summaryrefslogtreecommitdiffstats
path: root/arch/sparc/include/asm/sfp-machine_32.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc/include/asm/sfp-machine_32.h')
-rw-r--r--arch/sparc/include/asm/sfp-machine_32.h212
1 files changed, 212 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/sfp-machine_32.h b/arch/sparc/include/asm/sfp-machine_32.h
new file mode 100644
index 000000000..838c9d58f
--- /dev/null
+++ b/arch/sparc/include/asm/sfp-machine_32.h
@@ -0,0 +1,212 @@
+/* Machine-dependent software floating-point definitions.
+ Sparc userland (_Q_*) version.
+ Copyright (C) 1997,1998,1999 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),
+ David S. Miller (davem@redhat.com) and
+ Peter Maydell (pmaydell@chiark.greenend.org.uk).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If
+ not, write to the Free Software Foundation, Inc.,
+ 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#ifndef _SFP_MACHINE_H
+#define _SFP_MACHINE_H
+
+
+#define _FP_W_TYPE_SIZE 32
+#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_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
+#define _FP_MUL_MEAT_D(R,X,Y) \
+ _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
+#define _FP_MUL_MEAT_Q(R,X,Y) \
+ _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
+
+#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_udiv(S,R,X,Y)
+#define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y)
+#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y)
+
+#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1)
+#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1
+#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1
+#define _FP_NANSIGN_S 0
+#define _FP_NANSIGN_D 0
+#define _FP_NANSIGN_Q 0
+
+#define _FP_KEEPNANFRACP 1
+
+/* If one NaN is signaling and the other is not,
+ * we choose that one, otherwise we choose X.
+ */
+/* For _Qp_* and _Q_*, this should prefer X, for
+ * CPU instruction emulation this should prefer Y.
+ * (see SPAMv9 B.2.2 section).
+ */
+#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
+ do { \
+ if ((_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs) \
+ && !(_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs)) \
+ { \
+ R##_s = X##_s; \
+ _FP_FRAC_COPY_##wc(R,X); \
+ } \
+ else \
+ { \
+ R##_s = Y##_s; \
+ _FP_FRAC_COPY_##wc(R,Y); \
+ } \
+ R##_c = FP_CLS_NAN; \
+ } while (0)
+
+/* Some assembly to speed things up. */
+#define __FP_FRAC_ADD_3(r2,r1,r0,x2,x1,x0,y2,y1,y0) \
+ __asm__ ("addcc %r7,%8,%2\n\t" \
+ "addxcc %r5,%6,%1\n\t" \
+ "addx %r3,%4,%0\n" \
+ : "=r" (r2), \
+ "=&r" (r1), \
+ "=&r" (r0) \
+ : "%rJ" ((USItype)(x2)), \
+ "rI" ((USItype)(y2)), \
+ "%rJ" ((USItype)(x1)), \
+ "rI" ((USItype)(y1)), \
+ "%rJ" ((USItype)(x0)), \
+ "rI" ((USItype)(y0)) \
+ : "cc")
+
+#define __FP_FRAC_SUB_3(r2,r1,r0,x2,x1,x0,y2,y1,y0) \
+ __asm__ ("subcc %r7,%8,%2\n\t" \
+ "subxcc %r5,%6,%1\n\t" \
+ "subx %r3,%4,%0\n" \
+ : "=r" (r2), \
+ "=&r" (r1), \
+ "=&r" (r0) \
+ : "%rJ" ((USItype)(x2)), \
+ "rI" ((USItype)(y2)), \
+ "%rJ" ((USItype)(x1)), \
