193 lines
6.9 KiB
C
193 lines
6.9 KiB
C
/* longlong.h -- definitions for mixed size 32/64 bit arithmetic.
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Copyright 1991, 1992, 1993, 1994, 1996, 1997, 1999, 2000, 2001, 2002, 2003,
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2004, 2005 Free Software Foundation, Inc.
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This file is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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This file is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this file; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#if defined (__GNUC__)
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#define __CLOBBER_CC : "cc"
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#define __AND_CLOBBER_CC , "cc"
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#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
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__asm__ ("addcc %r4,%5,%1\n\taddx %r2,%3,%0" \
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: "=r" (sh), "=&r" (sl) \
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: "rJ" (ah), "rI" (bh),"%rJ" (al), "rI" (bl) \
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__CLOBBER_CC)
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#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
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__asm__ ("subcc %r4,%5,%1\n\tsubx %r2,%3,%0" \
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: "=r" (sh), "=&r" (sl) \
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: "rJ" (ah), "rI" (bh), "rJ" (al), "rI" (bl) \
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__CLOBBER_CC)
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/* FIXME: When gcc -mcpu=v9 is used on solaris, gcc/config/sol2-sld-64.h
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doesn't define anything to indicate that to us, it only sets __sparcv8. */
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#if defined (__sparc_v9__) || defined (__sparcv9)
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/* Perhaps we should use floating-point operations here? */
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#if 0
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/* Triggers a bug making mpz/tests/t-gcd.c fail.
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Perhaps we simply need explicitly zero-extend the inputs? */
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#define umul_ppmm(w1, w0, u, v) \
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__asm__ ("mulx %2,%3,%%g1; srl %%g1,0,%1; srlx %%g1,32,%0" : \
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"=r" (w1), "=r" (w0) : "r" (u), "r" (v) : "g1")
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#else
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/* Use v8 umul until above bug is fixed. */
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#define umul_ppmm(w1, w0, u, v) \
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__asm__ ("umul %2,%3,%1;rd %%y,%0" : "=r" (w1), "=r" (w0) : "r" (u), "r" (v))
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#endif
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/* Use a plain v8 divide for v9. */
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#define udiv_qrnnd(q, r, n1, n0, d) \
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do { \
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USItype __q; \
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__asm__ ("mov %1,%%y;nop;nop;nop;udiv %2,%3,%0" \
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: "=r" (__q) : "r" (n1), "r" (n0), "r" (d)); \
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(r) = (n0) - __q * (d); \
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(q) = __q; \
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} while (0)
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#else
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#if defined (__sparc_v8__) /* gcc normal */ \
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|| defined (__sparcv8) /* gcc solaris */
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/* Don't match immediate range because, 1) it is not often useful,
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2) the 'I' flag thinks of the range as a 13 bit signed interval,
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while we want to match a 13 bit interval, sign extended to 32 bits,
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but INTERPRETED AS UNSIGNED. */
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#define umul_ppmm(w1, w0, u, v) \
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__asm__ ("umul %2,%3,%1;rd %%y,%0" : "=r" (w1), "=r" (w0) : "r" (u), "r" (v))
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#define udiv_qrnnd(q, r, n1, n0, d) \
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do { \
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USItype __q; \
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__asm__ ("mov %1,%%y;nop;nop;nop;udiv %2,%3,%0" \
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: "=r" (__q) : "r" (n1), "r" (n0), "r" (d)); \
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(r) = (n0) - __q * (d); \
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(q) = __q; \
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} while (0)
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#else /* ! __sparc_v8__ */
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#if defined (__sparclite__)
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/* This has hardware multiply but not divide. It also has two additional
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instructions scan (ffs from high bit) and divscc. */
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#define umul_ppmm(w1, w0, u, v) \
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__asm__ ("umul %2,%3,%1;rd %%y,%0" : "=r" (w1), "=r" (w0) : "r" (u), "r" (v))
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#define udiv_qrnnd(q, r, n1, n0, d) \
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__asm__ ("! Inlined udiv_qrnnd\n" \
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" wr %%g0,%2,%%y ! Not a delayed write for sparclite\n" \
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" tst %%g0\n" \
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" divscc %3,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%%g1\n" \
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" divscc %%g1,%4,%0\n" \
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" rd %%y,%1\n" \
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" bl,a 1f\n" \
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" add %1,%4,%1\n" \
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"1: ! End of inline udiv_qrnnd" \
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: "=r" (q), "=r" (r) : "r" (n1), "r" (n0), "rI" (d) \
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: "%g1" __AND_CLOBBER_CC)
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#define count_leading_zeros(count, x) \
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__asm__ ("scan %1,1,%0" : "=r" (count) : "r" (x))
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/* Early sparclites return 63 for an argument of 0, but they warn that future
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implementations might change this. Therefore, leave COUNT_LEADING_ZEROS_0
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undefined. */
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#endif /* __sparclite__ */
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#endif /* __sparc_v8__ */
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#endif /* __sparc_v9__ */
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/* Default to sparc v7 versions of umul_ppmm and udiv_qrnnd. */
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#ifndef umul_ppmm
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#define umul_ppmm(w1, w0, u, v) \
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__asm__ ("! Inlined umul_ppmm\n" \
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" wr %%g0,%2,%%y ! SPARC has 0-3 delay insn after a wr\n" \
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" sra %3,31,%%g2 ! Don't move this insn\n" \
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" and %2,%%g2,%%g2 ! Don't move this insn\n" \
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" andcc %%g0,0,%%g1 ! Don't move this insn\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,%3,%%g1\n" \
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" mulscc %%g1,0,%%g1\n" \
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" add %%g1,%%g2,%0\n" \
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" rd %%y,%1" \
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: "=r" (w1), "=r" (w0) : "%rI" (u), "r" (v) \
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: "%g1", "%g2" __AND_CLOBBER_CC)
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#endif
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#ifndef udiv_qrnnd
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#ifndef LONGLONG_STANDALONE
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#define udiv_qrnnd(q, r, n1, n0, d) \
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do { UWtype __r; \
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(q) = __MPN(udiv_qrnnd) (&__r, (n1), (n0), (d)); \
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(r) = __r; \
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} while (0)
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extern UWtype __MPN(udiv_qrnnd) _PROTO ((UWtype *, UWtype, UWtype, UWtype));
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#endif /* LONGLONG_STANDALONE */
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#endif /* udiv_qrnnd */
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#endif
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