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-rw-r--r--src/recompiler/fpu/softfloat-native.c521
1 files changed, 521 insertions, 0 deletions
diff --git a/src/recompiler/fpu/softfloat-native.c b/src/recompiler/fpu/softfloat-native.c
new file mode 100644
index 00000000..7c7820ab
--- /dev/null
+++ b/src/recompiler/fpu/softfloat-native.c
@@ -0,0 +1,521 @@
+/* Native implementation of soft float functions. Only a single status
+ context is supported */
+#include "softfloat.h"
+#include <math.h>
+#if defined(CONFIG_SOLARIS)
+#include <fenv.h>
+#endif
+
+void set_float_rounding_mode(int val STATUS_PARAM)
+{
+ STATUS(float_rounding_mode) = val;
+#if (defined(CONFIG_BSD) && !defined(__APPLE__) && !defined(__GLIBC__)) || \
+ (defined(CONFIG_SOLARIS) && (CONFIG_SOLARIS_VERSION < 10 || CONFIG_SOLARIS_VERSION == 11)) /* VBOX adds sol 11 */
+ fpsetround(val);
+#else
+ fesetround(val);
+#endif
+}
+
+#ifdef FLOATX80
+void set_floatx80_rounding_precision(int val STATUS_PARAM)
+{
+ STATUS(floatx80_rounding_precision) = val;
+}
+#endif
+
+#if defined(CONFIG_BSD) || \
+ (defined(CONFIG_SOLARIS) && CONFIG_SOLARIS_VERSION < 10)
+#define lrint(d) ((int32_t)rint(d))
+#define llrint(d) ((int64_t)rint(d))
+#define lrintf(f) ((int32_t)rint(f))
+#define llrintf(f) ((int64_t)rint(f))
+#define sqrtf(f) ((float)sqrt(f))
+#define remainderf(fa, fb) ((float)remainder(fa, fb))
+#define rintf(f) ((float)rint(f))
+# if defined(VBOX) && defined(HOST_BSD) /* Some defines which only apply to *BSD */
+# define lrintl(f) ((int32_t)rint(f))
+# define llrintl(f) ((int64_t)rint(f))
+# define rintl(d) ((int32_t)rint(d))
+# define sqrtl(f) (sqrt(f))
+# define remainderl(fa, fb) (remainder(fa, fb))
+# endif /* VBOX && _BSD */
+#if !defined(__sparc__) && \
+ (defined(CONFIG_SOLARIS) && CONFIG_SOLARIS_VERSION < 10)
+extern long double rintl(long double);
+extern long double scalbnl(long double, int);
+
+long long
+llrintl(long double x) {
+ return ((long long) rintl(x));
+}
+
+long
+lrintl(long double x) {
+ return ((long) rintl(x));
+}
+
+long double
+ldexpl(long double x, int n) {
+ return (scalbnl(x, n));
+}
+#endif
+#endif
+
+#if defined(_ARCH_PPC)
+
+/* correct (but slow) PowerPC rint() (glibc version is incorrect) */
+static double qemu_rint(double x)
+{
+ double y = 4503599627370496.0;
+ if (fabs(x) >= y)
+ return x;
+ if (x < 0)
+ y = -y;
+ y = (x + y) - y;
+ if (y == 0.0)
+ y = copysign(y, x);
+ return y;
+}
+
+#define rint qemu_rint
+#endif
+
+/*----------------------------------------------------------------------------
+| Software IEC/IEEE integer-to-floating-point conversion routines.
