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44 lines
1.7 KiB
44 lines
1.7 KiB
# SPDX-License-Identifier: GPL-2.0 |
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# |
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# Makefile for the Linux/Xtensa kernel. |
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# |
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extra-y := head.o vmlinux.lds |
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obj-y := align.o coprocessor.o entry.o irq.o platform.o process.o \ |
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ptrace.o setup.o signal.o stacktrace.o syscall.o time.o traps.o \ |
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vectors.o |
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obj-$(CONFIG_MMU) += pci-dma.o |
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obj-$(CONFIG_PCI) += pci.o |
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obj-$(CONFIG_MODULES) += xtensa_ksyms.o module.o |
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obj-$(CONFIG_FUNCTION_TRACER) += mcount.o |
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obj-$(CONFIG_SMP) += smp.o mxhead.o |
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obj-$(CONFIG_XTENSA_VARIANT_HAVE_PERF_EVENTS) += perf_event.o |
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obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o |
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obj-$(CONFIG_S32C1I_SELFTEST) += s32c1i_selftest.o |
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obj-$(CONFIG_JUMP_LABEL) += jump_label.o |
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# In the Xtensa architecture, assembly generates literals which must always |
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# precede the L32R instruction with a relative offset less than 256 kB. |
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# Therefore, the .text and .literal section must be combined in parenthesis |
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# in the linker script, such as: *(.literal .text). |
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# |
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# We need to post-process the generated vmlinux.lds scripts to convert |
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# *(xxx.text) to *(xxx.literal xxx.text) for the following text sections: |
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# .text .ref.text .*init.text .*exit.text .text.* |
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# |
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# Replicate rules in scripts/Makefile.build |
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sed-y = -e ':a; s/\*(\([^)]*\)\.text\.unlikely/*(\1.literal.unlikely .{text}.unlikely/; ta; ' \ |
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-e ':b; s/\*(\([^)]*\)\.text\(\.[a-z]*\)/*(\1.{text}\2.literal .{text}\2/; tb; ' \ |
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-e ':c; s/\*(\([^)]*\)\(\.[a-z]*it\|\.ref\)\.text/*(\1\2.literal \2.{text}/; tc; ' \ |
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-e ':d; s/\*(\([^)]\+ \|\)\.text/*(\1.literal .{text}/; td; ' \ |
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-e 's/\.{text}/.text/g' |
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quiet_cmd__cpp_lds_S = LDS $@ |
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cmd__cpp_lds_S = $(CPP) $(cpp_flags) -P -C -Uxtensa -D__ASSEMBLY__ \ |
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-DLINKER_SCRIPT $< | sed $(sed-y) >$@ |
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$(obj)/vmlinux.lds: $(src)/vmlinux.lds.S FORCE |
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$(call if_changed_dep,_cpp_lds_S)
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