0249c9c1e7
This builds the 32-bit vDSO images in the arch/x86/vdso subdirectory. Nothing uses the images yet, but this paves the way for consolidating the vDSO build logic all in one place. The new images use a linker script sharing the layout parts from vdso-layout.lds.S with the 64-bit vDSO. A new vdso32-syms.lds is generated in the style of vdso-syms.lds. Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
38 lines
953 B
ArmAsm
38 lines
953 B
ArmAsm
/*
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* Linker script for 32-bit vDSO.
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* We #include the file to define the layout details.
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* Here we only choose the prelinked virtual address.
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*
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* This file defines the version script giving the user-exported symbols in
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* the DSO. We can define local symbols here called VDSO* to make their
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* values visible using the asm-x86/vdso.h macros from the kernel proper.
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*/
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#define VDSO_PRELINK 0
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#include "../vdso-layout.lds.S"
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/* The ELF entry point can be used to set the AT_SYSINFO value. */
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ENTRY(__kernel_vsyscall);
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/*
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* This controls what userland symbols we export from the vDSO.
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*/
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VERSION
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{
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LINUX_2.5 {
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global:
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__kernel_vsyscall;
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__kernel_sigreturn;
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__kernel_rt_sigreturn;
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local: *;
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};
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}
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/*
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* Symbols we define here called VDSO* get their values into vdso32-syms.h.
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*/
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VDSO32_PRELINK = VDSO_PRELINK;
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VDSO32_vsyscall = __kernel_vsyscall;
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VDSO32_sigreturn = __kernel_sigreturn;
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VDSO32_rt_sigreturn = __kernel_rt_sigreturn;
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