This is the mail archive of the
libc-alpha@sources.redhat.com
mailing list for the glibc project.
Re: add alpha 128-bit ieee support routines
- From: Richard Henderson <rth at twiddle dot net>
- To: libc-alpha at sources dot redhat dot com
- Date: Sat, 6 Mar 2004 12:55:05 -0800
- Subject: Re: add alpha 128-bit ieee support routines
- References: <20040306204731.GA2539@twiddle.net>
Grr. Wrong patch file.
r~
Index: soft-fp/quad.h
===================================================================
RCS file: /cvs/glibc/libc/soft-fp/quad.h,v
retrieving revision 1.2
diff -c -p -d -r1.2 quad.h
*** soft-fp/quad.h 6 Jul 2001 04:55:40 -0000 1.2
--- soft-fp/quad.h 6 Mar 2004 20:32:49 -0000
*************** union _FP_UNION_Q
*** 131,136 ****
--- 131,139 ----
{
long double flt /* __attribute__((mode(TF))) */ ;
struct {
+ _FP_W_TYPE a, b;
+ } longs;
+ struct {
#if __BYTE_ORDER == __BIG_ENDIAN
unsigned sign : 1;
unsigned exp : _FP_EXPBITS_Q;
Index: sysdeps/alpha/Implies
===================================================================
RCS file: /cvs/glibc/libc/sysdeps/alpha/Implies,v
retrieving revision 1.3
diff -c -p -d -r1.3 Implies
*** sysdeps/alpha/Implies 13 Jul 1999 23:06:22 -0000 1.3
--- sysdeps/alpha/Implies 6 Mar 2004 20:32:49 -0000
*************** wordsize-64
*** 2,4 ****
--- 2,5 ----
# Alpha uses IEEE 754 single and double precision floating point.
ieee754/flt-32
ieee754/dbl-64
+ alpha/soft-fp
Index: sysdeps/alpha/Subdirs
===================================================================
RCS file: sysdeps/alpha/Subdirs
diff -N sysdeps/alpha/Subdirs
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- sysdeps/alpha/Subdirs 6 Mar 2004 20:32:49 -0000
***************
*** 0 ****
--- 1 ----
+ soft-fp
Index: sysdeps/alpha/soft-fp/Dist
===================================================================
RCS file: /cvs/glibc/libc/sysdeps/alpha/soft-fp/Dist,v
retrieving revision 1.1
diff -c -p -d -r1.1 Dist
*** sysdeps/alpha/soft-fp/Dist 6 Sep 2000 10:52:05 -0000 1.1
--- sysdeps/alpha/soft-fp/Dist 6 Mar 2004 20:32:49 -0000
***************
*** 1 ****
--- 1,14 ----
+ local-soft-fp.h
+ ots_add.c
+ ots_cmp.c
+ ots_cmpe.c
+ ots_cvtqux.c
+ ots_cvtqx.c
+ ots_cvttx.c
+ ots_cvtxq.c
+ ots_cvtxt.c
+ ots_div.c
+ ots_mul.c
+ ots_nintxq.c
+ ots_sub.c
sfp-machine.h
Index: sysdeps/alpha/soft-fp/Makefile
===================================================================
RCS file: sysdeps/alpha/soft-fp/Makefile
diff -N sysdeps/alpha/soft-fp/Makefile
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- sysdeps/alpha/soft-fp/Makefile 6 Mar 2004 20:32:49 -0000
***************
*** 0 ****
--- 1,6 ----
+ # Software floating-point emulation.
