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Hardware stack protection is required by most distributions. See https://wiki.gentoo.org/wiki/Project:Hardened/GNU_stack_quickstart
35 lines
523 B
ArmAsm
35 lines
523 B
ArmAsm
/*
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* Written by:
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* J.T. Conklin (jtc@netbsd.org)
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* Public domain.
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*/
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#include <i387/bsd_asm.h>
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//__FBSDID("$FreeBSD: src/lib/msun/i387/s_tan.S,v 1.9 2011/01/07 16:13:12 kib Exp $")
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ENTRY(tan)
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fldl 4(%esp)
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fptan
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fnstsw %ax
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andw $0x400,%ax
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jnz 1f
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fstp %st(0)
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ret
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1: fldpi
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fadd %st(0)
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fxch %st(1)
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2: fprem1
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fstsw %ax
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andw $0x400,%ax
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jnz 2b
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fstp %st(1)
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fptan
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fstp %st(0)
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ret
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END(tan)
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/* Enable stack protection */
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#if defined(__linux__) && defined(__ELF__)
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.section .note.GNU-stack,"",%progbits
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#endif
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