Add support files for compiling with soft-float. This has been

copied from ARM and modified to warrant the duplication. Oh,
and to make it work for PowerPC :-)

3 files changed, 448 insertions, 0 deletions

diff --git a/lib/libc/powerpc/softfloat/milieu.h b/lib/libc/powerpc/softfloat/milieu.h
new file mode 100644
index 0000000..e2e43b1
--- /dev/null
+++ b/lib/libc/powerpc/softfloat/milieu.h
@@ -0,0 +1,49 @@
+/* $NetBSD: milieu.h,v 1.1 2000/12/29 20:13:54 bjh21 Exp $ */
+/* $FreeBSD$ */
+
+/*
+===============================================================================
+
+This C header file is part of the SoftFloat IEC/IEEE Floating-point
+Arithmetic Package, Release 2a.
+
+Written by John R. Hauser.  This work was made possible in part by the
+International Computer Science Institute, located at Suite 600, 1947 Center
+Street, Berkeley, California 94704.  Funding was partially provided by the
+National Science Foundation under grant MIP-9311980.  The original version
+of this code was written as part of a project to build a fixed-point vector
+processor in collaboration with the University of California at Berkeley,
+overseen by Profs. Nelson Morgan and John Wawrzynek.  More information
+is available through the Web page `http://HTTP.CS.Berkeley.EDU/~jhauser/
+arithmetic/SoftFloat.html'.
+
+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort
+has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT
+TIMES RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO
+PERSONS AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ANY
+AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE.
+
+Derivative works are acceptable, even for commercial purposes, so long as
+(1) they include prominent notice that the work is derivative, and (2) they
+include prominent notice akin to these four paragraphs for those parts of
+this code that are retained.
+
+===============================================================================
+*/
+
+/*
+-------------------------------------------------------------------------------
+Include common integer types and flags.
+-------------------------------------------------------------------------------
+*/
+#include "powerpc-gcc.h"
+
+/*
+-------------------------------------------------------------------------------
+Symbolic Boolean literals.
+-------------------------------------------------------------------------------
+*/
+enum {
+    FALSE = 0,
+    TRUE  = 1
+};
diff --git a/lib/libc/powerpc/softfloat/powerpc-gcc.h b/lib/libc/powerpc/softfloat/powerpc-gcc.h
new file mode 100644
index 0000000..e2f8680
--- /dev/null
+++ b/lib/libc/powerpc/softfloat/powerpc-gcc.h
@@ -0,0 +1,92 @@
+/* $NetBSD: arm-gcc.h,v 1.2 2001/02/21 18:09:25 bjh21 Exp $ */
+/* $FreeBSD$ */
+
+/*
+-------------------------------------------------------------------------------
+One of the macros `BIGENDIAN' or `LITTLEENDIAN' must be defined.
+-------------------------------------------------------------------------------
+*/
+#define BIGENDIAN
+
+/*
+-------------------------------------------------------------------------------
+The macro `BITS64' can be defined to indicate that 64-bit integer types are
+supported by the compiler.
+-------------------------------------------------------------------------------
+*/
+#define BITS64
+
+/*
+-------------------------------------------------------------------------------
+Each of the following `typedef's defines the most convenient type that holds
+integers of at least as many bits as specified.  For example, `uint8' should
+be the most convenient type that can hold unsigned integers of as many as
+8 bits.  The `flag' type must be able to hold either a 0 or 1.  For most
+implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed
+to the same as `int'.
+-------------------------------------------------------------------------------
+*/
+typedef int flag;
+typedef unsigned int uint8;
+typedef int int8;
+typedef unsigned int uint16;
+typedef int int16;
+typedef unsigned int uint32;
+typedef signed int int32;
+#ifdef BITS64
+typedef unsigned long long int uint64;
+typedef signed long long int int64;
+#endif
+
+/*
+-------------------------------------------------------------------------------
+Each of the following `typedef's defines a type that holds integers
+of _exactly_ the number of bits specified.  For instance, for most
+implementation of C, `bits16' and `sbits16' should be `typedef'ed to
+`unsigned short int' and `signed short int' (or `short int'), respectively.
