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TOMOYO Linux Cross Reference
Linux/arch/mips/vdso/Makefile

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Diff markup

Differences between /arch/mips/vdso/Makefile (Version linux-6.12-rc7) and /arch/sparc/vdso/Makefile (Version linux-4.17.19)


  1 # SPDX-License-Identifier: GPL-2.0             << 
  2 # Objects to go into the VDSO.                 << 
  3                                                << 
  4 # Include the generic Makefile to check the bu << 
  5 include $(srctree)/lib/vdso/Makefile           << 
  6                                                << 
  7 obj-vdso-y := elf.o vgettimeofday.o sigreturn. << 
  8                                                << 
  9 # Common compiler flags between ABIs.          << 
 10 ccflags-vdso := \                              << 
 11         $(filter -I%,$(KBUILD_CFLAGS)) \       << 
 12         $(filter -E%,$(KBUILD_CFLAGS)) \       << 
 13         $(filter -mmicromips,$(KBUILD_CFLAGS)) << 
 14         $(filter -march=%,$(KBUILD_CFLAGS)) \  << 
 15         $(filter -m%-float,$(KBUILD_CFLAGS)) \ << 
 16         $(filter -mno-loongson-%,$(KBUILD_CFLA << 
 17         $(CLANG_FLAGS) \                       << 
 18         -D__VDSO__                             << 
 19                                                << 
 20 ifndef CONFIG_64BIT                            << 
 21 ccflags-vdso += -DBUILD_VDSO32                 << 
 22 endif                                          << 
 23                                                << 
 24 #                                              << 
 25 # The -fno-jump-tables flag only prevents the  << 
 26 # jump tables but does not prevent the compile << 
 27 # offsets.                                     << 
 28 cflags-vdso := $(ccflags-vdso) \               << 
 29         $(filter -W%,$(filter-out -Wa$(comma)% << 
 30         -O3 -g -fPIC -fno-strict-aliasing -fno << 
 31         -mrelax-pic-calls $(call cc-option, -m << 
 32         -fno-stack-protector -fno-jump-tables  << 
 33         $(call cc-option, -fno-asynchronous-un << 
 34 aflags-vdso := $(ccflags-vdso) \               << 
 35         -D__ASSEMBLY__ -Wa,-gdwarf-2           << 
 36                                                << 
 37 ifneq ($(c-gettimeofday-y),)                   << 
 38 CFLAGS_vgettimeofday.o = -include $(c-gettimeo << 
 39                                                << 
 40 # config-n32-o32-env.c prepares the environmen << 
 41 # library on a 64bit kernel.                   << 
 42 # Note: Needs to be included before than the g << 
 43 CFLAGS_vgettimeofday-o32.o = -include $(src)/c << 
 44 CFLAGS_vgettimeofday-n32.o = -include $(src)/c << 
 45 endif                                          << 
 46                                                << 
 47 CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTR << 
 48                                                << 
 49 ifdef CONFIG_MIPS_DISABLE_VDSO                 << 
 50   obj-vdso-y := $(filter-out vgettimeofday.o,  << 
 51 endif                                          << 
 52                                                << 
 53 # VDSO linker flags.                           << 
 54 ldflags-y := -Bsymbolic --no-undefined -soname << 
 55         $(filter -E%,$(KBUILD_CFLAGS)) -shared << 
 56         -G 0 --eh-frame-hdr --hash-style=sysv  << 
 57                                                << 
 58 CFLAGS_REMOVE_vdso.o = $(CC_FLAGS_FTRACE)      << 
 59                                                << 
 60 # Check that we don't have PIC 'jalr t9' calls << 
 61 quiet_cmd_vdso_mips_check = VDSOCHK $@         << 
 62       cmd_vdso_mips_check = if $(OBJDUMP) --di << 
 63                        then (echo >&2 "$@: PIC << 
 64                              rm -f $@; /bin/fa << 
 65                                                << 
 66 #                                              << 
 67 # Shared build commands.                       << 
 68 #                                              << 
