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