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-rw-r--r--contrib/compiler-rt/lib/ppc/DD.h46
-rw-r--r--contrib/compiler-rt/lib/ppc/divtc3.c93
-rw-r--r--contrib/compiler-rt/lib/ppc/fixtfdi.c104
-rw-r--r--contrib/compiler-rt/lib/ppc/fixunstfdi.c60
-rw-r--r--contrib/compiler-rt/lib/ppc/floatditf.c37
-rw-r--r--contrib/compiler-rt/lib/ppc/floatunditf.c42
-rw-r--r--contrib/compiler-rt/lib/ppc/gcc_qadd.c76
-rw-r--r--contrib/compiler-rt/lib/ppc/gcc_qdiv.c55
-rw-r--r--contrib/compiler-rt/lib/ppc/gcc_qmul.c53
-rw-r--r--contrib/compiler-rt/lib/ppc/gcc_qsub.c76
-rw-r--r--contrib/compiler-rt/lib/ppc/multc3.c97
-rw-r--r--contrib/compiler-rt/lib/ppc/restFP.S43
-rw-r--r--contrib/compiler-rt/lib/ppc/saveFP.S40
13 files changed, 822 insertions, 0 deletions
diff --git a/contrib/compiler-rt/lib/ppc/DD.h b/contrib/compiler-rt/lib/ppc/DD.h
new file mode 100644
index 0000000..9ecd1f5
--- /dev/null
+++ b/contrib/compiler-rt/lib/ppc/DD.h
@@ -0,0 +1,46 @@
+#ifndef __DD_HEADER
+#define __DD_HEADER
+
+#include <stdint.h>
+
+typedef union {
+ long double ld;
+ struct {
+ double hi;
+ double lo;
+ }s;
+}DD;
+
+typedef union {
+ double d;
+ uint64_t x;
+} doublebits;
+
+#define LOWORDER(xy,xHi,xLo,yHi,yLo) \
+ (((((xHi)*(yHi) - (xy)) + (xHi)*(yLo)) + (xLo)*(yHi)) + (xLo)*(yLo))
+
+static inline double __attribute__((always_inline))
+fabs(double x)
+{
+ doublebits result = { .d = x };
+ result.x &= UINT64_C(0x7fffffffffffffff);
+ return result.d;
+}
+
+static inline double __attribute__((always_inline))
+high26bits(double x)
+{
+ doublebits result = { .d = x };
+ result.x &= UINT64_C(0xfffffffff8000000);
+ return result.d;
+}
+
+static inline int __attribute__((always_inline))
+different_sign(double x, double y)
+{
+ doublebits xsignbit = { .d = x }, ysignbit = { .d = y };
+ int result = (int)(xsignbit.x >> 63) ^ (int)(ysignbit.x >> 63);
+ return result;
+}
+
+#endif /* __DD_HEADER */
diff --git a/contrib/compiler-rt/lib/ppc/divtc3.c b/contrib/compiler-rt/lib/ppc/divtc3.c
new file mode 100644
index 0000000..d41f621
--- /dev/null
+++ b/contrib/compiler-rt/lib/ppc/divtc3.c
@@ -0,0 +1,93 @@
+/* This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ */
+
+#include "DD.h"
+#include <math.h>
+
+#if !defined(INFINITY) && defined(HUGE_VAL)
+#define INFINITY HUGE_VAL
+#endif /* INFINITY */
+
+#define makeFinite(x) { \
+ (x).s.hi = __builtin_copysign(isinf((x).s.hi) ? 1.0 : 0.0, (x).s.hi); \
+ (x).s.lo = 0.0; \
+ }
+
+long double __gcc_qadd(long double, long double);
+long double __gcc_qsub(long double, long double);
+long double __gcc_qmul(long double, long double);
+long double __gcc_qdiv(long double, long double);
+
+long double _Complex
+__divtc3(long double a, long double b, long double c, long double d)
+{
+ DD cDD = { .ld = c };
+ DD dDD = { .ld = d };
+
+ int ilogbw = 0;
