Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
[linux-2.6-microblaze.git] / arch / sparc / vdso / Makefile
1 # SPDX-License-Identifier: GPL-2.0-only
2 #
3 # Building vDSO images for sparc.
4 #
5
6 KBUILD_CFLAGS += $(DISABLE_LTO)
7
8 VDSO64-$(CONFIG_SPARC64)        := y
9 VDSOCOMPAT-$(CONFIG_COMPAT)     := y
10
11 # files to link into the vdso
12 vobjs-y := vdso-note.o vclock_gettime.o
13
14 # files to link into kernel
15 obj-y                           += vma.o
16
17 # vDSO images to build
18 vdso_img-$(VDSO64-y)            += 64
19 vdso_img-$(VDSOCOMPAT-y)        += 32
20
21 vobjs := $(foreach F,$(vobjs-y),$(obj)/$F)
22
23 $(obj)/vdso.o: $(obj)/vdso.so
24
25 targets += vdso.lds $(vobjs-y)
26
27 # Build the vDSO image C files and link them in.
28 vdso_img_objs := $(vdso_img-y:%=vdso-image-%.o)
29 vdso_img_cfiles := $(vdso_img-y:%=vdso-image-%.c)
30 vdso_img_sodbg := $(vdso_img-y:%=vdso%.so.dbg)
31 obj-y += $(vdso_img_objs)
32 targets += $(vdso_img_cfiles)
33 targets += $(vdso_img_sodbg) $(vdso_img-y:%=vdso%.so)
34
35 CPPFLAGS_vdso.lds += -P -C
36
37 VDSO_LDFLAGS_vdso.lds = -m elf64_sparc -soname linux-vdso.so.1 --no-undefined \
38                         -z max-page-size=8192
39
40 $(obj)/vdso64.so.dbg: $(obj)/vdso.lds $(vobjs) FORCE
41         $(call if_changed,vdso)
42
43 HOST_EXTRACFLAGS += -I$(srctree)/tools/include
44 hostprogs-y                     += vdso2c
45
46 quiet_cmd_vdso2c = VDSO2C  $@
47       cmd_vdso2c = $(obj)/vdso2c $< $(<:%.dbg=%) $@
48
49 $(obj)/vdso-image-%.c: $(obj)/vdso%.so.dbg $(obj)/vdso%.so $(obj)/vdso2c FORCE
50         $(call if_changed,vdso2c)
51
52 #
53 # Don't omit frame pointers for ease of userspace debugging, but do
54 # optimize sibling calls.
55 #
56 CFL := $(PROFILING) -mcmodel=medlow -fPIC -O2 -fasynchronous-unwind-tables -m64 \
57        $(filter -g%,$(KBUILD_CFLAGS)) $(call cc-option, -fno-stack-protector) \
58        -fno-omit-frame-pointer -foptimize-sibling-calls \
59        -DDISABLE_BRANCH_PROFILING -DBUILD_VDSO
60
61 SPARC_REG_CFLAGS = -ffixed-g4 -ffixed-g5 -fcall-used-g5 -fcall-used-g7
62
63 $(vobjs): KBUILD_CFLAGS := $(filter-out $(GCC_PLUGINS_CFLAGS) $(SPARC_REG_CFLAGS),$(KBUILD_CFLAGS)) $(CFL)
64
65 #
66 # vDSO code runs in userspace and -pg doesn't help with profiling anyway.
