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 14 15AFLAGS_head.o += -mtext-section-literals 16 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 28sed-y = -e 's/\*(\(\.[a-z]*it\|\.ref\|\)\.text)/*(\1.literal \1.text)/g' \ 29 -e 's/\.text\.unlikely/.literal.unlikely .text.unlikely/g' \ 30 -e 's/\*(\(\.text\.[a-z]*\))/*(\1.literal \1)/g' 31 32quiet_cmd__cpp_lds_S = LDS $@ 33cmd__cpp_lds_S = $(CPP) $(cpp_flags) -P -C -Uxtensa -D__ASSEMBLY__ $< \ 34 | sed $(sed-y) >$@ 35 36$(obj)/vmlinux.lds: $(src)/vmlinux.lds.S FORCE 37 $(call if_changed_dep,_cpp_lds_S) 38