+ const double logbw = logb(__builtin_fmax( __builtin_fabs(cDD.s.hi), __builtin_fabs(dDD.s.hi) ));
+
+ if (isfinite(logbw))
+ {
+ ilogbw = (int)logbw;
+
+ cDD.s.hi = scalbn(cDD.s.hi, -ilogbw);
+ cDD.s.lo = scalbn(cDD.s.lo, -ilogbw);
+ dDD.s.hi = scalbn(dDD.s.hi, -ilogbw);
+ dDD.s.lo = scalbn(dDD.s.lo, -ilogbw);
+ }
+
+ const long double denom = __gcc_qadd(__gcc_qmul(cDD.ld, cDD.ld), __gcc_qmul(dDD.ld, dDD.ld));
+ const long double realNumerator = __gcc_qadd(__gcc_qmul(a,cDD.ld), __gcc_qmul(b,dDD.ld));
+ const long double imagNumerator = __gcc_qsub(__gcc_qmul(b,cDD.ld), __gcc_qmul(a,dDD.ld));
+
+ DD real = { .ld = __gcc_qdiv(realNumerator, denom) };
+ DD imag = { .ld = __gcc_qdiv(imagNumerator, denom) };
+
+ real.s.hi = scalbn(real.s.hi, -ilogbw);
+ real.s.lo = scalbn(real.s.lo, -ilogbw);
+ imag.s.hi = scalbn(imag.s.hi, -ilogbw);
+ imag.s.lo = scalbn(imag.s.lo, -ilogbw);
+
+ if (isnan(real.s.hi) && isnan(imag.s.hi))
+ {
+ DD aDD = { .ld = a };
+ DD bDD = { .ld = b };
+ DD rDD = { .ld = denom };
+
+ if ((rDD.s.hi == 0.0) && (!isnan(aDD.s.hi) || !isnan(bDD.s.hi)))
+ {
+ real.s.hi = __builtin_copysign(INFINITY,cDD.s.hi) * aDD.s.hi;
+ real.s.lo = 0.0;
+ imag.s.hi = __builtin_copysign(INFINITY,cDD.s.hi) * bDD.s.hi;
+ imag.s.lo = 0.0;
+ }
+
+ else if ((isinf(aDD.s.hi) || isinf(bDD.s.hi)) && isfinite(cDD.s.hi) && isfinite(dDD.s.hi))
+ {
+ makeFinite(aDD);
+ makeFinite(bDD);
+ real.s.hi = INFINITY * (aDD.s.hi*cDD.s.hi + bDD.s.hi*dDD.s.hi);
+ real.s.lo = 0.0;
+ imag.s.hi = INFINITY * (bDD.s.hi*cDD.s.hi - aDD.s.hi*dDD.s.hi);
+ imag.s.lo = 0.0;
+ }
+
+ else if ((isinf(cDD.s.hi) || isinf(dDD.s.hi)) && isfinite(aDD.s.hi) && isfinite(bDD.s.hi))
+ {
+ makeFinite(cDD);
+ makeFinite(dDD);
+ real.s.hi = __builtin_copysign(0.0,(aDD.s.hi*cDD.s.hi + bDD.s.hi*dDD.s.hi));
+ real.s.lo = 0.0;
+ imag.s.hi = __builtin_copysign(0.0,(bDD.s.hi*cDD.s.hi - aDD.s.hi*dDD.s.hi));
+ imag.s.lo = 0.0;
+ }
+ }
+
+ long double _Complex z;
+ __real__ z = real.ld;
+ __imag__ z = imag.ld;
+
+ return z;
+}
diff --git a/contrib/compiler-rt/lib/ppc/fixtfdi.c b/contrib/compiler-rt/lib/ppc/fixtfdi.c
new file mode 100644
index 0000000..fa113a0
--- /dev/null
+++ b/contrib/compiler-rt/lib/ppc/fixtfdi.c
@@ -0,0 +1,104 @@
+/* This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ */
+
+/* int64_t __fixunstfdi(long double x);
+ * This file implements the PowerPC 128-bit double-double -> int64_t conversion
+ */
+
+#include "DD.h"
+#include <stdint.h>
+
+uint64_t __fixtfdi(long double input)
+{
+ const DD x = { .ld = input };
+ const doublebits hibits = { .d = x.s.hi };
+
+ const uint32_t absHighWord = (uint32_t)(hibits.x >> 32) & UINT32_C(0x7fffffff);
+ const uint32_t absHighWordMinusOne = absHighWord - UINT32_C(0x3ff00000);
+
+ /* If (1.0 - tiny) <= input < 0x1.0p63: */
+ if (UINT32_C(0x03f00000) > absHighWordMinusOne)
+ {
