/* More subroutines needed by GCC output code on some machines. */
/* Compile this one with gcc. */
/* Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+ 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
This file is part of GCC.
DWtype
__negdi2 (DWtype u)
{
- DWunion w;
- DWunion uu;
-
- uu.ll = u;
-
- w.s.low = -uu.s.low;
- w.s.high = -uu.s.high - ((UWtype) w.s.low > 0);
+ const DWunion uu = {.ll = u};
+ const DWunion w = { {.low = -uu.s.low,
+ .high = -uu.s.high - ((UWtype) -uu.s.low > 0) } };
return w.ll;
}
#ifdef L_addvsi3
Wtype
-__addvsi3 (Wtype a, Wtype b)
+__addvSI3 (Wtype a, Wtype b)
{
- Wtype w;
+ const Wtype w = a + b;
+
+ if (b >= 0 ? w < a : w > a)
+ abort ();
- w = a + b;
+ return w;
+}
+#ifdef COMPAT_SIMODE_TRAPPING_ARITHMETIC
+SItype
+__addvsi3 (SItype a, SItype b)
+{
+ const SItype w = a + b;
if (b >= 0 ? w < a : w > a)
abort ();
return w;
}
+#endif /* COMPAT_SIMODE_TRAPPING_ARITHMETIC */
#endif
\f
#ifdef L_addvdi3
DWtype
-__addvdi3 (DWtype a, DWtype b)
+__addvDI3 (DWtype a, DWtype b)
{
- DWtype w;
-
- w = a + b;
+ const DWtype w = a + b;
if (b >= 0 ? w < a : w > a)
abort ();
\f
#ifdef L_subvsi3
Wtype
-__subvsi3 (Wtype a, Wtype b)
+__subvSI3 (Wtype a, Wtype b)
{
-#ifdef L_addvsi3
- return __addvsi3 (a, (-b));
-#else
- DWtype w;
+ const Wtype w = a - b;
+
+ if (b >= 0 ? w > a : w < a)
+ abort ();
- w = a - b;
+ return w;
+}
+#ifdef COMPAT_SIMODE_TRAPPING_ARITHMETIC
+SItype
+__subvsi3 (SItype a, SItype b)
+{
+ const SItype w = a - b;
if (b >= 0 ? w > a : w < a)
abort ();
return w;
-#endif
}
+#endif /* COMPAT_SIMODE_TRAPPING_ARITHMETIC */
#endif
\f
#ifdef L_subvdi3
DWtype
-__subvdi3 (DWtype a, DWtype b)
+__subvDI3 (DWtype a, DWtype b)
{
-#ifdef L_addvdi3
- return __addvdi3 (a, (-b));
-#else
- DWtype w;
-
- w = a - b;
+ const DWtype w = a - b;
if (b >= 0 ? w > a : w < a)
abort ();
return w;
-#endif
}
#endif
\f
#ifdef L_mulvsi3
+#define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT)
Wtype
-__mulvsi3 (Wtype a, Wtype b)
+__mulvSI3 (Wtype a, Wtype b)
{
- DWtype w;
+ const DWtype w = (DWtype) a * (DWtype) b;
- w = a * b;
+ if ((Wtype) (w >> WORD_SIZE) != (Wtype) w >> (WORD_SIZE - 1))
+ abort ();
- if (((a >= 0) == (b >= 0)) ? w < 0 : w > 0)
+ return w;
+}
+#ifdef COMPAT_SIMODE_TRAPPING_ARITHMETIC
+#undef WORD_SIZE
+#define WORD_SIZE (sizeof (SItype) * BITS_PER_UNIT)
+SItype
+__mulvsi3 (SItype a, SItype b)
+{
+ const DItype w = (DItype) a * (DItype) b;
+
+ if ((SItype) (w >> WORD_SIZE) != (SItype) w >> (WORD_SIZE-1))
abort ();
return w;
}
+#endif /* COMPAT_SIMODE_TRAPPING_ARITHMETIC */
#endif
\f
#ifdef L_negvsi2
Wtype
-__negvsi2 (Wtype a)
+__negvSI2 (Wtype a)
{
- Wtype w;
+ const Wtype w = -a;
- w = -a;
