Martin Schwidefsky | b020632 | 2008-12-25 13:38:36 +0100 | [diff] [blame] | 1 | # List of files in the vdso, has to be asm only for now |
| 2 | |
Martin Schwidefsky | 249c543 | 2016-01-05 13:29:38 +0100 | [diff] [blame] | 3 | obj-vdso32 = gettimeofday.o clock_getres.o clock_gettime.o note.o getcpu.o |
Martin Schwidefsky | b020632 | 2008-12-25 13:38:36 +0100 | [diff] [blame] | 4 | |
| 5 | # Build rules |
| 6 | |
| 7 | targets := $(obj-vdso32) vdso32.so vdso32.so.dbg |
| 8 | obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32)) |
| 9 | |
| 10 | KBUILD_AFLAGS_31 := $(filter-out -m64,$(KBUILD_AFLAGS)) |
| 11 | KBUILD_AFLAGS_31 += -m31 -s |
| 12 | |
| 13 | KBUILD_CFLAGS_31 := $(filter-out -m64,$(KBUILD_CFLAGS)) |
| 14 | KBUILD_CFLAGS_31 += -m31 -fPIC -shared -fno-common -fno-builtin |
| 15 | KBUILD_CFLAGS_31 += -nostdlib -Wl,-soname=linux-vdso32.so.1 \ |
Martin Schwidefsky | aad1b68 | 2015-08-07 08:55:48 +0200 | [diff] [blame] | 16 | $(call cc-ldoption, -Wl$(comma)--hash-style=both) |
Martin Schwidefsky | b020632 | 2008-12-25 13:38:36 +0100 | [diff] [blame] | 17 | |
| 18 | $(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_31) |
| 19 | $(targets:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_31) |
| 20 | |
| 21 | obj-y += vdso32_wrapper.o |
| 22 | extra-y += vdso32.lds |
| 23 | CPPFLAGS_vdso32.lds += -P -C -U$(ARCH) |
| 24 | |
Peter Oberparleiter | add7490 | 2011-05-23 10:24:31 +0200 | [diff] [blame] | 25 | # Disable gcov profiling for VDSO code |
| 26 | GCOV_PROFILE := n |
| 27 | |
Martin Schwidefsky | b020632 | 2008-12-25 13:38:36 +0100 | [diff] [blame] | 28 | # Force dependency (incbin is bad) |
| 29 | $(obj)/vdso32_wrapper.o : $(obj)/vdso32.so |
| 30 | |
| 31 | # link rule for the .so file, .lds has to be first |
| 32 | $(obj)/vdso32.so.dbg: $(src)/vdso32.lds $(obj-vdso32) |
| 33 | $(call if_changed,vdso32ld) |
| 34 | |
| 35 | # strip rule for the .so file |
| 36 | $(obj)/%.so: OBJCOPYFLAGS := -S |
| 37 | $(obj)/%.so: $(obj)/%.so.dbg FORCE |
| 38 | $(call if_changed,objcopy) |
| 39 | |
| 40 | # assembly rules for the .S files |
| 41 | $(obj-vdso32): %.o: %.S |
| 42 | $(call if_changed_dep,vdso32as) |
| 43 | |
| 44 | # actual build commands |
| 45 | quiet_cmd_vdso32ld = VDSO32L $@ |
| 46 | cmd_vdso32ld = $(CC) $(c_flags) -Wl,-T $^ -o $@ |
| 47 | quiet_cmd_vdso32as = VDSO32A $@ |
| 48 | cmd_vdso32as = $(CC) $(a_flags) -c -o $@ $< |
| 49 | |
| 50 | # install commands for the unstripped file |
| 51 | quiet_cmd_vdso_install = INSTALL $@ |
| 52 | cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@ |
| 53 | |
| 54 | vdso32.so: $(obj)/vdso32.so.dbg |
| 55 | @mkdir -p $(MODLIB)/vdso |
| 56 | $(call cmd,vdso_install) |
| 57 | |
| 58 | vdso_install: vdso32.so |