+ /* Do an unsigned conversion of the absolute value, then restore the sign. */
+ const int unbiasedHeadExponent = absHighWordMinusOne >> 20;
+
+ int64_t result = hibits.x & INT64_C(0x000fffffffffffff); /* mantissa(hi) */
+ result |= INT64_C(0x0010000000000000); /* matissa(hi) with implicit bit */
+ result <<= 10; /* mantissa(hi) with one zero preceeding bit. */
+
+ const int64_t hiNegationMask = ((int64_t)(hibits.x)) >> 63;
+
+ /* If the tail is non-zero, we need to patch in the tail bits. */
+ if (0.0 != x.s.lo)
+ {
+ const doublebits lobits = { .d = x.s.lo };
+ int64_t tailMantissa = lobits.x & INT64_C(0x000fffffffffffff);
+ tailMantissa |= INT64_C(0x0010000000000000);
+
+ /* At this point we have the mantissa of |tail| */
+ /* We need to negate it if head and tail have different signs. */
+ const int64_t loNegationMask = ((int64_t)(lobits.x)) >> 63;
+ const int64_t negationMask = loNegationMask ^ hiNegationMask;
+ tailMantissa = (tailMantissa ^ negationMask) - negationMask;
+
+ /* Now we have the mantissa of tail as a signed 2s-complement integer */
+
+ const int biasedTailExponent = (int)(lobits.x >> 52) & 0x7ff;
+
+ /* Shift the tail mantissa into the right position, accounting for the
+ * bias of 10 that we shifted the head mantissa by.
+ */
+ tailMantissa >>= (unbiasedHeadExponent - (biasedTailExponent - (1023 - 10)));
+
+ result += tailMantissa;
+ }
+
+ result >>= (62 - unbiasedHeadExponent);
+
+ /* Restore the sign of the result and return */
+ result = (result ^ hiNegationMask) - hiNegationMask;
+ return result;
+
+ }
+
+ /* Edge cases handled here: */
+
+ /* |x| < 1, result is zero. */
+ if (1.0 > __builtin_fabs(x.s.hi))
+ return INT64_C(0);
+
+ /* x very close to INT64_MIN, care must be taken to see which side we are on. */
+ if (x.s.hi == -0x1.0p63) {
+
+ int64_t result = INT64_MIN;
+
+ if (0.0 < x.s.lo)
+ {
+ /* If the tail is positive, the correct result is something other than INT64_MIN.
+ * we'll need to figure out what it is.
+ */
+
+ const doublebits lobits = { .d = x.s.lo };
+ int64_t tailMantissa = lobits.x & INT64_C(0x000fffffffffffff);
+ tailMantissa |= INT64_C(0x0010000000000000);
+
+ /* Now we negate the tailMantissa */
+ tailMantissa = (tailMantissa ^ INT64_C(-1)) + INT64_C(1);
+
+ /* And shift it by the appropriate amount */
+ const int biasedTailExponent = (int)(lobits.x >> 52) & 0x7ff;
+ tailMantissa >>= 1075 - biasedTailExponent;
+
+ result -= tailMantissa;
+ }
+
+ return result;
+ }
+
+ /* Signed overflows, infinities, and NaNs */
+ if (x.s.hi > 0.0)
+ return INT64_MAX;
+ else
+ return INT64_MIN;
+}
diff --git a/contrib/compiler-rt/lib/ppc/fixunstfdi.c b/contrib/compiler-rt/lib/ppc/fixunstfdi.c
new file mode 100644
index 0000000..1fb5248
--- /dev/null
+++ b/contrib/compiler-rt/lib/ppc/fixunstfdi.c
@@ -0,0 +1,60 @@
+/* This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ */
+
+/* uint64_t __fixunstfdi(long double x); */
+/* This file implements the PowerPC 128-bit double-double -> uint64_t conversion */
+
+#include "DD.h"
+#include <stdint.h>
+
+uint64_t __fixunstfdi(long double input)
+{
+ const DD x = { .ld = input };
+ const doublebits hibits = { .d = x.s.hi };
+
+ const uint32_t highWordMinusOne = (uint32_t)(hibits.x >> 32) - UINT32_C(0x3ff00000);
+
+ /* If (1.0 - tiny) <= input < 0x1.0p64: */
+ if (UINT32_C(0x04000000) > highWordMinusOne)
+ {
+ const int unbiasedHeadExponent = highWordMinusOne >> 20;
+
+ uint64_t result = hibits.x & UINT64_C(0x000fffffffffffff); /* mantissa(hi) */
+ result |= UINT64_C(0x0010000000000000); /* matissa(hi) with implicit bit */
+ result <<= 11; /* mantissa(hi) left aligned in the int64 field. */
+
+ /* If the tail is non-zero, we need to patch in the tail bits. */
+ if (0.0 != x.s.lo)
+ {
+ const doublebits lobits = { .d = x.s.lo };
+ int64_t tailMantissa = lobits.x & INT64_C(0x000fffffffffffff);
+ tailMantissa |= INT64_C(0x0010000000000000);
+
+ /* At this point we have the mantissa of |tail| */
+
+ const int64_t negationMask = ((int64_t)(lobits.x)) >> 63;
+ tailMantissa = (tailMantissa ^ negationMask) - negationMask;
+
+ /* Now we have the mantissa of tail as a signed 2s-complement integer */
+
+ const int biasedTailExponent = (int)(lobits.x >> 52) & 0x7ff;
+
+ /* Shift the tail mantissa into the right position, accounting for the
+ * bias of 11 that we shifted the head mantissa by.
+ */
+ tailMantissa >>= (unbiasedHeadExponent - (biasedTailExponent - (1023 - 11)));
+
+ result += tailMantissa;
+ }
+
+ result >>= (63 - unbiasedHeadExponent);
+ return result;
+ }
+
+ /* Edge cases are handled here, with saturation. */
+ if (1.0 > x.s.hi)
+ return UINT64_C(0);
+ else
+ return UINT64_MAX;
+}
diff --git a/contrib/compiler-rt/lib/ppc/floatditf.c b/contrib/compiler-rt/lib/ppc/floatditf.c
new file mode 100644
index 0000000..ed23dc8
--- /dev/null
+++ b/contrib/compiler-rt/lib/ppc/floatditf.c
@@ -0,0 +1,37 @@
+/* This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ */
+
+/* long double __floatditf(long long x); */
+/* This file implements the PowerPC long long -> long double conversion */
+
+#include "DD.h"
+#include <stdint.h>
+
+long double __floatditf(int64_t a) {
+
+ static const double twop32 = 0x1.0p32;
+ static const double twop52 = 0x1.0p52;
+
+ doublebits low = { .d = twop52 };
+ low.x |= a & UINT64_C(0x00000000ffffffff); /* 0x1.0p52 + low 32 bits of a. */
+
+ const double high_addend = (double)((int32_t)(a >> 32))*twop32 - twop52;
+
+ /* At this point, we have two double precision numbers
+ * high_addend and low.d, and we wish to return their sum
+ * as a canonicalized long double:
+ */
+
+ /* This implementation sets the inexact flag spuriously.
+ * This could be avoided, but at some substantial cost.