+
+ ifeq ($(subdir),soft-fp)
+ sysdep_routines += ots_add ots_sub ots_mul ots_div ots_cmp ots_cmpe \
+ ots_cvtxq ots_cvtqx ots_cvtqux ots_cvttx ots_cvtxt ots_nintxq
+ endif
Index: sysdeps/alpha/soft-fp/Versions
===================================================================
RCS file: sysdeps/alpha/soft-fp/Versions
diff -N sysdeps/alpha/soft-fp/Versions
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- sysdeps/alpha/soft-fp/Versions 6 Mar 2004 20:32:49 -0000
***************
*** 0 ****
--- 1,8 ----
+ libc {
+ GLIBC_2.3.4 {
+ _OtsAddX; _OtsSubX; _OtsMulX; _OtsDivX;
+ _OtsEqlX; _OtsNeqX; _OtsLssX; _OtsLeqX; _OtsGtrX; _OtsGeqX;
+ _OtsCvtQX; _OtsCvtQUX; _OtsCvtXQ; _OtsNintXQ;
+ _OtsConvertFloatTX; _OtsConvertFloatXT;
+ }
+ }
Index: sysdeps/alpha/soft-fp/local-soft-fp.h
===================================================================
RCS file: sysdeps/alpha/soft-fp/local-soft-fp.h
diff -N sysdeps/alpha/soft-fp/local-soft-fp.h
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- sysdeps/alpha/soft-fp/local-soft-fp.h 6 Mar 2004 20:32:49 -0000
***************
*** 0 ****
--- 1,44 ----
+ #include <stdlib.h>
+ #include <soft-fp.h>
+ #include <quad.h>
+
+ /* Helpers for the Ots functions which receive long double arguments
+ in two integer registers, and return values in $16+$17. */
+
+ #undef _FP_UNPACK_RAW_2
+ #define _FP_UNPACK_RAW_2(fs, X, val) \
+ do { \
+ union _FP_UNION_##fs _flo; \
+ _flo.longs.a = val##l; \
+ _flo.longs.b = val##h; \
+ X##_f0 = _flo.bits.frac0; \
+ X##_f1 = _flo.bits.frac1; \
+ X##_e = _flo.bits.exp; \
+ X##_s = _flo.bits.sign; \
+ } while (0)
+
+ #undef _FP_PACK_RAW_2
+ #define _FP_PACK_RAW_2(fs, val, X) \
+ do { \
+ union _FP_UNION_##fs _flo; \
+ _flo.bits.frac0 = X##_f0; \
+ _flo.bits.frac1 = X##_f1; \
+ _flo.bits.exp = X##_e; \
+ _flo.bits.sign = X##_s; \
+ val##l = _flo.longs.a; \
+ val##h = _flo.longs.b; \
+ } while (0)
+
+ #define FP_DECL_RETURN(X) \
+ long X##l, X##h
+
+ /* ??? We don't have a real way to tell the compiler that we're wanting
+ to return values in $16+$17. Instead use a volatile asm to make sure
+ that the values are live, and just hope that nothing kills the values
+ in between here and the end of the function. */
+ #define FP_RETURN(X) \
+ do { \
+ register long r16 __asm__("16") = X##l; \
+ register long r17 __asm__("17") = X##h; \
+ asm volatile ("" : : "r"(r16), "r"(r17)); \
+ } while (0)
Index: sysdeps/alpha/soft-fp/ots_add.c
===================================================================
RCS file: sysdeps/alpha/soft-fp/ots_add.c
diff -N sysdeps/alpha/soft-fp/ots_add.c
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- sysdeps/alpha/soft-fp/ots_add.c 6 Mar 2004 20:32:49 -0000
***************
*** 0 ****
--- 1,39 ----
+ /* Software floating-point emulation: addition.
+ Copyright (C) 1997,1999,2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@cygnus.com) and
+ Jakub Jelinek (jj@ultra.linux.cz).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ 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
+ Lesser General Public License for more details.
+
+ 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. */
+
+ #include "local-soft-fp.h"
+
+ void
+ _OtsAddX(long al, long ah, long bl, long bh, long _round)
+ {
+ FP_DECL_EX;
+ FP_DECL_Q(A); FP_DECL_Q(B); FP_DECL_Q(C);
+ FP_DECL_RETURN(c);
+
+ FP_INIT_ROUNDMODE;
+ FP_UNPACK_Q(A, a);
+ FP_UNPACK_Q(B, b);
+ FP_ADD_Q(C, A, B);
+ FP_PACK_Q(c, C);
+ FP_HANDLE_EXCEPTIONS;
+
+ FP_RETURN(c);
+ }
Index: sysdeps/alpha/soft-fp/ots_cmp.c
===================================================================
RCS file: sysdeps/alpha/soft-fp/ots_cmp.c
diff -N sysdeps/alpha/soft-fp/ots_cmp.c
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- sysdeps/alpha/soft-fp/ots_cmp.c 6 Mar 2004 20:32:49 -0000
***************
*** 0 ****
--- 1,64 ----
+ /* Software floating-point emulation: comparison.
+ Copyright (C) 1997,1999,2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@cygnus.com) and
+ Jakub Jelinek (jj@ultra.linux.cz).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ 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
+ Lesser General Public License for more details.
