Makefile 1.7 KB

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  1. # SPDX-License-Identifier: GPL-2.0
  2. # List of files in the vdso, has to be asm only for now
  3. obj-vdso32-$(CONFIG_PPC64) = getcpu.o
  4. obj-vdso32 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o \
  5. $(obj-vdso32-y)
  6. # Build rules
  7. ifdef CROSS32_COMPILE
  8. VDSOCC := $(CROSS32_COMPILE)gcc
  9. else
  10. VDSOCC := $(CC)
  11. endif
  12. CC32FLAGS :=
  13. ifdef CONFIG_PPC64
  14. CC32FLAGS += -m32
  15. endif
  16. targets := $(obj-vdso32) vdso32.so vdso32.so.dbg
  17. obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
  18. GCOV_PROFILE := n
  19. UBSAN_SANITIZE := n
  20. ccflags-y := -shared -fno-common -fno-builtin
  21. ccflags-y += -nostdlib -Wl,-soname=linux-vdso32.so.1 \
  22. $(call cc-ldoption, -Wl$(comma)--hash-style=both)
  23. asflags-y := -D__VDSO32__ -s
  24. obj-y += vdso32_wrapper.o
  25. extra-y += vdso32.lds
  26. CPPFLAGS_vdso32.lds += -P -C -Upowerpc
  27. # Force dependency (incbin is bad)
  28. $(obj)/vdso32_wrapper.o : $(obj)/vdso32.so
  29. # link rule for the .so file, .lds has to be first
  30. $(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) FORCE
  31. $(call if_changed,vdso32ld)
  32. # strip rule for the .so file
  33. $(obj)/%.so: OBJCOPYFLAGS := -S
  34. $(obj)/%.so: $(obj)/%.so.dbg FORCE
  35. $(call if_changed,objcopy)
  36. # assembly rules for the .S files
  37. $(obj-vdso32): %.o: %.S FORCE
  38. $(call if_changed_dep,vdso32as)
  39. # actual build commands
  40. quiet_cmd_vdso32ld = VDSO32L $@
  41. cmd_vdso32ld = $(VDSOCC) $(c_flags) $(CC32FLAGS) -o $@ -Wl,-T$(filter %.lds,$^) $(filter %.o,$^)
  42. quiet_cmd_vdso32as = VDSO32A $@
  43. cmd_vdso32as = $(VDSOCC) $(a_flags) $(CC32FLAGS) -c -o $@ $<
  44. # install commands for the unstripped file
  45. quiet_cmd_vdso_install = INSTALL $@
  46. cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
  47. vdso32.so: $(obj)/vdso32.so.dbg
  48. @mkdir -p $(MODLIB)/vdso
  49. $(call cmd,vdso_install)
  50. vdso_install: vdso32.so