+ */
+
+ DD result;
+
+ result.s.hi = high_addend + low.d;
+ result.s.lo = (high_addend - result.s.hi) + low.d;
+
+ return result.ld;
+
+}
diff --git a/contrib/compiler-rt/lib/ppc/floatunditf.c b/contrib/compiler-rt/lib/ppc/floatunditf.c
new file mode 100644
index 0000000..20a3b71
--- /dev/null
+++ b/contrib/compiler-rt/lib/ppc/floatunditf.c
@@ -0,0 +1,42 @@
+/* This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ */
+
+/* long double __floatunditf(unsigned long long x); */
+/* This file implements the PowerPC unsigned long long -> long double conversion */
+
+#include "DD.h"
+#include <stdint.h>
+
+long double __floatunditf(uint64_t a) {
+
+ /* Begins with an exact copy of the code from __floatundidf */
+
+ static const double twop52 = 0x1.0p52;
+ static const double twop84 = 0x1.0p84;
+ static const double twop84_plus_twop52 = 0x1.00000001p84;
+
+ doublebits high = { .d = twop84 };
+ doublebits low = { .d = twop52 };
+
+ high.x |= a >> 32; /* 0x1.0p84 + high 32 bits of a */
+ low.x |= a & UINT64_C(0x00000000ffffffff); /* 0x1.0p52 + low 32 bits of a */
+
+ const double high_addend = high.d - twop84_plus_twop52;
+
+ /* At this point, we have two double precision numbers
+ * high_addend and low.d, and we wish to return their sum
+ * as a canonicalized long double:
+ */
+
+ /* This implementation sets the inexact flag spuriously. */
+ /* This could be avoided, but at some substantial cost. */
+
+ DD result;
+
+ result.s.hi = high_addend + low.d;
+ result.s.lo = (high_addend - result.s.hi) + low.d;
+
+ return result.ld;
+
+}
diff --git a/contrib/compiler-rt/lib/ppc/gcc_qadd.c b/contrib/compiler-rt/lib/ppc/gcc_qadd.c
new file mode 100644
index 0000000..c388c7e
--- /dev/null
+++ b/contrib/compiler-rt/lib/ppc/gcc_qadd.c
@@ -0,0 +1,76 @@
+/* This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ */
+
+/* long double __gcc_qadd(long double x, long double y);
+ * This file implements the PowerPC 128-bit double-double add operation.
+ * This implementation is shamelessly cribbed from Apple's DDRT, circa 1993(!)
+ */
+
+#include "DD.h"
+
+long double __gcc_qadd(long double x, long double y)
+{
+ static const uint32_t infinityHi = UINT32_C(0x7ff00000);
+
+ DD dst = { .ld = x }, src = { .ld = y };
+
+ register double A = dst.s.hi, a = dst.s.lo,
+ B = src.s.hi, b = src.s.lo;
+
+ /* If both operands are zero: */
+ if ((A == 0.0) && (B == 0.0)) {
+ dst.s.hi = A + B;
+ dst.s.lo = 0.0;
+ return dst.ld;
+ }
+
+ /* If either operand is NaN or infinity: */
+ const doublebits abits = { .d = A };
+ const doublebits bbits = { .d = B };
+ if ((((uint32_t)(abits.x >> 32) & infinityHi) == infinityHi) ||
+ (((uint32_t)(bbits.x >> 32) & infinityHi) == infinityHi)) {
+ dst.s.hi = A + B;
+ dst.s.lo = 0.0;
+ return dst.ld;
+ }
+
+ /* If the computation overflows: */
+ /* This may be playing things a little bit fast and loose, but it will do for a start. */
+ const double testForOverflow = A + (B + (a + b));
+ const doublebits testbits = { .d = testForOverflow };
+ if (((uint32_t)(testbits.x >> 32) & infinityHi) == infinityHi) {
+ dst.s.hi = testForOverflow;
+ dst.s.lo = 0.0;
+ return dst.ld;
+ }
+
+ double H, h;
+ double T, t;
+ double W, w;
+ double Y;
+
+ H = B + (A - (A + B));
+ T = b + (a - (a + b));
+ h = A + (B - (A + B));
+ t = a + (b - (a + b));
+
+ if (fabs(A) <= fabs(B))
+ w = (a + b) + h;
+ else
+ w = (a + b) + H;
+
+ W = (A + B) + w;
+ Y = (A + B) - W;
+ Y += w;
+
+ if (fabs(a) <= fabs(b))
+ w = t + Y;
+ else
+ w = T + Y;
+
+ dst.s.hi = Y = W + w;
+ dst.s.lo = (W - Y) + w;
+
+ return dst.ld;
+}
diff --git a/contrib/compiler-rt/lib/ppc/gcc_qdiv.c b/contrib/compiler-rt/lib/ppc/gcc_qdiv.c
new file mode 100644
index 0000000..70aa00b
--- /dev/null
+++ b/contrib/compiler-rt/lib/ppc/gcc_qdiv.c
@@ -0,0 +1,55 @@
+/* This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ */
+
+/* long double __gcc_qdiv(long double x, long double y);
+ * This file implements the PowerPC 128-bit double-double division operation.
+ * This implementation is shamelessly cribbed from Apple's DDRT, circa 1993(!)
