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5a0015d6 CZ |
1 | # |
2 | # Makefile for the Linux/Xtensa kernel. | |
3 | # | |
4 | ||
5 | extra-y := head.o vmlinux.lds | |
6 | ||
3e4196a5 MF |
7 | obj-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 | |
5a0015d6 | 10 | |
5a0015d6 CZ |
11 | obj-$(CONFIG_KGDB) += xtensa-stub.o |
12 | obj-$(CONFIG_PCI) += pci.o | |
13 | obj-$(CONFIG_MODULES) += xtensa_ksyms.o module.o | |
478ba61a | 14 | obj-$(CONFIG_FUNCTION_TRACER) += mcount.o |
f615136c | 15 | obj-$(CONFIG_SMP) += smp.o mxhead.o |
9bd46da4 | 16 | obj-$(CONFIG_XTENSA_VARIANT_HAVE_PERF_EVENTS) += perf_event.o |
5a0015d6 | 17 | |
e85e335f MF |
18 | AFLAGS_head.o += -mtext-section-literals |
19 | ||
78f3cdfa CZ |
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). | |
24 | # | |
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.* | |
28 | # | |
29 | # Replicate rules in scripts/Makefile.build | |
30 | ||
895fb315 MF |
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' | |
78f3cdfa CZ |
36 | |
37 | quiet_cmd__cpp_lds_S = LDS $@ | |
c4c4594b CZ |
38 | cmd__cpp_lds_S = $(CPP) $(cpp_flags) -P -C -Uxtensa -D__ASSEMBLY__ $< \ |
39 | | sed $(sed-y) >$@ | |
5a0015d6 | 40 | |
78f3cdfa CZ |
41 | $(obj)/vmlinux.lds: $(src)/vmlinux.lds.S FORCE |
42 | $(call if_changed_dep,_cpp_lds_S) |