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524a8ef2ad
Add a hidden __stack_chk_fail_local alias to libc.so, and make sure that on targets which use __stack_chk_fail, this does not introduce a local PLT reference into libc.so.
20 lines
779 B
C
20 lines
779 B
C
/* Some compiler optimizations may transform loops into memset/memmove
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calls and without proper declaration it may generate PLT calls. */
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#if !defined __ASSEMBLER__ && IS_IN (libc) && defined SHARED
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asm ("memmove = __GI_memmove");
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asm ("memset = __GI_memset");
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asm ("memcpy = __GI_memcpy");
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/* Some targets do not use __stack_chk_fail_local. In libc.so,
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redirect __stack_chk_fail to a hidden reference
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__stack_chk_fail_local, to avoid the PLT reference.
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__stack_chk_fail itself is a global symbol, exported from libc.so,
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and cannot be made hidden. */
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# if IS_IN (libc) && defined SHARED && \
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defined STACK_PROTECTOR_LEVEL && STACK_PROTECTOR_LEVEL > 0
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asm (".hidden __stack_chk_fail_local\n"
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"__stack_chk_fail = __stack_chk_fail_local");
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# endif
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#endif
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