+ if (a >= 0 ? w > 0 : w < 0)
+ abort ();
+
+ return w;
+}
+#ifdef COMPAT_SIMODE_TRAPPING_ARITHMETIC
+SItype
+__negvsi2 (SItype a)
+{
+ const SItype w = -a;
if (a >= 0 ? w > 0 : w < 0)
abort ();
return w;
}
+#endif /* COMPAT_SIMODE_TRAPPING_ARITHMETIC */
#endif
\f
#ifdef L_negvdi2
DWtype
-__negvdi2 (DWtype a)
+__negvDI2 (DWtype a)
{
- DWtype w;
-
- w = -a;
+ const DWtype w = -a;
if (a >= 0 ? w > 0 : w < 0)
abort ();
\f
#ifdef L_absvsi2
Wtype
-__absvsi2 (Wtype a)
+__absvSI2 (Wtype a)
{
Wtype w = a;
if (a < 0)
#ifdef L_negvsi2
+ w = __negvSI2 (a);
+#else
+ w = -a;
+
+ if (w < 0)
+ abort ();
+#endif
+
+ return w;
+}
+#ifdef COMPAT_SIMODE_TRAPPING_ARITHMETIC
+SItype
+__absvsi2 (SItype a)
+{
+ SItype w = a;
+
+ if (a < 0)
+#ifdef L_negvsi2
w = __negvsi2 (a);
#else
w = -a;
return w;
}
+#endif /* COMPAT_SIMODE_TRAPPING_ARITHMETIC */
#endif
\f
#ifdef L_absvdi2
DWtype
-__absvdi2 (DWtype a)
+__absvDI2 (DWtype a)
{
DWtype w = a;
if (a < 0)
-#ifdef L_negvsi2
- w = __negvsi2 (a);
+#ifdef L_negvdi2
+ w = __negvDI2 (a);
#else
w = -a;
#endif
\f
#ifdef L_mulvdi3
+#define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT)
DWtype
-__mulvdi3 (DWtype u, DWtype v)
+__mulvDI3 (DWtype u, DWtype v)
{
- DWtype w;
-
- w = u * v;
+ /* The unchecked multiplication needs 3 Wtype x Wtype multiplications,
+ but the checked multiplication needs only two. */
+ const DWunion uu = {.ll = u};
+ const DWunion vv = {.ll = v};
- if (((u >= 0) == (v >= 0)) ? w < 0 : w > 0)
- abort ();
+ if (__builtin_expect (uu.s.high == uu.s.low >> (WORD_SIZE - 1), 1))
+ {
+ /* u fits in a single Wtype. */
+ if (__builtin_expect (vv.s.high == vv.s.low >> (WORD_SIZE - 1), 1))
+ {
+ /* v fits in a single Wtype as well. */
+ /* A single multiplication. No overflow risk. */
+ return (DWtype) uu.s.low * (DWtype) vv.s.low;
+ }
+ else
+ {
+ /* Two multiplications. */
+ DWunion w0 = {.ll = (UDWtype) (UWtype) uu.s.low
+ * (UDWtype) (UWtype) vv.s.low};
+ DWunion w1 = {.ll = (UDWtype) (UWtype) uu.s.low
+ * (UDWtype) (UWtype) vv.s.high};
+
+ if (vv.s.high < 0)
+ w1.s.high -= uu.s.low;
+ if (uu.s.low < 0)
+ w1.ll -= vv.ll;
+ w1.ll += (UWtype) w0.s.high;
+ if (__builtin_expect (w1.s.high == w1.s.low >> (WORD_SIZE - 1), 1))
+ {
+ w0.s.high = w1.s.low;
+ return w0.ll;
+ }
+ }
+ }
+ else
+ {
+ if (__builtin_expect (vv.s.high == vv.s.low >> (WORD_SIZE - 1), 1))
+ {
+ /* v fits into a single Wtype. */
+ /* Two multiplications. */
+ DWunion w0 = {.ll = (UDWtype) (UWtype) uu.s.low
+ * (UDWtype) (UWtype) vv.s.low};
+ DWunion w1 = {.ll = (UDWtype) (UWtype) uu.s.high
+ * (UDWtype) (UWtype) vv.s.low};
+
+ if (uu.s.high < 0)
+ w1.s.high -= vv.s.low;
+ if (vv.s.low < 0)
+ w1.ll -= uu.ll;
+ w1.ll += (UWtype) w0.s.high;