+*----------------------------------------------------------------------------*/
+float32 int32_to_float32(int v STATUS_PARAM)
+{
+ return (float32)v;
+}
+
+float32 uint32_to_float32(unsigned int v STATUS_PARAM)
+{
+ return (float32)v;
+}
+
+float64 int32_to_float64(int v STATUS_PARAM)
+{
+ return (float64)v;
+}
+
+float64 uint32_to_float64(unsigned int v STATUS_PARAM)
+{
+ return (float64)v;
+}
+
+#ifdef FLOATX80
+floatx80 int32_to_floatx80(int v STATUS_PARAM)
+{
+ return (floatx80)v;
+}
+#endif
+float32 int64_to_float32( int64_t v STATUS_PARAM)
+{
+ return (float32)v;
+}
+float32 uint64_to_float32( uint64_t v STATUS_PARAM)
+{
+ return (float32)v;
+}
+float64 int64_to_float64( int64_t v STATUS_PARAM)
+{
+ return (float64)v;
+}
+float64 uint64_to_float64( uint64_t v STATUS_PARAM)
+{
+ return (float64)v;
+}
+#ifdef FLOATX80
+floatx80 int64_to_floatx80( int64_t v STATUS_PARAM)
+{
+ return (floatx80)v;
+}
+#endif
+
+/* XXX: this code implements the x86 behaviour, not the IEEE one. */
+#if HOST_LONG_BITS == 32
+static inline int long_to_int32(long a)
+{
+ return a;
+}
+#else
+static inline int long_to_int32(long a)
+{
+ if (a != (int32_t)a)
+ a = 0x80000000;
+ return a;
+}
+#endif
+
+/*----------------------------------------------------------------------------
+| Software IEC/IEEE single-precision conversion routines.
+*----------------------------------------------------------------------------*/
+int float32_to_int32( float32 a STATUS_PARAM)
+{
+ return long_to_int32(lrintf(a));
+}
+int float32_to_int32_round_to_zero( float32 a STATUS_PARAM)
+{
+ return (int)a;
+}
+int64_t float32_to_int64( float32 a STATUS_PARAM)
+{
+ return llrintf(a);
+}
+
+int64_t float32_to_int64_round_to_zero( float32 a STATUS_PARAM)
+{
+ return (int64_t)a;
+}
+
+float64 float32_to_float64( float32 a STATUS_PARAM)
+{
+ return a;
+}
+#ifdef FLOATX80
+floatx80 float32_to_floatx80( float32 a STATUS_PARAM)
+{
+ return a;
+}
+#endif
+
+unsigned int float32_to_uint32( float32 a STATUS_PARAM)
+{
+ int64_t v;
+ unsigned int res;
+
+ v = llrintf(a);
+ if (v < 0) {
+ res = 0;
+ } else if (v > 0xffffffff) {
+ res = 0xffffffff;
+ } else {
+ res = v;
+ }
+ return res;
+}
+unsigned int float32_to_uint32_round_to_zero( float32 a STATUS_PARAM)
+{
+ int64_t v;
+ unsigned int res;
+
+ v = (int64_t)a;
+ if (v < 0) {
+ res = 0;
+ } else if (v > 0xffffffff) {
+ res = 0xffffffff;
+ } else {
+ res = v;
+ }
+ return res;
+}
+
+/*----------------------------------------------------------------------------
+| Software IEC/IEEE single-precision operations.
+*----------------------------------------------------------------------------*/
+float32 float32_round_to_int( float32 a STATUS_PARAM)
+{
+ return rintf(a);
+}
+
+float32 float32_rem( float32 a, float32 b STATUS_PARAM)
+{
+ return remainderf(a, b);
+}
+
+float32 float32_sqrt( float32 a STATUS_PARAM)
+{
+ return sqrtf(a);
+}
+int float32_compare( float32 a, float32 b STATUS_PARAM )
+{
+ if (a < b) {
+ return float_relation_less;
+ } else if (a == b) {
+ return float_relation_equal;
+ } else if (a > b) {
+ return float_relation_greater;
+ } else {
+ return float_relation_unordered;
+ }
+}
+int float32_compare_quiet( float32 a, float32 b STATUS_PARAM )
+{
+ if (isless(a, b)) {
+ return float_relation_less;
+ } else if (a == b) {
+ return float_relation_equal;
+ } else if (isgreater(a, b)) {
+ return float_relation_greater;
+ } else {
+ return float_relation_unordered;
+ }
+}
+int float32_is_signaling_nan( float32 a1)
+{
+ float32u u;
+ uint32_t a;
+ u.f = a1;
+ a = u.i;
+ return ( ( ( a>>22 ) & 0x1FF ) == 0x1FE ) && ( a & 0x003FFFFF );
+}
+
+int float32_is_nan( float32 a1 )
+{
+ float32u u;
+ uint64_t a;
+ u.f = a1;
+ a = u.i;
+ return ( 0xFF800000 < ( a<<1 ) );
+}
+
+/*----------------------------------------------------------------------------
+| Software IEC/IEEE double-precision conversion routines.
