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efb80e7e09
Currently we're hacking libs-y to include libgcc.a, but this has unforeseen consequences since the userspace libgcc is linked with fpregs enabled. We need the kernel to stop using fpregs in an uncontrolled manner to implement lazy fpu state saves. Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
119 lines
3.6 KiB
Makefile
119 lines
3.6 KiB
Makefile
#
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# parisc/Makefile
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#
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# This file is included by the global makefile so that you can add your own
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# architecture-specific flags and dependencies. Remember to do have actions
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# for "archclean" and "archdep" for cleaning up and making dependencies for
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# this architecture
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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) 1994 by Linus Torvalds
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# Portions Copyright (C) 1999 The Puffin Group
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#
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# Modified for PA-RISC Linux by Paul Lahaie, Alex deVries,
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# Mike Shaver, Helge Deller and Martin K. Petersen
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#
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NM = sh $(srctree)/arch/parisc/nm
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CHECKFLAGS += -D__hppa__=1
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ifdef CONFIG_64BIT
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CROSS_COMPILE := $(shell if [ -x /usr/bin/hppa64-linux-gnu-gcc ]; then \
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echo hppa64-linux-gnu-; else echo hppa64-linux-; fi)
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UTS_MACHINE := parisc64
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CHECKFLAGS += -D__LP64__=1 -m64
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else
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MACHINE := $(subst 64,,$(shell uname -m))
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ifneq ($(MACHINE),parisc)
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CROSS_COMPILE := hppa-linux-
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endif
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endif
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FINAL_LD=$(CROSS_COMPILE)ld --warn-common --warn-section-align
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OBJCOPY_FLAGS =-O binary -R .note -R .comment -S
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ifneq ($(call cc-ifversion, -lt, 0303, "bad"),)
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$(error Sorry, GCC v3.3 or above is required.)
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endif
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cflags-y := -pipe
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# These flags should be implied by an hppa-linux configuration, but they
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# are not in gcc 3.2.
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cflags-y += -mno-space-regs -mfast-indirect-calls
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# Currently we save and restore fpregs on all kernel entry/interruption paths.
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# If that gets optimized, we might need to disable the use of fpregs in the
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# kernel.
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cflags-y += -mdisable-fpregs
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# Without this, "ld -r" results in .text sections that are too big
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# (> 0x40000) for branches to reach stubs.
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cflags-y += -ffunction-sections
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# select which processor to optimise for
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cflags-$(CONFIG_PA7100) += -march=1.1 -mschedule=7100
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cflags-$(CONFIG_PA7200) += -march=1.1 -mschedule=7200
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cflags-$(CONFIG_PA7100LC) += -march=1.1 -mschedule=7100LC
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cflags-$(CONFIG_PA7300LC) += -march=1.1 -mschedule=7300
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cflags-$(CONFIG_PA8X00) += -march=2.0 -mschedule=8000
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head-y := arch/parisc/kernel/head.o
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KBUILD_CFLAGS += $(cflags-y)
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kernel-y := mm/ kernel/ math-emu/ kernel/init_task.o
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kernel-$(CONFIG_HPUX) += hpux/
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core-y += $(addprefix arch/parisc/, $(kernel-y))
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libs-y += arch/parisc/lib/
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drivers-$(CONFIG_OPROFILE) += arch/parisc/oprofile/
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PALO := $(shell if which palo; then : ; \
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elif [ -x /sbin/palo ]; then echo /sbin/palo; \
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fi)
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palo: vmlinux
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@if [ -x $PALO ]; then \
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echo 'ERROR: Please install palo first (apt-get install palo)';\
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echo 'or build it from source and install it somewhere in your $$PATH';\
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false; \
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fi
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@if [ ! -f ./palo.conf ]; then \
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cp arch/parisc/defpalo.conf palo.conf; \
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echo 'A generic palo config file (./palo.conf) has been created for you.'; \
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echo 'You should check it and re-run "make palo".'; \
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echo 'WARNING: the "lifimage" file is now placed in this directory by default!'; \
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false; \
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fi
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$(PALO) -f ./palo.conf
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oldpalo: vmlinux
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export TOPDIR=`pwd`; \
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unset STRIP LDFLAGS CPP CPPFLAGS AFLAGS CFLAGS CC LD; cd ../palo && make lifimage
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# Shorthands for known targets not supported by parisc, use palo as default
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Image zImage bzImage: palo
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kernel_install: vmlinux
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sh $(src)/arch/parisc/install.sh \
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$(KERNELRELEASE) $< System.map "$(INSTALL_PATH)"
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install: kernel_install modules_install
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CLEAN_FILES += lifimage
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MRPROPER_FILES += palo.conf
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define archhelp
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@echo '* vmlinux - Uncompressed kernel image (./vmlinux)'
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@echo ' palo - Bootable image (./lifimage)'
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@echo ' install - Install kernel using'
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@echo ' (your) ~/bin/installkernel or'
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@echo ' (distribution) /sbin/installkernel or'
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@echo ' copy to $$(INSTALL_PATH)'
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endef
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