+ if (__builtin_expect (w1.s.high == w1.s.low >> (WORD_SIZE - 1), 1))
+ {
+ w0.s.high = w1.s.low;
+ return w0.ll;
+ }
+ }
+ else
+ {
+ /* A few sign checks and a single multiplication. */
+ if (uu.s.high >= 0)
+ {
+ if (vv.s.high >= 0)
+ {
+ if (uu.s.high == 0 && vv.s.high == 0)
+ {
+ const DWtype w = (UDWtype) (UWtype) uu.s.low
+ * (UDWtype) (UWtype) vv.s.low;
+ if (__builtin_expect (w >= 0, 1))
+ return w;
+ }
+ }
+ else
+ {
+ if (uu.s.high == 0 && vv.s.high == (Wtype) -1)
+ {
+ DWunion ww = {.ll = (UDWtype) (UWtype) uu.s.low
+ * (UDWtype) (UWtype) vv.s.low};
+
+ ww.s.high -= uu.s.low;
+ if (__builtin_expect (ww.s.high < 0, 1))
+ return ww.ll;
+ }
+ }
+ }
+ else
+ {
+ if (vv.s.high >= 0)
+ {
+ if (uu.s.high == (Wtype) -1 && vv.s.high == 0)
+ {
+ DWunion ww = {.ll = (UDWtype) (UWtype) uu.s.low
+ * (UDWtype) (UWtype) vv.s.low};
+
+ ww.s.high -= vv.s.low;
+ if (__builtin_expect (ww.s.high < 0, 1))
+ return ww.ll;
+ }
+ }
+ else
+ {
+ if (uu.s.high == (Wtype) -1 && vv.s.high == (Wtype) - 1)
+ {
+ DWunion ww = {.ll = (UDWtype) (UWtype) uu.s.low
+ * (UDWtype) (UWtype) vv.s.low};
+
+ ww.s.high -= uu.s.low;
+ ww.s.high -= vv.s.low;
+ if (__builtin_expect (ww.s.high >= 0, 1))
+ return ww.ll;
+ }
+ }
+ }
+ }
+ }
- return w;
+ /* Overflow. */
+ abort ();
}
#endif
\f
DWtype
__lshrdi3 (DWtype u, word_type b)
{
- DWunion w;
- word_type bm;
- DWunion uu;
-
if (b == 0)
return u;
- uu.ll = u;
+ const DWunion uu = {.ll = u};
+ const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b;
+ DWunion w;
- bm = (sizeof (Wtype) * BITS_PER_UNIT) - b;
if (bm <= 0)
{
w.s.high = 0;
}
else
{
- UWtype carries = (UWtype) uu.s.high << bm;
+ const UWtype carries = (UWtype) uu.s.high << bm;
w.s.high = (UWtype) uu.s.high >> b;
w.s.low = ((UWtype) uu.s.low >> b) | carries;
DWtype
__ashldi3 (DWtype u, word_type b)
{
- DWunion w;
- word_type bm;
- DWunion uu;
-
if (b == 0)
return u;
- uu.ll = u;
+ const DWunion uu = {.ll = u};
+ const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b;
+ DWunion w;
- bm = (sizeof (Wtype) * BITS_PER_UNIT) - b;
if (bm <= 0)
{
w.s.low = 0;
}
else
{
- UWtype carries = (UWtype) uu.s.low >> bm;
+ const UWtype carries = (UWtype) uu.s.low >> bm;
w.s.low = (UWtype) uu.s.low << b;
w.s.high = ((UWtype) uu.s.high << b) | carries;
DWtype
__ashrdi3 (DWtype u, word_type b)
{
- DWunion w;
- word_type bm;
- DWunion uu;
-
if (b == 0)
return u;
- uu.ll = u;
+ const DWunion uu = {.ll = u};
+ const word_type bm = (sizeof (Wtype) * BITS_PER_UNIT) - b;
+ DWunion w;
- bm = (sizeof (Wtype) * BITS_PER_UNIT) - b;
if (bm <= 0)
{
/* w.s.high = 1..1 or 0..0 */
}
else
{
- UWtype carries = (UWtype) uu.s.high << bm;
+ const UWtype carries = (UWtype) uu.s.high << bm;
