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63 lines
1.3 KiB
ArmAsm
63 lines
1.3 KiB
ArmAsm
/*
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* Written by J.T. Conklin <jtc@netbsd.org>.
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* Public domain.
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*
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* Changes for long double by Ulrich Drepper <drepper@cygnus.com>
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*
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* Removed header file dependency for use in libmingwex.a by
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* Danny Smith <dannysmith@users.sourceforge.net>
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*/
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#include <_mingw_mac.h>
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.file "floorf.S"
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.text
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#ifdef _WIN64
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.align 8
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#else
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.align 4
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#endif
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.globl __MINGW_USYMBOL(floorf)
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.def __MINGW_USYMBOL(floorf); .scl 2; .type 32; .endef
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__MINGW_USYMBOL(floorf):
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#ifdef _WIN64
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subq $24,%rsp
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movss %xmm0,8(%rsp)
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flds 8(%rsp)
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fstcw 4(%rsp) /* store fpu control word */
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movl $0x400,%edx /* round towards -oo */
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orl 4(%rsp),%edx
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andl $0xf7ff,%edx
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movl %edx,(%rsp)
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fldcw (%rsp) /* load modified control word */
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frndint /* round */
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fldcw 4(%rsp) /* restore original control word */
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fstps 8(%rsp)
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movss 8(%rsp),%xmm0
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addq $24,%rsp
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ret
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#else
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flds 4(%esp)
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subl $8,%esp
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fstcw 4(%esp) /* store fpu control word */
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/* We use here %edx although only the low 1 bits are defined.
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But none of the operations should care and they are faster
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than the 16 bit operations. */
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movl $0x400,%edx /* round towards -oo */
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orl 4(%esp),%edx
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andl $0xf7ff,%edx
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movl %edx,(%esp)
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fldcw (%esp) /* load modified control word */
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frndint /* round */
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fldcw 4(%esp) /* restore original control word */
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addl $8,%esp
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ret
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#endif
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