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When dynamically linking, ifunc resolvers are called before TLS is
initialized, so they cannot be safely stack-protected.
We avoid disabling stack-protection on large numbers of files by
using __attribute__ ((__optimize__ ("-fno-stack-protector")))
to turn it off just for the resolvers themselves. (We provide
the attribute even when statically linking, because we will later
use it elsewhere too.)
29 lines
430 B
C
29 lines
430 B
C
/* Used by the elf ifunc tests. */
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#ifndef ELF_IFUNC_SEL_H
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#define ELF_IFUNC_SEL_H 1
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extern int global;
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static inline void *
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inhibit_stack_protector
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ifunc_sel (int (*f1) (void), int (*f2) (void), int (*f3) (void))
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{
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switch (global)
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{
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case 1:
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return f1;
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case -1:
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return f2;
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default:
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return f3;
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}
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}
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static inline void *
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inhibit_stack_protector
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ifunc_one (int (*f1) (void))
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{
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return f1;
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}
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#endif
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