 69                                                << 
 70 quiet_cmd_vdsold_and_vdso_check = LD      $@   << 
 71       cmd_vdsold_and_vdso_check = $(cmd_ld); $ << 
 72                                                << 
 73 quiet_cmd_vdsoas_o_S = AS      $@              << 
 74       cmd_vdsoas_o_S = $(CC) $(a_flags) -c -o  << 
 75                                                << 
 76 # Strip rule for the raw .so files             << 
 77 $(obj)/%.so.raw: OBJCOPYFLAGS := -S            << 
 78 $(obj)/%.so.raw: $(obj)/%.so.dbg.raw FORCE     << 
 79         $(call if_changed,objcopy)             << 
 80                                                << 
 81 hostprogs := genvdso                           << 
 82                                                << 
 83 quiet_cmd_genvdso = GENVDSO $@                 << 
 84 define cmd_genvdso                             << 
 85         $(foreach file,$(filter %.raw,$^),cp $ << 
 86         $(obj)/genvdso $(<:%.raw=%) $(<:%.dbg. << 
 87 endef                                          << 
 88                                                << 
 89 #                                                   1 #
 90 # Build native VDSO.                           !!   2 # Building vDSO images for sparc.
 91 #                                                   3 #
 92                                                     4 
 93 native-abi := $(filter -mabi=%,$(KBUILD_CFLAGS !!   5 KBUILD_CFLAGS += $(DISABLE_LTO)
 94                                                << 
 95 targets += $(obj-vdso-y)                       << 
 96 targets += vdso.lds                            << 
 97 targets += vdso.so.dbg.raw vdso.so.raw         << 
 98 targets += vdso.so.dbg vdso.so                 << 
 99 targets += vdso-image.c                        << 
100                                                     6 
101 obj-vdso := $(obj-vdso-y:%.o=$(obj)/%.o)       !!   7 VDSO64-$(CONFIG_SPARC64)        := y
                                                   >>   8 VDSOCOMPAT-$(CONFIG_COMPAT)     := y
102                                                     9 
103 $(obj-vdso): KBUILD_CFLAGS := $(cflags-vdso) $ !!  10 # files to link into the vdso
104 $(obj-vdso): KBUILD_AFLAGS := $(aflags-vdso) $ !!  11 vobjs-y := vdso-note.o vclock_gettime.o
105                                                    12 
106 $(obj)/vdso.lds: KBUILD_CPPFLAGS := $(ccflags- !!  13 # files to link into kernel
                                                   >>  14 obj-y                           += vma.o
107                                                    15 
108 $(obj)/vdso.so.dbg.raw: $(obj)/vdso.lds $(obj- !!  16 # vDSO images to build
109         $(call if_changed,vdsold_and_vdso_chec !!  17 vdso_img-$(VDSO64-y)            += 64
                                                   >>  18 vdso_img-$(VDSOCOMPAT-y)        += 32
110                                                    19 
111 $(obj)/vdso-image.c: $(obj)/vdso.so.dbg.raw $( !!  20 vobjs := $(foreach F,$(vobjs-y),$(obj)/$F)
112                      $(obj)/genvdso FORCE      << 
113         $(call if_changed,genvdso)             << 
114                                                    21 
115 obj-y += vdso-image.o                          !!  22 $(obj)/vdso.o: $(obj)/vdso.so
116                                                << 
117 #                                              << 
118 # Build O32 VDSO.                              << 
119 #                                              << 
120                                                    23 
121 # Define these outside the ifdef to ensure the !!  24 targets += vdso.lds $(vobjs-y)
122 targets += $(obj-vdso-y:%.o=%-o32.o)           << 
123 targets += vdso-o32.lds                        << 
124 targets += vdso-o32.so.dbg.raw vdso-o32.so.raw << 
125 targets += vdso-o32.so.dbg vdso-o32.so         << 
126 targets += vdso-o32-image.c                    << 
127                                                    25 
128 ifdef CONFIG_MIPS32_O32                        !!  26 # Build the vDSO image C files and link them in.
