/* longlong.h -- definitions for mixed size 32/64 bit arithmetic.
- Copyright (C) 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2004,
- 2005, 2007 Free Software Foundation, Inc.
+ Copyright (C) 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ Free Software Foundation, Inc.
- This definition file is free software; you can redistribute it
- and/or modify it under the terms of the GNU General Public
- License as published by the Free Software Foundation; either
- version 3, or (at your option) any later version.
-
- This definition file is distributed in the hope that it will be
- useful, but WITHOUT ANY WARRANTY; without even the implied
- warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- See the GNU General Public License for more details.
+ This file is part of the GNU C Library.
- You should have received a copy of the GNU General Public License
- along with this program; see the file COPYING3. If not see
- <http://www.gnu.org/licenses/>. */
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file into
+ combinations with other programs, and to distribute those
+ combinations without any restriction coming from the use of this
+ file. (The Lesser General Public License restrictions do apply in
+ other respects; for example, they cover modification of the file,
+ and distribution when not linked into a combine executable.)
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
+ MA 02110-1301, USA. */
/* You have to define the following before including this file:
#define UDWtype UDItype
#endif
-extern const UQItype __clz_tab[256];
+/* Used in glibc only. */
+#ifndef attribute_hidden
+#define attribute_hidden
+#endif
+
+extern const UQItype __clz_tab[256] attribute_hidden;
/* Define auxiliary asm macros.
#define UDIV_TIME 100
#endif /* __arm__ */
+#if defined(__arm__)
+/* Let gcc decide how best to implement count_leading_zeros. */
+#define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clz (X))
+#define COUNT_LEADING_ZEROS_0 32
+#endif
+
+#if defined (__CRIS__) && __CRIS_arch_version >= 3
+#define count_leading_zeros(COUNT, X) ((COUNT) = __builtin_clz (X))
+#if __CRIS_arch_version >= 8
+#define count_trailing_zeros(COUNT, X) ((COUNT) = __builtin_ctz (X))
+#endif
+#endif /* __CRIS__ */
+
#if defined (__hppa) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
__asm__ ("add %4,%5,%1\n\taddc %2,%3,%0" \
#if (defined (__i386__) || defined (__i486__)) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
- __asm__ ("addl %5,%1\n\tadcl %3,%0" \
+ __asm__ ("add{l} {%5,%1|%1,%5}\n\tadc{l} {%3,%0|%0,%3}" \
: "=r" ((USItype) (sh)), \
"=&r" ((USItype) (sl)) \
: "%0" ((USItype) (ah)), \
"%1" ((USItype) (al)), \
"g" ((USItype) (bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
- __asm__ ("subl %5,%1\n\tsbbl %3,%0" \
+ __asm__ ("sub{l} {%5,%1|%1,%5}\n\tsbb{l} {%3,%0|%0,%3}" \
: "=r" ((USItype) (sh)), \
"=&r" ((USItype) (sl)) \
: "0" ((USItype) (ah)), \
"1" ((USItype) (al)), \
"g" ((USItype) (bl)))
#define umul_ppmm(w1, w0, u, v) \
- __asm__ ("mull %3" \
+ __asm__ ("mul{l} %3" \
: "=a" ((USItype) (w0)), \
"=d" ((USItype) (w1)) \
: "%0" ((USItype) (u)), \
"rm" ((USItype) (v)))
#define udiv_qrnnd(q, r, n1, n0, dv) \
- __asm__ ("divl %4" \
+ __asm__ ("div{l} %4" \
: "=a" ((USItype) (q)), \
"=d" ((USItype) (r)) \
: "0" ((USItype) (n0)), \
#if (defined (__x86_64__) || defined (__i386__)) && W_TYPE_SIZE == 64
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
- __asm__ ("addq %5,%1\n\tadcq %3,%0" \
+ __asm__ ("add{q} {%5,%1|%1,%5}\n\tadc{q} {%3,%0|%0,%3}" \
: "=r" ((UDItype) (sh)), \
"=&r" ((UDItype) (sl)) \
: "%0" ((UDItype) (ah)), \
"%1" ((UDItype) (al)), \
"rme" ((UDItype) (bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
- __asm__ ("subq %5,%1\n\tsbbq %3,%0" \
+ __asm__ ("sub{q} {%5,%1|%1,%5}\n\tsbb{q} {%3,%0|%0,%3}" \
: "=r" ((UDItype) (sh)), \
"=&r" ((UDItype) (sl)) \
: "0" ((UDItype) (ah)), \
"1" ((UDItype) (al)), \
"rme" ((UDItype) (bl)))
#define umul_ppmm(w1, w0, u, v) \
