1# 2# Makefile for the Linux/Xtensa kernel. 3# 4 5extra-y := head.o vmlinux.lds 6 7obj-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 10 11obj-$(CONFIG_KGDB) += xtensa-stub.o 12obj-$(CONFIG_PCI) += pci.o 13obj-$(CONFIG_MODULES) += xtensa_ksyms.o module.o 14obj-$(CONFIG_FUNCTION_TRACER) += mcount.o 15obj-$(CONFIG_SMP) += smp.o mxhead.o 16 17AFLAGS_head.o += -mtext-section-literals 18 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 30sed-y = -e 's/\*(\(\.[a-z]*it\|\.ref\|\)\.text)/*(\1.literal \1.text)/g' \ 31 -e 's/\.text\.unlikely/.literal.unlikely .text.unlikely/g' \ 32 -e 's/\*(\(\.text .*\))/*(.literal \1)/g' \ 33 -e 's/\*(\(\.text\.[a-z]*\))/*(\1.literal \1)/g' 34 35quiet_cmd__cpp_lds_S = LDS $@ 36cmd__cpp_lds_S = $(CPP) $(cpp_flags) -P -C -Uxtensa -D__ASSEMBLY__ $< \ 37 | sed $(sed-y) >$@ 38 39$(obj)/vmlinux.lds: $(src)/vmlinux.lds.S FORCE 40 $(call if_changed_dep,_cpp_lds_S) 41