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caf539cd10
Older versions of bintutils do not allow symbol math across different
segments on sparc:
====================
Assembler messages:
99: Error: operation combines symbols in different segments
====================
This is controlled by whether or not DIFF_EXPR_OK is defined in
gas/config/tc-*.h and for sparc this was not the case until mid-2017.
So we have to patch between %stick and %tick another way.
Do what powerpc does and emit two versions of the relevant functions,
one using %tick and one using %stick, and patch the symbols in the
dynamic symbol table.
Fixes: 2f6c9bf31a0b ("sparc: Improve VDSO instruction patching.")
Reported-by: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 lines
491 B
C
23 lines
491 B
C
/*
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* Copyright (c) 2017 Oracle and/or its affiliates. All rights reserved.
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*/
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#ifndef _ASM_SPARC_VDSO_H
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#define _ASM_SPARC_VDSO_H
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struct vdso_image {
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void *data;
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unsigned long size; /* Always a multiple of PAGE_SIZE */
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long sym_vvar_start; /* Negative offset to the vvar area */
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};
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#ifdef CONFIG_SPARC64
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extern const struct vdso_image vdso_image_64_builtin;
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#endif
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#ifdef CONFIG_COMPAT
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extern const struct vdso_image vdso_image_32_builtin;
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#endif
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#endif /* _ASM_SPARC_VDSO_H */
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