+-------------------------------------------------------------------------------
+*/
+typedef unsigned char bits8;
+typedef signed char sbits8;
+typedef unsigned short int bits16;
+typedef signed short int sbits16;
+typedef unsigned int bits32;
+typedef signed int sbits32;
+#ifdef BITS64
+typedef unsigned long long int bits64;
+typedef signed long long int sbits64;
+#endif
+
+#ifdef BITS64
+/*
+-------------------------------------------------------------------------------
+The `LIT64' macro takes as its argument a textual integer literal and
+if necessary ``marks'' the literal as having a 64-bit integer type.
+For example, the GNU C Compiler (`gcc') requires that 64-bit literals be
+appended with the letters `LL' standing for `long long', which is `gcc's
+name for the 64-bit integer type.  Some compilers may allow `LIT64' to be
+defined as the identity macro:  `#define LIT64( a ) a'.
+-------------------------------------------------------------------------------
+*/
+#define LIT64( a ) a##LL
+#endif
+
+/*
+-------------------------------------------------------------------------------
+The macro `INLINE' can be used before functions that should be inlined.  If
+a compiler does not support explicit inlining, this macro should be defined
+to be `static'.
+-------------------------------------------------------------------------------
+*/
+#define INLINE static __inline
+
+/*
+-------------------------------------------------------------------------------
+The ARM FPA is odd in that it stores doubles high-order word first, no matter
+what the endianness of the CPU.  VFP is sane.
+-------------------------------------------------------------------------------
+*/
+#if defined(SOFTFLOAT_FOR_GCC)
+#define FLOAT64_DEMANGLE(a)	(a)
+#define FLOAT64_MANGLE(a)	(a)
+#endif
diff --git a/lib/libc/powerpc/softfloat/softfloat.h b/lib/libc/powerpc/softfloat/softfloat.h
new file mode 100644
index 0000000..6b9c9b0
--- /dev/null
+++ b/lib/libc/powerpc/softfloat/softfloat.h
@@ -0,0 +1,307 @@
+/*	$NetBSD: softfloat.h,v 1.6 2002/05/12 13:12:46 bjh21 Exp $	*/
+/* $FreeBSD$ */
+
+/* This is a derivative work. */
+
+/*
+===============================================================================
+
+This C header file is part of the SoftFloat IEC/IEEE Floating-point
+Arithmetic Package, Release 2a.
+
+Written by John R. Hauser.  This work was made possible in part by the
+International Computer Science Institute, located at Suite 600, 1947 Center
+Street, Berkeley, California 94704.  Funding was partially provided by the
+National Science Foundation under grant MIP-9311980.  The original version
+of this code was written as part of a project to build a fixed-point vector
+processor in collaboration with the University of California at Berkeley,
+overseen by Profs. Nelson Morgan and John Wawrzynek.  More information
+is available through the Web page `http://HTTP.CS.Berkeley.EDU/~jhauser/
+arithmetic/SoftFloat.html'.
+
+THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort
+has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT
+TIMES RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO
+PERSONS AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ANY
+AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE.
+
+Derivative works are acceptable, even for commercial purposes, so long as
+(1) they include prominent notice that the work is derivative, and (2) they
+include prominent notice akin to these four paragraphs for those parts of
+this code that are retained.
+
+===============================================================================
+*/
+
+/*
+-------------------------------------------------------------------------------
+The macro `FLOATX80' must be defined to enable the extended double-precision
+floating-point format `floatx80'.  If this macro is not defined, the
+`floatx80' type will not be defined, and none of the functions that either
+input or output the `floatx80' type will be defined.  The same applies to
+the `FLOAT128' macro and the quadruple-precision format `float128'.
+-------------------------------------------------------------------------------
+*/
+/* #define FLOATX80 */
+/* #define FLOAT128 */
+
+#include <machine/ieeefp.h>
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE floating-point types.
