# SPDX-License-Identifier: GPL-2.0 # # 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-$([31mCONFIG_PCI[0m) += pci.o obj-$([31mCONFIG_MODULES[0m) += xtensa_ksyms.o module.o obj-$([31mCONFIG_FUNCTION_TRACER[0m) += mcount.o obj-$([31mCONFIG_SMP[0m) += smp.o mxhead.o obj-$([31mCONFIG_XTENSA_VARIANT_HAVE_PERF_EVENTS[0m) += perf_event.o obj-$([31mCONFIG_HAVE_HW_BREAKPOINT[0m) += hw_breakpoint.o obj-$([31mCONFIG_S32C1I_SELFTEST[0m) += s32c1i_selftest.o obj-$([31mCONFIG_JUMP_LABEL[0m) += jump_label.o # 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 ':a; s/\*(\([^)]*\)\.text\.unlikely/*(\1.literal.unlikely .{text}.unlikely/; ta; ' \ -e ':b; s/\*(\([^)]*\)\.text\(\.[a-z]*\)/*(\1.{text}\2.literal .{text}\2/; tb; ' \ -e ':c; s/\*(\([^)]*\)\(\.[a-z]*it\|\.ref\)\.text/*(\1\2.literal \2.{text}/; tc; ' \ -e ':d; s/\*(\([^)]\+ \|\)\.text/*(\1.literal .{text}/; td; ' \ -e 's/\.{text}/.text/g' quiet_cmd__cpp_lds_S = LDS $@ cmd__cpp_lds_S = $(CPP) $(cpp_flags) -P -C -Uxtensa -D__ASSEMBLY__ \ -DLINKER_SCRIPT $< | sed $(sed-y) >$@ $(obj)/vmlinux.lds: $(src)/vmlinux.lds.S FORCE $(call if_changed_dep,_cpp_lds_S) |