Lines Matching +full:2 +full:x32 +full:- +full:bit
1 # SPDX-License-Identifier: GPL-2.0
21 VDSO64-$(CONFIG_X86_64) := y
22 VDSOX32-$(CONFIG_X86_X32_ABI) := y
23 VDSO32-$(CONFIG_X86_32) := y
24 VDSO32-$(CONFIG_IA32_EMULATION) := y
27 vobjs-y := vdso-note.o vclock_gettime.o vgetcpu.o
28 vobjs32-y := vdso32/note.o vdso32/system_call.o vdso32/sigreturn.o
29 vobjs32-y += vdso32/vclock_gettime.o
32 obj-y += vma.o
39 vdso_img-$(VDSO64-y) += 64
40 vdso_img-$(VDSOX32-y) += x32
41 vdso_img-$(VDSO32-y) += 32
43 obj-$(VDSO32-y) += vdso32-setup.o
45 vobjs := $(foreach F,$(vobjs-y),$(obj)/$F)
46 vobjs32 := $(foreach F,$(vobjs32-y),$(obj)/$F)
50 targets += vdso.lds $(vobjs-y)
51 targets += vdso32/vdso32.lds $(vobjs32-y)
54 vdso_img_objs := $(vdso_img-y:%=vdso-image-%.o)
55 vdso_img_cfiles := $(vdso_img-y:%=vdso-image-%.c)
56 vdso_img_sodbg := $(vdso_img-y:%=vdso%.so.dbg)
57 obj-y += $(vdso_img_objs)
59 targets += $(vdso_img_sodbg) $(vdso_img-y:%=vdso%.so)
61 CPPFLAGS_vdso.lds += -P -C
63 VDSO_LDFLAGS_vdso.lds = -m elf_x86_64 -soname linux-vdso.so.1 --no-undefined \
64 -z max-page-size=4096
69 HOST_EXTRACFLAGS += -I$(srctree)/tools/include -I$(srctree)/include/uapi -I$(srctree)/arch/$(SUBARC…
75 $(obj)/vdso-image-%.c: $(obj)/vdso%.so.dbg $(obj)/vdso%.so $(obj)/vdso2c FORCE
82 CFL := $(PROFILING) -mcmodel=small -fPIC -O2 -fasynchronous-unwind-tables -m64 \
83 $(filter -g%,$(KBUILD_CFLAGS)) -fno-stack-protector \
84 -fno-omit-frame-pointer -foptimize-sibling-calls \
85 -DDISABLE_BRANCH_PROFILING -DBUILD_VDSO
93 $(vobjs): KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_LTO) $(GCC_PLUGINS_CFLAGS) $(RETPOLINE_CFLAGS),$…
94 $(vobjs): KBUILD_AFLAGS += -DBUILD_VDSO
97 # vDSO code runs in userspace and -pg doesn't help with profiling anyway.
99 CFLAGS_REMOVE_vclock_gettime.o = -pg
100 CFLAGS_REMOVE_vdso32/vclock_gettime.o = -pg
101 CFLAGS_REMOVE_vgetcpu.o = -pg
104 # X32 processes use x32 vDSO to access 64bit kernel data.
106 # Build x32 vDSO image:
107 # 1. Compile x32 vDSO as 64bit.
108 # 2. Convert object files to x32.
109 # 3. Build x32 VDSO image with x32 objects, which contains 64bit codes
110 # so that it can reach 64bit address space with 64bit pointers.
114 VDSO_LDFLAGS_vdsox32.lds = -m elf32_x86_64 -soname linux-vdso.so.1 \
115 -z max-page-size=4096
117 # x32-rebranded versions
118 vobjx32s-y := $(vobjs-y:.o=-x32.o)
121 vobjx32s := $(foreach F,$(vobjx32s-y),$(obj)/$F)
123 # Convert 64bit object file to x32 for x32 vDSO.
124 quiet_cmd_x32 = X32 $@
125 cmd_x32 = $(OBJCOPY) -O elf32-x86-64 $< $@
127 $(obj)/%-x32.o: $(obj)/%.o FORCE
128 $(call if_changed,x32)
130 targets += vdsox32.lds $(vobjx32s-y)
132 $(obj)/%.so: OBJCOPYFLAGS := -S
140 VDSO_LDFLAGS_vdso32.lds = -m elf_i386 -soname linux-gate.so.1
142 KBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD_AFLAGS)) -DBUILD_VDSO
144 $(obj)/vdso32.so.dbg: asflags-$(CONFIG_X86_64) += -m32
146 KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS))
147 KBUILD_CFLAGS_32 := $(filter-out -mcmodel=kernel,$(KBUILD_CFLAGS_32))
148 KBUILD_CFLAGS_32 := $(filter-out -fno-pic,$(KBUILD_CFLAGS_32))
149 KBUILD_CFLAGS_32 := $(filter-out -mfentry,$(KBUILD_CFLAGS_32))
150 KBUILD_CFLAGS_32 := $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS_32))
151 KBUILD_CFLAGS_32 := $(filter-out $(RETPOLINE_CFLAGS),$(KBUILD_CFLAGS_32))
152 KBUILD_CFLAGS_32 := $(filter-out $(CC_FLAGS_LTO),$(KBUILD_CFLAGS_32))
153 KBUILD_CFLAGS_32 += -m32 -msoft-float -mregparm=0 -fpic
154 KBUILD_CFLAGS_32 += -fno-stack-protector
155 KBUILD_CFLAGS_32 += $(call cc-option, -foptimize-sibling-calls)
156 KBUILD_CFLAGS_32 += -fno-omit-frame-pointer
157 KBUILD_CFLAGS_32 += -DDISABLE_BRANCH_PROFILING
174 cmd_vdso = $(LD) -nostdlib -o $@ \
176 -T $(filter %.lds,$^) $(filter %.o,$^) && \
179 VDSO_LDFLAGS = -shared --hash-style=both --build-id=sha1 \
180 $(call ld-option, --eh-frame-hdr) -Bsymbolic -z noexecstack
188 # build-id, install .build-id links as well.
193 if readelf -n $< |grep -q 'Build ID'; then \
194 buildid=`readelf -n $< |grep 'Build ID' |sed -e 's/^.*Build ID: \(.*\)$$/\1/'`; \
195 first=`echo $$buildid | cut -b-2`; \
196 last=`echo $$buildid | cut -b3-`; \
197 mkdir -p "$(MODLIB)/vdso/.build-id/$$first"; \
198 ln -sf "../../$(@:install_%=%)" "$(MODLIB)/vdso/.build-id/$$first/$$last.debug"; \
205 @mkdir -p $(MODLIB)/vdso
213 clean-files := vdso32.so vdso32.so.dbg vdso64* vdso-image-*.c vdsox32.so*