+*----------------------------------------------------------------------------*/
+int float64_to_int32( float64 a STATUS_PARAM)
+{
+ return long_to_int32(lrint(a));
+}
+int float64_to_int32_round_to_zero( float64 a STATUS_PARAM)
+{
+ return (int)a;
+}
+int64_t float64_to_int64( float64 a STATUS_PARAM)
+{
+ return llrint(a);
+}
+int64_t float64_to_int64_round_to_zero( float64 a STATUS_PARAM)
+{
+ return (int64_t)a;
+}
+float32 float64_to_float32( float64 a STATUS_PARAM)
+{
+ return a;
+}
+#ifdef FLOATX80
+floatx80 float64_to_floatx80( float64 a STATUS_PARAM)
+{
+ return a;
+}
+#endif
+#ifdef FLOAT128
+float128 float64_to_float128( float64 a STATUS_PARAM)
+{
+ return a;
+}
+#endif
+
+unsigned int float64_to_uint32( float64 a STATUS_PARAM)
+{
+ int64_t v;
+ unsigned int res;
+
+ v = llrint(a);
+ if (v < 0) {
+ res = 0;
+ } else if (v > 0xffffffff) {
+ res = 0xffffffff;
+ } else {
+ res = v;
+ }
+ return res;
+}
+unsigned int float64_to_uint32_round_to_zero( float64 a STATUS_PARAM)
+{
+ int64_t v;
+ unsigned int res;
+
+ v = (int64_t)a;
+ if (v < 0) {
+ res = 0;
+ } else if (v > 0xffffffff) {
+ res = 0xffffffff;
+ } else {
+ res = v;
+ }
+ return res;
+}
+uint64_t float64_to_uint64 (float64 a STATUS_PARAM)
+{
+ int64_t v;
+
+ v = llrint(a + (float64)INT64_MIN);
+
+ return v - INT64_MIN;
+}
+uint64_t float64_to_uint64_round_to_zero (float64 a STATUS_PARAM)
+{
+ int64_t v;
+
+ v = (int64_t)(a + (float64)INT64_MIN);
+
+ return v - INT64_MIN;
+}
+
+/*----------------------------------------------------------------------------
+| Software IEC/IEEE double-precision operations.