+ "rI" ((USItype)(y1)), \
+ "%rJ" ((USItype)(x0)), \
+ "rI" ((USItype)(y0)) \
+ : "cc")
+
+#define __FP_FRAC_ADD_4(r3,r2,r1,r0,x3,x2,x1,x0,y3,y2,y1,y0) \
+ do { \
+ /* We need to fool gcc, as we need to pass more than 10 \
+ input/outputs. */ \
+ register USItype _t1 __asm__ ("g1"), _t2 __asm__ ("g2"); \
+ __asm__ __volatile__ ( \
+ "addcc %r8,%9,%1\n\t" \
+ "addxcc %r6,%7,%0\n\t" \
+ "addxcc %r4,%5,%%g2\n\t" \
+ "addx %r2,%3,%%g1\n\t" \
+ : "=&r" (r1), \
+ "=&r" (r0) \
+ : "%rJ" ((USItype)(x3)), \
+ "rI" ((USItype)(y3)), \
+ "%rJ" ((USItype)(x2)), \
+ "rI" ((USItype)(y2)), \
+ "%rJ" ((USItype)(x1)), \
+ "rI" ((USItype)(y1)), \
+ "%rJ" ((USItype)(x0)), \
+ "rI" ((USItype)(y0)) \
+ : "cc", "g1", "g2"); \
+ __asm__ __volatile__ ("" : "=r" (_t1), "=r" (_t2)); \
+ r3 = _t1; r2 = _t2; \
+ } while (0)
+
+#define __FP_FRAC_SUB_4(r3,r2,r1,r0,x3,x2,x1,x0,y3,y2,y1,y0) \
+ do { \
+ /* We need to fool gcc, as we need to pass more than 10 \
+ input/outputs. */ \
+ register USItype _t1 __asm__ ("g1"), _t2 __asm__ ("g2"); \
+ __asm__ __volatile__ ( \
+ "subcc %r8,%9,%1\n\t" \
+ "subxcc %r6,%7,%0\n\t" \
+ "subxcc %r4,%5,%%g2\n\t" \
+ "subx %r2,%3,%%g1\n\t" \
+ : "=&r" (r1), \
+ "=&r" (r0) \
+ : "%rJ" ((USItype)(x3)), \
+ "rI" ((USItype)(y3)), \
+ "%rJ" ((USItype)(x2)), \
+ "rI" ((USItype)(y2)), \
+ "%rJ" ((USItype)(x1)), \
+ "rI" ((USItype)(y1)), \
+ "%rJ" ((USItype)(x0)), \
+ "rI" ((USItype)(y0)) \
+ : "cc", "g1", "g2"); \
+ __asm__ __volatile__ ("" : "=r" (_t1), "=r" (_t2)); \
+ r3 = _t1; r2 = _t2; \
+ } while (0)
+
+#define __FP_FRAC_DEC_3(x2,x1,x0,y2,y1,y0) __FP_FRAC_SUB_3(x2,x1,x0,x2,x1,x0,y2,y1,y0)
+
+#define __FP_FRAC_DEC_4(x3,x2,x1,x0,y3,y2,y1,y0) __FP_FRAC_SUB_4(x3,x2,x1,x0,x3,x2,x1,x0,y3,y2,y1,y0)
+
+#define __FP_FRAC_ADDI_4(x3,x2,x1,x0,i) \
+ __asm__ ("addcc %3,%4,%3\n\t" \
+ "addxcc %2,%%g0,%2\n\t" \
+ "addxcc %1,%%g0,%1\n\t" \
+ "addx %0,%%g0,%0\n\t" \
+ : "=&r" (x3), \
+ "=&r" (x2), \
+ "=&r" (x1), \
+ "=&r" (x0) \
+ : "rI" ((USItype)(i)), \
+ "0" ((USItype)(x3)), \
+ "1" ((USItype)(x2)), \
+ "2" ((USItype)(x1)), \
+ "3" ((USItype)(x0)) \
+ : "cc")
+
+#ifndef CONFIG_SMP
+extern struct task_struct *last_task_used_math;
+#endif
+
+/* Obtain the current rounding mode. */
+#ifndef FP_ROUNDMODE
+#ifdef CONFIG_SMP
+#define FP_ROUNDMODE ((current->thread.fsr >> 30) & 0x3)
+#else
+#define FP_ROUNDMODE ((last_task_used_math->thread.fsr >> 30) & 0x3)
+#endif
+#endif
+
+/* Exception flags. */
+#define FP_EX_INVALID (1 << 4)
+#define FP_EX_OVERFLOW (1 << 3)
+#define FP_EX_UNDERFLOW (1 << 2)
+#define FP_EX_DIVZERO (1 << 1)
+#define FP_EX_INEXACT (1 << 0)
+
+#define FP_HANDLE_EXCEPTIONS return _fex
+
+#ifdef CONFIG_SMP
+#define FP_INHIBIT_RESULTS ((current->thread.fsr >> 23) & _fex)
+#else
+#define FP_INHIBIT_RESULTS ((last_task_used_math->thread.fsr >> 23) & _fex)
+#endif
+
+#ifdef CONFIG_SMP
+#define FP_TRAPPING_EXCEPTIONS ((current->thread.fsr >> 23) & 0x1f)
+#else
+#define FP_TRAPPING_EXCEPTIONS ((last_task_used_math->thread.fsr >> 23) & 0x1f)
+#endif
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 22:30:41 +0000