+ */
+
+#include "DD.h"
+
+long double __gcc_qdiv(long double a, long double b)
+{
+ static const uint32_t infinityHi = UINT32_C(0x7ff00000);
+ DD dst = { .ld = a }, src = { .ld = b };
+
+ register double x = dst.s.hi, x1 = dst.s.lo,
+ y = src.s.hi, y1 = src.s.lo;
+
+ double yHi, yLo, qHi, qLo;
+ double yq, tmp, q;
+
+ q = x / y;
+
+ /* Detect special cases */
+ if (q == 0.0) {
+ dst.s.hi = q;
+ dst.s.lo = 0.0;
+ return dst.ld;
+ }
+
+ const doublebits qBits = { .d = q };
+ if (((uint32_t)(qBits.x >> 32) & infinityHi) == infinityHi) {
+ dst.s.hi = q;
+ dst.s.lo = 0.0;
+ return dst.ld;
+ }
+
+ yHi = high26bits(y);
+ qHi = high26bits(q);
+
+ yq = y * q;
+ yLo = y - yHi;
+ qLo = q - qHi;
+
+ tmp = LOWORDER(yq, yHi, yLo, qHi, qLo);
+ tmp = (x - yq) - tmp;
+ tmp = ((tmp + x1) - y1 * q) / y;
+ x = q + tmp;
+
+ dst.s.lo = (q - x) + tmp;
+ dst.s.hi = x;
+
+ return dst.ld;
+}
diff --git a/contrib/compiler-rt/lib/ppc/gcc_qmul.c b/contrib/compiler-rt/lib/ppc/gcc_qmul.c
new file mode 100644
index 0000000..fb4c516
--- /dev/null
+++ b/contrib/compiler-rt/lib/ppc/gcc_qmul.c
@@ -0,0 +1,53 @@
+/* This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ */
+
+/* long double __gcc_qmul(long double x, long double y);
+ * This file implements the PowerPC 128-bit double-double multiply operation.
+ * This implementation is shamelessly cribbed from Apple's DDRT, circa 1993(!)
+ */
+
+#include "DD.h"
+
+long double __gcc_qmul(long double x, long double y)
+{
+ static const uint32_t infinityHi = UINT32_C(0x7ff00000);
+ DD dst = { .ld = x }, src = { .ld = y };
+
+ register double A = dst.s.hi, a = dst.s.lo,
+ B = src.s.hi, b = src.s.lo;
+
+ double aHi, aLo, bHi, bLo;
+ double ab, tmp, tau;
+
+ ab = A * B;
+
+ /* Detect special cases */
+ if (ab == 0.0) {
+ dst.s.hi = ab;
+ dst.s.lo = 0.0;
+ return dst.ld;
+ }
+
+ const doublebits abBits = { .d = ab };
+ if (((uint32_t)(abBits.x >> 32) & infinityHi) == infinityHi) {
+ dst.s.hi = ab;
+ dst.s.lo = 0.0;
+ return dst.ld;
+ }
+
+ /* Generic cases handled here. */
+ aHi = high26bits(A);
+ bHi = high26bits(B);
+ aLo = A - aHi;
+ bLo = B - bHi;
+
+ tmp = LOWORDER(ab, aHi, aLo, bHi, bLo);
+ tmp += (A * b + a * B);
+ tau = ab + tmp;
+
+ dst.s.lo = (ab - tau) + tmp;
+ dst.s.hi = tau;
+
+ return dst.ld;
+}
diff --git a/contrib/compiler-rt/lib/ppc/gcc_qsub.c b/contrib/compiler-rt/lib/ppc/gcc_qsub.c
new file mode 100644
index 0000000..4f1f7ac
--- /dev/null
+++ b/contrib/compiler-rt/lib/ppc/gcc_qsub.c
@@ -0,0 +1,76 @@
+/* This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ */
+
+/* long double __gcc_qsub(long double x, long double y);
+ * This file implements the PowerPC 128-bit double-double add operation.
+ * This implementation is shamelessly cribbed from Apple's DDRT, circa 1993(!)
