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| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2013-12-04 18:17:22 +0200 |
|---|---|---|
| committer | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2013-12-04 18:17:22 +0200 |
| commit | 85bb0a98ea5add0296cbcc415d557eaa1f6bd294 (patch) | |
| tree | 5dd30f067e7989ae2335cc5a091f2796344accd2 /mpi | |
| parent | c56080c26186d25dec05f01831494c77d8d07e13 (diff) | |
| download | libgcrypt-85bb0a98ea5add0296cbcc415d557eaa1f6bd294.tar.gz | |
mpi: add inline assembly for x86-64
* mpi/longlong.h [__x86_64] (add_ssaaaa, sub_ddmmss, umul_ppmm)
(udiv_qrnnd, count_leading_zeros, count_trailing_zeros): New.
--
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Diffstat (limited to 'mpi')
| -rw-r--r-- | mpi/longlong.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/mpi/longlong.h b/mpi/longlong.h index 8dd8fe8d..4f33937f 100644 --- a/mpi/longlong.h +++ b/mpi/longlong.h @@ -555,6 +555,69 @@ extern USItype __udiv_qrnnd (); #endif #endif /* 80x86 */ +/*************************************** + *********** AMD64 / x86-64 ************ + ***************************************/ +#if defined(__x86_64) && W_TYPE_SIZE == 64 +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("addq %5,%1\n" \ + "adcq %3,%0" \ + : "=r" ((sh)), \ + "=&r" ((sl)) \ + : "0" ((UDItype)(ah)), \ + "g" ((UDItype)(bh)), \ + "1" ((UDItype)(al)), \ + "g" ((UDItype)(bl)) \ + __CLOBBER_CC) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + __asm__ ("subq %5,%1\n" \ + "sbbq %3,%0" \ + : "=r" ((sh)), \ + "=&r" ((sl)) \ + : "0" ((UDItype)(ah)), \ + "g" ((UDItype)(bh)), \ + "1" ((UDItype)(al)), \ + "g" ((UDItype)(bl)) \ + __CLOBBER_CC) +#define umul_ppmm(w1, w0, u, v) \ + __asm__ ("mulq %3" \ + : "=a" ((w0)), \ + "=d" ((w1)) \ + : "0" ((UDItype)(u)), \ + "rm" ((UDItype)(v)) \ + __CLOBBER_CC) +#define udiv_qrnnd(q, r, n1, n0, d) \ + __asm__ ("divq %4" \ + : "=a" ((q)), \ + "=d" ((r)) \ + : "0" ((UDItype)(n0)), \ + "1" ((UDItype)(n1)), \ + "rm" ((UDItype)(d)) \ + __CLOBBER_CC) +#define count_leading_zeros(count, x) \ + do { \ + UDItype __cbtmp; \ + __asm__ ("bsrq %1,%0" \ + : "=r" (__cbtmp) : "rm" ((UDItype)(x)) \ + __CLOBBER_CC); \ + (count) = __cbtmp ^ 63; \ + } while (0) +#define count_trailing_zeros(count, x) \ + do { \ + UDItype __cbtmp; \ + __asm__ ("bsfq %1,%0" \ + : "=r" (__cbtmp) : "rm" ((UDItype)(x)) \ + __CLOBBER_CC); \ + (count) = __cbtmp; \ + } while (0) +#ifndef UMUL_TIME +#define UMUL_TIME 40 +#endif +#ifndef UDIV_TIME +#define UDIV_TIME 40 +#endif +#endif /* __x86_64 */ + /*************************************** ************** I860 ***************** |