+
+ 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. */
+
+ #include "local-soft-fp.h"
+
+ static long
+ internal_equality (long al, long ah, long bl, long bh, long neq)
+ {
+ FP_DECL_EX;
+ FP_DECL_Q(A); FP_DECL_Q(B);
+ long r;
+
+ FP_UNPACK_RAW_Q(A, a);
+ FP_UNPACK_RAW_Q(B, b);
+
+ if ((A_e == _FP_EXPMAX_Q && !_FP_FRAC_ZEROP_2(A))
+ || (B_e == _FP_EXPMAX_Q && !_FP_FRAC_ZEROP_2(B)))
+ {
+ /* EQ and NE signal invalid operation only if either operand is SNaN. */
+ if (FP_ISSIGNAN_Q(A) || FP_ISSIGNAN_Q(B))
+ {
+ FP_SET_EXCEPTION(FP_EX_INVALID);
+ FP_HANDLE_EXCEPTIONS;
+ }
+ return -1;
+ }
+
+ r = (A_e == B_e
+ && _FP_FRAC_EQ_2 (A, B)
+ && (A_s == B_s || (!A_e && _FP_FRAC_ZEROP_2(A))));
+ r ^= neq;
+
+ return r;
+ }
+
+ long
+ _OtsEqlX (long al, long ah, long bl, long bh)
+ {
+ return internal_equality (al, ah, bl, bh, 0);
+ }
+
+ long
+ _OtsNeqX (long al, long ah, long bl, long bh)
+ {
+ return internal_equality (al, ah, bl, bh, 1);
+ }
Index: sysdeps/alpha/soft-fp/ots_cmpe.c
===================================================================
RCS file: sysdeps/alpha/soft-fp/ots_cmpe.c
diff -N sysdeps/alpha/soft-fp/ots_cmpe.c
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- sysdeps/alpha/soft-fp/ots_cmpe.c 6 Mar 2004 20:32:49 -0000
***************
*** 0 ****
--- 1,83 ----
+ /* Software floating-point emulation: comparison.
+ Copyright (C) 1997,1999,2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@cygnus.com) and
+ Jakub Jelinek (jj@ultra.linux.cz).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ 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
+ Lesser General Public License for more details.
+
+ 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. */
+
+ #include "local-soft-fp.h"
+
+ static long
+ internal_compare (long al, long ah, long bl, long bh)
+ {
+ FP_DECL_EX;
+ FP_DECL_Q(A); FP_DECL_Q(B);
+ long r;
+
+ FP_UNPACK_RAW_Q(A, a);
+ FP_UNPACK_RAW_Q(B, b);
+ FP_CMP_Q (r, A, B, 2);
+
+ /* Relative comparisons signal invalid operation if either operand is NaN. */
+ if (r == 2)
+ {
+ FP_SET_EXCEPTION(FP_EX_INVALID);
+ FP_HANDLE_EXCEPTIONS;
+ }
+
+ return r;
+ }
+
+ long
+ _OtsLssX (long al, long ah, long bl, long bh)
+ {
+ long r = internal_compare (al, ah, bl, bh);
+ if (r == 2)
+ return -1;
+ else
+ return r < 0;
+ }
+
+ long
+ _OtsLeqX (long al, long ah, long bl, long bh)
+ {
+ long r = internal_compare (al, ah, bl, bh);
+ if (r == 2)
+ return -1;
+ else
+ return r <= 0;
+ }
+
+ long
+ _OtsGtrX (long al, long ah, long bl, long bh)
+ {
+ long r = internal_compare (al, ah, bl, bh);
+ if (r == 2)
+ return -1;
+ else
+ return r > 0;
+ }
+
+ long
+ _OtsGeqX (long al, long ah, long bl, long bh)
+ {
+ long r = internal_compare (al, ah, bl, bh);
+ if (r == 2)
+ return -1;
+ else
+ return r >= 0;
+ }
Index: sysdeps/alpha/soft-fp/ots_cvtqux.c
===================================================================
RCS file: sysdeps/alpha/soft-fp/ots_cvtqux.c
diff -N sysdeps/alpha/soft-fp/ots_cvtqux.c
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- sysdeps/alpha/soft-fp/ots_cvtqux.c 6 Mar 2004 20:32:49 -0000
***************
*** 0 ****
--- 1,40 ----
+ /* Software floating-point emulation: unsigned integer to float conversion.