+*----------------------------------------------------------------------------*/
+#if defined(__sun__) && \
+ (defined(CONFIG_SOLARIS) && CONFIG_SOLARIS_VERSION < 10)
+static inline float64 trunc(float64 x)
+{
+ return x < 0 ? -floor(-x) : floor(x);
+}
+#endif
+float64 float64_trunc_to_int( float64 a STATUS_PARAM )
+{
+ return trunc(a);
+}
+
+float64 float64_round_to_int( float64 a STATUS_PARAM )
+{
+ return rint(a);
+}
+
+float64 float64_rem( float64 a, float64 b STATUS_PARAM)
+{
+ return remainder(a, b);
+}
+
+float64 float64_sqrt( float64 a STATUS_PARAM)
+{
+ return sqrt(a);
+}
+int float64_compare( float64 a, float64 b STATUS_PARAM )
+{
+ if (a < b) {
+ return float_relation_less;
+ } else if (a == b) {
+ return float_relation_equal;
+ } else if (a > b) {
+ return float_relation_greater;
+ } else {
+ return float_relation_unordered;
+ }
+}
+int float64_compare_quiet( float64 a, float64 b STATUS_PARAM )
+{
+ if (isless(a, b)) {
+ return float_relation_less;
+ } else if (a == b) {
+ return float_relation_equal;
+ } else if (isgreater(a, b)) {
+ return float_relation_greater;
+ } else {
+ return float_relation_unordered;
+ }
+}
+int float64_is_signaling_nan( float64 a1)
+{
+ float64u u;
+ uint64_t a;
+ u.f = a1;
+ a = u.i;
+ return
+ ( ( ( a>>51 ) & 0xFFF ) == 0xFFE )
+ && ( a & LIT64( 0x0007FFFFFFFFFFFF ) );
+
+}
+
+int float64_is_nan( float64 a1 )
+{
+ float64u u;
+ uint64_t a;
+ u.f = a1;
+ a = u.i;
+
+ return ( LIT64( 0xFFF0000000000000 ) < (bits64) ( a<<1 ) );
+
+}
+
+#ifdef FLOATX80
+
+/*----------------------------------------------------------------------------
+| Software IEC/IEEE extended double-precision conversion routines.
+*----------------------------------------------------------------------------*/
+int floatx80_to_int32( floatx80 a STATUS_PARAM)
+{
+ return long_to_int32(lrintl(a));
+}
+int floatx80_to_int32_round_to_zero( floatx80 a STATUS_PARAM)
+{
+ return (int)a;
+}
+int64_t floatx80_to_int64( floatx80 a STATUS_PARAM)
+{
+ return llrintl(a);
+}
+int64_t floatx80_to_int64_round_to_zero( floatx80 a STATUS_PARAM)
+{
+ return (int64_t)a;
+}
+float32 floatx80_to_float32( floatx80 a STATUS_PARAM)
+{
+ return a;
+}
+float64 floatx80_to_float64( floatx80 a STATUS_PARAM)
+{
+ return a;
+}
+
+/*----------------------------------------------------------------------------
+| Software IEC/IEEE extended double-precision operations.
+*----------------------------------------------------------------------------*/
+floatx80 floatx80_round_to_int( floatx80 a STATUS_PARAM)
+{
+ return rintl(a);
+}
+floatx80 floatx80_rem( floatx80 a, floatx80 b STATUS_PARAM)
+{
+ return remainderl(a, b);
+}
+floatx80 floatx80_sqrt( floatx80 a STATUS_PARAM)
+{
+ return sqrtl(a);
+}
+int floatx80_compare( floatx80 a, floatx80 b STATUS_PARAM )
+{
+ if (a < b) {
+ return float_relation_less;
+ } else if (a == b) {
+ return float_relation_equal;
+ } else if (a > b) {
+ return float_relation_greater;
+ } else {
+ return float_relation_unordered;
+ }
+}
+int floatx80_compare_quiet( floatx80 a, floatx80 b STATUS_PARAM )
+{
+ if (isless(a, b)) {
+ return float_relation_less;
+ } else if (a == b) {
+ return float_relation_equal;
+ } else if (isgreater(a, b)) {
+ return float_relation_greater;
+ } else {
+ return float_relation_unordered;
+ }
+}
+int floatx80_is_signaling_nan( floatx80 a1)
+{
+ floatx80u u;
+ uint64_t aLow;
+ u.f = a1;
+
+ aLow = u.i.low & ~ LIT64( 0x4000000000000000 );
+ return
+ ( ( u.i.high & 0x7FFF ) == 0x7FFF )
+ && (bits64) ( aLow<<1 )
+ && ( u.i.low == aLow );
+}
+
+int floatx80_is_nan( floatx80 a1 )
+{
+ floatx80u u;
+ u.f = a1;
+ return ( ( u.i.high & 0x7FFF ) == 0x7FFF ) && (bits64) ( u.i.low<<1 );
+}
+
+#endif
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