1 # SPDX-License-Identifier: GPL-2.0-only
2 #
3 # Building vDSO images for sparc.
4 #
5
6 # files to link into the vdso
7 vobjs-y := vdso-note.o vclock_gettime.o
8
9 # files to link into kernel
10 obj-y += vma.o
11
12 # vDSO images to build
13 obj-$(CONFIG_SPARC64) += vdso-image-
14 obj-$(CONFIG_COMPAT) += vdso-image-
15
16 vobjs := $(addprefix $(obj)/, $(vobjs-y))
17
18 $(obj)/vdso.o: $(obj)/vdso.so
19
20 targets += vdso.lds $(vobjs-y)
21 targets += $(foreach x, 32 64, vdso-image-$(x)
22
23 CPPFLAGS_vdso.lds += -P -C
24
25 VDSO_LDFLAGS_vdso.lds = -m elf64_sparc -soname
26 -z max-page-size=8192
27
28 $(obj)/vdso64.so.dbg: $(obj)/vdso.lds $(vobjs)
29 $(call if_changed,vdso)
30
31 HOST_EXTRACFLAGS += -I$(srctree)/tools/include
32 hostprogs += vdso2c
33
34 quiet_cmd_vdso2c = VDSO2C $@
35 cmd_vdso2c = $(obj)/vdso2c $< $(<:%.dbg=
36
37 $(obj)/vdso-image-%.c: $(obj)/vdso%.so.dbg $(o
38 $(call if_changed,vdso2c)
39
40 #
41 # Don't omit frame pointers for ease of usersp
42 # optimize sibling calls.
43 #
44 CFL := $(PROFILING) -mcmodel=medlow -fPIC -O2
45 $(filter -g%,$(KBUILD_CFLAGS)) -fno-sta
46 -fno-omit-frame-pointer -foptimize-sibl
47 -DDISABLE_BRANCH_PROFILING -DBUILD_VDSO
48
49 SPARC_REG_CFLAGS = -ffixed-g4 -ffixed-g5 -fcal
50
51 $(vobjs): KBUILD_CFLAGS := $(filter-out $(RAND
52
53 #
54 # vDSO code runs in userspace and -pg doesn't
55 #
56 CFLAGS_REMOVE_vclock_gettime.o = -pg
57 CFLAGS_REMOVE_vdso32/vclock_gettime.o = -pg
58
59 $(obj)/%.so: OBJCOPYFLAGS := -S
60 $(obj)/%.so: $(obj)/%.so.dbg FORCE
61 $(call if_changed,objcopy)
62
63 CPPFLAGS_vdso32/vdso32.lds = $(CPPFLAGS_vdso.l
64 VDSO_LDFLAGS_vdso32.lds = -m elf32_sparc -sona
65
66 #This makes sure the $(obj) subdirectory exist
67 #is not a kbuild sub-make subdirectory
68 override obj-dirs = $(dir $(obj)) $(obj)/vdso3
69
70 targets += vdso32/vdso32.lds
71 targets += vdso32/vdso-note.o
72 targets += vdso32/vclock_gettime.o
73
74 KBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD
75 $(obj)/vdso32.so.dbg: KBUILD_AFLAGS = $(KBUILD
76 $(obj)/vdso32.so.dbg: asflags-$(CONFIG_SPARC64
77
78 KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD
79 KBUILD_CFLAGS_32 := $(filter-out -mcmodel=medl
80 KBUILD_CFLAGS_32 := $(filter-out -fno-pic,$(KB
81 KBUILD_CFLAGS_32 := $(filter-out $(RANDSTRUCT_
82 KBUILD_CFLAGS_32 := $(filter-out $(GCC_PLUGINS
83 KBUILD_CFLAGS_32 := $(filter-out $(SPARC_REG_C
84 KBUILD_CFLAGS_32 += -m32 -msoft-float -fpic
85 KBUILD_CFLAGS_32 += -fno-stack-protector
86 KBUILD_CFLAGS_32 += $(call cc-option, -foptimi
87 KBUILD_CFLAGS_32 += -fno-omit-frame-pointer
88 KBUILD_CFLAGS_32 += -DDISABLE_BRANCH_PROFILING
89 KBUILD_CFLAGS_32 += -mv8plus
90 $(obj)/vdso32.so.dbg: KBUILD_CFLAGS = $(KBUILD
91
92 $(obj)/vdso32.so.dbg: FORCE \
93 $(obj)/vdso32/vdso32.l
94 $(obj)/vdso32/vclock_g
95 $(obj)/vdso32/vdso-not
96 $(call if_changed,vdso)
97
98 #
99 # The DSO images are built using a special lin
100 #
101 quiet_cmd_vdso = VDSO $@
102 cmd_vdso = $(LD) -nostdlib -o $@ \
103 $(VDSO_LDFLAGS) $(VDSO_
104 -T $(filter %.lds,$^) $
105 sh $(src)/checkundef.sh '$(OBJ
106
107 VDSO_LDFLAGS = -shared --hash-style=both --bui
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