[mirror_ubuntu-artful-kernel.git] / arch / xtensa / kernel / Makefile

#
# Makefile for the Linux/Xtensa kernel.
#

extra-y := head.o vmlinux.lds

obj-y := align.o entry.o irq.o coprocessor.o process.o ptrace.o \
	 setup.o signal.o syscall.o time.o traps.o vectors.o platform.o  \
	 pci-dma.o

obj-$(CONFIG_KGDB) += xtensa-stub.o
obj-$(CONFIG_PCI) += pci.o
obj-$(CONFIG_MODULES) += xtensa_ksyms.o module.o

AFLAGS_head.o += -mtext-section-literals

# In the Xtensa architecture, assembly generates literals which must always
# precede the L32R instruction with a relative offset less than 256 kB.
# Therefore, the .text and .literal section must be combined in parenthesis
# in the linker script, such as: *(.literal .text).
#
# We need to post-process the generated vmlinux.lds scripts to convert
# *(xxx.text) to  *(xxx.literal xxx.text) for the following text sections:
#   .text .ref.text .*init.text .*exit.text .text.*
#
# Replicate rules in scripts/Makefile.build

sed-y = -e 's/\*(\(\.[a-z]*it\|\.ref\|\)\.text)/*(\1.literal \1.text)/g' \
	-e 's/\.text\.unlikely/.literal.unlikely .text.unlikely/g'	 \
	-e 's/\*(\(\.text\.[a-z]*\))/*(\1.literal \1)/g'

quiet_cmd__cpp_lds_S = LDS     $@
cmd__cpp_lds_S = $(CPP) $(cpp_flags) -P -C -Uxtensa -D__ASSEMBLY__ $<    \
                 | sed $(sed-y) >$@

$(obj)/vmlinux.lds: $(src)/vmlinux.lds.S FORCE
	$(call if_changed_dep,_cpp_lds_S)
Commit	Line	Data
5a0015d6 CZ	1	#
	2	# Makefile for the Linux/Xtensa kernel.
	3	#
	4
	5	extra-y := head.o vmlinux.lds
	6
64ac24e7	7	obj-y := align.o entry.o irq.o coprocessor.o process.o ptrace.o \
1c0350bd	8	setup.o signal.o syscall.o time.o traps.o vectors.o platform.o \
d38efc1f	9	pci-dma.o
5a0015d6	10
5a0015d6 CZ	11	obj-$(CONFIG_KGDB) += xtensa-stub.o
	12	obj-$(CONFIG_PCI) += pci.o
	13	obj-$(CONFIG_MODULES) += xtensa_ksyms.o module.o
	14
e85e335f MF	15	AFLAGS_head.o += -mtext-section-literals
e85e335f MF	16
78f3cdfa CZ	17	# In the Xtensa architecture, assembly generates literals which must always
	18	# precede the L32R instruction with a relative offset less than 256 kB.
	19	# Therefore, the .text and .literal section must be combined in parenthesis
	20	# in the linker script, such as: *(.literal .text).
	21	#
	22	# We need to post-process the generated vmlinux.lds scripts to convert
	23	# (xxx.text) to (xxx.literal xxx.text) for the following text sections:
	24	# .text .ref.text .init.text .exit.text .text.*
	25	#
	26	# Replicate rules in scripts/Makefile.build
	27
c4c4594b CZ	28	sed-y = -e 's/\(\(\.[a-z]it\\|\.ref\\|\)\.text)/*(\1.literal \1.text)/g' \
c4c4594b CZ	29	-e 's/\.text\.unlikely/.literal.unlikely .text.unlikely/g' \
ed5010ea	30	-e 's/\(\(\.text\.[a-z]\))/*(\1.literal \1)/g'
78f3cdfa CZ	31
78f3cdfa CZ	32	quiet_cmd__cpp_lds_S = LDS $@
c4c4594b CZ	33	cmd__cpp_lds_S = $(CPP) $(cpp_flags) -P -C -Uxtensa -D__ASSEMBLY__ $< \
c4c4594b CZ	34	\| sed $(sed-y) >$@
5a0015d6	35
78f3cdfa CZ	36	$(obj)/vmlinux.lds: $(src)/vmlinux.lds.S FORCE
78f3cdfa CZ	37	$(call if_changed_dep,_cpp_lds_S)