compiler is free to
31# use any of them and will spill them to the stack itself.
32
33CFLAGS_tlbmiss.o += -ffixed-r7 \
34	-ffixed-r8 -ffixed-r9 -ffixed-r10 -ffixed-r11 -ffixed-r12 \
35	-ffixed-r13 -ffixed-r14 -ffixed-r16 -ffixed-r17 -ffixed-r19 \
36	-ffixed-r20 -ffixed-r21 -ffixed-r22 -ffixed-r23 \
37	-ffixed-r24 -ffixed-r25 -ffixed-r26 -ffixed-r27 \
38	-ffixed-r36 -ffixed-r37 -ffixed-r38 -ffixed-r39 -ffixed-r40 \
39	-ffixed-r41 -ffixed-r42 -ffixed-r43  \
40	-ffixed-r60 -ffixed-r61 -ffixed-r62
41
42
43include $(TOPDIR)/Rules.make
44