+-------------------------------------------------------------------------------
+*/
+typedef unsigned int float32;
+typedef unsigned long long float64;
+#ifdef FLOATX80
+typedef struct {
+    unsigned short high;
+    unsigned long long low;
+} floatx80;
+#endif
+#ifdef FLOAT128
+typedef struct {
+    unsigned long long high, low;
+} float128;
+#endif
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE floating-point underflow tininess-detection mode.
+-------------------------------------------------------------------------------
+*/
+#ifndef SOFTFLOAT_FOR_GCC
+extern int8 float_detect_tininess;
+#endif
+enum {
+    float_tininess_after_rounding  = 0,
+    float_tininess_before_rounding = 1
+};
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE floating-point rounding mode.
+-------------------------------------------------------------------------------
+*/
+extern fp_rnd_t float_rounding_mode;
+enum {
+    float_round_nearest_even = FP_RN,
+    float_round_to_zero      = FP_RZ,
+    float_round_down         = FP_RM,
+    float_round_up           = FP_RP
+};
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE floating-point exception flags.
+-------------------------------------------------------------------------------
+*/
+typedef fp_except_t fp_except;
+
+extern fp_except float_exception_flags;
+extern fp_except float_exception_mask;
+enum {
+    float_flag_inexact   = FP_X_IMP,
+    float_flag_underflow = FP_X_UFL,
+    float_flag_overflow  = FP_X_OFL,
+    float_flag_divbyzero = FP_X_DZ,
+    float_flag_invalid   = FP_X_INV
+};
+
+/*
+-------------------------------------------------------------------------------
+Routine to raise any or all of the software IEC/IEEE floating-point
+exception flags.
+-------------------------------------------------------------------------------
+*/
+void float_raise( fp_except );
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE integer-to-floating-point conversion routines.
+-------------------------------------------------------------------------------
+*/
+float32 int32_to_float32( int );
+float64 int32_to_float64( int );
+#ifdef FLOATX80
+floatx80 int32_to_floatx80( int );
+#endif
+#ifdef FLOAT128
+float128 int32_to_float128( int );
+#endif
+float32 int64_to_float32( long long );
+float64 int64_to_float64( long long );
+#ifdef FLOATX80
+floatx80 int64_to_floatx80( long long );
+#endif
+#ifdef FLOAT128
+float128 int64_to_float128( long long );
+#endif
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE single-precision conversion routines.
+-------------------------------------------------------------------------------
+*/
+int float32_to_int32( float32 );
+int float32_to_int32_round_to_zero( float32 );
+unsigned int float32_to_uint32_round_to_zero( float32 );
+long long float32_to_int64( float32 );
+long long float32_to_int64_round_to_zero( float32 );
+float64 float32_to_float64( float32 );
+#ifdef FLOATX80
+floatx80 float32_to_floatx80( float32 );
+#endif
+#ifdef FLOAT128
+float128 float32_to_float128( float32 );
+#endif
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE single-precision operations.
+-------------------------------------------------------------------------------
+*/
+float32 float32_round_to_int( float32 );
+float32 float32_add( float32, float32 );
+float32 float32_sub( float32, float32 );
+float32 float32_mul( float32, float32 );
+float32 float32_div( float32, float32 );
+float32 float32_rem( float32, float32 );
+float32 float32_sqrt( float32 );
+int float32_eq( float32, float32 );
+int float32_le( float32, float32 );
+int float32_lt( float32, float32 );
+int float32_eq_signaling( float32, float32 );
+int float32_le_quiet( float32, float32 );
+int float32_lt_quiet( float32, float32 );
+#ifndef SOFTFLOAT_FOR_GCC
+int float32_is_signaling_nan( float32 );
+#endif
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE double-precision conversion routines.
+-------------------------------------------------------------------------------
+*/
+int float64_to_int32( float64 );
+int float64_to_int32_round_to_zero( float64 );
+unsigned int float64_to_uint32_round_to_zero( float64 );
+long long float64_to_int64( float64 );
+long long float64_to_int64_round_to_zero( float64 );
+float32 float64_to_float32( float64 );
+#ifdef FLOATX80
+floatx80 float64_to_floatx80( float64 );
+#endif
+#ifdef FLOAT128
+float128 float64_to_float128( float64 );
+#endif
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE double-precision operations.