+ Copyright (C) 1997,1999,2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@cygnus.com) and
+ Jakub Jelinek (jj@ultra.linux.cz).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ 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
+ Lesser General Public License for more details.
+
+ 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. */
+
+ #include "local-soft-fp.h"
+
+ /* Should never actually be used, since we've more bits of precision
+ than the incomming long, but needed for linkage. */
+ #undef FP_ROUNDMODE
+ #define FP_ROUNDMODE FP_RND_ZERO
+
+ void
+ _OtsCvtQUX (unsigned long a)
+ {
+ FP_DECL_EX;
+ FP_DECL_Q(C);
+ FP_DECL_RETURN(c);
+
+ FP_FROM_INT_Q(C, a, 64, long);
+ FP_PACK_Q(c, C);
+
+ FP_RETURN(c);
+ }
Index: sysdeps/alpha/soft-fp/ots_cvtqx.c
===================================================================
RCS file: sysdeps/alpha/soft-fp/ots_cvtqx.c
diff -N sysdeps/alpha/soft-fp/ots_cvtqx.c
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- sysdeps/alpha/soft-fp/ots_cvtqx.c 6 Mar 2004 20:32:49 -0000
***************
*** 0 ****
--- 1,39 ----
+ /* Software floating-point emulation: signed integer to float conversion.
+ Copyright (C) 1997,1999,2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@cygnus.com) and
+ Jakub Jelinek (jj@ultra.linux.cz).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ 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
+ Lesser General Public License for more details.
+
+ 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. */
+
+ #include "local-soft-fp.h"
+
+ /* Should never actually be used, since we've more bits of precision
+ than the incomming long, but needed for linkage. */
+ #undef FP_ROUNDMODE
+ #define FP_ROUNDMODE FP_RND_ZERO
+
+ void
+ _OtsCvtQX (long a)
+ {
+ FP_DECL_EX;
+ FP_DECL_Q(C);
+ FP_DECL_RETURN(c);
+
+ FP_FROM_INT_Q(C, a, 64, long);
+ FP_PACK_Q(c, C);
+ FP_RETURN(c);
+ }
Index: sysdeps/alpha/soft-fp/ots_cvttx.c
===================================================================
RCS file: sysdeps/alpha/soft-fp/ots_cvttx.c
diff -N sysdeps/alpha/soft-fp/ots_cvttx.c
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- sysdeps/alpha/soft-fp/ots_cvttx.c 6 Mar 2004 20:32:49 -0000
***************
*** 0 ****
--- 1,48 ----
+ /* Software floating-point emulation: floating point extension.
+ Copyright (C) 1997,1999,2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@cygnus.com) and
+ Jakub Jelinek (jj@ultra.linux.cz).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ 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
+ Lesser General Public License for more details.
+
+ 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. */
+
+ #include "local-soft-fp.h"
+ #include "double.h"
+
+ /* Should never actually be used, since we're extending, but needed
+ for linkage. */
+ #undef FP_ROUNDMODE
+ #define FP_ROUNDMODE FP_RND_ZERO
+
+ void
+ _OtsConvertFloatTX(double a)
+ {
+ FP_DECL_EX;
+ FP_DECL_D(A);
+ FP_DECL_Q(C);
+ FP_DECL_RETURN(c);
+
+ FP_UNPACK_D(A, a);
+ #if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q
+ FP_CONV(Q,D,4,2,C,A);
+ #else
+ FP_CONV(Q,D,2,1,C,A);
+ #endif
+ FP_PACK_Q(c, C);
+ FP_HANDLE_EXCEPTIONS;
+
+ FP_RETURN(c);
+ }
Index: sysdeps/alpha/soft-fp/ots_cvtxq.c
===================================================================
RCS file: sysdeps/alpha/soft-fp/ots_cvtxq.c
diff -N sysdeps/alpha/soft-fp/ots_cvtxq.c
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- sysdeps/alpha/soft-fp/ots_cvtxq.c 6 Mar 2004 20:32:49 -0000
***************
*** 0 ****
--- 1,43 ----
+ /* Software floating-point emulation: float to integer conversion.
+ Copyright (C) 1997,1999,2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@cygnus.com) and
+ Jakub Jelinek (jj@ultra.linux.cz).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ 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
+ Lesser General Public License for more details.