                                                   >>  27 vdso_img_objs := $(vdso_img-y:%=vdso-image-%.o)
                                                   >>  28 vdso_img_cfiles := $(vdso_img-y:%=vdso-image-%.c)
                                                   >>  29 vdso_img_sodbg := $(vdso_img-y:%=vdso%.so.dbg)
                                                   >>  30 obj-y += $(vdso_img_objs)
                                                   >>  31 targets += $(vdso_img_cfiles)
                                                   >>  32 targets += $(vdso_img_sodbg) $(vdso_img-y:%=vdso%.so)
129                                                    33 
130 obj-vdso-o32 := $(obj-vdso-y:%.o=$(obj)/%-o32. !!  34 export CPPFLAGS_vdso.lds += -P -C
131                                                    35 
132 $(obj-vdso-o32): KBUILD_CFLAGS := $(cflags-vds !!  36 VDSO_LDFLAGS_vdso.lds = -m64 -Wl,-soname=linux-vdso.so.1 \
133 $(obj-vdso-o32): KBUILD_AFLAGS := $(aflags-vds !!  37                         -Wl,--no-undefined \
                                                   >>  38                         -Wl,-z,max-page-size=8192 -Wl,-z,common-page-size=8192 \
                                                   >>  39                         $(DISABLE_LTO)
134                                                    40 
135 $(obj)/%-o32.o: $(src)/%.S FORCE               !!  41 $(obj)/vdso64.so.dbg: $(src)/vdso.lds $(vobjs) FORCE
136         $(call if_changed_dep,vdsoas_o_S)      !!  42         $(call if_changed,vdso)
137                                                    43 
138 $(obj)/%-o32.o: $(src)/%.c FORCE               !!  44 HOST_EXTRACFLAGS += -I$(srctree)/tools/include
139         $(call cmd,force_checksrc)             !!  45 hostprogs-y                     += vdso2c
140         $(call if_changed_rule,cc_o_c)         << 
141                                                    46 
142 $(obj)/vdso-o32.lds: KBUILD_CPPFLAGS := $(ccfl !!  47 quiet_cmd_vdso2c = VDSO2C  $@
143 $(obj)/vdso-o32.lds: $(src)/vdso.lds.S FORCE   !!  48 define cmd_vdso2c
144         $(call if_changed_dep,cpp_lds_S)       !!  49         $(obj)/vdso2c $< $(<:%.dbg=%) $@
145                                                !!  50 endef
146 $(obj)/vdso-o32.so.dbg.raw: $(obj)/vdso-o32.ld << 
147         $(call if_changed,vdsold_and_vdso_chec << 
148                                                << 
149 $(obj)/vdso-o32-image.c: VDSO_NAME := o32      << 
150 $(obj)/vdso-o32-image.c: $(obj)/vdso-o32.so.db << 
151                          $(obj)/genvdso FORCE  << 
152         $(call if_changed,genvdso)             << 
153                                                << 
154 obj-y += vdso-o32-image.o                      << 
155                                                    51 
156 endif                                          !!  52 $(obj)/vdso-image-%.c: $(obj)/vdso%.so.dbg $(obj)/vdso%.so $(obj)/vdso2c FORCE
                                                   >>  53         $(call if_changed,vdso2c)
157                                                    54 
158 #                                                  55 #
159 # Build N32 VDSO.                              !!  56 # Don't omit frame pointers for ease of userspace debugging, but do
                                                   >>  57 # optimize sibling calls.