w.s.high = uu.s.high >> b;
w.s.low = ((UWtype) uu.s.low >> b) | carries;
\f
#ifdef L_ffssi2
#undef int
-extern int __ffsSI2 (UWtype u);
int
__ffsSI2 (UWtype u)
{
\f
#ifdef L_ffsdi2
#undef int
-extern int __ffsDI2 (DWtype u);
int
__ffsDI2 (DWtype u)
{
- DWunion uu;
+ const DWunion uu = {.ll = u};
UWtype word, count, add;
- uu.ll = u;
if (uu.s.low != 0)
word = uu.s.low, add = 0;
else if (uu.s.high != 0)
DWtype
__muldi3 (DWtype u, DWtype v)
{
- DWunion w;
- DWunion uu, vv;
+ const DWunion uu = {.ll = u};
+ const DWunion vv = {.ll = v};
+ DWunion w = {.ll = __umulsidi3 (uu.s.low, vv.s.low)};
- uu.ll = u,
- vv.ll = v;
-
- w.ll = __umulsidi3 (uu.s.low, vv.s.low);
w.s.high += ((UWtype) uu.s.low * (UWtype) vv.s.high
+ (UWtype) uu.s.high * (UWtype) vv.s.low);
{
if (a1 < d - a1 - (a0 >> (W_TYPE_SIZE - 1)))
{
- /* dividend, divisor, and quotient are nonnegative */
+ /* Dividend, divisor, and quotient are nonnegative. */
sdiv_qrnnd (q, r, a1, a0, d);
}
else
{
- /* Compute c1*2^32 + c0 = a1*2^32 + a0 - 2^31*d */
+ /* Compute c1*2^32 + c0 = a1*2^32 + a0 - 2^31*d. */
sub_ddmmss (c1, c0, a1, a0, d >> 1, d << (W_TYPE_SIZE - 1));
- /* Divide (c1*2^32 + c0) by d */
+ /* Divide (c1*2^32 + c0) by d. */
sdiv_qrnnd (q, r, c1, c0, d);
- /* Add 2^31 to quotient */
+ /* Add 2^31 to quotient. */
q += (UWtype) 1 << (W_TYPE_SIZE - 1);
}
}
\f
#ifdef L_clzsi2
#undef int
-extern int __clzSI2 (UWtype x);
int
__clzSI2 (UWtype x)
{
\f
#ifdef L_clzdi2
#undef int
-extern int __clzDI2 (UDWtype x);
int
__clzDI2 (UDWtype x)
{
- DWunion uu;
+ const DWunion uu = {.ll = x};
UWtype word;
Wtype ret, add;
- uu.ll = x;
if (uu.s.high)
word = uu.s.high, add = 0;
else
\f
#ifdef L_ctzsi2
#undef int
-extern int __ctzSI2 (UWtype x);
int
__ctzSI2 (UWtype x)
{
\f
#ifdef L_ctzdi2
#undef int
-extern int __ctzDI2 (UDWtype x);
int
__ctzDI2 (UDWtype x)
{
- DWunion uu;
+ const DWunion uu = {.ll = x};
UWtype word;
Wtype ret, add;
- uu.ll = x;
if (uu.s.low)
word = uu.s.low, add = 0;
else
\f
#ifdef L_popcountsi2
#undef int
-extern int __popcountSI2 (UWtype x);
int
__popcountSI2 (UWtype x)
{
\f
#ifdef L_popcountdi2
#undef int
-extern int __popcountDI2 (UDWtype x);
int
__popcountDI2 (UDWtype x)
{
\f
#ifdef L_paritysi2
#undef int
-extern int __paritySI2 (UWtype x);
int
__paritySI2 (UWtype x)
{
\f
#ifdef L_paritydi2
#undef int
-extern int __parityDI2 (UDWtype x);
int
__parityDI2 (UDWtype x)
{
- DWunion uu;
- UWtype nx;
-
- uu.ll = x;
- nx = uu.s.low ^ uu.s.high;
+ const DWunion uu = {.ll = x};
+ UWtype nx = uu.s.low ^ uu.s.high;
#if W_TYPE_SIZE > 64
# error "fill out the table"
UDWtype
__udivmoddi4 (UDWtype n, UDWtype d, UDWtype *rp)
{
- DWunion ww;
- DWunion nn, dd;
+ const DWunion nn = {.ll = n};