+ */
+
+#include "DD.h"
+
+long double __gcc_qsub(long double x, long double y)
+{
+ static const uint32_t infinityHi = UINT32_C(0x7ff00000);
+
+ DD dst = { .ld = x }, src = { .ld = y };
+
+ register double A = dst.s.hi, a = dst.s.lo,
+ B = -src.s.hi, b = -src.s.lo;
+
+ /* If both operands are zero: */
+ if ((A == 0.0) && (B == 0.0)) {
+ dst.s.hi = A + B;
+ dst.s.lo = 0.0;
+ return dst.ld;
+ }
+
+ /* If either operand is NaN or infinity: */
+ const doublebits abits = { .d = A };
+ const doublebits bbits = { .d = B };
+ if ((((uint32_t)(abits.x >> 32) & infinityHi) == infinityHi) ||
+ (((uint32_t)(bbits.x >> 32) & infinityHi) == infinityHi)) {
+ dst.s.hi = A + B;
+ dst.s.lo = 0.0;
+ return dst.ld;
+ }
+
+ /* If the computation overflows: */
+ /* This may be playing things a little bit fast and loose, but it will do for a start. */
+ const double testForOverflow = A + (B + (a + b));
+ const doublebits testbits = { .d = testForOverflow };
+ if (((uint32_t)(testbits.x >> 32) & infinityHi) == infinityHi) {
+ dst.s.hi = testForOverflow;
+ dst.s.lo = 0.0;
+ return dst.ld;
+ }
+
+ double H, h;
+ double T, t;
+ double W, w;
+ double Y;
+
+ H = B + (A - (A + B));
+ T = b + (a - (a + b));
+ h = A + (B - (A + B));
+ t = a + (b - (a + b));
+
+ if (fabs(A) <= fabs(B))
+ w = (a + b) + h;
+ else
+ w = (a + b) + H;
+
+ W = (A + B) + w;
+ Y = (A + B) - W;
+ Y += w;
+
+ if (fabs(a) <= fabs(b))
+ w = t + Y;
+ else
+ w = T + Y;
+
+ dst.s.hi = Y = W + w;
+ dst.s.lo = (W - Y) + w;
+
+ return dst.ld;
+}
diff --git a/contrib/compiler-rt/lib/ppc/multc3.c b/contrib/compiler-rt/lib/ppc/multc3.c
new file mode 100644
index 0000000..9d17a2c
--- /dev/null
+++ b/contrib/compiler-rt/lib/ppc/multc3.c
@@ -0,0 +1,97 @@
+/* This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ */
+
+#include "DD.h"
+#include <math.h>
+
+#if !defined(INFINITY) && defined(HUGE_VAL)
+#define INFINITY HUGE_VAL
+#endif /* INFINITY */
+
+#define makeFinite(x) { \
+ (x).s.hi = __builtin_copysign(isinf((x).s.hi) ? 1.0 : 0.0, (x).s.hi); \
+ (x).s.lo = 0.0; \
+ }
+
+#define zeroNaN(x) { \
+ if (isnan((x).s.hi)) { \
+ (x).s.hi = __builtin_copysign(0.0, (x).s.hi); \
+ (x).s.lo = 0.0; \
+ } \
+ }
+
+long double __gcc_qadd(long double, long double);
+long double __gcc_qsub(long double, long double);
+long double __gcc_qmul(long double, long double);
+
+long double _Complex
+__multc3(long double a, long double b, long double c, long double d)
+{
+ long double ac = __gcc_qmul(a,c);
+ long double bd = __gcc_qmul(b,d);
+ long double ad = __gcc_qmul(a,d);
+ long double bc = __gcc_qmul(b,c);
+
+ DD real = { .ld = __gcc_qsub(ac,bd) };
+ DD imag = { .ld = __gcc_qadd(ad,bc) };
+
+ if (isnan(real.s.hi) && isnan(imag.s.hi))
+ {
+ int recalc = 0;
+
+ DD aDD = { .ld = a };
+ DD bDD = { .ld = b };
+ DD cDD = { .ld = c };
+ DD dDD = { .ld = d };
+
+ if (isinf(aDD.s.hi) || isinf(bDD.s.hi))
+ {
+ makeFinite(aDD);
+ makeFinite(bDD);
+ zeroNaN(cDD);
+ zeroNaN(dDD);
+ recalc = 1;
+ }
+
+ if (isinf(cDD.s.hi) || isinf(dDD.s.hi))
+ {
+ makeFinite(cDD);
