Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0 |
Chris Zankel | 5a0015d | 2005-06-23 22:01:16 -0700 | [diff] [blame] | 2 | # |
| 3 | # Makefile for the Linux/Xtensa kernel. |
| 4 | # |
| 5 | |
| 6 | extra-y := head.o vmlinux.lds |
| 7 | |
Max Filippov | 3e4196a | 2013-04-15 09:20:48 +0400 | [diff] [blame] | 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 \ |
| 10 | vectors.o |
Chris Zankel | 5a0015d | 2005-06-23 22:01:16 -0700 | [diff] [blame] | 11 | |
Chris Zankel | 5a0015d | 2005-06-23 22:01:16 -0700 | [diff] [blame] | 12 | obj-$(CONFIG_PCI) += pci.o |
| 13 | obj-$(CONFIG_MODULES) += xtensa_ksyms.o module.o |
Max Filippov | 478ba61 | 2013-05-24 07:02:25 +0400 | [diff] [blame] | 14 | obj-$(CONFIG_FUNCTION_TRACER) += mcount.o |
Max Filippov | f615136 | 2013-10-17 02:42:26 +0400 | [diff] [blame] | 15 | obj-$(CONFIG_SMP) += smp.o mxhead.o |
Max Filippov | 9bd46da | 2015-06-14 01:41:25 +0300 | [diff] [blame] | 16 | obj-$(CONFIG_XTENSA_VARIANT_HAVE_PERF_EVENTS) += perf_event.o |
Max Filippov | c91e02b | 2016-01-24 10:32:10 +0300 | [diff] [blame] | 17 | obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o |
Max Filippov | 3863c58 | 2016-11-16 15:02:29 -0800 | [diff] [blame] | 18 | obj-$(CONFIG_S32C1I_SELFTEST) += s32c1i_selftest.o |
Chris Zankel | 5a0015d | 2005-06-23 22:01:16 -0700 | [diff] [blame] | 19 | |
Chris Zankel | 78f3cdf | 2009-04-21 00:34:15 -0700 | [diff] [blame] | 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 |
Chris Zankel | 5a0015d | 2005-06-23 22:01:16 -0700 | [diff] [blame] | 30 | |
Max Filippov | 895fb31 | 2015-08-21 20:43:44 +0300 | [diff] [blame] | 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' |
Chris Zankel | 78f3cdf | 2009-04-21 00:34:15 -0700 | [diff] [blame] | 36 | |
| 37 | quiet_cmd__cpp_lds_S = LDS $@ |
Chris Zankel | c4c4594 | 2012-11-28 16:53:51 -0800 | [diff] [blame] | 38 | cmd__cpp_lds_S = $(CPP) $(cpp_flags) -P -C -Uxtensa -D__ASSEMBLY__ $< \ |
| 39 | | sed $(sed-y) >$@ |
Chris Zankel | 78f3cdf | 2009-04-21 00:34:15 -0700 | [diff] [blame] | 40 | |
| 41 | $(obj)/vmlinux.lds: $(src)/vmlinux.lds.S FORCE |
| 42 | $(call if_changed_dep,_cpp_lds_S) |