- __asm__ ("mulq %3" \
+ __asm__ ("mul{q} %3" \
: "=a" ((UDItype) (w0)), \
"=d" ((UDItype) (w1)) \
: "%0" ((UDItype) (u)), \
"rm" ((UDItype) (v)))
#define udiv_qrnnd(q, r, n1, n0, dv) \
- __asm__ ("divq %4" \
+ __asm__ ("div{q} %4" \
: "=a" ((UDItype) (q)), \
"=d" ((UDItype) (r)) \
: "0" ((UDItype) (n0)), \
__w; })
#endif /* __i960__ */
+#if defined (__ia64) && W_TYPE_SIZE == 64
+/* This form encourages gcc (pre-release 3.4 at least) to emit predicated
+ "sub r=r,r" and "sub r=r,r,1", giving a 2 cycle latency. The generic
+ code using "al<bl" arithmetically comes out making an actual 0 or 1 in a
+ register, which takes an extra cycle. */
+#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
+ do { \
+ UWtype __x; \
+ __x = (al) - (bl); \
+ if ((al) < (bl)) \
+ (sh) = (ah) - (bh) - 1; \
+ else \
+ (sh) = (ah) - (bh); \
+ (sl) = __x; \
+ } while (0)
+
+/* Do both product parts in assembly, since that gives better code with
+ all gcc versions. Some callers will just use the upper part, and in
+ that situation we waste an instruction, but not any cycles. */
+#define umul_ppmm(ph, pl, m0, m1) \
+ __asm__ ("xma.hu %0 = %2, %3, f0\n\txma.l %1 = %2, %3, f0" \
+ : "=&f" (ph), "=f" (pl) \
+ : "f" (m0), "f" (m1))
+#define count_leading_zeros(count, x) \
+ do { \
+ UWtype _x = (x), _y, _a, _c; \
+ __asm__ ("mux1 %0 = %1, @rev" : "=r" (_y) : "r" (_x)); \
+ __asm__ ("czx1.l %0 = %1" : "=r" (_a) : "r" (-_y | _y)); \
+ _c = (_a - 1) << 3; \
+ _x >>= _c; \
+ if (_x >= 1 << 4) \
+ _x >>= 4, _c += 4; \
+ if (_x >= 1 << 2) \
+ _x >>= 2, _c += 2; \
+ _c += _x >> 1; \
+ (count) = W_TYPE_SIZE - 1 - _c; \
+ } while (0)
+/* similar to what gcc does for __builtin_ffs, but 0 based rather than 1
+ based, and we don't need a special case for x==0 here */
+#define count_trailing_zeros(count, x) \
+ do { \
+ UWtype __ctz_x = (x); \
+ __asm__ ("popcnt %0 = %1" \
+ : "=r" (count) \
+ : "r" ((__ctz_x-1) & ~__ctz_x)); \
+ } while (0)
+#define UMUL_TIME 14
+#endif
+
#if defined (__M32R__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
/* The cmp clears the condition bit. */ \
#endif /* __m88000__ */
#if defined (__mips__) && W_TYPE_SIZE == 32
-#define umul_ppmm(w1, w0, u, v) \
- __asm__ ("multu %2,%3" \
- : "=l" ((USItype) (w0)), \
- "=h" ((USItype) (w1)) \
- : "d" ((USItype) (u)), \
- "d" ((USItype) (v)))
+#define umul_ppmm(w1, w0, u, v) \
+ do { \
+ UDItype __x = (UDItype) (USItype) (u) * (USItype) (v); \
+ (w1) = (USItype) (__x >> 32); \
+ (w0) = (USItype) (__x); \
+ } while (0)
#define UMUL_TIME 10
#define UDIV_TIME 100
+
+#if (__mips == 32 || __mips == 64) && ! __mips16
+#define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clz (X))
+#define COUNT_LEADING_ZEROS_0 32
+#endif
#endif /* __mips__ */
#if defined (__ns32000__) && W_TYPE_SIZE == 32
" or r1,%0" \
: "=r" (q), "=&z" (r) \
: "1" (n1), "r" (n0), "rm" (d), "r" (&__udiv_qrnnd_16) \
- : "r1", "r2", "r4", "r5", "r6", "pr"); \
+ : "r1", "r2", "r4", "r5", "r6", "pr", "t"); \
} while (0)
#define UDIV_TIME 80
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
__asm__ ("clrt;subc %5,%1; subc %4,%0" \
: "=r" (sh), "=r" (sl) \
- : "0" (ah), "1" (al), "r" (bh), "r" (bl))
+ : "0" (ah), "1" (al), "r" (bh), "r" (bl) : "t")
#endif /* __sh__ */
#define count_trailing_zeros(COUNT, X) ((COUNT) = __builtin_ctz (X))
#endif /* __xtensa__ */
+#if defined xstormy16
+extern UHItype __stormy16_count_leading_zeros (UHItype);
+#define count_leading_zeros(count, x) \
+ do \
+ { \
+ UHItype size; \
+ \
+ /* We assume that W_TYPE_SIZE is a multiple of 16... */ \
+ for ((count) = 0, size = W_TYPE_SIZE; size; size -= 16) \
+ { \
+ UHItype c; \
+ \
+ c = __clzhi2 ((x) >> (size - 16)); \
+ (count) += c; \
+ if (c != 16) \
+ break; \
+ } \
+ } \
+ while (0)
+#define COUNT_LEADING_ZEROS_0 W_TYPE_SIZE
+#endif
+
#if defined (__z8000__) && W_TYPE_SIZE == 16
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
__asm__ ("add %H1,%H5\n\tadc %H0,%H3" \
OSDN Git Service
