sdcc-3.9.0 fork implementing GNU assembler syntax

This fork aims to provide better support for stm8-binutils

1 files changed, 104 insertions, 0 deletions

diff --git a/device/include/float.h b/device/include/float.h
new file mode 100644
index 0000000..ddc028c
--- /dev/null
+++ b/device/include/float.h
@@ -0,0 +1,104 @@
+/*-------------------------------------------------------------------------
+   float.h - ANSI functions forward declarations
+
+   Copyright (C) 1998, Sandeep Dutta . sandeep.dutta@usa.net
+
+   This library is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, or (at your option) any
+   later version.
+
+   This 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License 
+   along with this library; see the file COPYING. If not, write to the
+   Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA.
+
+   As a special exception, if you link this library with other files,
+   some of which are compiled with SDCC, to produce an executable,
+   this library does not by itself cause the resulting executable to
+   be covered by the GNU General Public License. This exception does
+   not however invalidate any other reasons why the executable file
+   might be covered by the GNU General Public License.
+-------------------------------------------------------------------------*/
+
+#ifndef __SDC51_FLOAT_H
+#define __SDC51_FLOAT_H 1
+
+#include <limits.h>
+
+#define FLT_RADIX       2
+#define FLT_MANT_DIG    24
+#define FLT_EPSILON     1.192092896E-07F
+#define FLT_DIG         6
+#define FLT_MIN_EXP     (-125)
+#define FLT_MIN         1.175494351E-38F
+#define FLT_MIN_10_EXP  (-37)
+#define FLT_MAX_EXP     (+128)
+#define FLT_MAX         3.402823466E+38F
+#define FLT_MAX_10_EXP  (+38)
+
+/* the following deal with IEEE single-precision numbers */
+#if defined(__SDCC_FLOAT_LIB)
+#define EXCESS		126
+#define SIGNBIT		((unsigned long)0x80000000)
+#define __INFINITY	((unsigned long)0x7F800000)
+#define HIDDEN		(unsigned long)(1ul << 23)
+#define SIGN(fp)	(((unsigned long)(fp) >> (8*sizeof(fp)-1)) & 1)
+#define EXP(fp)		(((unsigned long)(fp) >> 23) & (unsigned int) 0x00FF)
+#define MANT(fp)	(((fp) & (unsigned long)0x007FFFFF) | HIDDEN)
+#define NORM            0xff000000
+#define PACK(s,e,m)	((s) | ((unsigned long)(e) << 23) | (m))
+#endif
+
+float __uchar2fs (unsigned char);
+float __schar2fs (signed char);
+float __uint2fs (unsigned int);
+float __sint2fs (signed int);
+float __ulong2fs (unsigned long);
+float __slong2fs (signed long);
+unsigned char __fs2uchar (float);
+signed char __fs2schar (float);
+unsigned int __fs2uint (float);
+signed int __fs2sint (float);
+unsigned long __fs2ulong (float);
+signed long __fs2slong (float);
+
+float __fsadd (float, float);
+float __fssub (float, float);
+float __fsmul (float, float);
+float __fsdiv (float, float);
+
+char __fslt (float, float);
+char __fseq (float, float);
+char __fsgt (float, float);
+
+
+#if defined(__SDCC_FLOAT_LIB) && defined(__SDCC_mcs51) && !defined(__SDCC_USE_XSTACK) && !defined(_SDCC_NO_ASM_LIB_FUNCS)
+
+#define FLOAT_ASM_MCS51
+
+/* This adds extra code for proper round-off, in
+   an attempt to match the results from gcc. */
+#define FLOAT_FULL_ACCURACY
+
+/* This adds about 66 bytes to the code size and
+   significantly speeds up shift operations more
+   than 8 bits (common when subtracting numbers
+   of significantly different magnitude and scaling
+   to fixed point) */
+#define FLOAT_SHIFT_SPEEDUP
+
+#define sign_a  psw.1
+#define sign_b  psw.5
+#define exp_a dpl
+#define exp_b dph
+#endif	/* using mcs51 assembly */
+
+
+#endif	/* __SDC51_FLOAT_H */
+