160 #                                                  58 #
                                                   >>  59 CFL := $(PROFILING) -mcmodel=medlow -fPIC -O2 -fasynchronous-unwind-tables \
                                                   >>  60        -m64 -ffixed-g2 -ffixed-g3 -fcall-used-g4 -fcall-used-g5 -ffixed-g6 \
                                                   >>  61        -ffixed-g7 $(filter -g%,$(KBUILD_CFLAGS)) \
                                                   >>  62        $(call cc-option, -fno-stack-protector) -fno-omit-frame-pointer \
                                                   >>  63        -foptimize-sibling-calls -DBUILD_VDSO
161                                                    64 
162 targets += $(obj-vdso-y:%.o=%-n32.o)           !!  65 $(vobjs): KBUILD_CFLAGS += $(CFL)
163 targets += vdso-n32.lds                        << 
164 targets += vdso-n32.so.dbg.raw vdso-n32.so.raw << 
165 targets += vdso-n32.so.dbg vdso-n32.so         << 
166 targets += vdso-n32-image.c                    << 
167                                                << 
168 ifdef CONFIG_MIPS32_N32                        << 
169                                                << 
170 obj-vdso-n32 := $(obj-vdso-y:%.o=$(obj)/%-n32. << 
171                                                    66 
172 $(obj-vdso-n32): KBUILD_CFLAGS := $(cflags-vds !!  67 #
173 $(obj-vdso-n32): KBUILD_AFLAGS := $(aflags-vds !!  68 # vDSO code runs in userspace and -pg doesn't help with profiling anyway.
174                                                !!  69 #
175 $(obj)/%-n32.o: $(src)/%.S FORCE               !!  70 CFLAGS_REMOVE_vdso-note.o = -pg
176         $(call if_changed_dep,vdsoas_o_S)      !!  71 CFLAGS_REMOVE_vclock_gettime.o = -pg
177                                                    72 
178 $(obj)/%-n32.o: $(src)/%.c FORCE               !!  73 $(obj)/%.so: OBJCOPYFLAGS := -S
179         $(call cmd,force_checksrc)             !!  74 $(obj)/%.so: $(obj)/%.so.dbg
180         $(call if_changed_rule,cc_o_c)         !!  75         $(call if_changed,objcopy)
181                                                    76 
182 $(obj)/vdso-n32.lds: KBUILD_CPPFLAGS := $(ccfl !!  77 CPPFLAGS_vdso32.lds = $(CPPFLAGS_vdso.lds)
183 $(obj)/vdso-n32.lds: $(src)/vdso.lds.S FORCE   !!  78 VDSO_LDFLAGS_vdso32.lds = -m32 -Wl,-m,elf32_sparc,-soname=linux-gate.so.1
184         $(call if_changed_dep,cpp_lds_S)       << 
185                                                    79 
186 $(obj)/vdso-n32.so.dbg.raw: $(obj)/vdso-n32.ld !!  80 #This makes sure the $(obj) subdirectory exists even though vdso32/
187         $(call if_changed,vdsold_and_vdso_chec !!  81 #is not a kbuild sub-make subdirectory
                                                   >>  82 override obj-dirs = $(dir $(obj)) $(obj)/vdso32/
                                                   >>  83 
                                                   >>  84 targets += vdso32/vdso32.lds
                                                   >>  85 targets += vdso32/vdso-note.o
                                                   >>  86 targets += vdso32/vclock_gettime.o
                                                   >>  87 
                                                   >>  88 KBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD_AFLAGS)) -DBUILD_VDSO
                                                   >>  89 $(obj)/vdso32.so.dbg: KBUILD_AFLAGS = $(KBUILD_AFLAGS_32)
                                                   >>  90 $(obj)/vdso32.so.dbg: asflags-$(CONFIG_SPARC64) += -m32
                                                   >>  91 
                                                   >>  92 KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS))
                                                   >>  93 KBUILD_CFLAGS_32 := $(filter-out -mcmodel=medlow,$(KBUILD_CFLAGS_32))
                                                   >>  94 KBUILD_CFLAGS_32 := $(filter-out -fno-pic,$(KBUILD_CFLAGS_32))
                                                   >>  95 KBUILD_CFLAGS_32 := $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS_32))
                                                   >>  96 KBUILD_CFLAGS_32 += -m32 -msoft-float -fpic -mno-app-regs -ffixed-g7
                                                   >>  97 KBUILD_CFLAGS_32 += $(call cc-option, -fno-stack-protector)
                                                   >>  98 KBUILD_CFLAGS_32 += $(call cc-option, -foptimize-sibling-calls)
                                                   >>  99 KBUILD_CFLAGS_32 += -fno-omit-frame-pointer
                                                   >> 100 KBUILD_CFLAGS_32 += -DDISABLE_BRANCH_PROFILING
                                                   >> 101 KBUILD_CFLAGS_32 += -mv8plus
                                                   >> 102 $(obj)/vdso32.so.dbg: KBUILD_CFLAGS = $(KBUILD_CFLAGS_32)
                                                   >> 103 
                                                   >> 104 $(obj)/vdso32.so.dbg: FORCE \
                                                   >> 105                         $(obj)/vdso32/vdso32.lds \
                                                   >> 106                         $(obj)/vdso32/vclock_gettime.o \
                                                   >> 107                         $(obj)/vdso32/vdso-note.o
                                                   >> 108                 $(call  if_changed,vdso)
                                                   >> 109 
                                                   >> 110 #
                                                   >> 111 # The DSO images are built using a special linker script.