+ const DWunion dd = {.ll = d};
DWunion rr;
UWtype d0, d1, n0, n1, n2;
UWtype q0, q1;
UWtype b, bm;
- nn.ll = n;
- dd.ll = d;
-
d0 = dd.s.low;
d1 = dd.s.high;
n0 = nn.s.low;
}
}
- ww.s.low = q0;
- ww.s.high = q1;
+ const DWunion ww = {{.low = q0, .high = q1}};
return ww.ll;
}
#endif
__divdi3 (DWtype u, DWtype v)
{
word_type c = 0;
- DWunion uu, vv;
+ DWunion uu = {.ll = u};
+ DWunion vv = {.ll = v};
DWtype w;
- uu.ll = u;
- vv.ll = v;
-
if (uu.s.high < 0)
c = ~c,
uu.ll = -uu.ll;
__moddi3 (DWtype u, DWtype v)
{
word_type c = 0;
- DWunion uu, vv;
+ DWunion uu = {.ll = u};
+ DWunion vv = {.ll = v};
DWtype w;
- uu.ll = u;
- vv.ll = v;
-
if (uu.s.high < 0)
c = ~c,
uu.ll = -uu.ll;
if (vv.s.high < 0)
vv.ll = -vv.ll;
- (void) __udivmoddi4 (uu.ll, vv.ll, &w);
+ (void) __udivmoddi4 (uu.ll, vv.ll, (UDWtype*)&w);
if (c)
w = -w;
word_type
__cmpdi2 (DWtype a, DWtype b)
{
- DWunion au, bu;
-
- au.ll = a, bu.ll = b;
+ const DWunion au = {.ll = a};
+ const DWunion bu = {.ll = b};
if (au.s.high < bu.s.high)
return 0;
word_type
__ucmpdi2 (DWtype a, DWtype b)
{
- DWunion au, bu;
-
- au.ll = a, bu.ll = b;
+ const DWunion au = {.ll = a};
+ const DWunion bu = {.ll = b};
if ((UWtype) au.s.high < (UWtype) bu.s.high)
return 0;
DWtype
__fixunstfDI (TFtype a)
{
- TFtype b;
- UDWtype v;
-
if (a < 0)
return 0;
/* Compute high word of result, as a flonum. */
- b = (a / HIGH_WORD_COEFF);
+ const TFtype b = (a / HIGH_WORD_COEFF);
/* Convert that to fixed (but not to DWtype!),
and shift it into the high word. */
- v = (UWtype) b;
+ UDWtype v = (UWtype) b;
v <<= WORD_SIZE;
/* Remove high part from the TFtype, leaving the low part as flonum. */
a -= (TFtype)v;
}
#endif
-#if defined(L_fixunsxfdi) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96)
+#if defined(L_fixunsxfdi) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 80)
#define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT)
#define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE)
DWtype
__fixunsxfDI (XFtype a)
{
- XFtype b;
- UDWtype v;
-
if (a < 0)
return 0;
/* Compute high word of result, as a flonum. */
- b = (a / HIGH_WORD_COEFF);
+ const XFtype b = (a / HIGH_WORD_COEFF);
/* Convert that to fixed (but not to DWtype!),
and shift it into the high word. */
- v = (UWtype) b;
+ UDWtype v = (UWtype) b;
v <<= WORD_SIZE;
/* Remove high part from the XFtype, leaving the low part as flonum. */
a -= (XFtype)v;
}
#endif
-#if defined(L_fixxfdi) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96)
+#if defined(L_fixxfdi) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 80)
DWtype
__fixxfdi (XFtype a)
{
DWtype
__fixunsdfDI (DFtype a)
{
- UWtype hi, lo;
-
/* Get high part of result. The division here will just moves the radix