+
+ 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. */
+
+ #include "local-soft-fp.h"
+
+ long
+ _OtsCvtXQ (long al, long ah, long _round)
+ {
+ FP_DECL_EX;
+ FP_DECL_Q(A);
+ long r, s;
+
+ /* If bit 3 is set, then integer overflow detection is requested. */
+ s = _round & 8 ? 1 : -1;
+ _round = _round & 3;
+
+ FP_INIT_ROUNDMODE;
+ FP_UNPACK_Q(A, a);
+ FP_TO_INT_Q(r, A, 64, s);
+
+ if (s > 0 && (_fex &= FP_EX_INVALID))
+ FP_HANDLE_EXCEPTIONS;
+
+ return r;
+ }
Index: sysdeps/alpha/soft-fp/ots_cvtxt.c
===================================================================
RCS file: sysdeps/alpha/soft-fp/ots_cvtxt.c
diff -N sysdeps/alpha/soft-fp/ots_cvtxt.c
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- sysdeps/alpha/soft-fp/ots_cvtxt.c 6 Mar 2004 20:32:49 -0000
***************
*** 0 ****
--- 1,44 ----
+ /* Software floating-point emulation: floating point truncation.
+ Copyright (C) 1997,1999,2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@cygnus.com) and
+ Jakub Jelinek (jj@ultra.linux.cz).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ 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
+ Lesser General Public License for more details.
+
+ 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. */
+
+ #include "local-soft-fp.h"
+ #include "double.h"
+
+ double
+ _Ots_ConvertFloatXT (long al, long ah, long _round)
+ {
+ FP_DECL_EX;
+ FP_DECL_Q(A);
+ FP_DECL_D(R);
+ double r;
+
+ FP_INIT_ROUNDMODE;
+ FP_UNPACK_Q(A, a);
+ #if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q
+ FP_CONV(D,Q,2,4,R,A);
+ #else
+ FP_CONV(D,Q,1,2,R,A);
+ #endif
+ FP_PACK_D(r, R);
+ FP_HANDLE_EXCEPTIONS;
+
+ return r;
+ }
Index: sysdeps/alpha/soft-fp/ots_div.c
===================================================================
RCS file: sysdeps/alpha/soft-fp/ots_div.c
diff -N sysdeps/alpha/soft-fp/ots_div.c
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- sysdeps/alpha/soft-fp/ots_div.c 6 Mar 2004 20:32:49 -0000
***************
*** 0 ****
--- 1,39 ----
+ /* Software floating-point emulation: division.
+ Copyright (C) 1997,1999,2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@cygnus.com) and
+ Jakub Jelinek (jj@ultra.linux.cz).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ 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
+ Lesser General Public License for more details.
+
+ 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. */
+
+ #include "local-soft-fp.h"
+
+ void
+ _OtsDivX(long al, long ah, long bl, long bh, long _round)
+ {
+ FP_DECL_EX;
+ FP_DECL_Q(A); FP_DECL_Q(B); FP_DECL_Q(C);
+ FP_DECL_RETURN(c);
+
+ FP_INIT_ROUNDMODE;
+ FP_UNPACK_Q(A, a);
+ FP_UNPACK_Q(B, b);
+ FP_DIV_Q(C, A, B);
+ FP_PACK_Q(c, C);
+ FP_HANDLE_EXCEPTIONS;
+
+ FP_RETURN(c);
+ }
Index: sysdeps/alpha/soft-fp/ots_mul.c
===================================================================
RCS file: sysdeps/alpha/soft-fp/ots_mul.c
diff -N sysdeps/alpha/soft-fp/ots_mul.c
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- sysdeps/alpha/soft-fp/ots_mul.c 6 Mar 2004 20:32:49 -0000
***************
*** 0 ****
--- 1,39 ----
+ /* Software floating-point emulation: multiplication.
+ Copyright (C) 1997,1999,2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@cygnus.com) and
+ Jakub Jelinek (jj@ultra.linux.cz).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ 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
+ Lesser General Public License for more details.
