diff options
Diffstat (limited to 'stdlib')
| -rw-r--r-- | stdlib/longlong.h | 155 |
1 files changed, 150 insertions, 5 deletions
diff --git a/stdlib/longlong.h b/stdlib/longlong.h index e7d6099c7e..5937a48554 100644 --- a/stdlib/longlong.h +++ b/stdlib/longlong.h @@ -1,6 +1,7 @@ /* longlong.h -- definitions for mixed size 32/64 bit arithmetic. Copyright (C) 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, - 2002, 2003, 2004, 2005, 2006, 2009 Free Software Foundation, Inc. + 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 + Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -9,6 +10,15 @@ 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 @@ -16,8 +26,8 @@ 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, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ + Software Foundation, 51 Franklin Street, Fifth Floor, Boston, + MA 02110-1301, USA. */ /* You have to define the following before including this file: @@ -45,6 +55,11 @@ #define UDWtype UDItype #endif +/* Used in glibc only. */ +#ifndef attribute_hidden +#define attribute_hidden +#endif + extern const UQItype __clz_tab[256] attribute_hidden; /* Define auxiliary asm macros. @@ -303,6 +318,7 @@ UDItype __umulsidi3 (USItype, USItype); #endif #if (defined (__i370__) || defined (__s390__) || defined (__mvs__)) && W_TYPE_SIZE == 32 +#if !defined (__zarch__) #define smul_ppmm(xh, xl, m0, m1) \ do { \ union {DItype __ll; \ @@ -324,6 +340,28 @@ UDItype __umulsidi3 (USItype, USItype); : "0" (__x.__ll), "r" (d)); \ (q) = __x.__i.__l; (r) = __x.__i.__h; \ } while (0) +#else +#define smul_ppmm(xh, xl, m0, m1) \ + do { \ + register SItype r0 __asm__ ("0"); \ + register SItype r1 __asm__ ("1") = m0; \ + \ + __asm__ ("mr\t%%r0,%3" \ + : "=r" (r0), "=r" (r1) \ + : "r" (r1), "r" (m1)); \ + (xh) = r1; (xl) = r0; \ + } while (0) +#define sdiv_qrnnd(q, r, n1, n0, d) \ + do { \ + register SItype r0 __asm__ ("0") = n0; \ + register SItype r1 __asm__ ("1") = n1; \ + \ + __asm__ ("dr\t%%r0,%3" \ + : "=r" (r0), "=r" (r1) \ + : "r" (r0), "r" (r1), "r" (d)); \ + (q) = r0; (r) = r1; \ + } while (0) +#endif /* __zarch__ */ #endif #if (defined (__i386__) || defined (__i486__)) && W_TYPE_SIZE == 32 @@ -417,6 +455,55 @@ UDItype __umulsidi3 (USItype, USItype); __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. */ \ @@ -631,6 +718,43 @@ UDItype __umulsidi3 (USItype, USItype); #endif /* __mc88110__ */ #endif /* __m88000__ */ +#if defined (__mn10300__) +# if defined (__AM33__) +# define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clz (X)) +# define umul_ppmm(w1, w0, u, v) \ + asm("mulu %3,%2,%1,%0" : "=r"(w0), "=r"(w1) : "r"(u), "r"(v)) +# define smul_ppmm(w1, w0, u, v) \ + asm("mul %3,%2,%1,%0" : "=r"(w0), "=r"(w1) : "r"(u), "r"(v)) +# else +# define umul_ppmm(w1, w0, u, v) \ + asm("nop; nop; mulu %3,%0" : "=d"(w0), "=z"(w1) : "%0"(u), "d"(v)) +# define smul_ppmm(w1, w0, u, v) \ + asm("nop; nop; mul %3,%0" : "=d"(w0), "=z"(w1) : "%0"(u), "d"(v)) +# endif +# define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + do { \ + DWunion __s, __a, __b; \ + __a.s.low = (al); __a.s.high = (ah); \ + __b.s.low = (bl); __b.s.high = (bh); \ + __s.ll = __a.ll + __b.ll; \ + (sl) = __s.s.low; (sh) = __s.s.high; \ + } while (0) +# define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + do { \ + DWunion __s, __a, __b; \ + __a.s.low = (al); __a.s.high = (ah); \ + __b.s.low = (bl); __b.s.high = (bh); \ + __s.ll = __a.ll - __b.ll; \ + (sl) = __s.s.low; (sh) = __s.s.high; \ + } while (0) +# define udiv_qrnnd(q, r, nh, nl, d) \ + asm("divu %2,%0" : "=D"(q), "=z"(r) : "D"(d), "0"(nl), "1"(nh)) +# define sdiv_qrnnd(q, r, nh, nl, d) \ + asm("div %2,%0" : "=D"(q), "=z"(r) : "D"(d), "0"(nl), "1"(nh)) +# define UMUL_TIME 3 +# define UDIV_TIME 38 +#endif + #if defined (__mips__) && W_TYPE_SIZE == 32 #define umul_ppmm(w1, w0, u, v) \ do { \ @@ -926,8 +1050,7 @@ UDItype __umulsidi3 (USItype, USItype); #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) \ - : "t") + : "0" (ah), "1" (al), "r" (bh), "r" (bl) : "t") #endif /* __sh__ */ @@ -1261,6 +1384,28 @@ UDItype __umulsidi3 (USItype, USItype); #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" \ |