15a0015d6SChris Zankel# 25a0015d6SChris Zankel# Makefile for the Linux/Xtensa kernel. 35a0015d6SChris Zankel# 45a0015d6SChris Zankel 55a0015d6SChris Zankelextra-y := head.o vmlinux.lds 65a0015d6SChris Zankel 764ac24e7SMatthew Wilcoxobj-y := align.o entry.o irq.o coprocessor.o process.o ptrace.o \ 81c0350bdSChris Zankel setup.o signal.o syscall.o time.o traps.o vectors.o platform.o \ 9d38efc1fSMax Filippov pci-dma.o 105a0015d6SChris Zankel 115a0015d6SChris Zankelobj-$(CONFIG_KGDB) += xtensa-stub.o 125a0015d6SChris Zankelobj-$(CONFIG_PCI) += pci.o 135a0015d6SChris Zankelobj-$(CONFIG_MODULES) += xtensa_ksyms.o module.o 145a0015d6SChris Zankel 15*e85e335fSMax FilippovAFLAGS_head.o += -mtext-section-literals 16*e85e335fSMax Filippov 1778f3cdfaSChris Zankel# In the Xtensa architecture, assembly generates literals which must always 1878f3cdfaSChris Zankel# precede the L32R instruction with a relative offset less than 256 kB. 1978f3cdfaSChris Zankel# Therefore, the .text and .literal section must be combined in parenthesis 2078f3cdfaSChris Zankel# in the linker script, such as: *(.literal .text). 2178f3cdfaSChris Zankel# 2278f3cdfaSChris Zankel# We need to post-process the generated vmlinux.lds scripts to convert 2378f3cdfaSChris Zankel# *(xxx.text) to *(xxx.literal xxx.text) for the following text sections: 2478f3cdfaSChris Zankel# .text .ref.text .*init.text .*exit.text .text.* 2578f3cdfaSChris Zankel# 2678f3cdfaSChris Zankel# Replicate rules in scripts/Makefile.build 275a0015d6SChris Zankel 28ed5010eaSChris Zankelsed-y = -e 's/\*(\(\.[a-z]*it\|\.ref\|\)\.text)/*(\1.literal \1.text)/g' \ 29f6a03a12SMax Filippov -e 's/\.text\.unlikely/.literal.unlikely .text.unlikely/g' \ 30ed5010eaSChris Zankel -e 's/\*(\(\.text\.[a-z]*\))/*(\1.literal \1)/g' 3178f3cdfaSChris Zankel 3278f3cdfaSChris Zankelquiet_cmd__cpp_lds_S = LDS $@ 3351b563fcSSam Ravnborgcmd__cpp_lds_S = $(CPP) $(cpp_flags) -P -C -Uxtensa -D__ASSEMBLY__ $< \ 3451b563fcSSam Ravnborg | sed $(sed-y) >$@ 3578f3cdfaSChris Zankel 3678f3cdfaSChris Zankel$(obj)/vmlinux.lds: $(src)/vmlinux.lds.S FORCE 3778f3cdfaSChris Zankel $(call if_changed_dep,_cpp_lds_S) 38