+
+ 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. */
+
+ #include "local-soft-fp.h"
+
+ void
+ _OtsMulX(long al, long ah, long bl, long bh, long _round)
+ {
+ FP_DECL_EX;
+ FP_DECL_Q(A); FP_DECL_Q(B); FP_DECL_Q(C);
+ FP_DECL_RETURN(c);
+
+ FP_INIT_ROUNDMODE;
+ FP_UNPACK_Q(A, a);
+ FP_UNPACK_Q(B, b);
+ FP_MUL_Q(C, A, B);
+ FP_PACK_Q(c, C);
+ FP_HANDLE_EXCEPTIONS;
+
+ FP_RETURN(c);
+ }
Index: sysdeps/alpha/soft-fp/ots_nintxq.c
===================================================================
RCS file: sysdeps/alpha/soft-fp/ots_nintxq.c
diff -N sysdeps/alpha/soft-fp/ots_nintxq.c
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- sysdeps/alpha/soft-fp/ots_nintxq.c 6 Mar 2004 20:32:49 -0000
***************
*** 0 ****
--- 1,50 ----
+ /* Software floating-point emulation: convert to fortran nearest.
+ Copyright (C) 1997,1999,2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@cygnus.com) and
+ Jakub Jelinek (jj@ultra.linux.cz).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ 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
+ Lesser General Public License for more details.
+
+ 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. */
+
+ #include "local-soft-fp.h"
+
+ long
+ _OtsNintXQ (long al, long ah, long _round)
+ {
+ FP_DECL_EX;
+ FP_DECL_Q(A); FP_DECL_Q(B); FP_DECL_Q(C);
+ long r, s;
+
+ /* If bit 3 is set, then integer overflow detection is requested. */
+ s = _round & 8 ? 1 : -1;
+ _round = _round & 3;
+
+ FP_INIT_ROUNDMODE;
+ FP_UNPACK_Q(A, a);
+
+ /* Build 0.5 * sign(A) */
+ B_e = _FP_EXPBIAS_Q;
+ __FP_FRAC_SET_2 (B, _FP_IMPLBIT_Q, 0);
+ B_s = A_s;
+ _FP_UNPACK_CANONICAL(Q,2,B);
+
+ FP_ADD_Q(C, A, B);
+ FP_TO_INT_Q(r, C, 64, s);
+ if (s > 0 && (_fex &= FP_EX_INVALID))
+ FP_HANDLE_EXCEPTIONS;
+
+ return r;
+ }
Index: sysdeps/alpha/soft-fp/ots_sub.c
===================================================================
RCS file: sysdeps/alpha/soft-fp/ots_sub.c
diff -N sysdeps/alpha/soft-fp/ots_sub.c
*** /dev/null 1 Jan 1970 00:00:00 -0000
--- sysdeps/alpha/soft-fp/ots_sub.c 6 Mar 2004 20:32:49 -0000
***************
*** 0 ****
--- 1,39 ----
+ /* Software floating-point emulation: subtraction.
+ Copyright (C) 1997,1999,2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@cygnus.com) and
+ Jakub Jelinek (jj@ultra.linux.cz).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ 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
+ Lesser General Public License for more details.
+
+ 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. */
+
+ #include "local-soft-fp.h"
+
+ void
+ _OtsSubX(long al, long ah, long bl, long bh, long _round)
+ {
+ FP_DECL_EX;
+ FP_DECL_Q(A); FP_DECL_Q(B); FP_DECL_Q(C);
+ FP_DECL_RETURN(c);
+
+ FP_INIT_ROUNDMODE;
+ FP_UNPACK_Q(A, a);
+ FP_UNPACK_Q(B, b);
+ FP_SUB_Q(C, A, B);
+ FP_PACK_Q(c, C);
+ FP_HANDLE_EXCEPTIONS;
+
+ FP_RETURN(c);
+ }
Index: sysdeps/alpha/soft-fp/sfp-machine.h
===================================================================
RCS file: /cvs/glibc/libc/sysdeps/alpha/soft-fp/sfp-machine.h,v
retrieving revision 1.1
diff -c -p -d -r1.1 sfp-machine.h
*** sysdeps/alpha/soft-fp/sfp-machine.h 5 Sep 2000 08:40:54 -0000 1.1
--- sysdeps/alpha/soft-fp/sfp-machine.h 6 Mar 2004 20:32:49 -0000
***************
*** 1,35 ****
#define _FP_W_TYPE_SIZE 64
#define _FP_W_TYPE unsigned long
#define _FP_WS_TYPE signed long
#define _FP_I_TYPE long
- #define _alpha_mul_64_128(rhi, rlo, x, y) \
- __asm__("umulh %2,%3,%0; mulq %2,%3,%1" \
- : "=&r"(rhi), "=r"(rlo) : "r"(x), "r"(y))
-