point and will not cause any rounding. Then the conversion to integral
type chops result as desired. */
- hi = a / HIGH_WORD_COEFF;
+ const UWtype hi = a / HIGH_WORD_COEFF;
/* Get low part of result. Convert `hi' to floating type and scale it back,
then subtract this from the number being converted. This leaves the low
part. Convert that to integral type. */
- lo = (a - ((DFtype) hi) * HIGH_WORD_COEFF);
+ const UWtype lo = (a - ((DFtype) hi) * HIGH_WORD_COEFF);
/* Assemble result from the two parts. */
return ((UDWtype) hi << WORD_SIZE) | lo;
/* Convert the SFtype to a DFtype, because that is surely not going
to lose any bits. Some day someone else can write a faster version
that avoids converting to DFtype, and verify it really works right. */
- DFtype a = original_a;
- UWtype hi, lo;
+ const DFtype a = original_a;
/* Get high part of result. The division here will just moves the radix
point and will not cause any rounding. Then the conversion to integral
type chops result as desired. */
- hi = a / HIGH_WORD_COEFF;
+ const UWtype hi = a / HIGH_WORD_COEFF;
/* Get low part of result. Convert `hi' to floating type and scale it back,
then subtract this from the number being converted. This leaves the low
part. Convert that to integral type. */
- lo = (a - ((DFtype) hi) * HIGH_WORD_COEFF);
+ const UWtype lo = (a - ((DFtype) hi) * HIGH_WORD_COEFF);
/* Assemble result from the two parts. */
return ((UDWtype) hi << WORD_SIZE) | lo;
}
#endif
-#if defined(L_floatdixf) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96)
+#if defined(L_floatdixf) && (LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 80)
#define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT)
#define HIGH_HALFWORD_COEFF (((UDWtype) 1) << (WORD_SIZE / 2))
#define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE)
XFtype
__floatdixf (DWtype u)
{
- XFtype d;
-
- d = (Wtype) (u >> WORD_SIZE);
+ XFtype d = (Wtype) (u >> WORD_SIZE);
d *= HIGH_HALFWORD_COEFF;
d *= HIGH_HALFWORD_COEFF;
d += (UWtype) (u & (HIGH_WORD_COEFF - 1));
TFtype
__floatditf (DWtype u)
{
- TFtype d;
-
- d = (Wtype) (u >> WORD_SIZE);
+ TFtype d = (Wtype) (u >> WORD_SIZE);
d *= HIGH_HALFWORD_COEFF;
d *= HIGH_HALFWORD_COEFF;
d += (UWtype) (u & (HIGH_WORD_COEFF - 1));
DFtype
__floatdidf (DWtype u)
{
- DFtype d;
-
- d = (Wtype) (u >> WORD_SIZE);
+ DFtype d = (Wtype) (u >> WORD_SIZE);
d *= HIGH_HALFWORD_COEFF;
d *= HIGH_HALFWORD_COEFF;
d += (UWtype) (u & (HIGH_WORD_COEFF - 1));
SFtype
__floatdisf (DWtype u)
{
- /* Do the calculation in DFmode
- so that we don't lose any of the precision of the high word
- while multiplying it. */
- DFtype f;
-
/* Protect against double-rounding error.
