[deliverable/linux.git] / arch / xtensa / kernel / Makefile

#
# Makefile for the Linux/Xtensa kernel.
#

extra-y := head.o vmlinux.lds

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

obj-$(CONFIG_KGDB) += xtensa-stub.o
obj-$(CONFIG_PCI) += pci.o
obj-$(CONFIG_MODULES) += xtensa_ksyms.o module.o
obj-$(CONFIG_FUNCTION_TRACER) += mcount.o
obj-$(CONFIG_SMP) += smp.o mxhead.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
	$(call if_changed_dep,_cpp_lds_S)
Commit	Line	Data
5a0015d6 CZ	1	#
	2	# Makefile for the Linux/Xtensa kernel.
	3	#
	4
	5	extra-y := head.o vmlinux.lds
	6
3e4196a5 MF	7	obj-y := align.o coprocessor.o entry.o irq.o pci-dma.o platform.o process.o \
	8	ptrace.o setup.o signal.o stacktrace.o syscall.o time.o traps.o \
	9	vectors.o
5a0015d6	10
5a0015d6 CZ	11	obj-$(CONFIG_KGDB) += xtensa-stub.o
	12	obj-$(CONFIG_PCI) += pci.o
	13	obj-$(CONFIG_MODULES) += xtensa_ksyms.o module.o
478ba61a	14	obj-$(CONFIG_FUNCTION_TRACER) += mcount.o
f615136c	15	obj-$(CONFIG_SMP) += smp.o mxhead.o
5a0015d6	16
e85e335f MF	17	AFLAGS_head.o += -mtext-section-literals
e85e335f MF	18
78f3cdfa CZ	19	# In the Xtensa architecture, assembly generates literals which must always
	20	# precede the L32R instruction with a relative offset less than 256 kB.
	21	# Therefore, the .text and .literal section must be combined in parenthesis
	22	# in the linker script, such as: *(.literal .text).
	23	#
	24	# We need to post-process the generated vmlinux.lds scripts to convert
	25	# (xxx.text) to (xxx.literal xxx.text) for the following text sections:
	26	# .text .ref.text .init.text .exit.text .text.*
	27	#
	28	# Replicate rules in scripts/Makefile.build
	29
c4c4594b CZ	30	sed-y = -e 's/\(\(\.[a-z]it\\|\.ref\\|\)\.text)/*(\1.literal \1.text)/g' \
c4c4594b CZ	31	-e 's/\.text\.unlikely/.literal.unlikely .text.unlikely/g' \
ed5010ea	32	-e 's/\(\(\.text\.[a-z]\))/*(\1.literal \1)/g'
78f3cdfa CZ	33
78f3cdfa CZ	34	quiet_cmd__cpp_lds_S = LDS $@
c4c4594b CZ	35	cmd__cpp_lds_S = $(CPP) $(cpp_flags) -P -C -Uxtensa -D__ASSEMBLY__ $< \
c4c4594b CZ	36	\| sed $(sed-y) >$@
5a0015d6	37
78f3cdfa CZ	38	$(obj)/vmlinux.lds: $(src)/vmlinux.lds.S FORCE
78f3cdfa CZ	39	$(call if_changed_dep,_cpp_lds_S)