+ makeFinite(dDD);
+ zeroNaN(aDD);
+ zeroNaN(bDD);
+ recalc = 1;
+ }
+
+ if (!recalc)
+ {
+ DD acDD = { .ld = ac };
+ DD bdDD = { .ld = bd };
+ DD adDD = { .ld = ad };
+ DD bcDD = { .ld = bc };
+
+ if (isinf(acDD.s.hi) || isinf(bdDD.s.hi) || isinf(adDD.s.hi) || isinf(bcDD.s.hi))
+ {
+ zeroNaN(aDD);
+ zeroNaN(bDD);
+ zeroNaN(cDD);
+ zeroNaN(dDD);
+ recalc = 1;
+ }
+ }
+
+ if (recalc)
+ {
+ real.s.hi = INFINITY * (aDD.s.hi*cDD.s.hi - bDD.s.hi*dDD.s.hi);
+ real.s.lo = 0.0;
+ imag.s.hi = INFINITY * (aDD.s.hi*dDD.s.hi + bDD.s.hi*cDD.s.hi);
+ imag.s.lo = 0.0;
+ }
+ }
+
+ long double _Complex z;
+ __real__ z = real.ld;
+ __imag__ z = imag.ld;
+
+ return z;
+}
diff --git a/contrib/compiler-rt/lib/ppc/restFP.S b/contrib/compiler-rt/lib/ppc/restFP.S
new file mode 100644
index 0000000..00919c8
--- /dev/null
+++ b/contrib/compiler-rt/lib/ppc/restFP.S
@@ -0,0 +1,43 @@
+//===-- restFP.S - Implement restFP ---------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "../assembly.h"
+
+//
+// Helper function used by compiler to restore ppc floating point registers at
+// the end of the function epilog. This function returns to the address
+// in the LR slot. So a function epilog must branch (b) not branch and link
+// (bl) to this function.
+// If the compiler wants to restore f27..f31, it does a "b restFP+52"
+//
+// This function should never be exported by a shared library. Each linkage
+// unit carries its own copy of this function.
+//
+DEFINE_COMPILERRT_PRIVATE_FUNCTION_UNMANGLED(restFP)
+ lfd f14,-144(r1)
+ lfd f15,-136(r1)
+ lfd f16,-128(r1)
+ lfd f17,-120(r1)
+ lfd f18,-112(r1)
+ lfd f19,-104(r1)
+ lfd f20,-96(r1)
+ lfd f21,-88(r1)
+ lfd f22,-80(r1)
+ lfd f23,-72(r1)
+ lfd f24,-64(r1)
+ lfd f25,-56(r1)
+ lfd f26,-48(r1)
+ lfd f27,-40(r1)
+ lfd f28,-32(r1)
+ lfd f29,-24(r1)
+ lfd f30,-16(r1)
+ lfd f31,-8(r1)
+ lwz r0,8(r1)
+ mtlr r0
+ blr
diff --git a/contrib/compiler-rt/lib/ppc/saveFP.S b/contrib/compiler-rt/lib/ppc/saveFP.S
new file mode 100644
index 0000000..302da6e
--- /dev/null
+++ b/contrib/compiler-rt/lib/ppc/saveFP.S
@@ -0,0 +1,40 @@
+//===-- saveFP.S - Implement saveFP ---------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "../assembly.h"
+
+//
+// Helper function used by compiler to save ppc floating point registers in
+// function prologs. This routines also saves r0 in the LR slot.
+// If the compiler wants to save f27..f31, it does a "bl saveFP+52"
+//
+// This function should never be exported by a shared library. Each linkage
+// unit carries its own copy of this function.
+//
+DEFINE_COMPILERRT_PRIVATE_FUNCTION_UNMANGLED(saveFP)
+ stfd f14,-144(r1)
+ stfd f15,-136(r1)
+ stfd f16,-128(r1)
+ stfd f17,-120(r1)
+ stfd f18,-112(r1)
+ stfd f19,-104(r1)
+ stfd f20,-96(r1)
+ stfd f21,-88(r1)
+ stfd f22,-80(r1)
+ stfd f23,-72(r1)
+ stfd f24,-64(r1)
+ stfd f25,-56(r1)
+ stfd f26,-48(r1)
+ stfd f27,-40(r1)
+ stfd f28,-32(r1)
+ stfd f29,-24(r1)
+ stfd f30,-16(r1)
+ stfd f31,-8(r1)
+ stw r0,8(r1)
+ blr
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