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This keeps an unstripped copy of the vDSO images built before they are stripped and embedded in the kernel. The unstripped copies get installed in $(MODLIB)/vdso/ by "make install" (or you can explicitly use the subtarget "make vdso_install"). These files can be useful when they contain source-level debugging information. [ tglx: arch/x86 adaptation ] Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
53 lines
1.5 KiB
Makefile
53 lines
1.5 KiB
Makefile
#
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# Makefile for the ia32 kernel emulation subsystem.
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#
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obj-$(CONFIG_IA32_EMULATION) := ia32entry.o sys_ia32.o ia32_signal.o tls32.o \
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ia32_binfmt.o fpu32.o ptrace32.o syscall32.o syscall32_syscall.o \
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mmap32.o
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sysv-$(CONFIG_SYSVIPC) := ipc32.o
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obj-$(CONFIG_IA32_EMULATION) += $(sysv-y)
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obj-$(CONFIG_IA32_AOUT) += ia32_aout.o
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audit-class-$(CONFIG_AUDIT) := audit.o
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obj-$(CONFIG_IA32_EMULATION) += $(audit-class-y)
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$(obj)/syscall32_syscall.o: \
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$(foreach F,sysenter syscall,$(obj)/vsyscall-$F.so)
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# Teach kbuild about targets
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targets := $(foreach F,$(addprefix vsyscall-,sysenter syscall),\
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$F.o $F.so $F.so.dbg)
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# The DSO images are built using a special linker script
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quiet_cmd_syscall = SYSCALL $@
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cmd_syscall = $(CC) -m32 -nostdlib -shared \
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$(call ld-option, -Wl$(comma)--hash-style=sysv) \
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-Wl,-soname=linux-gate.so.1 -o $@ \
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-Wl,-T,$(filter-out FORCE,$^)
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$(obj)/%.so: OBJCOPYFLAGS := -S
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$(obj)/%.so: $(obj)/%.so.dbg FORCE
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$(call if_changed,objcopy)
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$(obj)/vsyscall-sysenter.so.dbg $(obj)/vsyscall-syscall.so.dbg: \
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$(obj)/vsyscall-%.so.dbg: $(src)/vsyscall.lds $(obj)/vsyscall-%.o FORCE
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$(call if_changed,syscall)
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AFLAGS_vsyscall-sysenter.o = -m32 -Wa,-32
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AFLAGS_vsyscall-syscall.o = -m32 -Wa,-32
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vdsos := vdso32-sysenter.so vdso32-syscall.so
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quiet_cmd_vdso_install = INSTALL $@
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cmd_vdso_install = cp $(@:vdso32-%.so=$(obj)/vsyscall-%.so.dbg) \
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$(MODLIB)/vdso/$@
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$(vdsos):
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@mkdir -p $(MODLIB)/vdso
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$(call cmd,vdso_install)
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vdso_install: $(vdsos)
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