linux/arch/xtensa/kernel/Makefile
<<
>>
Prefs
   1#
   2# Makefile for the Linux/Xtensa kernel.
   3#
   4
   5extra-y := head.o vmlinux.lds
   6
   7obj-y := align.o entry.o irq.o coprocessor.o process.o ptrace.o \
   8         setup.o signal.o syscall.o time.o traps.o vectors.o platform.o  \
   9         pci-dma.o init_task.o io.o
  10
  11obj-$(CONFIG_KGDB) += xtensa-stub.o
  12obj-$(CONFIG_PCI) += pci.o
  13obj-$(CONFIG_MODULES) += xtensa_ksyms.o module.o
  14
  15# In the Xtensa architecture, assembly generates literals which must always
  16# precede the L32R instruction with a relative offset less than 256 kB.
  17# Therefore, the .text and .literal section must be combined in parenthesis
  18# in the linker script, such as: *(.literal .text).
  19#
  20# We need to post-process the generated vmlinux.lds scripts to convert
  21# *(xxx.text) to  *(xxx.literal xxx.text) for the following text sections:
  22#   .text .ref.text .*init.text .*exit.text .text.*
  23#
  24# Replicate rules in scripts/Makefile.build
  25
  26sed-y = -e 's/\*(\(\.[a-z]*it\|\.ref\|\)\.text)/*(\1.literal \1.text)/g'    \
  27        -e 's/\*(\(\.text\.[a-z]*\))/*(\1.literal \1)/g'
  28
  29quiet_cmd__cpp_lds_S = LDS     $@
  30      cmd__cpp_lds_S = $(CPP) $(cpp_flags) -P -C -Uxtensa -D__ASSEMBLY__ $< \
  31                       | sed $(sed-y) >$@
  32
  33$(obj)/vmlinux.lds: $(src)/vmlinux.lds.S FORCE
  34        $(call if_changed_dep,_cpp_lds_S)
  35