#define _FP_MUL_MEAT_S(R,X,Y) \
_FP_MUL_MEAT_1_imm(_FP_WFRACBITS_S,R,X,Y)
#define _FP_MUL_MEAT_D(R,X,Y) \
! _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D,R,X,Y,_alpha_mul_64_128)
#define _FP_MUL_MEAT_Q(R,X,Y) \
! _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q,R,X,Y,_alpha_mul_64_128)
#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_imm(S,R,X,Y,_FP_DIV_HELP_imm)
! #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_1_udiv(D,R,X,Y)
#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y)
! #define _FP_NANFRAC_S _FP_QNANBIT_S
! #define _FP_NANFRAC_D _FP_QNANBIT_D
! #define _FP_NANFRAC_Q _FP_QNANBIT_Q, 0
! /* FIXME: This is just a wild guess */
! #define _FP_NANSIGN_S 1
! #define _FP_NANSIGN_D 1
! #define _FP_NANSIGN_Q 1
#define _FP_KEEPNANFRACP 1
! #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
! do { \
! R##_s = Y##_s; \
! _FP_FRAC_COPY_##wc(R,Y); \
! R##_c = FP_CLS_NAN; \
} while (0)
--- 1,94 ----
+ /* Machine-dependent software floating-point definitions.
+ Alpha userland IEEE 128-bit version.
+ Copyright (C) 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@cygnus.com),
+ Jakub Jelinek (jj@ultra.linux.cz) and
+ David S. Miller (davem@redhat.com).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ 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
+ Lesser General Public License for more details.
+
+ 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. */
+
+ #include <fenv_libc.h>
+
#define _FP_W_TYPE_SIZE 64
#define _FP_W_TYPE unsigned long
#define _FP_WS_TYPE signed long
#define _FP_I_TYPE long
#define _FP_MUL_MEAT_S(R,X,Y) \
_FP_MUL_MEAT_1_imm(_FP_WFRACBITS_S,R,X,Y)
#define _FP_MUL_MEAT_D(R,X,Y) \
! _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
#define _FP_MUL_MEAT_Q(R,X,Y) \
! _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_imm(S,R,X,Y,_FP_DIV_HELP_imm)
! #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_1_udiv_norm(D,R,X,Y)
#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y)
! #define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1)
! #define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1)
! #define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1
! #define _FP_NANSIGN_S 0
! #define _FP_NANSIGN_D 0
! #define _FP_NANSIGN_Q 0
#define _FP_KEEPNANFRACP 1
!
! /* Alpha Architecture Handbook, 4.7.10.4 sez that we should prefer any
! type of NaN in Fb, then Fa. */
! #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
! do { \
! R##_s = Y##_s; \
! _FP_FRAC_COPY_##wc(R,X); \
! R##_c = FP_CLS_NAN; \
} while (0)
+
+ /* Rounding mode settings. */
+ #define FP_RND_NEAREST FE_TONEAREST
+ #define FP_RND_ZERO FE_TOWARDZERO
+ #define FP_RND_PINF FE_UPWARD
+ #define FP_RND_MINF FE_DOWNWARD
+
+ /* Obtain the current rounding mode. It's given as an argument to
+ all the Ots functions, with 4 meaning "dynamic". */
+ #define FP_ROUNDMODE _round
+
+ /* Exception flags. */
+ #define FP_EX_INVALID FE_INVALID
+ #define FP_EX_OVERFLOW FE_OVERFLOW
+ #define FP_EX_UNDERFLOW FE_UNDERFLOW
+ #define FP_EX_DIVZERO FE_DIVBYZERO
+ #define FP_EX_INEXACT FE_INEXACT
+
+ #define FP_INIT_ROUNDMODE \
+ do { \
+ if (__builtin_expect (_round == 4, 0)) \
+ { \
+ unsigned long t; \
+ __asm__ __volatile__("excb; mf_fpcr %0" : "=f"(t)); \
+ _round = (t >> FPCR_ROUND_SHIFT) & 3; \
+ } \
+ } while (0)
+
+ #define FP_HANDLE_EXCEPTIONS \
+ do { \
+ if (__builtin_expect (_fex, 0)) \
+ { \
+ unsigned long t = __ieee_get_fp_control (); \
+ __ieee_set_fp_control (t | _fex); \
+ } \
+ } while (0)