Represent any low-order bits, that might be truncated in DFmode,
by a bit that won't be lost. The bit can go in anywhere below the
}
}
}
- f = (Wtype) (u >> WORD_SIZE);
+ /* Do the calculation in DFmode
+ so that we don't lose any of the precision of the high word
+ while multiplying it. */
+ DFtype f = (Wtype) (u >> WORD_SIZE);
f *= HIGH_HALFWORD_COEFF;
f *= HIGH_HALFWORD_COEFF;
f += (UWtype) (u & (HIGH_WORD_COEFF - 1));
}
#endif
-#if defined(L_fixunsxfsi) && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96
+#if defined(L_fixunsxfsi) && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 80
/* Reenable the normal types, in case limits.h needs them. */
#undef char
#undef short
}
#endif
\f
+/* Integer power helper used from __builtin_powi for non-constant
+ exponents. */
+
+#if defined(L_powisf2) || defined(L_powidf2) \
+ || (defined(L_powixf2) && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 80) \
+ || (defined(L_powitf2) && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128)
+# if defined(L_powisf2)
+# define TYPE SFtype
+# define NAME __powisf2
+# elif defined(L_powidf2)
+# define TYPE DFtype
+# define NAME __powidf2
+# elif defined(L_powixf2)
+# define TYPE XFtype
+# define NAME __powixf2
+# elif defined(L_powitf2)
+# define TYPE TFtype
+# define NAME __powitf2
+# endif
+
+TYPE
+NAME (TYPE x, Wtype m)
+{
+ UWtype n = m < 0 ? -m : m;
+ TYPE y = n % 2 ? x : 1;
+ while (n >>= 1)
+ {
+ x = x * x;
+ if (n % 2)
+ y = y * x;
+ }
+ return m < 0 ? 1/y : y;
+}
+
+#endif
+\f
/* From here on down, the routines use normal data types. */
#define SItype bogus_type
{
while (size > 0)
{
- unsigned char c1 = *s1++, c2 = *s2++;
+ const unsigned char c1 = *s1++, c2 = *s2++;
if (c1 != c2)
return c1 - c2;
size--;
#endif /* L_clear_cache */
\f
+#ifdef L_enable_execute_stack
+/* Attempt to turn on execute permission for the stack. */
+
+#ifdef ENABLE_EXECUTE_STACK
+ ENABLE_EXECUTE_STACK
+#else
+void
+__enable_execute_stack (void *addr __attribute__((__unused__)))
+{}
+#endif /* ENABLE_EXECUTE_STACK */
+
+#endif /* L_enable_execute_stack */
+\f
#ifdef L_trampoline
/* Jump to a trampoline, loading the static chain address. */
#if defined(WINNT) && ! defined(__CYGWIN__) && ! defined (_UWIN)
-long
+int
getpagesize (void)
{
#ifdef _ALPHA_
#ifdef TRANSFER_FROM_TRAMPOLINE
TRANSFER_FROM_TRAMPOLINE
#endif
-
-#ifdef __sysV68__
-
-#include <sys/signal.h>
-#include <errno.h>
-
-/* Motorola forgot to put memctl.o in the libp version of libc881.a,
- so define it here, because we need it in __clear_insn_cache below */
-/* On older versions of this OS, no memctl or MCT_TEXT are defined;
- hence we enable this stuff only if MCT_TEXT is #define'd. */
-
-#ifdef MCT_TEXT
-asm("\n\
- global memctl\n\
-memctl:\n\
- movq &75,%d0\n\
- trap &0\n\
- bcc.b noerror\n\
- jmp cerror%\n\
-noerror:\n\
- movq &0,%d0\n\
- rts");
-#endif
-
-/* Clear instruction cache so we can call trampolines on stack.
- This is called from FINALIZE_TRAMPOLINE in mot3300.h. */
-
-void
-__clear_insn_cache (void)
-{
-#ifdef MCT_TEXT
- int save_errno;
-
- /* Preserve errno, because users would be surprised to have
- errno changing without explicitly calling any system-call. */
- save_errno = errno;
-
- /* Keep it simple : memctl (MCT_TEXT) always fully clears the insn cache.
- No need to use an address derived from _start or %sp, as 0 works also. */
- memctl(0, 4096, MCT_TEXT);
- errno = save_errno;
-#endif
-}
-
-#endif /* __sysV68__ */
#endif /* L_trampoline */
\f
#ifndef __CYGWIN__
For systems which support a .init section we use the .init section
to run __do_global_ctors, so we need not do anything here. */
+extern void SYMBOL__MAIN (void);
void
-SYMBOL__MAIN ()
+SYMBOL__MAIN (void)
{
/* Support recursive calls to `main': run initializers just once. */
static int initialized;
OSDN Git Service
