diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 2004-02-08 18:03:51 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 2004-02-08 18:03:51 +0000 |
| commit | f9d4dbafe850675850558e2c8597b232b8be0e88 (patch) | |
| tree | c7db9cbea87fe13a78bd1aa5a591a820d663b9dc /lib/libm/arch/amd64/s_cos.S | |
| parent | d1b83f8bb6e1bc54b2b16eace08563acb5e968a0 (diff) | |
add libm parts for amd64; much from netbsd, integration by mickey.
Instead of mixing the i387 & xmm register components, we decide to
explicitly seperate them. libm is already confusing enough as it is,
thank you very much
Diffstat (limited to 'lib/libm/arch/amd64/s_cos.S')
| -rw-r--r-- | lib/libm/arch/amd64/s_cos.S | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/libm/arch/amd64/s_cos.S b/lib/libm/arch/amd64/s_cos.S new file mode 100644 index 00000000000..b70c5cb3069 --- /dev/null +++ b/lib/libm/arch/amd64/s_cos.S @@ -0,0 +1,31 @@ +/* + * Written by J.T. Conklin <jtc@NetBSD.org>. + * Public domain. + */ + +#include <machine/asm.h> + +#include "abi.h" + +RCSID("$NetBSD: s_cos.S,v 1.8 2003/07/26 19:25:01 salo Exp $") + +ENTRY(cos) + XMM_ONE_ARG_DOUBLE_PROLOGUE + fldl ARG_DOUBLE_ONE + fcos + fnstsw %ax + andw $0x400,%ax + jnz 1f + XMM_DOUBLE_EPILOGUE + ret +1: fldpi + fadd %st(0) + fxch %st(1) +2: fprem1 + fnstsw %ax + andw $0x400,%ax + jnz 2b + fstp %st(1) + fcos + XMM_DOUBLE_EPILOGUE + ret |