2 # Makefile for the Linux/Xtensa kernel.
5 extra-y := head.o vmlinux.lds
7 obj-y := align.o entry.o irq.o coprocessor.o process.o ptrace.o \
8 setup.o signal.o syscall.o time.o traps.o vectors.o platform.o \
9 pci-dma.o init_task.o io.o
11 obj-$(CONFIG_KGDB) += xtensa-stub.o
12 obj-$(CONFIG_PCI) += pci.o
13 obj-$(CONFIG_MODULES) += xtensa_ksyms.o module.o
15 # In the Xtensa architecture, assembly generates literals which must always
16 # precede the L32R instruction with a relative offset less than 256 kB.
17 # Therefore, the .text and .literal section must be combined in parenthesis
18 # in the linker script, such as: *(.literal .text).
20 # We need to post-process the generated vmlinux.lds scripts to convert
21 # *(xxx.text) to *(xxx.literal xxx.text) for the following text sections:
22 # .text .ref.text .*init.text .*exit.text .text.*
24 # Replicate rules in scripts/Makefile.build
26 sed-y = -e 's/(\(\.[a-z]*it\|\.ref\|\)\.text)/(\1.literal \1.text)/g' \
27 -e 's/(\(\.text\.[a-z]*\))/(\1.literal \1)/g'
29 quiet_cmd__cpp_lds_S = LDS $@
30 cmd__cpp_lds_S = $(CPP) $(cpp_flags) -D__ASSEMBLY__ $< | sed $(sed-y) >$@
32 $(obj)/vmlinux.lds: $(src)/vmlinux.lds.S FORCE
33 $(call if_changed_dep,_cpp_lds_S)