                                                   >> 112 #
                                                   >> 113 quiet_cmd_vdso = VDSO    $@
                                                   >> 114       cmd_vdso = $(CC) -nostdlib -o $@ \
                                                   >> 115                        $(VDSO_LDFLAGS) $(VDSO_LDFLAGS_$(filter %.lds,$(^F))) \
                                                   >> 116                        -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^)
                                                   >> 117 
                                                   >> 118 VDSO_LDFLAGS = -fPIC -shared $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) \
                                                   >> 119         $(call cc-ldoption, -Wl$(comma)--build-id) -Wl,-Bsymbolic
                                                   >> 120 GCOV_PROFILE := n
                                                   >> 121 
                                                   >> 122 #
                                                   >> 123 # Install the unstripped copies of vdso*.so.  If our toolchain supports
                                                   >> 124 # build-id, install .build-id links as well.
                                                   >> 125 #
                                                   >> 126 quiet_cmd_vdso_install = INSTALL $(@:install_%=%)
                                                   >> 127 define cmd_vdso_install
                                                   >> 128         cp $< "$(MODLIB)/vdso/$(@:install_%=%)"; \
                                                   >> 129         if readelf -n $< |grep -q 'Build ID'; then \
                                                   >> 130           buildid=`readelf -n $< |grep 'Build ID' |sed -e 's/^.*Build ID: \(.*\)$$/\1/'`; \
                                                   >> 131           first=`echo $$buildid | cut -b-2`; \
                                                   >> 132           last=`echo $$buildid | cut -b3-`; \
                                                   >> 133           mkdir -p "$(MODLIB)/vdso/.build-id/$$first"; \
                                                   >> 134           ln -sf "../../$(@:install_%=%)" "$(MODLIB)/vdso/.build-id/$$first/$$last.debug"; \
                                                   >> 135         fi
                                                   >> 136 endef
188                                                   137 
189 $(obj)/vdso-n32-image.c: VDSO_NAME := n32      !! 138 vdso_img_insttargets := $(vdso_img_sodbg:%.dbg=install_%)
190 $(obj)/vdso-n32-image.c: $(obj)/vdso-n32.so.db << 
191                          $(obj)/genvdso FORCE  << 
192         $(call if_changed,genvdso)             << 
193                                                   139 
194 obj-y += vdso-n32-image.o                      !! 140 $(MODLIB)/vdso: FORCE
                                                   >> 141         @mkdir -p $(MODLIB)/vdso
195                                                   142 
196 endif                                          !! 143 $(vdso_img_insttargets): install_%: $(obj)/%.dbg $(MODLIB)/vdso FORCE
                                                   >> 144         $(call cmd,vdso_install)
197                                                   145 
198 # FIXME: Need install rule for debug.          !! 146 PHONY += vdso_install $(vdso_img_insttargets)
199 # Needs to deal with dependency for generation !! 147 vdso_install: $(vdso_img_insttargets) FORCE
                                                      

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