| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | # List of files in the vdso, has to be asm only for now |
| 2 | |
| Benjamin Herrenschmidt | 1b29f9d | 2005-05-01 08:58:43 -0700 | [diff] [blame] | 3 | obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | |
| 5 | # Build rules |
| 6 | |
| 7 | targets := $(obj-vdso64) vdso64.so |
| 8 | obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64)) |
| 9 | |
| 10 | EXTRA_CFLAGS := -shared -s -fno-common -fno-builtin |
| Roland McGrath | 0b0bf7a | 2006-07-30 03:04:06 -0700 | [diff] [blame^] | 11 | EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso64.so.1 \ |
| 12 | $(call ld-option, -Wl$(comma)--hash-style=sysv) |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | EXTRA_AFLAGS := -D__VDSO64__ -s |
| 14 | |
| 15 | obj-y += vdso64_wrapper.o |
| 16 | extra-y += vdso64.lds |
| 17 | CPPFLAGS_vdso64.lds += -P -C -U$(ARCH) |
| 18 | |
| 19 | # Force dependency (incbin is bad) |
| 20 | $(obj)/vdso64_wrapper.o : $(obj)/vdso64.so |
| 21 | |
| 22 | # link rule for the .so file, .lds has to be first |
| 23 | $(obj)/vdso64.so: $(src)/vdso64.lds $(obj-vdso64) |
| 24 | $(call if_changed,vdso64ld) |
| 25 | |
| 26 | # assembly rules for the .S files |
| 27 | $(obj-vdso64): %.o: %.S |
| 28 | $(call if_changed_dep,vdso64as) |
| 29 | |
| 30 | # actual build commands |
| 31 | quiet_cmd_vdso64ld = VDSO64L $@ |
| 32 | cmd_vdso64ld = $(CC) $(c_flags) -Wl,-T $^ -o $@ |
| 33 | quiet_cmd_vdso64as = VDSO64A $@ |
| 34 | cmd_vdso64as = $(CC) $(a_flags) -c -o $@ $< |
| 35 | |
| 36 | |