67 #
68 CFLAGS_REMOVE_vdso-note.o = -pg
69 CFLAGS_REMOVE_vclock_gettime.o = -pg
70
71 $(obj)/%.so: OBJCOPYFLAGS := -S
72 $(obj)/%.so: $(obj)/%.so.dbg FORCE
73         $(call if_changed,objcopy)
74
75 CPPFLAGS_vdso32.lds = $(CPPFLAGS_vdso.lds)
76 VDSO_LDFLAGS_vdso32.lds = -m elf32_sparc -soname linux-gate.so.1
77
78 #This makes sure the $(obj) subdirectory exists even though vdso32/
79 #is not a kbuild sub-make subdirectory
80 override obj-dirs = $(dir $(obj)) $(obj)/vdso32/
81
82 targets += vdso32/vdso32.lds
83 targets += vdso32/vdso-note.o
84 targets += vdso32/vclock_gettime.o
85
86 KBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD_AFLAGS)) -DBUILD_VDSO
87 $(obj)/vdso32.so.dbg: KBUILD_AFLAGS = $(KBUILD_AFLAGS_32)
88 $(obj)/vdso32.so.dbg: asflags-$(CONFIG_SPARC64) += -m32
89
90 KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS))
91 KBUILD_CFLAGS_32 := $(filter-out -mcmodel=medlow,$(KBUILD_CFLAGS_32))
92 KBUILD_CFLAGS_32 := $(filter-out -fno-pic,$(KBUILD_CFLAGS_32))
93 KBUILD_CFLAGS_32 := $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS_32))
94 KBUILD_CFLAGS_32 := $(filter-out $(SPARC_REG_CFLAGS),$(KBUILD_CFLAGS_32))
95 KBUILD_CFLAGS_32 += -m32 -msoft-float -fpic
96 KBUILD_CFLAGS_32 += $(call cc-option, -fno-stack-protector)
97 KBUILD_CFLAGS_32 += $(call cc-option, -foptimize-sibling-calls)
98 KBUILD_CFLAGS_32 += -fno-omit-frame-pointer
99 KBUILD_CFLAGS_32 += -DDISABLE_BRANCH_PROFILING
100 KBUILD_CFLAGS_32 += -mv8plus
101 $(obj)/vdso32.so.dbg: KBUILD_CFLAGS = $(KBUILD_CFLAGS_32)
102
103 $(obj)/vdso32.so.dbg: FORCE \
104                         $(obj)/vdso32/vdso32.lds \
105                         $(obj)/vdso32/vclock_gettime.o \
106                         $(obj)/vdso32/vdso-note.o
107                 $(call  if_changed,vdso)
108
109 #
110 # The DSO images are built using a special linker script.
111 #
112 quiet_cmd_vdso = VDSO    $@
113       cmd_vdso = $(LD) -nostdlib -o $@ \
114                        $(VDSO_LDFLAGS) $(VDSO_LDFLAGS_$(filter %.lds,$(^F))) \
115                        -T $(filter %.lds,$^) $(filter %.o,$^) && \
116                 sh $(srctree)/$(src)/checkundef.sh '$(OBJDUMP)' '$@'
117
118 VDSO_LDFLAGS = -shared --hash-style=both --build-id -Bsymbolic
119 GCOV_PROFILE := n
120
121 #
122 # Install the unstripped copies of vdso*.so.  If our toolchain supports
123 # build-id, install .build-id links as well.
124 #
125 quiet_cmd_vdso_install = INSTALL $(@:install_%=%)
126 define cmd_vdso_install
127         cp $< "$(MODLIB)/vdso/$(@:install_%=%)"; \
128         if readelf -n $< |grep -q 'Build ID'; then \
129           buildid=`readelf -n $< |grep 'Build ID' |sed -e 's/^.*Build ID: \(.*\)$$/\1/'`; \
130           first=`echo $$buildid | cut -b-2`; \
131           last=`echo $$buildid | cut -b3-`; \
132           mkdir -p "$(MODLIB)/vdso/.build-id/$$first"; \
133           ln -sf "../../$(@:install_%=%)" "$(MODLIB)/vdso/.build-id/$$first/$$last.debug"; \
134         fi
135 endef
136
137 vdso_img_insttargets := $(vdso_img_sodbg:%.dbg=install_%)
138
139 $(MODLIB)/vdso: FORCE
140         @mkdir -p $(MODLIB)/vdso
141
142 $(vdso_img_insttargets): install_%: $(obj)/%.dbg $(MODLIB)/vdso FORCE
143         $(call cmd,vdso_install)
144
145 PHONY += vdso_install $(vdso_img_insttargets)
146 vdso_install: $(vdso_img_insttargets) FORCE