+-------------------------------------------------------------------------------
+*/
+float64 float64_round_to_int( float64 );
+float64 float64_add( float64, float64 );
+float64 float64_sub( float64, float64 );
+float64 float64_mul( float64, float64 );
+float64 float64_div( float64, float64 );
+float64 float64_rem( float64, float64 );
+float64 float64_sqrt( float64 );
+int float64_eq( float64, float64 );
+int float64_le( float64, float64 );
+int float64_lt( float64, float64 );
+int float64_eq_signaling( float64, float64 );
+int float64_le_quiet( float64, float64 );
+int float64_lt_quiet( float64, float64 );
+#ifndef SOFTFLOAT_FOR_GCC
+int float64_is_signaling_nan( float64 );
+#endif
+
+#ifdef FLOATX80
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE extended double-precision conversion routines.
+-------------------------------------------------------------------------------
+*/
+int floatx80_to_int32( floatx80 );
+int floatx80_to_int32_round_to_zero( floatx80 );
+long long floatx80_to_int64( floatx80 );
+long long floatx80_to_int64_round_to_zero( floatx80 );
+float32 floatx80_to_float32( floatx80 );
+float64 floatx80_to_float64( floatx80 );
+#ifdef FLOAT128
+float128 floatx80_to_float128( floatx80 );
+#endif
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE extended double-precision rounding precision.  Valid
+values are 32, 64, and 80.
+-------------------------------------------------------------------------------
+*/
+extern int floatx80_rounding_precision;
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE extended double-precision operations.
+-------------------------------------------------------------------------------
+*/
+floatx80 floatx80_round_to_int( floatx80 );
+floatx80 floatx80_add( floatx80, floatx80 );
+floatx80 floatx80_sub( floatx80, floatx80 );
+floatx80 floatx80_mul( floatx80, floatx80 );
+floatx80 floatx80_div( floatx80, floatx80 );
+floatx80 floatx80_rem( floatx80, floatx80 );
+floatx80 floatx80_sqrt( floatx80 );
+int floatx80_eq( floatx80, floatx80 );
+int floatx80_le( floatx80, floatx80 );
+int floatx80_lt( floatx80, floatx80 );
+int floatx80_eq_signaling( floatx80, floatx80 );
+int floatx80_le_quiet( floatx80, floatx80 );
+int floatx80_lt_quiet( floatx80, floatx80 );
+int floatx80_is_signaling_nan( floatx80 );
+
+#endif
+
+#ifdef FLOAT128
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE quadruple-precision conversion routines.
+-------------------------------------------------------------------------------
+*/
+int float128_to_int32( float128 );
+int float128_to_int32_round_to_zero( float128 );
+long long float128_to_int64( float128 );
+long long float128_to_int64_round_to_zero( float128 );
+float32 float128_to_float32( float128 );
+float64 float128_to_float64( float128 );
+#ifdef FLOATX80
+floatx80 float128_to_floatx80( float128 );
+#endif
+
+/*
+-------------------------------------------------------------------------------
+Software IEC/IEEE quadruple-precision operations.
+-------------------------------------------------------------------------------
+*/
+float128 float128_round_to_int( float128 );
+float128 float128_add( float128, float128 );
+float128 float128_sub( float128, float128 );
+float128 float128_mul( float128, float128 );
+float128 float128_div( float128, float128 );
+float128 float128_rem( float128, float128 );
+float128 float128_sqrt( float128 );
+int float128_eq( float128, float128 );
+int float128_le( float128, float128 );
+int float128_lt( float128, float128 );
+int float128_eq_signaling( float128, float128 );
+int float128_le_quiet( float128, float128 );
+int float128_lt_quiet( float128, float128 );
+int float128_is_signaling_nan( float128 );
+
+#endif
+