1 # SPDX-License-Identifier: GPL-2.0
3 # Makefile for the Linux/Xtensa kernel.
6 extra-y
:= head.o vmlinux.lds
8 obj-y
:= align.o coprocessor.o entry.o irq.o pci-dma.o platform.o process.o \
9 ptrace.o setup.o signal.o stacktrace.o syscall.o time.o traps.o \
12 obj-
$(CONFIG_PCI
) += pci.o
13 obj-
$(CONFIG_MODULES
) += xtensa_ksyms.o module.o
14 obj-
$(CONFIG_FUNCTION_TRACER
) += mcount.o
15 obj-
$(CONFIG_SMP
) += smp.o mxhead.o
16 obj-
$(CONFIG_XTENSA_VARIANT_HAVE_PERF_EVENTS
) += perf_event.o
17 obj-
$(CONFIG_HAVE_HW_BREAKPOINT
) += hw_breakpoint.o
18 obj-
$(CONFIG_S32C1I_SELFTEST
) += s32c1i_selftest.o
20 # In the Xtensa architecture, assembly generates literals which must always
21 # precede the L32R instruction with a relative offset less than 256 kB.
22 # Therefore, the .text and .literal section must be combined in parenthesis
23 # in the linker script, such as: *(.literal .text).
25 # We need to post-process the generated vmlinux.lds scripts to convert
26 # *(xxx.text) to *(xxx.literal xxx.text) for the following text sections:
27 # .text .ref.text .*init.text .*exit.text .text.*
29 # Replicate rules in scripts/Makefile.build
31 sed-y
= -e
':a; s/\*(\([^)]*\)\.text\.unlikely/*(\1.literal.unlikely .{text}.unlikely/; ta; ' \
32 -e
':b; s/\*(\([^)]*\)\.text\(\.[a-z]*\)/*(\1.{text}\2.literal .{text}\2/; tb; ' \
33 -e
':c; s/\*(\([^)]*\)\(\.[a-z]*it\|\.ref\)\.text/*(\1\2.literal \2.{text}/; tc; ' \
34 -e
':d; s/\*(\([^)]\+ \|\)\.text/*(\1.literal .{text}/; td; ' \
35 -e
's/\.{text}/.text/g'
37 quiet_cmd__cpp_lds_S
= LDS
$@
38 cmd__cpp_lds_S
= $(CPP
) $(cpp_flags
) -P
-C
-Uxtensa
-D__ASSEMBLY__
$< \
41 $(obj
)/vmlinux.lds
: $(src
)/vmlinux.lds.S FORCE
42 $(call if_changed_dep
,_cpp_lds_S
)